Surgery – Instruments – Cyrogenic application
Patent
1997-05-23
1999-01-19
Buiz, Michael
Surgery
Instruments
Cyrogenic application
606 20, 606 22, 606 23, A61B 1736
Patent
active
058609717
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.
REFERENCES:
patent: Re28657 (1975-12-01), Barger et al.
patent: 3613689 (1971-10-01), Crump et al.
patent: 3913581 (1975-10-01), Ritson et al.
patent: 3993075 (1976-11-01), Lisenbee et al.
patent: 4018227 (1977-04-01), Wallach
patent: 4063560 (1977-12-01), Thomas et al.
patent: 4206760 (1980-06-01), Davis
patent: 4275734 (1981-06-01), Mitchiner
patent: 4278090 (1981-07-01), van Gerven
patent: 4280499 (1981-07-01), Squazzi
patent: 4348873 (1982-09-01), Yamauchi
patent: 4377168 (1983-03-01), Rzasa et al.
patent: 4519389 (1985-05-01), Gudkin et al.
patent: 4946460 (1990-08-01), Merry et al.
patent: 5108390 (1992-04-01), Potocky et al.
patent: 5224943 (1993-07-01), Goddard
Buiz Michael
Spembly Cryosurgery Limited
Woo Julian W.
LandOfFree
Thawing of cryosurgical apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Thawing of cryosurgical apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thawing of cryosurgical apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1243622