Methods for asymmetrical irradiation of a body cavity
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0 Petitions
Accused Products
Abstract
The disclosure describes devices and methods for asymmetrical irradiation at a body cavity or site, such as after removal of tissue, e.g. biopsy or cancer. One device includes a lumen which is off-set or off-settable from a longitudinal axis to increase the intensity of radiation received from a radiation source by a first tissue portion surrounding the body cavity and to reduce or minimize radiation received by a second tissue portion (e.g. healthy tissue) surrounding the body cavity.
144 Citations
13 Claims
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1-6. -6. (canceled)
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7. A method for irradiating tissue surrounding a body cavity of a patient, comprising:
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a) providing a device comprising i. an elongate outer catheter having a proximal end, a distal end, a treatment portion proximal to the distal end, an inner lumen extending within the outer catheter to the treatment location; and ii. an elongate inner catheter which has a proximal end, a distal end, a longitudinal axis and an inner lumen off-set from the longitudinal axis which extends within the inner catheter to the treatment location in the outer catheter and which is configured to receive the radiation source; b) inserting the device into the patient until the treatment location is deployed within the body cavity; c) rotating the inner catheter so that the off-set inner lumen is closer to a first portion of tissue surrounding the body cavity than a second portion of tissue surrounding the body cavity; and d) irradiating tissue surrounding the body cavity by a radiation source in the off-set inner lumen within the treatment location to asymmetrically irradiate tissue at the body site. - View Dependent Claims (12, 13)
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8-11. -11. (canceled)
Specification