WO1994009714A1 - Outil de chauffe electrique - Google Patents

Outil de chauffe electrique Download PDF

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Publication number
WO1994009714A1
WO1994009714A1 PCT/GB1993/002253 GB9302253W WO9409714A1 WO 1994009714 A1 WO1994009714 A1 WO 1994009714A1 GB 9302253 W GB9302253 W GB 9302253W WO 9409714 A1 WO9409714 A1 WO 9409714A1
Authority
WO
WIPO (PCT)
Prior art keywords
heating
heating tool
tool
projecting
temperature
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.)
Ceased
Application number
PCT/GB1993/002253
Other languages
English (en)
Inventor
Charles Edward Taylor
Peter Smart
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.)
Individual
Original Assignee
Individual
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
Priority claimed from GB929223073A external-priority patent/GB9223073D0/en
Priority claimed from GB929223052A external-priority patent/GB9223052D0/en
Priority claimed from GB939305809A external-priority patent/GB9305809D0/en
Priority claimed from GB939317445A external-priority patent/GB9317445D0/en
Priority claimed from GB939319335A external-priority patent/GB9319335D0/en
Application filed by Individual filed Critical Individual
Priority to AU53751/94A priority Critical patent/AU5375194A/en
Publication of WO1994009714A1 publication Critical patent/WO1994009714A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • A61B18/04—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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/30—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
    • 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
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/00234—Surgical instruments, devices or methods for minimally invasive surgery
    • 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
    • A61B18/10—Power sources therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B2017/00017—Electrical control of surgical instruments
    • A61B2017/00022—Sensing or detecting at the treatment site
    • A61B2017/00084—Temperature
    • 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
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00642—Sensing and controlling the application of energy with feedback, i.e. closed loop control
    • 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
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00773—Sensed parameters
    • A61B2018/00791—Temperature
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design

Definitions

  • the present invention relates to an electrically operated heating tool suitable for melting, cutting and cauterising primarily in the dental, medical and veterinary fields, to a method of manufacture of such a tool and to its use in dental, medical, veterinary and general commercial fields.
  • the heating tool when used to melt and cut wax avoids the risk of burning associated with the current use of a metal knife heated in bunsen flame when latex gloves are worn.
  • the heating tool has additional advantages because in battery-powered form it is fully portable and can be used away from gas or mains electricity, and also provides a more controllable heat means for softening, shaping and moulding wax.
  • the cauterising effect of the heating tool when used at appropriate temperatures, achieves haemostasis by denaturation of protein. This results in coagulation in areas of tissue.
  • Modern diathermy machines have evolved to provide electrical currents in interrupted bursts to give haemostasis and in pure sine waves for cutting. There are hazards associated with such machines including earthing to produce a therrao electrical burn.
  • disadvantages which include lack of portability, because of the need for expensive and complicated circuitry, and difficulties with sterilization.
  • the cauterising heating tool - particularly when battery-powered - avoids these disadvantages and finds wide application in every day surgical procedures, key-hole surgery and dental surgery work to arrest gingival bleeding.
  • an electrically operated heating tool for melting, cutting and cauterisation for use in dental, medical, veterinary and general commercial fields in which there is provided a projecting heating means for melting, cutting and cauterising, having an electrically conducting heating path associated with a temperature-change detecting means, means for controlling the functions of the projecting means, and power source.
  • the electrically operated heating tool at certain lower temperatures functions to melt the substrate with which it is in contact and thereby achieves a cutting effect, for example, when used in the dental field at a suitable temperature to melt and "cut" dental wax (melting point around 70°C).
  • the temperatures are preset to those necessary to cut and cauterise tissue and is useful in surgery when the flow of blood is to be arrested after tissue severance.
  • the temperature control setting is such that the temperature increase assists cutting.
  • the tool according to the invention finds use in various technical fields, including general commercial such as sail making, hobbying, jewellery working and electronics assembly.
  • heating tool which is envisaged is tubular comprising an outer casing housing all components, preferably with a control switch and either or both fitted with a source of electrical power eg. batteries or connected to an alternative power source, such as mains electricity.
  • a source of electrical power eg. batteries or connected to an alternative power source, such as mains electricity.
  • the tool is ideal for use in the dental wax-melting technical area. This form is illustrated in Fig. 10.
  • the tool may comprise the heating means, suitably housed to facilitate handling and the power means and function controlling means conveniently remotely sited therefrom.
  • the tool may suitably be used in dental laboratories and in medical applications, such as key-hole surgery.
  • the heating means of the tool comprises a substrate which may be non-metallic, metallic, preferably coated in whole or in part with insulating material or a laminate of one or more metals and/or one or more non-metals.
  • the non-metallic support material used may be ceramic and/or polymeric and may suitably be a laminate or a ceramic partly or wholly encapsulated in a polymeric protective material which is stable at temperatures achieved on the heating means.
  • the non-metallic heating means may optionally be in association with a metallic or non-metallic support material.
  • the metal is insulated from the electrical conducting track and is preferably wholly or partly coated with or encapsulated in an insulating material for example polymeric material.
  • the heating means may be of any convenient size or shape.
  • the means is preferably in the form of a blade as illustrated in Fig. 1 although other shapes are envisaged.
  • the means may suitably be in the form of a bar or tube, and for cautery means may be other shapes as illustrated in Fig.2.
  • the means may be in the form of a blade, such as a scalpel blade or a loop, suitable for key ⁇ hole surgery work, as illustrated in Figs. 5, 7 and 8 respectively.
  • the heating means carries an electrically conducting heating path connected to a source of power, such as batteries or mains electricity.
  • the path is suitably constructed of conducting material eg. metallic, metallic oxides and salts to form a track connected to the power source.
  • the non-metallic heating means there may be deposited on the non-metallic heating means a carbon film and electrically-conducting metal-impregnated resin, for example, silver impregnated resin.
  • the projecting heating means such that at a required temperature, the heat generated is equal to the heat dissipated.
  • the non- metallic support for example, ceramic material, polymeric material or carbon fibres, which are coated in part with a conducting material eg. silver or silver-impregnated resin and in part with a carbon - or carbon-containing material, for example, a thin carbon film. It is necessary for both silver-containing material and carbon film to be attached firmly, or bonded, to the non-metallic substrate.
  • the carbon film preferably contains additives, suitably metallic compounds, for example, of barium, preferably barium titanate, which varies the electrical conductivity of the film using its temperature-variable electrical resistance property.
  • the projecting means possesses rapid heat-up and rapid cool-down. This property is achieved using the non- metallic substrate, metallic conducting means such as the silver-impregnated resin coated over a part of the substrate and carbon film material coated also over part of the substrate.
  • the projecting heating means may suitably be in the form of a blade coated with the silver-loaded epoxy resin on the shaft of the blade and a silver- loaded epoxy resin to which five to ten percent nickel chrome powder had been mixed, to coat the blade area. This increased the resistance of the epoxy resin and produced a positive temperature coe ficient.
  • the power source used to generate the heat may be any electrical means, but it has been found that the use of batteries, preferably rechargeable batteries, enables the device to be used in many different locations.
  • the rechargeable batteries are preferably those of the longer life, high powered type eg. Nicad batteries. These batteries are housed in an outer casing which is preferably fitted with a control switch.
  • the heating tool may be capable of being connected to the mains electricity or other suitable electrical source such as a car cigarette lighter socket, in such a way that the batteries are recharged readily, frequently or continuously.
  • the battery and other inner components may be easily removable, suitably on a slide-out holder, to permit sterilization of the casing by autoclaving or other means. This is illustrated in Fig. 10.
  • a further embodiment includes the provision of light means included in the casing to illuminate working areas, particularly in the mouth or during in vivo operations.
  • the batteries may be recharged through a suitably designed stand or holder, this stand/holder being preferably connected to the mains electricity in such a way and at such recharging points in the outer casing, that the batteries are recharged readily, frequently or continuously when the heating tool is on the stand.
  • the electronic controls are preferably, but not essentially, adjustable in such a way that the heating means is heated to the appropriate temperature for wax work, cautery work and/or electro surgery.
  • the projecting heating means may be constructed to any suitable size or shape for its purpose and certain shapes are illustrated in Fig. 2.
  • the temperature control of the projecting means may suitably be achieved using electronic means which comprises one or more of each of switch, transistor, dual comparator, thermistor, resistor, all on or connected to the projecting means.
  • Maximum temperature control is achieved by locating the thermistor close to the heating element and feeding back to the comparator, the temperature of the projecting means as a change in resistance.
  • the output of the comparator changes state when the preset temperature is reached, thereby completely turning off the switching transistor.
  • the comparator again changes state and turns the element on again to maintain the preset temperature, the duty cycle changing to meet demand, so conserving power.
  • a second comparator may be used in conjunction with a Zenner diode and LED to give an indication of low battery power and the need to recharge - in that form of apparatus which uses battery power rather than mains electricity.
  • the electronics may be located on or in close proximity to the projecting means, they may be conveniently sited remote from the projecting means via wires or other connecting means which carry the power to the cutting or melting means e.g. blade, and carrying back the temperature - sensing feedback, as illustrated in Figs.7 and 8.
  • the projecting heating means may suitably comprise a ceramic or other suitable support means for carrying the heating track and thermistor while in intimate or remote connection with it is a further means which comprises, for example, a PC board on or in which are located those other electronic and electrical co ponents necessary to effect the required heating, temperature control and where appropriate, movement, of the projecting means. Movement of the projecting means may be desirable in application of cautery e.g. key-hole surgery and this movement can be controlled using the remotely sited PC board or other electrical means.
  • This heating tool is suitable for use in many fields where delicate control of temperature is required, in association with large or extremely minute size of "cutting" area. These include hobbying, jewellery making, electronics assembly, sail making, as well as dental, medical and veterinary applications.
  • Fig.l 1 represents the carbon film
  • FIG. 2 represents the silver-containing resin.
  • Fig.2 represents various suitable shapes of projecting heating means.
  • Fig.3 illustrates the tool with the casing for the batteries exposed.
  • Fig.4 illustrates suitable circuitry for use in the heating tool illustrated in Fig.5 Mode of operation in Fig.4 and Fig.5
  • the blade resistance was approximately 1.6 ohms at 25°C. Operating at 3.5 - 4w the dissipation to maintain 110-120°C was approximately 1.5w.
  • the blade was a ceramic material partly coated with silver-loaded epoxy in which 5-10% nickel chrome powder was mixed, to coat the blade area.
  • Fig 6 illustrates suitable circuitry for use in the heating tool illustrated in Figs. 7 and 8 Mode of Operation in Fig. 6, 7 and 8
  • press switch (1) is closed, +4.8v or as appropriate is applied to the control electronics.
  • potential divider comprising resistor (2) and thermistor (4) on pin 5 of dual comparator (7)
  • the output on pin 7 will be non conducting, keeping the gate of the mosfet transistor at supply potential vis resistor (8) thereby turning mosfet transistor (3) on, and completing the circuit to the blade element (5).
  • Thermistor (4) responds to the rapidly increasing blade temperature, making pin 5 of comparator (7) progressively less positive until it is below the voltage at pin 6 which is derived from the set temperature control (6). At this point the output of the comparator (7) changes, removing the bias from transistor (3), turning it off. As the blade cools the potential on pin 5 of the comparator (7) increases due to the action of the thermistor (4). Comparator (7) again changes state, turning the blade element on so closely maintaining the preset temperature, the cycle being repeated on a supply and demand basis. The temperature of the blade is determined by the set temperature control (6) precise control being achieved by placing the thermistor close to the heating element. The spare comparator in (7) is used to indicate low battery level, temperature etc. as desired.
  • the heating means used for dental wax work illustrates the temperature - controlling circuitry detached from the heating means.
  • the blade and electronics may be in one piece.
  • the numbers represent parts described under Mode of Operation above.
  • a & D indicate blade element connections.
  • B & C indicate thermistor connections.
  • the heating means used for key-hole surgery work illustrates the temperature - controlling circuitry detached from the heating means.
  • the numbers represent parts described under Mode of Operation above.
  • Fig.9 illustrates a typical design of thermal scalpel which is suitable for cauterising, for use in dental, medical and veterinary fields.
  • the scalpel which is heated to a temperature such that haemostasis occurs on cutting, comprises a handle containing the means for controlling the functions on the blade, and power means; and a blade which is metallic, non-metallic preferably ceramic and may be wholly or partly coated with thermally conductive electrically insulating material, and carrying an electrically conducting heating path together with a temperature-change detecting means, ie. thermistor in the form of a chip or as an ink type material printed on the blade.
  • a temperature-change detecting means ie. thermistor in the form of a chip or as an ink type material printed on the blade.
  • the scalpel blade is suitable for sterilization and heats to the required controlled temperature at precisely the moment required by the surgeon, by touching or pressing a switch on the handle or blade to initiate the power derived from batteries in the handle or remotely sited, or from the mains.
  • Fig 9 (5) represents the heating element
  • (4) represents the thermistor
  • (9) represents the electronics.
  • Fig.10 illustrates a typical electrically operated heating tool in which there is a projecting heating means (1) having an electrically conducting heating path (2) associated with a temperature- change detecting device (3) means (4) for controlling the functions of the projecting heating means (1) and a power source in the form of batteries (5) or mains electricity (6).
  • the invention also includes a process for the manufacture of a heating tool for melting, cutting and cauterising, for use in dental, medical, veterinary and general commercial fields which comprises the use of a projecting heating means for melting, cutting and cauterising, carrying an electrically conducting heating path, associated with a temperature-change detecting means joined intimately or remotely to a means for controlling the functions of the projecting heating means, the tool being powered by electricity in the form of batteries or mains electricity.
  • the invention also covers the use of the electrically operated heating tool for wax melting/cutting, for cutting and cauterising, in association with surgery control equipment for key ⁇ hole surgery work in dentistry medicine and veterinary and hobbying, sail making, jewellery and electronic component manufacture.

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Otolaryngology (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

L'invention concerne entre autres un outil de chauffe électrique pour les travaux de fusion, de coupe et de cautérisation, pour les domaines dentaire, médical, vétérinaire et commercial en général. Le moyen de chauffe (1) qui est disposé en saillie et est réalisé en matière non métallique, par exemple en céramique, présente une piste de chauffe (2) électriquement conductrice associée à un dispositif (4) de détection (3) de changement de température pour réguler le fonctionnement du moyen de chauffe (1) en saillie, ainsi qu'une source d'énergie à piles (5) ou une alimentation par le réseau (6). L'invention concerne également une méthode de fabrication de l'outil de chauffe électrique et son utilisation dans les domaines dentaire, médical et vétérinaire, ainsi que dans d'autres domaines techniques.
PCT/GB1993/002253 1992-11-04 1993-11-02 Outil de chauffe electrique Ceased WO1994009714A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU53751/94A AU5375194A (en) 1992-11-04 1993-11-02 Electrically operated heating tool

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
GB929223073A GB9223073D0 (en) 1992-11-04 1992-11-04 Heated cutting tool
GB9223073.9 1992-11-04
GB9223052.3 1992-11-04
GB929223052A GB9223052D0 (en) 1992-11-04 1992-11-04 Cauterising tool
GB939305809A GB9305809D0 (en) 1993-03-20 1993-03-20 Heated wax cutter and cauteriser
GB9305809.7 1993-03-20
GB9317445.6 1993-08-20
GB939317445A GB9317445D0 (en) 1993-08-20 1993-08-20 Improved wax softener and cauteriser
GB939319335A GB9319335D0 (en) 1993-09-17 1993-09-17 Improved heated cutting means
GB9319335.7 1993-09-17

Publications (1)

Publication Number Publication Date
WO1994009714A1 true WO1994009714A1 (fr) 1994-05-11

Family

ID=27517153

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1993/002253 Ceased WO1994009714A1 (fr) 1992-11-04 1993-11-02 Outil de chauffe electrique

Country Status (2)

Country Link
AU (1) AU5375194A (fr)
WO (1) WO1994009714A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1208331A4 (fr) * 1999-07-20 2005-01-05 Mickey M Karram Dispositif d'eclairage chirurgical et son procede d'utilisation
WO2006000382A1 (fr) * 2004-06-23 2006-01-05 Aesculap Ag & Co. Kg Instrument chirurgical
EP1603471A4 (fr) * 2003-03-07 2008-03-19 Starion Instruments Corp Systeme de chauffage a resistance tubulaire presentant un noyau electro-isolant a haute conductivite thermique utilise dans un dispositif de soudure de tissu
WO2014003688A1 (fr) * 2012-06-26 2014-01-03 Nanyang Technological University Lame de coupe chirurgicale
CN104434297A (zh) * 2014-12-22 2015-03-25 东南大学 一种智能温控电热手术刀
EP3045133A1 (fr) * 2015-01-13 2016-07-20 Robert Bosch Gmbh Lame pour un instrument de decoupe, porte-scalpel pour une lame et procede de fabrication d'une lame
EP2521503A4 (fr) * 2010-01-05 2017-02-08 Curo Medical, Inc. Dispositif médical chauffant et méthode comportant un élément chauffant électrique autolimitant
KR101861557B1 (ko) 2017-02-03 2018-05-28 대구보건대학교산학협력단 치기공용 전열 조각장치

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3524045A (en) * 1969-02-07 1970-08-11 Louis Siegel Electrically heated tool with tip ejecting means
US4219025A (en) * 1978-11-16 1980-08-26 Corning Glass Works Electrically heated surgical cutting instrument
GB2060397A (en) * 1979-09-10 1981-05-07 Shaw R F Non-adherent surgical instrument and method
US4359052A (en) * 1976-01-26 1982-11-16 Concept Inc. Removable tip cautery
EP0219216A1 (fr) * 1985-09-04 1987-04-22 C.R. Bard, Inc. Cathéter à recanalisation thermique et procédé pour cet usage
WO1990004365A1 (fr) * 1988-10-28 1990-05-03 Lennox Charles D Catheters a ballon chauffe et similaires
US5006119A (en) * 1989-05-25 1991-04-09 Engineering & Research Associates, Inc. Hollow core coaxial catheter

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3524045A (en) * 1969-02-07 1970-08-11 Louis Siegel Electrically heated tool with tip ejecting means
US4359052A (en) * 1976-01-26 1982-11-16 Concept Inc. Removable tip cautery
US4219025A (en) * 1978-11-16 1980-08-26 Corning Glass Works Electrically heated surgical cutting instrument
GB2060397A (en) * 1979-09-10 1981-05-07 Shaw R F Non-adherent surgical instrument and method
EP0219216A1 (fr) * 1985-09-04 1987-04-22 C.R. Bard, Inc. Cathéter à recanalisation thermique et procédé pour cet usage
WO1990004365A1 (fr) * 1988-10-28 1990-05-03 Lennox Charles D Catheters a ballon chauffe et similaires
US5006119A (en) * 1989-05-25 1991-04-09 Engineering & Research Associates, Inc. Hollow core coaxial catheter

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1208331A4 (fr) * 1999-07-20 2005-01-05 Mickey M Karram Dispositif d'eclairage chirurgical et son procede d'utilisation
EP1603471A4 (fr) * 2003-03-07 2008-03-19 Starion Instruments Corp Systeme de chauffage a resistance tubulaire presentant un noyau electro-isolant a haute conductivite thermique utilise dans un dispositif de soudure de tissu
WO2006000382A1 (fr) * 2004-06-23 2006-01-05 Aesculap Ag & Co. Kg Instrument chirurgical
DE102004031927A1 (de) * 2004-06-23 2006-01-19 Aesculap Ag & Co. Kg Chirurgisches Instrument
EP2521503A4 (fr) * 2010-01-05 2017-02-08 Curo Medical, Inc. Dispositif médical chauffant et méthode comportant un élément chauffant électrique autolimitant
WO2014003688A1 (fr) * 2012-06-26 2014-01-03 Nanyang Technological University Lame de coupe chirurgicale
CN104434297A (zh) * 2014-12-22 2015-03-25 东南大学 一种智能温控电热手术刀
EP3045133A1 (fr) * 2015-01-13 2016-07-20 Robert Bosch Gmbh Lame pour un instrument de decoupe, porte-scalpel pour une lame et procede de fabrication d'une lame
US11278308B2 (en) 2015-01-13 2022-03-22 Robert Bosch Gmbh Blade for a cutting instrument, scalpel holder for a blade, and method for producing a blade
KR101861557B1 (ko) 2017-02-03 2018-05-28 대구보건대학교산학협력단 치기공용 전열 조각장치

Also Published As

Publication number Publication date
AU5375194A (en) 1994-05-24

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