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
  • A61N1/04—Electrodes
  • A61N1/0404—Electrodes for external use
  • A61N1/0472—Structure-related aspects
  • A61N1/0492—Patch electrodes
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B5/00—Measuring for diagnostic purposes; Identification of persons
  • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
  • A61B5/25—Bioelectric electrodes therefor
  • A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
  • A61B5/291—Bioelectric electrodes therefor specially adapted for particular uses for electroencephalography [EEG]
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B5/00—Measuring for diagnostic purposes; Identification of persons
  • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
  • A61B5/316—Modalities, i.e. specific diagnostic methods
  • A61B5/369—Electroencephalography [EEG]
  • A61B5/375—Electroencephalography [EEG] using biofeedback
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
  • A61N1/00—Electrotherapy; Circuits therefor
  • A61N1/02—Details
  • A61N1/04—Electrodes
  • A61N1/0404—Electrodes for external use
  • A61N1/0408—Use-related aspects
  • A61N1/0456—Specially adapted for transcutaneous electrical nerve stimulation [TENS]
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
  • A61N1/00—Electrotherapy; Circuits therefor
  • A61N1/02—Details
  • A61N1/04—Electrodes
  • A61N1/0404—Electrodes for external use
  • A61N1/0472—Structure-related aspects
  • A61N1/048—Electrodes characterised by a specific connection between lead and electrode
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
  • A61B2560/04—Constructional details of apparatus
  • A61B2560/0406—Constructional details of apparatus specially shaped apparatus housings
  • A61B2560/0412—Low-profile patch shaped housings

Definitions

• the present invention relates to the field of devices either providing electrical impulses at the body, in particular the skull, for neurostimulation purposes, or receiving electrical pulses by biofeedback.
• Neurostimulation is a well-known technique that consists of using electrical pulses to generate action potentials on nerves.
• a problem that arises in the application of this method is that the neurostimulation apparatus according to the state of the art still contain cables for connecting the electronic device to the contact electrode with the skin. These cables are clearly a brake to use in any application related to sleep. They can indeed easily wrap on the patient and pick up the electrode. They thus force the patient to maintain a stable position during sleep, which is not the case if his sleep is somewhat agitated.
• US 4,112,941 discloses the assembly of an improved biomedical electrode and a connector.
• the latter comprises a magnet facilitating coupling with a protruding part of the electrode.
• the electrical contact between the connector and the electrode is along the projecting portion to form a gap between the connector and the electrode plate. This space serves to provide some game to the assembly.
• the invention aims to allow the attachment of a small autonomous electronic device on the body of a patient, in particular the skull, in applications requiring the supine position of the patient.
• the invention aims to allow the stimulation of the upper branch of the trigeminal nerve in a comfortable, simple and compatible with use during sleep.
• a first aspect of the present invention relates to a self-contained apparatus for attachment to a body portion, comprising a bipolar flat support electrode provided on one side with a conductive adhesive gel for adhesion to the skin.
• a light electronic device capable of generating or receiving electric currents respectively to or from the body, via the electrode, means for mechanically fastening the electronic apparatus to the electrode and means for the passage of electric current from the electronic device to the electrode and vice versa
• said fixing means comprise two permanent magnets located on the electronic device, electrically conductive and each adapted to cooperate with a magnetizable metal area located on the face of the opposite electrode to the face intended to be in contact with the skin.
• the apparatus according to the invention further comprises one or a suitable combination of the following characteristics:
• the magnetizable metal zone consists of a ferromagnetic surface
• the ferromagnetic surface contains iron, cobalt, nickel and / or one of their alloys
• the two permanent magnets are electrically conductive or coated with an electrical conductor which allows the passage of current between the apparatus and the electrode;
• each permanent magnet is a rare earth alloy magnet
• the rare earth alloy magnet is a neodymium iron boron magnet; the rare earth alloy magnet is a samarium-cobalt magnet;
• the rare earth alloy magnet is coated with a layer of nickel, copper, zinc, chromium, gold, silver or epoxy resin;
• the rare earth alloy magnet has a maximum energy product BH max of between 30 and 52 MGOe;
• each permanent magnet is cylindrical with an axis perpendicular to the surface of the apparatus intended to come into contact with the electrode;
• the electronic device has a flat housing and approximate diamond shape
• the electrode comprises two circular magnetizable zones whose respective centers have the same spacing as the respective centers of the two magnets located on the electronic apparatus, on its face intended to contact the electrode.
• Another aspect of the present invention relates to a use of the above apparatus for the stimulation of supraorbital and supraorbital afferents of the upper branch of the trigeminal nerve for activity recording.
• bioelectric in a biofeedback application or, more generally, in the context of an application where the patient is in a supine position or for an application during sleep.
• Figure 1 shows an embodiment of autonomous electronic device for front fixing at the head, according to the present invention.
• FIG. 2 represents an embodiment of an electrode suitable for fixing the electronic device according to FIG. 1. Detailed description of the invention
• the object of the invention is an assembly consisting of an autonomous electronic device, that is to say without wires or cables and powered by a rechargeable battery, and an electrode allowing it to attaching to a body part, preferably the head, preferably the forehead, so as to stimulate the muscles and / or nerves, or to record the bioelectrical activity of the patient.
• the electrode according to the invention is a bipolar electrode with dimensions chosen to be comfortable to use and to stimulate the supraorbital and supratrochlear afferents of the upper branch of the trigeminal nerve (for a form of execution modality and preferred dimensions, see US 2009/0210028). It has, on its inner side, a layer of self-adhesive gel allowing an autonomous adhesion on the skin of the skull and, on its external face, a magnetizable metal part (for example of soft iron).
• the apparatus according to the invention is provided with at least two powerful permanent magnets, preferably two magnets, which allow:
• the electrode-apparatus system is maintained permanently and allows use by the patient in supine position;
• the magnets are attracted by the magnetizable parts on the electrode and thus position themselves spontaneously in the appropriate places. This allows to reposition the device without the need for light (for example during the night), or mirror;
• the magnetization connection avoids the mechanical forces on potentially fragile parts of an electrode
• the magnets remain motionless, unlike a mechanical type connection that can move during a head movement for example or that can generate games by repeated use .
• the apparatus is designed in materials chosen to be made very light, which avoids exercising too much stress on the electrode and prevents it from peeling off.
• the connector magnet could also allow a facilitated connection in the use of an occipital stimulation headband.
• the apparatus 2 has a generally diamond-shaped flat shape, as shown in FIG. 1.
• the two magnets 4 are advantageously of the Neodymium NdFeB sintered type (neodymium-iron). boron). They can be optionally coated or coated with a metal layer, for example nickel, copper, zinc, chromium, gold, silver, etc., or partially epoxy resin, so as to provide protection against corrosion or improve the passage electric current. They have a bond strength of the order of 250 g and a maximum energy product (BH max ) of the order of 48 MGOe.
• the magnets 4 are cylindrical.
• the electrode 1 is a bipolar gel self-adhesive electrode and has on its outer face, as shown in Figure 2, two circular magnetizable zones 3, whose centers have the same spacing (or center distance) as the respective centers of two magnets 4 on the device 2.

Applications Claiming Priority (2)

Publications (1)

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ID=47624021

Family Applications (1)

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Family Cites Families (6)

• 2012
  • 2012-01-13 BE BE2012/0025A patent/BE1020458A3/fr active
• 2013
  • 2013-01-03 WO PCT/EP2013/050047 patent/WO2013104552A1/fr active Application Filing
  • 2013-01-03 EP EP13701576.4A patent/EP2833787A1/de not_active Withdrawn
• 2014
  • 2014-07-10 US US14/328,396 patent/US20140324146A1/en not_active Abandoned

Non-Patent Citations (1)

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