Combination introducer cannula and reducer for use therein

Details Combination introducer cannula and reducer for use therein Combination introducer cannula and reducer for use therein

1994-08-11

1995-08-08

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604167, 604247, A61M 500

Patent

active

054394554

ABSTRACT:
A combination of an introducer cannula and a removable reducer for use therewith. The introducer cannula comprises an elongate tubular member having proximal and distal extremities and having a flow passage extending therethrough. A housing is mounted on the distal extremity and has a chamber in communication with the flow passage in the tubular member. Proximal and distal spaced apart seals are disposed in the chamber and are carried by the housing. The reducer comprises a body having proximal and distal extremities. The body has a cylindrical extension and the cylindrical extension has at least two elongate slots formed therein which extend through the cylindrical extension from the proximal extremity to the distal extremity of the body. The elongate slots extend diametrically of the cylindrical extension and adjoin each other to provide a central opening. A membrane seal is carried by the body and overlies the central opening. The membrane seal has a hole therein in alignment with the central opening. The hole in the membrane has a diameter of less than the diameter of the central opening. The reducer is secured to the introducer cannula so that the cylindrical extension of the body of the reducer mates with the proximal seal of the introducer cannula.

REFERENCES:
patent: 4909798 (1990-03-01), Fleischhacker et al.
patent: 5125910 (1992-06-01), Freitas
patent: 5273545 (1993-12-01), Hunt et al.
patent: 5284475 (1994-02-01), Mackal
patent: 5350362 (1994-09-01), Stouder, Jr.

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