Catheter with a polyimide distal tip
AssigneeAbbott Cardiovascular Systems Inc.
InventorsJeong S. Lee, Edwin Wang
Life of this patent
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Abstract
A catheter having an elongated shaft which has a multilayered distal tip with a first layer formed of a polyimide first material and a second layer formed of a polymeric second material. In one embodiment the multilayered distal tip is a separate member, distal to the distal end of a proximal portion of the shaft. In another embodiment, the shaft has an outer tubular member, and a multilayered inner tubular member with a distal end which forms the multilayered distal tip of the shaft. In a presently preferred embodiment, the polyimide material is a thermoset polyimide. In one embodiment, the polymeric second material is a polyamide material.
Claims12
A catheter, comprising an elongated shaft having a proximal shaft section, a distal shaft section, and a multilayered distal tip at a distal end of the catheter with a lumen, the distal tip having a first layer formed of a polyimide first material and a second layer formed of a polymeric second material not fusion bondable to the polyimide first material, wherein said first and second layer are adhered to one another but no adhesive is present between said first and second layers, wherein the second layer of the distal tip is in direct contact with the first layer around a circumference of the first layer.
Dependencies are inferred from the claim text.