CA2162402C - Universal gastric band - Google Patents
Universal gastric band Download PDFInfo
- Publication number
- CA2162402C CA2162402C CA002162402A CA2162402A CA2162402C CA 2162402 C CA2162402 C CA 2162402C CA 002162402 A CA002162402 A CA 002162402A CA 2162402 A CA2162402 A CA 2162402A CA 2162402 C CA2162402 C CA 2162402C
- Authority
- CA
- Canada
- Prior art keywords
- band
- stomach
- tail end
- inflatable member
- facing surface
- 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
- 230000002496 gastric effect Effects 0.000 title claims abstract description 41
- 210000002784 stomach Anatomy 0.000 claims abstract description 36
- 239000012530 fluid Substances 0.000 claims abstract description 13
- 208000008589 Obesity Diseases 0.000 claims abstract description 11
- 208000012696 congenital leptin deficiency Diseases 0.000 claims abstract description 10
- 208000001022 morbid obesity Diseases 0.000 claims abstract description 10
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 8
- 230000037303 wrinkles Effects 0.000 claims description 2
- 230000017074 necrotic cell death Effects 0.000 abstract description 6
- 238000001356 surgical procedure Methods 0.000 abstract description 2
- 230000002844 continuous effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 230000003187 abdominal effect Effects 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 238000002357 laparoscopic surgery Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002980 postoperative effect Effects 0.000 description 2
- 229920004934 Dacron® Polymers 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 210000003238 esophagus Anatomy 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 238000002350 laparotomy Methods 0.000 description 1
- 235000020824 obesity Nutrition 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
Classifications
-
- 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
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/0003—Apparatus for the treatment of obesity; Anti-eating devices
- A61F5/0013—Implantable devices or invasive measures
- A61F5/005—Gastric bands
- A61F5/0066—Closing devices for gastric bands
-
- 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
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/0003—Apparatus for the treatment of obesity; Anti-eating devices
- A61F5/0013—Implantable devices or invasive measures
- A61F5/003—Implantable devices or invasive measures inflatable
-
- 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
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/0003—Apparatus for the treatment of obesity; Anti-eating devices
- A61F5/0013—Implantable devices or invasive measures
- A61F5/005—Gastric bands
-
- 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
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/0003—Apparatus for the treatment of obesity; Anti-eating devices
- A61F5/0013—Implantable devices or invasive measures
- A61F5/005—Gastric bands
- A61F5/0053—Gastric bands remotely adjustable
- A61F5/0056—Gastric bands remotely adjustable using injection ports
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/132—Tourniquets
- A61B17/1322—Tourniquets comprising a flexible encircling member
- A61B17/1327—Tensioning clamps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/132—Tourniquets
- A61B17/135—Tourniquets inflatable
Abstract
A gastric band useful for the surgical treat-ment and control of morbid obesity. The gastric band (10) has inner and outer surfaces. The in-ner surface (15) has an inflatable member (16) dis-posed thereon which substantially completely cov-ers the inner surface (15) of the band (11). The gas-tric band (10) is fastened in an encircling position around the stomach. After the band (10) is fastened around the stomach, a fluid is injected into the in-flatable member (16) thereby constricting the stoma of the stomach. The inflatable member (16) is ad-justed so that the stoma opening is at the desired diameter. The gastric band requires no adjustment other than inflation and presents a smooth, contin-uous inner surface to the adjacent tissue, thereby reducing necrosis.
Description
21 624 ~2 BACKGROUND OF THE INVENTION
1. Field of the Invention This invention relates to devices for the control of obesity, and, more particularly, to a surgically implantable adjustable band for encircling the stomach.
1. Field of the Invention This invention relates to devices for the control of obesity, and, more particularly, to a surgically implantable adjustable band for encircling the stomach.
2. Prior Art Several years ago, Kuzmak, et al. in U.S. Patent 4,592,339, described a belt-like band for encircling the stomach to control morbid obesity. The band comprised substantially a belt which could be passed around the stomach in a circling position and then cinched tight in order to adjust the stoma opening within the stomach. Further improvements in the gastric band have included having an adjustable portion of the band comprising an inflatable member which permits the fine adjustment of the stoma opening after the size of the stoma is initially set by the band tightening procedure. The band tightening procedure normally involves the placement of a calibrating apparatus in the stomach to detect the stoma size. Once the apparatus is placed within the stomach the gastric band is cinched down tight until the stoma opening approximates the desired size. The band is fastened in position, usually by sutures, and the stoma opening finally adjusted by injecting a fluid into an inflatable member which is coextensive with a portion of the inner stomach-contacting surface of the band. The means for injecting the fluid into the inflatable member usually comprises a fi7.1 port located beneath the skin which can be accessed extracorporeally by transdermal injection. Thus, ~ 21 624 02 following implantation, the gastric band can be adjusted, within a narrow range, to enlarge or reduce the stoma as required.
One of the disadvantages of the prior art gastric bands is the difficulty in tensioning the band around the stomach to approximate the desired stoma. This is particularly difficult when the band is to be placed laparoscopically. When the band is placed laparoscopically, special instruments are required to tension the band prior to the fine adjustment of the stoma. Such instruments as are required to grasp the band and pull it into - la -:~ C
t 2i fi2402 an encircling position around the stomach then cinch it tight, are difficult to manipulate through a laparoscopic canula. It would therefore be desirable to provide a band having an inflatable member thereon which can be easily fastened into an encircling position around the stomach and in which the adjustment of the stoma opening can be regulated solely by the injection of fluid into the inflatable member.
SUMMARY OF THE INVENTION
An object of this invention is to provide a gastric band which can be laparoscopically placed and non-adjustably fastened into an encircling position around the stomach to form a ring having an inner diameter.
It is yet another object of this invention to provide a gastric band wherein the band can be easily affixed in an encircling position around the stomach by conventional laparoscopic instruments.
It is yet another object of this invention to provide a gastric band adapted for laparoscopic placement around the stomach and thereafter to be non-adjustably locked into a circle around the stomach to compress the encircled portion of the stomach to constrict the stoma thereof which constriction may be further adjusted solely by means of an inflatable member.
It is yet a further object of the invention to provide a gastric band having an inflatable member deployed on an inner surface wherein said inner surface presents a smooth, continuous surface when the band is fastened in an encircling position and the inflatable member is inflated.
These and other objects of this invention will soon become apparent as we turn to a description of the preferred embodiments.
The invention may be summarized, according to a first broad aspect as a gastric band for the treatment of morbid obesity, said band being adapted for laparoscopic placement around the stomach of a patient, said band comprising a body portion having a head end and a tail end and an inner stomach-facing surface therebetween, said tail end comprising an elongate tubular member having means thereon for providing a fluid-tight connection of said tubular member to an injection reservoir, said head end having means thereon for receiving said tail end and locking said band into a circle having an inner diameter and an inflatable member substantially entirely coextensive with said inner stomach-facing surface of said body portion of said gastric band when said band is locked into said circle having said inner diameter, and which said inflatable member is in fluid communication with said tubular member.
According to a second broad aspect, the invention provides a gastric band for the treatment of morbid obesity, said band being adapted for laparoscopic placement around the stomach of a patient, said band comprising a body portion having a head end and a tail end and an inner stomach-facing surface therebetween, said tail end comprising an elongate tubular member having means thereon for providing a fluid-tight connection of said tubular member to an injection reservoir, said head end having means thereon for receiving - 2a -said tail end and locking said band into a circle having a single inner diameter and an inflatable member in fluid communication with said tubular member and substantially coextensive with said inner stomach-facing surface of said body portion.
According to a third broad aspect, the invention provides a gastric band for the treatment of morbid obesity, said band being adapted for laparoscopic placement around the stomach of a patient, said band comprising a body portion having a head end and a tail end and an inner stomach-facing surface therebetween, said tail end comprising an elongate tubular member having means thereon for providing a fluid-tight connection of said tubular member to an injection reservoir, said head end having means thereon for receiving said tail end and non-adjustably locking said band into a circle and an inflatable member coextensive with at least a portion of said inner stomach-facing surface of said body portion which said inflatable member is in fluid communication with said tabular member.
- 2b -~~'i 73759-11 .!4V0 94/27504 216 2 4 0 2 PCT/US94/05814 2 Figure 1 is a perspective view of the gastric band according to the present 3 invention.
One of the disadvantages of the prior art gastric bands is the difficulty in tensioning the band around the stomach to approximate the desired stoma. This is particularly difficult when the band is to be placed laparoscopically. When the band is placed laparoscopically, special instruments are required to tension the band prior to the fine adjustment of the stoma. Such instruments as are required to grasp the band and pull it into - la -:~ C
t 2i fi2402 an encircling position around the stomach then cinch it tight, are difficult to manipulate through a laparoscopic canula. It would therefore be desirable to provide a band having an inflatable member thereon which can be easily fastened into an encircling position around the stomach and in which the adjustment of the stoma opening can be regulated solely by the injection of fluid into the inflatable member.
SUMMARY OF THE INVENTION
An object of this invention is to provide a gastric band which can be laparoscopically placed and non-adjustably fastened into an encircling position around the stomach to form a ring having an inner diameter.
It is yet another object of this invention to provide a gastric band wherein the band can be easily affixed in an encircling position around the stomach by conventional laparoscopic instruments.
It is yet another object of this invention to provide a gastric band adapted for laparoscopic placement around the stomach and thereafter to be non-adjustably locked into a circle around the stomach to compress the encircled portion of the stomach to constrict the stoma thereof which constriction may be further adjusted solely by means of an inflatable member.
It is yet a further object of the invention to provide a gastric band having an inflatable member deployed on an inner surface wherein said inner surface presents a smooth, continuous surface when the band is fastened in an encircling position and the inflatable member is inflated.
These and other objects of this invention will soon become apparent as we turn to a description of the preferred embodiments.
The invention may be summarized, according to a first broad aspect as a gastric band for the treatment of morbid obesity, said band being adapted for laparoscopic placement around the stomach of a patient, said band comprising a body portion having a head end and a tail end and an inner stomach-facing surface therebetween, said tail end comprising an elongate tubular member having means thereon for providing a fluid-tight connection of said tubular member to an injection reservoir, said head end having means thereon for receiving said tail end and locking said band into a circle having an inner diameter and an inflatable member substantially entirely coextensive with said inner stomach-facing surface of said body portion of said gastric band when said band is locked into said circle having said inner diameter, and which said inflatable member is in fluid communication with said tubular member.
According to a second broad aspect, the invention provides a gastric band for the treatment of morbid obesity, said band being adapted for laparoscopic placement around the stomach of a patient, said band comprising a body portion having a head end and a tail end and an inner stomach-facing surface therebetween, said tail end comprising an elongate tubular member having means thereon for providing a fluid-tight connection of said tubular member to an injection reservoir, said head end having means thereon for receiving - 2a -said tail end and locking said band into a circle having a single inner diameter and an inflatable member in fluid communication with said tubular member and substantially coextensive with said inner stomach-facing surface of said body portion.
According to a third broad aspect, the invention provides a gastric band for the treatment of morbid obesity, said band being adapted for laparoscopic placement around the stomach of a patient, said band comprising a body portion having a head end and a tail end and an inner stomach-facing surface therebetween, said tail end comprising an elongate tubular member having means thereon for providing a fluid-tight connection of said tubular member to an injection reservoir, said head end having means thereon for receiving said tail end and non-adjustably locking said band into a circle and an inflatable member coextensive with at least a portion of said inner stomach-facing surface of said body portion which said inflatable member is in fluid communication with said tabular member.
- 2b -~~'i 73759-11 .!4V0 94/27504 216 2 4 0 2 PCT/US94/05814 2 Figure 1 is a perspective view of the gastric band according to the present 3 invention.
4 Figure 2 is the gastric band according to the present invention fastened in an encircling position and partially inflated.
DESCRIPTION OF THE PREFERRED EMBODIMENT
8 As mentioned earlier, prior art gastric bands have two steps or stages of 9 adjustment: the first step roughly affixes the gastric band in a position to encircle the to stomach with the stoma opening approximating the desired size. This first adjustment is 11 analogous to tightening a belt around the waist until the buckle tongue passes through one 12 of a plurality of holes rendering comfortable tension. The next step in the adjustment 13 requires injection of a fluid into the inflatable member to bring the stoma opening to the 14 desired size.
Prior art gastric bands, lacking a large range of inflatable adjustment, require 16 an initial "rough" adjustment. The "rough" adjustment comprising the first step in the 17 gastric stoma-constricting process requires tensioning the prior art band, and holding the 18 tension on the band, while sutures are placed to lock the band in the encircling position.
19 This is a cumbersome procedure to perform laparoscopically and the design of the present 2 0 invention overcomes some of the difficulties with tensioning the band.
21 Turning now to Figure 1, we see a gastric band, generally indicated at the 2 2 numeral 10, which has a body portion 11 with an inner stomach-facing surface 15. The 23 body portion 11 has a head end 12 and a tail end 13 with one or more suture holes 13(a) 2 4 therein. A fill tube 14, which is generally a tube having a single lumen 14(a) coextensive 2 5 therewith, is in fluid communication with an inflatable member 16 on the inner surface 15 of 2 6 the band body 11. It is an important feature of this invention that the inflatable portion 16 is 2 7 substantially co-extensive with the inner surface 15 of the body portion 11 so as to present a 2 8 substantially continuous surface free of abrupt contours when the band encircles the 2 9 stomach and the inflatable portion 16 is inflated. The central lumen 14(a) of the fill tube 14 SUBSTITUrtE SHEET (RULE 26) 1 enters into the inflatable member 16 at lumen opening 17. The head 12 of the body portion 2 11 has a buckle 19 with a pull tab 18 having a suture hole 18(a) integral therewith. Both 3 portions which receive a suture, that is the pull tab 18 and the tail 13, are preferably medical 4 grade silicone reinforced with dacron.
In practice, the gastric band is placed in the circling position around the 6 stomach as shown in Figure 2. (In Figure 2 the stomach is omitted for clarity.) This is 7 accomplished by pushing the fill tube 14 through a laparoscopic canula (not shown) in the 8 patient's abdomen. Laparoscopic placement consists of blunt dissection around the greater 9 curvature of the stomach. The end of the fill tube 14 is passed around the stomach, and the 1 o tail 13 is attached to the buckle 19, so that the buckle and the tail are non-adjustably and 11 irreversibly affixed to one another. In this sense, the band is a "one-size-fits-all" device.
12 That is, for a particular band there is only one single position in which the tail and buckle 13 can be attached to one another. Further adjustment of the stoma; the narrow opening in the 14 stomach created by the band, is performed solely by inflation or deflation of the inflatable member 16 after the band is secured in this single position.
16 Prior art gastric bands employ an adjustable balloon portion used for small 17 post-operative adjustment of the stoma if necessary. The laparoscopic hydraulic gastric 18 band outlined herein has a larger balloon covering a greater area of the inner surface of the 19 gastric band than taught in the prior art. The inflatable member or balloon 16 preferably is 2 o coextensive with the inner stomach-facing surface 15 of the band between the head end 12 21 and the tail end 13. This larger balloon 16 is utilized to adjust the stoma at the time of 2 2 surgery. The interior of the adjustable balloon 16 is in fluid communication with an 23 injection reservoir (not shown) by means of the central lumen 14(a) of the fill tube 14, as 2 4 with prior art adjustable gastric bands. The inflatable member 16 is gradually inflated with saline via the injection reservoir (not shown) such that the inflatable member 16, which, as 2 6 stated above, is coextensive with the inner surface 15 of the band 11 between the head end 2 7 12 and the tail end 13, presses on and constricts the stomach wall underlying the band. This 2 8 results in the decrease of the opening (stoma) inside the stomach directly under the 2 9 encircling band. The continuous surface presented by the enlarged inflatable member to the SUBSTITUTE SHEET (RULE 26) --~'O 94/27504 216 2 4 0 2 PCT/US94/05814 1 underlying tissue inhibits squeezing of the tissue into wrinkles, dimples or similar 2 discontinuities such as are present on the inner surface of prior art bands and thereby 3 prevents necrosis.
4 An electronic pressure transducer known as a gastrostenometer electronic 5 sensor, coupled to a calibration probe known generically as a "calibration tube" is used to 6 measure the size of the stoma. The calibration tube is introduced through the patient's '7 mouth and esophagus into the stomach. The band is inflated, tightening it around the tip of s the calibration tube. The gastrostenometer electronic sensor indicates the stoma diameter 9 created as the band is tightened.
1o The present invention allows for the laparoscopic implantation of a 11 therapeutic surgical device without the risks associated with major abdominal incisions in 12 the obese patient. Faster healing, reduced complications, reduced hospital stay and 13 drastically reduced pain are among the advantages of laparoscopic placement. The gastric 14 band according to the present invention facilitates laparoscopic placement and will also allow wider use of the gastric band system to create a gastric restricter procedure for the 16 treatment of morbid obesity. This band enables more surgeons, skilled in the art of 1'7 laparoscopic surgery to undertake this operation without the need for highly specialized, 18 difficult to use tensioning instruments. Since there is only one single, non-adjustable 19 locking position for the band around the stomach, the procedure itself should lend itself to 2 0 more rigorous standardization. Also, more patients will consider having this procedure 21 performed because of the advantages of laparoscopic surgery over traditional abdominal 2 2 laparotomies. These advantages, coupled with the advantages of the prior art gastric bands, 2 3 which enable post operative fine tuning of the stoma, enable a more facile procedure to be 2 4 performed.
2 5 In general, the smoother or more continuous the inner surface 15 of the band 2 6 10, the less likely the chance of necrosis. The single locking or fastening position of the 2 7 present gastric band ensures that the inflatable member 16 will be substantially coextensive 2 8 with the inner surface 15 of the band 10 and continuous with the buckle 19. This fixed-2 9 diameter band enables the inner surface 15 to present as a continuous surface to the SUBSTITUTE SHEET (RULE 26~
1 encircled tissue as the band is inflated, thereby preventing necrosis. Prior art gastric bands 2 lack a provision for assuring that the inflatable member is adjacent to and continuous with 3 the buckle portion when the band is locked into an encircling position. This permits a gap 4 or space between the inflatable member and the buckle along the inner surface when the inflatable member is inflated. Tissue can squeeze into such a gap, causing necrosis. The 6 reduction and/or elimination of such discontinuities on the inner surface of the (inflated) 7 band as taught hereinabove reduces the possibility of necrosis.
DESCRIPTION OF THE PREFERRED EMBODIMENT
8 As mentioned earlier, prior art gastric bands have two steps or stages of 9 adjustment: the first step roughly affixes the gastric band in a position to encircle the to stomach with the stoma opening approximating the desired size. This first adjustment is 11 analogous to tightening a belt around the waist until the buckle tongue passes through one 12 of a plurality of holes rendering comfortable tension. The next step in the adjustment 13 requires injection of a fluid into the inflatable member to bring the stoma opening to the 14 desired size.
Prior art gastric bands, lacking a large range of inflatable adjustment, require 16 an initial "rough" adjustment. The "rough" adjustment comprising the first step in the 17 gastric stoma-constricting process requires tensioning the prior art band, and holding the 18 tension on the band, while sutures are placed to lock the band in the encircling position.
19 This is a cumbersome procedure to perform laparoscopically and the design of the present 2 0 invention overcomes some of the difficulties with tensioning the band.
21 Turning now to Figure 1, we see a gastric band, generally indicated at the 2 2 numeral 10, which has a body portion 11 with an inner stomach-facing surface 15. The 23 body portion 11 has a head end 12 and a tail end 13 with one or more suture holes 13(a) 2 4 therein. A fill tube 14, which is generally a tube having a single lumen 14(a) coextensive 2 5 therewith, is in fluid communication with an inflatable member 16 on the inner surface 15 of 2 6 the band body 11. It is an important feature of this invention that the inflatable portion 16 is 2 7 substantially co-extensive with the inner surface 15 of the body portion 11 so as to present a 2 8 substantially continuous surface free of abrupt contours when the band encircles the 2 9 stomach and the inflatable portion 16 is inflated. The central lumen 14(a) of the fill tube 14 SUBSTITUrtE SHEET (RULE 26) 1 enters into the inflatable member 16 at lumen opening 17. The head 12 of the body portion 2 11 has a buckle 19 with a pull tab 18 having a suture hole 18(a) integral therewith. Both 3 portions which receive a suture, that is the pull tab 18 and the tail 13, are preferably medical 4 grade silicone reinforced with dacron.
In practice, the gastric band is placed in the circling position around the 6 stomach as shown in Figure 2. (In Figure 2 the stomach is omitted for clarity.) This is 7 accomplished by pushing the fill tube 14 through a laparoscopic canula (not shown) in the 8 patient's abdomen. Laparoscopic placement consists of blunt dissection around the greater 9 curvature of the stomach. The end of the fill tube 14 is passed around the stomach, and the 1 o tail 13 is attached to the buckle 19, so that the buckle and the tail are non-adjustably and 11 irreversibly affixed to one another. In this sense, the band is a "one-size-fits-all" device.
12 That is, for a particular band there is only one single position in which the tail and buckle 13 can be attached to one another. Further adjustment of the stoma; the narrow opening in the 14 stomach created by the band, is performed solely by inflation or deflation of the inflatable member 16 after the band is secured in this single position.
16 Prior art gastric bands employ an adjustable balloon portion used for small 17 post-operative adjustment of the stoma if necessary. The laparoscopic hydraulic gastric 18 band outlined herein has a larger balloon covering a greater area of the inner surface of the 19 gastric band than taught in the prior art. The inflatable member or balloon 16 preferably is 2 o coextensive with the inner stomach-facing surface 15 of the band between the head end 12 21 and the tail end 13. This larger balloon 16 is utilized to adjust the stoma at the time of 2 2 surgery. The interior of the adjustable balloon 16 is in fluid communication with an 23 injection reservoir (not shown) by means of the central lumen 14(a) of the fill tube 14, as 2 4 with prior art adjustable gastric bands. The inflatable member 16 is gradually inflated with saline via the injection reservoir (not shown) such that the inflatable member 16, which, as 2 6 stated above, is coextensive with the inner surface 15 of the band 11 between the head end 2 7 12 and the tail end 13, presses on and constricts the stomach wall underlying the band. This 2 8 results in the decrease of the opening (stoma) inside the stomach directly under the 2 9 encircling band. The continuous surface presented by the enlarged inflatable member to the SUBSTITUTE SHEET (RULE 26) --~'O 94/27504 216 2 4 0 2 PCT/US94/05814 1 underlying tissue inhibits squeezing of the tissue into wrinkles, dimples or similar 2 discontinuities such as are present on the inner surface of prior art bands and thereby 3 prevents necrosis.
4 An electronic pressure transducer known as a gastrostenometer electronic 5 sensor, coupled to a calibration probe known generically as a "calibration tube" is used to 6 measure the size of the stoma. The calibration tube is introduced through the patient's '7 mouth and esophagus into the stomach. The band is inflated, tightening it around the tip of s the calibration tube. The gastrostenometer electronic sensor indicates the stoma diameter 9 created as the band is tightened.
1o The present invention allows for the laparoscopic implantation of a 11 therapeutic surgical device without the risks associated with major abdominal incisions in 12 the obese patient. Faster healing, reduced complications, reduced hospital stay and 13 drastically reduced pain are among the advantages of laparoscopic placement. The gastric 14 band according to the present invention facilitates laparoscopic placement and will also allow wider use of the gastric band system to create a gastric restricter procedure for the 16 treatment of morbid obesity. This band enables more surgeons, skilled in the art of 1'7 laparoscopic surgery to undertake this operation without the need for highly specialized, 18 difficult to use tensioning instruments. Since there is only one single, non-adjustable 19 locking position for the band around the stomach, the procedure itself should lend itself to 2 0 more rigorous standardization. Also, more patients will consider having this procedure 21 performed because of the advantages of laparoscopic surgery over traditional abdominal 2 2 laparotomies. These advantages, coupled with the advantages of the prior art gastric bands, 2 3 which enable post operative fine tuning of the stoma, enable a more facile procedure to be 2 4 performed.
2 5 In general, the smoother or more continuous the inner surface 15 of the band 2 6 10, the less likely the chance of necrosis. The single locking or fastening position of the 2 7 present gastric band ensures that the inflatable member 16 will be substantially coextensive 2 8 with the inner surface 15 of the band 10 and continuous with the buckle 19. This fixed-2 9 diameter band enables the inner surface 15 to present as a continuous surface to the SUBSTITUTE SHEET (RULE 26~
1 encircled tissue as the band is inflated, thereby preventing necrosis. Prior art gastric bands 2 lack a provision for assuring that the inflatable member is adjacent to and continuous with 3 the buckle portion when the band is locked into an encircling position. This permits a gap 4 or space between the inflatable member and the buckle along the inner surface when the inflatable member is inflated. Tissue can squeeze into such a gap, causing necrosis. The 6 reduction and/or elimination of such discontinuities on the inner surface of the (inflated) 7 band as taught hereinabove reduces the possibility of necrosis.
8 While particular embodiments of the present invention have been illustrated 9 and described, it would be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. It 11 is therefore intended to cover in the appended claims all such changes and modifications 12 that are within the scope of this invention.
SUBSTIFUTE SHEET (RULE 26) _ ~ _.. ...._.,._.__. . i r T T
SUBSTIFUTE SHEET (RULE 26) _ ~ _.. ...._.,._.__. . i r T T
Claims (4)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A gastric band for the treatment of morbid obesity, said band being adapted for laparoscopic placement around the stomach of a patient, said band comprising a body portion having a head end and a tail end and an inner stomach-facing surface therebetween, said tail end comprising an elongate tubular member having means thereon for providing a fluid-tight connection of said tubular member to an injection reservoir, said head end having means thereon for receiving said tail end and locking said band into a circle having an inner diameter and an inflatable member substantially entirely coextensive with said inner stomach-facing surface of said body portion of said gastric band when said band is locked into said circle having said inner diameter, and which said inflatable member is in fluid communication with said tubular member.
2. A gastric band for the treatment of morbid obesity, said band being adapted for laparoscopic placement around the stomach of a patient, said band comprising a body portion having a head end and a tail end and an inner stomach-facing surface therebetween, said tail end comprising an elongate tubular member having means thereon for providing a fluid-tight connection of said tubular member to an injection reservoir, said head end having means thereon for receiving said tail end and locking said band into a circle having a single inner diameter and an inflatable member in fluid communication with said tubular member and substantially coextensive with said inner stomach-facing surface of said body portion.
3. A gastric band for the treatment of morbid obesity, said band being adapted for laparoscopic placement around the stomach of a patient, said band comprising a body portion having a head end and a tail end and an inner stomach-facing surface therebetween, said tail end comprising an elongate tubular member having means thereon for providing a fluid-tight connection of said tubular member to an injection reservoir, said head end having means thereon for receiving said tail end and non-adjustably locking said band into a circle and an inflatable member coextensive with at least a portion of said inner stomach-facing surface of said body portion which said inflatable member is in fluid communication with said tubular member.
4. A gastric band for the treatment of morbid obesity, said band being adapted for laparoscopic placement to encircle the stomach of a patient, said band comprising a body portion having a head end and a tail end and an inflatable member therebetween, said inflatable member having a stomach-facing surface substantially coextensive with said body portion and wherein when said gastric band is placed within a patient to encircle the stomach and said inflatable member is inflated, said stomach-facing surface does not wrinkle or fold, thereby presenting a smooth contour over the entire stomach-facing surface.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/068,411 US5601604A (en) | 1993-05-27 | 1993-05-27 | Universal gastric band |
US08/068,411 | 1993-05-27 | ||
PCT/US1994/005814 WO1994027504A1 (en) | 1993-05-27 | 1994-05-23 | Universal gastric band |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2162402A1 CA2162402A1 (en) | 1994-12-08 |
CA2162402C true CA2162402C (en) | 2000-06-20 |
Family
ID=22082405
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002162402A Expired - Lifetime CA2162402C (en) | 1993-05-27 | 1994-05-23 | Universal gastric band |
Country Status (7)
Country | Link |
---|---|
US (1) | US5601604A (en) |
EP (2) | EP0702529B2 (en) |
AU (1) | AU681674B2 (en) |
CA (1) | CA2162402C (en) |
DE (2) | DE69435217D1 (en) |
HK (1) | HK1046837A1 (en) |
WO (1) | WO1994027504A1 (en) |
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- 1994-05-23 DE DE69435217T patent/DE69435217D1/en not_active Expired - Lifetime
- 1994-05-23 WO PCT/US1994/005814 patent/WO1994027504A1/en active IP Right Grant
- 1994-05-23 AU AU69565/94A patent/AU681674B2/en not_active Expired
- 1994-05-23 EP EP01129315A patent/EP1205148B1/en not_active Expired - Lifetime
- 1994-05-23 DE DE69431595T patent/DE69431595T3/en not_active Expired - Lifetime
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DE69431595T3 (en) | 2009-07-09 |
EP0702529A4 (en) | 1996-12-04 |
CA2162402A1 (en) | 1994-12-08 |
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EP0702529A1 (en) | 1996-03-27 |
HK1046837A1 (en) | 2003-01-30 |
US5601604A (en) | 1997-02-11 |
AU6956594A (en) | 1994-12-20 |
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