US6302917B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-reflux esophageal prosthesis
Assignee: Cook Medical Technologies LLC
•
Filing: 1999-08-31
•
Granted: 2001-10-16
•
Expires: 2019-08-31
Abstract
Abstract An esophageal prosthesis (10) for preventing reflux of gastric fluids through the esophagus. The esophageal prosthesis process includes a tubular frame (11) with a sleeve (13) disposed around and longitudinally along the tubular frame as well as extending from the distal end (14) of the frame. The lower portion (28) of the sleeve has a readily collapsible lumen (15) that forms a one-way valve for preventing the reflux of gastric fluids in an antegrade manner through the esophagus. Fluids however readily flow through the sleeve in a antegrade direction. In response to a pressure build up in the stomach of a patient wanting to belch or vomit, the lower portion of the sleeve inverts through the passage (12) of the tubular frame, thereby relieving the pressure build up or voiding the patient's stomach. The tubular frame includes a plurality (19) of self-expanding zig-zag wire stents (20, 21, and 23) that maintain the patency of the esophagus and, in particular, the lower esophageal sphincter and any tumor that is causing stricture of the esophagus.
Inventors
- 👤 Kulwinder S. Dua
- 👤 Scott T. Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:40
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/95; A61F2/958; A61F2/962; A61F2/82; A61F2/86
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
114 words
An anti-reflux esophageal prosthesis ( 10 ) comprising: a tubular frame ( 11 ) having a passage ( 12 ) extending longitudinally therethrough; and a sleeve ( 13 ) disposed around and extending at least partially along said tubular frame, said sleeve extending from an end ( 14 ) of said frame and having a lumen ( 15 ) extending longitudinally therethrough and communicating with said passage of said frame, said sleeve in response to a fluid applying a first pressure in a first direction ( 17 ) passing the fluid through said lumen thereof, said sleeve collapsing in response to a fluid applying a second pressure in a second direction ( 18 ).
Claim 2
Dependent Claim
114 words
An anti-reflux esophageal prosthesis ( 10 ) comprising: a tubular frame ( 11 ) having a passage ( 12 ) extending longitudinally therethrough; and a sleeve ( 13 ) disposed around and extending at least partially along said tubular frame, said sleeve extending from an end ( 14 ) of said frame and having a lumen ( 15 ) extending longitudinally therethrough and communicating with said passage of said frame, said sleeve in response to a fluid applying a first pressure in a first direction ( 17 ) passing the fluid through said lumen thereof, said sleeve collapsing in response to a fluid applying a second pressure in a second direction ( 18 ).
Claim 3
Dependent Claim
31 words
The prosthesis of claim 1 , wherein said sleeve extends through said passage of said tubular frame in response to a fluid applying a third pressure greater than said second pressure.
Claim 4
Dependent Claim
34 words
The prosthesis of claim 1 , wherein said tubular frame includes a plurality of stents ( 19 ) disposed along said tubular frame, said sleeve being disposed around at least one of said stents.
Claim 5
Dependent Claim
26 words
The prosthesis of claim 3 , wherein said plurality of stents includes a first flared stent ( 20 ) disposed about said end of said frame.
Claim 6
Dependent Claim
30 words
The prosthesis of claim 4 , wherein said plurality of stents includes a second flared stent ( 21 ) disposed about an other end ( 22 ) of said frame.
Claim 7
Dependent Claim
29 words
The prosthesis of claim 5 , wherein said plurality of stents includes at least one cylindrical stent ( 23 ) disposed between said first and said second flared stents.
Claim 8
Dependent Claim
22 words
The prosthesis of claim 3 , wherein said plurality of stents includes self-expanding stents ( 20 , 21 , and 23 ).
Claim 9
Dependent Claim
24 words
The prosthesis of claim 1 , wherein said tubular frame includes a plurality of self-expanding stents ( 19 - 21 , and 23 ).
Claim 10
Dependent Claim
20 words
The prosthesis of claim 8 , wherein at least one of said plurality of self-expanding stents includes a zig-zag stent.
Claim 11
Dependent Claim
30 words
The prosthesis of claim 9 , wherein said tubular frame includes a filament ( 24 ) interconnecting adjacent ends ( 25 , 26 ) of said plurality of self-expanding stents.
Claim 12
Dependent Claim
20 words
The prosthesis of claim 8 , wherein at least one of plurality of self-expanding stents includes a zig-zag wire stent.
Claim 13
Dependent Claim
22 words
The prosthesis of claim 1 , wherein said sleeve extends longitudinally along an entire length ( 27 ) of said tubular frame.
Claim 14
Dependent Claim
28 words
The prosthesis of claim 1 , wherein said sleeve extends from said end of said frame for a length in a range of from 0 through 20 cm.
Claim 15
Dependent Claim
28 words
The prosthesis of claim 1 , wherein said sleeve extends from said end of said frame for a length in a range of from 5 through 15 cm.
Claim 16
Dependent Claim
36 words
The prosthesis of claim 1 , wherein said sleeve comprises a material from at least one of a group consisting of polyurethane, silicone, polyamides, other urethanes or any biocompatible material that is flexible and acid resistant.
Claim 17
Dependent Claim
31 words
The prosthesis of claim 1 , wherein said sleeve disposed around and extending at least partially along said frame comprises material having a thickness in a range of 0.005″ through 0.008″.
Claim 18
Dependent Claim
31 words
The prosthesis of claim 1 , wherein said sleeve extending from said end of said frame comprises a material having a thickness in a range of 0.0015″ to and including 0.004″.
Claim 19
Dependent Claim
24 words
The prosthesis of claim 1 , wherein said extending from said end of said frame comprises a material having a thickness of approximately 0.002″.
References Cited (Backward Citations)
FR1576374A
Cited
US4271827A
Cited
GB2069339A
Cited
FR2513111A1
Cited
US4719916A
Cited
US4716900A
Cited
US4957508A
Cited
EP0275535A1
Cited
US5019102A
Cited
SU1600785A1
Cited
US4846836A
Cited
DE8905127U1
Cited
US5500014A
Cited
WO1991001117A1
Cited
US5314473A
Cited
US5413601A
Cited
US5411552A
Cited
EP0480667A1
Cited
US5662713A
Cited
US5306300A
Cited
WO1996029954A1
Cited
US5861036A
Cited
EP0808614A2
Cited
JPH10211287A
Cited
EP0857471A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-10-15 | 2005-04-16 | 2005-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-10-15 | 2009-04-16 | 2009-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-10-15 | 2013-04-16 | 2013-10-16 | $7700.00 | Window Closed / Lapsed |