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Convex ultrasonic probe and ultrasonic diagnostic apparatus

An ultrasonic and convex technology, applied in ultrasonic/sonic/infrasonic diagnosis, sonic diagnosis, infrasonic diagnosis, etc., can solve problems such as adverse thermal effects, and achieve the effects of preventing multiple reflections, improving image quality, and excellent heat dissipation.

Inactive Publication Date: 2007-01-10
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In severe cases, there is also the possibility of causing thermal adverse effects on the object due to the heating of the acoustic lens on the probe surface

Method used

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  • Convex ultrasonic probe and ultrasonic diagnostic apparatus
  • Convex ultrasonic probe and ultrasonic diagnostic apparatus
  • Convex ultrasonic probe and ultrasonic diagnostic apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] First, ethylene-vinyl acetate copolymer (EVAC) containing 50% by weight of vinyl acetate was supplied between hot rolls heated to about 70° C., and pre-kneaded for 20 minutes. Then, in 100 parts by weight of EVAC after pre-kneading, add carbon fibers (filler) and dioctylsebacate (dioctylsebacate) with an average diameter of 10 μm and an average length of 20 mm; 6 parts by weight of vulcanizing agent, 2 parts by weight Glycerin Zinc Stearate (vulcanization accelerator), 4 parts by weight of Galvani Wax (Calvani Wax) and 3 parts by weight of silicone resin, and then kneading and flakes for 20 minutes to become a width of 400mm, thickness 0.5mm flakes. In addition, pitch-based carbon fibers having a thermal conductivity of 500 W / m·K were used as the above-mentioned carbon fibers, and the carbon fibers were blended into the kneaded product in an amount of 50% by volume. Next, a circular plate with a diameter of 100 mm was punched out from the sheet. After laminating 40 di...

Embodiment 2

[0090] The same backing member as in Example 1 was produced except that the thickness of the sound absorbing layer was 5 mm. In addition, the outer dimensions of the backing member were the same as in Example 1, and the thickness of the support was reduced by increasing the thickness of the sound absorbing layer to about 5 mm. In addition, a dummy test body of an ultrasonic probe similar to that of Example 1 was assembled using this backing member.

[0091] Reference example 1

[0092] A backing member was produced in the same manner as in Example 1 except that the thickness of the sound absorbing layer was 2 mm. In addition, the external dimensions of the backing member were the same as in Example 1, and the thickness of the support was increased by reducing the thickness of the sound absorbing layer to about 2 mm. In addition, a dummy test body of an ultrasonic probe similar to that of Example 1 was assembled using this backing member.

example 2

[0094] A backing member was produced in the same manner as in Example 1 except that the thickness of the sound absorbing layer was 9 mm. In addition, the outer dimensions of the backing member were the same as in Example 1, and the thickness of the support was reduced by increasing the thickness of the sound absorbing layer to about 9 mm. In addition, a dummy test body of an ultrasonic probe similar to that of Example 1 was assembled using this backing member.

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Abstract

The invention provides a convex ultrasonic probe which can sufficiently damp ultrasonic waves heading for the back side from the piezoelectric elements of a plurality of channels in a backing member having a convex curved surface, has a good heat dissipation property and can lessen the concentration of generated heat. The convex ultrasonic probe is characterised by that it has the backing member including a plurality of channels arranged at required intervals and having the piezoelectric elements and sound matching layers formed on the piezoelectric elements, a supporting body having a convex curved surface and heat conductivity of 70 W / m*K or higher, a sheetlike sound absorbing layer whose entire thickness is uniform, which is stuck to the convex curved surface of the supporting body, on which the piezoelectric elements of the channels are mounted, and has grooves formed in the positions corresponding to the spaces of the channels and has a uniform thickness, and sonic lenses formed on the sound matching layers of the channels. When the thickness of the sound absorbing layer is t1 and the thickness of the piezoelectric elements is t2, the probe satisfies the relation of t1 / t2=6 to 20.

Description

technical field [0001] The present invention relates to a convex ultrasonic probe that transmits and receives ultrasonic signals to a subject, and an ultrasonic diagnostic apparatus including the ultrasonic probe. Background technique [0002] A medical ultrasonic diagnostic apparatus or an ultrasonic image inspection apparatus is a device that transmits an ultrasonic signal to an object and receives a reflected signal (echo signal) from the object to image the inside of the object. This medical ultrasonic diagnostic apparatus or ultrasonic image inspection apparatus mainly uses an array-type ultrasonic probe having a function of transmitting and receiving ultrasonic signals. [0003] An array type ultrasonic probe, which is structured to include: a backing member; a plurality of channels bonded to the backing member and arranged in a matrix at desired intervals; an acoustic lens bonded to the channels . The above-mentioned plurality of channels are respectively formed on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/24G10K11/32A61B8/00G01S3/00
CPCG01S15/892G10K11/002A61B8/14
Inventor 山下洋八细野靖晴
Owner KK TOSHIBA
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