Balloon for blood vessel-dilating catheter
AssigneeTerumo Kabushiki Kaisha
InventorsTakashi Kaneko, Akira Mochizuki, Toshinobu Ishida
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Abstract
A balloon for a blood vessel-dilating catheter is fabricated from a biaxially oriented film of an aromatic polyamide or an alloy thereof. The balloon has a calculated modulus of elasticity of from 70 to 190 kg/mm.sup.2. When the balloon is fabricated from an alloy of an aromatic polyamide, the alloy may contain up to 50% by weight of an aliphatic polyamide. The balloon of the invention is soft and flexible as well as dimensionally stable. Therefore, the balloon catheter has a high trackability, and may be inserted into the blood vessel without inducing any injury in the inner surface of the blood vessel. The balloon of the invention also has a good blood compatibility.
Claims9
A balloon for use with a blood vessel-dilating catheter having an inflation lumen and a second lumen, said catheter having a balloon with a proximal end fixed liquid-tightly to an outer surface of said catheter and a distal end fixed liquid-tightly to the distal end of said catheter, wherein the improvement comprises the balloon being fabricated from a biaxially oriented film of an aromatic polyamide or an alloy thereof, said aromatic polyamide having a polymerization degree of approximately 50 to 5,000 and an average molecular weight of approximately 3,000 to 100,000, said balloon having a calculated modulus of elasticity of from 70 to 190 kg/mm.
A blood vessel-dilating catheter comprising an inflation lumen and a second lumen, said catheter having a balloon with a proximal end fixed liquid-tightly to an outer surface of said catheter and a distal end fixed liquid-tightly to the distal end of said catheter, said balloon being fabricated from a biaxially oriented film of an aromatic polyamide or an alloy thereof, said aromatic polyamide having a polymerization degree of approximately 50 to 5,000 and an average molecular weight of approximately 3,000 to 100,000, said balloon having a calculated modulus of elasticity of from 70 to 190 kg/mm.
Dependencies are inferred from the claim text.