Daul-lumen catheter

Details Daul-lumen catheter Daul-lumen catheter

1996-07-03

1997-12-30

McDermott, Corrine M.

Surgery

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

Treating material introduced into or removed from body...

604107, A61M 2500

Patent

active

057023654

ABSTRACT:
A dual-lumen blood-treatment catheter has inner and outer lumina open towards the patient end. The catheter has expandable portions in the outer lumen located near the patient end for atraumatically preventing collapse of the blood vessel to ensure free flow of blood into and out of the catheter, In one embodiment, the outer lumen has a plurality of slits around its circumference which form slats therebetween. Withdrawal of the inner lumen relative to the outer lumen causes the slits to open, thereby bowing the slats to expand the outer lumen.

REFERENCES:
patent: 4154242 (1979-05-01), Termanini
patent: 4572186 (1986-02-01), Gould et al.
patent: 4699611 (1987-10-01), Bowden
patent: 5030201 (1991-07-01), Palestrant
patent: 5073166 (1991-12-01), Parks et al.
patent: 5106363 (1992-04-01), Nobuyoshi
patent: 5112310 (1992-05-01), Grobe
patent: 5203773 (1993-04-01), Green
patent: 5275610 (1994-01-01), Eberbach
patent: 5421832 (1995-06-01), Lefebvre

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