A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 18/00 (2006.01) A61B 17/00 (2006.01) A61B 17/34 (2006.01) A61B 18/02 (2006.01) A61F 7/00 (2006.01) A61F 7/12 (2006.01)
Patent
CA 2371776
A cryosurgical probe (6) and method for treating cancer by cryosurgically destroying cancer cells by way of an ice ball (10) formed at the distal end (8) of the cryosurgical probe (6) and located in proximity to the cancerous tissue to be treated. The probe (6) is surrounded by a thermally insulating sheath (12, 14, 16, 20). By varying the length and thickness of the thermally insulating sheath (12, 14, 16, 20) as well as the length of the unsheathed distal tip (8) of the probe, the size and shape of the ice ball produced by the cryosurgical probe (6) can be tailored to correspond to the size, shape and location of the cancerous tissue so as to localize the cryogenic effect. Alternatively, the size and shape of the ice ball can be controlled by surrounding a cryosurgical probe (30) with a heated sheath (32) having a heating element (34) and a temperature sensor (38) to detect the temperature to which the sheath (32) is heated.
L'invention concerne une cryosonde (6) et une méthode de traitement du cancer par destruction cryochirurgique des cellules cancéreuses au moyen d'une bille de glace (10) formée à l'extrémité distale (8) de la cryosonde (6) et placée à proximité du tissu cancéreux à traiter. La sonde (6) est enveloppée d'une gaine thermo-isolante (12, 14, 16, 20). En modifiant la longueur et l'épaisseur de ladite gaine (12, 14, 16, 20) ainsi que la longueur de l'extrémité distale non enveloppée (8) de la sonde, on peut adapter la taille et la forme de la bille de glace produite par la cryosonde (6) selon la taille, la forme et l'emplacement du tissu cancéreux, de façon à localiser l'effet cryogénique. On peut éventuellement adapter la taille et la forme de la bille de glace en enveloppant la cryosonde (30) d'une gaine chauffée (32) dotée d'un élément chauffant (34) et d'un capteur de température (38) destiné à détecter la température à laquelle la gaine (32) est chauffée.
Chinn Douglas O.
Kirby Eades Gale Baker
LandOfFree
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