US5007900A
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US
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Percutaneous endoscopic gastrostomy device
Assignee: Boston Scientific Corp
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Filing: 1989-10-31
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Granted: 1991-04-16
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Expires: 2009-10-31
Abstract
Abstract A gastrostomy device that may be placed either endoscopically or percutaneously is disclosed. The catheter is a resilient tube with a resilient T-bar at one end. One wing of the T is provided with a pocket for the tip of an obturator rod. By inserting the rod in the pocket and orienting the rod along the tube, the bar is forced to a position in-line with the tube. The catheter may then be easily inserted into an established stoma. When the rod is removed, the bar returns to its orthogonal position, thereby retaining the catheter within the stomach. The device may be provided with a cup-shaped bolster whose mouth engages the skin about, but not adjacent to, the stoma to hold the bar snugly against the stomach wall. By providing the bolster with air vents, healing of the stoma is encouraged. By providing the device with two diametrically opposed pockets in the T-bar, a forked obturator may be used to fold both wings into a forward oriented, small axial cross section configuration for insertion into a stoma.
Inventors
- 👤 George J. Picha
- 👤 Dean J. Secrest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 15:59
CPC Classifications
A; A61; A61J; A61J15/00; A61J15/0015; A61J15/0026; A61J15/003; A61J15/0034; A61J15/0038; A61J15/0053; A61J15/0061; A61M; A61M25/00; A61M25/01; A61M25/02; A61M2025/0213; A61M2025/0233
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
109 words
A catheter insertable into a passage through a wall using a rod having a tip, said catheter comprising: a resilient tube having a distal end, a central axis and a proximal end; a pair of resilient diametrically opposed, oppositely extending wings connected about the distal end; and a pocket in at least one of said wings, said pocket being spaced radially outward from the central axis of said tube and being adapted to receive the tip of the rod, whereby the pair of wings may be urged to a position collateral with the tube by inserting the tip in the pocket and orienting the rod collateral with the tube.
Claim 2
Dependent Claim
109 words
A catheter insertable into a passage through a wall using a rod having a tip, said catheter comprising: a resilient tube having a distal end, a central axis and a proximal end; a pair of resilient diametrically opposed, oppositely extending wings connected about the distal end; and a pocket in at least one of said wings, said pocket being spaced radially outward from the central axis of said tube and being adapted to receive the tip of the rod, whereby the pair of wings may be urged to a position collateral with the tube by inserting the tip in the pocket and orienting the rod collateral with the tube.
Claim 3
Dependent Claim
15 words
A catheter according to claim 1, wherein said pocket bearing wing tapers to a point.
Claim 4
Dependent Claim
17 words
A catheter according to claim 1, wherein said pocket extends radially outward within the pocket bearing wing.
Claim 5
Dependent Claim
34 words
A catheter according to claim 1, further comprising a one-way valve connected about the distal end, said valve being adapted to prevent a flow of fluid from said distal end to said proximal end.
Claim 6
Dependent Claim
13 words
A catheter according to claim 4, wherein said valve is a flapper valve.
Claim 7
Dependent Claim
13 words
A catheter according to claim 4, wherein said valve is a duck-bill valve.
Claim 8
Dependent Claim
54 words
A catheter according to claim 1, further comprising resilient flange means connected about the proximal end, the axial distance between the pair of wings and the flange means substantially corresponding to the length of said passage, whereby the wall may be retained about the tube between said pair of wings and said flange means.
Claim 9
Dependent Claim
21 words
A catheter according to claim 7, wherein said flange means comprises a pair of diametrically spaced, oppositely extending, substantially flat wings.
Claim 10
Dependent Claim
50 words
A catheter according to claim 8, further comprising a plug connected to the radially outer end of one of said wings by a flexible membrane which permits said plug to be inserted into the proximal end of the tube to close off the proximal end and removed therefrom as desired.
Claim 11
Dependent Claim
89 words
A catheter according to claim 1, further comprising a cupped resilient member having: a mouth; a central aperture, said aperture being expandable to slide onto the proximal end and along said tube and being contractible to grip said tube when released; and at least one vent hole between said aperture and said mouth, whereby the mouth of the member may be urged against the wall about the passage but spaced radially away therefrom and air may enter the vent hole and circulate within said member immediately adjacent said passage.
Claim 12
Dependent Claim
91 words
A bolster for retaining a catheter in a passage through a wall, said bolster comprising a cupped resilient member having: a mouth; a central aperture, said aperture being expandable to slide about said catheter and being contractible to grip said catheter when released; and at least one vent hole between said aperture and said mouth, whereby the mouth of the member may be urged against the wall about the passage but spaced radially away therefrom and air may enter the vent hole and circulate within said member immediately adjacent said passage.
Claim 13
Dependent Claim
91 words
A bolster for retaining a catheter in a passage through a wall, said bolster comprising a cupped resilient member having: a mouth; a central aperture, said aperture being expandable to slide about said catheter and being contractible to grip said catheter when released; and at least one vent hole between said aperture and said mouth, whereby the mouth of the member may be urged against the wall about the passage but spaced radially away therefrom and air may enter the vent hole and circulate within said member immediately adjacent said passage.
Claim 14
Independent Claim
110 words
A method for placement of a catheter into a passage using a rod having a tip, said catheter having a resilient tube having a proximal end and a distal end, a resilient retaining means connected about the distal end, and a pocket in said retaining means, said pocket being spaced radially outward from said tube and being adapted to receive the tip of the rod, the method comprising: inserting the tip of the rod into the pocket; orienting the rod collateral with the tube, thereby orienting the retaining means collateral with the tube; and inserting the retaining means along with a portion of the tube and rod into the passage.
Claim 15
Independent Claim
110 words
A method for placement of a catheter into a passage using a rod having a tip, said catheter having a resilient tube having a proximal end and a distal end, a resilient retaining means connected about the distal end, and a pocket in said retaining means, said pocket being spaced radially outward from said tube and being adapted to receive the tip of the rod, the method comprising: inserting the tip of the rod into the pocket; orienting the rod collateral with the tube, thereby orienting the retaining means collateral with the tube; and inserting the retaining means along with a portion of the tube and rod into the passage.
Claim 16
Dependent Claim
104 words
A catheter insertable into a passage through a wall using a rod having a two-pronged forked tip, said catheter comprising: a resilient tube having a distal end and a proximal end; a resilient retaining means connected about the distal end; and a pair of pockets in said retaining means, said pockets being spaced radially outward in opposite directions from said tube and being adapted to receive said prongs, whereby said retaining means be urged to a folded position generally collateral with the tube and extending beyond the distal end by inserting the prongs in respective pockets and orienting the rod collateral with the tube.
Claim 17
Dependent Claim
104 words
A catheter insertable into a passage through a wall using a rod having a two-pronged forked tip, said catheter comprising: a resilient tube having a distal end and a proximal end; a resilient retaining means connected about the distal end; and a pair of pockets in said retaining means, said pockets being spaced radially outward in opposite directions from said tube and being adapted to receive said prongs, whereby said retaining means be urged to a folded position generally collateral with the tube and extending beyond the distal end by inserting the prongs in respective pockets and orienting the rod collateral with the tube.
Claim 18
Dependent Claim
13 words
A catheter according to claim 13, wherein said retaining means is substantially flat.
Claim 19
Dependent Claim
25 words
A catheter according to claim 14, wherein said retaining means comprises a pair of diametrically spaced, oppositely extending wings, each bearing one of said pockets.
Claim 20
Dependent Claim
13 words
A catheter according to claim 15, wherein said wings taper to a point.
Claim 21
Dependent Claim
16 words
A catheter according to claim 13, wherein said pockets extend radially outward within the retaining means.
Claim 22
Dependent Claim
34 words
A catheter according to claim 13, further comprising a one-way valve connected about the distal end, said valve being adapted to prevent a flow of fluid from said distal end to said proximal end.
Claim 23
Dependent Claim
13 words
A catheter according to claim 18, wherein said valve is a flapper valve.
Claim 24
Dependent Claim
13 words
A catheter according to claim 18, wherein said valve is a duck-bill valve.
Claim 25
Dependent Claim
52 words
A catheter according to claim 13, further comprising resilient flange means connected about the proximal end, the axial distance between the retaining means and the flange means substantially corresponding to the length of said passage, whereby the wall may be retained about the tube between said retaining means and said flange means.
Claim 26
Dependent Claim
21 words
A catheter according to claim 21, wherein said flange means comprises a pair of diametrically spaced, oppositely extending, substantially flat wings.
Claim 27
Dependent Claim
50 words
A catheter according to claim 22, further comprising a plug connected to the radially outer end of one of said wings by a flexible membrane which permits said plug to be inserted into the proximal end of the tube to close off the proximal end and removed therefrom as desired.
Claim 28
Dependent Claim
89 words
A catheter according to claim 13, further comprising a cupped resilient member having: a mouth; a central aperture, said aperture being expandable to slide onto the proximal end and along said tube and being contractible to grip said tube when released; and at least one vent hole between said aperture and said mouth, whereby the mouth of the member may be urged against the wall about the passage but spaced radially away therefrom and air may enter the vent hole and circulate within said member immediately adjacent said passage.
Claim 29
Independent Claim
125 words
A method for placement of a catheter into a passage using a rod having a two-pronged forked tip, said catheter having a resilient tube having a proximal end and a distal end, a resilient retaining means connected about the distal end, and a pair of pockets in said retaining means, said pockets being spaced radially outward in opposite directions from said tube and being adapted to receive said prongs, the method comprising: inserting the prongs into respective pockets, thereby urging said retaining means to a folded position extending beyond the distal end; orienting the rod collateral with the tube, thereby orienting the retaining means collateral with the tube; and inserting the retaining means along with a portion of the tube and rod into the passage.
Claim 30
Independent Claim
125 words
A method for placement of a catheter into a passage using a rod having a two-pronged forked tip, said catheter having a resilient tube having a proximal end and a distal end, a resilient retaining means connected about the distal end, and a pair of pockets in said retaining means, said pockets being spaced radially outward in opposite directions from said tube and being adapted to receive said prongs, the method comprising: inserting the prongs into respective pockets, thereby urging said retaining means to a folded position extending beyond the distal end; orienting the rod collateral with the tube, thereby orienting the retaining means collateral with the tube; and inserting the retaining means along with a portion of the tube and rod into the passage.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-04-15 | 1994-10-15 | 1995-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-15 | 1998-10-15 | 1999-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-15 | 2002-10-15 | 2003-04-16 | $7700.00 | Window Closed / Lapsed |