Dual lumen catheter

Details Dual lumen catheter Dual lumen catheter

1993-03-22

1994-09-13

Kruter, Jerome L.

Surgery

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

Material introduced into and removed from body through...

604 48, 604284, A61M 300

Patent

active

053464710

ABSTRACT:
A coaxial configured dual lumen catheter for hemodialysis treatment and the like comprising an outer extraction lumen having an inner return lumen disposed therein configured to be coupled between a patient and a dialysis device, the outer extraction lumen and the inner return lumen are similarly configured to cooperatively form a proximal section coupled to the dialysis device, an arcuate intermediate section and a distal section to be placed into the patient wherein the cross-sectional area of the outer extraction lumen and inner return lumen in the arcuate section is greater than the cross-sectional area of the outer extraction lumen and the inner return lumen in the distal section to compensate for the increase in friction and turbulence created by the arcuate configuration and thereby more evenly distribute fluid flow pressure through the dual lumen catheter.

REFERENCES:
patent: 3633579 (1972-01-01), Alley et al.
patent: 4493696 (1985-01-01), Uldall
patent: 4687471 (1987-08-01), Twardowski et al.
patent: 4838881 (1989-06-01), Bennett
patent: 5009636 (1991-04-01), Wortley et al.
patent: 5149330 (1992-09-01), Brightbill
patent: 5156592 (1992-10-01), Martin et al.

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