Balloon catheter having adjustable centering capabilities and methods thereof
First Claim
1. A method for delivering radioactive dose adequately to treat eccentric atheroma comprising positioning a radiation source close to said eccentric atheroma for a predetermined treatment period, wherein said positioning of the radiation source is adjustable, and wherein said method of positioning said radiation source comprises a plurality of balloons disposed at a distal section of a balloon catheter, said plurality of balloons being independently adjustable in inflation size.
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Accused Products
Abstract
A radiation treatment system comprising a balloon catheter and a treatment apparatus. A method for delivering radioactive dose adequately to treat eccentric atheroma comprises positioning a radiation source on the treatment apparatus to the eccentric atheroma for a predetermined treatment period, wherein the positioning of the radiation source over a balloon catheter is radially and/or axially adjustable. The balloon catheter has adjustable centering capability and comprises a tubular centering structure disposed at the distal end of the balloon catheter, wherein the centering structure comprises a plurality of balloon members that are independently radially expandable and adjustable in inflation size. The treatment apparatus is slidably positioned inside the lumen of the balloon catheter, wherein the treatment apparatus comprises a radiation source.
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Citations
15 Claims
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1. A method for delivering radioactive dose adequately to treat eccentric atheroma comprising positioning a radiation source close to said eccentric atheroma for a predetermined treatment period, wherein said positioning of the radiation source is adjustable, and wherein said method of positioning said radiation source comprises a plurality of balloons disposed at a distal section of a balloon catheter, said plurality of balloons being independently adjustable in inflation size.
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2. A radiation treatment system comprising:
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a balloon catheter having adjustable centering capability, said balloon catheter comprising an elongated catheter shaft having a shaft distal end, a shaft proximal end, a shaft distal section, and a plurality of lumens between the shaft distal end and the shaft proximal end;
a tubular centering structure disposed at the shaft distal end, wherein said centering structure comprises a plurality of balloon members that are radially expandable, wherein each of said plurality of balloon members is independently adjustable in inflation size;
each of said plurality of balloon members being connected to and communicated to one of said plurality of lumens for balloon inflation and deflation; and
a treatment apparatus slidably positioned inside one of said plurality of lumens of the balloon catheter, wherein said treatment apparatus comprises a radiation source. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15)
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12. A method for treating restenosis of a lesion region of a patient comprising the steps of:
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(g) inserting a balloon catheter through a body conduit to said lesion region of the patient, wherein said balloon catheter comprises a tubular centering structure disposed at a distal section of the balloon catheter, wherein said centering structure comprises a plurality of balloon members that are radially expandable;
(h) inflating each of said plurality of balloon members independently and adjustably in inflation size to stabilize the distal section of the balloon catheter with respect to said lesion region;
(i) inserting a treatment apparatus inside a lumen of the balloon catheter, wherein said treatment apparatus comprises a radiation source;
(j) positioning the radiation source at about the lesion region;
(k) holding the radiation source for a predetermined treatment period for treating restenosis; and
(l) withdrawing the treatment apparatus. - View Dependent Claims (13)
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Specification