US2073201A

US2073201A - Method of diathermic treatment by means of high frequency

Info

Publication number: US2073201A
Application number: US676195A
Authority: US
Inventors: Esau Abraham
Original assignee: Individual
Current assignee: Individual
Priority date: 1928-01-21
Filing date: 1933-06-16
Publication date: 1937-03-09
Anticipated expiration: 1954-03-09
Also published as: GB327577A; FR666264A

Description

March 9, 1937. ESAU 2,073,201

METHOD OF DIATHERMIC TREATMENT BY MEANS OF HIGH FREQUENCY Filed June 16, 1933 Patented Mar. 9, 1937 UNITED STATES METHOD OF DIATHERMIC TREATMENT BY MEANS OF HIGH FREQUENCY Abraham Esau, Jena, Germany Application June 16, 1933, Serial No. 676,195 In Germany January 21, 1928 11 Claims.

This invention relates to the treatment of abnormal physical conditions by diathermic waves generated by high frequency electro-magnetic means and has special reference to apparatus for controlling the application of such waves.

As set forth in my prior application for patent filed December 26, 1928 and bearing the Serial Number 328,509, eventuating July 18, 1933, in Patent No. 1,918,386, and of which this application is a continuation in part, I have made an improvement on the prior means employed wherein for diathermic purposes high frequency oscillations were used whose wave length ranged from a few hundred meters up to a few thousand meters and I have, in the aforesaid'application, set forth the manner in which such wave lengths produced injurious effects on the body tissues.

In the present invention, I have provided a further improvement on previous methods wherein a directed beam of high frequency oscillations having wave lengths not exceeding ten meters is used in such diathermic treatment and in this device, as in my prior device, the body un- 2 der treatment is not allowed to function as ohmic resistance.

In the accompanying drawing, there is shown in a semi-diagrammatic manner an apparatus for carrying this invention into execution.

In this drawing, as one means for the production of the desired short waves, a source of electric current is here indicated as a battery I 0. usual filament or cathode I2, grid I3 and plate 35 or anode H. A battery l5 has its terminals connected to the terminals of the filament or cathode by conductors l6 and one terminal of the battery I0 is connected to one of the conductors M3 by a conductor l1. 4 At I8 is a translating device, ,here shown as a dipole, for the production of electro-magnetic field oscillations and one terminal of this device is connected to the remaining terminal of the battery It) by a conductor H! which is also connected to the plate or anode l4 by a conductor 20. The remaining terminal of the device I8 is connected by a conductor 2| with the grid l3 and this grid is also connected to the remaining conductor I6, and thus to the cathode or filament l2, by a conductor 22. A choking coil 23 is interposed in the conductor 22.

At 24 is a wave reflector of a type suitable for At II is a three element valve having the The arrangement is such that owing to the back coupling of the tube between the oscillating circuit through the device l8 and the grid circuit proper, undamped electrical oscillations are maintained through the device l8 whose period of natural vibration is not greater than that required for ultra-short waves of not more than ten meters length on account of the small internal capacities of the tube. Obviously, instead of the diagram shown, any other known arrangement for the generation of short waves of the length desired may be used.

Heretofore it has been the practice in carrying out diathermic treatments by means of. high frequency to either place treatment electrodes in direct contact with the body part to be treated, with liability of injury to the patient, or to dispose the body part between and in spaced relation to the treatment electrodes. The latter method overcomes the objections to the direct contact method, but this latter method is sometimes also found objectionable, especially in the case of lengthy treatments as set forth in my aforesaid Patent No. 1,918,386, because of the liability of causing injurious effects upon operjustment of the body part treated or itself be found diflicult of adjustment to proper position. The presentinvention, however, allows the use of such a shield to be dispensed with and the body part of the patient to be properly disposed in the path of the wave beam and treated without inconvenience to the patient or operator or liability of injury to operator or attendant from exposure to the rays, since by the use of the reflector the rays are concentrated to the desired degree and projected in the form of a beam directly upon the part to be treated. Also by the use of a translating device having a natural period of vibration for producing an intense wave field of a frequency within a determined range found best suited for a specific character of treatment, maximum efliciency of operation is secured, since the treatment action may be directed and controlled with great precision.

I claim:

1. In a therapeutic apparatus, a dipole, a reflector adjacent said dipole directing the waves from the dipole in a definite direction, a source of current, a conductive connection between one element of said dipole and one side of the source of current, a vacuum tube containing a plate, a

grid and a heater filament, a second conductive connection connecting the remaining member of the dipole and said grid, a third conductive connection connecting the plate with the first conductive connection, a fourth conductive connection between the remaining side of the source of current and the second conductive connection and including a filament battery and resistance in series, and conductive connections from each end of said filament to the fourth conductive connection on opposite sides of said filament battery.

2. Apparatus for diathermic' treatment of a subject disposed in a' trajectory zone of treatment by means of high frequency waves, comprising generating means for generating ultrashort waves suitable for producing internal heat in the subject to be treated, a path for said waves connected to said generating means and including a dipole for producing an intense field at a focal point in sufficiently close proximity to the subject to produce the thermic effect, and means associated with said dipole for directing! the waves as a beam through said zone and directly against the subject.

3. Apparatus for diathermic treatment of a subject disposed in a trajectory zone of treatment by means of high frequency electro-magnetic waves, comprising a short wave generating means for generating electric waves having a length not greater than ten meters, and including a translating device for locally producing an intense wave field in said trajectory zone and means to direct the waves of the field as a beam through the zone directly against the subject to be treated.

4. Apparatus for diathermic treatment of a subject disposed in a trajectory zone of treatment by means of high frequency electro-magnetic waves, comprising a short wave generating means having a natural period of vibration for generating electric waves having a length not greater than ten meters, a path for said waves connected to said generating means and inc1uding a dipole for producing an intense wave field in said trajectory zone at a point spaced from I but located in close proximity to the subject, and means to direct the waves of the field as a beam through the zone directly against the subject to be treated.

5. Apparatus for diathermic treatment of a subject by means of high frequency waves, comprising a translating device arranged and operative to produce an electro-rnagnetic' field in close proximity to the subject to be treated, means connected to said translating device for generating and transmitting therethrough short electric waves of a length suitable for producing internal heat in the proximately disposed subject, and reflecting means associated with said translating device and arranged to reflect the waves from the translating device in a treatment beam directly against the subject.

6. Apparatus for diathermic treatment of a subject by means of high frequency electromagnetic waves, comprising means for generating short electric waves of a length suitable for producing internal heat in a subject to be treated, a path for said waves connected to said means and including a translating device for producing an intense wave field in sufficiently close proximity to the subject to produce the thermic effect, and reflecting means associated with said translating device and arranged to refiect waves from the translating device in a treatment beam directly upon the subject.

7. Apparatus for diathermic treatment of a subject disposed in a trajectory zone of treatment by means of high frequency electro-magnetic waves, comprising means for generating electric waves of a length suitable for producing internal heat in the subject to be treated, a path for said waves connected to said means and including a dipole for producin an intense wave field at a focal point in said zone, and a parabolic reflector for said waves disposed at said focal point and having the dipole located at its focus and operative to reflect the waves through said zone as a beam directly upon the subject.

'8. Apparatus for diathermic treatment of a subject disposed in a trajectory zone of treatment by means of high frequency waves, comprising a short wave generating means having a natural period of vibration for generating ultra-short electric waves of a length suitable for producing internal heat in the subject to be treated, a path for said waves connected to said means and including a translating device for producing an intense wave fleld at a focal point in sufliciently close proximity to the subject to produce the thermic effect, and reflecting means associated with said translating device and arranged to reflect the waves from the translating device through said zone as a beam directly upon the subject.

9. Apparatus for diathermic treatment of a subject disposed in a trajectory zone of treatment by means of high frequency waves, comprising a short wave generating means for generating ultra-short electric waves of a length suitable for producing internal heat in the subject to be treated, a path for said waves connected to said means and including a dipole for producing an intense wave field at a focal point in sufficiently close proximity to the subject to produce the thermic effect, and reflecting means associated with said dipole for reflecting the waves through said zone as a beam directly upon the subject.

10. Apparatus for diathermic treatment of a subject disposed in a trajectory zone of treatment by means of high frequency waves, comprising a short wave generating means for generating ultra-short electric waves of a length suitable for producing internal heat in the subject to be treated, a path for said waves connected to said means and including a dipole for producing an intense wave field at a focal point in sufliciently close proximity to the subject to produce the thermic effect, and a parabolic reflector associated with the dipole for reflecting the waves through said zone as a beam directly upon the subject.

11. Apparatus for diathermic treatment of a subject disposed in a trajectory zone of treat ment by means of high frequency waves, comprising a short wave generating means for generating short waves having a length not greater than ten meters and including a translating device operative to produce an intense electromagnetic field in said trajectory zone, and reflecting means associated with said translating device and arranged to reflect the waves from the translating device in a treatment beam directly against the subject.

ABRAHAM ESAU.