US 2009/0156998 A1Published application

Catheter having transitioning shaft segments

AssigneeAbbott Cardiovascular Systems Inc.

InventorsRamon Arana, Daniel Brown, Curt A. Novak, Justin K. Mann, John A. Simpson, Bruce M. Wilson, Leonard D. Barbod

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Abstract

A catheter having shaft segments which are joined together by a strong bond providing a low profile shaft section with a flexibility transition and/or a compositional transition. A balloon catheter embodying features of the invention has a distal tip member and a coupling band member surrounding a junction of an inner tubular member of the shaft, and has a gradual change in bending stiffness along a distal end section of the shaft which extends distally from a location within the balloon interior. Another catheter embodying features of the invention has shaft segments joined together by a diagonal seam.

Claims19

Dependent claims

A balloon catheter having a distal tip member, comprising:

a) an elongated shaft having a proximal end, a distal end, an inflation lumen, a guidewire receiving lumen, an inner tubular member with a distal section of the guidewire lumen therein, and a distal tip member which is secured to a distal end of the inner tubular member to define a distal end section of the guidewire lumen;
b) a balloon on a distal shaft section having an inflatable working length between inflatable proximal and distal cone sections, and a proximal and a distal skirt section sealingly secured to the shaft such that an inflatable interior of the balloon is in fluid communication with the inflation lumen;
and
c) a distal coupling band member on an outer surface of the inner tubular member surrounding a junction of the inner tubular member, having a distal end which abuts the inner surface of the balloon at a distal end of the distal cone section.

1 more element

Dependencies are inferred from the claim text.