Cryoablation catheter and method of performing cryoablation

Details Cryoablation catheter and method of performing cryoablation Cryoablation catheter and method of performing cryoablation

A - Human Necessities

61

B

128/127, 128/130

A61B 18/02 (2006.01) A61B 17/00 (2006.01)

Patent

CA 1337791

A method and apparatus is provided for cryogenically ablating a predetermined portion of tissue in the body of a patient. Cryoablation is accomplished by a cryoablation catheter having a hollow shaft insertable into the blood vessel of a patient. The shaft has a closed tip portion and a fluid flow passage for directing a flow of cryogenic fluid to the tip. Cryogenic cooling is effected by a liquid-to-gas fluid phase change adjacent the catheter tip. Electrical signal activity may be monitored by an electrode formed integral with the tip to confirm treatment of the proper tissue site.

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