Methods and apparatus for treatment of a body cavity or lumen
First Claim
1. A method for treating a body cavity or lumen, comprising:
- forming a treatment area for treating a tissue region of interest by defining the treatment area with one or more inflatable members;
adjusting a size of the treatment area by translating a first catheter relative to a second catheter;
introducing a cryoablative agent into the treatment area such that the tissue region is treated to a controlled depth by thermal ablation with the cryoablative agent;
monitoring a first pressure of the cryoablative agent introduced into the treatment area;
comparing the first pressure against a second pressure within the one or more inflatable members; and
adjusting the first pressure to be below the second pressure if the first pressure exceeds the second pressure.
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Accused Products
Abstract
Methods and apparatus for the treatment of a body cavity or lumen are described where a heated fluid and/or gas may be introduced through a catheter and into treatment area within the body contained between one or more inflatable/expandable members. The catheter may also have optional pressure sensing elements which may allow for control of the pressure within the treatment zone and also prevent the pressure from exceeding a pressure of the inflatable/expandable members to thereby contain the treatment area between these inflatable/expandable members. Optionally, a chilled or room temperature fluid such as water may then be used to rapidly terminate the treatment session.
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Citations
9 Claims
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1. A method for treating a body cavity or lumen, comprising:
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forming a treatment area for treating a tissue region of interest by defining the treatment area with one or more inflatable members; adjusting a size of the treatment area by translating a first catheter relative to a second catheter; introducing a cryoablative agent into the treatment area such that the tissue region is treated to a controlled depth by thermal ablation with the cryoablative agent; monitoring a first pressure of the cryoablative agent introduced into the treatment area; comparing the first pressure against a second pressure within the one or more inflatable members; and adjusting the first pressure to be below the second pressure if the first pressure exceeds the second pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification