Spherical cap type concave spherical surface ultrasonic transducer

A technology of ultrasonic transducer and concave spherical surface, which is applied in the direction of fluid using vibration, etc., can solve the problems of large ultrasonic attenuation, complicated process of focusing, and large ultrasonic focus, so as to achieve small sound wave loss, improve focusing performance, and focus small effect

Inactive Publication Date: 2006-12-20
SHENZHEN PRO HIFU MEDICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, in the first way, due to the effect of the lens, the ultrasonic attenuation is relatively large
The ultrasonic focus of the second method is relatively large, and it is not easy to concentrate
Although the third method can make the focal point smaller, the process of aligning the focal point is more complicated, and the sound field produced is very uneven

Method used

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  • Spherical cap type concave spherical surface ultrasonic transducer

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Embodiment Construction

[0013] Referring to the accompanying drawings, a spherical crown type concave spherical ultrasonic transducer of the present invention is equipped with a concave spherical piezoelectric ceramic sheet and a housing 2 . The concave spherical piezoelectric ceramic sheet is a spherical concave spherical piezoelectric ceramic sheet 1 with uniform thickness, the concave spherical surface is a thin shell structure, the working surface is concave, and the center of curvature is the geometric focus.

[0014] The spherical concave spherical piezoelectric ceramic sheet 1 is placed in the casing 2 and fixed by pressing with a pressing device. As shown in the figure, the compression device is composed of a pressure ring 3 and a coil 4, the pressure ring 3 is placed on the upper edge of the piezoelectric ceramic sheet 1, and the coil 4 is screwed on the inner wall of the shell 2 and pressed tightly on the top of the pressure ring 3 . The coil 4 presses the piezoelectric ceramic sheet 1 ont...

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Abstract

The invention relates to a spherical cap concave ultrasonic heat exchanger, which comprises a concave spherical piezoelectric ceramic sheet and frame, wherein the piezoelectric ceramic sheet is the concave spherical frame with uniform thickness whose working surface is concave; said piezoelectric ceramic sheet is mounted inside the frame to be fixed via compressing device; the center of piezoelectric ceramic sheet has round hole to mount the detector; the frame and the compressing device have fixing function, to avoid the back of piezoelectric ceramic sheet being contacted with couple liquid. The invention can avoid the defects of present technique, improve the focus property of ultrasonic wave, and reduce the sonic wave consumption, with small focus.

Description

technical field [0001] The invention relates to an ultrasonic heating device, in particular to a spherical crown type concave spherical ultrasonic transducer for treating tumors by means of ultrasonic heating. Background technique [0002] Ultrasonic heating to treat tumors is an effective treatment method developed in recent years. The ultrasound emitting portion of this treatment device comes in various forms, such as: [0003] 1. Flat piezoelectric ceramic sheet plus lens. [0004] 2. Paste several facet piezoelectric ceramic sheets on the metal member of the spherical crown type, so that the normal lines of each piezoelectric ceramic sheet converge at one point. [0005] 3. Several concave spherical piezoelectric ceramic sheets are fixed on a large ring, so that their respective focal points converge at one point to achieve secondary focusing. [0006] The above three methods have their own advantages and disadvantages, of which the disadvantages are more obvious. Fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B06B1/06
Inventor 丁星胡呈张激
Owner SHENZHEN PRO HIFU MEDICAL TECH
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