Valved cannula assembly

Details Valved cannula assembly Valved cannula assembly

1992-04-16

1994-03-01

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604169, 604256, 137849, 2511491, A61M 5178

Patent

active

052902455

ABSTRACT:
A valved cannula assembly having a gasket retaining collar positioned internally within a gasket receiving member, the gasket retaining collar having a recess to receive and retain in a fixed position an annular gasket, which acts in conjunction with either a flapper valve assembly or an inserted instrument to seal the axial bore of the cannula and prevent escape of fluids or gases. A plugging member forces the retaining collar against the gasket receiving member. The recess of the gasket retaining collar is preferably provided with annular ridges to secure the gasket and a conical shoulder to allow some deflection.

REFERENCES:
patent: 4245635 (1981-01-01), Kontos
patent: 4261357 (1981-04-01), Kontos
patent: 5057084 (1991-10-01), Ensminger et al.
patent: 5084023 (1992-01-01), Lemieux
patent: 5098394 (1992-03-01), Luther
patent: 5125897 (1992-06-01), Quinn et al.
patent: 5154701 (1992-10-01), Cheer et al.

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