Multi fluid tissue resection methods and devices
First Claim
1. A method for tissue modification, comprising:
- inserting a probe into an organ;
delivering a first fluid into the organ to create a working space;
delivering a second fluid through the probe as a fluid stream to the tissue, wherein the second fluid is different from the first fluid; and
resecting a volume of the tissue using the fluid stream wherein one or more fluid stream parameters has been selected such that the resecting is selective to a particular tissue type, the one or more parameters comprising fluid stream shape and fluid stream source pressure.
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Accused Products
Abstract
Prostate treatment using fluid stream to resect prostate tissue, thereby relieving symptoms of conditions such as BPH, prostatitis, and prostatic carcinoma. A device having a fluid delivery element is positioned within a lumen of the urethra within the prostate. A fluid stream is directed outwardly from the fluid delivery element toward a wall of the urethral lumen. The fluid delivery element is moved to scan the fluid stream over the wall to remove a volume of tissue surrounding the lumen. The fluid may be combined with therapeutically active substances or with substances that increase resection efficiency. Fluid force may be adjusted to provide selective tissue resection such that soft tissue is removed while harder tissue is left undamaged. In order to gain a working space within the urethra, another fluid may be introduced to insufflate the urethra in the region of treatment.
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Citations
32 Claims
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1. A method for tissue modification, comprising:
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inserting a probe into an organ; delivering a first fluid into the organ to create a working space; delivering a second fluid through the probe as a fluid stream to the tissue, wherein the second fluid is different from the first fluid; and resecting a volume of the tissue using the fluid stream wherein one or more fluid stream parameters has been selected such that the resecting is selective to a particular tissue type, the one or more parameters comprising fluid stream shape and fluid stream source pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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22. The method of 21, wherein the removing comprises generating a pressure differential between an outlet for the first fluid and an inlet for the mixture.
Specification