WO2014139486A1 - Dispositif de régulation empêchant les chocs électriques dans les dispositifs utilisant l'électrothérapie en vue d'un traitement et procédé de prévention contre les chocs électriques - Google Patents

Dispositif de régulation empêchant les chocs électriques dans les dispositifs utilisant l'électrothérapie en vue d'un traitement et procédé de prévention contre les chocs électriques Download PDF

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Publication number
WO2014139486A1
WO2014139486A1 PCT/CZ2014/000025 CZ2014000025W WO2014139486A1 WO 2014139486 A1 WO2014139486 A1 WO 2014139486A1 CZ 2014000025 W CZ2014000025 W CZ 2014000025W WO 2014139486 A1 WO2014139486 A1 WO 2014139486A1
Authority
WO
WIPO (PCT)
Prior art keywords
output current
regulation
electrotherapy
treg
treatment
Prior art date
Application number
PCT/CZ2014/000025
Other languages
English (en)
Other versions
WO2014139486A4 (fr
Inventor
Jiri KARES
Original Assignee
Kares Jiri
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 Kares Jiri filed Critical Kares Jiri
Priority to DE112014001207.6T priority Critical patent/DE112014001207T5/de
Priority to GB1517424.6A priority patent/GB2530421A/en
Priority to SK50059-2015A priority patent/SK288395B6/sk
Publication of WO2014139486A1 publication Critical patent/WO2014139486A1/fr
Publication of WO2014139486A4 publication Critical patent/WO2014139486A4/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/02—Details
    • A61N1/08—Arrangements or circuits for monitoring, protecting, controlling or indicating
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/18—Applying electric currents by contact electrodes
    • A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/36014—External stimulators, e.g. with patch electrodes
    • A61N1/3603—Control systems

Definitions

  • the invention relates to the field of health care, particularly to medical devices using electrotherapy as a physical medicine treatment method.
  • Electrotherapy is a medical procedure used to treat a variety of diseases and health problems.
  • the treatment employing the beneficial effects of electric energy uses direct or pulsating current.
  • the devices are powered by batteries or from the power mains.
  • the devices provide a high degree of safety in terms of their interaction with the power mains.
  • the patient In the treatment procedure, the patient is connected to the circuit, in which some type of electrotherapy takes place.
  • the current intensity and the length of procedures are individual.
  • the polarity of current is switched over and the procedure is repeated with the reversed polarity.
  • Procedures are ended by switching the device from the operating mode to the stand-by mode and subsequent disconnection of the patient from the circuit, to which he was connected.
  • the purpose of the invention was to develop a regulation device for devices that use electrotherapy as a physical method of treatment so, that they would not cause electric shock to patients in case of accidental interruption of procedure.
  • Electrotherapy uses direct current or pulsating current.
  • This invention aims to ensure the patient does not suffer electric shock during the procedure in the event of accidental interruption of the procedure, such as taking out the hands from the water with electrodes when the device is in operation mode.
  • the subject of the invention is a new design of the regulation device to prevent electric shock in devices using electrotherapy as physical method of treatment.
  • the cause of given positive function of the device that it does not cause electric shock, is its ability to adapt, as an electric power source, to change of load impedance of the patient's body exactly when the patient removes the hands from the water with electrodes.
  • the power source is a regulable source of direct current.
  • the key factor is the relationship between the regulator and the regulated system - the loading impedance of the patient's body enjoying the treatment therapy.
  • the parameters of the regulator which need to be adjusted in order to regulate the regulated system with zero or negligible regulation deviation, are the following: speed, reaction, response time, and inertia
  • the load impedance of the patient's body, enjoying the treatment therapy as the regulated system has the following characteristics:
  • the amount of the ohmic resistance varies in the range of about ⁇ 5%, i.e., relatively little and slowly
  • the regulator of output current with the delay Treg consists of an output current stabilizer with a delay element, an amplifier of regulation deviation, a starting circuit, a circuit of gradual regulation of output current, and a switch of stand-by and operation modes of the device.
  • the regulator solves as follows:
  • the value of the output voltage is about 10V.
  • the load - the patient's body is exposed to the current of about 2 mA, and the device switches to operation mode automatically.
  • the voltage in the circuit further decreases to approximately 3V, and the current starts to rise slowly until it reaches the preset amplitude value.
  • the current increase time is about 0 to 60 sec, depending on the pre-set amplitude value of current, i.e., shorter time for lower value and longer time for higher value.
  • the medical procedure itself starts. After completing the procedure, the patient is disconnected from the circuit and the device automatically switches to standby mode. When the patient suddenly interrupts the procedure, i.e., unexpectedly pulls his hands from the water while the device is on, there will be a rapid rise in the current up to its nominal value, while regulator will respond to the rapid change by withholding its current value with the delay Treg. During this time, the device manages to switch to standby mode. Standby mode is identical to the state of the device after switching on. The device is ready to start further medical procedures.
  • the regulator by its function completely eliminates electrical shock at the beginning and end of the procedure under meeting the following conditions between the delay Treg of the output current from the regulator block (4), the time Tvyp for quick switching of the device from operation mode to stand-by mode, and the time Trim of gradual regulation of the amplitude of the output current:
  • This feature allows the patient to discontinue the procedure therapy at any time and resume it again without having to switch the device from operation mode to stand-by mode and vice versa.
  • Figure 1 contains the block diagram of the medical device in which occurrence of electric shock is prevented during the procedure using electrotherapy.
  • Figure 2 shows the block diagram of the regulator of output current with the delay.
  • Figure 3 shows the electrical diagram of the regulator of output current with the delay.
  • the regulation device for preventing electric shock in devices utilizing electrotherapy for treatment consists of stabilizer 7 of output current with a delay element, of amplifier 8 of regulation deviation, of starting circuit 5, of circuit 6 of gradual regulation of output current, and of switch 9 of operation and stand-by modes of the device.
  • Stabilizer 7 of output current with a delay element allows to set a certain value of output current and to maintain that value independently on actual load parameters exactly at the time the patient removes the hands from the water with electrodes.
  • the delay element "instantaneously" cancels this and creates a delay of response of the stabilizer in tenths of seconds.
  • stabilizer 7 of output current with the delay Treg used transistor T2 connected to a common base.
  • the voltage drop caused by the output current in resistors Rll and R26 and Schottky diode D18 is compared on base transition with the preset voltage of potentiometer JPl.
  • the regulation deviation is conducted through resistor R16 to the input of the regulation deviation amplifier.
  • Diode D15 linearizes the setting process by the potentiometer, and Zener diode D8 along with resistor R22 are used to stabilize it.
  • Measurement error in standby mode is eliminated by the presence of emitter follower T13 and of input V2, which bridges diode D8 and produces zero bias of the base of transistor T2. After switching to operation mode, residual voltage is removed by Schottky diode D18 connected for the voltage in the reverse direction.
  • Amplifier 8 of regulation deviation is made up of transistors T4 and T5. Amplifier 8 of regulation deviation is controlled by N-FET transistor T7, which limits its activity to operation mode of the source. In stand-by mode, amplifier 8 of regulation deviation is switched off by high resistance of channel T7. Using the input from the electrode, amplifier 8 of regulation deviation limits the maximum output voltage in electrodes of the device.
  • Starting circuit 5 serves to switch the source from stand-by mode to operation mode and vice versa. It is formed by transistor T6 with a scanner circuit of output current with diodes D9 and D17 and resistors R12 and R25. Resistor R25 sets the amount of the switching current of both function modes.
  • the Zener diode connected in the forward direction reduces the voltage drop on resistor R25 to about 0.6 V.
  • Schottky diode D17 separates the base circuit of transistor T6 from delay element C12, C13, Rll.
  • Output VI controls indication functions of the device.
  • Circuit 6 of gradual regulation of output current is a charging RC member formed by high-capacity ceramic capacitors CIO, Cll and resistor R18.
  • the time of gradual regulation of output current is roughly given by the RC constant of this circuit and here is approx. 60 sec. This time depends on the value of the set output current.
  • the discharge circuit of capacitors CIO and Cl l is transistor T8, together with resistor R19.
  • the start of regulation of output current is determined by closing transistor T8 by signal from the starting circuit.
  • Switch (9) of stand-by and operation modes directly controls the control circuit of the switched-mode power source (3) of the device. This above given wiring is analogous to the regulation solution for the elimination of electric shock used in electrotherapy devices in case of accidental interruption of the procedure.
  • the device using electrotherapy for treatment consisting of a power supply block (1), an indication block (2), and a switched-mode power supply block with feedback (3) connected to a regulator block (4) of output current with the delay Treg does not cause electric shock to patients in case of accidental disruption of the medical procedure.
  • the presented regulation device is applicable in all devices or instruments, which use any kind of electrotherapy.

Landscapes

  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Neurology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Electrotherapy Devices (AREA)
  • Catalysts (AREA)
  • Surgical Instruments (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

Selon la présente invention, le dispositif de régulation, empêchant les chocs électriques dans les dispositifs utilisant l'électrothérapie en vue d'un traitement, est constitué d'un circuit d'amorçage (5) qui est connecté au circuit (6) pour une régulation progressive du courant de sortie, qui est en outre connecté à un amplificateur (8) de déviation de régulation, qui est interconnecté à un stabilisateur (7) de courant de sortie avec un élément à retard et un commutateur (9) de mode de fonctionnement et de veille du dispositif. Afin d'empêcher les chocs électriques dans les dispositifs utilisant l'électrothérapie en vue d'un traitement, le dispositif doit respecter les conditions suivantes entre le retard Treg du courant de sortie à partir du bloc régulateur (4), le temps Tvyp pour une commutation rapide du dispositif du mode de fonctionnement au mode de veille et le temps Trun de régulation progressive du réglage de l'amplitude du courant de sortie : Treg > Tvyp Treg « Trun. Selon l'invention, un dispositif utilisant l'électrothérapie en vue d'un traitement qui est constitué d'un bloc d'alimentation électrique (1), d'un bloc d'indication (2) et d'un bloc d'alimentation électrique de mode commuté avec rétroaction (3) connecté à un bloc régulateur (4) de courant de sortie avec le retard Treg ne cause pas de choc électrique aux patients en cas d'interruption accidentelle de la thérapie médicale lorsque le dispositif est en mode de fonctionnement.
PCT/CZ2014/000025 2013-03-09 2014-03-06 Dispositif de régulation empêchant les chocs électriques dans les dispositifs utilisant l'électrothérapie en vue d'un traitement et procédé de prévention contre les chocs électriques WO2014139486A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE112014001207.6T DE112014001207T5 (de) 2013-03-09 2014-03-06 Regulierungsgerät zum Vermeiden von Elektroschocks bei Geräten für Elektrobehandlungen und die Art des Vermeidens dieses Elektroschocks
GB1517424.6A GB2530421A (en) 2013-03-09 2014-03-06 Regulation device preventing electrical shock in devices using electrotherapy for treatment and the method of prevention of electric shock
SK50059-2015A SK288395B6 (sk) 2013-03-09 2014-03-06 Regulačné zariadenie zamedzujúce elektrický šok pri prístrojoch využívajúcich elektroliečbu na liečenie a spôsob zamedzenia tohto elektrického šoku

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZPV2013-175 2013-03-09
CZ2013-175A CZ304552B6 (cs) 2013-03-09 2013-03-09 Regulační zařízení zamezující elektrickému šoku u přístrojů využívajících elektroléčbu k léčení a způsob zamezení tohoto elektrického šoku

Publications (2)

Publication Number Publication Date
WO2014139486A1 true WO2014139486A1 (fr) 2014-09-18
WO2014139486A4 WO2014139486A4 (fr) 2014-10-30

Family

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Family Applications (1)

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PCT/CZ2014/000025 WO2014139486A1 (fr) 2013-03-09 2014-03-06 Dispositif de régulation empêchant les chocs électriques dans les dispositifs utilisant l'électrothérapie en vue d'un traitement et procédé de prévention contre les chocs électriques

Country Status (6)

Country Link
CZ (1) CZ304552B6 (fr)
DE (1) DE112014001207T5 (fr)
GB (1) GB2530421A (fr)
PL (1) PL413855A1 (fr)
SK (1) SK288395B6 (fr)
WO (1) WO2014139486A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4068669A (en) * 1975-11-24 1978-01-17 Stimulation Technology, Inc. Stimulator fault protection circuit
US4088141A (en) * 1976-04-27 1978-05-09 Stimulation Technology, Inc. Fault circuit for stimulator
US4200108A (en) * 1977-11-07 1980-04-29 Siemens Aktiengesellschaft Electromedical apparatus
EP0026324A1 (fr) * 1979-08-31 1981-04-08 Siemens Aktiengesellschaft Appareil électromédical à courant de stimulation
EP0033747A1 (fr) * 1979-06-15 1981-08-19 Matsushita Electric Works, Ltd. Dispositif therapeutique de basse frequence
EP0339313A1 (fr) * 1988-04-19 1989-11-02 HENNEBERG & BRUNNER Appareil de stimulation
WO1997015348A1 (fr) 1995-10-11 1997-05-01 Regeneration Technology Generateur et procede relatifs a des frequences bio-actives
KR20120111708A (ko) 2011-04-01 2012-10-10 페어차일드코리아반도체 주식회사 자동 재시작 회로, 이를 포함하는 스위치 제어 회로 및 스위치 제어 방법

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5800458A (en) * 1996-09-30 1998-09-01 Rehabilicare, Inc. Compliance monitor for monitoring applied electrical stimulation
EP1139554A3 (fr) * 2000-03-29 2003-12-17 Microchip Technology Inc. Démarreur progressif pour moteur électrique commandé par microcontrôleur utilisant une table d'équation d'entraínement avec synchronisation variable
JP2011244677A (ja) * 2010-04-23 2011-12-01 Rohm Co Ltd スイッチング電源の制御回路およびそれを用いたスイッチング電源、発光装置および電子機器

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4068669A (en) * 1975-11-24 1978-01-17 Stimulation Technology, Inc. Stimulator fault protection circuit
US4088141A (en) * 1976-04-27 1978-05-09 Stimulation Technology, Inc. Fault circuit for stimulator
US4200108A (en) * 1977-11-07 1980-04-29 Siemens Aktiengesellschaft Electromedical apparatus
EP0033747A1 (fr) * 1979-06-15 1981-08-19 Matsushita Electric Works, Ltd. Dispositif therapeutique de basse frequence
EP0026324A1 (fr) * 1979-08-31 1981-04-08 Siemens Aktiengesellschaft Appareil électromédical à courant de stimulation
EP0339313A1 (fr) * 1988-04-19 1989-11-02 HENNEBERG & BRUNNER Appareil de stimulation
WO1997015348A1 (fr) 1995-10-11 1997-05-01 Regeneration Technology Generateur et procede relatifs a des frequences bio-actives
KR20120111708A (ko) 2011-04-01 2012-10-10 페어차일드코리아반도체 주식회사 자동 재시작 회로, 이를 포함하는 스위치 제어 회로 및 스위치 제어 방법

Also Published As

Publication number Publication date
WO2014139486A4 (fr) 2014-10-30
GB201517424D0 (en) 2015-11-18
PL413855A1 (pl) 2017-02-27
SK500592015A3 (sk) 2015-12-03
SK288395B6 (sk) 2016-09-05
CZ2013175A3 (cs) 2014-07-02
GB2530421A (en) 2016-03-23
DE112014001207T5 (de) 2016-01-14
CZ304552B6 (cs) 2014-07-02

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