Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ultrasonic probe and ultrasonic diagnosing device

A diagnostic equipment and ultrasonic technology, applied in the field of ultrasonic probes, can solve problems such as non-uniform sound pressure distribution and reduced resolution of ultrasonic probes, and achieve the effect of uniform low-frequency response characteristics and high resolution

Inactive Publication Date: 2006-03-01
HITACHI MEDICAL CORP
View PDF1 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, according to the ultrasonic probe disclosed in Patent Document 1, the low-frequency response at both ends in the short-axis direction becomes higher than that at the central portion, and the sound pressure at each end is higher than that at the central portion, whereby a very Uniform sound pressure distribution
Subsequently, the resolution of the ultrasound probe is reduced

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ultrasonic probe and ultrasonic diagnosing device
  • Ultrasonic probe and ultrasonic diagnosing device
  • Ultrasonic probe and ultrasonic diagnosing device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0041] will refer to Figure 1 to Figure 3 An embodiment of the present invention will be described. figure 1 is a perspective view of the main part of the ultrasonic probe according to the embodiment of the present invention. figure 2 The overall configuration of the ultrasonic diagnostic apparatus according to the embodiment of the present invention is shown. image 3 is a cross-sectional view of a portion related to the piezoelectric layer according to the embodiment.

[0042] exist figure 2 Among them, the ultrasonic pulse sent from the ultrasonic pulse generating circuit 31 is sent to the transmitting unit 32, and is subjected to transmission processing including transmission focusing processing, amplification processing, etc. in the transmitting unit 32. Then, the ultrasonic pulses are sent to the ultrasonic probe 1 through the transmission / reception separation unit 33 . The reflected echo signal received by the ultrasonic probe 1 is sent to the receiving processin...

no. 2 example

[0052] Figure 7 A sectional view of a piezoelectric layer portion of an ultrasonic probe according to a second embodiment of the present invention is shown. The difference between the second embodiment and the first embodiment lies in the two-layer structure of the piezoelectric layer 2 and the adjustment layer 9 provided on the back side of the piezoelectric layer 2 . First, the piezoelectric layer 2 includes two mutually laminated planar piezoelectric layers 2-3 and 2-4, which are also formed. The adjustment layer 9 formed on the back side of the piezoelectric layer 2-4 includes a material having an acoustic impedance approximately equal to that of the piezoelectric layer 2, such as a metal including ceramics, aluminum, copper, or the like. Further, the backing layer 4 includes a material whose acoustic impedance is much smaller than that of the adjustment layer 9 and whose attenuation rate is greater than the attenuation rate of the adjustment layer 9 . For example, the ...

no. 3 example

[0055] Figure 8 A partial sectional view of the piezoelectric layer of an ultrasonic probe according to a third embodiment of the present invention is shown. The difference between the third embodiment and the first embodiment is that the adjustment layer 9 is provided on the back side of the piezoelectric layer 2 . In other words, the characteristic parts of the first embodiment and the second embodiment are combined with each other, so that both the effect of the first embodiment and the effect of the second embodiment can be obtained. That is, uniform low-frequency sound pressure in the minor axis direction, and an aperture variable function for obtaining a narrower beam at each frequency than in the past can be realized.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A ultrasonic probe formed by arranging a plurality of ultrasonic vibrators each including a piezoelectric layer (2) and a pair of electrodes (7-1, 7-2) provided to sandwich this piezoelectric layer, the piezoelectric layer (2) consisting of a first piezoelectric layer (2-1) disposed on the ultrasonic wave outputting side across a common electrode (8) and a second piezoelectric layer (2-2) disposed on the opposite side, each ultrasonic vibrator having a uniform low-frequency response distribution in a minor-axis direction perpendicular to the arranging direction of the ultrasonic vibrators and having a high high-frequency response distribution at the center in the minor-axis direction, characterized in that the characteristics of the minor-axis-direction frequency and sound pressure of the first piezoelectric layer are complemented by those of the second piezoelectric layer to thereby make uniform frequency characteristics for a minor-axis-direction low frequency.

Description

technical field [0001] The present invention relates to an ultrasonic probe for transmitting and receiving ultrasonic waves between itself and a patient, and ultrasonic diagnostic equipment including the ultrasonic probe. More specifically, the present invention relates to an ultrasonic probe capable of changing the aperture in the minor axis direction. Background technique [0002] Generally, an ultrasonic transducer includes a pair of electrodes sandwiching a layer including a piezoelectric material (hereinafter referred to as a piezoelectric layer), and an ultrasonic probe includes a plurality of ultrasonic transducers in which, for example, the ultrasonic transducers are one-dimensionally arrangement. Further, a predetermined number of transducers arranged in the long-axis direction is determined as an aperture, a plurality of transducers belonging to the aperture are driven, and the ultrasonic beam is converged to the patient body to be measured. part so that the part...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/00A61B8/14B06B1/06G10K11/32H04R17/00
CPCG10K11/32B06B1/0622
Inventor 冈崎英树泉美喜雄
Owner HITACHI MEDICAL CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com