Patent · US Active

Cryogenic system

US8551081B2 · kind B2 · utility

4Cited by
20References
21Claims
0Family size

Assignee

Inventors

Key dates

Filing dateOct 3, 2010
Grant dateOct 8, 2013
Priority date—
Expiry dateNov 29, 2030

Classification

  • Technology area (CPC A)Human Necessities
  • CPC primaryA61B18/02
  • WIPO fieldMedical technology
  • WIPO sectorInstruments

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.