GB1438759A - Cryo-surgical apparatus - Google Patents

Cryo-surgical apparatus

Info

Publication number
GB1438759A
GB1438759A GB2591072A GB2591072A GB1438759A GB 1438759 A GB1438759 A GB 1438759A GB 2591072 A GB2591072 A GB 2591072A GB 2591072 A GB2591072 A GB 2591072A GB 1438759 A GB1438759 A GB 1438759A
Authority
GB
United Kingdom
Prior art keywords
valve
conduit
bore
cavity
refrigerant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2591072A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Spembly Ltd
Original Assignee
Spembly Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Spembly Ltd filed Critical Spembly Ltd
Priority to GB2591072A priority Critical patent/GB1438759A/en
Priority to US366004A priority patent/US3913581A/en
Publication of GB1438759A publication Critical patent/GB1438759A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
    • F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/02—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/02—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using Joule-Thompson effect; using vortex effect
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
    • A61B2018/00041—Heating, e.g. defrosting

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Otolaryngology (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)
  • Jib Cranes (AREA)

Abstract

1438759 Refrigerating apparatus SPEMBLY Ltd 1 June 1973 [2 June 1972] 25910/72 Heading F4H [Also in Division A5] Crysourgical apparatus comprises a body 1, Fig. 1, of, e.g. stainless steel enclosing a cavity having a wall 2 of high conductivity, and operates in cooling mode wherein cooling is due in the main to Joule-Thomson expansion of a gaseous refrigerant or in the main to evaporation of a liquid refrigerant, in the cavity. In the cooling mode, a foot-operated valve V1 in its depressed position connects the pressurized source 12 to the conduit 3 into the cavity and thence through conduit 7 and hose 8 to atmosphere. In a warming mode valve V1 is returned by a spring to the upper position, as shown, and gas now passes through circuit 7 to the cavity, where it condenses under pressure. Uncondensed gas passes through orifice 3A and conduit 3 to atmosphere. In modifications, two- or three-position valves may be used, using a third or rest position in which the apparatus is neither cooled nor warmed. A pneumatic timecontrolled detent (18), Fig. 7 (not shown), may hold the valve (V4) in warming mode for a period before moving to the "rest" position. The valve may be in two parts (V5A), (V5B), Figs. 8, 8A, 8B (not shown), one part having a movable sleeve (31) and a pneumatic time delay (38) is incorporated. As shown in Fig. 9 the apparatus may include a shuttle valve member 55 slidable in a bore 51G in a body member 51 and having a sealing ring 56, so that the valve member 55 may be moved by gas pressure to the right in Fig. 9 to make sealing contact with a lip 51C fromed round a bore 51D in the body, thus closing an exhaust passage 51E in the warming mode. At the other end of the bore is a sleeve 52 which receives a conduit 53 passing through the apparatus and through a bore 55A in valve member 55. Control of this instrument is by a two-position valve (V6) connected to a single source of refrigerant, Fig. 10 (not shown). Alternatively, there are two sources (61), (62) of refrigerant, Fig. 11 (not shown), one gaseous and one liquid, and two two-position valves (V7) and (V8), one controlling the other.
GB2591072A 1972-06-02 1972-06-02 Cryo-surgical apparatus Expired GB1438759A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2591072A GB1438759A (en) 1972-06-02 1972-06-02 Cryo-surgical apparatus
US366004A US3913581A (en) 1972-06-02 1973-06-01 Cryogenic apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2591072A GB1438759A (en) 1972-06-02 1972-06-02 Cryo-surgical apparatus

Publications (1)

Publication Number Publication Date
GB1438759A true GB1438759A (en) 1976-06-09

Family

ID=10235329

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2591072A Expired GB1438759A (en) 1972-06-02 1972-06-02 Cryo-surgical apparatus

Country Status (2)

Country Link
US (1) US3913581A (en)
GB (1) GB1438759A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2189586A (en) * 1986-04-18 1987-10-28 Moran Douglas Eng Improvements relating to apparatus and methods of transferring heat
GB2344873A (en) * 1998-12-14 2000-06-21 Spembly Medical Ltd Cryogen supply apparatus

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* Cited by examiner, † Cited by third party
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US4146030A (en) * 1976-12-27 1979-03-27 Dynatech Corporation Cryosurgical instrument
US4275734A (en) * 1977-08-12 1981-06-30 Valleylab, Inc. Cryosurgical apparatus and method
US4236518A (en) * 1978-04-14 1980-12-02 Gyne-Tech Instrument Corporation Cryogenic device selectively operable in a continuous freezing mode, a continuous thawing mode or a combination thereof
US4377168A (en) * 1981-02-27 1983-03-22 Wallach Surgical Instruments, Inc. Cryosurgical instrument
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US5139496A (en) * 1990-12-20 1992-08-18 Hed Aharon Z Ultrasonic freeze ablation catheters and probes
US5860971A (en) * 1991-11-05 1999-01-19 Spembly Cryosurgery Limited Thawing of cryosurgical apparatus
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2189586A (en) * 1986-04-18 1987-10-28 Moran Douglas Eng Improvements relating to apparatus and methods of transferring heat
GB2344873A (en) * 1998-12-14 2000-06-21 Spembly Medical Ltd Cryogen supply apparatus

Also Published As

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee