GB1342348A - Cryosurgical instruments - Google Patents

Cryosurgical instruments

Info

Publication number
GB1342348A
GB1342348A GB1342348DA GB1342348A GB 1342348 A GB1342348 A GB 1342348A GB 1342348D A GB1342348D A GB 1342348DA GB 1342348 A GB1342348 A GB 1342348A
Authority
GB
United Kingdom
Prior art keywords
sleeve
area
probe
tissue
gas
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
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 Technical Procucts Ltd
Original Assignee
Spembly Technical Procucts 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 Technical Procucts Ltd filed Critical Spembly Technical Procucts Ltd
Publication of GB1342348A publication Critical patent/GB1342348A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
    • 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
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/06—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating caused by chemical reaction, e.g. moxaburners
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00973—Surgical instruments, devices or methods, e.g. tourniquets pedal-operated
    • 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
    • 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
    • A61B2018/00053—Mechanical features of the instrument of device
    • A61B2018/00059—Material properties
    • A61B2018/00089—Thermal conductivity
    • A61B2018/00095—Thermal conductivity high, i.e. heat conducting
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/00727—Apparatus for retinal reattachment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/00736—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments

Abstract

1342348 Cryosurgical instruments SPEMBLY TECHNICAL PRODUCTS Ltd 19 April 1971 [11 March 1970] 11709/70 Heading A5R A cryosurgical instrument comprises a thermally highly conductive probe 34 shaped to present an area which may be placed in contact with an operable tissue surface, with means for controllably refrigerating said area to facilitate congelation of the tissue in contact with said area, combined with a sleeve 39, encircling the probe and thermally insulated therefrom, the sleeve being arranged as to limit the extent of the zone of congealed tissue. The probe may take the form of a hollow tube 34, closed at one end to form a working area 34A, this working area being cooled by cold gas impinging on the inside surface of the tube, the cold gas being produced by allowing high pressure gas to escape from a feed duct 36 via a restricted orifice 36A, where Jouli-Thomson cooling of the gas takes place. The sleeve may be provided with some heating means. In the embodiment shown the sleeve 39 is a good thermal conductor and is thermally insulated from the probe near its working end by a plastics sleeve 38. The upper end of the sleeve is fixed into a ferrule 33 around which is fitted an electric heater 40. The current to the heater is switched on simultaneously with the high pressure gas. The suggested material for the sleeve and ferrule is silver. Two alternative heating means suggested are the use of exothermically reacting substances or fins to extend out from the sleeve.
GB1342348D 1971-04-19 1971-04-19 Cryosurgical instruments Expired GB1342348A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1170970 1971-04-19

Publications (1)

Publication Number Publication Date
GB1342348A true GB1342348A (en) 1974-01-03

Family

ID=9991248

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1342348D Expired GB1342348A (en) 1971-04-19 1971-04-19 Cryosurgical instruments

Country Status (1)

Country Link
GB (1) GB1342348A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4345598A (en) * 1980-03-07 1982-08-24 Vyzkumny Ustav Silnoproude Elektrotechniky Cryogenic apparatus for surgery
WO2009007963A1 (en) * 2007-07-09 2009-01-15 Arbel Medical Ltd. Cryosheath
CN113855212A (en) * 2021-10-28 2021-12-31 海杰亚（北京）医疗器械有限公司 Cold and hot ablation apparatus, cold and hot ablation system and control method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4345598A (en) * 1980-03-07 1982-08-24 Vyzkumny Ustav Silnoproude Elektrotechniky Cryogenic apparatus for surgery
WO2009007963A1 (en) * 2007-07-09 2009-01-15 Arbel Medical Ltd. Cryosheath
CN113855212A (en) * 2021-10-28 2021-12-31 海杰亚（北京）医疗器械有限公司 Cold and hot ablation apparatus, cold and hot ablation system and control method thereof
CN113855212B (en) * 2021-10-28 2023-04-07 海杰亚（北京）医疗器械有限公司 Cold and hot ablation apparatus, cold and hot ablation system and control method thereof

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee