EP0826435A3 - Ultrasonic transducer for diagnostic and therapeutic application - Google Patents

Ultrasonic transducer for diagnostic and therapeutic application Download PDF

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Publication number
EP0826435A3
EP0826435A3 EP97114389A EP97114389A EP0826435A3 EP 0826435 A3 EP0826435 A3 EP 0826435A3 EP 97114389 A EP97114389 A EP 97114389A EP 97114389 A EP97114389 A EP 97114389A EP 0826435 A3 EP0826435 A3 EP 0826435A3
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EP
European Patent Office
Prior art keywords
ultrasonic transducer
diagnostic
transducer element
electrode
therapeutic application
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.)
Withdrawn
Application number
EP97114389A
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German (de)
French (fr)
Other versions
EP0826435A2 (en
Inventor
Todor Dipl.-Ing. Sheljaskov
Ulrich Dipl.-Ing. Schätzle
Reinhard Prof. Lerch
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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
Publication of EP0826435A2 publication Critical patent/EP0826435A2/en
Publication of EP0826435A3 publication Critical patent/EP0826435A3/en
Withdrawn legal-status Critical Current

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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
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0607—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements

Abstract

Ultraschallwandler, welcher im Diagnostik- oder Therapiebetrieb Ultraschallwellen unterschiedlicher Wellenlängen erzeugt, aufweisend eine n x λ/4-Anpassungsschicht (101 bis 10z) für ein an den Ultraschallwandler (81 bis 8z) angrenzendes Ausbreitungsmedium (9), und ein piezoelektrisches Ultraschallwandlerelement (111 bis 11z) mit einer zwischen der Anpassungsschicht (101 bis 10z) und dem Ultraschallwandlerelement (111 bis 11z) befindlichen ersten Elektrode (121 bis 12z), einer auf der gegenüberliegenden Seite des Ultraschallwandlerelementes (111 bis 11z) angebrachten zweiten Elektrode (131 bis 13z) und einer dritten Elektrode (141 bis 14z), welche das Ultraschallwandlerelement (111 bis 11z) in zwei Bereiche (151 bis 15z, 161 bis 16z) teilt, wobei in Abhängigkeit von der Unterteilung des Ultraschallwandlerelementes (111 bis 11z) Ultraschallwellen für den Diagnostik- und Therapiebetrieb erzeugbar sind und wobei die n x λ/4-Anpassungsschicht (101 bis 10z) sowohl für die Wellenlänge der Ultraschallwellen im Diagnostik- als auch im Therapiebetrieb wirksam ist.

Figure 00000001
Ultrasonic transducer, which generates ultrasonic waves of different wavelengths in diagnostic or therapeutic operation, comprising an nx λ / 4 adaptation layer (10 1 to 10 z ) for a propagation medium (9) adjacent to the ultrasonic transducer (8 1 to 8 z ), and a piezoelectric ultrasonic transducer element (11 1 to 11 z) having a (z 10 1 to 10) between the matching layer and the ultrasonic transducer element (11 1 to 11 z) located first electrode (12 1 to 12), and one on the opposite side of the ultrasonic transducer element (11 1 to 11 z ) attached second electrode (13 1 to 13 z ) and a third electrode (14 1 to 14 z ), which the ultrasonic transducer element (11 1 to 11 z ) in two areas (15 1 to 15 z, 16 1 to 16 z ) divides, depending on the subdivision of the ultrasound transducer element (11 1 to 11 z ) ultrasound waves can be generated for diagnostic and therapeutic operation and wherein the nx λ / 4 adaptation layer (10 1 to 10 z ) is effective for both the wavelength of the ultrasound waves in the diagnostic and in the therapy mode.
Figure 00000001
EP97114389A 1996-09-02 1997-08-20 Ultrasonic transducer for diagnostic and therapeutic application Withdrawn EP0826435A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19635593A DE19635593C1 (en) 1996-09-02 1996-09-02 Ultrasound transducer for diagnostic and therapeutic use
DE19635593 1996-09-02

Publications (2)

Publication Number Publication Date
EP0826435A2 EP0826435A2 (en) 1998-03-04
EP0826435A3 true EP0826435A3 (en) 2000-11-15

Family

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Family Applications (1)

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EP97114389A Withdrawn EP0826435A3 (en) 1996-09-02 1997-08-20 Ultrasonic transducer for diagnostic and therapeutic application

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US (1) US5823962A (en)
EP (1) EP0826435A3 (en)
DE (1) DE19635593C1 (en)

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DE19635593C1 (en) 1998-04-23
EP0826435A2 (en) 1998-03-04
US5823962A (en) 1998-10-20

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