Catheter with double step-down bore

Details Catheter with double step-down bore Catheter with double step-down bore

1989-02-07

1991-12-03

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604281, 604282, A61M 2500

Patent

active

050696734

ABSTRACT:
A catheter defines a flexible tubular body and a tubular tip carrier at the distal end of the body. At last the majority of the tubular body defines a first bore portion having a first meter. The catheter defines side holes adjacent the distal end, with the catheter defining a second bore portion distal to the side holes having a second diameter which is less than the first diameter. The catheter also defines an intermediate, tubular portion between the first and second bore portions, the intermediate portion having a third bore diameter that is less than the first diameter and greater than the second diameter. The intermediate portion also defines a thicker catheter wall than the catheter wall defining the first bore portion.

REFERENCES:
patent: 3416531 (1968-12-01), Edwards
patent: 4573476 (1986-03-01), Ruiz
patent: 4639252 (1987-01-01), Kelly et al.
patent: 4747840 (1988-05-01), Ladika
patent: 4863441 (1989-10-01), Lindsay et al.

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