Irrigation and evacuation cannula

Details Irrigation and evacuation cannula Irrigation and evacuation cannula

1997-03-26

1999-07-20

Coggins, Wynn Wood

Surgery

Means for introducing or removing material from body for...

Material introduced into and removed from body through...

604 35, 604249, A61M 100

Patent

active

059250135

ABSTRACT:
A cannula comprises a housing secured to a generally tubular sleeve member. The housing is provided with irrigation and evacuation fluid ports for connection to irrigation and evacuation conduits. An instrument port is formed in the housing and aligned with the sleeve member, wherein a surgical instrument can be inserted through the instrument port, housing, and sleeve member and into the bodily cavity. The instrument port includes seal members to seal against fluid leakage from the cannula with or without a surgical instrument passing through the housing and sleeve member. A valve member is rotatably carried by the housing to selectively obstruct one or more of the irrigation and evacuation ports. The valve is arranged such that the surgical instrument may remain in the housing and sleeve member during manipulation of the valve.

REFERENCES:
patent: 2964056 (1960-12-01), Speer
patent: 3157201 (1964-11-01), Littmann
patent: 4668215 (1987-05-01), Allgood
patent: 4696305 (1987-09-01), von Berg
patent: 4776840 (1988-10-01), Freitas et al.
patent: 4904245 (1990-02-01), Chen et al.
patent: 4967797 (1990-11-01), Manska
patent: 5135026 (1992-08-01), Manska
patent: 5312373 (1994-05-01), Freitas

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