GB1201586A - Automatic control of electrotherapeutic apparatus - Google Patents

Automatic control of electrotherapeutic apparatus

Info

Publication number
GB1201586A
GB1201586A GB3560/69A GB356069A GB1201586A GB 1201586 A GB1201586 A GB 1201586A GB 3560/69 A GB3560/69 A GB 3560/69A GB 356069 A GB356069 A GB 356069A GB 1201586 A GB1201586 A GB 1201586A
Authority
GB
United Kingdom
Prior art keywords
loop
motor
inductance
band
electrotherapeutic apparatus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3560/69A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dynapower Systems Corp
Original Assignee
Dynapower Systems Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dynapower Systems Corp filed Critical Dynapower Systems Corp
Publication of GB1201586A publication Critical patent/GB1201586A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/40—Applying electric fields by inductive or capacitive coupling ; Applying radio-frequency signals
    • A61N1/403—Applying electric fields by inductive or capacitive coupling ; Applying radio-frequency signals for thermotherapy, e.g. hyperthermia
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S323/00—Electricity: power supply or regulation systems
    • Y10S323/911—Medical electronics

Landscapes

  • 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)
  • Radiation-Therapy Devices (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Surgical Instruments (AREA)

Abstract

1,201,586. Electrotherapeutic apparatus. DY NAPOWER SYSTEMS CORP OF CALIFORNIA. 22 Jan., 1969 [15 Feb., 1968], No. 3560/69. Heading A5R. Electrotherapeutic apparatus includes a power radiating head 10 having means for the transmission of high frequency radiation including coupled primary and secondary coils, 12 and 13, and a capacitor 14 connected to the secondary coil to form a tank circuit tuned to a predetermined high frequency, input means 18 to supply pulses of said frequency, a network 25 and transmission line coupled between the input means 18 and primary coil 12, the network having a variable impedance element and means including a servo loop apparently responsive to patient induced detuning of the circuit to vary the impedance of the element. The apparatus is generally similar to that described in Specification 1,150,524, except that the variable condenser 27 is not adjusted manually, but by an electric motor 73 controlled by the feed-back from an inductance 71 in the head 10 through a servo-loop 70. The loop 70 comprises a pair of band-pass filters 76, 77 feeding a differential amplifier of which the output is fed to the motor 73. The filters are each tuned to a band one on either side of the predetermined frequency of the main circuit so that de-tuning caused by the presence of the patient is picked up by the inductance 71 and the motor 73 is energised to adjust the condenser 27 in such a direction as to restore the system to its original tuning.
GB3560/69A 1968-02-15 1969-01-22 Automatic control of electrotherapeutic apparatus Expired GB1201586A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US70564768A 1968-02-15 1968-02-15

Publications (1)

Publication Number Publication Date
GB1201586A true GB1201586A (en) 1970-08-12

Family

ID=24834364

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3560/69A Expired GB1201586A (en) 1968-02-15 1969-01-22 Automatic control of electrotherapeutic apparatus

Country Status (2)

Country Link
US (1) US3543762A (en)
GB (1) GB1201586A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126098A (en) * 1982-08-13 1984-03-21 Metronex Engineering Pty Ltd Diathermy apparatus

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3800802A (en) * 1972-01-07 1974-04-02 Int Medical Electronics Ltd Short-wave therapy apparatus
JPS4984092A (en) * 1972-12-20 1974-08-13
US4069827A (en) * 1975-08-20 1978-01-24 The Burdick Corporation Diathermy apparatus
US4210152A (en) * 1978-05-01 1980-07-01 International Medical Electronics Ltd. Method and apparatus for measuring and controlling the output power of a shortwave therapy apparatus
US4392040A (en) * 1981-01-09 1983-07-05 Rand Robert W Induction heating apparatus for use in causing necrosis of neoplasm
EP0136363A1 (en) * 1983-09-07 1985-04-10 P + T Patent und Technologie AG Self-adjusting applicator for intermittent high frequency pulses for short-wave apparatus used for medical-physical therapies
DE3406565C2 (en) * 1984-02-23 1995-04-27 Kraus Werner Device for generating a low-frequency AC voltage on two tissue electrodes of an implant used for tissue regeneration
US4548208A (en) * 1984-06-27 1985-10-22 Medtronic, Inc. Automatic adjusting induction coil treatment device
US4709701A (en) * 1986-04-15 1987-12-01 Medical Research & Development Associates Apparatus for medical treatment by hyperthermia
EP0988091B1 (en) 1998-01-15 2009-10-21 Regenesis Biomedical, Inc. Improved pulsed electromagnetic energy treatment apparatus
US6810286B2 (en) 2000-03-06 2004-10-26 Medtronic, Inc Stimulation for delivery of molecular therapy
US7510555B2 (en) 2004-05-07 2009-03-31 Therm Med, Llc Enhanced systems and methods for RF-induced hyperthermia
US7627381B2 (en) 2004-05-07 2009-12-01 Therm Med, Llc Systems and methods for combined RF-induced hyperthermia and radioimmunotherapy
US20070250139A1 (en) * 2004-05-07 2007-10-25 John Kanzius Enhanced systems and methods for RF-induced hyperthermia II
US20130153440A9 (en) * 2006-11-13 2013-06-20 Kc Energy, Llc Rf systems and methods for processing salt water

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126098A (en) * 1982-08-13 1984-03-21 Metronex Engineering Pty Ltd Diathermy apparatus

Also Published As

Publication number Publication date
US3543762A (en) 1970-12-01

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees