Balloon catheter and method
First Claim
1. A balloon catheter device for treating an obstructing material within a body passageway, said device comprising:
- an elongate, flexible catheter body having a longitudinal axis extending between a proximal end and a distal end, said catheter body further comprising an outer wall and a plurality of lumens extending along said longitudinal axis from said proximal end, at least one of said lumens extending to an infusion port in said outer wall, said infusion port being disposed adjacent the distal end;
a first inflatable and deflatable balloon, disposed coaxially about the catheter body proximally of the infusion port, said first balloon being in fluid communication with a second of said plurality of lumens for inflation and deflation of said first balloon;
saida second inflatable and deflatable balloon disposed coaxially about the catheter body distally and spaced apart from said first balloon, distally of the infusion port, said second balloon being in fluid communication with a fourth of said plurality of lumens for inflation and deflation by passage of a second fluid;
one of said first and second balloons comprising a high compliance cuff and the other comprising a low compliance angioplasty balloon;
wherein there is no balloon disposed between said infusion port and said low compliance cuff.
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Accused Products
Abstract
A balloon catheter device for treating an obstructing material within a vascular conduit or other body passageway. The device comprises an elongate catheter body extending between a proximal end and a distal end. A high compliance balloon and a spaced apart angioplasty balloon are coaxially disposed along the distal end. The catheter device includes a plurality of longitudinal lumens which extend along the catheter body from the proximal end. At least one of the lumens has a cross section which is non circular and is configured, in conjunction with the other lumens to provide a maximum total lumen cross sectional area within a minimum diameter catheter body.
165 Citations
19 Claims
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1. A balloon catheter device for treating an obstructing material within a body passageway, said device comprising:
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an elongate, flexible catheter body having a longitudinal axis extending between a proximal end and a distal end, said catheter body further comprising an outer wall and a plurality of lumens extending along said longitudinal axis from said proximal end, at least one of said lumens extending to an infusion port in said outer wall, said infusion port being disposed adjacent the distal end; a first inflatable and deflatable balloon, disposed coaxially about the catheter body proximally of the infusion port, said first balloon being in fluid communication with a second of said plurality of lumens for inflation and deflation of said first balloon;
saida second inflatable and deflatable balloon disposed coaxially about the catheter body distally and spaced apart from said first balloon, distally of the infusion port, said second balloon being in fluid communication with a fourth of said plurality of lumens for inflation and deflation by passage of a second fluid; one of said first and second balloons comprising a high compliance cuff and the other comprising a low compliance angioplasty balloon; wherein there is no balloon disposed between said infusion port and said low compliance cuff. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A balloon catheter device for treating an obstructing material within a body passageway, said device comprising:
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an elongate, flexible catheter body having a longitudinal axis extending between a proximal end and a distal end, said catheter body further comprising an outer wall and at least four lumens extending along said longitudinal axis from said proximal end, a first of said four lumens extending to an open distal tip at the distal end and being configured for movably supporting a catheter guidewire, a second of said lumens extending to an infusion port within said outer wall, said infusion port being disposed adjacent the distal end; a first inflatable and deflatable balloon disposed coaxially about the catheter body proximally of the infusion port, said first balloon being in fluid communication with a third of said plurality of lumens for inflation and deflation by passage of a fluid; and a second inflatable and deflatable balloon disposed coaxially about the catheter body distally and spaced apart from said first balloon, distally of the infusion port, said second balloon being in fluid communication with a fourth of said plurality of lumens for inflation and deflation by passage of a second fluid; one of said first and second balloons comprising a high compliance cuff and the other comprising a low compliance angioplasty balloon; wherein there is no balloon disposed between said infusion port and said low compliance cuff; and wherein at least one of said plurality of lumens has a non-circular cross-section. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for relieving a constriction in a vascular conduit using a balloon catheter device having an elongate catheter body extending along a longitudinal axis between a proximal catheter end and a distal catheter end, a high compliance cuff and a low compliance angioplasty balloon being disposed coaxially about the distal end of said catheter body, said method comprising the steps of:
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inserting the balloon catheter device into the vascular conduit such that said angioplasty balloon is within said constriction; inflating said low compliance angioplasty balloon within said vascular conduit; inflating said high compliance cuff within said vascular conduit; infusing a therapeutic agent through a lumen in said catheter and out of an infusion port disposed on said catheter body between said high compliance cuff and said angioplasty balloon; partially deflating said angioplasty balloon so that the therapeutic agent flows over said constriction in order to more effectively treat said constriction.
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Specification