Dual lumen catheter and method of use

Details Dual lumen catheter and method of use Dual lumen catheter and method of use

1994-02-28

1995-01-10

Yasko, John D.

Surgery

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

Material introduced into and removed from body through...

604 29, 604 43, 604264, A61M 100, A61M 300, A61M 2500

Patent

active

053802764

ABSTRACT:
The invention includes a dual lumen catheter which is a unitary, elongated, flexible catheter tube that is substantially circular in cross-section. The catheter tube has an outer wall member forming a tube having a proximal end and a distal end portion adapted for insertion within a vein or artery of a patient. The outer wall member defines first and second coaxial lumens that are separated by an inner common support wall which is substantially circular and joins the outer wall. The first lumen extends longitudinally between the opposed distal and proximal ends of the catheter tube and terminates coextensive with the distal end portion of the catheter tube. The second lumen extends longitudinally from the proximal end of the catheter tube and terminates proximal to the distal end portion of the catheter tube. The second lumen is crescent-shaped in cross-section and substantially surrounds the first lumen. The cross-sectional areas of the first and second lumens are approximately equal.

REFERENCES:
patent: 4300550 (1981-11-01), Gandi et al.
patent: 4583968 (1986-04-01), Mahurkar
patent: 4601713 (1986-07-01), Fuqua
patent: 4682978 (1987-07-01), Martin
patent: 4755176 (1988-07-01), Patel
patent: 4772268 (1988-09-01), Bates
patent: 5057073 (1991-10-01), Martin
patent: 5167623 (1992-12-01), Cianci et al.
patent: 5190520 (1993-03-01), Fenton, Jr. et al.
patent: 5273527 (1993-12-01), Schatz et al.
patent: 5318518 (1994-06-01), Plechinger et al.

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