Adjustable introducer valve
US5820600A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 1996 |
| Grant date | Oct 13, 1998 |
| Priority date | — |
| Expiry date | May 14, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/347
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An adjustable pnemostasis valve and method for providing a fluid seal around the periphery of endoscopic viewing scopes and instruments having a wide variety of cross-sectional sizes. The valve (8) comprises a first valve member (50) having an opening for receiving an elongated object, such as a percutaneous access device, viewing scope or an endoscopic instrument, and a flexible membrane (60) defining an aperture substantially aligned with the opening in the first valve member. A second valve member (40) is coupled to the flexible membrane for moving the membrane relative to the first valve member. As the membrane is moved by the second valve member, the size of the aperture varies so that the membrane can accommodate various sized instruments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.