| 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 3) of a patient while sparing an adjacent benign internal tissue area (e.g., a neurovascular bundle 1). One of a hollow sheath (16) or a balloon (24) that is carried by a balloon catheter (20, 20-1) is located within an access opening that is made by a needle trocar (10) 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 (24) of the balloon catheter (20, 20-1) is inflated in the access opening via a balloon channel (26) which runs longitudinally through the catheter. At least one temperature sensor (40, 42) is mounted on the balloon (24) and responsive to the temperature near the benign tissue area to be protected. Heat or cold is provided to the balloon (24) from a heating wire (34) or a circulating fluid, depending upon the temperature that is sensed by the temperature sensor (40, 42). |
