Drug eluting brachytherapy methods and apparatus
First Claim
Patent Images
1. A drug eluting brachytherapy device, comprising:
- (a) an insertion member having a proximal portion, a distal portion, and at least one lumen extending therethrough;
(b) an expandable surface member mated to the distal portion of the insertion member and defining a spatial volume therein, wherein said spatial volume is configured to receive a radiation source therein to enable a three-dimensional isodose profile that is substantially similar in shape to said expandable surface member; and
(c) a plurality of treatment releasably mated with an outer surface of the expandable surface member;
wherein at least a portion of each of the treatment agents is delivered to adjacent tissue when the brachytherapy device is positioned within a tissue cavity, and wherein a first treatment agent begins delivery before a second treatment agent.
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Abstract
An interstitial brachytherapy apparatus and methods for treating proliferative tissue disorders with radiation and a surface delivered treatment agent. The brachytherapy device includes an insertion member having proximal and distal portions and at least one lumen extending therethrough. An expandable surface member is mated to the distal portion of the insertion member and includes a treatment agent releasably mated thereon. When the brachytherapy device is positioned within a tissue cavity and the expandable surface member is expanded, at least a portion of the treatment agent is delivered to tissue surrounding the tissue cavity.
54 Citations
28 Claims
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1. A drug eluting brachytherapy device, comprising:
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(a) an insertion member having a proximal portion, a distal portion, and at least one lumen extending therethrough; (b) an expandable surface member mated to the distal portion of the insertion member and defining a spatial volume therein, wherein said spatial volume is configured to receive a radiation source therein to enable a three-dimensional isodose profile that is substantially similar in shape to said expandable surface member; and (c) a plurality of treatment releasably mated with an outer surface of the expandable surface member;
wherein at least a portion of each of the treatment agents is delivered to adjacent tissue when the brachytherapy device is positioned within a tissue cavity, and wherein a first treatment agent begins delivery before a second treatment agent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A drug eluting tissue positioning device for positioning target tissue surrounding a resected tissue cavity so that the target tissue can receive a measured radiation dose, comprising:
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a catheter body member having a proximal portion and a distal portion; an expandable surface member, the expandable surface member defining a spatial volume therein, wherein said spatial volume is configured to receive a radiation source therein; and a plurality of treatment releasably mated with an outer surface of the expandable surface member;
wherein at least a portion of each treatment agent is delivered to tissue surrounding the resected tissue cavity when the device is positioned within the resected tissue cavity, and wherein a first treatment agent begins deliver to the tissue before a second treatment agent begins delivery. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. A method of delivering a treatment material, comprising:
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providing a drug eluting brachytherapy device having a catheter body member with a proximal portion and a distal portion, an expandable surface member defining a spatial volume, and a plurality treatment agents releasably mated with an outer surface of the expandable surface member; positioning the brachytherapy device within a tissue cavity; and delivering the treatment agents to tissue surrounding the tissue cavity, wherein a first treatment agent begins releasing before a second treatment agent begins releasing. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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Specification