| 摘要 |
A tissue protective system and method having particular application in thermoablative surgical therapies where heat or cold is used to create a kill zone for treating cancer cells as well as malignant or benign tumors in a targeted internal tissue area (e.g., the prostate) of a patient while sparing an adjacent benign internal tissue area (e.g., a neurovascular bundle). One of a hollow sheath or a balloon that is carried by a balloon catheter is located within an access opening that is made by a needle trocar inserted between the targeted tissue area in need of treatment and the benign tissue area to be protected in order to hold the protected tissue area off the targeted tissue area and away from the lethal temperature of the kill zone. The balloon of the balloon catheter is inflated in the access opening via a balloon channel which runs longitudinally through the catheter. At least one temperature sensor is mounted on the balloon and responsive to the temperature near the benign tissue area to be protected. Heat or cold is provided to the balloon from a heating wire or a circulating fluid, depending upon the temperature that is sensed by the temperature sensor.
|
