Heated balloon catheter
First Claim
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1. A heated balloon catheter for treatment of constricted zones of body fluid passages by applying heat and pressure to the constricted area comprising:
- a catheter and a balloon secured to the distal end of the catheter, said balloon defining an internal volume communicating with at least one longitudinal passage in the catheter,means for directing pressurized fluid to and from the internal volume of said balloon through said at least one longitudinal passage,heat sensing means for the fluid in the balloon, electrical conductors connecting the heat sensing means with an external temperature controller.an internal electrode within the balloon,an external electrode outside the balloon, said external electrode being in contact with a patient body,an R.F. generator external to the catheter, and electrical conductors connecting the R.F. generator to the internal and external electrodes to provide capacitive heating of the tissue surrounding said balloon, andcontrol means for maintaining a temperature in the zone of constriction not greater than a protein denaturation temperature.
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Abstract
A heated balloon catheter for treatment of constricted zones of body fluid passages by applying heat and pressure to the constricted zone. The heat is generated by transmitting, to an antenna within a balloon carried by the catheter, radio frequency energy of about 13.56 MHz. Measuring the temperature of the balloon inflating fluid and controlling the temperature of the balloon inflating fluid to prevent overheating of the zone being treated and providing an alarm if the balloon leaks or bursts.
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Citations
15 Claims
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1. A heated balloon catheter for treatment of constricted zones of body fluid passages by applying heat and pressure to the constricted area comprising:
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a catheter and a balloon secured to the distal end of the catheter, said balloon defining an internal volume communicating with at least one longitudinal passage in the catheter, means for directing pressurized fluid to and from the internal volume of said balloon through said at least one longitudinal passage, heat sensing means for the fluid in the balloon, electrical conductors connecting the heat sensing means with an external temperature controller. an internal electrode within the balloon, an external electrode outside the balloon, said external electrode being in contact with a patient body, an R.F. generator external to the catheter, and electrical conductors connecting the R.F. generator to the internal and external electrodes to provide capacitive heating of the tissue surrounding said balloon, and control means for maintaining a temperature in the zone of constriction not greater than a protein denaturation temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification