Catheter shaft with an oblong transverse cross-section

Details Catheter shaft with an oblong transverse cross-section Catheter shaft with an oblong transverse cross-section

1997-01-02

2000-02-22

Coggins, Wynn Wood

Surgery

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

Treating material introduced into or removed from body...

604 95, 606194, A61M 2900

Patent

active

060274751

ABSTRACT:
A balloon dilatation catheter having a catheter shaft with an oblong transverse cross-section with one transverse dimension in a first direction being significantly larger than a second transverse dimension in a direction perpendicular to the first direction. The first dimension is about 1.1 to about 3 times greater, preferably about 1.2 to about 2.5 times greater than the second dimension. In one embodiment, a length of the distal shaft section has inner and outer tubular members where about 30% to not more than about 90% of the inner periphery of the outer tubular member takes the shape of and is secured to the exterior of the inner tubular member. In another embodiment the flexible distal shaft section is an extruded section having an oval or elliptical transverse cross-section. Preferably a pseudoelastic hypotube of NiTi alloy defines at least part of the inflation lumen within the catheter shaft. In another embodiment of the invention the proximal shaft of the catheter has an inner and outer tubular member.

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