EP0135907A3 - - Google Patents

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Publication number
EP0135907A3
EP0135907A3 EP84111125A EP84111125A EP0135907A3 EP 0135907 A3 EP0135907 A3 EP 0135907A3 EP 84111125 A EP84111125 A EP 84111125A EP 84111125 A EP84111125 A EP 84111125A EP 0135907 A3 EP0135907 A3 EP 0135907A3
Authority
EP
European Patent Office
Prior art keywords
voltage source
terminal
vibrator
resonance frequency
electrode
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.)
Granted
Application number
EP84111125A
Other versions
EP0135907B1 (en
EP0135907A2 (en
Inventor
Ralph Meissner
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to AT84111125T priority Critical patent/ATE31257T1/en
Publication of EP0135907A2 publication Critical patent/EP0135907A2/en
Publication of EP0135907A3 publication Critical patent/EP0135907A3/xx
Application granted granted Critical
Publication of EP0135907B1 publication Critical patent/EP0135907B1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/0207—Driving circuits
    • B06B1/0223—Driving circuits for generating signals continuous in time
    • B06B1/0238—Driving circuits for generating signals continuous in time of a single frequency, e.g. a sine-wave
    • B06B1/0246—Driving circuits for generating signals continuous in time of a single frequency, e.g. a sine-wave with a feedback signal
    • B06B1/0253—Driving circuits for generating signals continuous in time of a single frequency, e.g. a sine-wave with a feedback signal taken directly from the generator circuit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
    • B06B2201/50—Application to a particular transducer type
    • B06B2201/55—Piezoelectric transducer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
    • B06B2201/70—Specific application
    • B06B2201/76—Medical, dental

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Percussion Or Vibration Massage (AREA)

Abstract

1. A circuit arrangement for supplying a piezoelectric vibrator in an ultrasonic therapy device, comprising a d.c. voltage source having a first and second terminal, an oscillator which generates the supply a.c. voltage whose frequency is approximately equal to the resonance frequency of the vibrator and exceeds 500 kHz, characterised in that the oscillator is a single-phase oscillator comprising a power field-effect transistor (10) which has a gate electrode (G), a drain electrode (D), and a source electrode (S) ; that the drain electrode (D) ist connected via the vibrator (1) to the first terminal (P) of the d.c. voltage source, and the source electrode (S) is connected via the primary winding (22) of a feed-back transformer (20) to the second terminal (N) of the d.c. voltage source ; that the gate electrode (G) is connected via a series resistor (11) to a potential divider (5, 7) which lies between the terminals of the d.c. voltage source ; and that the resistor (7) of the potential divider, which is connected to the second terminal (N) of the d.c. voltage source, is connected in parallel to a series resonant circuit which comprises a capacitor (23, 24) and the secondary winding (21) of the feedback transformer (20) whose resonance frequency is approximately equal to the resonance frequency of the vibrator (1).
EP84111125A 1983-09-28 1984-09-18 Circuitry for exciting a piezoelectric oscillator in an ultrasound therapy device Expired EP0135907B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84111125T ATE31257T1 (en) 1983-09-28 1984-09-18 CIRCUIT FOR EXCITATION OF AN ULTRASOUND THERAPY HEAD.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3335158 1983-09-28
DE19833335158 DE3335158A1 (en) 1983-09-28 1983-09-28 CIRCUIT FOR EXCITING AN ULTRASONIC THERAPY HEAD

Publications (3)

Publication Number Publication Date
EP0135907A2 EP0135907A2 (en) 1985-04-03
EP0135907A3 true EP0135907A3 (en) 1985-06-05
EP0135907B1 EP0135907B1 (en) 1987-12-09

Family

ID=6210318

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84111125A Expired EP0135907B1 (en) 1983-09-28 1984-09-18 Circuitry for exciting a piezoelectric oscillator in an ultrasound therapy device

Country Status (3)

Country Link
EP (1) EP0135907B1 (en)
AT (1) ATE31257T1 (en)
DE (2) DE3335158A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5001649A (en) * 1987-04-06 1991-03-19 Alcon Laboratories, Inc. Linear power control for ultrasonic probe with tuned reactance
DE3934921C1 (en) * 1989-10-20 1991-04-25 Kln Ultraschall Gmbh, 6148 Heppenheim, De Switching circuitry for reactive loads such as coils, and oscillators - has diode in antiparallel with each diode in series with semiconductor switch
WO2011125544A1 (en) * 2010-04-09 2011-10-13 オリンパスメディカルシステムズ株式会社 Ultrasonic surgery system and surgical treatment tool

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3584244A (en) * 1969-06-10 1971-06-08 Clevite Corp Oscillator circuit for an ultrasonic cleaner, utilizing a saturable core transformer
US4012647A (en) * 1974-01-31 1977-03-15 Ultrasonic Systems, Inc. Ultrasonic motors and converters
US4311922A (en) * 1979-11-14 1982-01-19 General Electric Company Variable excitation circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3584244A (en) * 1969-06-10 1971-06-08 Clevite Corp Oscillator circuit for an ultrasonic cleaner, utilizing a saturable core transformer
US4012647A (en) * 1974-01-31 1977-03-15 Ultrasonic Systems, Inc. Ultrasonic motors and converters
US4311922A (en) * 1979-11-14 1982-01-19 General Electric Company Variable excitation circuit

Also Published As

Publication number Publication date
EP0135907B1 (en) 1987-12-09
DE3335158A1 (en) 1985-04-04
ATE31257T1 (en) 1987-12-15
EP0135907A2 (en) 1985-04-03
DE3467981D1 (en) 1988-01-21

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