High resolution cryosurgical method and apparatus

Details High resolution cryosurgical method and apparatus High resolution cryosurgical method and apparatus

A - Human Necessities

61

B

A61B 18/02 (2006.01) A61B 17/00 (2006.01) A61B 17/34 (2006.01) A61B 19/00 (2006.01)

Patent

CA 2265016

A high resolution cryosurgical method and device for treating a patient's prostate are provided. The method includes the steps of (a) introducing a plurality of cryosurgical probes to the prostate, the probes having a substantially small diameter, the probes being distributed across the prostate, so as to form an outer arrangement of probes adjacent the periphery of the prostate and an inner arrangement of probes adjacent the prostatic urethra; (b) producing an ice-ball at the end of each of said cryosurgical probes, so as to locally freeze a tissue segment of the prostate. The apparatus includes (a) a plurality of cryosurgical probes of small diameter, the probes being for insertion into the patient's organ, the probes being for producing ice-balls for locally freezing selected portions of the organ; (b) a guiding element including a net of apertures for inserting the cryosurgical probes therethrough; and (c) an imaging device for providing a set of images, the images being for providing information on specific planes located at specific depths within the organ, each of said images including a net of marks being correlated to the net of apertures of the guiding element, wherein the marks represent the locations of ice-balls which may be formed by the cryosurgical probes when introduced through said apertures of the guiding element to said distinct depths within the organ.

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