WO1997015347A1 - Dispositif de stimulation - Google Patents

Dispositif de stimulation Download PDF

Info

Publication number
WO1997015347A1
WO1997015347A1 PCT/EP1996/004673 EP9604673W WO9715347A1 WO 1997015347 A1 WO1997015347 A1 WO 1997015347A1 EP 9604673 W EP9604673 W EP 9604673W WO 9715347 A1 WO9715347 A1 WO 9715347A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
cannula
stimulation device
catheter
conductive connection
Prior art date
Application number
PCT/EP1996/004673
Other languages
German (de)
English (en)
Inventor
Wilhelm WASKÖNIG
Original Assignee
Waskoenig Wilhelm
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 Waskoenig Wilhelm filed Critical Waskoenig Wilhelm
Priority to EP96937259A priority Critical patent/EP0957976A1/fr
Publication of WO1997015347A1 publication Critical patent/WO1997015347A1/fr

Links

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
    • A61N1/05—Electrodes for implantation or insertion into the body, e.g. heart electrode
    • A61N1/0551—Spinal or peripheral nerve electrodes
    • 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
    • A61N1/36021—External stimulators, e.g. with patch electrodes for treatment of pain
    • 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
    • A61N1/36017—External stimulators, e.g. with patch electrodes with leads or electrodes penetrating the skin

Definitions

  • the invention relates to a stimulation device, in particular intended for the stimulation of vascular nerve sheaths or in the paramedular area, comprising a voltage source and connected to it first and second electrodes which can be brought into conductive connection via a body, of which a first electrode is a section of a tip in particular is in the injection device to be stimulated, such as a cannula with an opening for injecting pharmaceuticals such as anesthetics, and the second electrode runs at a distance from it.
  • a so-called unipolar stimulation takes place in such a way that the cathode is positioned in the form of the cannula tip at a body point in which nerve tracts are sought and the counterelectrode is attached to another part of the body at a distance from it.
  • the cannula is normally cathode and the other electrode is anode. Due to the arrangement of the electrodes, there is a relatively large distance between them, so that it cannot be determined with sufficient certainty whether the tip of the cannula is actually at the location where an anesthetic is to be injected later Checking of the tissue existing between the electrodes can take place, which can lead to loss of performance during the stimulation
  • bipolar instruments for the stimulation of peripheral nerves are also known, in which a needle forming an electrode is surrounded by an outer cannula.
  • the needle's sole purpose is to search for pe ⁇ phere nerve pathways
  • a bipolar electrode for generating a restricted electric field is suggested in order to find neutral structures precisely, with the possibility of simultaneous injection of pharmaceuticals the bipolar electrode is designed as a cannula, within which the electrodes isolated from one another run
  • a neuro electrode according to DE 36 02 219 AI has a first electrode at a front end and at a distance from it a second electrode, each of which is led to the outside via electrical lines and is connected there with connectors.
  • the neuroelectrode itself is provided with a spool channel, which has radial openings through which liquid can be fed to the vascular nerve sheath with little pressure. If it is designed as a catheter, the bipolar neuroelectrode can preferably also be inserted into the EpiduraL / Spinal- be pushed forward
  • the present invention is based on the problem of developing a stimulation device of the type mentioned at the outset in such a way that it is very precise and simple measures can be used to stimulate areas of the body, in particular vascular sheaths or in paramedular areas, in order to subsequently inject necessary pharmaceuticals such as anesthetics.
  • the problem is essentially solved in that the injection device in the form of a cannula is made of metal and is electrically insulated on the outside by a coating except for an area forming the first electrode, and in that a distance from the first electrode is on the outside of the cannula arranged conductive connection that forms the second electrode.
  • the cannula itself can be provided with the first and second electrodes with simple measures, it only being necessary for the cannula to be coated with a coating material such as polyester.
  • the cannula is then exposed in the area of the tip or remains covered during coating in order to form the first electrode.
  • the second electrode is then applied, for example, by vapor deposition of an electrical conductor such as a conductor track on the outside of the coated cannula, it being possible for the distance between the end of the electrically conductive connection and the first electrode to be in the range of approximately 0.8 cm.
  • the electrically conductive connection which can correspond to a conductor track of printed circuits, should run on the side of the cannula that lies opposite the opening.
  • a stimulation device of the type mentioned at the outset is characterized in that the injection device is an inner cannula or a catheter which or which is surrounded by an outer or indwelling cannula, the second electrode starting from the outer cannula or inner cannula or the catheter.
  • the injection device is a catheter, according to a design to be emphasized, it has at least one lateral opening and is closed in its tip, the tip being designed as a first electrode or the first electrode being embedded in the tip.
  • the first electrode of the catheter can preferably be connected to the voltage source via a conductor, such as wire, which may run inside the catheter or in its wall.
  • a conductor such as wire
  • the second electrode is formed by a section of the outer cannula or indwelling cannula
  • a further development of the invention provides that the section forming the second electrode on the outside of the cannula preferably runs in the opposite region to the opening of the injection cannula.
  • the outer cannula or indwelling cannula consists of plastic, in which an electrically conductive connection, such as embedded or extrusion-coated wire, runs to the section forming the second electrode.
  • the section of the outer cannula forming the second electrode can be anode.
  • the distance between the electrodes should preferably be less than 1 cm, as a result of which, as mentioned, losses due to body resistance are largely ruled out, so that the stimulators which are otherwise complex and expensive in terms of circuitry are not required. Rather, a simple electrical component is required which, in addition to a battery, essentially comprises only one current limiter. Because of the simple and therefore inexpensive design of the stimulation device, it can be thrown away after a single use.
  • 1 is a schematic diagram of a catheter device
  • FIG. 2 shows a first embodiment of a cannula with a conductor applied on the outside
  • Fig. 3 shows a second embodiment of a cannula with applied on the outside
  • FIGS. 4 shows an injection cannula arranged in an indwelling cannula, in particular intended for a catheter device according to FIGS. 1 and
  • FIG. 5 shows a catheter, in particular for the catheter device according to FIG. 1.
  • FIG. 1 shows, in principle, a catheter device 10 which shows an inner cannula 12 with a ground point 14 and a indwelling cannula 16 which surrounds the inner cannula 12.
  • the inner cannula 12 merges distally into an attachment piece 18 with a handle, not shown.
  • the attachment 18 can be connected via a Luer lock connection to an attachment piece 22 from which the indwelling cannula 16 extends.
  • a closable attachment piece 24 is provided, for example in order to be able to connect a syringe to the cannula 14
  • the metal cannula 12 is connected via an electrical cable 22 to an electrical component (not shown), which can essentially comprise a battery and a current limiter.
  • the cable 22 can be in an electrically conductive connection to a first electrode, as is shown in FIG 2 to 4 is description.
  • the second electrode can in turn originate from the indwelling cannula 16 or from the cannula 12 itself, a defined distance between the first and second electrodes being specifiable
  • two cannulas 48, 50 made of conductive material such as steel are shown, which have a ground point (FIG. 2) or a pencil point (FIG. 3).
  • the respective cannula 48, 50 is electrically detached from the outside thereof Insulating material coated like polyestei, the coating 60, 62 being exposed in the area of the respective tip 52 or 54 of the cannula 48, 50, so that a first electrode 56 or 58 is available.
  • the free electrode 56 act as a cathode and in the case of the cannula 50 with a pencil point as an anode, that is to say on the respective coating 60 or 62 of the cannula 48 or 50 there is in the longitudinal direction of the respective cannula 48, 50 an electrically conductive strip such as conductor track 64, 66 eg applied by vapor deposition, the conductor track 64, 66 ending, for example, at a distance of approximately 0.8 cm from the tip of the cannula 48, 50, ie the electrode 56 or 58.
  • the electrical conductor track 64, 66 thus acts in its end region 68, 70 as a second electrode, which should be an anode for the cannula 48 and a cathode for the cannula 50
  • FIG. 4 shows a section of a catheter device, the basic structure of which may correspond to that of FIG. 1. However, one with a pencil point is used as the cannula 12.
  • the cannula 10 can be made of metal and is electrically insulated on the outside by, for example, a 50 ⁇ m thick layer except for an area 34 located in the area of the tip 30 and forming a first electrode.
  • the coating itself can be produced by powder coating.
  • the second electrode is formed by an indwelling cannula 42 which surrounds the cannula 12 on the outside.
  • the indwelling cannula 42 is preferably made of plastic and has, in its area remote from the lateral opening 28 of the cannula 12, an area 44 which forms the second electrode and which can be an anode.
  • the dimensions of the cannula 12 or the extent of the indwelling cannula 42 along the outer surface of the cannula 12 and the location of the first electrode 34 are chosen such that the distance between the electrodes 34, 44 is smaller than the distance between the second electrode 44 and the is lateral opening or the eye 28, provided the cannula 10 should not be electrically insulated on the inside.
  • the indwelling cannula 42 is preferably made of plastic, an electrical connection to the electrode 44 must run within the indwelling cannula 42. This can be done by means of a wire 46 which is let into or injected into the indwelling cannula 42.
  • an electrical conductor to the outer surface of the indwelling cannula 42, such as vapor deposition, and then covering it with electrically insulating material down to the tip region which forms the second electrode 44.
  • FIG. 4 there would of course also be the possibility of arranging the second electrode on the outer surface of the cannula 10 in accordance with the exemplary embodiment in FIG. 3.
  • the indwelling cannula 16 After removal of the cannula 12, the indwelling cannula 16 remains in the body of a patient as an insertion aid for a catheter 76.
  • a corresponding catheter 76 can be seen from the basic structure of FIG. 5.
  • the catheter 76 to be inserted into the indwelling cannula 16 can be designed as a unipolar or bipolar stimulation catheter.
  • a unipolar strategymulation catheter is present when the catheter 76 has a first electrically conductive electrode and the other electrode originates, for example, from the indwelling cannula 16 in the manner described above or is constructed in a manner known in the art.
  • the catheter 76 is basically shown as a unipolar screenm catheter.
  • the catheter 76 is made of electrically insulating material and has a closed tip 78 and at a distance from it in a known manner at least one opening 80, even if more than one opening 80 are shown in the exemplary embodiment.
  • the first electrically conductive electrode 82 is arranged on the closed tip 78.
  • a lenticular element made of electrically conductive material is arranged on the tip 78 for this purpose. This can be done, for example, by partially overmolding.
  • An electrical conductor such as wire 84 which is guided within the catheter 76, then emanates from the electrode 82 and is led outward from the catheter device to the electrical circuit, via which the voltage required to facilitatemulate the paramedular area to be checked is applied.
  • a second electrically conductive electrode to the outer surface of the catheter 76. This can be done, for example, by vapor deposition or other suitable measures, the electrically conductive connection from the second electrically conductive electrode to the electrical connection being covered in turn by electrically insulating material It would also be possible to lay an electrical conductor inside the catheter wall, which emerges from the wall at a desired location in order to form the second electrode
  • the wire 84 may be bent at the distal end to the catheter and subsequently by a detachable part of a stimulator adapted This has the advantage that stimulated simultaneously and can be ied in j as the outwardly guided wire does not affect the required tightness between catheter and syringe

Abstract

L'invention concerne un dispositif de stimulation, servant notamment à stimuler les gaines de nerfs vasomoteurs ou s'utilisant dans la région paramédullaire. Ce dispositif comprend une source de tension, ainsi que deux électrodes connectées à la source de tension et pouvant être placées en connexion conductrice par l'intermédiaire d'un élément. Une première électrode consiste en une section (14) située côté pointe, d'une canule (12) à introduire dans la zone du corps à stimuler et comportant une ouverture pour injecter des médicaments tels que des anesthésiques. La seconde électrode consiste quant à elle en une connexion conductrice disposée côté extérieur, sur la canule, à distance de la première électrode.
PCT/EP1996/004673 1995-10-27 1996-10-26 Dispositif de stimulation WO1997015347A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP96937259A EP0957976A1 (fr) 1995-10-27 1996-10-26 Dispositif de stimulation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29517060U DE29517060U1 (de) 1995-10-27 1995-10-27 Stimulationseinrichtung
DE29517060.3 1995-10-27

Publications (1)

Publication Number Publication Date
WO1997015347A1 true WO1997015347A1 (fr) 1997-05-01

Family

ID=8014694

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/004673 WO1997015347A1 (fr) 1995-10-27 1996-10-26 Dispositif de stimulation

Country Status (3)

Country Link
EP (1) EP0957976A1 (fr)
DE (1) DE29517060U1 (fr)
WO (1) WO1997015347A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003022354A2 (fr) * 2001-09-04 2003-03-20 Seleon Gmbh Neurostimulateur, appareil de commande associe et procede de transmission de donnees
DE102007009425A1 (de) 2006-12-29 2008-07-03 Waskönig, Wilhelm, Aguadulce Bipolare Stimulationsnadel sowie Verfahren zum Herstellen einer solchen
WO2020104258A1 (fr) * 2018-11-23 2020-05-28 Pajunk GmbH Medizintechnologie Canule multipolaire
WO2020104259A1 (fr) * 2018-11-23 2020-05-28 Pajunk GmbH Medizintechnologie Canule multipolaire

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5853373A (en) * 1996-08-05 1998-12-29 Becton, Dickinson And Company Bi-level charge pulse apparatus to facilitate nerve location during peripheral nerve block procedures
CA2212498A1 (fr) * 1996-08-05 1998-02-05 Jonathan C. Newell Ensemble aiguille de stimulation electrique d'un nerf
DE19640670B4 (de) * 1996-10-02 2005-11-03 Süddeutsche Feinmechanik GmbH Bipolare Elektrode
DE102005035628A1 (de) * 2005-07-29 2007-02-01 Peter Feucht Injektionsspritze mit einer Injektionsnadel

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2652050A1 (de) * 1976-11-15 1978-05-24 Dieter Dr Med Theiss Elektroden-kombination zur lokalisation von nervalen strukturen, durch die lokalanaesthetika oder neurolytika injiziert werden koennen
EP0158397A2 (fr) * 1984-04-12 1985-10-16 Tom Porcelijn Instrument pour l'anesthésie locale et son bouchon
DE3602219A1 (de) * 1986-01-25 1987-07-30 Vygon Erzeugnisse Neuroelektrode
WO1992007605A1 (fr) * 1990-11-05 1992-05-14 Ravi Xavier Catheter implantable a plusieurs electrodes servant a administrer un medicament
US5423877A (en) * 1992-05-04 1995-06-13 David C. Mackey Method and device for acute pain management by simultaneous spinal cord electrical stimulation and drug infusion

Family Cites Families (8)

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DE2638580A1 (de) * 1976-08-27 1978-03-02 Kramer Fritz Dr Med Dent Elektroakupunktur-sonde
CS228175B1 (en) * 1982-02-26 1984-05-14 Kocur Pavel Ing.,Cs Contact electrode
DE3229466A1 (de) * 1982-08-06 1984-02-09 Sterimed Gesellschaft für medizinischen Bedarf mbH, 6600 Saarbrücken Punktier- und katheterisiervorrichtung fuer menschliche oder tierische koerper
DE3512482C2 (de) * 1985-04-04 1994-01-20 Doron Dr Mehler Katheterset
DE8604472U1 (de) * 1986-02-20 1986-10-30 KÜBLER, Norbert Bipolare Elektrode zur Erzeugung eines beschränkt ausgerichteten elektrischen Feldes, um nervale Strukturen präzise aufzufinden, wobei die Möglichkeit zur Simultaninjektion von Pharmaka besteht
DE8803153U1 (fr) * 1988-03-09 1988-06-23 B. Braun Melsungen Ag, 3508 Melsungen, De
DE8809231U1 (fr) * 1988-07-19 1988-09-01 Kastl Kg Electronic, 6731 Lindenberg, De
DE3941872A1 (de) * 1989-12-19 1991-06-20 Christian Ertl Einrichtung und verfahren zur auffindung und festlegung von akupunkturpunkten

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2652050A1 (de) * 1976-11-15 1978-05-24 Dieter Dr Med Theiss Elektroden-kombination zur lokalisation von nervalen strukturen, durch die lokalanaesthetika oder neurolytika injiziert werden koennen
EP0158397A2 (fr) * 1984-04-12 1985-10-16 Tom Porcelijn Instrument pour l'anesthésie locale et son bouchon
DE3602219A1 (de) * 1986-01-25 1987-07-30 Vygon Erzeugnisse Neuroelektrode
WO1992007605A1 (fr) * 1990-11-05 1992-05-14 Ravi Xavier Catheter implantable a plusieurs electrodes servant a administrer un medicament
US5423877A (en) * 1992-05-04 1995-06-13 David C. Mackey Method and device for acute pain management by simultaneous spinal cord electrical stimulation and drug infusion

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003022354A2 (fr) * 2001-09-04 2003-03-20 Seleon Gmbh Neurostimulateur, appareil de commande associe et procede de transmission de donnees
WO2003022354A3 (fr) * 2001-09-04 2003-08-07 Seleon Gmbh Neurostimulateur, appareil de commande associe et procede de transmission de donnees
DE102007009425A1 (de) 2006-12-29 2008-07-03 Waskönig, Wilhelm, Aguadulce Bipolare Stimulationsnadel sowie Verfahren zum Herstellen einer solchen
WO2020104258A1 (fr) * 2018-11-23 2020-05-28 Pajunk GmbH Medizintechnologie Canule multipolaire
WO2020104259A1 (fr) * 2018-11-23 2020-05-28 Pajunk GmbH Medizintechnologie Canule multipolaire

Also Published As

Publication number Publication date
DE29517060U1 (de) 1996-02-08
EP0957976A1 (fr) 1999-11-24

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