Semi-continuous co-extruded catheter shaft

Details Semi-continuous co-extruded catheter shaft Semi-continuous co-extruded catheter shaft

1998-06-15

2000-04-04

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604264, 604527, A61M 2500

Patent

active

060455470

ABSTRACT:
A multi-layer catheter tube section providing gradually increasing flexibility. One catheter tube section has a first, inner layer formed of a flexible material and a second, outer layer formed of a stiffer material. The outer layer tapers distally, having decreasing layer thickness with increasing distal position. The decreasing wall thickness provides a decreasing stiffness contribution which imparts increasing flexibility to the catheter portions having a smaller outer layer. The tube sections can be joined end to end to form longer catheter regions having a greater number of gradual flexibility changes.

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patent: 5792124 (1998-08-01), Horrigan et al.
patent: 5851203 (1998-12-01), van Muiden

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