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US 6,443,925 B1Granted
Balloon catheter shaft formed of liquid crystal polymeric material blend
AssigneeAdvanced Cardiovascular Systems, Inc.
InventorsStephen G. Schaible, Debashis Dutta
Life of this patent
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Abstract
A balloon catheter having at least part of the shaft thereof formed of a liquid crystal polymeric material. The liquid crystal polymeric material is preferably blended with a non-liquid crystal polymeric material, to form a polymer blend of at least 50 percent by weight liquid crystal polymeric material and the balance being essentially non-liquid crystal polymeric material. A catheter shaft formed from the polymer blend of the invention has improved strength, stiffness, and kink resistance.
Claims15
A balloon catheter, comprising:
- a) a catheter shaft having a proximal end, a distal end, and at least one lumen therein, and having a proximal shaft section and a distal shaft section, at least one of the shaft sections being formed of a polymer blend comprising at least 50 percent by weight of a liquid crystal polymeric material;
- and
- b) an inflatable member on a distal portion of the catheter shaft.
A balloon catheter, comprising:
- a) a catheter shaft having a proximal end, a distal end, and at least one lumen therein, and having a proximal shaft section which is formed of a polymer blend including liquid crystal polymeric material, and a distal shaft section which extends to a location proximal to a distal end of the catheter and which is formed of a polymeric material not including a liquid crystal polymeric material;
- and
- b) an inflatable member on a distal portion of the catheter shaft.
Dependencies are inferred from the claim text.