WO2008114243A1 - Appareil médical et procédé destinés à l'administration de traitements thermiques particulièrement utiles dans les traitements radiculaires - Google Patents

Appareil médical et procédé destinés à l'administration de traitements thermiques particulièrement utiles dans les traitements radiculaires Download PDF

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Publication number
WO2008114243A1
WO2008114243A1 PCT/IL2008/000333 IL2008000333W WO2008114243A1 WO 2008114243 A1 WO2008114243 A1 WO 2008114243A1 IL 2008000333 W IL2008000333 W IL 2008000333W WO 2008114243 A1 WO2008114243 A1 WO 2008114243A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
pulse generator
heat treatment
body tissue
electrical
Prior art date
Application number
PCT/IL2008/000333
Other languages
English (en)
Inventor
Arik Becker
Original Assignee
Medicn.R.G. 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 Medicn.R.G. Ltd. filed Critical Medicn.R.G. Ltd.
Publication of WO2008114243A1 publication Critical patent/WO2008114243A1/fr

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
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00—Filling or capping teeth
    • A61C5/40—Implements for surgical treatment of the roots or nerves of the teeth; Nerve needles; Methods or instruments for medication of the roots
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • 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
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/0046—Surgical instruments, devices or methods, e.g. tourniquets with a releasable handle; with handle and operating part separable
    • 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
    • A61B2018/00696—Controlled or regulated parameters
    • A61B2018/00702—Power or energy
    • 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
    • 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
    • A61B90/08—Accessories or related features not otherwise provided for
    • A61B2090/0813—Accessories designed for easy sterilising, i.e. re-usable

Definitions

  • the present invention relates to medical apparatus and methods for administering heat treatments to a preselected body tissue.
  • the invention is particularly useful in administering a dental root canal treatment, and is therefore described below with respect to such application, but it will be appreciated that the invention could also be advantageously used in many other applications.
  • a broad object of the present invention is to provide medical apparatus and methods for administering a predetermined heat treatment to a selected body tissue in a manner which protects the body tissue from excessive heating.
  • a more particular object of the present invention is to provide a dental apparatus and method particularly useful for the heat treatment of teeth root canals.
  • medical apparatus for administering a predetermined heat treatment to a preselected body tissue, comprising: an electrode for contacting the body tissue to receive the heat treatment; and a pulse generator electrically connected to the electrode for applying thereto an electrical pulse of sufficient energy for administering the heat treatment when the electrode is in contact with the body tissue; characterized in that the apparatus further comprises a heat— sensitive device which automatically interrupts the electrical connection upon the application to the electrode of sufficient energy by the pulse generator to administer the predetermined heat treatment, and to thereby protect the body tissue from excessive heating.
  • the heat- sensitive device is an electrical fuse constructed integrally with the electrode.
  • the electrode is in the form of an electrode unit including an exposed electrically-conductive section at one end for contacting the body tissue, an electrical connector plug at the opposite end for insertion into a socket in the pulse generator, and the electrical fuse between the electrically— conductive section and the connector plug.
  • the electrical fuse, and its electrical connections to the electrically-conductive section and connector plug, are covered by an insulating jacket to permit manually handling the electrode unit.
  • the apparatus includes a plurality of such electrode units having fuses of different values selectively insertable into the socket of the pulse generator according to the respective heat treatment to be administered.
  • a handpiece connectable to a pulse generator for administering a predetermined medical heat treatment to a preselected body tissue
  • the handpiece comprising: an electrode electrically connectable to the pulse generator and having a section constructed for engaging the body tissue to which the heat treatment is to be administered; and a heat-sensitive device which automatically interrupts the electrical connection of the electrode to the pulse generator upon the application to the electrode of sufficient energy by the pulse generator to administer the predetermined heat treatment, and to thereby protect the body tissue from excessive heating.
  • a method of administering a predetermined heat treatment to a preselected body tissue comprising: contacting the body tissue with an electrode connected to a pulse generator; while the electrode is in contact with the body tissue, activating the pulse generator to apply to the electrode an electrical pulse of sufficient energy to administer the predetermined heat treatment; and automatically interrupting, by a heat-sensitive fuse in the electrical connection from the pulse generator to the electrode, the electrical connection to the electrode upon the application thereto of sufficient electrical energy from the pulse generator to administer the predetermined heat treatment, to thereby protect the body tissue from excessive heating.
  • the invention provides a number of advantages when used for administering predetermined heat treatments to preselected body tissues, such as the dental root canal treatment briefly described above.
  • the invention better assures that sufficient energy will be applied to the electrode to administer the predetermined heat treatment in a manner which protects the body tissue from excessive heating.
  • each electrode unit used in the heat treatment would be sterilized and precisely formed for the respective root canal, it precludes the possibility of reusing an electrode unit which may have become infected or deformed from a prior use.
  • Fig. 1 illustrates one form of medical apparatus constructed in accordance with the present invention for administering a predetermined heat treatment to a preselected body tissue, in this case a root canal treatment as described in the above- cited US Patent 6,482,008;
  • Fig. 2 is a sectional view of the dental handpiece in the apparatus of Fig. 1;
  • Fig. 3 is an enlarged sectional view of the socket end of the dental handpiece of Fig. 2, particularly illustrating the electrode unit receivable within the handpiece for insertion into the tooth root canal;
  • Fig. 4 is a view corresponding to that of Fig. 3, but more particularly illustrating the construction of the electrode unit;
  • Fig. 5 illustrates a plurality of electrode units having fuses of different values which may be included in a kit and which are selectively insertable into the socket of the handpiece according to respective heat treatment to be administered.
  • the present invention relates to apparatus and methods for administering predetermined heat treatments to a preselected body tissue in a manner to protect the body tissue from excessive heating.
  • the invention is described below with respect to the dental apparatus and method for administering heat treatments to root canals in teeth, as described in the above-cited US Patent 6,482,008, the contents of which are expressly incorporated herein by reference.
  • the apparatus illustrated in Fig. 1 includes a pulse generated, generally designated 10, constituted of a housing 20 which includes the electrical power supply and electronic circuitry for generating high frequency electrical pulses, and a handpiece 30 carrying an electrode unit 40 for applying the high frequency electrical pulses to the interior of the tooth root canal being treated.
  • housing 20 includes an electrical output line 21 connected to handpiece 30 for applying the high frequency electrical pulses to the electrode unit 40.
  • housing unit 20 includes another line 22 connected to a lip clip 23 to be clipped to the lip of the subject receiving the treatment, and a further line 24 connected to a bare handlebar 25 to be gripped by the person receiving the treatment, all as described more particularly in the above-cited US Patent 6,482,008.
  • electrode unit 40 is inserted into the root canal of a tooth being treated for contacting body tissue within the root canal to receive the high frequency electrical pulse from the pulse generator.
  • the present invention relates particularly to the dental handpiece 30, and more particularly to the construction of the electrode unit 40.
  • electrode unit 40 and the respective part of handpiece 30 for receiving it is more particularly illustrated in Figs. 2-4.
  • handpiece 30 is made of insulating material and of a configuration for convenient grasping by the dentist. It includes a push-button 31 depressible by the dentist when the high frequency pulse is to be applied to the patient after the electrode unit 40 has been inserted into the root canal of the tooth being treated. Push-button 31 is connected by electrical conductor 32 to the output line 21 of pulse generator unit 20, and by electrical conductor 33 to an electrical contact 34 (Figs. 3 and 4) within socket 35 to receive the electrode unit 40.
  • electrode unit 40 includes an electrical connector plug 41 at one end for insertion into socket 35 of handpiece 30 to make electrical contact with contact 34 of the handpiece, and an exposed electrically- conductive electrode 42 at the opposite end for insertion into the tooth root canal. Electrode unit 40 further includes an electrical fuse 43 connecting electrode 42 to connector plug 41. It further includes an insulating jacket 44 covering fuse 43, together with electrical connections to electrode 42 and connector plug 41, to facilitate manual handling of the electrode unit.
  • the angle between electrode 42 and connector plug 41 is an obtuse angle, preferably about 110°, to facilitate manipulation of electrode 42 by the dentist.
  • Fuse 43 is designed to have a value to automatically interrupt the electrical connection from connector plug 41 to the electrode 42 when sufficient energy has been supplied by the pulse generator to the electrode to produce the desired heat treatment, and thereby to protect the body tissue from excessive heating.
  • housing unit 20 of the pulse generator 10 includes manually-selectable controls which enable the operator to select different values of electrical energy to be supplied to the electrode, according to the nature of the heat treatment to be applied, and particularly according to the type of tooth to be treated.
  • the dentist would therefore be supplied with a plurality of electrode units 40, e.g., in a kit form as shown in Fig. 5, each having fuses of different values and selectively insertable into the socket 35 of handpiece 30, according to the respective heat treatment to be administered, thereby not only better protecting the patient from excessive heating, but also better assuring that a previously— used electrode unit, which may have become infected or deformed in one use, will not be re-used.
  • the dentist would first determine the heat treatment to be applied, and would then select the appropriate electrode unit 40 and insert it into socket 35 of the handpiece 30, according to the selected heat treatment. Since the value of the fuse 43 in the selected electrode unit would correspond to the heat treatment to be applied, the fuse would automatically interrupt the application of electrical energy to electrode 42 as soon as the predetermined amount of electrical energy has been supplied to the electrode, thereby protecting the patient from excessive heating, as well as from a re— use of an electrode unit which may have become infected or deformed by a prior use.
  • each electrode unit 40 would be marked according to the value of its respective fuse 43 appropriate for the respective heat treatment to be applied.

Abstract

La présente invention concerne un appareil médical destiné à administrer un traitement thermique prédéterminé à un tissu corporel présélectionné, comprenant une unité d'électrode établissant le contact avec le tissu corporel destiné à recevoir le traitement, un générateur d'impulsions destiné à appliquer une impulsion électrique d'une énergie suffisante pour administrer le traitement thermique et un dispositif thermosensible qui interrompt automatiquement la connexion électrique lors de l'application d'une énergie suffisante pour administrer le traitement thermique prédéterminé, permettant ainsi de protéger le tissu corporel de tout chauffage excessif et évitant la réutilisation d'une unité d'électrode infectée ou déformée.
PCT/IL2008/000333 2007-03-19 2008-03-11 Appareil médical et procédé destinés à l'administration de traitements thermiques particulièrement utiles dans les traitements radiculaires WO2008114243A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US90705707P 2007-03-19 2007-03-19
US60/907,057 2007-03-19

Publications (1)

Publication Number Publication Date
WO2008114243A1 true WO2008114243A1 (fr) 2008-09-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2008/000333 WO2008114243A1 (fr) 2007-03-19 2008-03-11 Appareil médical et procédé destinés à l'administration de traitements thermiques particulièrement utiles dans les traitements radiculaires

Country Status (1)

Country Link
WO (1) WO2008114243A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010052717A1 (fr) * 2008-11-05 2010-05-14 Medicn.R.G. Ltd. Dispositif et procédé de traitement d'une cavité dentaire
ITMI20091429A1 (it) * 2009-08-06 2011-02-07 Enos Gmbh Sonda per endodonzia idonea all'impiego di elettrodi aghiformi monouso

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6179824B1 (en) * 1993-05-10 2001-01-30 Arthrocare Corporation System and methods for electrosurgical restenosis of body lumens
EP1174093A1 (fr) * 1993-05-10 2002-01-23 Arthrocare Corporation Appareil et méthode pour la coupe électrochirurgicále
US20020058232A1 (en) * 2000-09-22 2002-05-16 Weiss Ervin I. Method for root canal treatment: technique, tools and materials for mobilizing medicaments and cements into dentinal tubules
WO2003005898A1 (fr) * 2001-07-11 2003-01-23 Aaken Labs Electrode medicale conçue pour empecher le passage de courant nocif a travers le corps d'un patient
WO2006059067A1 (fr) * 2004-12-03 2006-06-08 Gyrus Medical Limited Generateur electrochirurgical

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6179824B1 (en) * 1993-05-10 2001-01-30 Arthrocare Corporation System and methods for electrosurgical restenosis of body lumens
EP1174093A1 (fr) * 1993-05-10 2002-01-23 Arthrocare Corporation Appareil et méthode pour la coupe électrochirurgicále
US20020058232A1 (en) * 2000-09-22 2002-05-16 Weiss Ervin I. Method for root canal treatment: technique, tools and materials for mobilizing medicaments and cements into dentinal tubules
WO2003005898A1 (fr) * 2001-07-11 2003-01-23 Aaken Labs Electrode medicale conçue pour empecher le passage de courant nocif a travers le corps d'un patient
WO2006059067A1 (fr) * 2004-12-03 2006-06-08 Gyrus Medical Limited Generateur electrochirurgical

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010052717A1 (fr) * 2008-11-05 2010-05-14 Medicn.R.G. Ltd. Dispositif et procédé de traitement d'une cavité dentaire
US9629691B2 (en) 2008-11-05 2017-04-25 Medic N.R.G. Ltd. Root canal treatment
US11090486B2 (en) 2008-11-05 2021-08-17 Mdt Micro Diamond Technologies Ltd Root canal treatment
ITMI20091429A1 (it) * 2009-08-06 2011-02-07 Enos Gmbh Sonda per endodonzia idonea all'impiego di elettrodi aghiformi monouso

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