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GB1311519A - Apparatus and method for aiding formation of bone forming material - Google Patents

Apparatus and method for aiding formation of bone forming material

Info

Publication number
GB1311519A
GB1311519A GB1676070A GB1676070A GB1311519A GB 1311519 A GB1311519 A GB 1311519A GB 1676070 A GB1676070 A GB 1676070A GB 1676070 A GB1676070 A GB 1676070A GB 1311519 A GB1311519 A GB 1311519A
Authority
GB
United Kingdom
Prior art keywords
coil
bone
frequency
plate
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.)
Expired
Application number
GB1676070A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1311519A publication Critical patent/GB1311519A/en
Expired 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
    • A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/372—Arrangements in connection with the implantation of stimulators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • 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
    • A61N1/372—Arrangements in connection with the implantation of stimulators
    • A61N1/378—Electrical supply
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/40—Applying electric fields by inductive or capacitive coupling ; Applying radio-frequency signals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N2/00—Magnetotherapy
    • A61N2/02—Magnetotherapy using magnetic fields produced by coils, including single turn loops or electromagnets

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Radiology & Medical Imaging (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Magnetic Treatment Devices (AREA)
  • Electrotherapy Devices (AREA)
  • Surgical Instruments (AREA)
  • Materials For Medical Uses (AREA)

Abstract

1311519 Apparatus for stimulating bone growth W KRAUS 8 April 1970 [10 April 1969] 16760/70 Heading A5R Apparatus for the promotion of bone growth comprises at least one pick-up coil 22, 24 or 26 adapted to be implanted in a living body adjacent a bone structure 10, at least one slender electrode electrically connected to, or constituted by a first terminal of the coil and adapted to be inserted into the bone structure, a second electrode connected to a second terminal of the coil and adapted to be positioned in or alongside the bone structure and spaced from the first electrode, and means 42 for inducing in the coil an A.C. current having a frequency below 1000 H2, a low harmonic content, and a magnitude giving a current density of no more than 10 microamperes per square millimetre at the electrodes. In one form, two splint plates 16, 18 of non-magnetic metal are screwed to a fractured bone 10, the plate 10 carrying coils 22, 24, 26 on a magnetic core 20 with one terminal of each coil 22 and 26 connected to plate 16 and the others connected by insulated wires to electrodes 32, 40 in gaps 12, 14 between bone parts. Coil 24 is connected to a metal screw 36 insulated from plate 16 and to an electrode in the bone through a hollow screw 34. A coil 42, external to the body, is connected to an A.C. generator 44 to induce currents of preferably 10 to 30H2 and of current density at the electrodes of preferably 3 to 7 microamperes per square millimeter. The induced current is preferably sinusoidal with a harmonic content of less than 10%. The output of generator 44 may be an A.C. signal at a first frequency with a superimposed modulating signal at a frequency at least three times the first frequency. In alternative embodiments, Figures 2-5 (not shown), a single splint plate may be used with a coil attached thereto or wound in a peripheral groove thereon. A capacitor may be connected in parallel with one coil to form a tuned resonant circuit.
GB1676070A 1969-04-10 1970-04-08 Apparatus and method for aiding formation of bone forming material Expired GB1311519A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691918299 DE1918299B2 (en) 1969-04-10 1969-04-10 Splint for guiding and healing fractured bones

Publications (1)

Publication Number Publication Date
GB1311519A true GB1311519A (en) 1973-03-28

Family

ID=5730828

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1676070A Expired GB1311519A (en) 1969-04-10 1970-04-08 Apparatus and method for aiding formation of bone forming material

Country Status (7)

Country Link
US (2) US3745995A (en)
JP (1) JPS5037945B1 (en)
AT (1) AT306223B (en)
CH (1) CH515041A (en)
DE (1) DE1918299B2 (en)
GB (1) GB1311519A (en)
SE (1) SE362791B (en)

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DE2215111C3 (en) * 1972-03-28 1981-10-08 Kraus, Werner, Dipl.-Ing., 8000 München Implantable device for stimulating bone growth
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Also Published As

Publication number Publication date
JPS5037945B1 (en) 1975-12-05
SE362791B (en) 1973-12-27
CH515041A (en) 1971-11-15
DE1918299B2 (en) 1972-04-13
US3745995A (en) 1973-07-17
US3783880A (en) 1974-01-08
AT306223B (en) 1973-03-26
DE1918299A1 (en) 1970-10-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years