WO1989000400A1 - Dispositif pour analyse electrochimique ''in vivo'' d'implants metalliques - Google Patents

Dispositif pour analyse electrochimique ''in vivo'' d'implants metalliques Download PDF

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Publication number
WO1989000400A1
WO1989000400A1 PCT/HU1988/000051 HU8800051W WO8900400A1 WO 1989000400 A1 WO1989000400 A1 WO 1989000400A1 HU 8800051 W HU8800051 W HU 8800051W WO 8900400 A1 WO8900400 A1 WO 8900400A1
Authority
WO
WIPO (PCT)
Prior art keywords
electronic unit
digital
reference electrode
electrode
tip part
Prior art date
Application number
PCT/HU1988/000051
Other languages
German (de)
English (en)
Inventor
Zoltán BAY
László KISS
Varsányi Magda LAKATOSNÉ
Zoltán VASS
György VUKÁN
Laura SZIRÁKI
Original Assignee
Bay Zoltan
Kiss Laszlo
Lakatosne Varsanyi Magda
Vass Zoltan
Gyoergy Vukan
Sziraki Laura
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 Bay Zoltan, Kiss Laszlo, Lakatosne Varsanyi Magda, Vass Zoltan, Gyoergy Vukan, Sziraki Laura filed Critical Bay Zoltan
Priority to JP88506248A priority Critical patent/JPH02500652A/ja
Publication of WO1989000400A1 publication Critical patent/WO1989000400A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/41—Detecting, measuring or recording for evaluating the immune or lymphatic systems
    • A61B5/411—Detecting or monitoring allergy or intolerance reactions to an allergenic agent or substance
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/45—For evaluating or diagnosing the musculoskeletal system or teeth
    • A61B5/4538—Evaluating a particular part of the muscoloskeletal system or a particular medical condition
    • A61B5/4542—Evaluating the mouth, e.g. the jaw
    • A61B5/4547—Evaluating teeth
    • 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
    • A61F2240/00—Manufacturing or designing of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2240/001—Designing or manufacturing processes
    • A61F2240/008—Means for testing implantable prostheses

Definitions

  • the invention relates to a device for "in vivo" electrochemical testing of metal implantations with a reference electrode and a sensing electrode and with an electronic unit connected to both electrodes.
  • HU-PS No. 1677/85 describes a method and an instrument for the investigation and elucidation of such effects.
  • the essence of the device here is that there is also a specially designed combined probe for measuring the voltage and the current, which is connected to the electronic unit by means of a rental.
  • the electronic unit there is a current / voltage converter for sensing the current to be measured, the one to be measured Voltage sensing instrumentation amplifier and a precision rectifier are used.
  • a logarithmic amplifier is connected to an output of the precision rectifier and a DEPREZ instrument as an analog indicator and a voltage / current converter feeding this are connected to its output.
  • the electronic unit is built into a separate instrument housing, to which the specially designed combined probe is connected. The two parts of the combined probe are connected by means of dowel bolts and connected to the electronic unit by a four-wire line.
  • the invention has for its object to provide a device for "in vivo" electrochemical testing of metal implants, which besides eliminating the shortcomings of the known solutions enables a more accurate, more reliable measurement, their handling and operation is much easier for the doctor even without auxiliary personnel than before, and which, in the first place, also meets the newer hygienic regulations.
  • the reference electrode is provided with a handle part and a tip part, an electrolyte and an attached sensor contact of the reference electrode impregnated with the electrolyte being arranged in the tip part, and the handle part and the tip part with a detachable connection are connected to each other.
  • the tip part is designed for single use, with this at one end facing the handle part with a membrane which can be pierced before use and at the other end de is completed with a capsule that also contains the sensor contact.
  • the handle part is provided with a needle-like secondary electrode which projects in the direction of the tip part.
  • the embodiment according to the invention is also advantageous, in which the electrolyte in the tip part and the capsule is in the colloidal gel state.
  • the electronic unit is formed separately from the electrodes.
  • the electronic unit can be arranged on a dental column or can be installed therein.
  • the electronic unit is arranged in the handle part of the reference electrode.
  • the handle part is provided with a head in which a display unit of the electronic unit is arranged.
  • the probe electrode can be connected to the head by a line.
  • the electronic unit is constructed with digital technology, the reference electrode and the probe electrode being connected to an amplifier and this being connected to an input of a digital comparator by an analog / digital converter, and a digital multiplexer and to another input of the digital comparator an LED indicating the danger level is connected to an output of the digital comparator, a digital memory is present at an input of the multiplexer, and a selection and control circuit which can be actuated with a step button is connected to the digital multiplexer and to an alphanumeric memory of the alphanumeric display unit.
  • the elec tronic unit is built with analog technology
  • the reference electrode and the probe electrode are connected to an amplifier and this to an input of a comparator, and to another input of the comparator an analog multiplexer and to its output an LED indicating the danger level is connected to one input of the analog multiplexer, an analog memory is present, and a selection and control circuit that can be actuated with a step button is in control connection with the analog multiplexer and with an alphanumeric memory of the alphanumeric display unit.
  • FIG. 1 shows a sketchy side view of an advantageous embodiment of the device according to the invention
  • FIG. 2 shows a block diagram of the electronic circuit in an embodiment according to the invention
  • FIG. 3 shows a block diagram of the electronic circuit in another embodiment according to the invention.
  • the reference electrode 1 shows a reference electrode 1 and a probe electrode 2 in an advantageous embodiment of the device according to the invention.
  • the reference electrode 1 has two main parts, namely a handle part 3 and a tip part 4. Between the handle part 3 and the tip part 4 there is a detachable connection, here a threaded connection. In another embodiment, only one can be between the handle part 3 and the tip part 4 such connection should be sufficient, whereby the two parts are attached to each other, for. B. can be pushed together by a bottleneck.
  • the releasable connection between the handle part 3 and the tip part 4 enables the tip part 4 to be designed for only one use, that is to say the tip part 4 can be thrown away after the single use.
  • This tip part 4 is namely the only part of the device that with the body to be tested, in the case of z. B. dental examinations contacted with the oral cavity.
  • an electrolyte is required in the reference electrode 1, which is present in the embodiment shown in the form of an electrolyte 5 in the colloidal gel state.
  • This electrolyte 5 is arranged in a container 6, which is actually connected to the handle part 3.
  • the above-mentioned releasable connection is thus formed in this embodiment between the container 6 and the handle part 3.
  • the invention enables the tip part 4 to be designed as a disposable part. Interchangeable tip parts 4 can be provided for this purpose, in which the electrolyte 5 in the colloidal gel state is sealed off at the end facing the handle part 3 with a membrane 7 before use.
  • the container 6 of the tip part 4 ends on the other side in a contact 8 made of felt or fibrous material.
  • the sensor contact 8 is saturated with the electrolyte 5 and must not dry out. Therefore, the container 6 is closed at this end with a capsule 9 which is pulled on the tip part 4.
  • This capsule 9 also contains electrolyte 5 in the colloidal gel state in order to avoid the leakage or leakage of the electrolyte.
  • the disposable part is thus composed of the container 6 of the tip part 4, the capsule 9 and the electrolyte 5 therein.
  • the grip part 3 of the reference electrode 1 is provided with a secondary electrode 10, which is needle-like and is suitable for piercing the membrane 7 during the connection of the container 6 of the tip part 4 and penetrating into the electrolyte 5.
  • FIG. 1 of the drawings shows an embodiment of the device according to the invention, which is suitable for dental, oral surgery, stomatological applications.
  • the electronic unit carrying out the evaluation of the measurements is installed in the handle part 3 of the reference electrode 1.
  • the electronic unit is provided as a display with an LED 11 indicating the danger level and an alphanumeric display unit 12, as an operating element with a step button 13. All these parts are arranged in a head 14 of the handle part 3.
  • the probe electrode 2 is also connected to this by a line 15.
  • the probe electrode 2 is provided with a handle 16 made of insulating material which is well adapted to the hand and ends in a metal tip 17.
  • the metal tip 17 is connected within the handle 16 of the probe electrode 2 by a line 18 to the line 15.
  • the touch electrode 2 can have the shape of the hand instruments which are generally used in dental technology.
  • any shape can be justified, which is common in dentistry.
  • the probe electrode can have 2 different shapes. With regard to the ease of use and the series measurements, in the dental example this can be designed as one piece with the drying gun of the dental chair. This is also useful because - as will be described in more detail later - the metal tip 17 must be connected to a previously dried surface.
  • FIG. 2 schematically illustrates the circuitry implementation of the electronic unit with digital technology.
  • the reference electrode 1 and the probe electrode 2 are connected to an amplifier 20, which is connected by an analog / digital converter 21 to an input of a digital comparator 22.
  • the LED 11 indicating the danger level is connected to an output of the digital comparator 22 and a digital multiplexer 23 is connected to another input.
  • a memory 24 is located on the input side of the digital multiplexer 23, and the digital multiplexer 23 is also in operative connection with a selection and control circuit 25.
  • the step button 13 is connected as an operating element to an input of the circuit 25, and the circuit 25 is also connected to an alphanumeric memory 26 of the alphanumeric display unit 12.
  • Fig. 3 shows an implementation of the electronic unit of this invention with analog technology.
  • the reference electrode 1 and the probe electrode 2 are also connected to an amplifier 27 which is connected to an input of an analog comparator 28.
  • An analog multiplexer 29 is connected to another input and the LED 11 is connected to an output of the analog comparator 28.
  • the electronic unit is to be provided with a conventional power supply unit, not shown in the figures. Simplicity, small and light dimensions and portability are made possible if any batteries are used as the voltage source.
  • anodic polarization curve can be determined for all metals and alloys.
  • This anodic polarization curve can provide information about the metals or metal alloys used for metal implantations, in which case an undesirable effect due to the use of the implant can be expected.
  • a potential value can be given, above which the area of the so-called transpassive solution begins and the solution of the metal can already be expected.
  • This so-called threshold potential is stored in the memory 24 or 30 of the electronic unit of the device according to the invention, and it is compared with the currently measured potential value. The course of the measurement is further illustrated using the example of the metal implant used in the human mouth.
  • the probe electrode 2 is on the dried surface che of the implant to be measured, e.g. B. the seal or bridge with the help of the metal tip 17 connected.
  • the type of metal alloy which is installed in the patient's mouth is selected using the step button 13 before the start of the measurement.
  • the threshold potential associated with the type of alloy is called up from the memory 24, or 30, on the other hand, with the aid of the aplhanumeric memory 26, or 32 on the alphanumeric display unit 12
  • Name of the alloy used, e.g. B. Viron 77 illustrates.
  • the reference electrode 1 is brought into readiness for measurement, for which purpose the tip part 4 previously held under sterile circumstances is connected to the handle part 3.
  • the secondary electrode 10 breaks through the membrane 7 and penetrates into the electrolyte 5 contained in the container 6 in the colloidal gel state. After the corresponding connection has been made, the capsule 9 is pulled off, and the sensor contact 8 is ready for measurement and still in a completely sterile state.
  • the sensor contact 8 was kept constantly wet, so that it was directly connected to the muscle tissue, e.g. B. can be contacted with the gums near the implant to be measured.
  • the signals arriving from the reference electrode 1 or the probe electrode 2 are passed into the amplifier 20 or 27, from which they come into the comparator 22 or 28 in the case of the digital version by the analog / digital converter 21 .
  • the threshold potential corresponding to the metal alloy used is available, so that these signals can be compared in the comparator 22 or 28. If a value exceeding the threshold potential is perceived in the process, a signal is sent to the LED 11 indicating the danger level, otherwise it speaks LED 11 does not come on.
  • the container 6 of the tip part 4 of the reference electrode 1 is immediately pulled down from the handle part 3 and immediately discarded.
  • a new tip part 4 is taken out, which can be stored under sterile conditions in the manner shown.
  • the device according to the invention Due to the design of the device according to the invention, an instrument with extremely small dimensions, but with easy handling, can be produced.
  • the dimensions of the probe electrode 2 do not exceed the dimensions of the conventional hand instruments of the dentists, the dimensions of the reference electrode 1 being of the order of magnitude of those of a pencil.
  • the handle part 3 of the reference electrode 1 of the embodiment shown in FIG. 1 can be encapsulated in a suitable manner, as a result of which the device according to the invention can withstand all sterilization and disinfection processes and thus meets the strictest requirements in this regard.
  • the tip part 4 which is difficult for sterilization alone, is used only once and then discarded.

Landscapes

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

Abstract

Le dispositif décrit comporte une électrode de référence et une électrode à palpeur reliées à une unité électronique. Le perfectionnement selon l'invention consiste en ce que l'électrode de référence (1) comporte une partie de préhension (3) et une partie pointue (4), dans laquelle sont disposés un électrolyte (5) et un contact à palpeur (8) relié à ladite partie (4) et imprégné de l'électrolyte (5). La partie de préhension (3) et la partie pointue (4) sont reliées l'une à l'autre par une fixation démontable.
PCT/HU1988/000051 1987-07-21 1988-07-20 Dispositif pour analyse electrochimique ''in vivo'' d'implants metalliques WO1989000400A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP88506248A JPH02500652A (ja) 1987-07-21 1988-07-20 金属性移植物の生体内電気化学的試験のための装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU873356A HUT48373A (en) 1987-07-21 1987-07-21 Device for electrochemical testing metal implants in vivo
HU3356/87 1987-07-21

Publications (1)

Publication Number Publication Date
WO1989000400A1 true WO1989000400A1 (fr) 1989-01-26

Family

ID=10963711

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/HU1988/000051 WO1989000400A1 (fr) 1987-07-21 1988-07-20 Dispositif pour analyse electrochimique ''in vivo'' d'implants metalliques

Country Status (5)

Country Link
EP (1) EP0333780A1 (fr)
JP (1) JPH02500652A (fr)
AU (1) AU2120488A (fr)
HU (1) HUT48373A (fr)
WO (1) WO1989000400A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996035373A1 (fr) * 1995-05-09 1996-11-14 Dentimpex Kft. Procede et appareil, et electrode de reference de palpation des tissus servant a examiner les effets electrochimiques des protheses metalliques implantees (in vivo) occasionnant des reactions allergiques et/ou inflammatoires dans l'organisme
DE102016214928A1 (de) 2016-08-11 2018-02-15 Max Josef Probst Verfahren und Vorrichtung zur Ermittlung eines elektrischen Spannungswertes aus einem Spannungsverlauf

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1466862A1 (de) * 1965-09-30 1969-07-03 Le O Zd Geraet zum Auffinden von Punkten zur Akupunktur auf der Haut von Menschen und Tieren
DE2448459A1 (de) * 1973-10-16 1975-04-24 Willi Moeller Elektroden-messkette
DE2434269A1 (de) * 1974-07-17 1976-02-05 Elliott Angelika Vorrichtung zur durchfuehrung von messungen am lebenden menschlichen oder tierischen koerper
US3943919A (en) * 1972-03-13 1976-03-16 Siemens Aktiengesellschaft Electrical tooth pulp tester having tiltable head
DE2731989A1 (de) * 1977-07-15 1979-01-18 Heinrich Dr Ing Peesel Messgeraet zur messung von potentialen im munde eines patienten
EP0094367A2 (fr) * 1982-05-07 1983-11-16 Pierre Niessen Procédé et appareil pour déterminer l'état d'une zone de la surface de la peau
US4485823A (en) * 1980-12-27 1984-12-04 Sankin Industry Co., Ltd. Apparatus for diagnosing environmental tissue of tooth
US4618929A (en) * 1983-05-04 1986-10-21 Akron City Hospital Portable circuit and method for performing a time study and analysis of bodily ionic characteristics
WO1986006265A1 (fr) * 1985-05-02 1986-11-06 Bay Zoltan Procede et equipement d'examen des effets electro-chimiques de protheses metalliques (implants) dans des organismes vivants
DE3639263A1 (de) * 1985-11-16 1987-06-25 Yakichi Higo Vorrichtung zur ueberpruefung der funktionsfaehigkeit von in lebende koerper eingesetzte endoprothesen

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1466862A1 (de) * 1965-09-30 1969-07-03 Le O Zd Geraet zum Auffinden von Punkten zur Akupunktur auf der Haut von Menschen und Tieren
US3943919A (en) * 1972-03-13 1976-03-16 Siemens Aktiengesellschaft Electrical tooth pulp tester having tiltable head
DE2448459A1 (de) * 1973-10-16 1975-04-24 Willi Moeller Elektroden-messkette
DE2434269A1 (de) * 1974-07-17 1976-02-05 Elliott Angelika Vorrichtung zur durchfuehrung von messungen am lebenden menschlichen oder tierischen koerper
DE2731989A1 (de) * 1977-07-15 1979-01-18 Heinrich Dr Ing Peesel Messgeraet zur messung von potentialen im munde eines patienten
US4485823A (en) * 1980-12-27 1984-12-04 Sankin Industry Co., Ltd. Apparatus for diagnosing environmental tissue of tooth
EP0094367A2 (fr) * 1982-05-07 1983-11-16 Pierre Niessen Procédé et appareil pour déterminer l'état d'une zone de la surface de la peau
US4618929A (en) * 1983-05-04 1986-10-21 Akron City Hospital Portable circuit and method for performing a time study and analysis of bodily ionic characteristics
WO1986006265A1 (fr) * 1985-05-02 1986-11-06 Bay Zoltan Procede et equipement d'examen des effets electro-chimiques de protheses metalliques (implants) dans des organismes vivants
DE3639263A1 (de) * 1985-11-16 1987-06-25 Yakichi Higo Vorrichtung zur ueberpruefung der funktionsfaehigkeit von in lebende koerper eingesetzte endoprothesen

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996035373A1 (fr) * 1995-05-09 1996-11-14 Dentimpex Kft. Procede et appareil, et electrode de reference de palpation des tissus servant a examiner les effets electrochimiques des protheses metalliques implantees (in vivo) occasionnant des reactions allergiques et/ou inflammatoires dans l'organisme
GB2314510A (en) * 1995-05-09 1998-01-07 Dentimpex Kft Method and apparatus as well as reference electrode for tissue palpation for examining the electrochemical effects of the implanted metal substitutions
GB2314510B (en) * 1995-05-09 1999-06-16 Dentimpex Kft Apparatus for examining the electrochemical effects of implanted metal substitutions
US5978692A (en) * 1995-05-09 1999-11-02 Dentimpex Kft. Apparatus for examining electrochemical effects of in vivo metal implants causing allergic symptoms and/or inflammation in a living organism
AT407825B (de) * 1995-05-09 2001-06-25 Dentimpex Kft Vorrichtung zum messen von potentialunterschieden zwischen metallischen implantatmaterial und körpergewebe
DE19681382C2 (de) * 1995-05-09 2003-10-02 Dentimpex Kft Vorrichtung zum Messen von durch Metallimplantate verursachten Potentialunterschieden
DE102016214928A1 (de) 2016-08-11 2018-02-15 Max Josef Probst Verfahren und Vorrichtung zur Ermittlung eines elektrischen Spannungswertes aus einem Spannungsverlauf

Also Published As

Publication number Publication date
JPH02500652A (ja) 1990-03-08
EP0333780A1 (fr) 1989-09-27
AU2120488A (en) 1989-02-13
HUT48373A (en) 1989-05-29

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