Balloon catheters having ultrasonically driven interface surfaces and methods for their use
First Claim
1. A catheter comprising:
- a catheter body having a proximal end and a distal end;
an oscillating driver disposed in the distal end of the catheter body;
an interface surface mechanically coupled to the driver so that said surface can be oscillated relative to the catheter body; and
an inflatable balloon disposed on the catheter body proximate the interface surface, wherein the balloon is disposed at least partially over the interface surface.
1 Assignment
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Accused Products
Abstract
A catheter comprises a catheter body having an oscillating driver, an interface surface mechanically coupled to the driver, and an inflatable balloon disposed near the interface surface. The balloon may be an angioplasty balloon, in which case the interface surface will deliver ultrasonic or other vibratory energy into a blood vessel as part of an angioplasty or related procedure. Alternatively, the catheter may comprise a pair of axially spaced-apart isolation balloons, in which case the interface surface can deliver ultrasonic or other vibratory energy into a treatment region defined between said balloons. The energy can thus act to mix or enhance penetration of a treatment held between said balloons in performing a vascular treatment procedure.
330 Citations
32 Claims
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1. A catheter comprising:
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a catheter body having a proximal end and a distal end; an oscillating driver disposed in the distal end of the catheter body; an interface surface mechanically coupled to the driver so that said surface can be oscillated relative to the catheter body; and an inflatable balloon disposed on the catheter body proximate the interface surface, wherein the balloon is disposed at least partially over the interface surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A catheter comprising:
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a catheter body having a proximal end and a distal end; an oscillating driver disposed in the distal end of the catheter body; an interface surface mechanically coupled to the driver so that said surface can be oscillated relative to the catheter body; and an inflatable balloon disposed on the catheter body proximate the interface surface, wherein the balloon is disposed at least partially over the interface surface, wherein the longitudinally oscillating driver comprises a longitudinally oscillating member and a spring element connecting the interface member to the catheter body, wherein the interface member engages distal ends of the spring element and of the oscillating driver. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A method for dilatating a stenotic lesion in a blood vessel, said method comprising:
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providing a catheter having an impermeable angioplasty balloon near a distal end thereof and an interface surface within the angioplasty balloon; filling the interior of the angioplasty balloon with a liquid inflation medium; and oscillating the interface surface to pulse the liquid in the balloon and transfer energy through the liquid into the blood vessel wall. - View Dependent Claims (28, 29, 30, 31, 32)
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Specification