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Composite piezoelectric material, ultrasonic probe, ultrasonic endoscope, and ultrasonic diagnostic apparatus

A piezoelectric material and ultrasonic technology, applied in the fields of ultrasonic probes or ultrasonic endoscopes and main equipment, ultrasonic endoscopes, and ultrasonic diagnostic equipment, can solve problems such as insufficient radiation, poor radiation efficiency, and poor heat conduction

Inactive Publication Date: 2008-12-17
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in Documents 1-3, radiation efficiency is poor because heat generated inside the vibrator is released only through the interface between the vibrator and the backing material
That is, piezoelectric ceramics such as PZT forming the vibrator is poor in heat conduction, and epoxy resin, silicone resin, or urethane resin or the like filled between a plurality of vibrators is poor in heat conduction, It is therefore not expected that sufficient radiation
Then, there has been a problem that the radiation at the central part of the vibrator array becomes particularly insufficient and causes a temperature distribution in which the temperature at the central part is higher than that of other parts and the peak temperature becomes higher
Also, in Document 4, at least one acoustic matching layer is manufactured as an acoustic matching layer having low thermal conductivity, but temperature rise of the vibrator cannot be avoided unless heat generated inside the vibrator is effectively transferred to the outside

Method used

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  • Composite piezoelectric material, ultrasonic probe, ultrasonic endoscope, and ultrasonic diagnostic apparatus
  • Composite piezoelectric material, ultrasonic probe, ultrasonic endoscope, and ultrasonic diagnostic apparatus
  • Composite piezoelectric material, ultrasonic probe, ultrasonic endoscope, and ultrasonic diagnostic apparatus

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Embodiment Construction

[0044] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The same reference numerals will be assigned to the same component elements, and descriptions thereof will be omitted.

[0045] figure 1 is a perspective view schematically showing the internal structure of the ultrasonic probe according to the first embodiment of the present invention, and figure 2 is along a plane parallel to the YZ plane figure 1 A cross-sectional view of the internal structure of the ultrasound probe is shown. The ultrasonic probe is used when extracavity scanning is performed in contact with a subject to be examined, or when intracavity scanning is performed by being inserted into a body cavity of a subject.

[0046] Such as figure 1 and 2 As shown in , the ultrasonic probe has: a backing material 1; a plurality of ultrasonic transducers (piezoelectric vibrators) 2 arranged on the backing material 1; Anisotropi...

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Abstract

A composite piezoelectric material capable of reducing a peak temperature of a vibrator array to be used for transmitting or receiving ultrasonic waves in ultrasonic imaging. The composite piezoelectric material includes: plural piezoelectric materials arranged along a flat surface or curved surface; and an anisotropic heat conducting material having a higher coefficient of thermal conductivity in at least one direction and provided between the plural piezoelectric materials and / or at outer peripheries of the plural piezoelectric materials.

Description

technical field [0001] The present invention relates to a composite piezoelectric material for use in an array of ultrasonic transducers for transmitting and receiving ultrasonic waves. Furthermore, the present invention relates to an ultrasonic probe including such an ultrasonic transducer and used when intracavity scanning or extracavity scanning is performed on an object to be examined, and also relates to an ultrasonic probe used by being inserted into a body cavity of an object. endoscope. Furthermore, the present invention relates to an ultrasonic diagnostic apparatus including such an ultrasonic probe or ultrasonic endoscope and a main body device. Background technique [0002] In the medical field, various imaging techniques have been developed in order to observe the inside of an object to be examined, and to perform diagnosis. In particular, ultrasonic imaging, which acquires information inside a subject by sending and receiving ultrasonic waves, enables real-tim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L41/18H01L41/08B06B1/06G01S7/521G01S15/89A61B8/12
CPCB06B1/0622G10K11/004H10N30/852
Inventor 日向浩彰
Owner FUJIFILM CORP
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