Thin wall catheter having enhanced torqueability characteristics

Details Thin wall catheter having enhanced torqueability characteristics Thin wall catheter having enhanced torqueability characteristics

1994-05-18

1995-04-04

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604264, 128658, A61M 2500

Patent

active

054032920

ABSTRACT:
A diagnostic catheter comprises an inner layer of 100 percent polyamide over which is a braided metal wire sleeve and an outer layer formed as a blend of either the polyamide and PEBA along with a suitable radiopaque filler or, alternatively, a blend of PEBA having different durometers. Affixed either directly to the end of the above tubular body or to a stem member secured to that tubular body is a soft-tip formed from a blend of PEBA whose hardness is such that the catheter can be considered as having an atraumatic tip. The resulting catheter exhibits excellent torque and column strength characteristics while providing a relatively large diameter lumen for a given outside diameter.

REFERENCES:
patent: 4563181 (1986-01-01), Wijayarathna et al.
patent: 4898591 (1990-02-01), Jang et al.
patent: 5221270 (1993-06-01), Parker
patent: 5226899 (1993-07-01), Lee et al.
patent: 5254107 (1993-10-01), Soltesz
patent: 5318032 (1994-06-01), Lonsbury et al.

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