Venous return catheter

Details Venous return catheter Venous return catheter

1988-01-27

1989-09-05

Truluck, Dalton L.

Surgery

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

Treating material introduced into or removed from body...

604264, A61M 2500

Patent

active

048634417

ABSTRACT:
A kink-resistant, dual-drainage, venous return catheter preferably completely comprised of a polyvinyl chloride material and molded in a conventional injection molding process. This catheter comprises a smaller portion dimensioned to be received in a vena cava, a larger portion and a transition portion between the two other portions. In one embodiment, the transition portion comprises means for stinting the larger portion so that it can't enter the vena cava, a plurality of inlet openings and a plurality of reinforcing channels connecting the inlet openings to the larger portion so that fluid entering the inlet openings is channeled into the larger portion. All of these openings are preferably peripherally chamfered on the inside generally away from the smaller catheter portion and on the outside generally towards and away from the smaller catheter portion.

REFERENCES:
patent: 3630207 (1971-12-01), Kahn et al.
patent: 4129129 (1978-12-01), Amrine
patent: 4596548 (1986-06-01), DeVries et al.
patent: 4639252 (1987-01-01), Kelly et al.
patent: 4680029 (1987-07-01), Ranford et al.
patent: 4717379 (1988-01-01), Ekholmer
patent: 4784638 (1988-11-01), Ghajar et al.

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