US20050107757A1 - Medical vacuum aspiration device - Google Patents
Medical vacuum aspiration device Download PDFInfo
- Publication number
- US20050107757A1 US20050107757A1 US10/712,265 US71226503A US2005107757A1 US 20050107757 A1 US20050107757 A1 US 20050107757A1 US 71226503 A US71226503 A US 71226503A US 2005107757 A1 US2005107757 A1 US 2005107757A1
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- United States
- Prior art keywords
- housing
- fluid conduit
- medical vacuum
- aspiration device
- conduit
- 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.)
- Abandoned
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Classifications
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- 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
- A61M1/71—Suction drainage systems
- A61M1/74—Suction control
- A61M1/741—Suction control with means for varying suction manually
- A61M1/7413—Suction control with means for varying suction manually by changing the cross-section of the line
-
- 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
- A61M1/64—Containers with integrated suction means
- A61M1/67—Containers incorporating a piston-type member to create suction, e.g. syringes
-
- 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
- A61M1/71—Suction drainage systems
- A61M1/74—Suction control
- A61M1/741—Suction control with means for varying suction manually
- A61M1/7413—Suction control with means for varying suction manually by changing the cross-section of the line
- A61M1/7415—Suction control with means for varying suction manually by changing the cross-section of the line by deformation of the fluid passage
Abstract
A medical vacuum aspiration device includes an aspiration cylinder and a valve. The valve includes a removable fluid conduit, a valve housing having at least first and second housing portions, means for removably attaching the first housing portion to the second housing portion, and an actuator. The removable fluid conduit has a first end for attaching to a cannula and a second end for attaching to the aspiration cylinder. The first and second housing portions may define a cavity for removably holding at least a portion of the fluid conduit. The actuator is coupled to the valve housing and selectively compresses a portion of the fluid conduit to open and close a fluid path defined by the fluid conduit.
Description
- The present invention relates to a medical vacuum aspiration device (MVA). In general, it is more economical for MVAs to be used multiple times before they are disposed. Between uses, the MVA should be sterilized and/or disinfected. However, the materials chosen for the components of the MVA may be susceptible to degradation and/or damage by certain sterilization procedures and disinfectants. For example, latex components of the MVA can oxidize in an autoclave and certain plastic components can melt in an autoclave or degrade in the presence of chemical disinfectants.
- Some MVAs are difficult to adequately clean and sterilize because they cannot be disassembled sufficiently. Other MVAs can include multiple parts that can be disassembled for sterilizing and disinfecting. However, the parts are easily misplaced or lost when disassembled. Further, a plurality of interfaces must be provided between each of the parts in order to connect the parts together and provide proper sealing to maintain the vacuum in the fluid path extending through the MVA. The plurality of interfaces can harbor tissue and fluid that can be difficult to remove during the sterilizing and disinfecting procedures. There remains a need for an MVA that is economical, safe, effective, and easily cleaned and sterilized.
- There is provided an MVA that is easily cleaned and sterilized.
- There is provided an MVA that is less susceptible to material degradation.
- There is provided an MVA that can be used safely.
- There is provided an MVA that can be made and used economically.
- There is provided an MVA that can maintain the vacuum seal along the entire fluid path of the MVA.
- There is provided an MVA that can be easy and comfortable to grasp and operate by a user.
- There is also provided a medical vacuum aspiration device including an aspiration cylinder and a valve. The valve includes a removable fluid conduit, a valve housing having at least first and second housing portions, means for removably attaching the first housing portion to the second housing portion, and an actuator. The removable fluid conduit can have a first end for attaching to a cannula and a second end for attaching to the aspiration cylinder. The first and second housing portions may define a cavity for removably holding at least a portion of the fluid conduit. The actuator can be coupled to the valve housing and selectively compresses a portion of the fluid conduit to open and close a fluid path defined by the fluid conduit.
- There is yet also provided a medical vacuum aspiration device including an aspiration cylinder and a valve adapted for fluid communication with the aspiration cylinder. The valve includes first and second housing portions, a releasable connector, a fluid conduit and at least one conduit clamp. The first and second housing portions each include inner and outer walls. The releasable connector joins the first housing portion to the second housing portion such that the first housing portion and the second housing can cooperate to define a housing having first and second open ends and a cavity defined by the inner walls and extending between the first and second open ends. The fluid conduit can be retained in the cavity when the first and second housing portions are joined by the releasable connector. The fluid conduit can be exposed for removal from the cavity when the releasable connector is released. The fluid conduit can include a flexible conduit portion. The at least one conduit clamp can be movably mounted on one of the housing portions and engagable with the flexible conduit portion to compress the conduit portion.
- The accompanying drawings, which are incorporated herein and constitute part of this specification, illustrate an embodiment of the invention, and, together with the general description given above and the detailed description given below, serve to explain the features of the invention.
-
FIG. 1 is a perspective view of an exemplary embodiment of an medical vacuum aspiration device according to the invention. -
FIG. 2 is perspective view of a valve of the medical vacuum aspiration device according toFIG. 1 . -
FIG. 3 is a plan view of a housing of the valve according toFIG. 2 with the housing in the opened position and the fluid conduit exposed. -
FIG. 4 is a plan view of the inside of the housing according toFIG. 3 with the fluid conduit removed. -
FIG. 5 is a perspective view of the outside of the housing according toFIG. 4 . -
FIG. 6 is an end view of the housing according toFIG. 4 . -
FIGS. 7 and 8 are perspective views of the fluid conduit according toFIG. 3 . -
FIG. 9 is a perspective view of a cap according toFIG. 2 . -
FIG. 10 is a perspective view of a button face of a button for opening and closing the valve according to theFIG. 2 . -
FIG. 11 is a perspective view of a clamp stem of a button for opening and closing the valve according to theFIG. 2 . -
FIG. 12 is a perspective view of the aspiration cylinder of the medical vacuum aspiration device according toFIG. 1 . -
FIG. 13 is a perspective view of a collection tube of the aspiration cylinder according toFIG. 12 . -
FIG. 14 is a perspective view of a plunger stop of the aspiration cylinder according toFIG. 12 . -
FIG. 15 is a perspective view of the cannula of the medical vacuum aspiration device according toFIG. 1 . -
FIG. 1 illustrates an exemplary embodiment of a medical vacuum aspiration device (MVA) 10. The MVA 10 may include acannula 100, avalve 200, and anaspirator cylinder 300. Thecannula 100 removably connects to a first opening ofvalve 200 and theaspirator cylinder 300 removably connects to a second opening of thevalve 200. Thevalve 200 opens and closes fluid communication between thecannula 100 and theaspirator cylinder 300. - Referring to
FIGS. 2 and 3 , thevalve 200 may include ahousing 202, acap 204,buttons 206, and afluid conduit 208. Thehousing 202 includes first andsecond fluid openings 210, 212 into which thecannula 100 and theaspirator cylinder 300, respectively, are inserted. Thehousing 202 can be opened to permit access to and removal of thefluid conduit 208. As shown inFIG. 3 , an interior ofhousing 202 receives at least part of thefluid conduit 208. According to one embodiment, each end of thefluid conduit 208 extends outward beyond the respective ends of thehousing 202. However, in other embodiments thehousing 202 may receive the entirety of thefluid conduit 208. Thehousing 202 may include alignment and retention features that cooperate with features of thefluid conduit 208 to properly orient and seat thefluid conduit 208 relative to thehousing 202. As shown inFIG. 2 , thecap 204 may be connected to one end of thehousing 202 and can extend over one of the ends of thefluid conduit 208. Thecap 204 can be used to reinforce thehousing 202 andfluid conduit 208 against deflection that may occur if the cannula is rocked back and forth during use. However, thecap 204 may be omitted fromMVAs 10 if such additional reinforcement is not necessary or useful, or is provided by other structural features. Referring toFIG. 1 , one end of thefluid conduit 208 can sealingly receive one end of theaspirator cylinder 300 and the other end of thefluid conduit 208 can sealingly receive thecannula 100. However, one or more adapters and/or fluid segments may be provided between thefluid conduit 208 and thecannula 100 and/or theaspirator cylinder 300. Referring toFIG. 2 ,buttons 206 are movably mounted on thehousing 202 to engage and disengage thefluid conduit 208 to close and open, respectively, fluid communication between thecannula 100 and theaspirator cylinder 300, as will be explained later. - Referring to
FIGS. 2 and 4 -6, thehousing 202 may include first andsecond housing walls housing walls inner surface outer surface FIGS. 2 and 3 , theinner surfaces fluid conduit 208 is received and retained. Theouter surfaces outer surfaces FIGS. 3 and 5 , theouter surfaces concave portions concave portions outer surfaces buttons 206 with ergonomic comfort for the user. As shown inFIGS. 2, 4 and 5, thehousing 202 may be generally circular in transverse cross-section, except along the concave portions, and can have a first end that is larger in diameter than a second end. The generally ovoid shape and theconcave portions outer surfaces - As note above, the
outer surfaces housing walls - A releasable connector can permit the
housing walls fluid conduit 208 and taken apart to expose thefluid conduit 208. Thehousing walls hinge straps latch 226, as illustrated inFIGS. 4-6 , so that thehousing walls outer surfaces engaging edges housing walls end portions 232, 234 (FIG. 6 ). The hinge straps 222, 224 enable one housing wall to pivot relative to the other housing wall. Thus, thehousing walls FIG. 2 ) or opened way from each other to expose thefluid conduit 208 for removal from the valve 200 (FIG. 3 ) for sterilizing, disinfecting and/or replacement by anotherfluid conduit 208. - As shown in
FIGS. 4 and 6 , the hinge straps 222, 224 include livinghinge portions end portions central portions FIG. 6 , the livinghinge portions central portions portions hinge portions FIG. 4 , the mating edges 228, 228′, 230, 230′ of thehousing walls housing 202. Preferably, the hinge straps 222, 224 are equidistantly spaced on either side of the apexes of the edges. The double pivot hinges sufficiently space the apexes from each other when thehousing walls outer surfaces housing 202 is closed and minimize interference with a user's hand. The reduced thickness portions elastically deform and can accommodate repeated bending. - Although two hinge straps are shown, any number of hinge straps can be used as dictated by the shape of the edges of the housing walls. Additionally, other arrangements can be used with or in place of the hinge straps, such as hinge pins or a single living hinge radially spaced from the outer surface by a flange extending from each of the housing walls. While the housing walls have been described as pivoting relative to each other, in the alternative or in addition, other arrangements are also possible that permit rotational and/or translational movement. Also, the housing walls can be releasibly connected together, such as by one or more screws, notches, threads, latches, snaps, pins, clasps, protrusions, indentions, tabs, clips, or other fasteners or combinations thereof, for example, or may be permanently connected by, for example, adhesives, welding or heat staking. Alternatively, the housing could be formed as a continuous one-piece housing that does require further assembly to complete the housing. The fluid conduit can be inserted in the continuous one-piece housing along the longitudinal axis of the housing and the ends of the fluid conduit can be rolled back over the ends of the housing.
- Referring to
FIGS. 2 and 4 -6, the latch includes atab recess 244 in theouter surface 218′ of thesecond housing wall 214′ and alatching tab 246 extending from theedge 228 of thefirst housing wall 214. Preferably, thetab recess 244 and thelatching tab 246 can be located on theouter surfaces respective housing portions FIG. 5 , thelatching tab 246 includes recesses 248 (only one is visible) that receiveramps tab recess 244 so that thelatching tab 248 snaps into engagement with thetab recess 244 to secure thefirst housing wall 214 to thesecond housing wall 214′. In one embodiment, thelatching tab 246 extends continuously from theouter surface 218 of thefirst housing wall 214 and lies substantially flush with theouter surface 218′ of thesecond housing wall 214′, as illustrated inFIGS. 2 and 6 . InFIG. 2 , thelatching tab 246 includes apartial dome portion 254 that cooperates with a semicircular extension 256 (FIGS. 2 and 5 ) of therecess 244 to define a space for receiving a user's finger so that the user can disengage thelatching tab 246 from therecess 244 and open thehousing walls - In one embodiment, the
latch 226, hinge straps 222, 224 andhousing walls latch 226, hinge straps 222, 224 andhousing walls - Referring to
FIG. 4 , thehousing walls conduit support walls conduit support walls button extensions conduit support ribs second lips inner surfaces Arcuate walls conduit support walls conduit support ribs first lips conduit support walls button extension arcuate walls conduit support ribs second lips - The
conduit support walls second support ribs button extensions conduit support walls conduit support walls inner surfaces convex portions concave portions FIG. 4 , thebutton extensions convex portions conduit support walls button extensions arcuate recesses fluid conduit 208 within thehousing 202. Theconduit support ribs conduit support walls button extensions fluid conduit 208 inside the cavity of thehousing 202. - Referring to
FIG. 7 , thefluid conduit 208 can include a first mountingportion 281, a second mountingportion 282 and aconduit portion 283 connected between and in fluid communication with the first and second mountingportions FIGS. 7 and 8 , the first and second mountingportions second receptacles 284, 285. According to one embodiment, thecannula 100 may be inserted into the first receptacle 284 in a fluid tight manner and theaspiration cylinder 300 may be inserted into thesecond receptacle 285 in a fluid tight manner. The first mountingportion 281 and theconduit portion 283 include fluid passages in fluid communication with each other and in fluid communication with the respective first andsecond receptacles 284, 285. The first and second mountingportions conduit portion 283 can be cylindrical and coaxially aligned, with the outer diameter of the second mountingportion 282 being greater than the outer diameter of theconduit portion 283 and the first mountingportion 281. - Referring to
FIGS. 3 and 4 , the inner 286, 286′ surfaces of thearcuate walls portion 281 and theinner surfaces housing walls housing 202 for receiving the second mountingportion 282. Theinner surfaces arcuate walls inner surfaces housing walls housing 202 may be complimentary in size and shape to the first and second mountingportions - As shown in
FIG. 7 , the first mountingportion 281 can include a first circular flange 287, the second mountingportion 282 can include a secondcircular flange 288, and theconduit portion 283 can include a third circular flange 289 (FIG. 4 ). The first circular flange 287 can be located at the junction of the first mountingportion 281 and theconduit portion 283, the secondcircular flange 288 can be located at the junction of the second mountingportion 282 and theconduit portion 283, and the thirdcircular flange 289 can be located intermediate the first and secondcircular flanges 287, 288 and closer to the secondcircular flange 288 than to the first circular flange 287. The first mountingportion 281 can include afirst ring 290 at the first end of thefluid conduit 208 and anintermediate ring 291 between thefirst ring 290 and the first circular flange 287. Thesecond mounting portion 282 can includesecond ring 292 at the second end of thefluid conduit 208 andthird ring 293 spaced inwardly from thesecond ring 292. Thefirst ring 290 cooperates with theinner surfaces lips arcuate walls housing 202 and thefluid conduit 208 that can accommodate different sizes of cannulae. Theribs arcuate walls arcuate walls rings inner surfaces lips housing walls housing 202 and thefluid conduit 208 that can promote the vacuum seal between thevalve 200 and theaspirator cylinder 300. Alternatively, separate sealing devices, such as O-rings, can be affixed to one or both of theaspirator cylinder 300 and the fluid conduit to form a fluid tight seal between theaspirator cylinder 300 and the fluid conduit, as will be explained below. - Referring to
FIG. 3 , thefluid conduit 208 can be mounted in thehousing 202 with the first mountingportion 281 located adjacent the first ends of thehousing walls portion 282 located adjacent the second ends of thehousing walls fluid conduit 208 can be received in thehousing walls conduit support walls conduit support walls circular flanges circular flanges conduit support walls fluid conduit 208 longitudinally within thehousing 202. The arcuate recesses 276, 276′ 278 a, 278 a′, 278 b′, 278 b′, 280, 280′ in theconduit support walls button extensions conduit portion 283 and center theconduit portion 283 coaxially about the longitudinal axis of thehousing walls second support ribs portion 282 at a position intermediate thethird ring 293 and the secondcircular flange 288. - The
fluid conduit 208 can include firstradial flanges radial flanges portion 282. For example, as shown inFIG. 8 , the firstradial flanges radial flanges FIG. 7 , the firstradial flanges first ring 290 to the first circular flange 287 and the secondradial flanges second ring 292 to thethird ring 293. Referring toFIGS. 3-5 , the edges of thearcuate walls housing 202 when thehousing walls radial flanges housing 202 can include secondlongitudinal openings housing walls longitudinal openings radial flanges housing 202 during insertion of thecannula 100 and theaspiration cylinder 300. Although one embodiment can have two pairs of radial flanges and longitudinal openings, any number of flanges and openings can be used. Also, other features such as interlocking gear features can be used instead of the flanges and longitudinal openings to reduce rotation of the fluid conduit. - The
fluid conduit 208 shown inFIGS. 3, 7 and 8 may be integrally formed as a single component having a continuous fluid passage therethrough. The singlecomponent fluid conduit 208 can be made from any suitable resilient material, such as silicone, that can withstand repeated sterilizing by autoclaving and/or chemical treatment. - Referring to
FIG. 9 , thecap 204 can be removably connected to thehousing 202 over thearcuate walls portion 281. Thecap 204 can cooperate with thearcuate walls latch 226 to retain thehousing walls FIG. 2 ). Thecap 204 may encircle botharcuate walls housing walls housing 202 that can be caused by movement of thecannula 100 during use of the medicalvacuum aspiration device 10. - The
cap 204 may include first and second ends, inner and outer surfaces (e.g., having generally frustoconical shapes), andarms 204 a extending outwardly from the outer surface. The inner surface of thecap 204 may be complimentary in size and shape to thearcuate walls portion 281. Thearms 204 a includechannels 204 b that open to the inner surface of thecap 204 and can receive the firstradial flanges fluid conduit 208. Thearms 204 a can cooperate with the firstradial flanges portion 281 relative to thehousing 202 during insertion of thecannula 100 into the first mountingportion 281. - As shown in
FIG. 2 , the first end of thecap 204 can include arounded lip 204 c. Thefirst ring 290 can be located between and engaged by therounded lip 204 c and the ends of thearcuate walls rounded lip 204 c at least partially overlaps thefirst ring 290. - The
cap 204 includes features for removably connecting thecap 204 to thehousing walls cap 204 can include acircumferential groove 204 d extending between thechannels 204 b proximate the second end of thecap 204. Thecircumferential groove 204 d can receiveramps FIG. 5 ) extending from the outer surfaces of thearcuate walls groove 204 d can cooperate with theramps cap 204 and thearcuate walls cap 204 can be removably connected to thehousing walls cap 204 can include diametricallyopposed recess 204 e that can receive diametricallyopposed tabs FIG. 5 ) extending radially from the outer surface of thearcuate walls recesses 204 e can cooperate with thetabs cap 204 relative to thehousing 202. - Referring to
FIGS. 3 and 5 , thehousing walls button openings buttons 206 extend into thehousing 202 and can engage thefluid conduit 208. Preferably, thebutton extensions recesses button extensions inside surface housing walls recesses buttons 206 to locate, guide and restrain thebuttons 206 within thehousing 202.Pins 262 d can extend frombutton extension 262′ of the second housing wall 2124′ and engageblind holes 262 e in thebutton extension 262 of thefirst housing wall 214 when thehousing walls pins 262 d can cooperate with theblind holes 262 e to ensure proper alignment of thebutton extensions housing walls - Referring to
FIGS. 10 and 11 , thebuttons 206 can include abutton face 206 a (FIG. 10 ) and aclamp stem 206 b (FIG. 11 ). As shown inFIGS. 2 and 10 , thebutton face 206 a can provide an interface for receiving a user's finger to effect opening and closing of thevalve 200. The button face 206 a is positioned external to thehousing 202 for actuation by a user can so that thevalve 200 can be selectively opened and closed. The button face 206 a can be oval in shape and can include a concave contact surface for engagement by a user's finger. Alternatively, other shapes for thebutton face 206 a can be used, such as rectangular, convex, and planar. Preferably, the button faces 206 a can be separate components from the respective clamp stems 206 b and can be made larger than thebutton openings button openings housing 202. The button faces 206 a can be connected to one end the respective clamp stems 206 b by any conventional fastening methods, such as welding, adhesives or fasteners. Apost 206 c may extend from the bottoms of the button faces 206 a and be received in respectiveblind holes 206 d formed in the clamp stems 206 b, as shown inFIG. 11 . - To assemble the
buttons 206 in thehousing walls button openings outer surface housing walls button openings inner surfaces housing walls button openings posts 206 c can be inserted to theblind holes 206 d. The button faces 206 a and the clamp stems 206 b can be secured together, for example, by adhesives or welding. - The clamp stems 206 b can extend through the
respective button openings housing walls respective button extensions button openings - Referring to
FIG. 11 , aconduit clamp 206 e can be connected to the other end of theclamp stem 206 b. Theconduit clamp 206 e may include a wedge-shaped transverse cross-section. Theconduit portion 283 of thefluid conduit 208 includes a resilient portion that is engaged by the conduit clamps 206 e. The conduit clamps 206 e are biased to an opened position by the resilient portion of theconduit portion 283 and movable by a user pushing the button faces 206 a toward the resilient portion against the bias of the resilient portion to move the conduit clamps 206 e to a closed position. Therecesses clamps 206 e move between the closed and opened positions. The button mechanism can be designed to provide either a normallyopen valve 200 or a normally closedvalve 200. - Preferably the clamp stems 206 b and the conduit clamps 206 e are integrally formed from any material that can withstand repeated sterilizing by autoclaving and/or chemical disinfecting. The button faces 206 a, clamp stems 206 b and conduit clamps 206 e can be formed from any suitable a material that can withstand repeated conventional sterilizing and cleaning procedures (e.g., autoclaving and chemical disinfectants), such as polyethermide, polyoxyethylene copolymer, polysulfones (e.g., polyphenylsulfone and polyethersulfone), polyethermide, and polymethyl pentene. In the preferred embodiment, the button faces 206 a, the clamp stems 206 b and the conduit claims 206 e are made from polyethermide or polyoxyethylene. The conduit clamps 206 e can have ends that extend transversely beyond the transverse width of the
openings inner surface housing walls recesses buttons 206 by displacing thebuttons 206 outwardly of thehousing 202. The stop faces 206 f can cooperate withinner surface outer surfaces housing walls buttons 206 in thebutton openings 206 when the housing is closed or opened. - To close the
valve 200, a user pushes on thebuttons 206 inwardly toward thehousing 202 to move the conduit clamps 206 e to compress the resilient portion of theconduit portion 283 against the bias of the resilient portion and collapse the fluid passage of theconduit portion 283. Thevalve 200 is in the closed position when the fluid passage is collapsed. Preferably, thebuttons 206 can be diametrically opposed and the conduit clamps 206 e clamp the resilient portion between them. - The
buttons 206 may be set to lock thevalve 200 in a closed position. For example, a lockingprojection 206 g can extend away from thestem 206 b and engage arespective recess button extensions buttons 206 in the valve closed position against the bias of the resilient portion of theconduit portion 283. After thebuttons 206 have been moved to the valve closed position, the user may push thebuttons 206 longitudinally toward the first end of thehousing 202 until the lockingprojections 206 g extend fully into therecesses conduit portion 283 pushes theprojections 206 g into engagement with theinner surface housing wall buttons 206 in the valve closed position. In order to release thebuttons 206 from the valve closed position and return thebuttons 206 to the valve opened position, the user may pull thebuttons 206 toward the second end of thehousing 202 to disengage the lockingprojections 206 g from therecesses conduit portion 283 pushes thebuttons 206 outward from theconduit portion 283, returns thebuttons 206 to the valve opened position, and opens the fluid passageway of theconduit portion 283. - Although an embodiment in which two buttons collapse the fluid passageway is described above, it should be understood that a single button can be used to collapse the fluid passageway. Alternatively, the buttons can include pivoting links, gears, springs or combinations thereof.
- In the embodiment illustrated in
FIGS. 1 and 12 , theaspiration cylinder 300 is in the form of a syringe 302. Alternatively, theaspiration cylinder 300 can be any one of a variety of components in which a vacuum can be drawn, such as, an electric vacuum pump or a type of manual vacuum pump manual that is different from theaspiration cylinder 300. The syringe 302 can include acollection tube 304, aplunger 306 slidably received in the collection tube and ahandle 308 connected to theplunger 306. - Referring to
FIGS. 12 and 13 , thecollection tube 304 may cylindrical and can include two open ends. Afirst end 322 of thecollection tube 304 can be inserted into the second end of thehousing 200 to engage the base of thesecond receptacle 285 of the fluid conduit. The base of the receptacle and thefirst end 322 of thecollection tube 304 cooperate to form a vacuum seal therebetween. Anelongate flange 312 can be mounted at one end of thecollection tube 304. Theelongate flange 312 can provide a grip for a user when thehandle 308 is displaced by the user. Mounting rings 314, 316 can be located proximate the other end of thecollection tube 304. The mounting rings 314, 316 can reduce the surface area of thecollection tube 304 that contacts thesecond receptacle 285 during insertion and removal of thetube 304, thereby, reducing the insertion and removal forces. The mounting rings 314, 316 can cooperate with the inner surface of thesecond receptacle 285 in the second mountingportion 282 of thefluid conduit 208 to provide a secondary vacuum seal between thevalve 200 and the collection tube 302. - Referring to
FIG. 12 , theplunger 306 can include an O-ring 310 that cooperates with the inner surface of thecollection tube 304 to form a fluid seal between theplunger 306 and thecollection tube 304. Alternatively, a plunger tip such as that commonly used on smaller syringes could be used in place of the O-ring. - Referring to
FIGS. 12 and 14 , aplunger stop 318 can be connected to thecollection tube 304 proximate theelongate flange 312. Theplunger stop 318 can include an arcuate body having two free ends and two projections 324 (FIG. 14 ). Theprojections 324 can extend from the arcuate body proximate the free ends and can pass through respective holes 326 (FIG. 13 ) in the side of thecollection tube 304. Preferably, theplunger 306 contacts theprojections 324 to prevent removal of theplunger 306 from inside thecollection tube 304. When thevalve 200 is closed, a vacuum can be drawn in thecollection tube 304 by displacing theplunger 306 toward theflange 312. Thevalve 200 may then be opened to create suction at the end of thecannula 100. A retainingclip 328 can extend from theelongate flange 312 and over theplunger stop 318. The retaining clip can hold the plunger stop on thecollection tube 304 when theprojections 324 are removed from theholes 326. Theretainer clip 328 and theflange 312 can be integrally formed. - As shown in
FIGS. 12 and 13 , theplunger 306 can include lock faces 330 that can expand radially outward when theplunger 306 is displaced toward thesecond end 332 of thetube 304 and engage arim 334 at thesecond end 332. The lock faces 330 cooperate with the rim to retain theplunger 306 adjacent thesecond end 332. - It should be appreciated that other structure for generating a vacuum can be used in connection with the
valve 200 described herein. For example, thecollection tube 304 may be evacuated with a pump. -
FIGS. 1 and 15 illustrate acannula 100 that is consistent with the invention. it should be understood that other cannula designs can be used. - While the present invention has been disclosed with reference to certain embodiments, numerous modifications, alterations and changes to the described embodiments are possible without departing from the sphere and scope of the present invention, as defined in the appended claims. Accordingly, it is intended that the present invention not be limited to the described embodiments, but that it has the full scope defined by the language of the following claims, and equivalents thereof.
Claims (24)
1. A medical vacuum aspiration device comprising:
an aspiration cylinder; and
a valve, the valve comprising:
a removable fluid conduit having a first end for attaching to the aspiration cylinder and a second end for attaching to a cannula;
a valve housing having at least first and second housing portions that define a cavity for removably holding at least a portion of the fluid conduit;
means for removably attaching the first housing portion to the second housing portion; and
an actuator, coupled to the valve housing, that selectively compresses a portion of the fluid conduit to open and close a fluid path defined by the fluid conduit.
2. The medical vacuum aspiration device according to claim 1 , wherein the first and second housing portions and the means for removably attaching comprise a single-piece unit.
3. The medical vacuum aspiration device according to claim 2 , wherein the single-piece unit comprises plastic.
4. The medical vacuum aspiration device according to claim 3 , wherein the plastic comprises polypropylene.
5. The medical vacuum aspiration device according to claim 1 , wherein the fluid conduit further comprises a first receptacle proximate the first end, the first receptacle for receiving an end of the aspiration cylinder to provide a sealed connection between the fluid conduit and the aspiration cylinder.
6. The medical vacuum aspiration device according to claim 5 , wherein the fluid conduit and the first receptacle comprises an integrally formed conduit component such that the fluid passageway extends continuously through the fluid conduit.
7. The medical vacuum aspiration device according to claim 6 , wherein the integrally formed conduit component comprises a resilient material.
8. The medical vacuum aspiration device according to claim 7 , wherein the resilient material comprises silicone.
9. The medical vacuum aspiration device according to claim 1 , wherein the first and second housing portions engage the fluid conduit to restrain movement of the fluid conduit relative to the housing.
10. The medical vacuum aspiration device according to claim 9 , the valve further comprising a cap that connects to the first and second housing portions.
11. The medical vacuum aspiration device according to claim 10 , wherein a portion of the fluid conduit extends outwardly from an end of the housing and the cap extends over the portion of the fluid conduit.
12. The medical vacuum aspiration device according to claim 11 , wherein the cap engages the fluid conduit to restrain movement of the fluid conduit relative to the housing.
13. The medical vacuum aspiration device according to claim 1 , wherein the fluid conduit further comprises a sealing receptacle adapted to cooperate with the aspiration cylinder to provide a fluid seal between the aspiration cylinder and the fluid conduit.
14. The medical vacuum aspiration device according to claim 13 , wherein the sealing receptacle is integrally formed portion of the fluid conduit.
15. A medical vacuum aspiration device comprising:
an aspiration cylinder; and
a valve adapted for fluid communication with the aspiration cylinder, the valve including:
first and second housing portions, each including inner and outer walls;
a releasable connector joining the first housing portion to the second housing portion such that the first housing portion and the second housing cooperate to define a housing having first and second open ends and a cavity defined by the inner walls and extending between the first and second open ends;
a fluid conduit retained in the cavity when the first and second housing portions are joined by the releasable connector, and the fluid conduit exposed for removal from the cavity when the releasable connector is released, the fluid conduit including a flexible conduit portion; and
at least one conduit clamp movably mounted on one of the housing portions and engagable with the flexible conduit portion to compress the conduit portion.
16. The medical vacuum aspiration device according to claim 15 , further comprising a hinge about which the first housing portion pivots relative to the second housing portion.
17. The medical vacuum aspiration device according to claim 16 , wherein the hinge comprises a living hinge.
18. The medical vacuum aspiration device according to claim 17 , wherein the hinge comprises two living hinges integrally formed on the housing portions.
19. The medical vacuum aspiration device according to claim 18 , wherein each of the living hinges comprises a double living hinge.
20. The medical vacuum aspiration device according to claim 16 , wherein the releasable connector comprises a releasable latch.
21. The medical vacuum aspiration device according to claim 20 , wherein the releasable latch comprises a latch tab extending from an edge of one of the housing portions and a tab recess in an outer surface of another one of the housing portions, the tab recess releasably receiving the latch tab when the releasable connector joins the housing portions.
22. The medical vacuum aspiration device according to claim 21 , wherein the latch tab further comprises a dome portion cooperating with the tab recess to define a user interface space.
23. The medical vacuum aspiration device according to claim 22 , wherein the latch tab and tab recess are integrally formed on a respective one of the housing portions.
24. The medical vacuum aspiration device according to claim 15 , wherein the valve further comprising a cap connected to at least one of the first and second ends of the housing.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/712,265 US20050107757A1 (en) | 2003-11-14 | 2003-11-14 | Medical vacuum aspiration device |
ES04782304.2T ES2452692T3 (en) | 2003-11-14 | 2004-08-27 | Medical vacuum aspiration device |
PCT/US2004/027801 WO2005056080A1 (en) | 2003-11-14 | 2004-08-27 | Medical vacuum aspiration device |
EP04782304.2A EP1713526B1 (en) | 2003-11-14 | 2004-08-27 | Medical vacuum aspiration device |
US11/717,727 US7641640B2 (en) | 2003-11-14 | 2007-03-14 | Medical vacuum aspiration device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/712,265 US20050107757A1 (en) | 2003-11-14 | 2003-11-14 | Medical vacuum aspiration device |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/717,727 Continuation US7641640B2 (en) | 2003-11-14 | 2007-03-14 | Medical vacuum aspiration device |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050107757A1 true US20050107757A1 (en) | 2005-05-19 |
Family
ID=34573520
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/712,265 Abandoned US20050107757A1 (en) | 2003-11-14 | 2003-11-14 | Medical vacuum aspiration device |
US11/717,727 Expired - Lifetime US7641640B2 (en) | 2003-11-14 | 2007-03-14 | Medical vacuum aspiration device |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/717,727 Expired - Lifetime US7641640B2 (en) | 2003-11-14 | 2007-03-14 | Medical vacuum aspiration device |
Country Status (4)
Country | Link |
---|---|
US (2) | US20050107757A1 (en) |
EP (1) | EP1713526B1 (en) |
ES (1) | ES2452692T3 (en) |
WO (1) | WO2005056080A1 (en) |
Cited By (3)
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US20070161965A1 (en) * | 2003-11-14 | 2007-07-12 | Ipas | Medical vacuum aspiration device |
WO2013160380A1 (en) * | 2012-04-24 | 2013-10-31 | Dentsply Ih Ab | Apparatus including a conduit clamping device |
US11254846B2 (en) | 2017-05-02 | 2022-02-22 | Lg Chem, Ltd. | Two part adhesive composition |
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WO2009157873A1 (en) * | 2008-06-27 | 2009-12-30 | Singapore Health Services Pte. Ltd. | Haemostatic valve |
EP2246077B1 (en) | 2009-04-30 | 2012-03-28 | Ipas, Inc. | Medical vacuum aspiration device |
US8840595B2 (en) * | 2009-09-17 | 2014-09-23 | Arthrex, Inc. | Removable suction assembly for medical handpieces |
US8840596B2 (en) * | 2009-09-17 | 2014-09-23 | Arthrex, Inc. | Removable suction assembly for medical handpieces |
GB0917447D0 (en) * | 2009-10-06 | 2009-11-18 | Black Timothy R L | Medical apparatus |
US9693896B2 (en) | 2013-03-15 | 2017-07-04 | Novartis Ag | Systems and methods for ocular surgery |
GB2591087B (en) * | 2020-01-08 | 2023-11-29 | Spoke Medical Ltd | Fluid Transfer Device |
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US7641640B2 (en) * | 2003-11-14 | 2010-01-05 | Ipas | Medical vacuum aspiration device |
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US11254846B2 (en) | 2017-05-02 | 2022-02-22 | Lg Chem, Ltd. | Two part adhesive composition |
Also Published As
Publication number | Publication date |
---|---|
ES2452692T3 (en) | 2014-04-02 |
US20070161965A1 (en) | 2007-07-12 |
EP1713526B1 (en) | 2013-12-25 |
EP1713526A1 (en) | 2006-10-25 |
US7641640B2 (en) | 2010-01-05 |
WO2005056080A1 (en) | 2005-06-23 |
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Legal Events
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AS | Assignment |
Owner name: IPAS, NORTH CAROLINA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BURTON, NADINE FERDMAN;MAGUIRE, ELIZABETH SHIRES;LEONARD, ANN HAMILTON;AND OTHERS;REEL/FRAME:015208/0650;SIGNING DATES FROM 20040406 TO 20040408 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |