Cannula assembly with squeeze operated valve
US5643301A · kind A · utility
232Cited by
3References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 7, 1995 |
| Grant date | Jul 1, 1997 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/3474
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An improved valve for cannulas and endoscopic access ports used during insufflation. A duckbill valve is provided which can accommodate the passage of endoscopic instruments such as endoscope, graspers and scissors and form a seal around the shaft of these instruments, thereby maintaining insufflation pressure. The access port housing around the duckbill valve is squeezable, so that the duckbill valve may be squeezed open by squeezing the access port housing, thereby facilitating removal of endoscopic instruments without the need to manipulate a valve fitting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.