Expandable brachytherapy device
First Claim
1. A brachytherapy device for treating tissue surrounding a body cavity within a patient, comprising:
- a) a shaft having a proximal portion, a distal portion, a distal treatment portion proximate to the distal portion, and a longitudinal axis, the shaft having a plurality of flexible tubes defining off-set radiation delivery lumens radially off-set from the longitudinal axis, each of the plurality of off-set radiation delivery lumens being configured to receive a radiation source, and the plurality of off-set radiation delivery lumens are deformable into an arcuate shape;
b) an expandable member coupled to the shaft to define an expandable volume that surrounds the distal treatment portion, the expandable member being configured to provide spacing between said distal treatment portion and a treatment zone to reduce a dose gradient to said treatment zone treated by said distal treatment portion; and
c) a cap located on the distal portion of the shaft, and a distal end of each of the plurality of flexible tubes is secured in the cap.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for brachytherapy in a lumpectomy cavity of a breast including, positioning a distal end of a brachytherapy device within the cavity, expanding an expandable surface portion located between proximal and distal ends of the device within the cavity, the source lumen tubes defining a curved configuration within the cavity; and positioning a source of radiation sequentially within one or more source lumens of the source lumen tubes according to a brachytherapy treatment plan. The device includes an inner tube, and a plurality of source lumen tubes located around the inner tube and including distal ends secured together with the inner tube at the distal end disposed within the body cavity, the source lumen tubes comprising proximal portions sufficiently long to extend outside the breast.
288 Citations
20 Claims
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1. A brachytherapy device for treating tissue surrounding a body cavity within a patient, comprising:
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a) a shaft having a proximal portion, a distal portion, a distal treatment portion proximate to the distal portion, and a longitudinal axis, the shaft having a plurality of flexible tubes defining off-set radiation delivery lumens radially off-set from the longitudinal axis, each of the plurality of off-set radiation delivery lumens being configured to receive a radiation source, and the plurality of off-set radiation delivery lumens are deformable into an arcuate shape; b) an expandable member coupled to the shaft to define an expandable volume that surrounds the distal treatment portion, the expandable member being configured to provide spacing between said distal treatment portion and a treatment zone to reduce a dose gradient to said treatment zone treated by said distal treatment portion; and c) a cap located on the distal portion of the shaft, and a distal end of each of the plurality of flexible tubes is secured in the cap. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A brachytherapy device for treating tissue surrounding a body cavity within a patient, comprising:
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a) a shaft having a proximal portion, a distal portion, a distal treatment portion proximate to the distal portion, and a longitudinal axis, the shaft having a plurality of flexible tubes defining off-set radiation delivery lumens radially off-set from the longitudinal axis and a central radiation delivery lumen extending into the distal treatment portion, each of the a plurality of off-set radiation delivery lumens being configured to receive a radiation source, wherein the plurality of off-set radiation delivery lumens are deformable into an arcuate shape; b) an expandable member coupled to the shaft to define an expandable volume that surrounds the distal treatment portion, the expandable member being configured to provide spacing between said distal treatment portion and a treatment zone to reduce a dose gradient to said treatment zone treated by said distal treatment portion; and c) a cap located on the distal portion of the shaft, and a distal end of each of the plurality of flexible tubes is secured in the cap. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification