GB1441549A - Electrically heated surgical cutting instrument - Google Patents

Electrically heated surgical cutting instrument

Info

Publication number
GB1441549A
GB1441549A GB2259274A GB2259274A GB1441549A GB 1441549 A GB1441549 A GB 1441549A GB 2259274 A GB2259274 A GB 2259274A GB 2259274 A GB2259274 A GB 2259274A GB 1441549 A GB1441549 A GB 1441549A
Authority
GB
United Kingdom
Prior art keywords
temperature
circuit
control circuit
set value
bridge
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
GB2259274A
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.)
SHAW F ROBERT
Original Assignee
SHAW F ROBERT
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 SHAW F ROBERT filed Critical SHAW F ROBERT
Publication of GB1441549A publication Critical patent/GB1441549A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
    • G05D23/2401—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor using a heating element as a sensing element
    • 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
    • A61B18/08—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by means of electrically-heated probes
    • 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
    • A61B18/08—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by means of electrically-heated probes
    • A61B18/082—Probes or electrodes therefor

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Plasma & Fusion (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Surgical Instruments (AREA)
  • Control Of Temperature (AREA)

Abstract

1441549 Automatic control of temperature R F SHAW 21 May 1974 22592/74 Heading G3R [Also in Division A5] An automatic temperature control circuit 11 for maintaining the temperature of an electrically conductive element 13, which forms the tissuecutting edge of a surgical instrument, at a constant value in the range of 300-1000‹C, comprises a bridge circuit into one arm of which is connected said element, the bridge circuit having one pair of terminals connected through a control circuit to the secondary winding 27 of a transformer 29 and a second pair of terminals connected to a bridgebalance sensing circuit, said sensing circuit also being connected to the control circuit to alter the electrical current applied to the bridge circuit when the temperature of element 13 alters resulting in a change in its resistance which unsettles the bridge. The control circuit comprises rectifiers 21, 23 the conduction angle of which is increased to increase the power applied to element 13 if the temperature thereof is below a set value. If the temperature of the element is above the set value, the power supplied to the element 13 is decreased until the set value is reached. Alternatively, the signal from a thermocouple sensor on or near the element may be used to control the power supplied to the element.
GB2259274A 1967-11-09 1974-05-21 Electrically heated surgical cutting instrument Expired GB1441549A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US68173767A 1967-11-09 1967-11-09

Publications (1)

Publication Number Publication Date
GB1441549A true GB1441549A (en) 1976-07-07

Family

ID=24736566

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2259274A Expired GB1441549A (en) 1967-11-09 1974-05-21 Electrically heated surgical cutting instrument

Country Status (8)

Country Link
US (1) USRE30190E (en)
AU (1) AU461384B2 (en)
BE (1) BE818178A (en)
DE (1) DE2423537C3 (en)
FR (1) FR2272635B1 (en)
GB (1) GB1441549A (en)
NL (1) NL158698B (en)
SU (1) SU849983A3 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129584A (en) * 1982-10-01 1984-05-16 Gen Electric Phase control circuit for low voltage load
GB2150713A (en) * 1983-12-03 1985-07-03 Ki Z Elektrobytpribor Temperature regulator
US4815462A (en) * 1987-04-06 1989-03-28 Clark Vickie J Lipectomy device
USRE34556E (en) * 1985-01-23 1994-03-01 Smith & Nephew Dyonics Inc. Surgical system for powered instruments
US5749885A (en) * 1995-10-02 1998-05-12 Smith & Nephew, Inc. Surgical instrument with embedded coding element

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2724558C3 (en) * 1977-05-31 1979-12-06 Dr. Karl Thomae Gmbh, 7950 Biberach Thermistor circuit for a surgical cutting and / or coagulation instrument
US6494882B1 (en) * 2000-07-25 2002-12-17 Verimetra, Inc. Cutting instrument having integrated sensors
US6740085B2 (en) * 2000-11-16 2004-05-25 Olympus Corporation Heating treatment system
US8506561B2 (en) 2009-04-17 2013-08-13 Domain Surgical, Inc. Catheter with inductively heated regions
US9107666B2 (en) 2009-04-17 2015-08-18 Domain Surgical, Inc. Thermal resecting loop
US9131977B2 (en) 2009-04-17 2015-09-15 Domain Surgical, Inc. Layered ferromagnetic coated conductor thermal surgical tool
US9265556B2 (en) 2009-04-17 2016-02-23 Domain Surgical, Inc. Thermally adjustable surgical tool, balloon catheters and sculpting of biologic materials
US9078655B2 (en) 2009-04-17 2015-07-14 Domain Surgical, Inc. Heated balloon catheter
US8840609B2 (en) 2010-07-23 2014-09-23 Conmed Corporation Tissue fusion system and method of performing a functional verification test
EP2704657A4 (en) 2011-04-08 2014-12-31 Domain Surgical Inc Impedance matching circuit
US8932279B2 (en) 2011-04-08 2015-01-13 Domain Surgical, Inc. System and method for cooling of a heated surgical instrument and/or surgical site and treating tissue
WO2012158722A2 (en) 2011-05-16 2012-11-22 Mcnally, David, J. Surgical instrument guide
US9526558B2 (en) 2011-09-13 2016-12-27 Domain Surgical, Inc. Sealing and/or cutting instrument
ES2831761T3 (en) 2011-12-06 2021-06-09 Domain Surgical Inc System and method for controlling power supply to a surgical instrument
US10357306B2 (en) 2014-05-14 2019-07-23 Domain Surgical, Inc. Planar ferromagnetic coated surgical tip and method for making

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US359506A (en) * 1887-03-15 David h
US1794296A (en) * 1927-08-24 1931-02-24 Mortimer N Hyams Surgical instrument
US1735271A (en) * 1928-03-14 1929-11-12 Sutten H Groff Diathermy knife
US1930214A (en) * 1931-03-23 1933-10-10 Wappler Frederick Charles Surgical electrode
US2012937A (en) * 1934-11-27 1935-09-03 George H Beuoy Electrical caponizing forceps
US2012938A (en) * 1934-11-27 1935-09-03 George H Beuoy Electrical caponizing knife
US2120598A (en) * 1937-03-06 1938-06-14 George H Beuoy Electrical cutting instrument
US2795697A (en) * 1949-06-11 1957-06-11 Westinghouse Electric Corp Temperature control
US2917614A (en) * 1957-09-18 1959-12-15 Vincent J Caliri Cauterizing device
US3234356A (en) * 1963-05-07 1966-02-08 Raymond F Babb Electrically heated medical implement
US3526750A (en) * 1967-06-02 1970-09-01 William J Siegel Thermal tool

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129584A (en) * 1982-10-01 1984-05-16 Gen Electric Phase control circuit for low voltage load
GB2150713A (en) * 1983-12-03 1985-07-03 Ki Z Elektrobytpribor Temperature regulator
USRE34556E (en) * 1985-01-23 1994-03-01 Smith & Nephew Dyonics Inc. Surgical system for powered instruments
US4815462A (en) * 1987-04-06 1989-03-28 Clark Vickie J Lipectomy device
US5749885A (en) * 1995-10-02 1998-05-12 Smith & Nephew, Inc. Surgical instrument with embedded coding element

Also Published As

Publication number Publication date
NL7409929A (en) 1976-01-27
AU7105274A (en) 1975-05-22
SU849983A3 (en) 1981-07-23
AU461384B2 (en) 1975-05-22
BE818178A (en) 1974-11-18
FR2272635B1 (en) 1977-06-24
NL158698B (en) 1978-12-15
DE2423537B2 (en) 1977-07-28
FR2272635A1 (en) 1975-12-26
DE2423537A1 (en) 1975-11-20
USRE30190E (en) 1980-01-15
DE2423537C3 (en) 1978-03-23

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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