Valve assembly for introducing instruments into body cavities
US5722958A · kind A · utility
43Cited by
71References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 1996 |
| Grant date | Mar 3, 1998 |
| Priority date | — |
| Expiry date | May 23, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2039/0686
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A valve assembly adapted for introduction of surgical instruments into a patient's body includes a valve body formed of a flexibly resilient material which defines an aperture for reception of the instrument. The aperture is configured and dimensioned such that insertion of the instrument into the aperture will cause the resilient material of the valve body to resiliently engage the outer surface of the instrument in a substantially gas tight manner. The valve assembly includes a biasing member for closing the valve body to form a gas tight seal prior to inserting the instrument therethrough.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.