US3337776A - Biomedical apparatus for generating controllable magnetic fields - Google Patents

Biomedical apparatus for generating controllable magnetic fields Download PDF

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Publication number
US3337776A
US3337776A US373456A US37345664A US3337776A US 3337776 A US3337776 A US 3337776A US 373456 A US373456 A US 373456A US 37345664 A US37345664 A US 37345664A US 3337776 A US3337776 A US 3337776A
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magnetic fields
solenoid
switch
taps
rectifier
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US373456A
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Elmi Enea
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GUIDONI
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GUIDONI
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    • 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

Definitions

  • Such dystoniae seem to give rise to different types of humoral dyscrasiae (i.e. an alteration of the biochemical equilibrium), caused by an overlapping of bioelectrical actions between the prehypophysis and the post-hypophysis and due to blood electrification.
  • Another object of this invention is to provide an apparatus for the generation of magnetic fields to be used for therapeutical purposes not influencing the subject through secondary stimuli.
  • the apparatus which is characterized in that it comprises a source of alternating electromotive force, with variable amplitude and/or frequency under the action of control means, at least one rectifier for said electromotive force, at least one solenoid for the generation of a magnetic field, coupled with means for the con centration of said field and constituted preferably of a ferromagnetic and/ or paramagnetic core immersed in said solenoid and preferably joined to a distributed permeance disperser, the apparatus also comprising means adapted to cause the operation of the half wave of full wave rectifier and means for the exclusion thereof, measuring and signaling means and means for inverting the circulation sense of the current inside the solenoids being further provided.
  • the source of alternating electromotive force with vari able amplitude is advantageously constituted of a trans former having its primary connected to the network, with the interposition of a switch and preferably of a fuse and the secondary with multiple taps leading to the fixed contacts of a multi-position change-over switch.
  • the rectifier is suitably constituted of rectifying diodes, preferably with blocking-layer, connected to a Graetzs bridge circuit, the DC.
  • output vertices being connected to taps for the connection of the field solenoids
  • the input vertices of said bridge being connected to two corresponding and fixed contacts of a two-way and two-position switch the moving contacts of which are respectively connected to the initial section of the secondary and the moving contact of the change-over switch with more amplitude selection ways
  • the second set of contacts of the afore-mentioned two-way and two-position switch being connected to the field solenoid taps.
  • the means adapted to cause the operation of the aforesaid bridge rectifier with the second or with both branches are advantageously constituted of a switch, capable of short-circuiting, if desired one side of the aforementioned bridge.
  • FIG. 1 is a wiring diagram, with all essential components of the apparatus, to the diagrammatically represented taps a solenoid for the generation of a magnetic field with related diffuser being connected;
  • FIG. 2 is a diagrammatic section of a parabolic type diffuser
  • FIG. 3 is a diagrammatic representation of two diffusers having the solenoids in parallel
  • FIG. 4 is a representation of a diffuser similar to that shown in FIG. 3.
  • FIG. 1 shows a transformer 1 having the primary 2 adapted for connection to an alternating current distribution network, and having a switch 3 and a fuse 4 connected in series.
  • One end terminal of the secondary 5 of the aforesaid transformer has in series an ammeter 6 and is connected to a moving contact 7a of a change-over switch 7 with 2-ways and 2-positions.
  • the secondary shows further intermediate taps or end terminals leading to contacts, generally indicated with 8a, of a one-way and multi-position switch 8 the slider 8b of which leads to the moving contact 7b of the second way of the change-over switch 7.
  • the described switch 8 may be considered as a means for varying the output voltage of the transformer and the connection points thereof with the change over switch 7 may be considered as variable voltage supplying terminals.
  • a pilot or signalling lamp 9 indicating whether of the apparatus is switched in.
  • the upper pair of fixed contacts 7c of the change-over switch 7 is connected to the taps 10 via a pole-reverser 11, the outlet terminals of which coincide with the taps 10. These taps are connected also to the outputs 12a and 12b of a Graetzs rectifier bridge 12 and in parallel with said contacts is a signalling lamp 13.
  • the contacts 76 may be considered as conductor means, which provide a direct connection with the inlet terminals of the pole reverser.
  • the other pair 7d of the fixed contacts of the change over switch 7 is connected to the inputs 12c and 12d of the rectifier bridge and has in parallel a signalling lamp 14. It is manifest that with the change-over switch 7 in the position as represented in FIG. 1, the rectifier bridge is excluded or shut off and that the alternating electromotive force the amplitude of which is a function of the position of the slider 8b, is applied to the solenoid through the taps 10. With the change-over switch 7 in the other position the rectifier is inserted in the circuit and a pulsating and unidirection electromotive force reaches the taps 10 such as to present on the one or the other tap whose polarity can be reversed by means of the reverser 11.
  • a switch 15 adapted to shortcircuit the diode of the rectifier bridge which is connected to said two points; by shortcircuiting said bridge side one of the diodes is put in series andthe other two in parallel thus obtaining that unidirectional impulses with intervals of a semi-period reach the taps, the second alternation being shortcircuited by the diodes in parallel.
  • the terminals of a solenoid 16 having housed in its inside a laminated core 17 to the one end of which is fastened a magnetic plate memher 18, carrying distributed over its surface ferromagnetic quills and extending transverse to the axis of said solenoid.
  • the magnetic field generated by the solenoid and which is alternating or pulsating depending upon the position of the change-over switch 7 and switch 15 and the amplitude of which is a function of the position of the slider 8b, localizes inside the core due to its low reluctance and returns thereto after having been diffused in the space by the ferromagnetic quills fitted in the plate member 18.
  • FIG. 2 illustrating a second difluser type, there is shown a solenoid 20- wound around a laminated core 21 to which a parabolic reflector 22 is fastened.
  • a member 23 consisting of ferromagnetic material.
  • FIGS. 3 and 4 wherein diffusers with more members are illustrated, there are shown respectively the diffusers 31 and 32 and 41 and 42, joined to the cores 33 and 34 and 43 and 44, on which the solenoids 35 and 36 and 45 and 46 are wound. It is clear that by operating two diffusers it is possible, depending upon their connections, to have opposite magnetic polarity.
  • the operation of the apparatus is as follows: The apparatus is connected to the alternating current network, then, depending on the subject to be treated, the change over switch 7 is actuated in order to select an alternating or unidirectional current supply for the solenoid 16. It is possible also to select a supply with impulses spaced by an alternation or with contiguous impulses (full wave rectification). Then, still depending on the subject, the
  • reverser 11 is actuated in order to create a field with one or the opposite direction and also the switch 8 is actuated to set the intensity of the field itself, a relative measure whereof is given by the ammeter 6.
  • the distance between the subject and the apparatus depends on the clinical requirements.
  • the levelling circuits may be advantageously transitorized and may include also 1r networks.
  • the solenoid cores connected in parallel or in series may be provided with yokes connecting heteronymous poles of diiferent polarity and made at least in part of magnetized material.
  • the member 23 of ferromagnetic material instead of a conical shape may have a profile following an exponential curve.
  • a biomedical apparatus for the treatment of a subject with controllable low frequency magnetic fields including an electric circuit with means for varying the voltage operating said circuit, solenoid means for creating the magnetic field, pole reverser means for varying the polarity of the current supplied to the solenoid, rectifier means connectable with said pole reverser means, and wherein the improvement comprises, a solenoid having an elongated laminated core With a free end, a plate member secured on the free end of said core and extending transverse thereto, and a plurality of quills of ferromagnetic material distributed over, projecting from and fixed on that surface of the plate member which is opposite to said core.
  • An apparatus comprising further switch means for disconnecting said rectifier from said circuit, signalling means for signalling the flow of current in at least one portion of said circuit and current measuring means for measuring the current flowing through said circuit.
  • a biomedical apparatus for the treatment of a subject with controllable low frequency magnetic fields including an electric circuit with means for varying the voltage operating said circuit, solenoid means for creating the magnetic field, pole reverser means for varying the polarity of the current supplied to the solenoid, rectifier means connectable with said pole reverser means and wherein the improvement comprises, a solenoid having an elongated laminated core with a free end, a tapered elongated member having a pointed end, said tapered member being connected with its end opposite to the pointed end to said free end of said core member and extending coaxial with said core, a curved shield member extending transverse to said core and said tapered member and secured on said free end of said core member, said shield member having a concave surface facing the direction from said free end of the core member towards said pointed end of the tapered member.
  • An apparatus comprising further switch means for disconnecting said rectifier from said circuit, signalling means for signalling the flow of current through at least one portion of said circuit and current measuring means for measuring the current flowing through said circuit.

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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)
  • Magnetic Treatment Devices (AREA)
US373456A 1964-06-10 1964-06-08 Biomedical apparatus for generating controllable magnetic fields Expired - Lifetime US3337776A (en)

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BE649041A BE649041A (is) 1964-06-10 1964-06-10

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3769985A (en) * 1969-08-31 1973-11-06 M Yamamoto Electrostatic treatment apparatus with charge disperal means
US3841305A (en) * 1972-10-25 1974-10-15 Univ Iowa State Res Found Inc External inductive neural stimulator system
US4012813A (en) * 1974-10-30 1977-03-22 I. D. Engineering, Inc. Anti-theft fastening device and tool for releasing same
US4056097A (en) * 1976-03-15 1977-11-01 Joachim Adolf Maass Contactless stimulus transducer
US4186729A (en) * 1977-11-25 1980-02-05 Donald L. Morton & Associates Deep heating electrode
EP0039206A1 (en) * 1980-04-23 1981-11-04 Inoue-Japax Research Incorporated Magnetic treatment device
US4510925A (en) * 1978-05-17 1985-04-16 Dan Constantinescu Method and apparatus for treating a living body
US4693238A (en) * 1982-07-20 1987-09-15 Telsa, Koncernovy Podnik Magnetotherapeutic impulse device
WO1991004102A1 (en) * 1989-09-20 1991-04-04 Harry Eichler Method and device for removing ions by remote action
US5068039A (en) * 1989-09-20 1991-11-26 Jorge Cure Method and device for dispersing ions by remote action
US5085626A (en) * 1988-12-06 1992-02-04 Alsthom International S.A. Physiotherapeutic apparatus provided for producing a magnetic field to be used as a therapeutic means
US5106491A (en) * 1989-07-04 1992-04-21 Elfriede Schulze Device for eliminating boiler scale using arrangement of magnetic coils and baffle plates
US6398712B1 (en) * 2000-02-01 2002-06-04 Mark W. Hendricksen Ergonomic steering wheel system
US20060034943A1 (en) * 2003-10-31 2006-02-16 Technology Innovations Llc Process for treating a biological organism
US20060147371A1 (en) * 2003-10-31 2006-07-06 Tuszynski Jack A Water-soluble compound
ITPR20100042A1 (it) * 2010-05-03 2011-11-04 F & B Internat S R L Dispositivo medicale per magnetoterapia.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2073201A (en) * 1928-01-21 1937-03-09 Esau Abraham Method of diathermic treatment by means of high frequency
US2393466A (en) * 1942-11-14 1946-01-22 Anaconda Wire & Cable Co Cable for production of magnetic fields
US2979655A (en) * 1957-09-19 1961-04-11 Magnaflux Corp Method and apparatus for detecting flaws
US3197678A (en) * 1961-09-26 1965-07-27 Trub Tauber & Co Ag Apparatus for producing magnetic fields

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2073201A (en) * 1928-01-21 1937-03-09 Esau Abraham Method of diathermic treatment by means of high frequency
US2393466A (en) * 1942-11-14 1946-01-22 Anaconda Wire & Cable Co Cable for production of magnetic fields
US2979655A (en) * 1957-09-19 1961-04-11 Magnaflux Corp Method and apparatus for detecting flaws
US3197678A (en) * 1961-09-26 1965-07-27 Trub Tauber & Co Ag Apparatus for producing magnetic fields

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3769985A (en) * 1969-08-31 1973-11-06 M Yamamoto Electrostatic treatment apparatus with charge disperal means
US3841305A (en) * 1972-10-25 1974-10-15 Univ Iowa State Res Found Inc External inductive neural stimulator system
US4012813A (en) * 1974-10-30 1977-03-22 I. D. Engineering, Inc. Anti-theft fastening device and tool for releasing same
US4056097A (en) * 1976-03-15 1977-11-01 Joachim Adolf Maass Contactless stimulus transducer
US4186729A (en) * 1977-11-25 1980-02-05 Donald L. Morton & Associates Deep heating electrode
US4510925A (en) * 1978-05-17 1985-04-16 Dan Constantinescu Method and apparatus for treating a living body
EP0039206A1 (en) * 1980-04-23 1981-11-04 Inoue-Japax Research Incorporated Magnetic treatment device
US4693238A (en) * 1982-07-20 1987-09-15 Telsa, Koncernovy Podnik Magnetotherapeutic impulse device
US5085626A (en) * 1988-12-06 1992-02-04 Alsthom International S.A. Physiotherapeutic apparatus provided for producing a magnetic field to be used as a therapeutic means
US5106491A (en) * 1989-07-04 1992-04-21 Elfriede Schulze Device for eliminating boiler scale using arrangement of magnetic coils and baffle plates
WO1991004102A1 (en) * 1989-09-20 1991-04-04 Harry Eichler Method and device for removing ions by remote action
US5068039A (en) * 1989-09-20 1991-11-26 Jorge Cure Method and device for dispersing ions by remote action
US6398712B1 (en) * 2000-02-01 2002-06-04 Mark W. Hendricksen Ergonomic steering wheel system
US20060034943A1 (en) * 2003-10-31 2006-02-16 Technology Innovations Llc Process for treating a biological organism
US20060147371A1 (en) * 2003-10-31 2006-07-06 Tuszynski Jack A Water-soluble compound
ITPR20100042A1 (it) * 2010-05-03 2011-11-04 F & B Internat S R L Dispositivo medicale per magnetoterapia.

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BE649041A (is) 1964-10-01

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