Trocar valve assembly
US5803919A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1994 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | Dec 23, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7885
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A surgical device having a longitudinal configuration and an axis extending between a proximal end and an opposing distal end includes a housing having an inner surface defining a chamber and a cannula extending distally of the housing. A valve disposed in the housing has a conical outer wall and a plurality of distal walls which form a first seal with the inner surface of the housing and a second seal. The walls include multiple fold segments which are foldable between a first position wherein the second seal closes the cannula and a second position wherein the second seal opens the cannula. A method for actuating the valve includes the step of inserting an instrument distally into the valve to contact the fold segments along a line and to move the fold segments to the second position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.