Disposable lavage with instrument shield
US5338292A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1992 |
| Grant date | Aug 16, 1994 |
| Priority date | — |
| Expiry date | Dec 7, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M1/772
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A surgical device has a first cannula formed to define a first interior channel and a second cannula positioned substantially within the first interior channel of the first cannula. The second cannula is formed to define a second interior cannula. Both the first cannula and the second cannula are attached to a conduit piece that defines a first passageway in fluid communication with the first interior channel of the first cannula and a second passageway in fluid communication with the second interior channel of the second cannula. A third passageway defined by the conduit piece is in fluid communication with the first interior channel of the first cannula. The second passageway is covered by a breachable seal that permits insertion of instruments therethrough while limiting undesired fluid flow. A knife blade can be attached to said first cannula and said second cannula can be positioned around the knife blade to shield the knife blade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.