US2242886A - Condenser electrode for short-wave and ultra-short-wave therapy and method for storing the same - Google Patents

Condenser electrode for short-wave and ultra-short-wave therapy and method for storing the same Download PDF

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Publication number
US2242886A
US2242886A US9998A US999835A US2242886A US 2242886 A US2242886 A US 2242886A US 9998 A US9998 A US 9998A US 999835 A US999835 A US 999835A US 2242886 A US2242886 A US 2242886A
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short
electrode
wave
dielectric
condenser
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US9998A
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Hirschland Leo
Schmidt Georg
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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

  • the dielectric-material of electrodes for short-wave and ultra-short-wave therapy has been formed by the application of layers of vulcanized soft rubber which, owing to their elasticity adapt themselves better to the portion of the body to be treated.
  • these electrodes also have many drawbacks. They do not enable the physician to change the capacity as is possible in the case of hood-electrodes with an electrode plate shiftable relatively to the hood and to the portion of the body to be treated, and the necessity of placing them directly on the portion of the body to be treated precludes their use for the treatment of furuncles and carbuncles and marry other ulcerations.
  • the invention solves the problem of producing a condenser electrode which on the one hand can be universally used so thatit is not necessary for the physician to keep a stock of various kinds of condenser electrodes, and which on the other hand overcomes all the objections inherent in the known condenser electrodes.
  • the dielectric material is formed by a body made of easily shapable or mouidable, plastic substance which is so inelastic that after being moulded it retains the shape given to it by the physician.
  • the dielectric material is preferably formed of a substance which becomes plastic when heated and loses its plasticity on cooling. Of such dielectrics paraffin has proved particularly suitable and is also characterized by its low price.
  • Fig. 1 is a front view of a relatively large and Fig. 2 is a front view of a relatively small electrode;
  • Fig. 3 is a longitudinal section of the electrode according to Fig. 1 being adapted for the treatment of furuncles or the like;
  • Fig. 4 is a partly longitudinal section. of an electrode according to Fig. 2 being adapted for the treatment of a furuncle on'the nose of a patient and applied on same;
  • Fig. 5 shows in section an electrode being provided with two different kinds of dielectric material
  • Fig. 6 shows an electrode of the same type, but
  • the electrodes according to Figs. 1 to 4 consist of a metallic, circular disc-shaped, inflexible electrode plate a which carries on one side a lead stem 1) and on the other side a cylindrical parafin block 0.
  • the block 0 is of such thickness that, when in plastic condition, its surface remote from the carrier plate a can be adapted to any portion of the surface of the body to be treated.
  • Condenser electrodes preferably of similar shape, but different size, such as illustrated in Figs. 1 and 2, are preferably stored in a heated cupboard or some other heated container, in which the temperature is so high that the di-- electric retains its plastic condition. The physician is thus enabled to select from the cupboard an electrode of the particular diameter that he may require.
  • the trunk for example, he will select an electrode the dielectric of which is of large enough diameter; and as he does not need a particularly complicated shape, he will merely cut from the block 0 a slice such that the" remaining portion of the block shall have the desired thickness. The physician will then apply this block to the portion of the body to be treated.
  • the electrode being of very light weight, can be at-- tached to the body of the patient solely by adhesive strips and does not require the usual complicated holding means, which are very often undesirable.
  • the electrode prepared for a patient is reserved for the treatment of this patient, so that the former dificulties as regards sterilizing are eliminated.
  • the paraflln block is removed from the carrier plate a and melted. If a furuncle on a relatively smooth surface of the body is to be treated, the
  • Fig. 3 shows in section a paramn block of this shape. If a furuncle on the surface of the nose is to be treated, the physician first moulds the parafiin block, whilst still in plastic condition, in accordance with the shape of the nose and then makes the hollow in it intended for accommodating the furuncle.
  • Fig. 4 shows such a paraflin block in section.
  • electrodes according to the invention can be universally employed but they present particularly great advantages for the treatment of the small cavities of the head, such as the frontal cavity, when exceptionally favorable indications could be noticed.
  • Heating plates provided witha. handle and shaped according to the shape of the electrode plate may be employed for fixing the parafiin block 0.
  • the electrode according to Fig. 5 consists of a layer c of a substance that becomes plastic under heat and that loses its plasticity at room temperature; for example, parafii'n.
  • the paraifin layer 0 is fixed on a layer d which is constituted of a solid dielectric having a higher dielectric constant than the material constituting the layer a.
  • the layer d may, for example, consist of hard rubber or an artificial resin composition consisting of phenol.
  • Condenser electrodes are known, in which the dielectric consists for exampleof a hard rubber body.
  • the electrode illustrated in Fig. 5 presents the advantage that with smaller dimensions the same capacity can be obtained. This fact is of importance because it is desirable to give the electrode as small dimensions as possible in the direction of height,
  • the capacity of the electrode can be increased, without considerably increasing the dimensions, by providing, for ax ample, a thin, hard-rubber disc; because the dielectric constant of hard rubber is about 2.9.
  • the parafiin block is ing. It preferably consists of a film produced 7 by the metal spraying process. 7 Where the matter of light weight is not of im portance, but where it is desirable to be able to products from condensation of vary the capacity, the electrode illustrated in Fig.
  • the surface of the paraflln electrode 0, as before, may be molded according to the shape of the portion of the body to be treated; but a variable condenser is mounted on the block 0, illustrated as comprising a. glass hood under thecover g of which is mounted a metallic. electrode platei to which is secured a bolt 72. that is longitudinally shiftable through a hole in the cover 9.
  • a condenser electrode for short-wave and ultra-short-wave therapy having its dielectric material of parafiin which is easily shapable
  • a condenser electrode for short-wave and ultra-short-wave therapy comprising a dielectric layer and a mass of easily shapable, plastic, and non-elastic dielectric material mounted thereon.
  • a condenser electrode for short-wave and ultra-short-wave therapy comprising a dielectric layer and a mass of easily shapable, plastic, and non-elastic dielectric material mounted thereon, the dielectric layer being constituted of a solid having a higher dielectric constant than the dielectric constant of the' plasticsubstance.
  • a condenser electrode for-short-wave and f ultra-short-wave therapy comprising a dielectric layer, a mass of easily shapable, plastic, and nonelastic dielectric material mounted thereon, the
  • dielectric layer being constituted of a solid having a higher dielectric constant than the dielectric constant of the plastic substance, and a foil-like, metal coating sprayed on the dielectric layer.
  • a condenser electrode for short-wave and ultra-short-wave therapy comprising a dielectric layer, and a second dielectric layer fixed thereto, the layers having difl'erent dielectric constants, and one of the layers being constituted of a manually moldable substance having a free manually moldable surface, and the moldable substance being inelastic so as to retain its molded shape after manual molding.
  • a method of storing condenser electrodes in which the dielectric material consists'of abody of easily shapable plastic, nonelastic substance, comprising storing the electrodes in a. container, and maintaining the temperature of the container sufficiently high to cause the dielectric material to retain its plastic consistency.
  • a condenser electrode for short-wave and ultra-short-wave therapy comprising a relatively inflexible conductive member and a paramn-like dielectric secured thereto, the dielectric being thermoplastic to permit molding and being also inelastic so as to retain its molded shape after molding, the dielectric being thick enough to. permit molding therein negatives of ulcerations of the dimensions of furuncles, carbuncles and the like.
  • a condenser electrode for short-wave an ultra-short-wave therapy comprising a relatively molded shape after manual molding, the moldable substance being thick enough to permit cutting, slices therefrom so as to vary the capacity of the condenser.
  • a condenser-type electrode comprising an insulating layer shaped to conform substantially to the surface of the part of the body to be treated, a metal coating fitted to the surface of said insulating layer opposite to its surface to be applied to the human body, said insulating layer consisting of a material adapted to be moulded at relatively low temperatures to become sufllciently hard at room temperature to retain the shape imparted to it and to be reshaped upon subsequent reheating.
  • a condenser-type electrode for short-wave therapy comprising a dielectric layer shaped to conform substantially to the surface of the part of the human body to be treated, a metal coating fitted to the surface of said dielectric layer opposite to its surface to be applied to the human body, certain parts of said dielectric layer between the metal coating and the surface to be applied to the human body being of different thicknesses, said dielectric layer consisting ofa plastic material adapted to secure the required inflexible conducting support and a wax dielectric secured thereto, the wax dielectric being thick enough to permit molding therein negatives of ulcerations of the dimensions of furuncles, carbuncles and the like.
  • ultra-short-wave therapy comprising a relatively inflexible conducting support and a dielectric secured thereto'and having a free surface, the dicondenser electrode forshort-wave and a distances between said metal coating and the surface of the human body to be treated and'to be manually reshaped due to its plasticity subsequent to prior use.
  • a condenser-type electrode for short-wave therapy of ulcerations comprising a dielectric layer having a recess adapted to receive an ulceration, the part of said layer surrounding said recess being shaped to conform substantially to the surface of the part 01 the body to which the electrode is to be applied, a metal coating fitted to the surface of saldidielectric layer opposite to the recess, said dielectric layer consisting of a plastic material adapted to be moulded manually at relatively low temperatures to become sumciently hard at room temperatures to secure the required distance between said metal coating and the ulceration to be treated and to be manually reshaped due to its plasticity upon subsequent reheating.

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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)
  • Electrotherapy Devices (AREA)
US9998A 1934-03-13 1935-03-08 Condenser electrode for short-wave and ultra-short-wave therapy and method for storing the same Expired - Lifetime US2242886A (en)

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DE431672X 1934-03-13

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US2242886A true US2242886A (en) 1941-05-20

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BE (1) BE419351A (es)
GB (1) GB431672A (es)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2814298A (en) * 1953-11-18 1957-11-26 Raytheon Mfg Co Impedance matching pad for microwave heating and method of use
WO1980001462A1 (en) * 1979-01-11 1980-07-24 Bsd Corp System for irradiating living tissue,or simulation thereof
US4378806A (en) * 1980-08-12 1983-04-05 Henley Cohn Julian L Gapped resonant microwave apparatus for producing hyperthermia therapy of tumors
US4958626A (en) * 1986-04-22 1990-09-25 Nippon Oil Co., Ltd. Method for applying electromagnetic wave and ultrasonic wave therapies

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4197860A (en) * 1977-11-21 1980-04-15 Rca Corporation Hyperthermia applicator
US4311154A (en) * 1979-03-23 1982-01-19 Rca Corporation Nonsymmetrical bulb applicator for hyperthermic treatment of the body
GB8507213D0 (en) * 1985-03-20 1985-04-24 Kiernan K Machine for medical use
DE3623711A1 (de) * 1985-07-12 1987-01-15 Med & Tech Handels Gmbh Vorrichtung zum feststellen von eigenschaften, verschiedenheiten und veraenderungen des menschlichen oder tierischen koerpers
US4640280A (en) * 1985-08-12 1987-02-03 Rca Corporation Microwave hyperthermia with dielectric lens focusing
EP0298441B1 (de) * 1987-07-06 1993-10-27 Handelsgesellschaft Für Medizin Und Technik Mit Beschränkter Haftung Vorrichtung zum Feststellen von Eigenschaften, Verschiedenheiten und Veränderungen des menschlichen oder tierischen Körpers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2814298A (en) * 1953-11-18 1957-11-26 Raytheon Mfg Co Impedance matching pad for microwave heating and method of use
WO1980001462A1 (en) * 1979-01-11 1980-07-24 Bsd Corp System for irradiating living tissue,or simulation thereof
US4341227A (en) * 1979-01-11 1982-07-27 Bsd Corporation System for irradiating living tissue or simulations thereof
US4378806A (en) * 1980-08-12 1983-04-05 Henley Cohn Julian L Gapped resonant microwave apparatus for producing hyperthermia therapy of tumors
US4958626A (en) * 1986-04-22 1990-09-25 Nippon Oil Co., Ltd. Method for applying electromagnetic wave and ultrasonic wave therapies

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BE419351A (es)

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