Dual lumen catheter

Details Dual lumen catheter Dual lumen catheter

1990-06-26

1991-10-15

Yasko, John D.

Surgery

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

Material introduced into and removed from body through...

604280, A61M 500

Patent

active

050570730

ABSTRACT:
A dual lumen catheter, for insertion into a vein of a patient for use in haemodialysis treatments, having first and second portions defining a shorter intake lumen and a longer return lumen. The intake lumen is closed at its end and receives blood through at least one opening in the side wall of the catheter and the second lumen includes the second portion which is of smaller cross-section than the first portion. Also described is a catheter having an intake lumen and a return lumen in which the return lumen has a tip of different stiffness from the main body of the catheter, the intake lumen being closed at its end and receiving fluid through an opening in the side wall of the catheter.

REFERENCES:
patent: 3485234 (1969-12-01), Stevens
patent: 4149535 (1979-04-01), Volder
patent: 4385631 (1983-05-01), Uthmann
patent: 4403983 (1983-09-01), Edelman
patent: 4568329 (1986-02-01), Mahurkar
patent: 4619643 (1986-10-01), Bai

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