US2622601A - Electric nerve stimulator - Google Patents

Electric nerve stimulator Download PDF

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US2622601A
US2622601A US5689048A US2622601A US 2622601 A US2622601 A US 2622601A US 5689048 A US5689048 A US 5689048A US 2622601 A US2622601 A US 2622601A
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frequency
current
electrodes
circuits
stimulating
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Nemec Hans
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Nemec Hans
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00Electrotherapy; Circuits therefor
    • A61N1/18Applying electric currents by contact electrodes
    • A61N1/32Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/323Interference currents, i.e. treatment by several currents summed in the body
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00Electrotherapy; Circuits therefor
    • A61N1/18Applying electric currents by contact electrodes

Description

Dec. 23, 1952 H. NEMEC ELECTRIC NERVE STIMULATOR Fi led Oct. 27, 1948 Patented Dec. 23, 1952 UNITED STATES PATENT ELECTRIC NERVE STIMULATOR Hans Nemec, Vorarlberg, Austria Application October 27, 1948, Serial No. 56,890 In Austria December 8, 1947 6 Claims.

This invention relates to electro-medicinal apparatus. The area of the electrodes of such apparatus, which lead the e ectric current to the tissue of the object treated, are small in comparison to the dimensions of the object treated, and as a consequence the greatest current con-- centration and thus the greatest stimulating effect are resulting next to the electrodes. Thereby an upper limit is set to the intensity of current applicable, said limit lying in many cases below the dosage desirable for medicinal reasons. Small children or oversensitive individuals frequently feel unbearable already the mere electrifying action at the places of the skin next to the electrodes, even if it lies very far still below the limit of endurance, so that an electro-therapeutic treatment, even if it were accommodated as much as possible, is impracticable. For the same reason also the utilization of the electric stimulating current for cosmetic purposes could not be carried through despite the fact that the effective possibilities upon the function of the skin, the blood circulation, the facial muscular system and the skin of the face anatomically connected thereto, etc., are in principle extraordinarily superior to all the other processes.

The present invention represents a successive further development of the electro-medicinal apparatus as described in my copending application Ser. No. 56,889 according to which the currents received from separate sources and supplied by means of separate electrodes are united within the tissue to a predetermined, resulting current field, and has for its object to eliminate any disturbing stimulating effect of the current upon the parts of the skin situated below the electrodes. This invention essentially consists in that the single currents have a frequency, each, lying above the normal stimulating frequency suitable for a permanent excitation, said frequencies being distinguished by a figure of frequency lying within the normal region of frequency suitable for a permanent excitation, so that a resulting current field is brought about inside .the object treated, which releases permanent excitations in the rhythm of the difference of the individual frequencies (beat frequency). These excitations consist of pulsating vibrations of the nerves caused directly by electric current at a certain depth of the body, said vibrations resulting for example as to the motor nerves in contractions of the muscles belonging to them. The beat frequency may be varied by hand or automatically. Preferably, the internal resistance of the separate sources of current is great in comparison to the resistance of the circuits of the electrodes (circuits of treatment).

For a better comprehension of the progress attained by this invention in general, and of the following embodiment by way of example in par ticular, a few electro-physiological facts will be stated.

As is known, the stimulating effect of the electric current is dependent on the form of the individual impulses, the frequency of the succession of the same, as well as on the intensity of the same. Furthermore, the phenomenon known in the entire physiology of the senses may be mentioned, according to which there results an accommodation or habituation to the irritation, and this in fact the faster and the more completely, the more equal said irritation is with regard to its temporal course. This explains that a series of electric impulses with a constant intensity are registered by the sensitive nerves of the skin the less the larger the duration of the action is. Thus, keeping a series of impulses of a constant level is an important means for decreasing the sensitive stimulating effect of said impulses. This fact alone, however, becomes useless, if the electric current is not intended to be used for the purpose of an anaesthesia of the sensitive zones, but is to serve primarily for other therapeutic or cosmetic purposes, such as e. g. in electro-gymnastics, where, as is known, the point is to release rhythmic contractions of the muscles. Here a series of impulses of a constant intensity exciting the motor nerves, too, would bring about a permanent contraction exhausting and injuring the muscle For this reason in connection with this field of the electric low frequency therapy up till now the most important there are always used so-called faradic swelling currents, i. e. electric stimulating impulses, the intensity of which is rhythmically increasing and decreasing. From the fact that with the hitherto known apparatus said variations of intensity always appear at the electrodes, too, and thus still further raise the irritation of the skin, which has been increased at the electrodes already in consequence of the great concentration of current, there results the above mentioned restriction, or exclusion of a use of current for therapeutic and cosmetic purposes.

The dependence of the irritations released in the marrow containing fibres of the animal nervous system on the frequency of said irritations is shown by a steady falling off of the stimulating effect with an increasing frequency in consequence of arresting and fatigue phenomena in the refractory period with frequenices of about cycles, until, in the end, with a few thousand cycles, no permanent irritation at all ue any more, but, observed at the nerve of the muscle, the so-called switching-in convulsions arise at the beginning of a fast growmg series of impulses only. Said convulsions ebb down fast, whereupon the muscle remains unexcited despite the fact that the electric current is continuing to flow through the muscle. With a slow, a so-called creeping in increase of the intensity of the current even these stimulating effects would not ensue. Accordingly, there may also be avoided any stimulating phenomenon with the sensitive nerves of the skin, if the series of impulses amounting to a few thousand cycles is being switched on slowly enough.

The technical measures provided according to the invention for utilizing the principles set forth in my copending application Ser. No. 56,889 and at the same time for exploiting the above recognitions in order to provide an apparatus for electro-medicinal, or electro-cosmetic purposes, the currents of which release irritations within the tissue, but are simultaneously without any stimulating quality at the current supplying places of the electrodes, are illustrated, by way of example, in the drawing showing the circuit connections of an apparatus according to this invention.

By means of the net transformer I two separate circuits are supplied, which comprise rectifiers 2 and 5, oscillators 3 and 6, and amplifiers 4 and 7, respectively, said circuits supplying sinusoidal alternating current t the treated object I2 through one pair of electrodes 8, 9, and I0, II, respectively, belonging separately to each circuit. For regulating the intensity of the stimulating current serves a finely stepped double potentiometer 13, which enables a creeping in increase of intensity. Both circuits being symmetric with regard to principle and structure are distinguished by the rotating plate condenser I4 lying parallel to the oscillatory circuit of the oscillator 6. In the turned out position of said condenser the oscillators 3 and 6 are swinging at an equal frequency of 3000 cycles, which may for the oscillator 6 be continually set, or varied, between 3000 and 3100 cycles with the aid of the condensers l4 without altering thereby the oscillatory power delivered. In order to exclude influencing phenomena in the region of small differences of frequency, both oscillatory circuits 3 and 6, respectively, are sufficiently screened. In the same way, by the use of an internal resistance relatively great with regard to the loading resistance in the circuit of the electrodes, there is avoided that the principally important separation of both circuits be to an inadmissibly great extent diminished by a coupling through the object treated.

With a use of said apparatus, by way of example, for an electro-gymnastic treatment the electrodes illustrated are applied in such a manner that the motor point of irritation comes to lie in the centre of the arrangement of the electrodes, and the intensity of the partial or component currents of equal frequency supplied by both circuits is so slowly increased in a creeping in manner that neither a sensitive, nor a motor stimulating effect of the current is brought about. If the frequency of the oscillator 6 is then varied by means of the condenser I 4, beats of the resulting current field are produced in the depth of the tissue between the electrodes, where the motor nerve to be treated is situated, which irritate the innervated muscle according to the beat frequency to cause individual convulsions, clonic or tetanic contractions, whereas the sensitive main nerves remain unexcited.

While the invention has ben shown in the particular embodiment described it is not limited thereto, as modifications thereof may be made without departing from the scope of the appended claims.

I claim:

1. Electro-medicinal apparatus, comprising two separate generators for producing alternating currents of a frequency between 1000 and 10,000 cycles, but differing as to their frequency by an amount of about 1-100 cycles, pairs of electrodes connected, each, with one of said generators and with the object treated, respectively, for supplying interacting currents producing a maximum permanent stimulating effect upon a nerve of a muscle.

2. Electro-therapy apparatus, comp-rising at least two means for producing alternating currents of frequencies between 1000 and 10,000 cycles at the most and practically without a permanent stimulating effect for stimulating the nerves of muscles, a rectifier and a variable resistance in each of said means, a separate electric circuit being connected with each of said means, separate pairs of electrodes for each of said circuits, each of said means being connected with a separate pair of said electrodes, in at least one of said means a condenser and a device, both for regulating the frequency of at least one of said currents to produce, as a modulating frequency, a difference of frequency between the frequencies of said currents of 100 cycles at the most in the range where the currents are superimposing one another.

3. Electro-therapy apparatus as claimed in claim 2, wherein internal resistances are provided in said circuits, said resistances being greater than the resistances of the circuits of treatment between said connected electrodes.

e. Electro-therapy apparatus as claimed in claim 2, comprising an oscillator and an amplifier in each of said means for producing sine wave alternating currents.

5. Electro-therapy apparatus as claimed in claim 4, comprising a variable condenser for producing said modulating frequency, said condenser being in parallel to the oscillatory circuit of the oscillator.

6. Electro-therapy apparatus, comprising a supply transformer, two separate circuits, each connected with said transformer, an oscillator and an amplifier for producing sine wave alternating currents of substantially equal frequency being arranged in each of said circuits, a condenser in one of said circuits being adapted to vary the frequency of this circuit for producing a beat frequency of the order of from 1 to 100 cycles per second by superposing the frequencies of both circuits, internal resistances greater than the resistances of the circuits of treatment being provided in said circuits.

HANS NEMEC.

REFERENCES CITED The following references are of record in the file of this patent:

FOREIGN PATENTS

US2622601A 1947-12-08 1948-10-27 Electric nerve stimulator Expired - Lifetime US2622601A (en)

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AT81247X 1947-12-08
AT163979T 1947-12-08

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FR (2) FR975674A (en)
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Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3077884A (en) * 1957-06-13 1963-02-19 Batrow Lab Inc Electro-physiotherapy apparatus
US3096768A (en) * 1960-05-27 1963-07-09 Tron Inc Fa Electrotherapy system
US3626926A (en) * 1968-04-08 1971-12-14 Mikhail Ilich Kuzin Apparatus for controlled inhibition of the central nervous system in man or animal, mostly for electronarcosis
US3762396A (en) * 1970-10-30 1973-10-02 United Biscuits Ltd Method and apparatus for inducing sleep by applying electrical pulses to plural portions of the head
US3794022A (en) * 1972-06-30 1974-02-26 E Nawracaj Dual oscillator, variable pulse duration electrotherapeutic device
US3801865A (en) * 1971-11-18 1974-04-02 Victor Products Ltd System for supplying electric power to loads in hazardous atmospheres
US3895639A (en) * 1971-09-07 1975-07-22 Rodler Ing Hans Apparatus for producing an interference signal at a selected location
DE2545675A1 (en) * 1974-10-18 1976-04-29 Hans Ing Dr Nemec Electro medical apparatus
US4071033A (en) * 1976-12-20 1978-01-31 Nawracaj Edward P Electrotherapeutic device with modulated dual signals
US4121594A (en) * 1977-09-26 1978-10-24 Med General, Inc. Transcutaneous electrical nerve stimulator
US4153061A (en) * 1976-10-21 1979-05-08 Hans Nemec Electrotherapeutic apparatus
US4841973A (en) * 1987-09-21 1989-06-27 Stecker Harold D Electrical stimulators
US5123413A (en) * 1987-05-27 1992-06-23 Teijin Limited Electric therapeutic apparatus
US5324317A (en) * 1992-09-30 1994-06-28 Medserve Group, Inc. Interferential stimulator for applying low frequency alternating current to the body
US5476481A (en) * 1991-11-15 1995-12-19 Robert Ley Electrotherapy apparatus with superimposed AC fields
US6101418A (en) * 1997-07-24 2000-08-08 Indiba, S.A. Devices for electrotherapy
WO2001051122A1 (en) 2000-01-07 2001-07-19 Biowave Corporation Electro therapy method and apparatus
US20030208248A1 (en) * 2000-01-07 2003-11-06 John Carter Percutaneous electrode array
US20030216794A1 (en) * 2002-03-22 2003-11-20 Hans Becker Therapeutic electrolysis device
US6662051B1 (en) 2000-03-31 2003-12-09 Stephen A. Eraker Programmable pain reduction device
EP1424096A1 (en) * 2002-11-29 2004-06-02 Jung-Soon Cho Human-body potential controlling electrotherapeutic device
EP1530983A2 (en) 2003-11-13 2005-05-18 Zoll Medical Corporation Multi-path transthoracic defibrillation and cardioversion
US20050107833A1 (en) * 2003-11-13 2005-05-19 Freeman Gary A. Multi-path transthoracic defibrillation and cardioversion
US20060149337A1 (en) * 2005-01-21 2006-07-06 John Michael S Systems and methods for tissue stimulation in medical treatment
US20070055323A1 (en) * 2005-09-06 2007-03-08 Massachusetts Eye & Ear Infirmary Calibration of Cochlear Implant Dynamic Range
US20080033492A1 (en) * 2000-01-07 2008-02-07 Biowave Corporation Electro-therapy method
WO2008142402A1 (en) 2007-05-22 2008-11-27 Ivor Stephen Gillbe Array stimulator
US20090093856A1 (en) * 2007-10-05 2009-04-09 Mady Attila High fidelity electronic tactile sensor and stimulator array, including sexual stimulus
US20100191307A1 (en) * 2009-01-29 2010-07-29 Zi-Ping Fang Systems and methods for producing asynchronous neural responses to treat pain and/or other patient conditions
US20110054572A1 (en) * 2009-07-29 2011-03-03 A Major Difference, Inc. Therapeutic electrolysis device with replaceable ionizer unit
US8170675B2 (en) 2009-04-22 2012-05-01 Nevro Corporation Selective high frequency spinal cord modulation for inhibiting pain with reduced side effects, and associated systems and methods
US8428735B2 (en) 2004-05-24 2013-04-23 Bioinduction Limited Electrotherapy apparatus
US8649874B2 (en) 2010-11-30 2014-02-11 Nevro Corporation Extended pain relief via high frequency spinal cord modulation, and associated systems and methods
US8676331B2 (en) 2012-04-02 2014-03-18 Nevro Corporation Devices for controlling spinal cord modulation for inhibiting pain, and associated systems and methods, including controllers for automated parameter selection
US8768472B2 (en) 2007-11-05 2014-07-01 Nevro Corporation Multi-frequency neural treatments and associated systems and methods
US8798754B2 (en) 2005-09-26 2014-08-05 Venturi Group, Llc Neural blocking therapy
US9278215B2 (en) 2011-09-08 2016-03-08 Nevro Corporation Selective high frequency spinal cord modulation for inhibiting pain, including cephalic and/or total body pain with reduced side effects, and associated systems and methods
US9409019B2 (en) 2009-07-28 2016-08-09 Nevro Corporation Linked area parameter adjustment for spinal cord stimulation and associated systems and methods
US9833614B1 (en) 2012-06-22 2017-12-05 Nevro Corp. Autonomic nervous system control via high frequency spinal cord modulation, and associated systems and methods
US9895539B1 (en) 2013-06-10 2018-02-20 Nevro Corp. Methods and systems for disease treatment using electrical stimulation

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2493154A1 (en) * 1980-11-05 1982-05-07 Berthelin Francis Electrical respiratory stimulator - has two pairs of electrodes, placed at level of muscles of patient, supplied with AC of slightly varying frequencies
JPS6249580B2 (en) * 1983-06-10 1987-10-20 Isaji Kurose
US4580569A (en) * 1983-12-15 1986-04-08 Wright State University Apparatus and method for muscle stimulation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR809469A (en) * 1935-11-25 1937-03-03 Boilot Ets Improvements to cable carriers
FR859618A (en) * 1939-05-17 1940-12-23 A process for producing low-frequency currents in the deep tissue
FR862014A (en) * 1939-08-16 1941-02-25 Fashion and electromedical treatment device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR809469A (en) * 1935-11-25 1937-03-03 Boilot Ets Improvements to cable carriers
FR859618A (en) * 1939-05-17 1940-12-23 A process for producing low-frequency currents in the deep tissue
FR862014A (en) * 1939-08-16 1941-02-25 Fashion and electromedical treatment device

Cited By (104)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3077884A (en) * 1957-06-13 1963-02-19 Batrow Lab Inc Electro-physiotherapy apparatus
US3096768A (en) * 1960-05-27 1963-07-09 Tron Inc Fa Electrotherapy system
US3626926A (en) * 1968-04-08 1971-12-14 Mikhail Ilich Kuzin Apparatus for controlled inhibition of the central nervous system in man or animal, mostly for electronarcosis
US3762396A (en) * 1970-10-30 1973-10-02 United Biscuits Ltd Method and apparatus for inducing sleep by applying electrical pulses to plural portions of the head
US3895639A (en) * 1971-09-07 1975-07-22 Rodler Ing Hans Apparatus for producing an interference signal at a selected location
US3801865A (en) * 1971-11-18 1974-04-02 Victor Products Ltd System for supplying electric power to loads in hazardous atmospheres
US3794022A (en) * 1972-06-30 1974-02-26 E Nawracaj Dual oscillator, variable pulse duration electrotherapeutic device
DE2545675A1 (en) * 1974-10-18 1976-04-29 Hans Ing Dr Nemec Electro medical apparatus
US4023574A (en) * 1974-10-18 1977-05-17 Hans Nemec Electrostimulation method and apparatus
US4153061A (en) * 1976-10-21 1979-05-08 Hans Nemec Electrotherapeutic apparatus
US4071033A (en) * 1976-12-20 1978-01-31 Nawracaj Edward P Electrotherapeutic device with modulated dual signals
US4121594A (en) * 1977-09-26 1978-10-24 Med General, Inc. Transcutaneous electrical nerve stimulator
US5123413A (en) * 1987-05-27 1992-06-23 Teijin Limited Electric therapeutic apparatus
US4841973A (en) * 1987-09-21 1989-06-27 Stecker Harold D Electrical stimulators
US5476481A (en) * 1991-11-15 1995-12-19 Robert Ley Electrotherapy apparatus with superimposed AC fields
US5324317A (en) * 1992-09-30 1994-06-28 Medserve Group, Inc. Interferential stimulator for applying low frequency alternating current to the body
US6101418A (en) * 1997-07-24 2000-08-08 Indiba, S.A. Devices for electrotherapy
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US6584358B2 (en) 2000-01-07 2003-06-24 Biowave Corporation Electro therapy method and apparatus
US20030208248A1 (en) * 2000-01-07 2003-11-06 John Carter Percutaneous electrode array
US20080033492A1 (en) * 2000-01-07 2008-02-07 Biowave Corporation Electro-therapy method
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US6792315B2 (en) 2000-01-07 2004-09-14 Biowave Corporation Electro therapy method and apparatus
US20050043775A1 (en) * 2000-01-07 2005-02-24 Carter John Percutaneous electrode array
US6853863B2 (en) 2000-01-07 2005-02-08 Biowave Corporation Electro therapy method and apparatus
US6662051B1 (en) 2000-03-31 2003-12-09 Stephen A. Eraker Programmable pain reduction device
US7160434B2 (en) 2002-03-22 2007-01-09 Robert E. Moroney, Llc Therapeutic electrolysis device
US20070089981A1 (en) * 2002-03-22 2007-04-26 Robert E. Moroney, Llc Therapeutic electrolysis device
US20030216794A1 (en) * 2002-03-22 2003-11-20 Hans Becker Therapeutic electrolysis device
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US20050107833A1 (en) * 2003-11-13 2005-05-19 Freeman Gary A. Multi-path transthoracic defibrillation and cardioversion
US9174061B2 (en) 2003-11-13 2015-11-03 Zoll Medical Corporation Multi-path transthoracic defibrillation and cardioversion
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US20050107834A1 (en) * 2003-11-13 2005-05-19 Freeman Gary A. Multi-path transthoracic defibrillation and cardioversion
US8428735B2 (en) 2004-05-24 2013-04-23 Bioinduction Limited Electrotherapy apparatus
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