Catheter shaft with an oblong transverse cross-section

US6013069A · kind A · utility

Assignee

• Advanced Cardiovascular Systems, Inc. · US

Inventors

• Motasim Sirhan · Sunnyvale, US
• Jovito L. Fernando · Modesto, US
• Troy L. Thornton · San Francisco, US
• Patrick Campbell · Belmont, US
• Eric Williams · Fairfield, US
• Lawrence D. Wasicek · San Jose, US

Key dates

• Filing date: Apr 21, 1998
• Grant date: Jan 11, 2000
• Expiry date: Apr 21, 2018

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2025/1097
• WIPO field: Medical technology
• WIPO sector: Instruments

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.