Indwelling catheter with improved kinking resistance

Details Indwelling catheter with improved kinking resistance Indwelling catheter with improved kinking resistance

1998-11-03

1999-11-30

Coggins, Wynn Wood

Surgery

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

Treating material introduced into or removed from body...

604265, A61M 2500

Patent

active

059934360

ABSTRACT:
An indwelling catheter is made of a polyurethane resin having a Shore hardness of 60D or more. The soft segment of the polyurethane resin is constituted by polycaprolactone. The indwelling catheter has a kinking resistance of 10 mm or more when measured at 37.degree. C. in wet state. The Young's modulus is at first 20 kgf/mm.sup.2 or more when measure at 25.degree. C. in dry state, and reduces to 15 kgf/mm.sup.2 or less by soaking it in water of 37.degree. C. for 5 minutes or less.

REFERENCES:
patent: 5226899 (1993-07-01), Lee et al.
patent: 5453099 (1995-09-01), Lee et al.

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