WO2005096926A1 - Capteur pour detecter des signaux myoelectriques - Google Patents

Capteur pour detecter des signaux myoelectriques Download PDF

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Publication number
WO2005096926A1
WO2005096926A1 PCT/DE2005/000623 DE2005000623W WO2005096926A1 WO 2005096926 A1 WO2005096926 A1 WO 2005096926A1 DE 2005000623 W DE2005000623 W DE 2005000623W WO 2005096926 A1 WO2005096926 A1 WO 2005096926A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrodes
sensor
base body
sensor according
electrode array
Prior art date
Application number
PCT/DE2005/000623
Other languages
German (de)
English (en)
Inventor
Andreas Schönfeld
Original Assignee
Schoenfeld Andreas
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 Schoenfeld Andreas filed Critical Schoenfeld Andreas
Priority to DE112005001404T priority Critical patent/DE112005001404A5/de
Publication of WO2005096926A1 publication Critical patent/WO2005096926A1/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
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
    • A61B5/6847—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
    • A61B5/6852—Catheters
    • A61B5/6853—Catheters with a balloon
    • 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
    • A61B5/296—Bioelectric electrodes therefor specially adapted for particular uses for electromyography [EMG]
    • 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
    • A61B5/389—Electromyography [EMG]
    • A61B5/391—Electromyography [EMG] of genito-urinary organs
    • 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
    • A61B5/389—Electromyography [EMG]
    • A61B5/392—Detecting gastrointestinal contractions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/273—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the upper alimentary canal, e.g. oesophagoscopes, gastroscopes
    • A61B1/2736—Gastroscopes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/31—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the rectum, e.g. proctoscopes, sigmoidoscopes, colonoscopes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/04—Arrangements of multiple sensors of the same type
    • A61B2562/046—Arrangements of multiple sensors of the same type in a matrix array

Definitions

  • the invention relates to a sensor according to the preamble of claim 1, for detecting myoelectric signals, with a cylindrical base body, on which at least one electrode array consisting of electrodes distributed uniformly over the circumference and lying on a circumferential circle is arranged, by means of which action currents of a muscle, in particular of a circular muscle can be detected.
  • Such a sensor is known for example from WO 99/18851 A1.
  • the difference between myoelectric potentials is measured using, for example, four electrodes distributed over the circumference. This allows the activity of a muscle to be determined.
  • the electrodes are mounted on a sensor body so that their surface is flush with the surface of the sensor body.
  • the known sensor it is necessary to place the known sensor in such a way that the electrodes are located exactly at the point at which the myoelectric signals emitted by the muscle to be examined are greatest. If the sensor is not positioned exactly, the myoelectric signals measured by the electrodes do not originate exclusively from the muscle to be examined but are not mixed with myoelectric signals from neighboring muscles. In order to make as good a statement as possible about the activity of the To be able to make the muscle, it is therefore necessary to position the sensor so that the electrodes are exactly at the location of the muscle to be examined. This is also very disadvantageous
  • the senor If the sensor is not positioned exactly, the signals received by the sensor cannot be interpreted very reliably. If in doubt, the measurement would have to be carried out again, but this is problematic. This is particularly so because it is not possible to take as many measurements in succession. Because when the muscle activity required for a measurement is repeated, the signals become weaker and weaker because of muscle fatigue.
  • a sensor for detecting myoelectric signals with a cylindrical base body, on which at least one electrode array consisting of electrodes evenly distributed over the circumference and arranged on a circumferential circle is arranged, by means of which action currents of a muscle, in particular a circular muscle, can be detected -
  • an electrode array consists of at least twelve electrodes and two identically designed electrode arrays are arranged at a short distance immediately behind one another.
  • the signals of the electrode array which has delivered the clearer that is to say generally the larger, signals being processed further.
  • the signals of all electrode arrays are first acquired and then the signals of the electrode array are used for further processing, which delivers the most plausible signals.
  • the sensor Due to the plurality of identical electrode arrays arranged at a short distance from one another, it is advantageously no longer necessary to position the sensor exactly. It is sufficient if the sensor is positioned approximately in the area of the muscle to be examined. It has been shown that one of the electrode arrays is almost always arranged in an electrode array in which the muscle to be examined emits very large, that is to say very large, myoelectric signals. Since these signals generally only have very small signal components from neighboring muscles, the signals can be interpreted very reliably.
  • the majority of the identically designed electrode arrays arranged at a short distance from one another also make it possible to detect a helically running muscle activity.
  • the sensor according to the invention not only allows the course of the muscle activity in Detect the direction of the circumference of the sensor but also a muscle activity running in the axial direction.
  • the base body has a marking to which the electrodes have a clear reference.
  • the marking which is guided outwards while maintaining its position, advantageously makes it possible to determine the position of the electrodes. This enables a geometric assignment of the course of the muscle activity to the respective body.
  • the electrodes can be elongated or punctiform.
  • Myoelectric signals, in particular of a sphincter muscle can be obtained by means of a short elongate design of the electrodes extending in the axial direction of the base body, which lies in the range of two to three millimeters, or punctiform, that is to say circular or square, with an area of approximately two to ten square millimeters grasp very well.
  • the use of relatively short, elongated or punctiform electrodes avoids the detection of signals from neighboring regions, which are often innervated simultaneously with the muscle to be examined. As a result, the sensor can advantageously be used to examine a specific area.
  • the distance between the electrodes in the axial direction of the base body is preferably chosen to be as small as possible. However, it has been found that a distance of approximately 1.5 millimeters provides very good results and can be very easily implemented in the manufacture of the sensor. Due to the small distance between the electrodes, a helical muscle activity can be detected particularly well. It is particularly advantageous if the electrodes protrude from the base body by twenty to sixty, preferably thirty to fifty, in particular approximately forty, micrometers. This ensures that the surface of the electrodes makes very good contact with the wall of the hollow organ behind which the muscle to be examined is located. In such an embodiment, it is particularly advantageous if the protrusion gradually begins at least at the axial ends of the electrodes.
  • the senor can be displaced in the axial direction without this displacement causing particular pain in the patient concerned. Because the gradually beginning protrusion of the electrodes means that there are no edges that could cause pain or injury to the patient concerned when the sensor is moved. It is very advantageous if the sensor is stiff in the area of the electrodes, as a result of which the position of the contacts remains virtually unchanged and is otherwise very flexible.
  • the electrodes are arranged on a so-called flexboard.
  • the flexboard which is essentially a thin, flexible printed circuit board, can be glued to the base body.
  • the individual electrodes are present as metallic surfaces on the surface of the flexboard.
  • the electrodes can be reached from the underside of the flexboard through a via.
  • thin connecting wires can be soldered to the electrodes, by means of which the electrodes are connected to the outside world.
  • the connecting wires can be led into the interior of the base body.
  • the electrodes can be connected to conductor tracks arranged in the flexboard.
  • the flexboard can then be designed in such a way that the area on which the electrodes are located can be applied in a cylindrical shape to the base body and the area of the flexboard in which only the connecting lines are located. which can be spirally wound onto the base body. This enables a very reliable connection of the electrodes to be achieved.
  • the sensor can be positioned very easily or fixed in a specific position.
  • the balloon can be inflated in the bladder and, when inflated, it can be pulled back to the outlet of the bladder, as a result of which the sensor is at a predetermined distance from the outlet of the bladder.
  • the predetermined distance is selected so that the sensor is then at the location of the muscle to be examined. Anatomical differences are advantageously compensated for by the majority of the electrode arrays.
  • the base body is designed as a hollow cylinder and is arranged in the feed line of the balloon. This gives you a very compact design, which is very easy to handle and easy to manufacture.
  • the senor is part of a catheter. It is particularly advantageous here if the catheter is designed as a multi-lumen catheter. This advantageously enables liquid to be introduced or discharged into the bladder, for example. When introducing liquid, reflexes can be checked and when draining liquid, the bladder can be drained. Further details, features and advantages of the present invention result from the following description of a particular exemplary embodiment with reference to the drawing.
  • FIG. 1 shows a side view of a sensor designed according to the invention
  • FIG. 2 shows the sensor shown in FIG. 1 in section along the section line A-A
  • FIG. 3 shows an electrode arrangement arranged on a flexboard
  • Figure 4 shows a further embodiment of a flexboard with an electrode arrangement arranged thereon.
  • three electrode arrays 2a, 2b, 2c are arranged on a base body 1 designed as a hollow cylinder.
  • the electrode arrays 2a, 2b, 2c are identical.
  • the electrodes from which the electrode arrays 2a, 2b, 2c are made are elongated and extend in the axial direction of the base body 1.
  • the base body 1 is made of a non-conductive material.
  • the electrodes are arranged electrically insulated from one another.
  • the electrode arrays 2a, 2b, 2c each consist of twelve electrodes, which are arranged evenly distributed over the circumference of the base body 1.
  • the electrodes are partially embedded in the base body 1; however, they protrude from the base body 1 by about forty micrometers. The protrusion of the electrodes starts gradually so there are no edges.
  • Each electrode is connected to a feed line 4, which runs inside the base body 1.
  • a marking 8 is arranged on the base body 1, which has a defined geometric reference to the electrodes of the electrode arrays 2a, 2b, 2c. The marking 8 is guided to the outside in the correct position on the base body 1.
  • the twelve leads of the electrode arrays 2a, 2b, 2c are shown in FIG. 1 as one lead.
  • the base body is arranged in the vicinity of a balloon 5 of a balloon catheter 6.
  • the base body 1 is arranged in the catheter 6 such that the center of the distance between the first electrode array 2a and the last electrode array 2c is at a predetermined distance 7 from the balloon 5.
  • the balloon catheter 6 is designed as a multi-lumen catheter, which is why it has a lumen 9.
  • the lumen 9 can be used, for example, to drain the bladder or fill the bladder to check reflections.
  • the electrodes or the electrode arrays 2a ', 2b', 2c ' can be arranged on a flexboard V.
  • the electrodes extend through the flexboard 1 'and are at least partially accessible from the rear.
  • lead wires 4 ' are soldered to the electrodes.
  • the flexboard V can be glued to the base body 1 ', so that the electrode arrays 2a', 2b ', 2c' are arranged on the base body 1.
  • the Connection wires 4 ' can then be guided into the interior of the base body 1 and from there to the outside.
  • the extension 1a" of the flexboard can be wound onto the base body 1 in a spiral, as a result of which it can be guided to the outside.

Abstract

L'invention concerne un capteur permettant de détecter des signaux myoélectriques, qui comprend un corps de base (1) cylindrique, sur lequel est monté au moins un réseau d'électrodes (2a, 2b, 2c) composé d'électrodes situées sur un cercle périphérique et réparties de manière homogène sur la périphérie. Ledit réseau d'électrodes permet de détecter les courants d'action d'un muscle, notamment d'un muscle sphincter. Ledit capteur se caractérise en ce qu'un réseau d'électrodes (2a, 2b, 2c) comprend au moins douze électrodes et qu'il est prévu au moins deux réseaux d'électrodes (2a, 2b, 2c) formés de manière identique, situés immédiatement l'un derrière l'autre, à distance réduite.
PCT/DE2005/000623 2004-04-08 2005-04-07 Capteur pour detecter des signaux myoelectriques WO2005096926A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112005001404T DE112005001404A5 (de) 2004-04-08 2005-04-07 Sensor zur Erfassung myoelektrischer Signale

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004017397A DE102004017397A1 (de) 2004-04-08 2004-04-08 Sensor zur Erfassung myoelektrischer Signale
DE102004017397.4 2004-04-08

Publications (1)

Publication Number Publication Date
WO2005096926A1 true WO2005096926A1 (fr) 2005-10-20

Family

ID=34964917

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2005/000623 WO2005096926A1 (fr) 2004-04-08 2005-04-07 Capteur pour detecter des signaux myoelectriques

Country Status (2)

Country Link
DE (2) DE102004017397A1 (fr)
WO (1) WO2005096926A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007136266A1 (fr) 2006-05-23 2007-11-29 Publiekrechtelijke Rechtspersoon Academisch Ziekenhuis Leiden H.O.D.N. Leids Universitair Medisch Ce Sonde médicale
US20120265044A1 (en) * 2009-11-13 2012-10-18 Paulus Maria Antonius Broens probe system and a probe for measuring functionality of an orifice in the human pelvic region
WO2016190763A1 (fr) 2015-05-27 2016-12-01 Borycka Kiciak Katarzyna Procédé d'évaluation de lésion de muscles du plancher pelvien, et sonde et appareil pour mettre en œuvre le procédé

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999018851A1 (fr) * 1996-04-02 1999-04-22 Nilsen Egidija R Capteur e.m.g. et systeme e.m.g. uretral multi-canaux dote de ce capteur
WO2002034328A1 (fr) * 2000-09-21 2002-05-02 Best Medical International Beheer B.V. Sonde pour le traitement de l'incontinence
US20030120328A1 (en) * 2001-12-21 2003-06-26 Transneuronix, Inc. Medical implant device for electrostimulation using discrete micro-electrodes

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3836349A1 (de) * 1988-10-25 1990-05-03 Forschungsgesellschaft Fuer Bi Katheter zur messung von motilitaet und peristaltik in schlauchfoermigen, ihren inhalt transportierenden organen mittels simultaner multipler impedanzmessung
US5579764A (en) * 1993-01-08 1996-12-03 Goldreyer; Bruce N. Method and apparatus for spatially specific electrophysiological sensing in a catheter with an enlarged ablating electrode

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999018851A1 (fr) * 1996-04-02 1999-04-22 Nilsen Egidija R Capteur e.m.g. et systeme e.m.g. uretral multi-canaux dote de ce capteur
WO2002034328A1 (fr) * 2000-09-21 2002-05-02 Best Medical International Beheer B.V. Sonde pour le traitement de l'incontinence
US20030120328A1 (en) * 2001-12-21 2003-06-26 Transneuronix, Inc. Medical implant device for electrostimulation using discrete micro-electrodes

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007136266A1 (fr) 2006-05-23 2007-11-29 Publiekrechtelijke Rechtspersoon Academisch Ziekenhuis Leiden H.O.D.N. Leids Universitair Medisch Ce Sonde médicale
JP2009538176A (ja) * 2006-05-23 2009-11-05 パブリークレヒテリケ レヒトスペルスーン アカデミッシュ ジーケンハウス ライデン エイチ．オウ．ディー．エヌ． レイズ ユニベルシテール メディシュ シーイー 医療用プローブ
AU2007252330B2 (en) * 2006-05-23 2011-11-03 Novuqare Pelvic Health B.V. Medical probe
US8983627B2 (en) 2006-05-23 2015-03-17 Publiekrechtelijke Rechtspersoon Academisch Ziekenhuis Leiden H.O.D.N. Leids Universitair Medisch Centrum Medical probe for electro-stimulation and bio-feedback training of pelvic floor musculature
US9656067B2 (en) 2006-05-23 2017-05-23 Publiekrechtelijke Rechtspersoon Academisch Ziekenhuis Leiden H.O.D.N. Leids Universitair Medisch Centrum Medical probe for electro-stimulation and training of pelvic floor musculature
US20120265044A1 (en) * 2009-11-13 2012-10-18 Paulus Maria Antonius Broens probe system and a probe for measuring functionality of an orifice in the human pelvic region
US9724036B2 (en) 2009-11-13 2017-08-08 Academisch Ziekenhuis Groningen Probe system and a probe for measuring functionality of an orifice in the human pelvic region
WO2016190763A1 (fr) 2015-05-27 2016-12-01 Borycka Kiciak Katarzyna Procédé d'évaluation de lésion de muscles du plancher pelvien, et sonde et appareil pour mettre en œuvre le procédé

Also Published As

Publication number Publication date
DE112005001404A5 (de) 2007-05-24
DE102004017397A1 (de) 2005-11-03

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