Classifications

• • 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
• • 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
  • A61N1/36003—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation of motor muscles, e.g. for walking assistance
• • 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
  • A61N1/36034—Control systems specified by the stimulation parameters
• • 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
  • A61N1/3601—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation of respiratory organs

Definitions

• said generator comprises a pulse generator with variable and random width and / or amplitude.
• said pulse generator is adapted to produce pulses of random width and of amplitude inversely proportional to the width. Thanks to these provisions, it is possible to produce stimulation installations of which at least some of the parameters of the voltage or of the pulse current vary continuously, which makes it possible to avoid a habituation of the patient as occurs when the characteristics of the current are predetermined and / or relatively constant or repetitive.
• analog devices such as the generator of random signals makes it possible to produce installations according to the invention in a simple, inexpensive manner and the consumption of electrical energy is low.
• the microcomputer 2 receives its energy via the cable 10 and is provided with a keyboard 11, a display 12 and a printer 13.
• the push-button 14 is a reset and the switch 15 determines whether the microcomputer is in program loading mode from a cassette, the reader of which connects to connector 16 or whether the program is running, that is to say, first input of the parameters and, secondly, actual operation.
• the switch 17 is intended to immediately stop operation with reset of the currents.
• this microcomputer may be constituted by memories of the EPROM type.
• the analog assembly 3 receives the commands from the microcomputer 2 by a flat cable 18, it has its own power supply and is connected to the sector by the cable 19,
• the galvanometers 21, 22 indicate what are the amplitudes of the initial alternating currents applied to the pairs of electrodes A 1 , A- and B 1 , B_.
• Potentiometers 23, 24 allow the gain adjustment of the amplifiers delivering these initial currents to be adjusted.
• the frequency of these currents is set by potentiometer 25 and the basic value of this frequency is indicated by frequency meter 26.
• 20 tor 30 is determined by the voltage from potentiometer 25 and the sinusoidal, rectangular or triangular alternating current of constant amplitude which results therefrom is supplied on the one hand to the frequency meter 26, which therefore indicates the frequency of the initial basic current and , on the other hand, on one
• 35 frequency is determined by the oscillator 30 and whose envelope curve 36 is determined from the microcomputer 2 so that this microcomputer determines the shape and the rise time T. of the signal, the duration of the plateau T 3 , the shape and the fall time T_ of this signal as well as the spacing T. between the various signals.
• the apparatus which is referenced at 500, comprises: on the one hand, a control member or generator of random signals 200 which comprises the following members:. a noise generator 210 which supplies a random or pseudo-random voltage,. an adjustable threshold detector 211 which doses the quantity of selected pulses,. a re-triggerable variable width pulse generator 212 which supplies the pulses of random duration and frequency,. an oscillator 213 which serves as a clock for the device,. a logic switch 214 which switches the signals,. interrupt logic 215 which suppresses the arrival of signals,
• variable width trigger pulse generator 212 provides a random voltage fluctuating around an average voltage.
• This generator comprises a monostable rocker, not shown, the period of which is made variable thanks to a partial integration of the output pulses of the detector with adjustable threshold 211.

Landscapes

• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• General Health & Medical Sciences (AREA)
• Engineering & Computer Science (AREA)
• Biomedical Technology (AREA)
• Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
• Radiology & Medical Imaging (AREA)
• Animal Behavior & Ethology (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Heart & Thoracic Surgery (AREA)
• Biophysics (AREA)
• Physical Education & Sports Medicine (AREA)
• Electrotherapy Devices (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=9307904

Family Applications (1)

Country Status (3)

Families Citing this family (10)

Family Cites Families (6)

• 1984
  • 1984-09-20 FR FR8414456A patent/FR2570529B1/fr not_active Expired - Lifetime
• 1985
  • 1985-09-20 WO PCT/FR1985/000256 patent/WO1986001733A1/fr not_active Ceased
  • 1985-09-20 EP EP85904642A patent/EP0194298A1/de not_active Withdrawn

Non-Patent Citations (1)

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