Non-binding surgical valve
US5916198A · kind A · utility
348Cited by
23References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 5, 1997 |
| Grant date | Jun 29, 1999 |
| Priority date | — |
| Expiry date | Aug 5, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/320024
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A surgical valve prevents loss of insufflation gas (or the like) when no instrument traverses the valve lumen. The valve is suitable for passing surgical implements distally, and for passing enlarged bodies (such as large morcels of severed tissue) proximally. A first set of valve segments angle together along a slit, similar to a duck-bill valve. A second set of valve segments angle outwardly distally, the second segments often having a passage so that distal pressure pushes the first segments together along the slit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.