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WO2009060211A1 - Dispositif de stimulation électrique d'un tissu et procédé de fabrication de ce dispositif - Google Patents

Dispositif de stimulation électrique d'un tissu et procédé de fabrication de ce dispositif Download PDF

Info

Publication number
WO2009060211A1
WO2009060211A1 PCT/GB2008/003761 GB2008003761W WO2009060211A1 WO 2009060211 A1 WO2009060211 A1 WO 2009060211A1 GB 2008003761 W GB2008003761 W GB 2008003761W WO 2009060211 A1 WO2009060211 A1 WO 2009060211A1
Authority
WO
WIPO (PCT)
Prior art keywords
tissue
control unit
dressing
adhesive surface
electrode
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/GB2008/003761
Other languages
English (en)
Inventor
David John Chapman-Jones
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Synapse Medical Solutions Ltd
Original Assignee
Synapse Medical Solutions Ltd
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 Synapse Medical Solutions Ltd filed Critical Synapse Medical Solutions Ltd
Publication of WO2009060211A1 publication Critical patent/WO2009060211A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • A61N1/20—Applying electric currents by contact electrodes continuous direct currents
    • A61N1/205—Applying electric currents by contact electrodes continuous direct currents for promoting a biological process
    • 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
    • A61N1/0468—Specially adapted for promoting wound healing
    • 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
    • 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
    • A61N1/0464—Specially adapted for promoting tissue growth
    • 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
    • A61N1/326—Applying electric currents by contact electrodes alternating or intermittent currents for promoting growth of cells, e.g. bone cells

Definitions

  • the present invention relates to an apparatus for treating tissue, in particular to an apparatus for regeneration and repair of damaged tissue by application of electrical current to the tissue via electrodes contained in the dressing.
  • the damaged tissue may be skin and the damage may be a wound, such as a laceration or an incision.
  • the damaged tissue may be tendons or ligaments and the damage caused by overuse or misuse.
  • the present invention also relates to a method of manufacturing the aforesaid apparatus as an integrated dressing.
  • Human or animal tissue is susceptible to many forms of damage.
  • the damage can have many causes, including: non-complicated acute wounding, complicated chronic wounding, trauma, exercise related trauma and pathological damage.
  • Complicated chronic wounding may include wounds such as diabetic and venous ulcers, pressure sores and burns. Trauma wounds may include lacerations, contusions, incisions and blunt trauma such as bullet injuries. Exercise related trauma may occur to muscles, tendons and ligaments as a result of overuse, misuse and abuse. Pathological damage may cause joint problems, such as osteo-arthritis and rheumatoid arthritis.
  • Electrodes are fixed to the treatment area and a current generating device is connected to the electrodes.
  • Some existing current generating devices for supplying current to electrodes fixed to a treatment area are described in international patent publication nos. 00/02622, 01/03768, 98/23326 and 98/40121 and United States patent no. 5,395,398. All of the current generating devices described in the aforementioned documents comprise a remote unit with attached electrodes. The electrodes must be fixed to the treatment area, typically with tape. Wires connect the electrodes to the current generating unit which is remote from the treatment area. Treatment with such devices requires specialist knowledge about the operation of the device and electrodes, including knowing where to locate the electrodes and how to connect them to the current generating device. This often necessitates frequent visits to clinics by a user of the device.
  • Electrodes are sewn into the housing, they are not necessarily fixed to the treatment area appropriately even when the housing is correctly worn.
  • the size and shape of the treatment area around which the housing is worn can vary from one user to another and even change shape or size over time.
  • the treatment area itself can change its physical condition as it is repaired.
  • An integrated dressing comprising electrodes built-in to the dressing is described in UK patent no. 2406519 (incorporated herein by reference) and related overseas patents and co-pending applications.
  • the dressing described in this patent includes electrodes integrated into the dressing.
  • the control unit which is connected to the electrodes may or may not be integrated into the dressing.
  • One advantage with this type of arrangement is that the electrodes are held in place securely near or adjacent to the tissue which is to be treated and do not need to be attached separately to the tissue. As the tissue changes shape, e.g. during hearing or exercise, the electrodes remain held securely in place with the dressing.
  • apparatus for providing electrical stimulation to tissue comprising: a control unit; at least one electrode connected to the control unit; and a fixation element adapted to hold the at least one electrode against the tissue and hold the control unit in a fixed position with respect to the tissue, wherein the control unit is configured to supply electrical current to the at least one electrode for stimulation of the tissue.
  • the fixation element is a substrate having a first adhesive surface to be applied to the tissue, wherein the control unit and the at least one electrode are located on the first adhesive surface which is to be applied to the tissue.
  • the at least one electrode is fixed on the control unit. In another embodiment of the present invention, the at least one electrode is connected to the control unit by a conductive element.
  • the conductive element may be exposed and non-insulated.
  • the conductive element is located between an insulator and the first adhesive surface.
  • the insulator may extend the entire length of the conductive element.
  • the substrate has an aperture through which a dressing can be applied to the tissue such that the dressing or adhesive surface can be applied to and detached from the tissue independently of each other.
  • the substrate may have a second adhesive surface opposite the first adhesive surface, wherein the second adhesive surface is adapted for contact with a dressing and wherein the substrate has an aperture through which a contact surface of the dressing can protrude for contact with the tissue when the substrate is affixed to the dressing.
  • the apparatus of any one of the preceding claims may comprise at least two electrodes which may disposed each side of the aperture so that electrical current can be supplied across an area which is to be treated.
  • the substrate is rectangular in shape and the aperture is dimensioned to be larger than a conventional dressing.
  • a method of manufacturing an integrated dressing for treatment of tissue via electrical stimulation comprising: placing a control unit and at least one electrode connected to the control unit on a first adhesive surface of a fixation element; and applying a dressing to a second adhesive surface of the fixation element, wherein the substrate has a second adhesive surface opposite the first adhesive surface, and wherein the fixation element has an aperture through which a contact surface of the dressing can protrude when the substrate is affixed to the dressing.
  • the method comprises: applying an insulator over a conductor which connects the at least one electrode to the control unit.
  • the insulator may be located between the tissue and the fixation element.
  • Figure 1 is a perspective view of the apparatus according to one embodiment of the present invention.
  • Figure 2 is an exploded perspective view of the apparatus of Figure 1;
  • Figure 3 is a top plan view of the apparatus of Figure 1 used with a conventional tissue dressing according to a first particular embodiment of the invention
  • Figure 4 is perspective view of the apparatus of Figure 1 when applied to tissue.
  • Figure 5 is a perspective view of the apparatus of Figure 1 integrated with a conventional tissue dressing according to an alternative embodiment of the invention. DETAILED DESCRIPTION OF THE DRAWINGS
  • the apparatus 1 is disposable according to regulations relating to electronic waste.
  • the apparatus 1 comprises an adhesive substrate 2 which is rectangular in shape, preferably the same shape as a conventional tissue dressing.
  • the substrate has two opposing surfaces, namely: a first adhesive surface 3 and a second surface 4.
  • a control unit 5 substantially, which is identical in function and operation to the control unit described in UK patent no. 2406519, is disposed on the first adhesive surface 3.
  • Two electrodes, namely a first electrode 6 and second electrode 7 are also depicted.
  • the first electrode 7 is connected and attached directly (by adhesive or other means) to the surface of the control unit on the opposite side of the control unit to the first adhesive surface 3.
  • the first electrode 6 and control unit 5 may be located at or in proximity to a first edge
  • the second electrode 7 is affixed directly to the first adhesive surface 3 at a second edge
  • the second electrode 7 is connected via a second electrical connection to the control unit 5.
  • the second electrical connection is depicted in Figures 1 and 2 as a non-insulated wire conductor 8.
  • the control unit 5 contains electronic circuitry and a power supply which will be known to a person skilled in the art from UK patent no. 2406519.
  • the electronic circuitry is connected to the electrodes 6, 7 and supplies electrical current in such a way that it passes between the two electrodes across the area which is to be treated.
  • the electrical current stimulates the tissue cells to regenerate and improve healing of damaged tissue.
  • the electrical current is generally supplied at low voltages and low currents (e.g. less than 1 Volt and less than 1 microamp).
  • the control circuit 5 includes a switch or other means for initiating its activation and an LED to indicate that it is supply electrical current to one or more of the electrodes. It will be appreciated that there could be any number of electrodes, more than two electrodes or one electrode which supplies current through the tissue to ground.
  • An insulator 9 is provided which is shaped and dimensioned to extend over the conductor 8 and adhere to the first adhesive surface 3.
  • the insulator may be any type of electrically insulating material and may itself include a subsidiary adhesive surface 10 which is on the opposite surface to the surface which adheres to the substrate 2.
  • the substrate 2 has an aperture 11 which is shaped and dimensioned to conform to conventional dressing sizes, or to be slightly larger than a particular dressing 15 so that the apparatus 1 and dressing 15 can be removed from and affixed to tissue completely independently of each other.
  • the aperture 11 may be any shape that conforms to conventional dressings, e.g. a square, rectangular or circular shape.
  • the area of the aperture 11 may be in the range of 1 cm 2 to any of 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, 20, 25, 30, 40, 50, 60, 70, 80 or 100 cm 2 depending on the size of the area which is to be treated.
  • the substrate forms a border around the aperture and has a width which is the same or wider than the electrodes 6, 7 and control unit 5 which may be 0.5, 1, 1.5, 2, 3, 4, 5, 6, 7, 8, 9, 10 or 20 cm depending on the size of the area which is to be treated.
  • the adhesive surface 2 of the substrate and subsidiary adhesive surface 10 of the insulator 9 may be covered with a removable protective layer (not shown) which can be removed prior to application of the apparatus 1 to tissue.
  • the apparatus 1 to tissue is as follows.
  • the tissue to be treated is exposed and the removable protective layer is removed from the substrate 2.
  • the first adhesive surface 3 of the substrate 2 is then applied to the tissue around the area to be treated so that at least part of the area which is being treated is exposed through the aperture 11.
  • Pressure is applied to the second surface 4 to ensure that the apparatus 1 adheres to tissue.
  • the control unit 5 can then be switched on by operating a pressure switch through the substrate layer. Alternatively, the control unit 5 may switch on automatically by detecting the tissue temperature or by detecting a current pathway through the tissue between the electrodes 6 and 7.
  • a dressing 15 such as a conventional wound dressing or other type of dressing may be inserted against the tissue through the aperture 11 and held in place by its own adhesive or other means, such as a bandage or surgical tape. This means that both the dressing 15 and apparatus 1 can be removed from the tissue completely independently of each other.
  • Figure 4 shows the arrangement when the dressing 15 and apparatus 1 have been applied to tissue 18.
  • the dressing could be applied to the tissue before applying the apparatus, or vice-a-versa.
  • the first electrode 6 may be fixed directly to the first adhesive surface 3 separately from the control unit 5 and connected to the control unit 5 via a conductor in a similar way to the second electrode 7.
  • the control unit 5 may be disposed on the second surface 4 (which may also comprise an adhesive) and the electrical connections to the electrodes 6 and 7 may reside substantially on the second surface 4 and connect to the electrodes at their surfaces which are in contact with the first adhesive surface 3 through the substrate 2.
  • the second surface 4 comprises an adhesive to which a dressing 15a which is larger than the aperture 11 could be applied and thus held in place on the tissue, hi this embodiment, the dressing 15a protrudes through the aperture 11.
  • the apparatus 1 cannot be removed without removing the dressing 15a, but the dressing 15a could still be replaced independently form the apparatus 1 by pealing it away from the second surface 4.
  • This arrangement also provides an effective way of manufacturing an integrated dressing comprising the apparatus 1 and a conventional pre-manufactured dressing.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biomedical Technology (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Molecular Biology (AREA)
  • Cell Biology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Electrotherapy Devices (AREA)

Abstract

L'invention concerne un dispositif qui produit une stimulation électrique sur un tissu à partir d'une unité de commande et d'au moins une électrode connectée à l'unité de commande. Un élément de fixation retient la ou les électrode(s) contre le tissu et maintient aussi l'unité de commande dans une position fixe par rapport au tissu. L'unité de commande est conçue pour alimenter en courant électrique la ou les électrodes afin de stimuler le tissu.
PCT/GB2008/003761 2007-11-07 2008-11-07 Dispositif de stimulation électrique d'un tissu et procédé de fabrication de ce dispositif Ceased WO2009060211A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0721857.1 2007-11-07
GB0721857A GB2454481A (en) 2007-11-07 2007-11-07 Dressing with integrated electrodes and control unit

Publications (1)

Publication Number Publication Date
WO2009060211A1 true WO2009060211A1 (fr) 2009-05-14

Family

ID=38858302

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2008/003761 Ceased WO2009060211A1 (fr) 2007-11-07 2008-11-07 Dispositif de stimulation électrique d'un tissu et procédé de fabrication de ce dispositif

Country Status (2)

Country Link
GB (1) GB2454481A (fr)
WO (1) WO2009060211A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021224478A1 (fr) 2020-05-07 2021-11-11 Vanquish Innovation Aps Dispositif de soin des plaies
WO2021224480A1 (fr) 2020-05-07 2021-11-11 Vanquish Innovation Aps Dispositif pour électrothérapie de plaies

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201001631D0 (en) 2010-02-01 2010-03-17 Eumedic Ltd Treatment patch electrode for applying electrical impulses to the body of a patient
GB201211685D0 (en) 2012-07-02 2012-08-15 Sky Medical Technology Ltd A device for augmenting blood flow, tissue perfusion and fluid distribution by neuromuscular stimulation by horses

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2406519A (en) * 2003-09-30 2005-04-06 David John Chapman-Jones Dressing having electrodes and conductive gel for electrical treatment of damaged tissue
WO2007071642A1 (fr) * 2005-12-23 2007-06-28 Lorenz Biotech S.P.A. Support de pansement

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4982742A (en) * 1989-02-22 1991-01-08 C&Y Technology, Inc. Apparatus and method to facilitate healing of soft tissue wounds
FR2766376B1 (fr) * 1997-07-25 1999-10-22 Lhd Lab Hygiene Dietetique Dispositif de traitement therapeutique de plaies
KR100245835B1 (ko) * 1998-02-10 2000-06-01 이양희 습포제
US20020019652A1 (en) * 1999-07-08 2002-02-14 Cyclotec Advanced Medical Technologies Two part tens bandage
US6631294B2 (en) * 2001-06-01 2003-10-07 Biofisica, Llc Apparatus and methods for facilitating wound healing
GB2422549A (en) * 2005-02-01 2006-08-02 Wound Solutions Ltd Flexible electrodes comprising a honey-comb mesh and integrated wound stimulation treatment devices

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2406519A (en) * 2003-09-30 2005-04-06 David John Chapman-Jones Dressing having electrodes and conductive gel for electrical treatment of damaged tissue
WO2007071642A1 (fr) * 2005-12-23 2007-06-28 Lorenz Biotech S.P.A. Support de pansement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021224478A1 (fr) 2020-05-07 2021-11-11 Vanquish Innovation Aps Dispositif de soin des plaies
WO2021224480A1 (fr) 2020-05-07 2021-11-11 Vanquish Innovation Aps Dispositif pour électrothérapie de plaies

Also Published As

Publication number Publication date
GB0721857D0 (en) 2007-12-19
GB2454481A (en) 2009-05-13

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