Prosthesis having a sleeve valve
US6746489B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2001 |
| Grant date | Jun 8, 2004 |
| Priority date | — |
| Expiry date | Jun 7, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/044
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Disclosed is a pressure sensitive prosthesis (10) that includes a tubular member (11) having a passageway (12) extending therethrough and a sleeve (13) attached about one end of the tubular member. The sleeve functions as a one-way valve to permit fluid flowing through the sleeve lumen (15) in a first direction (17) and under a first pressure, while collapsing in response to fluid flowing in a second direction 18 where the pressure that exceeds that of the first direction or pressure. One aspect of the invention includes an esophageal anti-reflux expandable prosthesis wherein the sleeve is adapted to invert back through the tubular stent frame to permit belching or vomiting (fluid or materials under a third, significantly higher pressure). Another aspect of the invention includes a tubular drainage stent (60), such as a biliary or urethral stent in which the sleeve opens to permit passage of fluids, then collapses to prevent retrograde flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.