[특허]Miniature mixed gas refrigeration system

[미국특허] Miniature mixed gas refrigeration system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F25B-019/02
출원번호	US-0542123 (1995-10-12)
발명자 / 주소	Dobak III John D. Radebaugh Ray Huber Marcia L. Marquardt Eric D.
출원인 / 주소	The United States of America as represented by the Secretary of Commerce
대리인 / 주소	Spinks
인용정보	피인용 횟수 : 16 인용 특허 : 19

초록 ▼

A miniature mixed gas refrigeration system is disclosed, having a coaxial catheter with an inner high pressure supply lumen and an outer low pressure return lumen. The gas mixture is pressurized by a compressor to a pressure less than 420 psia, for safety reasons. The distal portion of the outer lumen contains a micro-miniature heat exchanger constructed of laminated plates or sheets. The plates or sheets establish high pressure and low pressure passageways, with high surface area, having a tortuous path for the gas flow to maximize heat exchange. The high pressure outlet of the heat exchanger is connected to a Joule-Thomson expansion element where the high pressure gas is expanded isenthalpically to a lower temperature at least as low as 180K. This low temperature gas cools a heat transfer element mounted in the outer wall of the catheter, to cool an external object. Return gas flows back through the heat exchanger to pre-cool the incoming high pressure gas mixture.

대표청구항 ▼

[ We claim:] [1.] A miniature refrigeration system, comprising:a compressor for pressurizing a gas mixture to a pressure of approximately 420 psia, said compressor having an inlet and an outlet;a hollow elongated supply tube, said supply tube having a proximal end and a distal end, said proximal end of said supply tube being connectable to said outlet of said compressor;a hollow elongated return tube disposable substantially coaxially over said supply tube, said return tube having a proximal end and a distal end, said proximal end of said return tube being connectable to said inlet of said compressor;a laminated counterflow heat exchanger mounted within said return tube, adjacent to said distal end of said return tube, said heat exchanger having a high pressure passageway and a low pressure passageway, said high pressure passageway having at least one proximal port and at least one distal port, said at least one proximal port of said high pressure passageway being connected to said distal end of said supply tube, said low pressure passageway having at least one distal port and at least one proximal port, said at least one proximal port of said low pressure passageway being connected with a lumen of said return tubes, said high pressure passageway and said low pressure passageway each following a respective tortuous flow path with a substantial portion of each said flow path being transverse to a longitudinal axis of said heat exchanger, to create turbulent flow;a Joule-Thomson expansion element mounted within said return tube, said expansion element being connected to said distal port of said high pressure passageway of said heat exchanger for isenthalpically expanding said gas mixture from said higher pressure to a lower pressure, said expanded gas mixture thereby cooling to a temperature of no greater than 183K, said expanded gas mixture being in fluid flow communication with said at least one distal port of said low pressure passageway; anda heat transfer body mounted to said distal end of said return tube adjacent said expansion element, said body having an inner surface exposed to said expanded gas mixture and an outer surface exposed to ambient, for transferring heat from said outer surface of said body to said inner surface of said body.

이 특허에 인용된 특허 (19) 인용/피인용 타임라인 분석

Milder Fredric L. (Brookline MA) Hed A Ze\ev (Nashua NH), Catheter for ice mapping and ablation.
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Boiarski Michael (Moscow RUX) Longsworth Ralph C. (Allentown PA) Yudin Boris (Moscow RUX) Hill Dennis H. (Pottstown PA) Klusmier Lawrence A. (Germansville PA) Khatri Ajay N. (Bethlehem PA) Owoc Antho, Closed cycle cryogenic refrigeration system with automatic variable flow area throttling device.
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Friedman Peter L. (Rowley MA) Wang Paul (Brookline MA) Cravalho Ernest G. (Wellesley Hills MA), Cryoablation catheter and method of performing cryoablation.
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Milder Fredric L. (Brookline MA), Cryogenic catheter.
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Hersey Devin W. (Kent WA), Cryogenic cooling system with precooling stage.
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Milder Fredric L. (Brookline MA), Cryogenic mapping and ablation catheter.
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Longsworth Ralph C. (Allentown PA), Cryogenic refrigerator with single stage compressor.
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Dobak ; III John D. (6273 Caminito Del Oeste San Diego CA 92111), Cryosurgical instrument.
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Rzasa Ronald P. (Fairfield CT) Wallach Ronald M. (Westport CT), Cryosurgical instrument.
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Lloyd John W. (The Gate House Eynsham ; Oxfordshire GB2) Wild David E. (Crawley GB2) Evatt Humphry R. (Stockbridge GB2), Cryosurgical probe.
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Varney Kelvin J. (Andover GB2), Cryosurgical probe.
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Fowle Arthur A. (Brewster MA), Entrained cryogenic droplet transfer method and cryosurgical instrument.
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Steyert William A. (Center Valley PA) Longsworth Ralph C. (Allentown PA), Heat exchanger for a fast cooldown cryostat.
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Savage Steven D. (Brooklyn Center MN) Brucker Gregory G. (Minneapolis MN), Laser catheter with monitor and dissolvable tip.
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Mitchiner Robert K. (Boulder CO) Russell Wayne A. (Chelmsford MA), Method and means for controlling the freeze zone of a cryosurgical probe.
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Hendricks John B. (Huntsville AL), Perforated plate heat exchanger and method of fabrication.
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Greenthal Steven (Newport Beach CA), Remote refrigerative probe.
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Edwards Stuart D. (Los Altos CA) Jackson Jerome (Sunnyvale CA) Stern Roger A. (Cupertino CA) Morse Thomas M. (San Jose CA) Owens Patrick M. (Cupertino CA), Steerable antenna systems for cardiac ablation that minimize tissue damage and blood coagulation due to conductive heati.
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Hed Aharon Z. (12 Wagon Trail Dr. Nashua NH 03062), Ultrasonic freeze ablation catheters and probes.
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이 특허를 인용한 특허 (16) 인용/피인용 타임라인 분석

Kudaravalli, Ravikumar V.; Li, Hong, Control system for cryosurgery.
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Bart-Jan Korteling ; Hendrikus Willem Wegereef NL, Cryoablation catheter for long lesion ablations.
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Devens, Jr., Douglas A.; Vancelette, David W.; Perkins, Michael W. V., Cryoprobe with coaxial chambers.
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Vancelette,David W.; van der Walt,Nicholas R.; Xiao,Jia Hua; Snitkin,Eva S., Cryosurgical devices and methods for endometrial ablation.
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van der Walt,Nicholas R.; Xiao,Jia Hua; Vancelette,David W., Cryosurgical devices for endometrial ablation.
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Vancelette, David W.; Devens, Jr., Douglas A., Disposable sheath with replaceable console probes for cryosurgery.
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Yaron, Ran, Engine with liquid piston.
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Abboud, Marwan; Mahrouche, Rachid; Mihalik, Teresa Ann; Harmouche, Chadi; Pageard, Jean-Luc; Lehmann, John W., Fluid control system for a medical device.
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Haas, Michael; Bailey, Richard; Krentel, Jerome F., Hand-held, heat sink cryoprobe, system for heat extraction thereof, and method therefore.
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Abboud, Marwan; Mahrouche, Rachid; Mihalik, Teresa Ann; Harmouche, Chadi; Desrochers, Gilles, Method and apparatus for inflating and deflating balloon catheters.
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Abboud, Marwan; Mahrouche, Rachid; Mihalik, Teresa Ann; Harmouche, Chadi; Monger, Eric, Method and apparatus for inflating and deflating balloon catheters.
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Abboud, Marwan; Mahrouche, Rachid; Mihalik, Teresa; Harmouche, Chadi; Monger, Eric, Method and apparatus for inflating and deflating balloon catheters.
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Pérez López, Gustavo; Nacenta Anmella, José María, Methods and apparatus for cooling liquids in portable containers.
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Yaron, Ran, Miniature refrigeration system for cryothermal ablation catheter.
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Ryba, Eric; Lentz, David J.; Kudaravalli, Ravikumar; Li, Hong, Refrigeration source for a cryoblation catheter.
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Sobel,Larry D.; Capara,Jeff; Jenia,Justin C., Stacked-plate gas-expansion cooler assembly, fabrication method, and use.
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[미국특허] Miniature mixed gas refrigeration system 원문보기