公开(公告)号：US5860971A

公开(公告)日：1999-01-19

申请号：US862542

申请日：1997-05-23

Applicant: Brian Kevin Roderick Clarke

Inventor： Brian Kevin Roderick Clarke

IPC: A61B18/00 ,  A61B18/02 ,  F25D3/10 ,  F25D21/06 ,  A61B17/36

CPC classification number: A61B18/02 ,  A61B2018/00041 ,  F25D21/06 ,  F25D3/10

Abstract: Apparatus is described for feeding a cryosurgical device by passing a liquid cryogen (e.g. liquid nitrogen) through the device to produce cooling by vaporization, and to enable thawing of the device by passing a heated inert thaw gas (e.g. nitrogen gas) through the device when the liquid cryogen is turned off. The thaw gas is passed through the device in the same direction of flow as the liquid cryogen. The apparatus can supply a plurality of cryosurgical devices, and provide independent control of cryogen and thaw for each probe. Novel valve arrangements are also disclosed for controlling the supply of liquid cryogen and the supply of the thaw gas.

Abstract translation: 描述了用于通过使液体冷冻剂（例如液氮）通过装置以通过蒸发来产生冷却来供给冷冻手术装置的装置，并且通过使加热的惰性解冻气体（例如氮气）通过装置来解冻装置， 液体冷冻剂关闭。 解冻气体以与液体冷冻剂相同的流动方向通过装置。 该装置可以供应多个冷冻手术装置，并且为每个探针提供冷冻剂和解冻的独立控制。 还公开了新颖的阀装置，用于控制液体冷冻剂的供应和解冻气体的供应。