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Transducer array for high-intersity focusing ultrasonic tumor treatment

A transducer array and focused ultrasound technology, applied in ultrasonic therapy, treatment and other directions, can solve the problem of not having too many transducer elements, and achieve a small area, easy to achieve consistency, and good focused sound field characteristics. Effect

Active Publication Date: 2004-01-28
SHANGHAI JIAO TONG UNIV +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a transducer array for high-intensity focused ultrasound tumor therapy, which can meet the requirements of forming a sound field characteristic similar to that of a large-aperture focusing transducer and overcome the large-aperture focused transducer array. The concave spherical thin-shell piezoelectric ceramic elements required by the aperture unit transducer are difficult to manufacture, and the number of transducer array elements can not be too large, avoiding the problems caused by a large number of array elements mosaiced to form a concave spherical focusing transducer array. Consistency, stability, complexity and other issues, with high engineering reliability and performance / price ratio

Method used

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  • Transducer array for high-intersity focusing ultrasonic tumor treatment
  • Transducer array for high-intersity focusing ultrasonic tumor treatment
  • Transducer array for high-intersity focusing ultrasonic tumor treatment

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Embodiment Construction

[0014] Such as figure 1 , Figure 2 and image 3 As shown, the present invention is composed of a matching layer 1 and a piezoelectric ceramic sheet 2. The matching layer 1 is an acoustic radiation layer with a uniform thickness of a concave spherical shell and bowl shape. All piezoelectric ceramic sheets 2 are glued on the same matching layer 1. On the outer surface, a plurality of the same piezoelectric ceramic sheets 2 form a large-aperture co-concave spherical tightly mosaic transducer array 3.

[0015] The piezoelectric ceramic sheets 2 of the entire transducer array 3 are distributed in the shape of a spherical table divided evenly by a meridian. The radius of curvature of the inner surface is equal to the radius of curvature of the outer surface of the matching layer, and they are closely spliced ​​to form a complete and continuous common focusing radiation surface. The radius of curvature, thickness, shape and size of the electroceramic sheet 2 are the same, and have a clos...

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Abstract

The invention is a kind of transverter array in high-intensity focusing supersonic tumour treat. The invention is made up of matching layer and piezoelectricity chinaware pieces. The matching layer is a even bowl sound radiating layer, all the piezoelectricity chinaware pieces are stuck on the outer surface of the same matching layer, the piezoelectricity forms the transverter array. The invention has a high focusing sound-intensity ratio and sound speaking feature; the cost is low; the structure is simple, and the stability and the reliability are enhanced.

Description

Technical field [0001] The invention relates to a transducer array, in particular to a transducer array for high-intensity focused ultrasound tumor treatment, belonging to the field of medical equipment. Background technique [0002] Ultrasonic transducer or transducer array is the core component of high-intensity focused ultrasound tumor treatment system. It can convert electrical energy into ultrasonic energy and focus it to form a high-intensity focus area or focal spot, generate high temperature in the target tissue (tumor), and kill cancer cells. The quality of its performance is directly related to the therapeutic effect, safety and reliability, and is of great significance. The usual HIFU focusing transducer system is divided into two types: unit transducer and multi-element transducer array. There are two types of unit transducers: lens type and curved self-focusing type. The former uses a large-aperture planar disc piezoelectric ceramic transducer and a structure-borne a...

Claims

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Application Information

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IPC IPC(8): A61N7/02
Inventor 寿文德钱德初沈祺茂耿晓鸣石珍龙
Owner SHANGHAI JIAO TONG UNIV
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