Catheter introducer with fluid chamber valve

Details Catheter introducer with fluid chamber valve Catheter introducer with fluid chamber valve

1994-04-19

1995-10-24

Hirsch, Paul J.

Surgery

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

Treating material introduced into or removed from body...

604169, 604256, A61M 500

Patent

active

054606160

ABSTRACT:
A catheter introducer comprises a tubular sheath having an axis, and a housing carried on one end of the sheath. The housing encloses a fluid-filled chamber and carries a pair of valves aligned along the axis, the valves being at opposed ends of the fluid-filled chamber and communicating therewith. The valves serve to substantially retain the fluid within the housing, while allowing a catheter to pass through the valves and through the tubular sheath. The fluid of the chamber is preferably a gel or high viscosity liquid. The valves and fluid-filled chamber prevent the backflow of blood both in the presence and the absence of a catheter or the like extending through the valves and chamber.

REFERENCES:
patent: 4000739 (1977-01-01), Stevens
patent: 4240411 (1980-12-01), Hosono
patent: 4421296 (1983-12-01), Stephens
patent: 4475548 (1984-10-01), Muto
patent: 4626245 (1986-12-01), Weinstein
patent: 4813938 (1989-03-01), Raulerson
patent: 4895346 (1990-01-01), Steigerwald
patent: 4895565 (1990-01-01), Hillstead
patent: 5102395 (1992-04-01), Cheer et al.
patent: 5104389 (1992-04-01), Deem et al.
patent: 5176652 (1993-01-01), Littrell
patent: 5189607 (1993-02-01), Wu
patent: 5207656 (1993-05-01), Kranys
patent: 5226879 (1993-07-01), Ensminger et al.
patent: 5279571 (1994-01-01), Larkin
patent: 5389080 (1995-02-01), Yoon

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