US1666697A - Diathermic apparatus - Google Patents

Diathermic apparatus Download PDF

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Publication number
US1666697A
US1666697A US224569A US22456927A US1666697A US 1666697 A US1666697 A US 1666697A US 224569 A US224569 A US 224569A US 22456927 A US22456927 A US 22456927A US 1666697 A US1666697 A US 1666697A
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casing
diathermic
electrodes
resistances
perforations
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US224569A
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Grossmann Gustav
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    • 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
    • A61N1/06—Electrodes for high-frequency therapy

Definitions

  • This invention relates to improvements in apparatus employed for diathermic treatments, and has particular reference to electrode heating means therefor.
  • this heating is efi'ected-b'yuneans of ballast resistances or ballast lamps that ar built into" the'diathermic apparatus and which are employed, as is well known, for'the protection of the oscillatory circuits, and particularly '15 of the spark gap, from injuriousheating in case of only a slight employment of the energy or a total non-use thereof.
  • the resistances are built-in in the vicinity of one part at the wall of the ap- 20 paratus.
  • tunnel "or a pipe, on the walls of which the ballast resistances are ar 1 ranged, may be provided in the casing, or, more simply, a certain portion of the cover 26 of the casing which is suitable for the 'placing of the electrodes thereon may .be used for heating the latter.
  • ballast resistances w are built in, asis shown on the one side where the cover is partly broken away for purposes of illus- 4o tration.
  • These ballast resistances may consist of insulating plates which are wound with a ribbon or wire of resistance metal.
  • the treatment electrbde's to be heated are laid upon the. perforated portions of the cover.
  • the air that is heated by the ballast resistances then rises through the perforations from the interior of the casing and heats the electrodes.
  • I ii 1. In a. diathermic apparatus, a casing, and ballast resistances in said casing for the protection of the oscillatory circuit of the" apparatus arranged in the vicinity of one wall of said casing in such manner that the electrodes of the apparatus which are placed in said vicinity are heated by said resist- 2.
  • Apparatus in accordance with claim 1 characterized by said wall being provided -with perforations through which the heat passes to said electrodes.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Description

April 17, 1928'.
G GROSSMANN DI'ATHERMIC APPARATUS Filed Oct. 7. 1927 flat X7 TraeMa-rs Patented Apr. 17; 1928.
UNITED STATES GUSTAV GBOSSMANN, OF BERLIN, GERMANY.
DIATHERMIC APPARATUS.
Application filed October 7, 1927, Serial no. 224,569, and in Germany November 23, 19 26.
This invention relates to improvements in apparatus employed for diathermic treatments, and has particular reference to electrode heating means therefor.
It is desirable to heat the electrodes that are to be used for diathermic treatments before they are laid upon the body of the patient.
i In accordance with the present invention this heating is efi'ected-b'yuneans of ballast resistances or ballast lamps that ar built into" the'diathermic apparatus and which are employed, as is well known, for'the protection of the oscillatory circuits, and particularly '15 of the spark gap, from injuriousheating in case of only a slight employment of the energy or a total non-use thereof. For this purpose the resistances are built-in in the vicinity of one part at the wall of the ap- 20 paratus. For the purpose of receiving the electrodes a niche, tunnel "or a pipe, on the walls of which the ballast resistances are ar 1 ranged, may be provided in the casing, or, more simply, a certain portion of the cover 26 of the casing which is suitable for the 'placing of the electrodes thereon may .be used for heating the latter.
One form of the invention is represented in the drawing, wherein the figure is a perspective view of the apparatus. I
All parts of the diathermic apparatus, with the exception of the measuring device and the connection terminals, arehoused in the box-like casing is, The cover of this casing is provided with perforations d at two 1 passes to. said electrodes places,-that is, on opposite sides of the measuring device m. Directly below these perforations, the ballast resistances w are built in, asis shown on the one side where the cover is partly broken away for purposes of illus- 4o tration. These ballast resistances may consist of insulating plates which are wound with a ribbon or wire of resistance metal.
The treatment electrbde's to be heated are laid upon the. perforated portions of the cover. The air that is heated by the ballast resistances then rises through the perforations from the interior of the casing and heats the electrodes.
What is claimed is: I ii 1. In a. diathermic apparatus, a casing, and ballast resistances in said casing for the protection of the oscillatory circuit of the" apparatus arranged in the vicinity of one wall of said casing in such manner that the electrodes of the apparatus which are placed in said vicinity are heated by said resist- 2. Apparatus in accordance with claim 1 characterized by said wall being provided -with perforations through which the heat passes to said electrodes.
3. Apparatus in accordance with claim 1, characterized by said wall" being provided with perforations through wlficlrthe heat and said resistances being built inthe casing directly beneath the cover thereof.
Y GUSTA GROSSMANN,
US224569A 1926-11-23 1927-10-07 Diathermic apparatus Expired - Lifetime US1666697A (en)

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DE1666697X 1926-11-23

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