Intraluminal therapy catheter with inflatable helical member and methods of use
First Claim
1. A catheter for treatment of a vessel in a patient, the catheter comprising:
- an elongate catheter body having proximal and distal ends, first and second lumens extending therethrough, and a treatment portion disposed near the catheter body distal end; and
first and second helical balloons extending through the treatment portion and being in fluid communication with the first and second lumens, respectively, the first and second helical balloons being arranged in parallel relationship to form first and second helical elements, respectively, of a double helix configuration, wherein the first helical balloon and the second helical balloon are adapted to be independently inflated into contact with the vessel.
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Accused Products
Abstract
The invention is an intraluminal therapy catheter having a least two treatment members disposed near the distal end of the catheter, the members being independently inflatable to perform angioplasty and/or fluid-sourced brachytherapy. A first treatment member is helically mounted about the shaft of the catheter, and forms a helical perfusion channel when inflated into contact with the vessel being treated. In a first embodiment of the invention, the second treatment member is also helically mounted about the catheter shaft and capable of forming a helical perfusion channel when inflated into contact with the vessel. The first and second treatment members are intertwined to form a double helix configuration wherein each member is capable of being inflated to generally fill the helical perfusion channel created by simultaneous inflation of the other member. In a second embodiment of the invention, the second treatment member is a tubular balloon mounted generally coaxially about the catheter shaft, adjacent to the first treatment member.
152 Citations
11 Claims
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1. A catheter for treatment of a vessel in a patient, the catheter comprising:
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an elongate catheter body having proximal and distal ends, first and second lumens extending therethrough, and a treatment portion disposed near the catheter body distal end; and
first and second helical balloons extending through the treatment portion and being in fluid communication with the first and second lumens, respectively, the first and second helical balloons being arranged in parallel relationship to form first and second helical elements, respectively, of a double helix configuration, wherein the first helical balloon and the second helical balloon are adapted to be independently inflated into contact with the vessel.
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2. A method of treating a narrowing in a vessel of patient, the method comprising the steps of:
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providing a catheter comprising an elongate catheter body having proximal and distal ends, first and second lumens extending therethrough, and first and second independently inflatable helical members of a double helix configuration disposed adjacent the distal end;
positioning the catheter such that the double helix configuration is in proximity to the narrowing;
inflating the first helical member;
inflating the second helical member;
deflating the first helical member;
deflating the second helical member; and
removing the catheter. - View Dependent Claims (3, 4, 5)
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6. A method of treating a narrowing in a vessel of a patient, the method comprising the steps of:
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providing a catheter comprising an elongate catheter body having proximal and distal ends, first and second lumens extending therethrough, an inflatable dilatation member mounted about the catheter body near the distal end, and an inflatable brachytherapy member mounted about the catheter body near the distal end;
positioning the catheter such that the dilatation member is in proximity to the narrowing;
inflating and deflating the dilatation member to dilate the narrowing;
inflating the brachytherapy member with radioactive fluid to irradiate the narrowing;
deflating the brachytherapy member; and
removing the catheter from the patient. - View Dependent Claims (7, 8, 9, 10, 11)
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Specification