Very low profile angioplasty balloon catheter with capacity to use steerable, removable guidewire
First Claim
Patent Images
1. An angioplasty balloon catheter assembly, comprising:
- a balloon-tipped, very low profile catheter made of plastic material having a tensile strength of at least 10,000 psi and including outer and inner coaxial tubes, defining an outer access annular passageway therebetween for inflating and deflating said balloon and an inner access annular passageway;
and a movable and steerable and removable guidewire received in said inner access annular passageway;
wherein the wall thicknesses of said outer and coaxial tubes are not more than about 0.001 inch.
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Abstract
A very low profile balloon catheter is disclosed that allows for an independently movable, steerable and removable guidewire. After removal of the guidewire, the balloon catheter retains adequately angiographic and hemodynamic characteristics. Such catheter construction allows for exchange of guidewires. A tracking mechanical device is included and provides excellent and easy advancement of the balloon catheter through severe obstructions.
251 Citations
7 Claims
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1. An angioplasty balloon catheter assembly, comprising:
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a balloon-tipped, very low profile catheter made of plastic material having a tensile strength of at least 10,000 psi and including outer and inner coaxial tubes, defining an outer access annular passageway therebetween for inflating and deflating said balloon and an inner access annular passageway; and a movable and steerable and removable guidewire received in said inner access annular passageway; wherein the wall thicknesses of said outer and coaxial tubes are not more than about 0.001 inch. - View Dependent Claims (2, 3, 4)
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5. A percutaneous transluminal angioplasty catheter assembly, comprising
a dilating catheter, a balloon attached to the distal end of said dilating catheter, said balloon being made of a relatively non-distensible material, said dilating catheter being made of plastic material having a tensile strength of at least 10,000 psi and including outer and inner coaxial tube defining a balloon access annular passageway therebetween, said balloon access annular passageway providing access for inflating and deflating said balloon. an annular guiding catheter surrounding said dilating catheter, and a removable and steerable guidewire for passing through said inner coaxial tube of said dilating catheter; - and
wherein the wall thickness of said outer and coaxial tubes are not more than about 0.001 inch. - View Dependent Claims (6, 7)
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Specification