Coil reinforced catheter inner tubular member
AssigneeAdvanced Cardiovascular Systems, Inc.
InventorsJason J. Hwang, Marc L. Speck, Hanh V. Hoang
Life of this patent
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Abstract
A catheter having an elongated shaft formed of a polymeric tube with at least a section having an outer coiled support member wound in a first direction and embedded in the polymeric tube, and an inner coiled support member wound in a second direction opposite to the first direction. In a presently preferred embodiment, the inner coiled support member has coils spaced closer together than coils of the outer coiled support member. In one embodiment, the inner coiled support member is partially embedded in the polymeric tube.
Claims24
An intravascular balloon catheter, comprising:
- a) an elongated shaft having an outer tubular member defining an inflation lumen, and an inner tubular member defining a guidewire lumen, the inner tubular member comprising a polymeric tube with at least a section having an outer coiled support member wound in a first direction and embedded in the polymeric tube, and an inner coiled support member wound in a second direction opposite to the first direction and having coils spaced closer together than coils of the outer coiled support member;
- and
- b) an inflatable balloon on a distal shaft section having an interior in fluid communication with the inflation lumen.
An intravascular balloon catheter, comprising:
- a) an elongated shaft having an outer tubular member defining an inflation lumen, and an inner tubular member defining a guidewire lumen, the inner tubular member comprising a polymeric tube with at least a section having an outer coiled support member wound in a first direction and completely embedded in the polymeric tube, and an inner coiled support member wound in a second direction opposite to the first direction and partially embedded in the polymeric tube and having coils spaced closer together than coils of the outer coiled support member, and a lubricious coating on an inner surface of the inner coiled support member;
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- b) an inflatable balloon on a distal shaft section having an interior in fluid communication with the inflation lumen.
Dependencies are inferred from the claim text.