Array-type ultrasonic probe and ultrasonic diagnostic apparatus

An ultrasonic and array-type technology, applied in ultrasonic/acoustic/infrasonic diagnostics, acoustic diagnostics, infrasonic diagnostics, etc., can solve the problem of sound velocity, attenuation rate, acoustic Impedance and other acoustic characteristics, to achieve the effect of excellent consistency of thermal expansion coefficient, small mutual interference, and improved image quality

Inactive Publication Date: 2007-12-05
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, information on acoustic characteristics such as sound velocity, attenuation rate, and acoustic impedance of these siloxane materials for LEDs is not disclosed, nor is the application in ultrasonic probes mentioned.

Method used

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  • Array-type ultrasonic probe and ultrasonic diagnostic apparatus
  • Array-type ultrasonic probe and ultrasonic diagnostic apparatus
  • Array-type ultrasonic probe and ultrasonic diagnostic apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] SCR1011 resin A and SCR1011 resin B manufactured by Shin-Etsu Chemical Co., Ltd., which are two-component silicone resins, were accurately weighed in a weight ratio of 100:100. This siloxane resin mixture was put into a polyethylene container, stirred for 3 minutes with a rotary mixer, and mixed uniformly. This liquid resin was defoamed for 10 minutes in a vacuum container, and it put into the container with Teflon (registered trademark). Next, after preliminary curing at 85° C. for 1 hour, main curing was performed at 125° C. for 2 hours, and a third acoustic matching layer material containing a mixture containing a silicone resin was produced.

[0086] For the cured product containing the silicone resin mixture obtained in Example 1 (the third acoustic matching layer material), TG / DTA was measured using a thermogravimetric analyzer / differential thermal analyzer (TG / DTA) under the following conditions curve. In addition, for the same cured silicone resin, the FTIR sp...

Embodiment 2～9

[0102] As shown in the following Table 1, as the two-component silicone resin (siloxane resin-based mixture), SCR1012, SCR1011, and SCR1004 produced by Shin-Etsu Chemical Co., Ltd. were used, and the third was produced by the same method as in Example 1. Material for acoustic matching layer. Among these materials, several prescribed filler materials are dispersed. As fillers, silicone rubber particles with an average particle size of 3 μm, epoxy resin particles with an average particle size of 10 μm, powdered silicon oxide with an average particle size of 20 nm, powdered zinc oxide with an average particle size of 30 nm, and Powdered titanium oxide with a diameter of 50 nm, fibrous glass with an average particle diameter of 5 μm and an average length of 100 μm, and fibrous carbon with an average particle diameter of 7 μm and an average length of 100 μm.

Embodiment 10、11、 comparative example 1～6

[0104] As shown in the following Table 2, as the two-component silicone resin-containing mixture (silicone resin-based mixture), SCR1011, SCR1012, polyurethane rubber, silicone rubber, epoxy resin, polyester, etc. manufactured by Shin-Etsu Chemical Co., Ltd. Ethylene, high-hardness siloxane resin (trade name produced by Shin-Etsu Silicone Co., Ltd.: KER2500), as the base resin, use (trade name produced by MomentivePerformance Materials Company [former name: GE Toshiba Silicon Company]: IVSM4500), through and embodiment 1 The same method is used to make the materials for the third acoustic matching layer respectively. Among these materials, several prescribed filler materials are dispersed. As fillers, silicone rubber particles with an average particle size of 3 μm, powdered silica with an average particle size of 20 nm, powdered alumina with an average particle size of 100 nm, and fibrous fibers with an average particle size of 5 μm and an average length of 100 μm are used. s...

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Abstract

Disclosed is an array ultrasonic probe, including a plurality of channels arranged with spaces, each channel having a piezoelectric element and a laminated acoustic matching layer structure formed of at least three layers and arranged on the piezoelectric element, a backing on which the piezoelectric element of each channel is mounted and having trenches in which are formed at places corresponding to the spaces, and an acoustic lens formed to cover at least the surface of the uppermost acoustic matching layer of each channel, wherein the uppermost acoustic matching layer comprises a silicone resin-containing mixture having a Shore hardness D not lower than 40 at 25 DEG C., and exhibits an acoustic impedance of 1.8 to 2.5 MRayls at 25 DEG C.

Description

technical field [0001] The present invention relates to an array-type ultrasonic probe that transmits and receives ultrasonic signals to a subject and the like, and an ultrasonic diagnostic apparatus including the array-type ultrasonic probe. Background technique [0002] Ultrasonic diagnostic apparatuses and ultrasonic image inspection apparatuses for medical use transmit ultrasonic signals to an object, receive reflected signals (reflected wave signals) from within the object, and image the inside of the object. Such medical ultrasonic diagnostic apparatuses and ultrasonic image inspection apparatuses mainly use electronically operated array type ultrasonic probes having an ultrasonic signal transmission and reception function. [0003] The structure of the array type ultrasonic probe includes a spacer, a plurality of channels bonded to the spacer and arranged in an array at predetermined intervals, and an acoustic lens bonded to the channels. The above-mentioned pluralit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/00G01N29/24
Inventor 山下洋八细野靖晴
Owner KK TOSHIBA
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