Cannula sealing mechanism
US5282790A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 21, 1992 |
| Grant date | Feb 1, 1994 |
| Priority date | — |
| Expiry date | Oct 21, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/3462
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A sealing assembly for sealing a cannula used in medical procedures is provided. The cannula is configured to allow passage therethrough of medical devices. The cannula is attached to a conduit piece formed to define at least one channel. A compressible annular seal is positioned in the at least one channel to allow passage through its central aperture of a medical device. A mechanism is provided for compressing the compressible annular seal to provide an airtight seal across the at least one channel. A duckbill flap valve is also positioned in the at least one channel adjacent to the compressible annular seal to receive the medical device after its insertion through the central aperture of the compressible annular seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.