CA2408305C - Abdominal wound dressing - Google Patents
Abdominal wound dressing Download PDFInfo
- Publication number
- CA2408305C CA2408305C CA002408305A CA2408305A CA2408305C CA 2408305 C CA2408305 C CA 2408305C CA 002408305 A CA002408305 A CA 002408305A CA 2408305 A CA2408305 A CA 2408305A CA 2408305 C CA2408305 C CA 2408305C
- Authority
- CA
- Canada
- Prior art keywords
- wound
- film
- sheet
- porous pad
- holes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000003187 abdominal effect Effects 0.000 title abstract description 14
- 206010052428 Wound Diseases 0.000 claims abstract description 150
- 208000027418 Wounds and injury Diseases 0.000 claims abstract description 138
- 239000006260 foam Substances 0.000 claims abstract description 135
- 239000012530 fluid Substances 0.000 claims abstract description 45
- 239000000853 adhesive Substances 0.000 claims abstract description 14
- 230000001070 adhesive effect Effects 0.000 claims abstract description 14
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 11
- 229920000642 polymer Polymers 0.000 claims description 20
- 238000004891 communication Methods 0.000 claims description 8
- 229920002457 flexible plastic Polymers 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 230000000977 initiatory effect Effects 0.000 claims description 4
- 230000004936 stimulating effect Effects 0.000 claims description 4
- 210000000416 exudates and transudate Anatomy 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 14
- 230000035876 healing Effects 0.000 abstract description 9
- 239000013536 elastomeric material Substances 0.000 abstract description 7
- 239000006261 foam material Substances 0.000 abstract 1
- 230000007774 longterm Effects 0.000 abstract 1
- 230000001737 promoting effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 75
- 239000000463 material Substances 0.000 description 13
- 210000004027 cell Anatomy 0.000 description 10
- 239000011148 porous material Substances 0.000 description 7
- 210000001519 tissue Anatomy 0.000 description 7
- 229920005830 Polyurethane Foam Polymers 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 239000011496 polyurethane foam Substances 0.000 description 6
- 229920002635 polyurethane Polymers 0.000 description 5
- 239000004814 polyurethane Substances 0.000 description 5
- 238000001356 surgical procedure Methods 0.000 description 5
- 210000000683 abdominal cavity Anatomy 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 230000002980 postoperative effect Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000001225 therapeutic effect Effects 0.000 description 3
- 239000004604 Blowing Agent Substances 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 206010067268 Post procedural infection Diseases 0.000 description 2
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 2
- 238000012084 abdominal surgery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 229920002857 polybutadiene Polymers 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 229920006264 polyurethane film Polymers 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 206010016717 Fistula Diseases 0.000 description 1
- 208000002847 Surgical Wound Diseases 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 210000003815 abdominal wall Anatomy 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000003522 acrylic cement Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 210000003195 fascia Anatomy 0.000 description 1
- 230000003890 fistula Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 210000004379 membrane Anatomy 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 210000004303 peritoneum Anatomy 0.000 description 1
- 206010034674 peritonitis Diseases 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M27/00—Drainage appliance for wounds or the like, i.e. wound drains, implanted drains
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
- A61L15/24—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
- A61L15/26—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/425—Porous materials, e.g. foams or sponges
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
- A61M1/91—Suction aspects of the dressing
- A61M1/915—Constructional details of the pressure distribution manifold
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
- A61M1/91—Suction aspects of the dressing
- A61M1/916—Suction aspects of the dressing specially adapted for deep wounds
-
- A61F13/01042—
-
- A61F13/05—
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F2013/00089—Wound bandages
- A61F2013/0028—Wound bandages applying of mechanical pressure; passive massage
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2210/00—Anatomical parts of the body
- A61M2210/10—Trunk
- A61M2210/1021—Abdominal cavity
Abstract
A system and method for the temporary closure of a wound, especially an abdominal wound, to facilitate re-entry, final closure, and long term healing of the wound. An abdominal wound dressing and methods of use are described that enable the application of negative pressure to the wound site in a site healing promoting manner while also limiting the formation of adhesions that would prevent the removal of the dressing. The dressing comprises a layer of porous foam material (36) enclosed by sheets of elastomeric material (38) punctuated by a number of appropriately placed holes (34). Multiple layers of porous foam may also be used. A suction tube connector (16) is provided on an upper surface of a layer of foam (12) for connection to a negative pressure source. At least one layer of foam is enclosed in elastomeric material and is placed in direct contact with the tissue within the open wound. Fluids are drawn by negative pressure through the holes positioned in the elastomeric envelope, and through the foam. If multiple foam layers are employed, the lower layer(s) of foam are of a finer porosity while the upper layer of foam is coarse. An adhesive elastomeric sheet (14) covers the entire wound dressing and seals the edges to the skin surrounding the wound. An appropriate vacuum device is attached to the suction tube connector.
Description
SEE CE-RTIFICATE
Abdominal Wound Dressine This invention relates generally to methods and devices used for healing wounds caused by injury or surgery. More specifically, this invention relates to methods and devices for facilitating the healing of open wounds such as abdominal wounds that benefit from temporary closure and later reopening before final closure.
Significant advances have been made in preventing post-operative infections.
Still, post-operative treatment of patients receiving many types of invasive surgeries, especially those involving the abdominal cavity, is enhanced by the ability to re-enter the cavity in order to address peritonitis and other infections that often inhibit the final healing of the wound and the intemal organs. While the optimum outcome is no post-operative infections or other complications whatsoever, such complications occur frequently. Their occurrence has lead to the now common practice of establishing a temporary wound closure and, later, re-entering the wound for the purposes of cleansing the abdominal cavity, and for treating such complications, which must be treated before final, or definitive, closure.
The background description in U.S. Patent No.5,437,683 issued to Neumann et al, entitled Surgical Closure, reviews various complications associated with abdominal surgery and the process of post-operative cleansing of the abdominal cavity. Neumann et al teaches a somewhat complex solution to establishing a re-enterable wound closure, namely, a flexible fabric or plate-like securing device that covers the wound, provides a suction tube, and extends outward into a larger, sealable tube that may be re-entered as needed before final closure.
Many other techniques for post-operative temporary wall closure after abdominal surgery have been described. Studying these techniques enables the establishment for objective criteria by which to judge the suitability of various proposed temporary closure modalities.
A suitable temporary clositre should be simple, easy to apply, effective in containing the abdominal contents, minimally interfere with the abdominal organs and
Abdominal Wound Dressine This invention relates generally to methods and devices used for healing wounds caused by injury or surgery. More specifically, this invention relates to methods and devices for facilitating the healing of open wounds such as abdominal wounds that benefit from temporary closure and later reopening before final closure.
Significant advances have been made in preventing post-operative infections.
Still, post-operative treatment of patients receiving many types of invasive surgeries, especially those involving the abdominal cavity, is enhanced by the ability to re-enter the cavity in order to address peritonitis and other infections that often inhibit the final healing of the wound and the intemal organs. While the optimum outcome is no post-operative infections or other complications whatsoever, such complications occur frequently. Their occurrence has lead to the now common practice of establishing a temporary wound closure and, later, re-entering the wound for the purposes of cleansing the abdominal cavity, and for treating such complications, which must be treated before final, or definitive, closure.
The background description in U.S. Patent No.5,437,683 issued to Neumann et al, entitled Surgical Closure, reviews various complications associated with abdominal surgery and the process of post-operative cleansing of the abdominal cavity. Neumann et al teaches a somewhat complex solution to establishing a re-enterable wound closure, namely, a flexible fabric or plate-like securing device that covers the wound, provides a suction tube, and extends outward into a larger, sealable tube that may be re-entered as needed before final closure.
Many other techniques for post-operative temporary wall closure after abdominal surgery have been described. Studying these techniques enables the establishment for objective criteria by which to judge the suitability of various proposed temporary closure modalities.
A suitable temporary clositre should be simple, easy to apply, effective in containing the abdominal contents, minimally interfere with the abdominal organs and
2 SECTION 8 CORRECTION
SEE CERTIFICATE
CORRECTtON. ARTICLE 8 VOIR CERTIFICAT
surrounding tissue, minimally, if at all, promote the formation of adhesions and fistula, and promote process towards definitive closure.
A problem common to many existing methods of temporary wound closure is adhesion formation between the tissue and the material in contact with the wound.
Such adhesions are undesirable, and complicate the process of preparing the wound site for final closure. Placing porous materials such as gauze, surgical towels and even open cell foam, in direct contact with the open wound site, further complicates final closure by providing increased surface area that promotes adhesion formation, thereby making removing this material even more difficult.
Maintaining negative pressure on a wound site without creating conditions that make the removal of the temporary wound covering material more difficult, is manifestly beneficial. A desirable layered wound covering permits both the application of negative pressure, and the resultant removal of exuded fluids. Such a covering is re-enterable for the purpose of cleansing the wound without trauma to the wound site.
Such a wound covering would be most advantageous for open abdomen surgical wounds. These devices and techniques could also be used on other types of open wounds that present a difficult healing process.
The need for a wound covering, and therapeutic treatment system that allows the application of therapeutic negative pressure without causing increased adverse side effects to the open wound site is apparent. Presently, no such wound covering, or treatment system is known to exist. It is towards the filling of this need that the present invention is directed.
An object of the present invention is to provide a layered wound dressing that serves as a temporary covering for an open wound and permits the application of negative pressure for the removal of exuded fluids from the wound.
A further object of the present invention is to provide a wound dressing that permits the application of negative pressure for the removal of fluids from the wound site in a manner that facilitates the healing of the wound, and minimizes adhesion formation between the wound dressing and the underlying tissue.
SEE CERTIFICATE
CORRECTtON. ARTICLE 8 VOIR CERTIFICAT
surrounding tissue, minimally, if at all, promote the formation of adhesions and fistula, and promote process towards definitive closure.
A problem common to many existing methods of temporary wound closure is adhesion formation between the tissue and the material in contact with the wound.
Such adhesions are undesirable, and complicate the process of preparing the wound site for final closure. Placing porous materials such as gauze, surgical towels and even open cell foam, in direct contact with the open wound site, further complicates final closure by providing increased surface area that promotes adhesion formation, thereby making removing this material even more difficult.
Maintaining negative pressure on a wound site without creating conditions that make the removal of the temporary wound covering material more difficult, is manifestly beneficial. A desirable layered wound covering permits both the application of negative pressure, and the resultant removal of exuded fluids. Such a covering is re-enterable for the purpose of cleansing the wound without trauma to the wound site.
Such a wound covering would be most advantageous for open abdomen surgical wounds. These devices and techniques could also be used on other types of open wounds that present a difficult healing process.
The need for a wound covering, and therapeutic treatment system that allows the application of therapeutic negative pressure without causing increased adverse side effects to the open wound site is apparent. Presently, no such wound covering, or treatment system is known to exist. It is towards the filling of this need that the present invention is directed.
An object of the present invention is to provide a layered wound dressing that serves as a temporary covering for an open wound and permits the application of negative pressure for the removal of exuded fluids from the wound.
A further object of the present invention is to provide a wound dressing that permits the application of negative pressure for the removal of fluids from the wound site in a manner that facilitates the healing of the wound, and minimizes adhesion formation between the wound dressing and the underlying tissue.
-3-Another object of the present invention is to provide a wound dressing that pennits the application of negative pressure for the removal of fluids from the wound site in a manner that does not promote the formation of adhesions between the wound dressing and the underlying tissue and yet provides a porous medium through which the exuded fluids may pass without experiencing excessive blockage that would degrade the effectiveness of the negative pressure.
A still further object of the present invention is to provide an abdominal wound dressing that serves as a temporary covering for an open abdominal wound and permits the application of negative pressure for the removal of exuded fluids from the wound while being easily retracted from the wound site for the purpose of permitting repeated access to the abdominal cavity for cleansing and/or treatment.
In fulfilment of these and other objectives the present invention provides an abdominal wound dressing and methods for its use that permit the application of negative pressure to the wound site in a manner that promotes the healing of the site while limiting the formation of adhesions that would prevent the removal of the dressing.
According to one aspect of the present invention there is provided a removable wound closure which comprises a porous pad which is permeable to liquids for placement on or in a wound, the porous pad comprising a polymer foam having interconnecting cells and a sheet of flexible plastics film having a plurality of holes in its surface, the plastics film being in contact with a surface of the porous pad so that in use, the plastics film is disposed between the surface of the wound and the pad, a film drape which is impermeable to liquids for placement over the porous pad, the film drape having an adhesive perimeter for sealing to an area of skin surrounding the wound and connection means extending through the film drape and in flow communication with the porous pad for connection to a source of negative pressure for stimulating a flow of exuded liquids from the wound.
According to another aspect of the invention, there is provided a removable wound closure comprising a porous pad, a film drape, and a connection means. The porous pad is permeable to fluids for placement on or in a wound, and has a polymer foam layer and a first - 3a -sheet of flexible film. The polymer foam layer has interconnecting cells. The first sheet of flexible film has a plurality of holes distributed over its surface; it is in contact with a surface of the foam layer so that in use, it is disposed between, and in contact with both of, the surface of the wound and the foam layer; it comprises an elastomeric film or a flexible plastics film, whereby it is resistant to the formation of adhesions with the wound and is thereby easily removable from the wound. The film drape is impermeable to liquids and is for placement over the porous pad; it has an adhesive perimeter for sealing to an area of skin surrounding the wound.
The connection means extends through the film drape and is in flow communication with the porous pad for connection to a source of negative pressure for stimulating a flow of exuded fluids from the wound.
In a further aspect of the invention, the preceding exemplary embodiment is provided with a second sheet of flexible film disposed between the film drape and the porous pad. The second sheet of flexible film is sealed to the first sheet of flexible film around their respective perimeters to form an envelope. The second sheet of flexible film is formed with holes so that when the connection means is connected to a source of negative pressure, wound exudate is drawn through the porous pad and out of the porous pad through the holes in the second sheet of flexible film.
According to yet another aspect of the invention, there is provided a removable wound dressing, especially as would be applied to a large open wound that requires the drainage of fluid therefrom. The dressing comprises a first porous pad, a film drape, and a tube connector. The first porous pad is permeable to fluids and is for placement in contact with the wound; it has a foam pad and an elastomeric envelope. The foam pad comprises a polymer based foam having interconnecting cells and has a plurality of dispersed transverse holes. The elastomeric envelope comprises first and second sheets of elastomeric film sealed at their periphery and enclosing the foam pad. Each of the first and second sheets of elastomeric film have a plurality of dispersed holes therein. The film drape is impermeable to fluids and is for placement over the first porous pad; it has an adhesive perimeter for adhering the film drape to an area of skin surrounding the , = =
-3b-wound when the first porous pad is placed in contact with the wound. The tube connector is positioned through the film drape and in flow communication with the first porous pad; it is for connection to a source of negative pressure for initiating a flow of exuded fluids from the wound.
According to even yet another aspect of the invention, there is provided a removable wound dressing, especially as would be applied to a large open wound that requires the drainage of fluid therefrom. The dressing comprises a first porous pad, a second porous pad, a film drape, and a tubular connector. The first porous pad is permeable to fluids and is for placement in contact with the wound; it comprises a foam pad and an elastomeric envelope.
The foam pad comprises a polymer based foam having interconnecting cells and has a plurality of dispersed transverse holes. The elastomeric envelope comprises first and second sheets of elastomeric film, sealed at their periphery, and enclosing the foam pad. The first sheet of elastomeric film has a plurality of dispersed holes therein which are offset from alignment with the dispersed holes in the foam pad. The second sheet of elastomeric film also has a plurality of dispersed holes therein which are aligned with the dispersed holes in the foam pad. The second porous pad is also permeable to fluids and is for placement over, and in contact with, the first porous pad; it also comprises a polymer foam having interconnecting cells. The film drape is impermeable to fluids and is for placement over the second porous pad and the first porous pad placed over the wound.
The film drape has an adhesive perimeter for adhering it to an area of skin surrounding the wound. The tubular connector is positioned through the film drape and in flow communication with the second porous pad, for connection to a source of negative pressure for initiating a flow of exuded fluids from the wound.
The holes in the flexible plastics film should constitute a sufficiently small proportion of 26 the area of the film in contact with the wound so that there is limited
A still further object of the present invention is to provide an abdominal wound dressing that serves as a temporary covering for an open abdominal wound and permits the application of negative pressure for the removal of exuded fluids from the wound while being easily retracted from the wound site for the purpose of permitting repeated access to the abdominal cavity for cleansing and/or treatment.
In fulfilment of these and other objectives the present invention provides an abdominal wound dressing and methods for its use that permit the application of negative pressure to the wound site in a manner that promotes the healing of the site while limiting the formation of adhesions that would prevent the removal of the dressing.
According to one aspect of the present invention there is provided a removable wound closure which comprises a porous pad which is permeable to liquids for placement on or in a wound, the porous pad comprising a polymer foam having interconnecting cells and a sheet of flexible plastics film having a plurality of holes in its surface, the plastics film being in contact with a surface of the porous pad so that in use, the plastics film is disposed between the surface of the wound and the pad, a film drape which is impermeable to liquids for placement over the porous pad, the film drape having an adhesive perimeter for sealing to an area of skin surrounding the wound and connection means extending through the film drape and in flow communication with the porous pad for connection to a source of negative pressure for stimulating a flow of exuded liquids from the wound.
According to another aspect of the invention, there is provided a removable wound closure comprising a porous pad, a film drape, and a connection means. The porous pad is permeable to fluids for placement on or in a wound, and has a polymer foam layer and a first - 3a -sheet of flexible film. The polymer foam layer has interconnecting cells. The first sheet of flexible film has a plurality of holes distributed over its surface; it is in contact with a surface of the foam layer so that in use, it is disposed between, and in contact with both of, the surface of the wound and the foam layer; it comprises an elastomeric film or a flexible plastics film, whereby it is resistant to the formation of adhesions with the wound and is thereby easily removable from the wound. The film drape is impermeable to liquids and is for placement over the porous pad; it has an adhesive perimeter for sealing to an area of skin surrounding the wound.
The connection means extends through the film drape and is in flow communication with the porous pad for connection to a source of negative pressure for stimulating a flow of exuded fluids from the wound.
In a further aspect of the invention, the preceding exemplary embodiment is provided with a second sheet of flexible film disposed between the film drape and the porous pad. The second sheet of flexible film is sealed to the first sheet of flexible film around their respective perimeters to form an envelope. The second sheet of flexible film is formed with holes so that when the connection means is connected to a source of negative pressure, wound exudate is drawn through the porous pad and out of the porous pad through the holes in the second sheet of flexible film.
According to yet another aspect of the invention, there is provided a removable wound dressing, especially as would be applied to a large open wound that requires the drainage of fluid therefrom. The dressing comprises a first porous pad, a film drape, and a tube connector. The first porous pad is permeable to fluids and is for placement in contact with the wound; it has a foam pad and an elastomeric envelope. The foam pad comprises a polymer based foam having interconnecting cells and has a plurality of dispersed transverse holes. The elastomeric envelope comprises first and second sheets of elastomeric film sealed at their periphery and enclosing the foam pad. Each of the first and second sheets of elastomeric film have a plurality of dispersed holes therein. The film drape is impermeable to fluids and is for placement over the first porous pad; it has an adhesive perimeter for adhering the film drape to an area of skin surrounding the , = =
-3b-wound when the first porous pad is placed in contact with the wound. The tube connector is positioned through the film drape and in flow communication with the first porous pad; it is for connection to a source of negative pressure for initiating a flow of exuded fluids from the wound.
According to even yet another aspect of the invention, there is provided a removable wound dressing, especially as would be applied to a large open wound that requires the drainage of fluid therefrom. The dressing comprises a first porous pad, a second porous pad, a film drape, and a tubular connector. The first porous pad is permeable to fluids and is for placement in contact with the wound; it comprises a foam pad and an elastomeric envelope.
The foam pad comprises a polymer based foam having interconnecting cells and has a plurality of dispersed transverse holes. The elastomeric envelope comprises first and second sheets of elastomeric film, sealed at their periphery, and enclosing the foam pad. The first sheet of elastomeric film has a plurality of dispersed holes therein which are offset from alignment with the dispersed holes in the foam pad. The second sheet of elastomeric film also has a plurality of dispersed holes therein which are aligned with the dispersed holes in the foam pad. The second porous pad is also permeable to fluids and is for placement over, and in contact with, the first porous pad; it also comprises a polymer foam having interconnecting cells. The film drape is impermeable to fluids and is for placement over the second porous pad and the first porous pad placed over the wound.
The film drape has an adhesive perimeter for adhering it to an area of skin surrounding the wound. The tubular connector is positioned through the film drape and in flow communication with the second porous pad, for connection to a source of negative pressure for initiating a flow of exuded fluids from the wound.
The holes in the flexible plastics film should constitute a sufficiently small proportion of 26 the area of the film in contact with the wound so that there is limited
4 ingrowth of fibrous tissue into the sheet. In this way, the film does not become adhered to the wound but remains relatively easy to remove. Preferably, the holes in the film should constitute less than 10%, especially less than 5% or even 1 to 2% or less of the effective area of the film. Openings in the form of slits or slots are preferred because these constitute a very small proportion of the area of the film.
The slits or slots may typically be 0.5 to 2 cms, e.g. 1 to 1.5 cm in length and may be aligned in rows and separated by 10 to 40 mil spaces, e.g., 20 to 30 mil spaces.
The flexible film should be sufficiently stiff to hold its shape. A suitable material is plasticised pvc of 30 to 80 microns in thickness, e.g., 40 to 60 microns.
In use, the film is trimnied to size such that it overlaps the wound edge. An absorbent polymer foam, e.g. a reticulated polyurethane foam, is trimmed to size so that it fits within the boundary of the wound. The trimmed foam pad is placed on the cut film so that the edges of the film extend beyond the perimeter of the foam, e.g. by about 20 to 80 mm, preferably 40 to 60 mm, typically about 50 mm. A surgical drape of elastomeric film-like material is placed over the foam pad and the flexible plastics film so as to encapsulate and provide an air-tight seal over the wound dressing. A suction tube or connector is arranged to extend through the surgical drape into the polymer foam or into close proximity with it. The suction tube or connector is sealed to the surgical drape so that the space beneath the drape can be maintained at a pressure below atmospheric by connecting the suction tube or connector to a source of negative pressure. A preferred suction tube connector head is described in GB Patent No. 2329127 and in US Patent No.
6216701.
Surgical drapes conventionally comprise a thin elastomeric film which is coated overall on one side with a tacky, pressure-sensitive adhesive. Usually a protective sheet which is treated with a release agent contacts the adhesive surface and is stripped away just before use to reveal the adhesive surface. For the purposes of this invention, the assembly of the adhesive elastomeric film and protective film are cut to size (and if appropriate, a hole cut for the suction tube or connector) prior to stripping away the protective sheet.
Suitable elastomeric fihns include polyurethane and polybutadiene.
Commerically available surgical drapes include those marketed by the 3M
Company under the trade mark "Tegaderm".
The foam may comprise multiple layers. A suction tube spigot or connector is provided on the upper surface of foam for connection to a negative pressure source.
Instead of employing a flexible plastics sheet in contact with the wound and a separate portion of polymer foam, the foam may be enclosed in an envelope of plastics fllm. In this embodiment, the plastics film may be elastomeric in nature and the filin need not extend beyond the perimeter of the foam. However, it is convenient to provide a flange of film extending beyond the perimeter of the foam, e.g. by about 20 to 80 mm, more usually about 40 to 60 mm, typically about 50 mm. Suitable elastomeric film materials include polyurethane, PTFE, or polybutadiene films, similar to those used for surgical drapes. Preferably, the elastomeric film has a thickness of about 30 to 70 microns, especially 40 to 60 microns, typically about 50 microns. A number of differently sized polymer foam slabs will be cut, shaped and enclosed in an envelope of elastomeric film material. It may be convenient to weld the film to form the envelope using ultrasonic or heat welding. Commonly, abdominal wounds are approximately elliptical in shape and the foam pad is also preferably elliptical in shape.
Typical sizes for the foam pads may be about 280, 320 and 380 mm for the major dimension and about 140, 175 and 250 mm for the minor dimension. A polyurethane foam having a thickness of about 5 to 10 mm, e.g. about 6 mm, is suitable. Polyurethane foams having a pore size of about 30 to 50, e.g. 40 pores per inch are preferred.
Polyether foams or polyvinyl alcohol foams may alternatively be used. If multiple layers of foam are employed, different foams may be used in different layers. For example, the layer in contact with the lower film may be of polyvinyl alcohol foam and the upper foam layer(s) may be of polyurethane.
SEE CERTIFICATE
VOIR CERTIFICAT
In the multi-layer embodiment, at least one lower layer of foam may be enclosed in elastomeric material and placed in direct contact with the tissue within the open wound. In another embodiment, only a single layer of foam is used, and the envelope of elastomeric material containing the layer of foam is placed in direct contact with the open wound.
Fluids are drawn by negative pressure through the holes in the flexible or elastomeric material, and then through the foam. In the multi-layer embodiment, fluids are drawn by negative pressure through the holes located in the elastomeric envelope, through the lower layer(s) of foam, again through holes in the elastomeric envelope, and then through the upper layer of foam that is placed over the enveloped lower layer(s).
In the multi-layer embodiment, the lower layer(s) of foam may be of a finer porosity while the upper layer of foam may be coarser. In all embodiments of the present invention, an adhesive elastomeric sheet, e.g. a surgical drape, covers the entire wound dressing and seals the edges to the skin surrounding the wound.
An appropriate vacuum device is attached to the suction tube spigot or connector to provide therapeutic negative pressure.
Figure 1 is a cross sectional view of the device of a first embod'unent of the present invention showing the use of a combination single foam layer within an envelope and an overlay of a second foam layer.
Figure 2 is a cross sectional view of a second embodiment of the present invention similar to Figure I but showing the use of a double foam layer within an envelope.
Figure 3 is a third embodiment comprising a flexible sheet and a layer of foam thereon.
The present invention lends itself to use in conjunction with surgical techniques that require repeated access to the abdonvnal cavity after surgery therein.
The present invention is directed toward providing a removable and beneficial dressing that facilitates both healing of the wound and its final closure.
Reference is made to U.S. Patent Application Serial No. 08/951,832 and also to USSN 09/078,223 and GB Patent No. 2307180 (WO 94/20041 and WO 97/18007), for a description of a negative pressure system suitable for implementing the vacuum required for use of the dressing structures, and treatment method, described herein.
Negative pressure is defined herein as a vacuum of less than 1 atmosphere of pressure.
Controlling the negative pressure and collecting and disposing of exuded fluids are also described in the above cited references. The manner of using such systems in conjunction with the dressing structure described herein will become apparent to those of ordinary skill in the art.
Reference is made to Figure 1 for a description of a first embodiment of the present invention wherein a single lower layer of foam is utilized in the wound contact layer of the dressing. Both Figure 1 and Figure 2 are partially exploded views of the dressing of the present invention. During use, the layers of foam and the intervening sheets of elastomeric material would be in close and sometimes sealed contact with each other.
The complete wound dressing 10 shown in Figure 1 comprises upper foam layer 12 and lower foam layer 36. Lower foam layer 36 is enveloped within two sheets of elastomeric material 38 such as are used for the membranes of surgical drapes.
The elastomeric sheets 38 maypreferablybe constructed from polyurethane film, whichprovides both the necessary strength and resiliency needed for placement in direct contact with the wound. Another suitable material is polytetrafluoroethylene (PTFE).
Elastomeric sheets 38 are sealed on their periphery, e.g. by welding or adhesive, in a manner that surrounds the lower layer of foam 36. Elastomeric sheets 38 resist the formation of wound adhesions and are therefore appropriate for placement in direct contact with the tissue surfaces within the wound and around the wound periphery.
Placing such non-porous film material in contact with the wound opening, rather than open cell foam or a mesh material greatly reduces the occurrence of adhesions that, over time would make removal of the dressing difficult or dangerous. The pliable and flexible lower layer envelope is easily inserted over and/or into the wound.
The lower layer envelope may, as desired, be placed either over the wound wherein the edges of the layer are in contact with the skin surrounding the wound or preferably into the wound leaving the upper surface of the upper surface of the lower layer envelope exposed above the wound.
The overall dressing 10 has a generally flat profile as shown in cross section in Figure 2 and Figure 3. The shape of the dressing can vary significantly depending on the size and shape of the wound to which it is to be applied. A rectangular or square shape having dimensions on the order of 8 inches by 8 inches up to as much as inches by 18 inches might be appropriate for use in conjunction with the abdominal wounds described above. Other dimensions and shapes, such as circular, oval or even oblong may be suitable for other types of wounds. Typical dimensions for thicknesses and for planar dimensions of oval or elliptical foam slabs are given above.
This basic structure may be easily iinplemented with any of these, or even other, shapes and sizes.
Elastomeric sheets 38 are provided with a plurality of holes 32 and 34 in the upper and lower walls 28 and 30 of the envelope they define. These holes may be of the order of 3 mrn (1/8 inch) to 6 mm (1/4 inch) in length, diameter or maximum dimension and may be dispersed across the surface of the defined envelope on 25 to 75 mm (1 inch to 3 inch) centres. Preferably, the holes are slit- or slot-shaped.
The positions of the holes may be associated with holes positioned into and through lower foam layer 36 as described in more detail below. Where holes are provided in the foam, they may be of different sizes and shapes.
Lower foam layer 36 is preferably constructed from polyurethane having a high degree of reticulation and good permeability under suction. Foams having at least 90% and preferably 95% of interconnecting cells are preferred. Preferably, the foams have from 20 to 60 pores per inch. Preferably, the polyurethane foams are prepared by reacting a hydrophilic polyether polyol with a tolylene diisocyanate in the presence of water. Carbon dioxide is liberated in the reaction which provides a gaseous blowing agent. Pore size can be controlled by temperature and stirring. Reticulation is enhanced by maintaining the foam in the chamber in which the foam is initially formed and causing the blowing agent to expand further and rupturing cell walls.
As indicated above, lower foam layer 36 is punctuated by a plurality of holes that pass entirely through the layer from its upper to lower surface. As will be seen from their placement with respect to holes 32 and 34 in the elastomeric envelope, the holes in the lower foam layer 36 are provided to form "sinks" into which the exuded fluids from the wound may be drawn. Holes 34 in the lower surface of the elastomeric envelope 38 may be positioned directly over the holes in the foam layer 36.
Holes 32 in the upper wall 28 of the elastomeric envelope 38 are preferably positioned so that they are not aligned with the holes in the foam layer 36 and the holes in the lower surface 30 of the envelope 38. In this manner, fluids are withdrawn (by appropriate negative pressure) from the wound into the holes 34 positioned in the lower surface 30 of the envelope 38 and into the "sink" holes in the lower foam layer 36. The fluids are then drawn into the cells of the lower foam layer 36 where they are dispersed before again being drawn through holes in the elastomeric envelope 38, this time in the upper wall 28 of the envelope 38. Placement of the lower foam layer/envelope onto or into the wound therefore requires proper orientation of the holes as shown.
A problem encountered in the prior art has been the deterioration of flow caused by the clogging of the medium through which the exuded fluids, and the accompanying debris, must flow. Such flows are drawn towards the source of the negative pressure thus becoming clogged most quickly along the direct path towards the vacuum source, in this case the suction tube. The present invention disperses the vacuum so as to de-localize the flow. The layers of foam and the spaced holes in the elastomeric sheets provide this dispersion. Even without an interleaved layer of foam, the offset holes accomplish this purpose. The dark arrows in both Figure 1 and Figure 2 show the flow of exuded fluid through the dressing.
Upper foam layer 12 provides the initial mechanism for dispersing the vacuum that draws the fluids up from the wound. In the presently preferred embodiment as shown in Figure 1, upper foam layer 12 is a coarser polyester-based or polyurethane foam having greater rigidity than the lower layer of polyurethane foam. For example, the lower layer of foam 36 may have about 1.5 to 2 times the pores per inch of the coarser foam layer. Typically, the coarse layer of foam may have 20 to 30 pores per inch. Upper foam layer 12 should be somewhat less pliable so as to hold its shape under the influence of even relatively strong negative pressure. Upper foam layer 12 is placed in direct contact with the upper wall 28 of the elastomeric envelope 38 containing lower foam layer 36. Covering upper foam layer 12 and the balance of the dressing is elastomeric drape 14, which in the preferred embodiment is made of the same type of polyurethane film, as is elastomeric envelope 38.
Drape 14 is a single sheet, cut large enough to fully cover upper foam layer and an additional area of skin surrounding the wound site. A pressure sensitive adhesive, such as a permanently tacky acrylic adhesive, is coated on at least the periphery of drape 14 for creating an airtight seal against the skin, effectively closing the dressing and the wound beneath it.
Connector 16 is positioned over a hole cut in drape 14 and is fixed thereto by sealing patch 22. Sealing patch 22, which is circular in the preferred embodiment, adheres to a bottom flange portion 20 of connector 16 as well as drape 14. In this manner, a negative pressure is drawn in upper foam layer 12 when an appropriate such line is attached to tube connector 18 positioned on connector 16. Flange portion 20 may have a lower surface shaped with channels to direct flow of fluid from the porous pad to the tubular portion 18 of the connector 16. A suitable suction head connector is shown in GB 2329127 and in US 6216701 (WO 99/13793).
Another embodiment of the present invention is depicted in Figure 3. In this embodiment, the principles of operation are identical, but the dressing is comprised of but a single foam layer, the foam layer within the non-porous film is dispensed with.
SEE CERTIFICATE
CORRECTION-The foam utilized is black coloured open cell polyurethane currently commercialised in assignee's V.A.C. product.
Referring to Figure 3, a flexible sheet 38 of semi-stiff plastics material, e.g.
formed from plasticised pvc is placed in contact with the wound so that the trimmed edges line the walls of the wound. The sheet is formed with holes 34 which are preferably slits or narrow slots. A reticulated plastics foam is placed on top of the sheet 38. A suction head connector 16 is placed with its flange portion 20 in contact with the top surface of the foam pad and a surgical drape 14 is placed over the foam and the sheet 3 8 to seal the dressing in the wound.
Instead of providing a separate sealing patch 22 to seal the connector to the dressing, the patch may be part of the surgical drape, as descnbed and illustrated in GB 2,329,127 and US 6216701.
The dressing structure of the present invention could be applied in a number of circumstances in association with a variety of different wound types. In the case of an open abdominal wound as might result from surgery, the lower foam layer contained within the elastomeric envelope would be positioned within the wound with the periphery possibly extending under the fascia and peritoneum of the abdominal wall.
The upper foam layer could then be cut to a size appropriate for positioning on the exposed upper surface of the lower layer envelope. The drape with the appropriately positioned spigot may then be placed over the upper foam layer and the wound as a whole, extending two or more inches over the skin surrounding the wound, and adhesively holding the dressing in place. Application of a suction line as described above draws the entire dressing onto the wound and serves to initiate the flow of effluent through the dressing.
The thickness of the upper and lower foam layers is determined in part by the desire to have a flat profile to the dressing when it is in place. The more rigid upper layer of foam may, in the preferred embodiment, have a thickness on the order of 25 to 75 mm (1 inch to 3 inches) uncompressed. Its rigidity should limit compression to 80% - 90% under the negative pressures normally associated with wound suction and the like. The more pliable lower foam layer, where employed, should have a thickness on the order of 5 to 15 mm, e.g. 5 to 10 mm (about 1/4 to 3/4 inch) so as to be capable of being easily inserted into the wound.
The structure of the present invention may likewise be utilized on the surface of the skin when the open wound is not associated with an internal cavity or the like.
In such a case the periphery of the elastomeric lower envelope may contact the skin surrounding the wound. This is appropriate as long as the periphery of the drape covering the upper foam layer extends suitably beyond the lower envelope to adhere to the skin and seal the dressing. It therefore becomes apparent that the lower elastomeric envelope may be pre-made in a variety of shapes and sizes while the upper foam layer and the drape may be cut, at the time the dressing is placed on the wound, to the appropriate size and configuration.
Figure 2 discloses an alternate preferred embodiment of the present invention wherein the single lower layer of foam shown in Figure 1 is replaced with a double layer of foam. In this embodiment, elastomeric envelope 38 encloses a first lower foam layer 40 and a second lower foam layer 42. The advantage realized by this arrangement lies in the offset positioning of the holes interspersed in both foam layers.
Holes 34 punctuating the lower wall 30 of elastomeric envelope 38 remain positioned in line with the "sink" holes positioned in the second (bottom) layer of foam 42.
Holes 32 punctuating the upper wall 28 of elastomeric envelope 38 are, as described above, offset from alignment with holes 34 in the lower surface of the envelope, but are aligned with the "sink" holes positioned in the first (top) layer of foam 40. Under this structure further dispersion of the flow of fluid occurs thus decreasing the localization of clogging debris and prolonging the effective life of the dressing. The remaining components, applications, and methods of use of the dressing are as described above in conjunction with Figure 1.
The present invention has been described in conjunction with certain preferred embodiments. Alternative embodiments and further applications of the invention will be anticipated by those skilled in the art without departure from the basic concepts and principles of the invention. Certain materials have been described as suitable for the specific layers of foam and film although a variety of similar materials would be equally suitable. Certain geometries and dimensions have been described as appropriate under various conditions and with various applications of the dressing, especially in conjunction with open and re-enterable abdominal wounds. These geometries and dimensions are not intended as limiting but are described as representative of the various shapes and sizes possible using the fundamental layered structure of the dressing. The scope of the invention is therefore not limited by the foregoing description but is best defined by the specific claims that follow.
The slits or slots may typically be 0.5 to 2 cms, e.g. 1 to 1.5 cm in length and may be aligned in rows and separated by 10 to 40 mil spaces, e.g., 20 to 30 mil spaces.
The flexible film should be sufficiently stiff to hold its shape. A suitable material is plasticised pvc of 30 to 80 microns in thickness, e.g., 40 to 60 microns.
In use, the film is trimnied to size such that it overlaps the wound edge. An absorbent polymer foam, e.g. a reticulated polyurethane foam, is trimmed to size so that it fits within the boundary of the wound. The trimmed foam pad is placed on the cut film so that the edges of the film extend beyond the perimeter of the foam, e.g. by about 20 to 80 mm, preferably 40 to 60 mm, typically about 50 mm. A surgical drape of elastomeric film-like material is placed over the foam pad and the flexible plastics film so as to encapsulate and provide an air-tight seal over the wound dressing. A suction tube or connector is arranged to extend through the surgical drape into the polymer foam or into close proximity with it. The suction tube or connector is sealed to the surgical drape so that the space beneath the drape can be maintained at a pressure below atmospheric by connecting the suction tube or connector to a source of negative pressure. A preferred suction tube connector head is described in GB Patent No. 2329127 and in US Patent No.
6216701.
Surgical drapes conventionally comprise a thin elastomeric film which is coated overall on one side with a tacky, pressure-sensitive adhesive. Usually a protective sheet which is treated with a release agent contacts the adhesive surface and is stripped away just before use to reveal the adhesive surface. For the purposes of this invention, the assembly of the adhesive elastomeric film and protective film are cut to size (and if appropriate, a hole cut for the suction tube or connector) prior to stripping away the protective sheet.
Suitable elastomeric fihns include polyurethane and polybutadiene.
Commerically available surgical drapes include those marketed by the 3M
Company under the trade mark "Tegaderm".
The foam may comprise multiple layers. A suction tube spigot or connector is provided on the upper surface of foam for connection to a negative pressure source.
Instead of employing a flexible plastics sheet in contact with the wound and a separate portion of polymer foam, the foam may be enclosed in an envelope of plastics fllm. In this embodiment, the plastics film may be elastomeric in nature and the filin need not extend beyond the perimeter of the foam. However, it is convenient to provide a flange of film extending beyond the perimeter of the foam, e.g. by about 20 to 80 mm, more usually about 40 to 60 mm, typically about 50 mm. Suitable elastomeric film materials include polyurethane, PTFE, or polybutadiene films, similar to those used for surgical drapes. Preferably, the elastomeric film has a thickness of about 30 to 70 microns, especially 40 to 60 microns, typically about 50 microns. A number of differently sized polymer foam slabs will be cut, shaped and enclosed in an envelope of elastomeric film material. It may be convenient to weld the film to form the envelope using ultrasonic or heat welding. Commonly, abdominal wounds are approximately elliptical in shape and the foam pad is also preferably elliptical in shape.
Typical sizes for the foam pads may be about 280, 320 and 380 mm for the major dimension and about 140, 175 and 250 mm for the minor dimension. A polyurethane foam having a thickness of about 5 to 10 mm, e.g. about 6 mm, is suitable. Polyurethane foams having a pore size of about 30 to 50, e.g. 40 pores per inch are preferred.
Polyether foams or polyvinyl alcohol foams may alternatively be used. If multiple layers of foam are employed, different foams may be used in different layers. For example, the layer in contact with the lower film may be of polyvinyl alcohol foam and the upper foam layer(s) may be of polyurethane.
SEE CERTIFICATE
VOIR CERTIFICAT
In the multi-layer embodiment, at least one lower layer of foam may be enclosed in elastomeric material and placed in direct contact with the tissue within the open wound. In another embodiment, only a single layer of foam is used, and the envelope of elastomeric material containing the layer of foam is placed in direct contact with the open wound.
Fluids are drawn by negative pressure through the holes in the flexible or elastomeric material, and then through the foam. In the multi-layer embodiment, fluids are drawn by negative pressure through the holes located in the elastomeric envelope, through the lower layer(s) of foam, again through holes in the elastomeric envelope, and then through the upper layer of foam that is placed over the enveloped lower layer(s).
In the multi-layer embodiment, the lower layer(s) of foam may be of a finer porosity while the upper layer of foam may be coarser. In all embodiments of the present invention, an adhesive elastomeric sheet, e.g. a surgical drape, covers the entire wound dressing and seals the edges to the skin surrounding the wound.
An appropriate vacuum device is attached to the suction tube spigot or connector to provide therapeutic negative pressure.
Figure 1 is a cross sectional view of the device of a first embod'unent of the present invention showing the use of a combination single foam layer within an envelope and an overlay of a second foam layer.
Figure 2 is a cross sectional view of a second embodiment of the present invention similar to Figure I but showing the use of a double foam layer within an envelope.
Figure 3 is a third embodiment comprising a flexible sheet and a layer of foam thereon.
The present invention lends itself to use in conjunction with surgical techniques that require repeated access to the abdonvnal cavity after surgery therein.
The present invention is directed toward providing a removable and beneficial dressing that facilitates both healing of the wound and its final closure.
Reference is made to U.S. Patent Application Serial No. 08/951,832 and also to USSN 09/078,223 and GB Patent No. 2307180 (WO 94/20041 and WO 97/18007), for a description of a negative pressure system suitable for implementing the vacuum required for use of the dressing structures, and treatment method, described herein.
Negative pressure is defined herein as a vacuum of less than 1 atmosphere of pressure.
Controlling the negative pressure and collecting and disposing of exuded fluids are also described in the above cited references. The manner of using such systems in conjunction with the dressing structure described herein will become apparent to those of ordinary skill in the art.
Reference is made to Figure 1 for a description of a first embodiment of the present invention wherein a single lower layer of foam is utilized in the wound contact layer of the dressing. Both Figure 1 and Figure 2 are partially exploded views of the dressing of the present invention. During use, the layers of foam and the intervening sheets of elastomeric material would be in close and sometimes sealed contact with each other.
The complete wound dressing 10 shown in Figure 1 comprises upper foam layer 12 and lower foam layer 36. Lower foam layer 36 is enveloped within two sheets of elastomeric material 38 such as are used for the membranes of surgical drapes.
The elastomeric sheets 38 maypreferablybe constructed from polyurethane film, whichprovides both the necessary strength and resiliency needed for placement in direct contact with the wound. Another suitable material is polytetrafluoroethylene (PTFE).
Elastomeric sheets 38 are sealed on their periphery, e.g. by welding or adhesive, in a manner that surrounds the lower layer of foam 36. Elastomeric sheets 38 resist the formation of wound adhesions and are therefore appropriate for placement in direct contact with the tissue surfaces within the wound and around the wound periphery.
Placing such non-porous film material in contact with the wound opening, rather than open cell foam or a mesh material greatly reduces the occurrence of adhesions that, over time would make removal of the dressing difficult or dangerous. The pliable and flexible lower layer envelope is easily inserted over and/or into the wound.
The lower layer envelope may, as desired, be placed either over the wound wherein the edges of the layer are in contact with the skin surrounding the wound or preferably into the wound leaving the upper surface of the upper surface of the lower layer envelope exposed above the wound.
The overall dressing 10 has a generally flat profile as shown in cross section in Figure 2 and Figure 3. The shape of the dressing can vary significantly depending on the size and shape of the wound to which it is to be applied. A rectangular or square shape having dimensions on the order of 8 inches by 8 inches up to as much as inches by 18 inches might be appropriate for use in conjunction with the abdominal wounds described above. Other dimensions and shapes, such as circular, oval or even oblong may be suitable for other types of wounds. Typical dimensions for thicknesses and for planar dimensions of oval or elliptical foam slabs are given above.
This basic structure may be easily iinplemented with any of these, or even other, shapes and sizes.
Elastomeric sheets 38 are provided with a plurality of holes 32 and 34 in the upper and lower walls 28 and 30 of the envelope they define. These holes may be of the order of 3 mrn (1/8 inch) to 6 mm (1/4 inch) in length, diameter or maximum dimension and may be dispersed across the surface of the defined envelope on 25 to 75 mm (1 inch to 3 inch) centres. Preferably, the holes are slit- or slot-shaped.
The positions of the holes may be associated with holes positioned into and through lower foam layer 36 as described in more detail below. Where holes are provided in the foam, they may be of different sizes and shapes.
Lower foam layer 36 is preferably constructed from polyurethane having a high degree of reticulation and good permeability under suction. Foams having at least 90% and preferably 95% of interconnecting cells are preferred. Preferably, the foams have from 20 to 60 pores per inch. Preferably, the polyurethane foams are prepared by reacting a hydrophilic polyether polyol with a tolylene diisocyanate in the presence of water. Carbon dioxide is liberated in the reaction which provides a gaseous blowing agent. Pore size can be controlled by temperature and stirring. Reticulation is enhanced by maintaining the foam in the chamber in which the foam is initially formed and causing the blowing agent to expand further and rupturing cell walls.
As indicated above, lower foam layer 36 is punctuated by a plurality of holes that pass entirely through the layer from its upper to lower surface. As will be seen from their placement with respect to holes 32 and 34 in the elastomeric envelope, the holes in the lower foam layer 36 are provided to form "sinks" into which the exuded fluids from the wound may be drawn. Holes 34 in the lower surface of the elastomeric envelope 38 may be positioned directly over the holes in the foam layer 36.
Holes 32 in the upper wall 28 of the elastomeric envelope 38 are preferably positioned so that they are not aligned with the holes in the foam layer 36 and the holes in the lower surface 30 of the envelope 38. In this manner, fluids are withdrawn (by appropriate negative pressure) from the wound into the holes 34 positioned in the lower surface 30 of the envelope 38 and into the "sink" holes in the lower foam layer 36. The fluids are then drawn into the cells of the lower foam layer 36 where they are dispersed before again being drawn through holes in the elastomeric envelope 38, this time in the upper wall 28 of the envelope 38. Placement of the lower foam layer/envelope onto or into the wound therefore requires proper orientation of the holes as shown.
A problem encountered in the prior art has been the deterioration of flow caused by the clogging of the medium through which the exuded fluids, and the accompanying debris, must flow. Such flows are drawn towards the source of the negative pressure thus becoming clogged most quickly along the direct path towards the vacuum source, in this case the suction tube. The present invention disperses the vacuum so as to de-localize the flow. The layers of foam and the spaced holes in the elastomeric sheets provide this dispersion. Even without an interleaved layer of foam, the offset holes accomplish this purpose. The dark arrows in both Figure 1 and Figure 2 show the flow of exuded fluid through the dressing.
Upper foam layer 12 provides the initial mechanism for dispersing the vacuum that draws the fluids up from the wound. In the presently preferred embodiment as shown in Figure 1, upper foam layer 12 is a coarser polyester-based or polyurethane foam having greater rigidity than the lower layer of polyurethane foam. For example, the lower layer of foam 36 may have about 1.5 to 2 times the pores per inch of the coarser foam layer. Typically, the coarse layer of foam may have 20 to 30 pores per inch. Upper foam layer 12 should be somewhat less pliable so as to hold its shape under the influence of even relatively strong negative pressure. Upper foam layer 12 is placed in direct contact with the upper wall 28 of the elastomeric envelope 38 containing lower foam layer 36. Covering upper foam layer 12 and the balance of the dressing is elastomeric drape 14, which in the preferred embodiment is made of the same type of polyurethane film, as is elastomeric envelope 38.
Drape 14 is a single sheet, cut large enough to fully cover upper foam layer and an additional area of skin surrounding the wound site. A pressure sensitive adhesive, such as a permanently tacky acrylic adhesive, is coated on at least the periphery of drape 14 for creating an airtight seal against the skin, effectively closing the dressing and the wound beneath it.
Connector 16 is positioned over a hole cut in drape 14 and is fixed thereto by sealing patch 22. Sealing patch 22, which is circular in the preferred embodiment, adheres to a bottom flange portion 20 of connector 16 as well as drape 14. In this manner, a negative pressure is drawn in upper foam layer 12 when an appropriate such line is attached to tube connector 18 positioned on connector 16. Flange portion 20 may have a lower surface shaped with channels to direct flow of fluid from the porous pad to the tubular portion 18 of the connector 16. A suitable suction head connector is shown in GB 2329127 and in US 6216701 (WO 99/13793).
Another embodiment of the present invention is depicted in Figure 3. In this embodiment, the principles of operation are identical, but the dressing is comprised of but a single foam layer, the foam layer within the non-porous film is dispensed with.
SEE CERTIFICATE
CORRECTION-The foam utilized is black coloured open cell polyurethane currently commercialised in assignee's V.A.C. product.
Referring to Figure 3, a flexible sheet 38 of semi-stiff plastics material, e.g.
formed from plasticised pvc is placed in contact with the wound so that the trimmed edges line the walls of the wound. The sheet is formed with holes 34 which are preferably slits or narrow slots. A reticulated plastics foam is placed on top of the sheet 38. A suction head connector 16 is placed with its flange portion 20 in contact with the top surface of the foam pad and a surgical drape 14 is placed over the foam and the sheet 3 8 to seal the dressing in the wound.
Instead of providing a separate sealing patch 22 to seal the connector to the dressing, the patch may be part of the surgical drape, as descnbed and illustrated in GB 2,329,127 and US 6216701.
The dressing structure of the present invention could be applied in a number of circumstances in association with a variety of different wound types. In the case of an open abdominal wound as might result from surgery, the lower foam layer contained within the elastomeric envelope would be positioned within the wound with the periphery possibly extending under the fascia and peritoneum of the abdominal wall.
The upper foam layer could then be cut to a size appropriate for positioning on the exposed upper surface of the lower layer envelope. The drape with the appropriately positioned spigot may then be placed over the upper foam layer and the wound as a whole, extending two or more inches over the skin surrounding the wound, and adhesively holding the dressing in place. Application of a suction line as described above draws the entire dressing onto the wound and serves to initiate the flow of effluent through the dressing.
The thickness of the upper and lower foam layers is determined in part by the desire to have a flat profile to the dressing when it is in place. The more rigid upper layer of foam may, in the preferred embodiment, have a thickness on the order of 25 to 75 mm (1 inch to 3 inches) uncompressed. Its rigidity should limit compression to 80% - 90% under the negative pressures normally associated with wound suction and the like. The more pliable lower foam layer, where employed, should have a thickness on the order of 5 to 15 mm, e.g. 5 to 10 mm (about 1/4 to 3/4 inch) so as to be capable of being easily inserted into the wound.
The structure of the present invention may likewise be utilized on the surface of the skin when the open wound is not associated with an internal cavity or the like.
In such a case the periphery of the elastomeric lower envelope may contact the skin surrounding the wound. This is appropriate as long as the periphery of the drape covering the upper foam layer extends suitably beyond the lower envelope to adhere to the skin and seal the dressing. It therefore becomes apparent that the lower elastomeric envelope may be pre-made in a variety of shapes and sizes while the upper foam layer and the drape may be cut, at the time the dressing is placed on the wound, to the appropriate size and configuration.
Figure 2 discloses an alternate preferred embodiment of the present invention wherein the single lower layer of foam shown in Figure 1 is replaced with a double layer of foam. In this embodiment, elastomeric envelope 38 encloses a first lower foam layer 40 and a second lower foam layer 42. The advantage realized by this arrangement lies in the offset positioning of the holes interspersed in both foam layers.
Holes 34 punctuating the lower wall 30 of elastomeric envelope 38 remain positioned in line with the "sink" holes positioned in the second (bottom) layer of foam 42.
Holes 32 punctuating the upper wall 28 of elastomeric envelope 38 are, as described above, offset from alignment with holes 34 in the lower surface of the envelope, but are aligned with the "sink" holes positioned in the first (top) layer of foam 40. Under this structure further dispersion of the flow of fluid occurs thus decreasing the localization of clogging debris and prolonging the effective life of the dressing. The remaining components, applications, and methods of use of the dressing are as described above in conjunction with Figure 1.
The present invention has been described in conjunction with certain preferred embodiments. Alternative embodiments and further applications of the invention will be anticipated by those skilled in the art without departure from the basic concepts and principles of the invention. Certain materials have been described as suitable for the specific layers of foam and film although a variety of similar materials would be equally suitable. Certain geometries and dimensions have been described as appropriate under various conditions and with various applications of the dressing, especially in conjunction with open and re-enterable abdominal wounds. These geometries and dimensions are not intended as limiting but are described as representative of the various shapes and sizes possible using the fundamental layered structure of the dressing. The scope of the invention is therefore not limited by the foregoing description but is best defined by the specific claims that follow.
Claims (18)
1. A removable wound closure comprising:
a porous pad which is permeable to fluids for placement on or in a wound, the porous pad comprising:
a polymer foam layer having interconnecting cells; and a first sheet of flexible film having a plurality of holes distributed over its surface, the first sheet of flexible film being in contact with a surface of the foam layer so that in use, the first sheet of flexible film is disposed between, and in contact with both of, the surface of the wound and the foam layer, the first sheet of flexible film comprising an elastomeric film or a flexible plastics film, whereby the first sheet of flexible film is resistant to the formation of adhesions with the wound and is thereby easily removable from the wound;
a film drape which is impermeable to liquids for placement over the porous pad, the film drape having an adhesive perimeter for sealing to an area of skin surrounding the wound; and connection means extending through the film drape and in flow communication with the porous pad for connection to a source of negative pressure for stimulating a flow of exuded fluids from the wound.
a porous pad which is permeable to fluids for placement on or in a wound, the porous pad comprising:
a polymer foam layer having interconnecting cells; and a first sheet of flexible film having a plurality of holes distributed over its surface, the first sheet of flexible film being in contact with a surface of the foam layer so that in use, the first sheet of flexible film is disposed between, and in contact with both of, the surface of the wound and the foam layer, the first sheet of flexible film comprising an elastomeric film or a flexible plastics film, whereby the first sheet of flexible film is resistant to the formation of adhesions with the wound and is thereby easily removable from the wound;
a film drape which is impermeable to liquids for placement over the porous pad, the film drape having an adhesive perimeter for sealing to an area of skin surrounding the wound; and connection means extending through the film drape and in flow communication with the porous pad for connection to a source of negative pressure for stimulating a flow of exuded fluids from the wound.
2. A closure according to claim 1 wherein the holes in the first sheet of flexible film comprise slits or slots.
3. A closure according to claim 1 or 2 wherein the connection means comprises a flange portion which is disposed between the film drape and the porous pad and a tubular portion which extends through the drape for connection to the source of negative pressure.
4. A closure according to claim 3 wherein the flange portion of the connection means includes channels for directing flow of fluid from the porous pad to the tubular portion.
5. A removable wound closure comprising:
a porous pad which is permeable to fluids for placement on or in a wound, the porous pad comprising:
a polymer foam layer having interconnecting cells; and a first sheet of flexible film having a plurality of holes distributed over its surface, the first sheet of flexible film being in contact with a surface of the foam layer so that in use, the first sheet of flexible film is disposed between, and in contact with both of, the surface of the wound and the foam layer, the first sheet of flexible film comprising an elastomeric film or a flexible plastics film;
a film drape which is impermeable to liquids for placement over the porous pad, the film drape having an adhesive perimeter for sealing to an area of skin surrounding the wound;
connection means extending through the film drape and in flow communication with the porous pad for connection to a source of negative pressure for stimulating a flow of exuded fluids from the wound; and a second sheet of flexible film disposed between the film drape and the porous pad, said second sheet of flexible film being sealed to the first sheet of flexible film around their respective perimeters to form an envelope and the second sheet of flexible film being formed with holes so that when the connection means is connected to a source of negative pressure, wound exudate is drawn through the porous pad and out of the porous pad through the holes in the second sheet of flexible film.
a porous pad which is permeable to fluids for placement on or in a wound, the porous pad comprising:
a polymer foam layer having interconnecting cells; and a first sheet of flexible film having a plurality of holes distributed over its surface, the first sheet of flexible film being in contact with a surface of the foam layer so that in use, the first sheet of flexible film is disposed between, and in contact with both of, the surface of the wound and the foam layer, the first sheet of flexible film comprising an elastomeric film or a flexible plastics film;
a film drape which is impermeable to liquids for placement over the porous pad, the film drape having an adhesive perimeter for sealing to an area of skin surrounding the wound;
connection means extending through the film drape and in flow communication with the porous pad for connection to a source of negative pressure for stimulating a flow of exuded fluids from the wound; and a second sheet of flexible film disposed between the film drape and the porous pad, said second sheet of flexible film being sealed to the first sheet of flexible film around their respective perimeters to form an envelope and the second sheet of flexible film being formed with holes so that when the connection means is connected to a source of negative pressure, wound exudate is drawn through the porous pad and out of the porous pad through the holes in the second sheet of flexible film.
6. A closure according to claim 5 wherein the holes in the first sheet of flexible film comprise slits or slots.
7. A closure according to claim 5 or 6 wherein the connection means comprises a flange portion which is disposed between the film drape and the porous pad and a tubular portion which extends through the drape for connection to the source of negative pressure.
8. A closure according to claim 7 wherein the flange portion of the connection means includes channels for directing flow of fluid from the porous pad to the tubular portion.
9. A closure according to any one of claims 5 to 8 wherein the respective perimeters of the first and second sheets of flexible film are sealed together to form a flange of joined film extending outwardly beyond the perimeter of the porous pad.
10. A closure according to any one of claims 5 to 9 wherein the holes in the first sheet of flexible film are offset with respect to the holes in the second sheet of flexible film.
11. A closure according to any one of claims 5 to 10 wherein the holes in the first sheet of flexible film are aligned with holes within a first contiguous portion of the polymer foam layer and the holes in the second flexible sheet are aligned with holes in a second contiguous portion of the polymer foam layer.
12. A closure according to claim 11 wherein the porous pad comprises at least one further polymer foam layer having interconnecting cells.
13. A closure according to any one of claims 5 to 12 wherein an additional porous pad is disposed between the second sheet of flexible film and the film drape.
14. A closure according to any one of claims 5 to 13 wherein the first sheet of flexible film is resistant to the formation of adhesions with the wound and is thereby easily removable from the wound.
15. A closure according to any one of claims 1 to 14 wherein the porous pad comprises a polymer foam layer having at least 90% of interconnecting cells.
16. A removable wound dressing, especially as would be applied to a large open wound that requires the drainage of fluid therefrom, said dressing comprising:
a first porous pad, permeable to fluids, for placement in contact with the wound, said first porous pad comprising:
a foam pad comprising a polymer based foam having interconnecting cells and having a plurality of dispersed transverse holes; and an elastomeric envelope comprising first and second sheets of elastomeric film sealed at their periphery and enclosing said foam pad, each of said first and second sheets of elastomeric film having a plurality of dispersed holes therein;
a film drape, impermeable to fluids, for placement over said first porous pad, said film drape comprising an adhesive perimeter for adhering said film drape to an area of skin surrounding said wound when said first porous pad is placed in contact with said wound;
and a tube connector positioned through said film drape and in flow communication with said first porous pad, for connection to a source of negative pressure for initiating a flow of exuded fluids from said wound.
a first porous pad, permeable to fluids, for placement in contact with the wound, said first porous pad comprising:
a foam pad comprising a polymer based foam having interconnecting cells and having a plurality of dispersed transverse holes; and an elastomeric envelope comprising first and second sheets of elastomeric film sealed at their periphery and enclosing said foam pad, each of said first and second sheets of elastomeric film having a plurality of dispersed holes therein;
a film drape, impermeable to fluids, for placement over said first porous pad, said film drape comprising an adhesive perimeter for adhering said film drape to an area of skin surrounding said wound when said first porous pad is placed in contact with said wound;
and a tube connector positioned through said film drape and in flow communication with said first porous pad, for connection to a source of negative pressure for initiating a flow of exuded fluids from said wound.
17. A removable wound dressing according to claim 16 further comprising:
a second porous pad, permeable to fluids, for placement over, and in contact with, said first porous pad, said second porous pad comprising a polymer foam having interconnecting cells wherein said dispersed holes of said first sheet of elastomeric film are offset from alignment with said dispersed transverse holes in said foam pad, and said dispersed holes in said second sheet of elastomeric film are aligned with said dispersed transverse holes in said foam pad wherein said second sheet of elastomeric film is in contact with the wound when the removable wound dressing is in use.
a second porous pad, permeable to fluids, for placement over, and in contact with, said first porous pad, said second porous pad comprising a polymer foam having interconnecting cells wherein said dispersed holes of said first sheet of elastomeric film are offset from alignment with said dispersed transverse holes in said foam pad, and said dispersed holes in said second sheet of elastomeric film are aligned with said dispersed transverse holes in said foam pad wherein said second sheet of elastomeric film is in contact with the wound when the removable wound dressing is in use.
18. A removable wound dressing, especially as would be applied to a large open wound that requires the drainage of fluid there from, the dressing comprising:
a first porous pad, permeable to fluids, for placement in contact with the wound, said first porous pad comprising:
a foam pad comprising a polymer based foam having interconnecting cells and having a plurality of dispersed transverse holes; and an elastomeric envelope comprising first and second sheets of elastomeric film, sealed at their periphery, and enclosing said foam pad, said first sheet of elastomeric film having a plurality of dispersed holes therein, said dispersed holes being offset from alignment with said dispersed holes in said foam pad, said second sheet of elastomeric film having a plurality of dispersed holes therein, said dispersed holes in said second sheet being aligned with said dispersed holes in said foam pad;
a second porous pad, permeable to fluids, for placement over, and in contact with, said first porous pad, said second porous pad comprising a polymer foam having interconnecting cells;
a film drape, impermeable to fluids, for placement over said second porous pad and said first porous pad placed over said wound, said film drape comprising an adhesive perimeter for adhering said drape to an area of skin surrounding said wound;
and a tubular connector positioned through said film drape and in flow communication with said second porous pad, for connection to a source of negative pressure for initiating a flow of exuded fluids from said wound.
a first porous pad, permeable to fluids, for placement in contact with the wound, said first porous pad comprising:
a foam pad comprising a polymer based foam having interconnecting cells and having a plurality of dispersed transverse holes; and an elastomeric envelope comprising first and second sheets of elastomeric film, sealed at their periphery, and enclosing said foam pad, said first sheet of elastomeric film having a plurality of dispersed holes therein, said dispersed holes being offset from alignment with said dispersed holes in said foam pad, said second sheet of elastomeric film having a plurality of dispersed holes therein, said dispersed holes in said second sheet being aligned with said dispersed holes in said foam pad;
a second porous pad, permeable to fluids, for placement over, and in contact with, said first porous pad, said second porous pad comprising a polymer foam having interconnecting cells;
a film drape, impermeable to fluids, for placement over said second porous pad and said first porous pad placed over said wound, said film drape comprising an adhesive perimeter for adhering said drape to an area of skin surrounding said wound;
and a tubular connector positioned through said film drape and in flow communication with said second porous pad, for connection to a source of negative pressure for initiating a flow of exuded fluids from said wound.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0011202.9 | 2000-05-09 | ||
GBGB0011202.9A GB0011202D0 (en) | 2000-05-09 | 2000-05-09 | Abdominal wound dressing |
PCT/GB2001/002035 WO2001085248A1 (en) | 2000-05-09 | 2001-05-09 | Abdominal wound dressing |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2408305A1 CA2408305A1 (en) | 2001-11-15 |
CA2408305C true CA2408305C (en) | 2007-09-25 |
Family
ID=9891275
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002408305A Expired - Lifetime CA2408305C (en) | 2000-05-09 | 2001-05-09 | Abdominal wound dressing |
Country Status (21)
Country | Link |
---|---|
US (6) | US7381859B2 (en) |
EP (1) | EP1284777B1 (en) |
JP (2) | JP4741160B2 (en) |
KR (1) | KR100798497B1 (en) |
CN (1) | CN100335145C (en) |
AT (1) | ATE322303T1 (en) |
AU (1) | AU779655B2 (en) |
BR (1) | BRPI0110682B8 (en) |
CA (1) | CA2408305C (en) |
DE (1) | DE60118546T2 (en) |
DK (1) | DK1284777T3 (en) |
ES (1) | ES2261397T3 (en) |
GB (2) | GB0011202D0 (en) |
HK (1) | HK1053434A1 (en) |
IL (2) | IL152686A0 (en) |
MX (1) | MXPA02010984A (en) |
NZ (1) | NZ522486A (en) |
PT (1) | PT1284777E (en) |
RU (1) | RU2261692C2 (en) |
WO (1) | WO2001085248A1 (en) |
ZA (1) | ZA200209097B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8715256B2 (en) | 2007-11-21 | 2014-05-06 | Smith & Nephew Plc | Vacuum assisted wound dressing |
US8829263B2 (en) | 2005-09-07 | 2014-09-09 | Smith & Nephew, Inc. | Self contained wound dressing with micropump |
US9579431B2 (en) | 2009-04-17 | 2017-02-28 | Kalypto Medical, Inc. | Negative pressure wound therapy device |
Families Citing this family (545)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9523253D0 (en) * | 1995-11-14 | 1996-01-17 | Mediscus Prod Ltd | Portable wound treatment apparatus |
US6458109B1 (en) | 1998-08-07 | 2002-10-01 | Hill-Rom Services, Inc. | Wound treatment apparatus |
US6764462B2 (en) | 2000-11-29 | 2004-07-20 | Hill-Rom Services Inc. | Wound treatment apparatus |
US6824533B2 (en) | 2000-11-29 | 2004-11-30 | Hill-Rom Services, Inc. | Wound treatment apparatus |
US7592017B2 (en) | 2000-03-10 | 2009-09-22 | Mast Biosurgery Ag | Resorbable thin membranes |
GB0011202D0 (en) | 2000-05-09 | 2000-06-28 | Kci Licensing Inc | Abdominal wound dressing |
US20010043943A1 (en) | 2000-05-22 | 2001-11-22 | Coffey Arthur C. | Combination SIS and vacuum bandage and method |
US6855135B2 (en) * | 2000-11-29 | 2005-02-15 | Hill-Rom Services, Inc. | Vacuum therapy and cleansing dressing for wounds |
US6685681B2 (en) | 2000-11-29 | 2004-02-03 | Hill-Rom Services, Inc. | Vacuum therapy and cleansing dressing for wounds |
US7763769B2 (en) | 2001-02-16 | 2010-07-27 | Kci Licensing, Inc. | Biocompatible wound dressing |
US7700819B2 (en) * | 2001-02-16 | 2010-04-20 | Kci Licensing, Inc. | Biocompatible wound dressing |
US7645269B2 (en) | 2001-04-30 | 2010-01-12 | Kci Licensing, Inc. | Gradient wound treatment system and method |
US7108683B2 (en) * | 2001-04-30 | 2006-09-19 | Kci Licensing, Inc | Wound therapy and tissue management system and method with fluid differentiation |
US7364565B2 (en) | 2001-07-27 | 2008-04-29 | Ramot At Tel Aviv University Ltd. | Controlled enzymatic removal and retrieval of cells |
CA2462877A1 (en) * | 2001-10-11 | 2003-04-17 | Hill-Rom Services, Inc. | Waste container for negative pressure therapy |
US6648862B2 (en) | 2001-11-20 | 2003-11-18 | Spheric Products, Ltd. | Personally portable vacuum desiccator |
WO2003057070A2 (en) * | 2001-12-26 | 2003-07-17 | Hill-Rom Services Inc. | Vented vacuum bandage and method |
CA2468309A1 (en) * | 2001-12-26 | 2003-07-17 | Robert Petrosenko | Wound vacuum therapy dressing kit |
CA2468307A1 (en) | 2001-12-26 | 2003-07-17 | Hill-Rom Services, Inc. | Vacuum bandage packing |
WO2003086232A2 (en) * | 2002-04-10 | 2003-10-23 | Hill-Rom Services, Inc. | Access openings in vacuum bandage |
MXPA05001149A (en) * | 2002-07-31 | 2005-11-23 | Macropore Biosurgery Inc | Apparatus and method for preventing adhesions between an implant and surrounding tissues. |
US8048444B2 (en) * | 2002-07-31 | 2011-11-01 | Mast Biosurgery Ag | Apparatus and method for preventing adhesions between an implant and surrounding tissues |
JP2005536275A (en) | 2002-08-21 | 2005-12-02 | ヒル−ロム サービシズ,インコーポレイテッド | Wound packing to prevent wound closure |
US7846141B2 (en) | 2002-09-03 | 2010-12-07 | Bluesky Medical Group Incorporated | Reduced pressure treatment system |
US7704520B1 (en) | 2002-09-10 | 2010-04-27 | Mast Biosurgery Ag | Methods of promoting enhanced healing of tissues after cardiac surgery |
US7815616B2 (en) | 2002-09-16 | 2010-10-19 | Boehringer Technologies, L.P. | Device for treating a wound |
US7625362B2 (en) | 2003-09-16 | 2009-12-01 | Boehringer Technologies, L.P. | Apparatus and method for suction-assisted wound healing |
GB0224986D0 (en) | 2002-10-28 | 2002-12-04 | Smith & Nephew | Apparatus |
AU2002347516A1 (en) * | 2002-11-07 | 2004-06-07 | Klaus Uwe Grutzner | Endoscopic wound care treatment system and method |
US7976519B2 (en) * | 2002-12-31 | 2011-07-12 | Kci Licensing, Inc. | Externally-applied patient interface system and method |
WO2004060148A2 (en) | 2002-12-31 | 2004-07-22 | Kci Licensing, Inc. | Tissue closure treatment system and method with externally-applied patient interface |
US20060083767A1 (en) * | 2003-02-27 | 2006-04-20 | Kai Deusch | Surgical prosthesis having biodegradable and nonbiodegradable regions |
JP4411929B2 (en) * | 2003-02-28 | 2010-02-10 | 株式会社日立製作所 | Backup method, system, and program |
US20100210986A1 (en) * | 2003-07-22 | 2010-08-19 | Sanders T Blane | Negative pressure wound treatment dressings and systems |
US8444611B2 (en) * | 2003-07-22 | 2013-05-21 | Kci Licensing, Inc. | Negative pressure wound treatment dressing |
US7942866B2 (en) | 2003-08-28 | 2011-05-17 | Boehringer Technologies, L.P. | Device for treating a wound |
US7361184B2 (en) * | 2003-09-08 | 2008-04-22 | Joshi Ashok V | Device and method for wound therapy |
US20050065484A1 (en) * | 2003-09-10 | 2005-03-24 | Watson Richard L. | Wound healing apparatus with bioabsorbable material and suction tubes |
US20100266663A1 (en) * | 2003-09-10 | 2010-10-21 | Calhoun Christopher J | Tissue-treating implantable compositions |
WO2005036465A1 (en) * | 2003-10-14 | 2005-04-21 | Koninklijke Philips Electronics N.V. | Video encoding method and device |
GB0325120D0 (en) | 2003-10-28 | 2003-12-03 | Smith & Nephew | Apparatus with actives |
US11298453B2 (en) | 2003-10-28 | 2022-04-12 | Smith & Nephew Plc | Apparatus and method for wound cleansing with actives |
US8758313B2 (en) | 2003-10-28 | 2014-06-24 | Smith & Nephew Plc | Apparatus and method for wound cleansing with actives |
GB0325130D0 (en) * | 2003-10-28 | 2003-12-03 | Smith & Nephew | Apparatus with scaffold |
GB0518826D0 (en) * | 2005-09-15 | 2005-10-26 | Smith & Nephew | Apparatus with actives from tissue - exudialysis |
GB0325126D0 (en) | 2003-10-28 | 2003-12-03 | Smith & Nephew | Apparatus with heat |
GB0325129D0 (en) | 2003-10-28 | 2003-12-03 | Smith & Nephew | Apparatus in situ |
US7128735B2 (en) | 2004-01-02 | 2006-10-31 | Richard Scott Weston | Reduced pressure wound treatment appliance |
US8100887B2 (en) | 2004-03-09 | 2012-01-24 | Bluesky Medical Group Incorporated | Enclosure-based reduced pressure treatment system |
US7754937B2 (en) * | 2004-03-18 | 2010-07-13 | Boehringer Technologies, L.P. | Wound packing material for use with suction |
GB0407502D0 (en) | 2004-04-02 | 2004-05-05 | Inotec Amd Ltd | Hyperbaric dressing |
US7708724B2 (en) | 2004-04-05 | 2010-05-04 | Blue Sky Medical Group Incorporated | Reduced pressure wound cupping treatment system |
US7790945B1 (en) | 2004-04-05 | 2010-09-07 | Kci Licensing, Inc. | Wound dressing with absorption and suction capabilities |
US7909805B2 (en) | 2004-04-05 | 2011-03-22 | Bluesky Medical Group Incorporated | Flexible reduced pressure treatment appliance |
US10058642B2 (en) | 2004-04-05 | 2018-08-28 | Bluesky Medical Group Incorporated | Reduced pressure treatment system |
US8062272B2 (en) | 2004-05-21 | 2011-11-22 | Bluesky Medical Group Incorporated | Flexible reduced pressure treatment appliance |
US7776028B2 (en) | 2004-04-05 | 2010-08-17 | Bluesky Medical Group Incorporated | Adjustable overlay reduced pressure wound treatment system |
US7884258B2 (en) * | 2004-04-13 | 2011-02-08 | Boehringer Technologies, L.P. | Wound contact device |
US7951124B2 (en) * | 2004-04-13 | 2011-05-31 | Boehringer Technologies, Lp | Growth stimulating wound dressing with improved contact surfaces |
US10413644B2 (en) | 2004-04-27 | 2019-09-17 | Smith & Nephew Plc | Wound treatment apparatus and method |
GB0409446D0 (en) | 2004-04-28 | 2004-06-02 | Smith & Nephew | Apparatus |
US8529548B2 (en) | 2004-04-27 | 2013-09-10 | Smith & Nephew Plc | Wound treatment apparatus and method |
US7753894B2 (en) | 2004-04-27 | 2010-07-13 | Smith & Nephew Plc | Wound cleansing apparatus with stress |
GB0508529D0 (en) * | 2005-04-27 | 2005-06-01 | Smith & Nephew | Sai with microstress |
GB0508531D0 (en) | 2005-04-27 | 2005-06-01 | Smith & Nephew | Sai with ultrasound |
GB0424046D0 (en) * | 2004-10-29 | 2004-12-01 | Smith & Nephew | Apparatus |
US7998125B2 (en) | 2004-05-21 | 2011-08-16 | Bluesky Medical Group Incorporated | Hypobaric chamber treatment system |
US20080091277A1 (en) * | 2004-08-13 | 2008-04-17 | Kai Deusch | Surgical prosthesis having biodegradable and nonbiodegradable regions |
CA2573564C (en) * | 2004-08-13 | 2010-04-06 | Mast Biosurgery Ag | Surgical prosthesis having biodegradable and nonbiodegradable regions |
US20110313373A1 (en) * | 2004-11-02 | 2011-12-22 | Birgit Riesinger | Device for the treatment of wounds using a vacuum |
DE202004017052U1 (en) * | 2004-11-02 | 2005-06-09 | Riesinger, Birgit | Device for wound treatment using negative pressure |
US7485112B2 (en) * | 2004-11-08 | 2009-02-03 | Boehringer Technologies, L.P. | Tube attachment device for wound treatment |
DE202004018245U1 (en) * | 2004-11-24 | 2005-07-07 | Riesinger, Birgit | Drainage device for treating wounds using reduced pressure has absorption body with layer(s) of textile section enriched with super-absorbents enclosed by liquid transmissive sleeve; absorbed wound secretions remain in absorption body |
SE0500061L (en) * | 2005-01-11 | 2006-07-12 | Moelnlycke Health Care Ab | Sealing film dressing |
US20070027414A1 (en) * | 2005-07-28 | 2007-02-01 | Integra Lifesciences Corporation | Laminar construction negative pressure wound dressing including bioabsorbable material |
US20080119877A1 (en) * | 2005-08-12 | 2008-05-22 | Kai Deusch | Surgical prosthesis having biodegradable and nonbiodegradable regions |
WO2007030598A2 (en) * | 2005-09-07 | 2007-03-15 | Tyco Healthcare Group Lp | Wound dressing with vacuum reservoir |
EP2708216B1 (en) * | 2005-09-07 | 2016-04-06 | Smith & Nephew, Inc. | Self contained wound dressing apparatus |
GB0524027D0 (en) * | 2005-11-25 | 2006-01-04 | Smith & Nephew | Fibrous dressing |
CA2633910C (en) | 2006-01-23 | 2012-07-03 | Kci Licensing, Inc. | System and method for treating a wound using ultrasonic debridement |
JP4719278B2 (en) * | 2006-02-06 | 2011-07-06 | ケーシーアイ ライセンシング インコーポレイテッド | Adapter for applying negative pressure wound therapy to tissue sites |
US7779625B2 (en) | 2006-05-11 | 2010-08-24 | Kalypto Medical, Inc. | Device and method for wound therapy |
US7615036B2 (en) * | 2006-05-11 | 2009-11-10 | Kalypto Medical, Inc. | Device and method for wound therapy |
US8338402B2 (en) * | 2006-05-12 | 2012-12-25 | Smith & Nephew Plc | Scaffold |
US8551075B2 (en) | 2006-06-02 | 2013-10-08 | Kci Medical Resources | Assemblies, systems, and methods for vacuum assisted internal drainage during wound healing |
US8715267B2 (en) * | 2006-06-02 | 2014-05-06 | Kci Medical Resources | Assemblies, systems, and methods for vacuum assisted internal drainage during wound healing |
WO2007143179A2 (en) | 2006-06-02 | 2007-12-13 | Bengtson Bradley P | Assemblies, systems, and methods for vacuum assisted internal drainage during wound healing |
WO2008005532A2 (en) * | 2006-07-07 | 2008-01-10 | Boehringer Technologies L.P. | Growth stimulating wound dressing with improved contact surfaces |
SE0601536L (en) * | 2006-07-11 | 2008-01-12 | Moelnlycke Health Care Ab | Coil connection |
GB0712735D0 (en) | 2006-07-26 | 2007-08-08 | Smith & Nephew | Dressing |
US9820888B2 (en) * | 2006-09-26 | 2017-11-21 | Smith & Nephew, Inc. | Wound dressing |
ATE456383T1 (en) | 2006-09-28 | 2010-02-15 | Tyco Healthcare | PORTABLE WOUND THERAPY SYSTEM |
DE102006047041A1 (en) * | 2006-10-02 | 2008-04-10 | Birgit Riesinger | Areal absorbent body |
US7967810B2 (en) | 2006-10-20 | 2011-06-28 | Mary Beth Kelley | Sub-atmospheric wound-care system |
US7931651B2 (en) | 2006-11-17 | 2011-04-26 | Wake Lake University Health Sciences | External fixation assembly and method of use |
US8030534B2 (en) * | 2006-11-28 | 2011-10-04 | Boehringer Technologies, L.P. | Tunnel dressing for use with negative pressure wound therapy system |
US20080161778A1 (en) * | 2007-01-02 | 2008-07-03 | Brent Steward | Fluid isolation device and method for treatment of fistulas |
US8377016B2 (en) | 2007-01-10 | 2013-02-19 | Wake Forest University Health Sciences | Apparatus and method for wound treatment employing periodic sub-atmospheric pressure |
US9463119B2 (en) * | 2007-01-18 | 2016-10-11 | Abigo Medical Ab | Wound dressing with a bacterial adsorbing composition and moisture holding system |
US7758476B2 (en) * | 2007-02-06 | 2010-07-20 | Fitness Botics | Inflatable cushion bag for striking |
AU2015218431B2 (en) * | 2007-02-09 | 2017-05-11 | Solventum Intellectual Properties Company | A breathable interface system for topical reduced pressure |
AU2013221917B2 (en) * | 2007-02-09 | 2015-06-04 | Solventum Intellectual Properties Company | A breathable interface system for topical reduced pressure |
RU2453298C2 (en) * | 2007-02-09 | 2012-06-20 | КейСиАй Лайсензинг Инк. | Air-permeable interface system for local low pressure |
US10117977B2 (en) | 2007-03-14 | 2018-11-06 | The Board Of Trustees Of The Leland Stanford Junior University | Devices and methods for application of reduced pressure therapy |
WO2008142580A2 (en) * | 2007-03-16 | 2008-11-27 | Wolfe Tory Medical, Inc. | Temporary surgical closure for a body cavity |
DE102008020553A1 (en) | 2007-04-29 | 2008-10-30 | Iskia Gmbh & Co.Kg | Flat drainage for wound treatment |
CA2683175C (en) | 2007-05-10 | 2015-10-06 | Kci Licensing, Inc. | Reduced pressure wound dressing having a wound contact surface with columnar protrusions |
US9101357B2 (en) * | 2007-06-08 | 2015-08-11 | Board Of Trustees Of The University Of Arkansas | Physiologic abdominal closure |
GB0712737D0 (en) * | 2007-07-02 | 2007-08-08 | Smith & Nephew | Apparatus |
GB0712739D0 (en) | 2007-07-02 | 2007-08-08 | Smith & Nephew | Apparatus |
US7790946B2 (en) * | 2007-07-06 | 2010-09-07 | Tyco Healthcare Group Lp | Subatmospheric pressure wound therapy dressing |
GB0715212D0 (en) * | 2007-08-06 | 2007-09-12 | Smith & Nephew | Apparatus |
US20090043268A1 (en) * | 2007-08-06 | 2009-02-12 | Eddy Patrick E | Wound treatment system and suction regulator for use therewith |
US8211071B2 (en) * | 2007-08-21 | 2012-07-03 | Kci Licensing, Inc. | Reduced-pressure system and method employing a gasket |
KR101279723B1 (en) * | 2007-08-27 | 2013-06-28 | 마스트 바이오서저리 아게 | Resorbable barrier micro-membranes for attenuation of scar tissue during healing |
US20100034869A1 (en) * | 2007-08-27 | 2010-02-11 | Joerg Tessmar | Block-polymer membranes for attenuation of scar tissue |
US9023001B2 (en) * | 2007-09-12 | 2015-05-05 | Heal-Ex, Llc | Systems and methods for providing a debriding wound vacuum |
WO2009049058A1 (en) | 2007-10-10 | 2009-04-16 | Wake Forest University Health Sciences | Devices and methods for treating spinal cord tissue |
US8246590B2 (en) | 2007-10-11 | 2012-08-21 | Spiracur, Inc. | Closed incision negative pressure wound therapy device and methods of use |
US8647327B2 (en) | 2007-11-08 | 2014-02-11 | Medela Holding Ag | Test unit for wound drainage dressings |
EP2222261B1 (en) | 2007-11-13 | 2018-05-09 | Medela Holding AG | Wound drainage covering |
EP2217298B1 (en) | 2007-11-21 | 2015-11-11 | T.J. Smith & Nephew Limited | Suction device and dressing |
JP5613566B2 (en) * | 2007-11-21 | 2014-10-22 | スミス アンド ネフュー ピーエルシーSmith & Nephew Public Limited Company | Wound dressing |
DK3000448T3 (en) * | 2007-11-21 | 2019-01-21 | Smith & Nephew | Wound dressing |
US11253399B2 (en) | 2007-12-06 | 2022-02-22 | Smith & Nephew Plc | Wound filling apparatuses and methods |
US20130096518A1 (en) | 2007-12-06 | 2013-04-18 | Smith & Nephew Plc | Wound filling apparatuses and methods |
GB0723875D0 (en) | 2007-12-06 | 2008-01-16 | Smith & Nephew | Wound management |
GB0723872D0 (en) | 2007-12-06 | 2008-01-16 | Smith & Nephew | Apparatus for topical negative pressure therapy |
GB0723855D0 (en) | 2007-12-06 | 2008-01-16 | Smith & Nephew | Apparatus and method for wound volume measurement |
GB0723874D0 (en) * | 2007-12-06 | 2008-01-16 | Smith & Nephew | Dressing |
GB0724564D0 (en) * | 2007-12-18 | 2008-01-30 | Smith & Nephew | Portable wound therapy apparatus and method |
GB2455962A (en) | 2007-12-24 | 2009-07-01 | Ethicon Inc | Reinforced adhesive backing sheet, for plaster |
US8377017B2 (en) | 2008-01-03 | 2013-02-19 | Kci Licensing, Inc. | Low-profile reduced pressure treatment system |
US20090177051A1 (en) * | 2008-01-09 | 2009-07-09 | Heal-Ex, Llc | Systems and methods for providing sub-dressing wound analysis and therapy |
BRPI0906939A2 (en) | 2008-01-09 | 2017-06-13 | Univ Wake Forest Health Sciences | apparatus and method for treating injured central nervous system tissue. |
US8197507B2 (en) * | 2008-01-14 | 2012-06-12 | Sri International | Sutureless methods for laceration closure |
FR2927249B1 (en) * | 2008-02-08 | 2011-03-04 | Univ Joseph Fourier | DEVICE FOR HEMOSTATIC CONTROL OF BLOOD FLOW |
CA2912889C (en) | 2008-02-14 | 2018-06-05 | Spiracur Inc. | Devices and methods for treatment of damaged tissue |
US8449508B2 (en) * | 2008-03-05 | 2013-05-28 | Kci Licensing, Inc. | Dressing and method for applying reduced pressure to and collecting and storing fluid from a tissue site |
AU2014277788B2 (en) * | 2008-03-05 | 2016-11-03 | Solventum Intellectual Properties Company | Dressing and method for applying reduced pressure to and collecting and storing fluid from a tissue site |
EP2345438B2 (en) | 2008-03-05 | 2021-12-15 | KCI Licensing, Inc. | Dressing for applying reduced pressure to and collecting and storing fluid from a tissue site |
US8021347B2 (en) | 2008-07-21 | 2011-09-20 | Tyco Healthcare Group Lp | Thin film wound dressing |
US8298200B2 (en) | 2009-06-01 | 2012-10-30 | Tyco Healthcare Group Lp | System for providing continual drainage in negative pressure wound therapy |
US9033942B2 (en) | 2008-03-07 | 2015-05-19 | Smith & Nephew, Inc. | Wound dressing port and associated wound dressing |
GB0804654D0 (en) | 2008-03-13 | 2008-04-16 | Smith & Nephew | Vacuum closure device |
US20090234306A1 (en) | 2008-03-13 | 2009-09-17 | Tyco Healthcare Group Lp | Vacuum wound therapy wound dressing with variable performance zones |
US9199012B2 (en) | 2008-03-13 | 2015-12-01 | Smith & Nephew, Inc. | Shear resistant wound dressing for use in vacuum wound therapy |
WO2009114760A1 (en) | 2008-03-13 | 2009-09-17 | Kci Licensing, Inc. | Offloading and reduced-pressure treatment systems and methods |
SE533170C2 (en) * | 2008-04-09 | 2010-07-13 | Moelnlycke Health Care Ab | Device for treating wounds with suppression |
CN201200434Y (en) * | 2008-04-10 | 2009-03-04 | 叶松 | Negative-pressure wound plaster |
US8241260B2 (en) * | 2008-04-21 | 2012-08-14 | Enzysurge Ltd. | Liquid streaming devices for treating wounds, method of making such devices, and method of using such devices for treating wounds |
DE102008022608A1 (en) * | 2008-05-05 | 2009-11-12 | Otto-von-Guericke Universität Medizinische Fakultät | Drainage device for the areal removal of wound exudate and other body fluids |
GB0808376D0 (en) | 2008-05-08 | 2008-06-18 | Bristol Myers Squibb Co | Wound dressing |
US10912869B2 (en) | 2008-05-21 | 2021-02-09 | Smith & Nephew, Inc. | Wound therapy system with related methods therefor |
US8414519B2 (en) | 2008-05-21 | 2013-04-09 | Covidien Lp | Wound therapy system with portable container apparatus |
US8177763B2 (en) | 2008-09-05 | 2012-05-15 | Tyco Healthcare Group Lp | Canister membrane for wound therapy system |
US8007481B2 (en) | 2008-07-17 | 2011-08-30 | Tyco Healthcare Group Lp | Subatmospheric pressure mechanism for wound therapy system |
US8048046B2 (en) | 2008-05-21 | 2011-11-01 | Tyco Healthcare Group Lp | Wound therapy system with housing and canister support |
ITAR20080022A1 (en) * | 2008-05-26 | 2009-11-27 | Daniele Guidi | DRAINAGE DEVICE, IN PARTICULAR FOR ASPIRATION IN CASE OF SUCTION THERAPIES, FISTULAS, SURGICAL WOUND DEFICIENCIES, DECUBITUS INJURIES, TRAUMAS AND SIMILAR INJURIES. |
AU2009251802B2 (en) * | 2008-05-27 | 2013-05-30 | Smith & Nephew, Inc. | Control unit with pump module for a negative pressure wound therapy device |
ES2752806T3 (en) * | 2008-05-27 | 2020-04-06 | Smith & Nephew Inc | Negative pressure wound therapy device |
CN103977459B (en) * | 2008-05-30 | 2017-09-05 | 凯希特许有限公司 | Reduced-pressure, linear wound closing bolsters and system |
EP3797616A1 (en) | 2008-05-30 | 2021-03-31 | 3M Innovative Properties Co. | See-through, reduced-pressure dressings and systems |
US20100003306A1 (en) * | 2008-06-08 | 2010-01-07 | Mast Biosurgery Ag | Pre-shaped user-formable micro-membrane implants |
US20090304779A1 (en) * | 2008-06-08 | 2009-12-10 | Von Waldburg-Zeil Erich Graf | Micro-membrane implant with cusped opening |
GB0811572D0 (en) * | 2008-06-24 | 2008-07-30 | Smith & Nephew | Negitive pressure wound theraphy device |
US8257326B2 (en) | 2008-06-30 | 2012-09-04 | Tyco Healthcare Group Lp | Apparatus for enhancing wound healing |
JP2011526824A (en) * | 2008-07-06 | 2011-10-20 | マスト バイオサージェリー アクチェンゲゼルシャフト | Resorbable membrane transplantation method to reduce adhesions |
AU2009268997B2 (en) | 2008-07-08 | 2015-04-02 | Smith & Nephew Inc. | Portable negative pressure wound therapy device |
CA2730086C (en) * | 2008-07-11 | 2017-12-19 | Kci Licensing, Inc. | Manually-actuated, reduced-pressure systems for treating wounds |
US9289193B2 (en) | 2008-07-18 | 2016-03-22 | Wake Forest University Health Sciences | Apparatus and method for cardiac tissue modulation by topical application of vacuum to minimize cell death and damage |
DE202008009795U1 (en) | 2008-07-22 | 2008-09-25 | Neubauer, Norbert | wound dressing |
GB0813542D0 (en) * | 2008-07-24 | 2008-08-27 | Brightwake Ltd | Material for use as a wound packing element in particulary negative pressure wound therapy (NPWT) |
US20100036367A1 (en) * | 2008-08-05 | 2010-02-11 | Bluesky Medical Group, Inc. | Wound overlay with cuff for wound treatment employing reduced pressure |
HUE037556T2 (en) * | 2008-08-08 | 2018-09-28 | Smith & Nephew Inc | Wound dressing of continuous fibers |
GB0815078D0 (en) * | 2008-08-18 | 2008-09-24 | Inotec Amd Ltd | Hyperbaric dressing and method |
US8827983B2 (en) | 2008-08-21 | 2014-09-09 | Smith & Nephew, Inc. | Sensor with electrical contact protection for use in fluid collection canister and negative pressure wound therapy systems including same |
US8216198B2 (en) | 2009-01-09 | 2012-07-10 | Tyco Healthcare Group Lp | Canister for receiving wound exudate in a negative pressure therapy system |
US8251979B2 (en) | 2009-05-11 | 2012-08-28 | Tyco Healthcare Group Lp | Orientation independent canister for a negative pressure wound therapy device |
US9414968B2 (en) | 2008-09-05 | 2016-08-16 | Smith & Nephew, Inc. | Three-dimensional porous film contact layer with improved wound healing |
AU2009293350B2 (en) * | 2008-09-18 | 2014-11-27 | Solventum Intellectual Properties Company | Multi-layer dressings, systems, and methods for applying reduced pressure at a tissue site |
WO2010033271A1 (en) * | 2008-09-18 | 2010-03-25 | Kci Licensing, Inc. | Systems and methods for controlling inflammatory response |
GB0817796D0 (en) | 2008-09-29 | 2008-11-05 | Convatec Inc | wound dressing |
US8158844B2 (en) * | 2008-10-08 | 2012-04-17 | Kci Licensing, Inc. | Limited-access, reduced-pressure systems and methods |
AU2015258308B2 (en) * | 2008-10-29 | 2016-10-27 | Solventum Intellectual Properties Company | Open-cavity, reduced-pressure treatment devices and systems |
MX2011004468A (en) | 2008-10-29 | 2011-05-23 | Kci Licensing Inc | Medical canister connectors. |
AU2009310391B2 (en) * | 2008-10-29 | 2015-07-09 | Kci Licensing, Inc. | Modular, reduced-pressure, wound-closure systems and methods |
US20100331761A1 (en) * | 2009-01-21 | 2010-12-30 | The Cleveland Clinic Foundation | Apparatus and Method for Dermatological Wound Healing |
AU2016277595B2 (en) * | 2008-10-29 | 2018-10-18 | Solventum Intellectual Properties Company | Open-cavity, reduced-pressure treatment devices and systems |
BRPI0915237A2 (en) | 2008-11-14 | 2016-02-16 | Kci Licensing Inc | system for storing fluid removed from a tissue site, apparatus for storing liquid from a tissue site, method for storing liquid from a tissue site, and method for manufacturing an apparatus for storing liquid from a tissue site |
RU2011114003A (en) * | 2008-11-18 | 2012-12-27 | КейСиАй ЛАЙСЕНЗИНГ, ИНК. | COMPOSED LOW-PRESSURE HIGHWAYS |
AU2009324913A1 (en) * | 2008-11-25 | 2010-06-17 | Spiracur Inc. | Device for delivery of reduced pressure to body surfaces |
TWI384968B (en) * | 2008-12-11 | 2013-02-11 | Ind Tech Res Inst | Wound treatment apparatus |
TW201023927A (en) * | 2008-12-29 | 2010-07-01 | Ind Tech Res Inst | Processing system and collecting device thereof |
US8361043B2 (en) | 2009-01-07 | 2013-01-29 | Spiracur Inc. | Reduced pressure therapy of the sacral region |
US8162907B2 (en) | 2009-01-20 | 2012-04-24 | Tyco Healthcare Group Lp | Method and apparatus for bridging from a dressing in negative pressure wound therapy |
US8246591B2 (en) | 2009-01-23 | 2012-08-21 | Tyco Healthcare Group Lp | Flanged connector for wound therapy |
US20100191198A1 (en) * | 2009-01-26 | 2010-07-29 | Tyco Healthcare Group Lp | Wound Filler Material with Improved Nonadherency Properties |
US20100204752A1 (en) * | 2009-02-10 | 2010-08-12 | Tyco Healthcare Group Lp | Negative Pressure and Electrostimulation Therapy Apparatus |
US8167869B2 (en) | 2009-02-10 | 2012-05-01 | Tyco Healthcare Group Lp | Wound therapy system with proportional valve mechanism |
GB0902368D0 (en) | 2009-02-13 | 2009-04-01 | Smith & Nephew | Wound packing |
US8728045B2 (en) | 2009-03-04 | 2014-05-20 | Spiracur Inc. | Devices and methods to apply alternating level of reduced pressure to tissue |
US9173473B2 (en) * | 2009-03-05 | 2015-11-03 | Mystery Ranch | Shoulder strap retention device and method |
TWI384969B (en) * | 2009-03-12 | 2013-02-11 | Ind Tech Res Inst | Processing system and collecting device thereof |
KR101019714B1 (en) * | 2009-04-01 | 2011-03-07 | 쓰리디이미징앤시뮬레이션즈(주) | Apparatus for acquiring digital X-ray image |
US8444614B2 (en) | 2009-04-10 | 2013-05-21 | Spiracur, Inc. | Methods and devices for applying closed incision negative pressure wound therapy |
EP3235525B1 (en) * | 2009-04-10 | 2018-11-07 | KCI Licensing, Inc. | Devices for applying closed incision negative pressure wound therapy |
US8663132B2 (en) * | 2009-04-14 | 2014-03-04 | Kci Licensing, Inc. | Reduced-pressure treatment systems and methods employing a variable cover |
DE102009019646B4 (en) * | 2009-04-30 | 2015-04-30 | Lohmann & Rauscher Gmbh | Wound covering and method of manufacture |
ES1070675Y (en) * | 2009-05-20 | 2010-01-14 | Canada Juan Marquez | IMPROVED VACUUM TANK APPLICABLE AS POSTOPERATIVE COMPRESSION TREATMENT |
US20120130327A1 (en) * | 2009-05-20 | 2012-05-24 | Marquez Canada Juan | Perfecting of the improved vacuum dressing and the use thereof in vacuum-assisted therapy |
US20100305523A1 (en) * | 2009-05-27 | 2010-12-02 | Tyco Healthcare Group Lp | Active Exudate Control System |
US20100310632A1 (en) * | 2009-06-08 | 2010-12-09 | Von Waldburg-Zeil Erich Graf | Micro-membrane implant with cusped opening |
US20100310628A1 (en) * | 2009-06-08 | 2010-12-09 | Mast Biosurgery Ag | Pre-shaped user-formable micro-membrane implants |
US20100318043A1 (en) * | 2009-06-10 | 2010-12-16 | Tyco Healthcare Group Lp | Negative Pressure Wound Therapy Systems Capable of Vacuum Measurement Independent of Orientation |
US20110196321A1 (en) | 2009-06-10 | 2011-08-11 | Tyco Healthcare Group Lp | Fluid Collection Canister Including Canister Top with Filter Membrane and Negative Pressure Wound Therapy Systems Including Same |
US20100318071A1 (en) * | 2009-06-10 | 2010-12-16 | Tyco Healthcare Group Lp | Fluid Collection Canister Including Canister Top with Filter Membrane and Negative Pressure Wound Therapy Systems Including Same |
US20100324516A1 (en) * | 2009-06-18 | 2010-12-23 | Tyco Healthcare Group Lp | Apparatus for Vacuum Bridging and/or Exudate Collection |
TW201102116A (en) | 2009-07-13 | 2011-01-16 | Univ Nat Pingtung Sci & Tech | A portable negative-bias caring device |
US20110015589A1 (en) * | 2009-07-14 | 2011-01-20 | Pal Svedman | Disposable therapeutic device |
US20110112490A1 (en) * | 2009-07-14 | 2011-05-12 | Vogel David C | Releasably Sealable Wound Dressing for NPWT |
US20110015585A1 (en) * | 2009-07-14 | 2011-01-20 | Pal Svedman | Method and device for providing intermittent negative pressure wound healing |
US8444613B2 (en) * | 2009-07-14 | 2013-05-21 | Richard Vogel | Pump leak monitor for negative pressure wound therapy |
US20110015590A1 (en) * | 2009-07-14 | 2011-01-20 | Pal Svedman | Disposable therapeutic device |
US20110015619A1 (en) * | 2009-07-16 | 2011-01-20 | Pal Svedman | Wound dressings for negative pressure therapy in deep wounds and method of using |
WO2011017489A1 (en) | 2009-08-05 | 2011-02-10 | Tyco Healthcare Group Lp | Surgical wound dressing incorporating connected hydrogel beads having an embedded electrode therein |
CA2769671A1 (en) | 2009-08-13 | 2011-04-14 | Michael Simms Shuler | Methods and dressing systems for promoting healing of injured tissue |
US8690844B2 (en) * | 2009-08-27 | 2014-04-08 | Kci Licensing, Inc. | Re-epithelialization wound dressings and systems |
US20110054420A1 (en) * | 2009-08-27 | 2011-03-03 | Christopher Brian Locke | Reduced-pressure wound dressings and systems for re-epithelialization and granulation |
US20110112574A1 (en) * | 2009-09-11 | 2011-05-12 | Svedman Pal Paul | Device for manual traction wound closure |
DE202009013982U1 (en) | 2009-10-15 | 2010-02-18 | Neubauer, Norbert | Flat drainage for wound treatment |
US20110106058A1 (en) * | 2009-10-29 | 2011-05-05 | Pal Svedman | Adhesive Flange Attachment Reinforcer For Suction Port |
US20110106027A1 (en) * | 2009-11-05 | 2011-05-05 | Tyco Healthcare Group Lp | Chemically Coated Screen for Use with Hydrophobic Filters |
DE202009016804U1 (en) | 2009-12-12 | 2010-03-04 | Neubauer, Norbert | Labyrinth material for flat drainage for wound treatment |
DK2515961T3 (en) | 2009-12-22 | 2019-07-15 | Smith & Nephew Inc | APPARATUS AND METHODS FOR NEGATIVE PRESSURE WOUND THERAPY |
DE202009017621U1 (en) | 2009-12-29 | 2010-04-15 | Neubauer, Norbert | labyrinth drainage |
US8066243B2 (en) * | 2010-01-08 | 2011-11-29 | Richard C. Vogel | Adapter for portable negative pressure wound therapy device |
DE102010006273A1 (en) * | 2010-01-26 | 2011-07-28 | Paul Hartmann Aktiengesellschaft, 89522 | Connection device for use in the vacuum treatment of wounds |
DE102010008502B4 (en) * | 2010-02-18 | 2013-08-29 | Innovations-Transfer Uphoff Gmbh &.Co.Kg | Device for wound treatment |
US8791315B2 (en) | 2010-02-26 | 2014-07-29 | Smith & Nephew, Inc. | Systems and methods for using negative pressure wound therapy to manage open abdominal wounds |
US8721606B2 (en) * | 2010-03-11 | 2014-05-13 | Kci Licensing, Inc. | Dressings, systems, and methods for treating a tissue site |
US8469935B2 (en) | 2010-03-11 | 2013-06-25 | Kci Licensing, Inc. | Abdominal treatment systems, delivery devices, and methods |
US8882730B2 (en) | 2010-03-12 | 2014-11-11 | Kci Licensing, Inc. | Radio opaque, reduced-pressure manifolds, systems, and methods |
US9358158B2 (en) * | 2010-03-16 | 2016-06-07 | Kci Licensing, Inc. | Patterned neo-epithelialization dressings, systems, and methods |
US8814842B2 (en) | 2010-03-16 | 2014-08-26 | Kci Licensing, Inc. | Delivery-and-fluid-storage bridges for use with reduced-pressure systems |
MX335970B (en) * | 2010-03-23 | 2016-01-06 | Wuhan Vsd Medical Science & Technology Co Ltd | Medical vacuum sealing drainage device. |
US20110257611A1 (en) * | 2010-04-16 | 2011-10-20 | Kci Licensing, Inc. | Systems, apparatuses, and methods for sizing a subcutaneous, reduced-pressure treatment device |
US8604265B2 (en) | 2010-04-16 | 2013-12-10 | Kci Licensing, Inc. | Dressings and methods for treating a tissue site on a patient |
WO2011132043A1 (en) * | 2010-04-24 | 2011-10-27 | Carlos Richer | Liquid handling system designed to extract liquids from capillary structures using a vacuum source or a vacuum generator to be used on diapers and the like |
GB201006986D0 (en) * | 2010-04-27 | 2010-06-09 | Smith & Nephew | Wound dressing |
US9061095B2 (en) | 2010-04-27 | 2015-06-23 | Smith & Nephew Plc | Wound dressing and method of use |
GB201006985D0 (en) * | 2010-04-27 | 2010-06-09 | Smith & Nephew | Wound dressing |
GB201006983D0 (en) * | 2010-04-27 | 2010-06-09 | Smith & Nephew | Wound dressing |
US8623047B2 (en) * | 2010-04-30 | 2014-01-07 | Kci Licensing, Inc. | System and method for sealing an incisional wound |
USRE48117E1 (en) | 2010-05-07 | 2020-07-28 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
US10639404B2 (en) | 2010-06-03 | 2020-05-05 | Wound Healing Technologies, Llc | Wound dressing |
USD692565S1 (en) | 2010-06-03 | 2013-10-29 | Smith & Nephew, Inc. | Organ protection layer |
DE202010009148U1 (en) | 2010-06-16 | 2010-09-02 | Neubauer, Norbert | Suction device for wound treatment |
DE202010010840U1 (en) | 2010-07-29 | 2010-10-21 | Neubauer, Norbert | Vacuum system for small and medium wounds |
GB2482337B (en) * | 2010-07-30 | 2015-10-14 | Salts Healthcare Ltd | Wound management device |
EP2417947A1 (en) * | 2010-08-12 | 2012-02-15 | John Bennett | Integrated contoured negative pressure bandages |
TWI411427B (en) * | 2010-08-13 | 2013-10-11 | Wei Hua Lu | Minus-pressured bandage |
US8772567B2 (en) * | 2010-08-19 | 2014-07-08 | Paul Hartmann Ag | Use of a polyurethane foam as a wound dressing in negative pressure therapy |
DE102010034819A1 (en) | 2010-08-19 | 2012-02-23 | Paul Hartmann Ag | Use of a polyurethane foam as wound dressing in negative pressure therapy |
US20120046589A1 (en) * | 2010-08-19 | 2012-02-23 | Axel Eckstein | Wound dressing comprising foam and ointment base for negative pressure therapy |
ES2461916T3 (en) * | 2010-08-19 | 2014-05-21 | Paul Hartmann Ag | Dressing with foam content and ointment base for negative pressure therapy |
DE202010012324U1 (en) | 2010-09-08 | 2010-11-11 | Neubauer, Norbert | Suction device for wound treatment |
GB201015656D0 (en) | 2010-09-20 | 2010-10-27 | Smith & Nephew | Pressure control apparatus |
CA140188S (en) | 2010-10-15 | 2011-11-07 | Smith & Nephew | Medical dressing |
CA140189S (en) | 2010-10-15 | 2011-11-07 | Smith & Nephew | Medical dressing |
DE102010050251A1 (en) * | 2010-11-02 | 2012-05-03 | Alfons Erdmann | Device for extracting fluid from gas-tight flexible cover of body part of living being, has suction opening, which is arranged in cover, where partially strand-type suction body extends between cover and body part along surface of body part |
CN101972171B (en) * | 2010-11-02 | 2011-12-07 | 中国人民解放军第三军医大学第一附属医院 | Guide belly cavity surgical incision protector |
WO2013007973A2 (en) | 2011-07-14 | 2013-01-17 | Smith & Nephew Plc | Wound dressing and method of treatment |
DE102010052336A1 (en) | 2010-11-25 | 2012-05-31 | Paul Hartmann Ag | Wound dressing for the negative pressure therapy |
GB201020005D0 (en) | 2010-11-25 | 2011-01-12 | Smith & Nephew | Composition 1-1 |
EP2643412B1 (en) | 2010-11-25 | 2016-08-17 | Smith & Nephew PLC | Composition i-ii and products and uses thereof |
GB201020236D0 (en) | 2010-11-30 | 2011-01-12 | Convatec Technologies Inc | A composition for detecting biofilms on viable tissues |
WO2012071626A1 (en) | 2010-12-01 | 2012-06-07 | Daniel Eduard Kleiner | Device for use in endoluminal vacuum therapy |
ES2748519T3 (en) | 2010-12-08 | 2020-03-17 | Convatec Technologies Inc | Wound exudate system accessory |
CN103347561B (en) | 2010-12-08 | 2016-09-07 | 康沃特克科技公司 | For assessing the integrated system of wound exudate |
USD714433S1 (en) | 2010-12-22 | 2014-09-30 | Smith & Nephew, Inc. | Suction adapter |
CN103384538B (en) | 2010-12-22 | 2017-03-22 | 史密夫和内修有限公司 | Apparatuses and methods for negative pressure wound therapy |
EP2654640A1 (en) * | 2010-12-23 | 2013-10-30 | Alfons Erdmann | Device for suctioning a fluid from a cover of a body part |
GB2488749A (en) | 2011-01-31 | 2012-09-12 | Systagenix Wound Man Ip Co Bv | Laminated silicone coated wound dressing |
US9421132B2 (en) | 2011-02-04 | 2016-08-23 | University Of Massachusetts | Negative pressure wound closure device |
RU2756986C2 (en) | 2011-02-04 | 2021-10-08 | Юниверсити Оф Массачусетс | Wound closure device with the creation of negative pressure |
DE202011003808U1 (en) | 2011-03-11 | 2011-05-19 | Neubauer, Norbert, 38820 | Drainage device for wound treatment |
US8579990B2 (en) * | 2011-03-30 | 2013-11-12 | Ethicon, Inc. | Tissue repair devices of rapid therapeutic absorbency |
US20120253302A1 (en) * | 2011-04-04 | 2012-10-04 | Tyco Healthcare Group Lp | Negative Pressure Wound Therapy Dressing |
US9302034B2 (en) | 2011-04-04 | 2016-04-05 | Smith & Nephew, Inc. | Negative pressure wound therapy dressing |
CA2827086A1 (en) * | 2011-04-12 | 2013-02-14 | Kci Licensing, Inc. | Reduced-pressure dressings, systems, and methods with evaporative devices |
US9597484B2 (en) | 2011-04-15 | 2017-03-21 | University Of Massachusetts | Surgical cavity drainage and closure system |
GB201106491D0 (en) | 2011-04-15 | 2011-06-01 | Systagenix Wound Man Ip Co Bv | Patterened silicone coating |
RU2572005C2 (en) * | 2011-04-21 | 2015-12-27 | СМИТ ЭНД НЕФЬЮ ПиЭлСи | Control of blockage |
GB201108229D0 (en) | 2011-05-17 | 2011-06-29 | Smith & Nephew | Tissue healing |
US9058634B2 (en) | 2011-05-24 | 2015-06-16 | Kalypto Medical, Inc. | Method for providing a negative pressure wound therapy pump device |
BR112013030071A2 (en) | 2011-05-24 | 2016-09-20 | Kalypto Medical Inc | device with controller and pump modules to provide negative pressure for wound therapy |
US9067003B2 (en) | 2011-05-26 | 2015-06-30 | Kalypto Medical, Inc. | Method for providing negative pressure to a negative pressure wound therapy bandage |
TW201249489A (en) * | 2011-06-01 | 2012-12-16 | Suzric Entpr Co Ltd | Wound drainage equipment, conduit, connector and wound cover |
JP6000343B2 (en) | 2011-06-07 | 2016-09-28 | スミス アンド ネフュー ピーエルシーSmith & Nephew Public Limited Company | Wound contact member and method |
EP2532325B1 (en) | 2011-06-09 | 2014-03-05 | Paul Hartmann AG | Wound dressing comprising foam and cream base and swelling material for negative pressure therapy |
EP2532326B1 (en) | 2011-06-09 | 2016-03-30 | Paul Hartmann AG | Wound dressing comprising non-woven and salve basis for negative pressure therapy |
AU2012282862B2 (en) | 2011-07-08 | 2015-01-29 | The Cleveland Clinic Foundation | System for wound healing |
BR112014001112A2 (en) * | 2011-07-19 | 2019-04-02 | Shieldheart Medtech Ab | stabilizer for stabilizing the position of a wound dressing and / or barrier disc; barrier disc or wound dressing for use in treating a wound; method for controlling the position of a wound dressing or barrier disc in therapy for negative pressure injuries; method for maintaining or facilitating wound pressure transduction or drainage from a wound dressing or barrier disc in negative pressure wound treatment |
DE202011104078U1 (en) | 2011-08-05 | 2011-08-31 | Norbert Neubauer | Labyrinth - flat drain |
DE202011104473U1 (en) | 2011-08-13 | 2011-11-14 | Norbert Neubauer | Maze flat drain rail |
EP2944298B1 (en) * | 2011-08-31 | 2017-05-17 | KCI Licensing, Inc. | Inline storage pouches for use with body fluids |
GB201115182D0 (en) | 2011-09-02 | 2011-10-19 | Trio Healthcare Ltd | Skin contact material |
EP2567681B1 (en) | 2011-09-09 | 2014-11-12 | Paul Hartmann AG | Wound dressing for the abdominal area |
ES2523377T5 (en) | 2011-09-09 | 2018-04-19 | Paul Hartmann Ag | Abdominal dressing with application help |
CA2844663C (en) * | 2011-09-14 | 2019-09-24 | Kci Licensing, Inc. | Reduced-pressure systems and methods employing a leak-detection member |
US9393354B2 (en) | 2011-11-01 | 2016-07-19 | J&M Shuler Medical, Inc. | Mechanical wound therapy for sub-atmospheric wound care system |
US9084845B2 (en) | 2011-11-02 | 2015-07-21 | Smith & Nephew Plc | Reduced pressure therapy apparatuses and methods of using same |
JP6305927B2 (en) | 2011-11-15 | 2018-04-04 | ケーシーアイ ライセンシング インコーポレイテッド | Medical dressing with thermally increased vapor transmission and method for producing the same |
US20150159066A1 (en) | 2011-11-25 | 2015-06-11 | Smith & Nephew Plc | Composition, apparatus, kit and method and uses thereof |
GB2497406A (en) | 2011-11-29 | 2013-06-12 | Webtec Converting Llc | Dressing with a perforated binder layer |
GB201120693D0 (en) | 2011-12-01 | 2012-01-11 | Convatec Technologies Inc | Wound dressing for use in vacuum therapy |
DE102011121072A1 (en) * | 2011-12-09 | 2013-06-13 | Primed Halberstadt Medizintechnik Gmbh | Vacuum-assisted drainage system |
US9569566B2 (en) | 2011-12-12 | 2017-02-14 | Zam Research Llc | Simulation and control system and method using contact, pressure waves and factor controls for cell regeneration, tissue closure and related applications |
DE202011109057U1 (en) | 2011-12-14 | 2012-01-19 | Norbert Neubauer | Maze flat drain Bridge |
US10940047B2 (en) * | 2011-12-16 | 2021-03-09 | Kci Licensing, Inc. | Sealing systems and methods employing a hybrid switchable drape |
JP6320930B2 (en) | 2011-12-16 | 2018-05-09 | ケーシーアイ ライセンシング インコーポレイテッド | Peelable medical drape |
CN104053420B (en) * | 2012-02-02 | 2020-07-14 | 凯希特许有限公司 | Foam structure wound insert for directional granulation |
US8758315B2 (en) * | 2012-02-21 | 2014-06-24 | Kci Licensing, Inc. | Multi-orientation canister for use with a reduced pressure treatment system |
EP2825220B2 (en) | 2012-03-12 | 2021-03-03 | Smith & Nephew PLC | Reduced pressure apparatus and methods |
EP2827917B1 (en) | 2012-03-20 | 2019-10-16 | Smith & Nephew plc | Controlling operation of a reduced pressure therapy system based on dynamic duty cycle threshold determination |
USD733896S1 (en) | 2012-05-04 | 2015-07-07 | Genadyne Biotechnologies, Inc. | Abdominal dressing |
AU346291S (en) | 2012-05-15 | 2013-01-09 | Smith & Nephew | Medical dressing |
US9427505B2 (en) | 2012-05-15 | 2016-08-30 | Smith & Nephew Plc | Negative pressure wound therapy apparatus |
MX2014014266A (en) | 2012-05-22 | 2015-06-23 | Smith & Nephew | Apparatuses and methods for wound therapy. |
CN107280857A (en) | 2012-05-22 | 2017-10-24 | 史密夫及内修公开有限公司 | Wound healing device |
AU2013264934B2 (en) | 2012-05-23 | 2017-07-20 | Smith & Nephew Plc | Apparatuses and methods for negative pressure wound therapy |
CN104736110B (en) | 2012-05-24 | 2019-05-31 | 史密夫和内修有限公司 | Device and method for wound to be handled and closed using negative pressure |
JP6230166B2 (en) | 2012-06-03 | 2017-11-15 | ダニエル・エデュアード・クレイナー | Intraluminal negative pressure therapy device |
DE102012011422A1 (en) * | 2012-06-08 | 2013-12-12 | Gottlieb Binder Gmbh & Co. Kg | Medical device for the care of an individual |
EP2674186B1 (en) * | 2012-06-11 | 2021-12-29 | Carl Freudenberg KG | Fistula adapter device |
DE202012005923U1 (en) | 2012-06-16 | 2012-07-11 | Norbert Neubauer | Wound dressing for the treatment of wounds |
CN110448407B (en) | 2012-07-16 | 2022-08-09 | 史密夫和内修有限公司 | Negative pressure wound closure device |
IN2015DN00399A (en) * | 2012-07-16 | 2015-06-19 | Univ Massachusetts | |
EP3403624B1 (en) | 2012-07-30 | 2020-09-02 | KCI Licensing, Inc. | Reduced-pressure absorbent dressing, system for treating a tissue site, and method of manufacturing the dressing |
CA2880148C (en) | 2012-08-01 | 2021-07-20 | Smith & Nephew Plc | Wound dressing and method of treatment |
ES2625709T3 (en) | 2012-08-01 | 2017-07-20 | Smith & Nephew Plc. | Wound dressing |
DE202012007741U1 (en) | 2012-08-11 | 2012-09-17 | Norbert Neubauer | Labyrinth drain bridge |
US9345869B2 (en) | 2012-10-11 | 2016-05-24 | Owl Manor Medical, Llc | Oxygen diffusive wound dressings and methods of manufacturing and use |
US9572968B2 (en) * | 2012-10-11 | 2017-02-21 | Hanuman Pelican, Inc. | Compressive oxygen diffusive wound dressings |
CN111991092A (en) | 2012-11-16 | 2020-11-27 | 凯希特许有限公司 | Medical drape having patterned adhesive layer and method of making same |
CN103006325B (en) * | 2012-11-17 | 2015-05-20 | 田平绪 | Multifunctional medical trauma debriding device |
GB201222770D0 (en) | 2012-12-18 | 2013-01-30 | Systagenix Wound Man Ip Co Bv | Wound dressing with adhesive margin |
CA2895896A1 (en) | 2012-12-20 | 2014-06-26 | Convatec Technologies Inc. | Processing of chemically modified cellulosic fibres |
GB201317746D0 (en) | 2013-10-08 | 2013-11-20 | Smith & Nephew | PH indicator |
DE202013000916U1 (en) | 2013-01-30 | 2013-03-05 | Norbert Neubauer | Labyrinth floor drain rail |
DE102013002497A1 (en) * | 2013-02-13 | 2014-08-14 | Paul Hartmann Ag | Bandage kit for the treatment of wound cavities |
DE102013002521A1 (en) | 2013-02-13 | 2014-08-14 | Paul Hartmann Ag | Abdominal wound pad with lanyard |
EP2968016B1 (en) | 2013-03-13 | 2018-07-11 | Smith&Nephew, Inc. | Negative pressure wound closure device and systems and methods of use in treating wounds with negative pressure |
BR112015021123A2 (en) | 2013-03-14 | 2017-07-18 | Smith & Nephew | compressible wound fillers and systems and methods for use in treating negative pressure injuries |
EP2968013B1 (en) | 2013-03-14 | 2017-05-03 | KCI Licensing, Inc. | Absorbent dressing and method of making the same |
EP3238674B1 (en) * | 2013-03-14 | 2019-01-30 | KCI Licensing, Inc. | Absorbent dressing with hybrid drape |
US20160120706A1 (en) | 2013-03-15 | 2016-05-05 | Smith & Nephew Plc | Wound dressing sealant and use thereof |
BR112015020855A2 (en) | 2013-03-15 | 2017-07-18 | Smith & Nephew | wound dressing and treatment method |
US10695226B2 (en) | 2013-03-15 | 2020-06-30 | Smith & Nephew Plc | Wound dressing and method of treatment |
AU2014266943B2 (en) | 2013-05-10 | 2018-03-01 | Smith & Nephew Plc | Fluidic connector for irrigation and aspiration of wounds |
CN103691010B (en) * | 2013-06-04 | 2016-09-14 | 武汉维斯第医用科技股份有限公司 | Multi-layered foamed dressing for negative-pressure sealed drainage and preparation method thereof |
RU2016104132A (en) | 2013-07-16 | 2017-08-21 | СМИТ ЭНД НЕФЬЮ ПиЭлСи | DEVICE FOR TREATMENT OF THE RAS |
CN103405846B (en) * | 2013-07-17 | 2016-02-03 | 苏州爱得科技发展有限公司 | Medical pad pasting negative pressure drainage device |
WO2015021319A1 (en) * | 2013-08-07 | 2015-02-12 | Plurogen Therapeutics, Inc. | Delivery of medicants under continuous negative pressure dressing |
RU2567666C2 (en) * | 2013-08-16 | 2015-11-10 | Максим Васильевич Забелин | Method of creating active laparostomy |
EP3038667B1 (en) | 2013-08-26 | 2019-10-09 | KCI Licensing, Inc. | Dressing interface with moisture controlling feature and sealing function |
WO2015048864A1 (en) * | 2013-10-04 | 2015-04-09 | Rodrigues Junior Adilson Costa | Surgical kit for treating peritonitis |
EP3060181B1 (en) | 2013-10-21 | 2021-11-03 | Smith & Nephew, Inc. | Negative pressure wound closure device |
CN103520827B (en) * | 2013-10-26 | 2015-11-04 | 青岛市市立医院 | Carotid endarterectomy suction head |
WO2015065742A1 (en) | 2013-10-28 | 2015-05-07 | Kci Licensing, Inc. | Hybrid sealing tape |
US9925092B2 (en) | 2013-10-30 | 2018-03-27 | Kci Licensing, Inc. | Absorbent conduit and system |
TR201807060T4 (en) | 2013-10-30 | 2018-06-21 | Kci Licensing Inc | Winding with different sizes of perforations. |
EP3513773A1 (en) | 2013-10-30 | 2019-07-24 | KCI Licensing, Inc. | Condensate absorbing and dissipating system |
WO2015065616A1 (en) | 2013-10-30 | 2015-05-07 | Kci Licensing, Inc. | Dressing with sealing and retention intereface |
WO2015091697A1 (en) * | 2013-12-17 | 2015-06-25 | Birgit Riesinger | Wound care article having a material that has a high restoring force |
WO2015110410A1 (en) | 2014-01-21 | 2015-07-30 | Smith & Nephew Plc | Collapsible dressing for negative pressure wound treatment |
AU2015208298B2 (en) | 2014-01-21 | 2019-10-10 | Smith & Nephew Plc | Wound treatment apparatuses |
KR102304753B1 (en) | 2014-02-14 | 2021-09-23 | 아토믹 메디컬 이노베이션스, 인코포레이티드 | Systems and methods for tissue healing |
EP3848009A1 (en) | 2014-02-28 | 2021-07-14 | 3M Innovative Properties Company | Hybrid drape having a gel-coated perforated mesh |
US11026844B2 (en) | 2014-03-03 | 2021-06-08 | Kci Licensing, Inc. | Low profile flexible pressure transmission conduit |
DE202014002375U1 (en) | 2014-03-14 | 2014-04-17 | Norbert Neubauer | labyrinth drainage |
DE202014002888U1 (en) | 2014-04-03 | 2014-05-02 | Norbert Neubauer | Apparatus for wound suction |
US10226566B2 (en) | 2014-04-23 | 2019-03-12 | Genadyne Biotechnologies, Inc. | System and process for removing bodily fluids from a body opening |
US10406266B2 (en) | 2014-05-02 | 2019-09-10 | Kci Licensing, Inc. | Fluid storage devices, systems, and methods |
EP3263079B8 (en) | 2014-05-09 | 2020-12-30 | 3M Innovative Properties Company | Dressing with contracting layer for linear tissue sites |
US10898217B2 (en) | 2014-05-09 | 2021-01-26 | Kci Licensing, Inc. | Dressing providing apertures with multiple orifice sizes for negative-pressure therapy |
EP3139880B1 (en) * | 2014-05-09 | 2018-03-21 | KCI Licensing, Inc. | Disruptive dressing for use with negative pressure and fluid instillation |
CA2949167A1 (en) | 2014-05-16 | 2015-11-19 | Smith & Nephew Plc | Reduced pressure wound therapy kit and packaging |
USD758851S1 (en) | 2014-06-03 | 2016-06-14 | Smith & Nephew Plc | Packaging for a wound therapy system |
EP3281616B1 (en) | 2014-06-05 | 2020-01-01 | KCI Licensing, Inc. | Dressing with fluid acquisition and distribution characteristics |
US10610414B2 (en) | 2014-06-18 | 2020-04-07 | Smith & Nephew Plc | Wound dressing and method of treatment |
WO2016004090A1 (en) | 2014-06-30 | 2016-01-07 | össur hf | Prosthetic feet and foot covers |
JP6659540B2 (en) * | 2014-07-07 | 2020-03-04 | 株式会社村田製作所 | Negative pressure closure therapy device |
DE202014005546U1 (en) | 2014-07-08 | 2014-09-02 | Norbert Neubauer | Maze flat drain |
US11007082B2 (en) | 2014-07-23 | 2021-05-18 | Innovative Therapies Inc. | Foam laminate dressing |
EP3174569B1 (en) | 2014-07-31 | 2020-01-15 | Smith & Nephew, Inc | Systems and methods for applying reduced pressure therapy |
DE202014006781U1 (en) | 2014-08-20 | 2014-09-17 | Norbert Neubauer | Octopus drainage |
DE202014006979U1 (en) | 2014-08-26 | 2014-10-28 | Norbert Neubauer | Absorbent port for wound exudate, for drainage agents protruding from wounds and body cavities |
DE202014007400U1 (en) | 2014-09-11 | 2014-10-13 | Norbert Neubauer | Device for wound treatment with gas depot inserts |
DE202014007462U1 (en) | 2014-09-12 | 2014-10-22 | Norbert Neubauer | Device for wound drainage for wound secretions |
DE202014007518U1 (en) | 2014-09-16 | 2014-10-21 | Norbert Neubauer | Labyrinth drainage for the suction of wound secretions |
DE202014007624U1 (en) | 2014-09-19 | 2014-10-28 | Norbert Neubauer | Labyrinth drain for the suction of wound secretions |
EP3233001B1 (en) | 2014-12-17 | 2020-06-17 | KCI Licensing, Inc. | Dressing with offloading capability |
JP6725527B2 (en) | 2014-12-22 | 2020-07-22 | スミス アンド ネフュー ピーエルシーSmith & Nephew Public Limited Company | Device and method for negative pressure wound therapy |
DE202015000383U1 (en) | 2015-01-17 | 2015-02-12 | Norbert Neubauer | Drainage device for wound treatment |
CA2974361A1 (en) | 2015-01-20 | 2016-07-28 | Plurogen Therapeutics, Llc | Compositions and methods of treating microbes |
DE202015000910U1 (en) | 2015-02-04 | 2015-03-02 | Norbert Neubauer | Drainage device for wound treatment |
DE202015001600U1 (en) | 2015-02-28 | 2015-04-02 | Norbert Neubauer | Wound drainage and wound care |
KR101637976B1 (en) * | 2015-03-10 | 2016-07-08 | (주)시지바이오 | Method and apparatus for treating a wound |
AU2016254119A1 (en) | 2015-04-29 | 2017-10-05 | Smith & Nephew Inc. | Negative pressure wound closure device |
WO2016182977A1 (en) | 2015-05-08 | 2016-11-17 | Kci Licensing, Inc. | Low acuity dressing with integral pump |
US10076594B2 (en) | 2015-05-18 | 2018-09-18 | Smith & Nephew Plc | Fluidic connector for negative pressure wound therapy |
JP6995462B2 (en) * | 2015-05-29 | 2022-01-14 | 株式会社クラレ | Fiber sheet with excellent flexibility |
KR102487678B1 (en) | 2015-05-29 | 2023-01-11 | 주식회사 쿠라레 | Fiber sheet |
DE202015004965U1 (en) | 2015-07-10 | 2015-08-24 | Norbert Neubauer | Labyrinth foils drainage |
SG10201912031SA (en) * | 2015-07-27 | 2020-02-27 | Noleus Tech Inc | Apparatuses and methods for improving post-operative recovery from surgery |
US10583228B2 (en) | 2015-07-28 | 2020-03-10 | J&M Shuler Medical, Inc. | Sub-atmospheric wound therapy systems and methods |
EP3328458B1 (en) | 2015-07-29 | 2020-05-06 | Innovative Therapies Inc. | Wound therapy device pressure monitoring and control system |
DE202015005922U1 (en) | 2015-08-20 | 2015-09-24 | Norbert Neubauer | Anti-pressure drainage for suction of wound secretions |
EP3135304A1 (en) * | 2015-08-26 | 2017-03-01 | Mölnlycke Health Care AB | Foamed silicone in wound care |
DE202015006059U1 (en) | 2015-08-27 | 2015-09-24 | Norbert Neubauer | Softdrain for the suction of wound secretions |
WO2017040045A1 (en) * | 2015-09-01 | 2017-03-09 | Kci Licensing, Inc. | Dressing with increased apposition force |
EP3349807B1 (en) | 2015-09-17 | 2021-02-24 | 3M Innovative Properties Company | Hybrid silicone and acrylic adhesive cover for use with wound treatment |
DE202015006570U1 (en) * | 2015-09-17 | 2015-10-15 | Lohmann & Rauscher Gmbh | Wound care arrangement |
DE202015007032U1 (en) | 2015-10-08 | 2016-01-07 | Norbert Neubauer | Drain for suction of wound secretions |
KR101744708B1 (en) * | 2015-10-16 | 2017-06-09 | (주)시지바이오 | Connector for reduced pressure treatment and a reduced pressure treatment apparatus using the same |
EP3377013B1 (en) | 2015-11-20 | 2020-02-26 | KCI Licensing, Inc. | Medical system with flexible fluid storage bridge |
US10575991B2 (en) | 2015-12-15 | 2020-03-03 | University Of Massachusetts | Negative pressure wound closure devices and methods |
US10814049B2 (en) | 2015-12-15 | 2020-10-27 | University Of Massachusetts | Negative pressure wound closure devices and methods |
EP3397219B1 (en) | 2015-12-30 | 2020-10-21 | Smith & Nephew plc | Absorbent negative pressure wound therapy dressing |
CN108472160B (en) * | 2015-12-30 | 2022-02-22 | 史密夫及内修公开有限公司 | Negative pressure wound therapy apparatus |
DE202016000770U1 (en) | 2016-02-05 | 2016-03-17 | Norbert Neubauer | Balloon wound insert for suction of wound fluid |
WO2017136855A1 (en) * | 2016-02-07 | 2017-08-10 | Haupt Brett | Head-only and/or whole body inhalation exposure chamber |
JP6391607B2 (en) * | 2016-02-08 | 2018-09-19 | スミス アンド ネフュー ピーエルシーSmith & Nephew Public Limited Company | Blockage management |
JP1586115S (en) | 2016-02-29 | 2017-09-19 | ||
USD796735S1 (en) | 2016-02-29 | 2017-09-05 | Smith & Nephew Plc | Mount apparatus for portable negative pressure apparatus |
AU2017227923B2 (en) | 2016-03-04 | 2022-01-27 | Smith & Nephew Plc | Negative pressure wound therapy apparatus for post breast surgery wounds |
DE202016002031U1 (en) | 2016-03-29 | 2016-05-10 | Norbert Neubauer | Positive pressure and negative pressure wound treatment device |
MX2018011801A (en) | 2016-03-30 | 2019-12-16 | Convatec Technologies Inc | Detecting microbial infections in wounds. |
AU2017243601A1 (en) | 2016-03-30 | 2018-11-22 | Acib Gmbh | Detecting microbial infection in wounds |
DE202016002928U1 (en) | 2016-05-04 | 2016-06-08 | Norbert Neubauer | Wound Drainage wound covering |
DE202016003673U1 (en) | 2016-06-10 | 2016-07-13 | Norbert Neubauer | Cuff for wound treatment |
US11452808B2 (en) | 2016-07-08 | 2022-09-27 | Convatec Technologies Inc. | Fluid flow sensing |
KR20190026858A (en) | 2016-07-08 | 2019-03-13 | 컨바텍 테크놀러지스 인크 | Flexible negative pressure system |
US11266774B2 (en) | 2016-07-08 | 2022-03-08 | Convatec Technologies Inc. | Fluid collection apparatus |
US20170173230A1 (en) * | 2016-08-15 | 2017-06-22 | Shree Devi Visaria | Wound therapy |
JP7038701B2 (en) * | 2016-08-30 | 2022-03-18 | スミス アンド ネフュー ピーエルシー | System for applying decompression therapy |
US20190201250A1 (en) * | 2016-08-30 | 2019-07-04 | Smith & Nephew, Inc. | Negative pressure wound closure device |
USD988519S1 (en) * | 2016-09-12 | 2023-06-06 | Nyxoah S.A. | Patch |
WO2018060144A1 (en) | 2016-09-27 | 2018-04-05 | Smith & Nephew Plc | Wound closure devices with dissolvable portions |
DE202016006607U1 (en) | 2016-10-26 | 2016-11-30 | Norbert Neubauer | Vacuum bag for wound drainage |
GB2555584B (en) | 2016-10-28 | 2020-05-27 | Smith & Nephew | Multi-layered wound dressing and method of manufacture |
CA3042673A1 (en) | 2016-11-02 | 2018-05-11 | Smith & Nephew Inc. | Wound closure devices |
EP3551147B1 (en) | 2016-12-12 | 2023-08-09 | Smith & Nephew PLC | Wound dressing |
US11446174B2 (en) * | 2016-12-19 | 2022-09-20 | Purewick Corporation | Micro-climate-managed skin care, including wound care |
CN106726146A (en) * | 2017-01-18 | 2017-05-31 | 柴家科 | For the negative pressure wound surface therapeutic system of Wound treating |
DE202017000638U1 (en) | 2017-02-06 | 2017-03-31 | Norbert Neubauer | Vacuum bag in the low-vacuum system for wound drainage |
RU174957U1 (en) * | 2017-02-20 | 2017-11-13 | Алексей Алексеевич Барадулин | Device for vacuum drainage of wounds using alternating negative pressure |
US11491265B2 (en) | 2017-02-22 | 2022-11-08 | Cornell University | Mechanical vacuum dressing for mechanically managing, protecting and suctioning small incisional wounds |
US11707623B2 (en) | 2017-02-28 | 2023-07-25 | Nyxoah S.A. | Surgical implant system |
JP7134991B2 (en) * | 2017-03-09 | 2022-09-12 | セクレタリー・デパートメント・オブ・バイオテクノロジー | Wound dressings for systems that combine negative pressure and fluid delivery |
DE202017001767U1 (en) | 2017-04-03 | 2017-05-16 | Norbert Neubauer | Flat drain port |
DE202017002761U1 (en) | 2017-05-24 | 2017-07-21 | Norbert Neubauer | Suction device for body fluids and wound secretions |
DE202017002952U1 (en) | 2017-06-02 | 2017-07-20 | Norbert Neubauer | Low-vacuum system for wound drainage and irrigation |
JP2020523078A (en) * | 2017-06-07 | 2020-08-06 | ケーシーアイ ライセンシング インコーポレイテッド | Composite dressing for promoting granulation and reducing maceration by negative pressure treatment |
CA3061353A1 (en) * | 2017-06-07 | 2018-12-13 | Kci Licensing, Inc. | Peel and place dressing for thick exudate and instillation |
BR112019025029A2 (en) * | 2017-06-07 | 2020-06-23 | Kci Licensing, Inc | I THINK TO TREAT A FABRIC SITE WITH NEGATIVE PRESSURE; AND SYSTEMS, APPLIANCES AND METHODS |
CN110868969B (en) | 2017-06-07 | 2022-01-11 | 3M创新知识产权公司 | Composite dressing for improving granulation growth and reducing maceration by negative pressure therapy |
US11471332B2 (en) | 2017-06-07 | 2022-10-18 | Kci Licensing, Inc. | Systems, apparatuses, and methods for negative-pressure treatment with reduced tissue in-growth |
US11207217B2 (en) | 2017-06-07 | 2021-12-28 | Kci Licensing, Inc. | Methods for manufacturing and assembling dual material tissue interface for negative-pressure therapy |
US11179512B2 (en) | 2017-06-07 | 2021-11-23 | Kci Licensing, Inc. | Multi-layer wound filler for extended wear time |
CA3060591A1 (en) * | 2017-06-07 | 2018-12-13 | Kci Licensing, Inc. | Composite dressings for improved granulation and reduced maceration with negative-pressure treatment |
US10695227B2 (en) | 2017-06-07 | 2020-06-30 | Kci Licensing, Inc. | Methods for manufacturing and assembling dual material tissue interface for negative-pressure therapy |
WO2018226624A1 (en) * | 2017-06-07 | 2018-12-13 | Kci Licensing, Inc. | Composite dressings for improved granulation and reduced maceration with negative-pressure treatment |
AU2018285236B2 (en) | 2017-06-13 | 2024-02-29 | Smith & Nephew Plc | Wound closure device and method of use |
EP3638169A1 (en) | 2017-06-13 | 2020-04-22 | Smith & Nephew PLC | Collapsible structure and method of use |
US11395873B2 (en) | 2017-06-14 | 2022-07-26 | Smith & Nephew, Inc. | Control of wound closure and fluid removal management in wound therapy |
US11583623B2 (en) | 2017-06-14 | 2023-02-21 | Smith & Nephew Plc | Collapsible structure for wound closure and method of use |
WO2018229012A1 (en) | 2017-06-14 | 2018-12-20 | Smith & Nephew Plc | Collapsible sheet for wound closure and method of use |
JP7155162B2 (en) * | 2017-06-14 | 2022-10-18 | ティージェイ スミス アンド ネフュー リミテッド | Negative pressure wound therapy unit |
JP2020523052A (en) | 2017-06-14 | 2020-08-06 | スミス アンド ネフュー インコーポレイテッド | Fluid removal management and control of wound closure in wound care |
AU2018293063B2 (en) | 2017-06-30 | 2024-03-07 | T.J.Smith & Nephew,Limited | Negative pressure wound therapy apparatus |
FR3068595B1 (en) * | 2017-07-10 | 2023-01-27 | Gilles Touati | SUCTION DEVICE ADAPTED TO BE PLACED OVER A WOUND AND/OR INCISION |
US11607344B2 (en) | 2017-07-27 | 2023-03-21 | Smith & Nephew Plc | Customizable wound closure device and method of use |
US11559622B2 (en) * | 2017-07-29 | 2023-01-24 | Edward D. Lin | Deformation resistant wound therapy apparatus and related methods of use |
US11712373B2 (en) | 2017-07-29 | 2023-08-01 | Edward D. Lin | Wound therapy apparatus with scar modulation properties and related methods |
US10780201B2 (en) | 2017-07-29 | 2020-09-22 | Edward D. Lin | Control apparatus and related methods for wound therapy delivery |
US10729826B2 (en) | 2017-07-29 | 2020-08-04 | Edward D. Lin | Wound cover apparatus and related methods of use |
US11285048B2 (en) * | 2017-08-02 | 2022-03-29 | Kci Licensing, Inc. | Multi-layer compartment dressing and negative-pressure treatment method |
WO2019030136A1 (en) | 2017-08-07 | 2019-02-14 | Smith & Nephew Plc | Wound closure device with protective layer and method of use |
WO2019042790A1 (en) | 2017-08-29 | 2019-03-07 | Smith & Nephew Plc | Systems and methods for monitoring wound closure |
DE202017004652U1 (en) | 2017-09-06 | 2017-09-28 | Heidrun Neubauer | Wundpflaster |
US20200282114A1 (en) * | 2017-09-18 | 2020-09-10 | Kci Licensing, Inc. | Wound dressings and systems with remote oxygen generation for topical wound therapy and related methods |
GB201718014D0 (en) | 2017-11-01 | 2017-12-13 | Smith & Nephew | Dressing for negative pressure wound therapy with filter |
WO2019094502A1 (en) | 2017-11-07 | 2019-05-16 | Prescient Surgical, Inc. | Methods and apparatus for prevention of surgical site infection |
JP7424638B2 (en) | 2017-12-06 | 2024-01-30 | コーネル ユニヴァーシティー | Manually operated negative pressure wound therapy (NPWT) bandage with improved pump efficiency, automatic pressure indicator and automatic pressure limiter |
WO2019136164A1 (en) * | 2018-01-04 | 2019-07-11 | Kci Licensing, Inc. | Peel and place dressing for thick exudate and instillation |
JP7348901B2 (en) * | 2018-01-04 | 2023-09-21 | スリーエム イノベイティブ プロパティズ カンパニー | Peel-and-stick dressing for thick exudates and drips |
WO2019139823A2 (en) * | 2018-01-10 | 2019-07-18 | Kci Licensing, Inc. | Wound dressings and systems with therapeutic gas and negative pressure sources for incision management and related methods |
CN108272555A (en) * | 2018-01-19 | 2018-07-13 | 全椒光太胶粘制品有限公司 | A kind of high hermetic type Medical isolating film |
RU183866U1 (en) * | 2018-04-03 | 2018-10-05 | федеральное государственное бюджетное образовательное учреждение высшего образования "Ульяновский государственный университет" | DEVICE FOR VACUUM DRAINING OF THE RAS |
DE202018001746U1 (en) | 2018-04-05 | 2018-05-16 | Norbert Neubauer | Anti bruises pulse drain |
USD915596S1 (en) | 2018-04-10 | 2021-04-06 | Össur Iceland Ehf | Prosthetic foot with tapered fasteners |
US20210379273A1 (en) * | 2018-04-10 | 2021-12-09 | Kci Licensing, Inc. | Bridge dressing with fluid management |
DE202018002009U1 (en) | 2018-04-19 | 2018-05-24 | Norbert Neubauer | Anti-pressure points - Spüldrain |
EP3801416A1 (en) * | 2018-05-25 | 2021-04-14 | KCI Licensing, Inc. | Method and system for providing active tissue site debridement |
DE202018002597U1 (en) | 2018-05-30 | 2018-06-25 | Norbert Neubauer | wound dressing |
GB201811449D0 (en) | 2018-07-12 | 2018-08-29 | Smith & Nephew | Apparatuses and methods for negative pressure wound therapy |
JP2021531899A (en) * | 2018-08-01 | 2021-11-25 | ケーシーアイ ライセンシング インコーポレイテッド | Soft tissue treatment using negative pressure |
US20220111138A1 (en) * | 2018-09-12 | 2022-04-14 | Kci Licensing, Inc. | Systems, apparatuses, and methods for negative-pressure treatment with reduced tissue in-growth |
DE102018007692A1 (en) * | 2018-09-30 | 2020-04-02 | Alexander Folwarzny | Wound dressing |
WO2020081259A1 (en) * | 2018-10-17 | 2020-04-23 | Kci Licensing, Inc. | Systems, apparatuses, and methods for negative-pressure treatment with reduce tissue in-growth |
EP3866737A1 (en) * | 2018-10-17 | 2021-08-25 | KCI Licensing, Inc. | Peel and place dressing having a closed-cell contact layer |
DE202018005558U1 (en) | 2018-11-30 | 2019-01-03 | Norbert Neubauer | Drainage drain output patch |
DE202018005662U1 (en) | 2018-12-06 | 2019-02-15 | Norbert Neubauer | Sore - healing drainage |
EP3893825A1 (en) | 2018-12-13 | 2021-10-20 | University of Massachusetts | Negative pressure wound closure devices and methods |
TWM578166U (en) * | 2019-02-01 | 2019-05-21 | 嬌朋生技股份有限公司 | Negative pressure wound dressing |
DE202019000759U1 (en) | 2019-02-14 | 2019-03-21 | Norbert Neubauer | wound dressing |
DE202019101382U1 (en) * | 2019-03-12 | 2020-06-15 | Lohmann & Rauscher Gmbh | Vacuum treatment arrangement |
DE202019001384U1 (en) | 2019-03-26 | 2019-04-17 | Norbert Neubauer | care edition |
CN109938920B (en) * | 2019-04-29 | 2024-02-20 | 振德医疗用品股份有限公司 | Micro negative pressure foam dressing and manufacturing method thereof |
WO2020229951A1 (en) * | 2019-05-13 | 2020-11-19 | Kci Licensing, Inc. | Dressing including outlet connection fluid buffer |
DE202019002255U1 (en) | 2019-05-23 | 2019-06-13 | Norbert Neubauer | Inzisionsdrainage cooling patch |
WO2020242879A1 (en) * | 2019-05-24 | 2020-12-03 | Kci Licensing, Inc. | Perforated collagen wound interface for use with negative pressure wound therapy |
DE202019002346U1 (en) | 2019-05-28 | 2019-07-09 | Norbert Neubauer | wound collar |
JP2022536285A (en) * | 2019-06-12 | 2022-08-15 | ケーシーアイ ライセンシング インコーポレイテッド | Composite dressing for tissue closure using negative pressure |
US20220395400A1 (en) * | 2019-06-28 | 2022-12-15 | Kci Licensing, Inc. | Dressings With Polymer Delivery |
EP3993747A1 (en) * | 2019-07-03 | 2022-05-11 | KCI Licensing, Inc. | Customizable dressings for negative-pressure treatment of large areas |
EP3999007A4 (en) * | 2019-07-17 | 2023-08-02 | Aatru Medical, LLC | Negative pressure device for articulating joint |
EP4003254A1 (en) * | 2019-07-24 | 2022-06-01 | KCI Licensing, Inc. | System for treating a tissue site |
DE202019003243U1 (en) | 2019-08-02 | 2019-08-26 | Norbert Neubauer | Optic patches |
DE202019003393U1 (en) | 2019-08-13 | 2019-09-03 | Norbert Neubauer | Maze drainage |
US20220313493A1 (en) * | 2019-09-24 | 2022-10-06 | Kci Licensing, Inc. | Wound Dressing Construct With High Wicking Adhesive Border |
DE202019003989U1 (en) | 2019-09-27 | 2019-11-07 | Norbert Neubauer | labyrinth drainage |
US20210106737A1 (en) | 2019-10-11 | 2021-04-15 | Andrew Thomas Obst | Open wound negative pressure wound therapy protection system |
WO2021111369A1 (en) * | 2019-12-04 | 2021-06-10 | Kci Licensing, Inc. | Tissue interface for negative pressure and instillation therapy |
US11771819B2 (en) | 2019-12-27 | 2023-10-03 | Convatec Limited | Low profile filter devices suitable for use in negative pressure wound therapy systems |
US11331221B2 (en) | 2019-12-27 | 2022-05-17 | Convatec Limited | Negative pressure wound dressing |
CN113101056A (en) * | 2020-01-09 | 2021-07-13 | 林劲纬 | Absorber forming machine, forming method thereof and absorber |
US11160917B2 (en) | 2020-01-22 | 2021-11-02 | J&M Shuler Medical Inc. | Negative pressure wound therapy barrier |
WO2022218777A1 (en) * | 2021-04-14 | 2022-10-20 | Medela Holding Ag | Wound treatment system and wound treatment kit |
DE202021002664U1 (en) | 2021-08-13 | 2021-10-18 | Norbert Neubauer | Wound cover with viewing window |
CN114748774A (en) * | 2022-03-04 | 2022-07-15 | 尹乔虎 | Belly conditioning device for digestive system department |
DE102022120423A1 (en) | 2022-08-12 | 2024-02-15 | Lohmann & Rauscher Gmbh | Method for producing drainage films, tubular drainage film and wound care kit |
Family Cites Families (241)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US549584A (en) | 1895-11-12 | Wparsobs | ||
US779945A (en) * | 1904-02-17 | 1905-01-10 | Max E Lehmann | Cotton-picker. |
US1355846A (en) * | 1920-02-06 | 1920-10-19 | David A Rannells | Medical appliance |
US1785831A (en) * | 1928-03-22 | 1930-12-23 | Marjorie C Edmundson | Surgical bandage |
US2547758A (en) * | 1949-01-05 | 1951-04-03 | Wilmer B Keeling | Instrument for treating the male urethra |
US2632443A (en) * | 1949-04-18 | 1953-03-24 | Eleanor P Lesher | Surgical dressing |
GB692578A (en) | 1949-09-13 | 1953-06-10 | Minnesota Mining & Mfg | Improvements in or relating to drape sheets for surgical use |
US2682873A (en) * | 1952-07-30 | 1954-07-06 | Johnson & Johnson | General purpose protective dressing |
NL189176B (en) | 1956-07-13 | 1900-01-01 | Hisamitsu Pharmaceutical Co | PLASTER BASED ON A SYNTHETIC RUBBER. |
US2969057A (en) * | 1957-11-04 | 1961-01-24 | Brady Co W H | Nematodic swab |
US3066672A (en) | 1960-09-27 | 1962-12-04 | Jr William H Crosby | Method and apparatus for serial sampling of intestinal juice |
US3337332A (en) * | 1964-07-23 | 1967-08-22 | Dow Chemical Co | Aluminum alloys and galvanic anodes made therefrom |
US3367332A (en) * | 1965-08-27 | 1968-02-06 | Gen Electric | Product and process for establishing a sterile area of skin |
US3380238A (en) * | 1966-09-29 | 1968-04-30 | Toyoda Automatic Loom Works | Fly frame |
US3520300A (en) * | 1967-03-15 | 1970-07-14 | Amp Inc | Surgical sponge and suction device |
US3568675A (en) * | 1968-08-30 | 1971-03-09 | Clyde B Harvey | Fistula and penetrating wound dressing |
US3556101A (en) * | 1969-02-07 | 1971-01-19 | Hollister Inc | Surgical suction assembly |
US3682180A (en) * | 1970-06-08 | 1972-08-08 | Coilform Co Inc | Drain clip for surgical drain |
BE789293Q (en) * | 1970-12-07 | 1973-01-15 | Parke Davis & Co | MEDICO-SURGICAL DRESSING FOR BURNS AND SIMILAR LESIONS |
US3830238A (en) | 1972-11-07 | 1974-08-20 | Deknatel Inc | Surgical drainage system with pressure measuring device |
US3826254A (en) * | 1973-02-26 | 1974-07-30 | Verco Ind | Needle or catheter retaining appliance |
JPS52102091A (en) * | 1976-02-24 | 1977-08-26 | Nissan Motor | Protection hood for oxygen concentration detector |
DE2527706A1 (en) * | 1975-06-21 | 1976-12-30 | Hanfried Dr Med Weigand | DEVICE FOR THE INTRODUCTION OF CONTRAST AGENTS INTO AN ARTIFICIAL INTESTINAL OUTLET |
DE2640413C3 (en) | 1976-09-08 | 1980-03-27 | Richard Wolf Gmbh, 7134 Knittlingen | Catheter monitor |
NL7710909A (en) * | 1976-10-08 | 1978-04-11 | Smith & Nephew | COMPOSITE STRAPS. |
GB1562244A (en) * | 1976-11-11 | 1980-03-05 | Lock P M | Wound dressing materials |
US4080970A (en) * | 1976-11-17 | 1978-03-28 | Miller Thomas J | Post-operative combination dressing and internal drain tube with external shield and tube connector |
US4139004A (en) * | 1977-02-17 | 1979-02-13 | Gonzalez Jr Harry | Bandage apparatus for treating burns |
US4184510A (en) * | 1977-03-15 | 1980-01-22 | Fibra-Sonics, Inc. | Valued device for controlling vacuum in surgery |
US4294240A (en) * | 1977-07-14 | 1981-10-13 | Minnesota Mining And Manufacturing Company | Perforated closed cell padding material |
US4165748A (en) * | 1977-11-07 | 1979-08-28 | Johnson Melissa C | Catheter tube holder |
DE2754775C3 (en) | 1977-12-08 | 1981-12-17 | Hilber, Contz, Dr.med., 8000 München | Abdominal cavity irrigation device |
US4256109A (en) * | 1978-07-10 | 1981-03-17 | Nichols Robert L | Shut off valve for medical suction apparatus |
US4224941A (en) * | 1978-11-15 | 1980-09-30 | Stivala Oscar G | Hyperbaric treatment apparatus |
SE414994B (en) * | 1978-11-28 | 1980-09-01 | Landstingens Inkopscentral | VENKATETERFORBAND |
WO1980001139A1 (en) * | 1978-12-06 | 1980-06-12 | Svedman Paul | Device for treating tissues,for example skin |
US4250882A (en) * | 1979-01-26 | 1981-02-17 | Medical Dynamics, Inc. | Wound drainage device |
US4266545A (en) | 1979-04-06 | 1981-05-12 | Moss James P | Portable suction device for collecting fluids from a closed wound |
US4284079A (en) | 1979-06-28 | 1981-08-18 | Adair Edwin Lloyd | Method for applying a male incontinence device |
GB2058227B (en) | 1979-07-19 | 1983-07-06 | Matburn Holdings Ltd | Bung assemblies for use with vacuum apparatus |
US4261363A (en) * | 1979-11-09 | 1981-04-14 | C. R. Bard, Inc. | Retention clips for body fluid drains |
US4430084A (en) * | 1980-01-21 | 1984-02-07 | American Hospital Supply Corp. | Method for pre-use storage of a medical receptacle |
US4569348A (en) * | 1980-02-22 | 1986-02-11 | Velcro Usa Inc. | Catheter tube holder strap |
EP0035583B1 (en) * | 1980-03-11 | 1985-08-14 | Schmid, Eduard, Dr.Dr.med. | Skin graft pressure bandage |
US4297995A (en) * | 1980-06-03 | 1981-11-03 | Key Pharmaceuticals, Inc. | Bandage containing attachment post |
US4333468A (en) * | 1980-08-18 | 1982-06-08 | Geist Robert W | Mesentery tube holder apparatus |
US4346711A (en) | 1981-01-16 | 1982-08-31 | Sherwood Medical Industries Inc. | Body fluid collection device with disposable liner |
US4465485A (en) | 1981-03-06 | 1984-08-14 | Becton, Dickinson And Company | Suction canister with unitary shut-off valve and filter features |
US4392853A (en) * | 1981-03-16 | 1983-07-12 | Rudolph Muto | Sterile assembly for protecting and fastening an indwelling device |
US4373519A (en) * | 1981-06-26 | 1983-02-15 | Minnesota Mining And Manufacturing Company | Composite wound dressing |
US4392858A (en) * | 1981-07-16 | 1983-07-12 | Sherwood Medical Company | Wound drainage device |
US4419097A (en) * | 1981-07-31 | 1983-12-06 | Rexar Industries, Inc. | Attachment for catheter tube |
AU550575B2 (en) | 1981-08-07 | 1986-03-27 | Richard Christian Wright | Wound drainage device |
SE429197B (en) * | 1981-10-14 | 1983-08-22 | Frese Nielsen | SAR TREATMENT DEVICE |
DE3146266A1 (en) * | 1981-11-21 | 1983-06-01 | B. Braun Melsungen Ag, 3508 Melsungen | COMBINED DEVICE FOR A MEDICAL SUCTION DRAINAGE |
US4551139A (en) * | 1982-02-08 | 1985-11-05 | Marion Laboratories, Inc. | Method and apparatus for burn wound treatment |
US4728642A (en) * | 1982-04-22 | 1988-03-01 | E. R. Squibb & Sons, Inc. | Method of treating wounds with granules and dressing |
US4475909A (en) * | 1982-05-06 | 1984-10-09 | Eisenberg Melvin I | Male urinary device and method for applying the device |
EP0100148B1 (en) | 1982-07-06 | 1986-01-08 | Dow Corning Limited | Medical-surgical dressing and a process for the production thereof |
SU1232251A1 (en) * | 1983-01-12 | 1986-05-23 | Научно-производственное объединение "Мединструмент" | Bandage |
NZ206837A (en) | 1983-01-27 | 1986-08-08 | Johnson & Johnson Prod Inc | Thin film adhesive dressing:backing material in three sections |
DE3321151C2 (en) * | 1983-06-11 | 1986-09-18 | Walter Küsnacht Beck | Device for aspirating secretions |
US4548202A (en) | 1983-06-20 | 1985-10-22 | Ethicon, Inc. | Mesh tissue fasteners |
US4540412A (en) * | 1983-07-14 | 1985-09-10 | The Kendall Company | Device for moist heat therapy |
US4543100A (en) * | 1983-11-01 | 1985-09-24 | Brodsky Stuart A | Catheter and drain tube retainer |
US4525374A (en) * | 1984-02-27 | 1985-06-25 | Manresa, Inc. | Treating hydrophobic filters to render them hydrophilic |
GB2157958A (en) | 1984-05-03 | 1985-11-06 | Ernest Edward Austen Bedding | Ball game net support |
US4897081A (en) * | 1984-05-25 | 1990-01-30 | Thermedics Inc. | Percutaneous access device |
US4633865A (en) * | 1984-07-19 | 1987-01-06 | Rewoplan Medizin-Technische Einrichtungsgesellschaft Mbh | Device for performing examinations and interventions in the abdominal cavity of a patient |
US5215522A (en) * | 1984-07-23 | 1993-06-01 | Ballard Medical Products | Single use medical aspirating device and method |
GB8419745D0 (en) * | 1984-08-02 | 1984-09-05 | Smith & Nephew Ass | Wound dressing |
US4872450A (en) * | 1984-08-17 | 1989-10-10 | Austad Eric D | Wound dressing and method of forming same |
US4655754A (en) * | 1984-11-09 | 1987-04-07 | Stryker Corporation | Vacuum wound drainage system and lipids baffle therefor |
US4826494A (en) * | 1984-11-09 | 1989-05-02 | Stryker Corporation | Vacuum wound drainage system |
US4605399A (en) * | 1984-12-04 | 1986-08-12 | Complex, Inc. | Transdermal infusion device |
US5037397A (en) * | 1985-05-03 | 1991-08-06 | Medical Distributors, Inc. | Universal clamp |
GB8520999D0 (en) | 1985-08-22 | 1985-09-25 | Clinical Product Dev Ltd | Wound closure device |
US4640688A (en) * | 1985-08-23 | 1987-02-03 | Mentor Corporation | Urine collection catheter |
US4710165A (en) * | 1985-09-16 | 1987-12-01 | Mcneil Charles B | Wearable, variable rate suction/collection device |
US4758220A (en) * | 1985-09-26 | 1988-07-19 | Alcon Laboratories, Inc. | Surgical cassette proximity sensing and latching apparatus |
US4908350A (en) * | 1985-10-31 | 1990-03-13 | The Regents Of The University Of California | Hyperosmotic/hyperoncotic solutions for resuscitation of hypodynamic shock |
US4844072A (en) * | 1985-12-27 | 1989-07-04 | Seabrook Medical Systems, Inc. | Liquid-circulating thermal therapy system |
US4733659A (en) * | 1986-01-17 | 1988-03-29 | Seton Company | Foam bandage |
EP0256060A1 (en) | 1986-01-31 | 1988-02-24 | OSMOND, Roger L. W. | Suction system for wound and gastro-intestinal drainage |
US4838883A (en) * | 1986-03-07 | 1989-06-13 | Nissho Corporation | Urine-collecting device |
JPS62281965A (en) * | 1986-05-29 | 1987-12-07 | テルモ株式会社 | Catheter and catheter fixing member |
GB8621884D0 (en) * | 1986-09-11 | 1986-10-15 | Bard Ltd | Catheter applicator |
US5183664A (en) * | 1986-09-20 | 1993-02-02 | Smith And Nephew Associated Companies P.L.C. | Thin film adhesive dressings preparation and use |
GB2195255B (en) | 1986-09-30 | 1991-05-01 | Vacutec Uk Limited | Apparatus for vacuum treatment of an epidermal surface |
US4743232A (en) * | 1986-10-06 | 1988-05-10 | The Clinipad Corporation | Package assembly for plastic film bandage |
DE3634569A1 (en) * | 1986-10-10 | 1988-04-21 | Sachse Hans E | CONDOM CATHETER, A URINE TUBE CATHETER FOR PREVENTING RISING INFECTIONS |
JPS63135179A (en) * | 1986-11-26 | 1988-06-07 | 立花 俊郎 | Subcataneous drug administration set |
GB8628564D0 (en) | 1986-11-28 | 1987-01-07 | Smiths Industries Plc | Anti-foaming agent suction apparatus |
US4815468A (en) * | 1987-01-09 | 1989-03-28 | Annand David S | Sutureless closure |
GB8706116D0 (en) * | 1987-03-14 | 1987-04-15 | Smith & Nephew Ass | Adhesive dressings |
US4787888A (en) * | 1987-06-01 | 1988-11-29 | University Of Connecticut | Disposable piezoelectric polymer bandage for percutaneous delivery of drugs and method for such percutaneous delivery (a) |
US4863449A (en) * | 1987-07-06 | 1989-09-05 | Hollister Incorporated | Adhesive-lined elastic condom cathether |
US4825866A (en) * | 1987-08-27 | 1989-05-02 | Robert Pierce | Wound closure device |
US5176663A (en) * | 1987-12-02 | 1993-01-05 | Pal Svedman | Dressing having pad with compressibility limiting elements |
US4826949A (en) * | 1987-12-22 | 1989-05-02 | Basf Corporation | High shrinkage polyester fibers and method of preparation |
US4906240A (en) * | 1988-02-01 | 1990-03-06 | Matrix Medica, Inc. | Adhesive-faced porous absorbent sheet and method of making same |
JPH0733021Y2 (en) * | 1988-02-16 | 1995-07-31 | 臼井国際産業株式会社 | Centralized fixing structure for piping by clamp body |
US4985019A (en) * | 1988-03-11 | 1991-01-15 | Michelson Gary K | X-ray marker |
GB8812803D0 (en) | 1988-05-28 | 1988-06-29 | Smiths Industries Plc | Medico-surgical containers |
US4919654A (en) * | 1988-08-03 | 1990-04-24 | Kalt Medical Corporation | IV clamp with membrane |
US5000741A (en) | 1988-08-22 | 1991-03-19 | Kalt Medical Corporation | Transparent tracheostomy tube dressing |
US5059596A (en) * | 1989-01-16 | 1991-10-22 | Roussel Uclaf | Azabicyclo compounds |
GB8906100D0 (en) | 1989-03-16 | 1989-04-26 | Smith & Nephew | Laminates |
US5100396A (en) * | 1989-04-03 | 1992-03-31 | Zamierowski David S | Fluidic connection system and method |
US5527293A (en) * | 1989-04-03 | 1996-06-18 | Kinetic Concepts, Inc. | Fastening system and method |
US4969880A (en) * | 1989-04-03 | 1990-11-13 | Zamierowski David S | Wound dressing and treatment method |
US5261893A (en) * | 1989-04-03 | 1993-11-16 | Zamierowski David S | Fastening system and method |
US5358494A (en) * | 1989-07-11 | 1994-10-25 | Svedman Paul | Irrigation dressing |
JP2719671B2 (en) * | 1989-07-11 | 1998-02-25 | 日本ゼオン株式会社 | Wound dressing |
US5232453A (en) * | 1989-07-14 | 1993-08-03 | E. R. Squibb & Sons, Inc. | Catheter holder |
JP2721550B2 (en) * | 1989-07-21 | 1998-03-04 | 株式会社クラレ | Method for producing fused ring-containing compound |
GB2235877A (en) | 1989-09-18 | 1991-03-20 | Antonio Talluri | Closed wound suction apparatus |
US5014389A (en) | 1989-11-15 | 1991-05-14 | Concept Inc. | Foot manipulated suction head and method for employing same |
US5134994A (en) * | 1990-02-12 | 1992-08-04 | Say Sam L | Field aspirator in a soft pack with externally mounted container |
DD292373A (en) | 1990-03-07 | 1991-08-01 | ||
US5092858A (en) * | 1990-03-20 | 1992-03-03 | Becton, Dickinson And Company | Liquid gelling agent distributor device |
DE4012232A1 (en) * | 1990-04-14 | 1991-10-17 | Franz Josef Gross | Dressing for deep wounds - has main sheet applied to skin with centre hole over wound, fed and drainage tubes with perforated ends at wound, and overall cover film |
DE4034705A1 (en) | 1990-10-31 | 1992-05-07 | Martin Neumann | WOUND CLOSURE |
US5149331A (en) * | 1991-05-03 | 1992-09-22 | Ariel Ferdman | Method and device for wound closure |
US5248507A (en) | 1991-05-31 | 1993-09-28 | Board Of Regents, The University Of Texas System | Hypertonic isochloremic formulation for circulatory shock |
US5259835A (en) * | 1991-08-29 | 1993-11-09 | Tri-Point Medical L.P. | Wound closure means and method using flowable adhesive |
US5278100A (en) * | 1991-11-08 | 1994-01-11 | Micron Technology, Inc. | Chemical vapor deposition technique for depositing titanium silicide on semiconductor wafers |
US5645081A (en) * | 1991-11-14 | 1997-07-08 | Wake Forest University | Method of treating tissue damage and apparatus for same |
US5636643A (en) * | 1991-11-14 | 1997-06-10 | Wake Forest University | Wound treatment employing reduced pressure |
US5279550A (en) * | 1991-12-19 | 1994-01-18 | Gish Biomedical, Inc. | Orthopedic autotransfusion system |
US5192266A (en) * | 1992-02-18 | 1993-03-09 | Wilk Peter J | Device and related method for reducing swelling of hemorrhoidal tissues |
US5484399A (en) * | 1992-02-27 | 1996-01-16 | Sloan-Kettering Institute For Cancer Research | Process and device to reduce interstitial fluid pressure in tissue |
ES2131110T3 (en) * | 1992-03-23 | 1999-07-16 | Bard Inc C R | FLUID COLLECTION CONTAINER. |
US5167613A (en) * | 1992-03-23 | 1992-12-01 | The Kendall Company | Composite vented wound dressing |
FR2690617B1 (en) * | 1992-04-29 | 1994-06-24 | Cbh Textile | TRANSPARENT ADHESIVE DRESSING. |
SE9202098L (en) * | 1992-07-07 | 1994-01-17 | Saab Automobile | Device and method for correcting the amount of fuel supplied to Otto engines |
DE4306478A1 (en) | 1993-03-02 | 1994-09-08 | Wolfgang Dr Wagner | Drainage device, in particular pleural drainage device, and drainage method |
US5637103A (en) * | 1993-03-17 | 1997-06-10 | Kerwin; Michael J. | Fluid collection and disposal system |
US5681579A (en) * | 1993-03-22 | 1997-10-28 | E.R. Squibb & Sons, Inc. | Polymeric support wound dressing |
GB9307312D0 (en) * | 1993-04-07 | 1993-06-02 | United Surgical Services Ltd | Surgical wound dressings |
US5342376A (en) | 1993-05-03 | 1994-08-30 | Dermagraphics, Inc. | Inserting device for a barbed tissue connector |
US6241747B1 (en) * | 1993-05-03 | 2001-06-05 | Quill Medical, Inc. | Barbed Bodily tissue connector |
US5344415A (en) * | 1993-06-15 | 1994-09-06 | Deroyal Industries, Inc. | Sterile system for dressing vascular access site |
US5437651A (en) * | 1993-09-01 | 1995-08-01 | Research Medical, Inc. | Medical suction apparatus |
US5466231A (en) * | 1993-11-04 | 1995-11-14 | Merocel Corporation | Laminated sponge device |
US5549584A (en) * | 1994-02-14 | 1996-08-27 | The Kendall Company | Apparatus for removing fluid from a wound |
US5701917A (en) | 1994-03-30 | 1997-12-30 | Khouri Biomedical Research, Inc. | Method and apparatus for promoting soft tissue enlargement and wound healing |
GB9409281D0 (en) * | 1994-05-10 | 1994-06-29 | Svedman Paul | Transdermal device |
US5441481A (en) | 1994-05-27 | 1995-08-15 | Mishra; Pravin | Microdialysis probes and methods of use |
US5556375A (en) * | 1994-06-16 | 1996-09-17 | Hercules Incorporated | Wound dressing having a fenestrated base layer |
US5607388A (en) * | 1994-06-16 | 1997-03-04 | Hercules Incorporated | Multi-purpose wound dressing |
US5664270A (en) * | 1994-07-19 | 1997-09-09 | Kinetic Concepts, Inc. | Patient interface system |
EP0777504B1 (en) | 1994-08-22 | 1998-10-21 | Kinetic Concepts, Inc. | Wound drainage equipment |
DE29504378U1 (en) | 1995-03-15 | 1995-09-14 | Mtg Medizinisch Tech Geraeteba | Electronically controlled low-vacuum pump for chest and wound drainage |
US5646081A (en) * | 1995-04-12 | 1997-07-08 | Murata Manufacturing Co., Ltd. | Non-reduced dielectric ceramic compositions |
DE19517699C2 (en) | 1995-05-13 | 1999-11-04 | Wilhelm Fleischmann | Device for vacuum sealing a wound |
US5792173A (en) | 1995-07-10 | 1998-08-11 | Stuart D. Edwards | Wound closure hemostasis device |
US8801681B2 (en) | 1995-09-05 | 2014-08-12 | Argentum Medical, Llc | Medical device |
GB9523253D0 (en) | 1995-11-14 | 1996-01-17 | Mediscus Prod Ltd | Portable wound treatment apparatus |
SE9601853L (en) * | 1996-05-14 | 1997-06-09 | Moelnlycke Ab | Wound dressing and manufacturing process therefore |
US5893368A (en) * | 1996-05-15 | 1999-04-13 | Virginia Commonwealth University | Method for lowering abdominal pressure |
US5662598A (en) | 1996-06-27 | 1997-09-02 | Tobin; Joshua M. | Silicone occlusive dressing for penetrating thoracic trauma |
US5735833A (en) * | 1996-12-11 | 1998-04-07 | Bristol-Myers Squibb Co. | Lavage tip |
US5902260A (en) * | 1997-03-14 | 1999-05-11 | Hollister Incorporated | Thin film wound dressing with stretchable foraminous backing layer |
ATE221360T1 (en) | 1997-05-02 | 2002-08-15 | Johnson & Johnson Medical | ABSORBENT WOUND DRESSINGS |
DE19722075C1 (en) * | 1997-05-27 | 1998-10-01 | Wilhelm Dr Med Fleischmann | Medication supply to open wounds |
NL1006457C2 (en) * | 1997-07-03 | 1999-01-05 | Polymedics N V | Drainage system to be used with an open wound, element used for applying a drainage pipe or hose and method for applying the drainage system. |
US6135116A (en) | 1997-07-28 | 2000-10-24 | Kci Licensing, Inc. | Therapeutic method for treating ulcers |
US6420622B1 (en) | 1997-08-01 | 2002-07-16 | 3M Innovative Properties Company | Medical article having fluid control film |
US6030358A (en) * | 1997-08-08 | 2000-02-29 | Odland; Rick Matthew | Microcatheter and method for site specific therapy |
GB9719520D0 (en) * | 1997-09-12 | 1997-11-19 | Kci Medical Ltd | Surgical drape and suction heads for wound treatment |
AU755496B2 (en) | 1997-09-12 | 2002-12-12 | Kci Licensing, Inc. | Surgical drape and suction head for wound treatment |
US6071267A (en) * | 1998-02-06 | 2000-06-06 | Kinetic Concepts, Inc. | Medical patient fluid management interface system and method |
US5938626A (en) | 1998-07-24 | 1999-08-17 | Virginia Commonwealth University | Apparatus for lowering intra-abdominal pressure |
JP3056429U (en) | 1998-08-03 | 1999-02-16 | 城北工業株式会社 | Roll-shaped moisture-proof film with an adhesive layer for walls |
US6458109B1 (en) | 1998-08-07 | 2002-10-01 | Hill-Rom Services, Inc. | Wound treatment apparatus |
US6488643B1 (en) * | 1998-10-08 | 2002-12-03 | Kci Licensing, Inc. | Wound healing foot wrap |
GB9822341D0 (en) | 1998-10-13 | 1998-12-09 | Kci Medical Ltd | Negative pressure therapy using wall suction |
US6042539A (en) * | 1999-03-26 | 2000-03-28 | Ethicon Endo-Surgery, Inc. | Vacuum-actuated tissue-lifting device and method |
US6287316B1 (en) | 1999-03-26 | 2001-09-11 | Ethicon, Inc. | Knitted surgical mesh |
KR100661203B1 (en) | 1999-04-02 | 2006-12-22 | 케이씨아이 라이센싱, 아이엔씨. | Negative pressure wound therapy system with heating and cooling provision |
EP1168997B1 (en) | 1999-04-02 | 2013-04-24 | KCI Licensing, Inc. | Vacuum assisted closure system with provision for introduction of agent |
US6856821B2 (en) * | 2000-05-26 | 2005-02-15 | Kci Licensing, Inc. | System for combined transcutaneous blood gas monitoring and vacuum assisted wound closure |
US7799004B2 (en) | 2001-03-05 | 2010-09-21 | Kci Licensing, Inc. | Negative pressure wound treatment apparatus and infection identification system and method |
US6695823B1 (en) * | 1999-04-09 | 2004-02-24 | Kci Licensing, Inc. | Wound therapy device |
JP2003501109A (en) * | 1999-06-10 | 2003-01-14 | ユニバーシティ・オブ・ユタ・リサーチ・ファウンデーション | μO-conopeptide and its use as a local anesthetic |
US6991643B2 (en) * | 2000-12-20 | 2006-01-31 | Usgi Medical Inc. | Multi-barbed device for retaining tissue in apposition and methods of use |
US6745306B1 (en) * | 1999-07-29 | 2004-06-01 | Microsoft Corporation | Method and system for restricting the load of physical address translations of virtual addresses |
GB9926538D0 (en) | 1999-11-09 | 2000-01-12 | Kci Medical Ltd | Multi-lumen connector |
US6383162B1 (en) * | 1999-11-12 | 2002-05-07 | Paul H. Sugarbaker | Apparatus and method for abdomino-pelvic chemotherapy perfusion and lavage |
WO2001037922A2 (en) | 1999-11-29 | 2001-05-31 | Hill-Rom Services, Inc. | Wound treatment apparatus |
DE29922588U1 (en) * | 1999-12-14 | 2000-03-23 | Primed Medizintechnik Gmbh | Drainage strips for wound drainage |
WO2001062328A1 (en) | 2000-02-24 | 2001-08-30 | Venetec International, Inc. | Universal catheter anchoring system |
CN1263973C (en) | 2000-03-20 | 2006-07-12 | 尤尼科伊尔国际有限公司 | Hose bending clamp |
GB0011202D0 (en) * | 2000-05-09 | 2000-06-28 | Kci Licensing Inc | Abdominal wound dressing |
US20010043943A1 (en) * | 2000-05-22 | 2001-11-22 | Coffey Arthur C. | Combination SIS and vacuum bandage and method |
US6803495B2 (en) * | 2000-06-28 | 2004-10-12 | World Properties, Inc. | Polyurethane foam composition and method of manufacture thereof |
US6315116B1 (en) * | 2000-08-03 | 2001-11-13 | Karsten Manufacturing Corp. | Golf bag with seat assembly |
US6869412B2 (en) | 2000-11-13 | 2005-03-22 | Edward Allan Ross | Method and device for intravascular plasma fluid removal |
US6685681B2 (en) * | 2000-11-29 | 2004-02-03 | Hill-Rom Services, Inc. | Vacuum therapy and cleansing dressing for wounds |
US6855135B2 (en) * | 2000-11-29 | 2005-02-15 | Hill-Rom Services, Inc. | Vacuum therapy and cleansing dressing for wounds |
US7763769B2 (en) | 2001-02-16 | 2010-07-27 | Kci Licensing, Inc. | Biocompatible wound dressing |
US7700819B2 (en) | 2001-02-16 | 2010-04-20 | Kci Licensing, Inc. | Biocompatible wound dressing |
US6540705B2 (en) | 2001-02-22 | 2003-04-01 | Core Products International, Inc. | Ankle brace providing upper and lower ankle adjustment |
US7658749B2 (en) | 2001-09-05 | 2010-02-09 | Wittmann Dietmar H | Method for creating a temporary hypobaric wound space in an intentionally left open surgical wound to diagnose substrate losses and prevent exogenous contamination with microorganisms |
DE20115990U1 (en) | 2001-09-28 | 2001-12-13 | Atmos Medizintechnik Gmbh & Co | Suction device with medical suction pump |
WO2003057070A2 (en) * | 2001-12-26 | 2003-07-17 | Hill-Rom Services Inc. | Vented vacuum bandage and method |
CA2468309A1 (en) | 2001-12-26 | 2003-07-17 | Robert Petrosenko | Wound vacuum therapy dressing kit |
ATE526918T1 (en) * | 2002-02-28 | 2011-10-15 | Kci Medical Resources | EXTERNAL CATHETER ACCESS TO A VACUUM DRESSING |
JP2005536275A (en) * | 2002-08-21 | 2005-12-02 | ヒル−ロム サービシズ,インコーポレイテッド | Wound packing to prevent wound closure |
US6979324B2 (en) | 2002-09-13 | 2005-12-27 | Neogen Technologies, Inc. | Closed wound drainage system |
US6951553B2 (en) | 2002-12-31 | 2005-10-04 | Kci Licensing, Inc | Tissue closure treatment system and method with externally-applied patient interface |
US7976519B2 (en) * | 2002-12-31 | 2011-07-12 | Kci Licensing, Inc. | Externally-applied patient interface system and method |
US7252659B2 (en) | 2003-02-07 | 2007-08-07 | Alfred E. Mann Institute For Biomedical Engineering At The University Of Southern California | Implanted surgical drain with sensing and transmitting elements for monitoring internal tissue condition |
US7284730B2 (en) | 2003-04-09 | 2007-10-23 | Dale Medical Products, Inc. | Transducer holder |
US7105001B2 (en) | 2003-05-21 | 2006-09-12 | Mandelbaum Jon A | Surgical method and composition utilizing submucosal tissue to prevent incisional hernias |
US20050101922A1 (en) * | 2003-11-07 | 2005-05-12 | Bemis Manufacturing Company | Suction canister and drainage of same |
US7128735B2 (en) | 2004-01-02 | 2006-10-31 | Richard Scott Weston | Reduced pressure wound treatment appliance |
GB0407502D0 (en) | 2004-04-02 | 2004-05-05 | Inotec Amd Ltd | Hyperbaric dressing |
US7790945B1 (en) | 2004-04-05 | 2010-09-07 | Kci Licensing, Inc. | Wound dressing with absorption and suction capabilities |
US8062272B2 (en) | 2004-05-21 | 2011-11-22 | Bluesky Medical Group Incorporated | Flexible reduced pressure treatment appliance |
US7909805B2 (en) | 2004-04-05 | 2011-03-22 | Bluesky Medical Group Incorporated | Flexible reduced pressure treatment appliance |
GB0424046D0 (en) | 2004-10-29 | 2004-12-01 | Smith & Nephew | Apparatus |
GB0508528D0 (en) | 2005-04-27 | 2005-06-01 | Smith & Nephew | SAI with macrostress |
DE202004017052U1 (en) | 2004-11-02 | 2005-06-09 | Riesinger, Birgit | Device for wound treatment using negative pressure |
DE102005007016A1 (en) * | 2005-02-15 | 2006-08-24 | Fleischmann, Wilhelm, Dr.med. | Device for the treatment of wounds |
DE102005026771B4 (en) * | 2005-06-10 | 2007-04-19 | Erdmann, Alfons, Dr. med. | Device for treating patients suffering from skin lesions distributed on the skin surface as well as body coverage |
US20070248501A1 (en) | 2006-03-17 | 2007-10-25 | Blue Band, L.L.C. | Specimen handling device |
US7779625B2 (en) | 2006-05-11 | 2010-08-24 | Kalypto Medical, Inc. | Device and method for wound therapy |
US8715267B2 (en) | 2006-06-02 | 2014-05-06 | Kci Medical Resources | Assemblies, systems, and methods for vacuum assisted internal drainage during wound healing |
DE102006032870A1 (en) | 2006-07-14 | 2008-01-17 | Rehau Ag + Co. | Installation and attachment fitting for central heating plastic pipe has bent upper section and ratchet holder |
GB0712735D0 (en) | 2006-07-26 | 2007-08-08 | Smith & Nephew | Dressing |
US8206279B2 (en) * | 2006-09-04 | 2012-06-26 | Shieldheart Medtech Ab | Surgical method |
WO2008040020A2 (en) * | 2006-09-28 | 2008-04-03 | Puricore, Inc. | Apparatus and method for wound, cavity, and bone treatment |
SE0602064L (en) | 2006-10-03 | 2008-04-04 | Moelnlycke Health Care Ab | Wound dressing with pressure distributing hose inlet |
US20080103462A1 (en) | 2006-10-30 | 2008-05-01 | Stuart Wenzel | Wound healing patch with integral passive vacuum and electrostimulation |
US8463855B2 (en) * | 2006-11-06 | 2013-06-11 | Research In Motion Limited | System and method of message compression |
JP5193233B2 (en) | 2007-02-21 | 2013-05-08 | シー・アール・バード・インコーポレーテッド | ACS treatment system |
US20090099519A1 (en) * | 2007-09-07 | 2009-04-16 | Albert Einstein Healthcare Network | Advanced abdominal dressing for the treatment of the postoperative hypothermic patients with an open abdomen |
AU2009310391B2 (en) | 2008-10-29 | 2015-07-09 | Kci Licensing, Inc. | Modular, reduced-pressure, wound-closure systems and methods |
KR102194234B1 (en) * | 2014-06-02 | 2020-12-22 | 삼성전자주식회사 | Method and apparatus for generating the depth value corresponding the object using the depth camera |
-
2000
- 2000-05-09 GB GBGB0011202.9A patent/GB0011202D0/en not_active Ceased
-
2001
- 2001-05-09 JP JP2001581901A patent/JP4741160B2/en not_active Expired - Lifetime
- 2001-05-09 AT AT01925755T patent/ATE322303T1/en active
- 2001-05-09 PT PT01925755T patent/PT1284777E/en unknown
- 2001-05-09 AU AU52434/01A patent/AU779655B2/en not_active Expired
- 2001-05-09 RU RU2002129933/14A patent/RU2261692C2/en active
- 2001-05-09 KR KR1020027014986A patent/KR100798497B1/en active IP Right Grant
- 2001-05-09 US US10/275,671 patent/US7381859B2/en not_active Expired - Lifetime
- 2001-05-09 CN CNB018119921A patent/CN100335145C/en not_active Expired - Lifetime
- 2001-05-09 DK DK01925755T patent/DK1284777T3/en active
- 2001-05-09 DE DE60118546T patent/DE60118546T2/en not_active Expired - Lifetime
- 2001-05-09 WO PCT/GB2001/002035 patent/WO2001085248A1/en active Application Filing
- 2001-05-09 NZ NZ522486A patent/NZ522486A/en not_active IP Right Cessation
- 2001-05-09 MX MXPA02010984A patent/MXPA02010984A/en active IP Right Grant
- 2001-05-09 BR BRPI0110682A patent/BRPI0110682B8/en not_active IP Right Cessation
- 2001-05-09 CA CA002408305A patent/CA2408305C/en not_active Expired - Lifetime
- 2001-05-09 IL IL15268601A patent/IL152686A0/en unknown
- 2001-05-09 EP EP01925755A patent/EP1284777B1/en not_active Expired - Lifetime
- 2001-05-09 ES ES01925755T patent/ES2261397T3/en not_active Expired - Lifetime
- 2001-05-09 GB GB0111298A patent/GB2365350B/en not_active Expired - Lifetime
-
2002
- 2002-11-07 IL IL152686A patent/IL152686A/en active IP Right Grant
- 2002-11-08 ZA ZA200209097A patent/ZA200209097B/en unknown
-
2003
- 2003-08-12 HK HK03105782A patent/HK1053434A1/en not_active IP Right Cessation
-
2008
- 2008-05-27 US US12/127,668 patent/US7951100B2/en not_active Expired - Fee Related
-
2011
- 2011-02-21 JP JP2011035038A patent/JP5095833B2/en not_active Expired - Lifetime
- 2011-05-23 US US13/113,914 patent/US8187210B2/en not_active Expired - Lifetime
-
2012
- 2012-05-08 US US13/466,917 patent/US8672903B2/en not_active Expired - Fee Related
-
2014
- 2014-02-03 US US14/171,418 patent/US9445947B2/en not_active Expired - Lifetime
-
2016
- 2016-08-17 US US15/239,456 patent/US10682259B2/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8829263B2 (en) | 2005-09-07 | 2014-09-09 | Smith & Nephew, Inc. | Self contained wound dressing with micropump |
US8715256B2 (en) | 2007-11-21 | 2014-05-06 | Smith & Nephew Plc | Vacuum assisted wound dressing |
US9579431B2 (en) | 2009-04-17 | 2017-02-28 | Kalypto Medical, Inc. | Negative pressure wound therapy device |
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2408305C (en) | Abdominal wound dressing | |
US5501661A (en) | Method of making a wound dressing product containing a porous layer | |
US5447492A (en) | External fixation dressing for accommodating a retaining pin | |
US9717828B2 (en) | Tube attachment device for wound treatment | |
US5549584A (en) | Apparatus for removing fluid from a wound | |
US6345623B1 (en) | Surgical drape and suction head for wound treatment | |
JPH04212352A (en) | Wound bandage | |
US20070027414A1 (en) | Laminar construction negative pressure wound dressing including bioabsorbable material | |
EP0650713A2 (en) | Wound packing and package therefor | |
WO2021070049A1 (en) | Low-profile superabsorbent dressing | |
WO2021033077A1 (en) | Gel-blocking connection assembly for absorbent negative pressure dressing |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20210510 |