SU849983A3 - Electrosurgical tool - Google Patents

Electrosurgical tool Download PDF

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Publication number
SU849983A3
SU849983A3 SU742055669A SU2055669A SU849983A3 SU 849983 A3 SU849983 A3 SU 849983A3 SU 742055669 A SU742055669 A SU 742055669A SU 2055669 A SU2055669 A SU 2055669A SU 849983 A3 SU849983 A3 SU 849983A3
Authority
SU
USSR - Soviet Union
Prior art keywords
temperature
circuit
control circuit
set value
bridge
Prior art date
Application number
SU742055669A
Other languages
Russian (ru)
Inventor
М.Кейдж Джон
Ф.Шар Роберт
Е.Стофт Поль
Original Assignee
Роберт Фрэнсис Шоу (Фирма)
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 Роберт Фрэнсис Шоу (Фирма) filed Critical Роберт Фрэнсис Шоу (Фирма)
Priority to SU742055669A priority Critical patent/SU849983A3/en
Application granted granted Critical
Publication of SU849983A3 publication Critical patent/SU849983A3/en

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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

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.

Description

1one

Изобретение относитс  к медицинской технике, а именно к электрохирургическим инструментам.The invention relates to medical technology, namely to electrosurgical instruments.

Известен-электрохирургический инструмент, содержащий рабочее лезвие с режущей кромкой, руко тку дл  закреплени  рабочего лезви , нагревательный элемент и электрические проводники дл  соединени  с авторегулируемым источником электрического тока 1 .A known electrosurgical instrument containing a working blade with a cutting edge, a handle for fixing the working blade, a heating element and electrical conductors for connection with an auto-adjustable source of electrical current 1.

.Недостатком известного устройства  вл етс  невозможность поддержани  заданной температуры по всей длине режущей кромки лезви .A disadvantage of the prior art is the impossibility of maintaining the desired temperature along the entire length of the cutting edge of the blade.

Цель изобретени  - обеспечение и поддержание- заданной температуры терморегул ции по всей длине режущей кромки.The purpose of the invention is to provide and maintain a predetermined temperature of thermoregulation along the entire length of the cutting edge.

Указанна  цель достигаетс  тем, что нагревательный элемент выполнен в виде отдельных сегментов, располог женных по всей длине режущей кромки и имеющих с ней тепловой контакт,, причем каждый сегмент выполнен из материала с отрицательным температурным коэффициентом сопротивлени  и соединен с помощью электрических проврдников с авторегулируемым источНИКОМ электрического тока. Причем рабочее лезвие выполнено из электроизол ционного материала, премущественно керамики.This goal is achieved by the fact that the heating element is made in the form of individual segments located along the entire length of the cutting edge and having thermal contact with it, each segment being made of a material with a negative temperature coefficient of resistance and connected using electrical controllers with an automatic electrical source. current. Moreover, the working blade is made of electrically insulating material, mainly ceramics.

На фиг, 1 изображен электрохирургический инструмент, общий вид; на фиг, 2 - блок-схема регулировани  температуры инструмента.Fig, 1 shows an electrosurgical instrument, a general view; Fig. 2 is a block diagram of the temperature control of the instrument.

Устройство содержит рабочее лез10 вие 1, выполненное из керамики, руко тку 2 дл  закреплени  лезви  1, нагревательный элемент 3, выполненный в виде отдельных сегментов, расположенных по всей длине режущей кромки The device contains a working blade 10, made of ceramic, a handle 2 for fixing the blade 1, a heating element 3, made in the form of separate segments along the entire length of the cutting edge

15 лезви  и имеющих с ней тепловой контакт , электрические проводники 4 дл  соединени  с авторегулируемым источником 5 электрического тока,15 blades and having a thermal contact with it, electrical conductors 4 for connection with an auto-adjustable source of electric current 5,

20 Устройство работает следукицим образом .20 The device works in the following way.

Нагревательный элемент 3 включен в мостовую схему fi, св занную проводниками 7 и 8 с управл емыми выпр мител ми 9 и 10,регул тором 11 и вторичной обмоткой трансформатора 12, Величина переменного сигнала,, подаваемого на элемент 3, определ етс  величиной проводимости выпр мителей 9 иThe heating element 3 is included in the bridge circuit fi, connected by conductors 7 and 8 with controlled rectifiers 9 and 10, controller 11 and the secondary winding of transformer 12, the magnitude of the alternating signal, supplied to element 3, is determined by the conductivity of the rectifiers 9 and

30 10 Величина сигнала, подаваемого на30 10 Signal amount sent to

Claims (2)

Формула изобретенияClaim 1. Электрохирургический инструмент, содержащий рабочее лезвие с режущей1. Electrosurgical instrument containing a working blade with a cutting 5 кромкой, рукоятку для закрепления рабочего лезвия, нагревательный элемент и электрические проводники для соединения с авторёгулируемым источником электрического тока, о т л и 10 чающийся тем, ^то, с целью обеспечения и поддержания заданной температуры термокоагуляции по всей длине режущей кромки,в нем нагревательный элемент выполнен в виде от15 дельных сегментов, расположенных по всей длине режущей кромки и имеющих с ней тепловой контакт, причем каждый сегмент выполнен из материала с отрицательным температурным коэф20 фициентом сопротивления и соединен с помощью электрических проводников с авторегулируемым источником электрического тока.5 edge, a handle for securing the working blade, a heating element and electrical conductors for connecting to an autoregulated source of electric current, which is necessary to ensure and maintain a given temperature of thermocoagulation along the entire length of the cutting edge, in it the element is made in the form of 15 separate segments located along the entire length of the cutting edge and having thermal contact with it, each segment being made of a material with a negative temperature coefficient of resistance leniya and connected with the help of electrical conductors with an auto-regulated source of electric current. 2. Инструмент по п.1, отличающийся тем, что рабочее лезвие выполнено из электроизоляци- ными или положительными температурными коэффициентами, система управления имеет реверсирующий переключатель 22.2. The tool according to claim 1, characterized in that the working blade is made of insulating or positive temperature coefficients, the control system has a reversing switch 22. Предлагаемое устройство обеспечивает поддержание заданной темпера онного материала, преимущественно керамики.The proposed device maintains a given temperature material, mainly ceramics.
SU742055669A 1967-11-09 1974-07-29 Electrosurgical tool SU849983A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU742055669A SU849983A3 (en) 1967-11-09 1974-07-29 Electrosurgical tool

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US68173767A 1967-11-09 1967-11-09
SU742055669A SU849983A3 (en) 1967-11-09 1974-07-29 Electrosurgical tool

Publications (1)

Publication Number Publication Date
SU849983A3 true SU849983A3 (en) 1981-07-23

Family

ID=24736566

Family Applications (1)

Application Number Title Priority Date Filing Date
SU742055669A SU849983A3 (en) 1967-11-09 1974-07-29 Electrosurgical tool

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)

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DE2724558C3 (en) * 1977-05-31 1979-12-06 Dr. Karl Thomae Gmbh, 7950 Biberach Thermistor circuit for a surgical cutting and / or coagulation instrument
US4461990A (en) * 1982-10-01 1984-07-24 General Electric Company Phase control circuit for low voltage load
GB2150713B (en) * 1983-12-03 1987-11-11 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
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
US8414569B2 (en) 2009-04-17 2013-04-09 Domain Surgical, Inc. Method of treatment with multi-mode surgical tool
US9131977B2 (en) 2009-04-17 2015-09-15 Domain Surgical, Inc. Layered ferromagnetic coated conductor thermal surgical tool
US9078655B2 (en) 2009-04-17 2015-07-14 Domain Surgical, Inc. Heated balloon catheter
US9107666B2 (en) 2009-04-17 2015-08-18 Domain Surgical, Inc. Thermal resecting loop
US9265556B2 (en) 2009-04-17 2016-02-23 Domain Surgical, Inc. Thermally adjustable surgical tool, balloon catheters and sculpting of biologic materials
US8840609B2 (en) 2010-07-23 2014-09-23 Conmed Corporation Tissue fusion system and method of performing a functional verification test
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
WO2013106036A2 (en) 2011-04-08 2013-07-18 Preston Manwaring Impedance matching circuit
US8858544B2 (en) 2011-05-16 2014-10-14 Domain Surgical, Inc. Surgical instrument guide
WO2013040255A2 (en) 2011-09-13 2013-03-21 Domain Surgical, Inc. Sealing and/or cutting instrument
IN2014MN00995A (en) 2011-12-06 2015-04-24 Domain Surgical Inc
US10357306B2 (en) 2014-05-14 2019-07-23 Domain Surgical, Inc. Planar ferromagnetic coated surgical tip and method for making

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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
US2012938A (en) * 1934-11-27 1935-09-03 George H Beuoy Electrical caponizing knife
US2012937A (en) * 1934-11-27 1935-09-03 George H Beuoy Electrical caponizing forceps
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

Also Published As

Publication number Publication date
FR2272635A1 (en) 1975-12-26
NL7409929A (en) 1976-01-27
NL158698B (en) 1978-12-15
BE818178A (en) 1974-11-18
FR2272635B1 (en) 1977-06-24
DE2423537B2 (en) 1977-07-28
DE2423537A1 (en) 1975-11-20
GB1441549A (en) 1976-07-07
AU7105274A (en) 1975-05-22
AU461384B2 (en) 1975-05-22
USRE30190E (en) 1980-01-15
DE2423537C3 (en) 1978-03-23

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