Double-frequency ultrasonic transducer and ultrasonic detection equipment

A dual-frequency ultrasound and transducer technology, applied in ultrasonic/sonic/infrasonic diagnosis, fixer, sound wave diagnosis, etc., can solve the problem of work efficiency, reception sensitivity, limited application range, low-frequency and high-frequency parts of the transducer Problems such as not being able to work at the same time

Pending Publication Date: 2020-07-31
SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if the transducer works at a non-resonant frequency, the working efficiency and receiving sensitivity will be affected, and the low-frequency and high-frequency parts of the transducer cannot work at the same time, which limits its application range

Method used

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  • Double-frequency ultrasonic transducer and ultrasonic detection equipment
  • Double-frequency ultrasonic transducer and ultrasonic detection equipment
  • Double-frequency ultrasonic transducer and ultrasonic detection equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] refer to Figure 1-2 , this embodiment adopts the scheme to make further improvements, and provides a dual-frequency single-array ultrasonic transducer with a common backing, that is, the low-frequency unit 10 and the high-frequency unit 20 share the backing layer 4, and the low-frequency unit 10 also includes The low-frequency flexible circuit board layer 3, the low-frequency piezoelectric layer 2 and the low-frequency matching layer 1 are sequentially stacked and arranged on the first side surface of the backing layer 4. The high-frequency flexible circuit board layer 5, the high-frequency piezoelectric layer 6 and the high-frequency matching layer 7 on the second side surface opposite to the side surface;

[0043]Among them, the low-frequency unit 10 can emit low-frequency ultrasonic waves of 1.5-3.5 MHz, and the high-frequency unit 20 can emit high-frequency ultrasonic waves of 12-30 MHz.

[0044] In actual use, for example, the ultrasonic detection of the screw tr...

Embodiment 2

[0046] refer to Figure 3-4 , in the present embodiment, the scheme is further improved, and a dual-frequency linear array ultrasonic transducer with a common backing is provided, which includes a plurality of array elements, specifically:

[0047] The low-frequency unit 10 and the high-frequency unit 20 share the backing layer 4 , and the low-frequency unit 10 further includes a low-frequency flexible circuit board layer 3 , a low-frequency piezoelectric layer 2 and a low-frequency matching layer that are sequentially stacked on the first side surface of the backing layer 4 . 1. The high-frequency unit 20 further includes a high-frequency flexible circuit board layer 5, a high-frequency piezoelectric layer 6 and a high-frequency matching layer 7 that are sequentially stacked on the second side surface of the backing layer 4 opposite to the first side surface;

[0048] The low-frequency piezoelectric layer 2 and the low-frequency matching layer 1 constitute a low-frequency arr...

Embodiment 3

[0054] refer to Figure 5 , in the present embodiment, the scheme is further improved, and a dual-frequency single-array element focused ultrasonic transducer with a common backing is provided, specifically:

[0055] The low-frequency unit 10 and the high-frequency unit 20 share the backing layer 4 , and the low-frequency unit 10 further includes a low-frequency flexible circuit board layer 3 , a low-frequency piezoelectric layer 2 and a low-frequency matching layer that are sequentially stacked on the first side surface of the backing layer 4 . 1. The high-frequency unit 20 further includes a high-frequency flexible circuit board layer 5, a high-frequency piezoelectric layer 6 and a high-frequency matching layer 7 that are sequentially stacked on the second side surface of the backing layer 4 opposite to the first side surface;

[0056] The low-frequency matching layer 1, the low-frequency piezoelectric layer 2, the low-frequency flexible circuit board layer 3, the backing la...

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Abstract

The invention discloses a double-frequency ultrasonic transducer and ultrasonic detection equipment. The double-frequency ultrasonic transducer comprises a low-frequency unit and a high-frequency unit; the low-frequency unit and the high-frequency unit share a backing layer, the low-frequency unit further comprises a low-frequency flexible circuit board layer, a low-frequency piezoelectric layer and a low-frequency matching layer, and the high-frequency unit further comprises a high-frequency flexible circuit board layer, a high-frequency piezoelectric layer and a high-frequency matching layer; or, the low-frequency unit and the high-frequency unit share the backing layer and a flexible circuit board layer at the same time, the flexible circuit board layer annularly wraps the periphery ofthe backing layer, the low-frequency unit further comprises a low-frequency piezoelectric layer and a low-frequency matching layer, and the high-frequency unit further comprises a high-frequency piezoelectric layer and a high-frequency matching layer. The double-frequency ultrasonic transducer is provided with the low-frequency unit and the high-frequency unit which can independently emit low-frequency ultrasonic waves and high-frequency ultrasonic waves, and the low-frequency unit and the high-frequency unit can work separately or simultaneously and do not interfere with each other; and the function of low-frequency and high-frequency ultrasonic detection can be realized, and the characteristic of small size can be obtained.

Description

technical field [0001] The invention relates to the field of ultrasonic technology, in particular to a dual-frequency ultrasonic transducer and ultrasonic detection equipment. Background technique [0002] The application of ultrasound in clinical orthopedic surgery, especially in spinal pedicle fixation surgery, uses high-frequency ultrasound to clearly image the surrounding wall of the intraosseous screw track with high resolution to detect the integrity of the established screw track; The high penetration of ultrasound can detect the distance between the peripheral wall of the screw road and the cortical bone, and provide guidance for the direction of further screw insertion. [0003] The existing ultrasonic transducers are all designed and manufactured at a specified center frequency, and the transducers work at the center resonance frequency. However, in some special application fields, ultrasonic transducers with two or even multiple frequencies may be required, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B06B1/06A61B8/00A61B34/10A61B34/20A61B17/90
CPCA61B8/4483A61B17/88A61B34/10A61B34/20A61B2034/105A61B2034/107A61B2034/108A61B2034/2063A61B17/90B06B1/0607B06B2201/55B06B2201/76
Inventor 李培洋邵维维李章剑崔崤峣
Owner SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI
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