A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 7/00 (2006.01) A61B 18/08 (2006.01) A61F 7/12 (2006.01) A61M 25/04 (2006.01) A61M 25/10 (2006.01) A61B 17/00 (2006.01) A61B 18/00 (2006.01)
Patent
CA 2087623
DeFord-Ely-Fearnot 1-1-14 Abstract of the Disclosure A catheter, system, and method for selectively ablating prostatic tissue about the prostatic urethra. The catheter includes an elongated member having distal, proximal, and intermediate portions, the intermediate portion being shaped and sized for intimate contact with the prostatic urethra. The distal and proximal portions of the catheter include fixation and cooling balloons having an annular recess therein for positioning the internal and external sphincters therein and for maintaining the longitudinal position of the catheter in the prostatic urethra. A thermally conducted, heat-emitting element is positioned in the intermediate portion for producing a thermally conductive heat distribution to ablate the prostatic tissue. The catheter also includes irrigation and aspiration passageways therein for communicating with the interior of the distal and proximal cooling balloons. A circulating pump of the ablation system circulates coolant through the balloons to maintain the temperature of the sphincters below an injurious temperature. Sensors are positioned about the heat-emitting element as well as in the cooling balloons for supplying information to the controller of the system. The controller in response to the temperature information and the energy supplied to the heat-emitting element controls the supply of energy to the catheter as well as the pump circulating the coolant. 104
Deford John A.
Ely Joseph F.
Fearnot Neal E.
Kirby Eades Gale Baker
Med Institute Inc.
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