Cryogenic system

Details Cryogenic system Cryogenic system

2007-03-20

2007-03-20

Rollins, Rosiland (Department: 3739)

Surgery

Instruments

Cyrogenic application

C606S021000, C606S022000, C606S025000

Reexamination Certificate

active

10478937

ABSTRACT:
A cryosurgical system and method for supplying cryogen to a probe. The system including a container filled with cryogen and having bellows of a pump submerged within said cryogen. Conduits fluidly interconnect the bellows and a probe that is outside the container to permit the cryogen to be forced from the bellows to the probe upon activation of pump. A pressure relief valve is fluidly coupled to the conduits and positioned between the bellows and the probe. After initially forcing cryogen to the probe at a pressure that establishes a colligative-based sub-cooling of the liquid cryogen, the pressure relief valve is activated to lower the pressure of the cryogen to a running pressure.

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patent: 5957963 (1999-09-01), Dobak, III
patent: 6589234 (2003-07-01), Lalonde et al.

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