High-intensity focused ultrasonic transducer

Abstract

The present invention discloses a high-intensity focused ultrasonic transducer. The high-intensity focused ultrasonic transducer comprises a transducer support and focused piezoelectric sheets, the transducer support is of an integrally formed structure, the focused piezoelectric sheets are arranged in the transducer support in a gluing mode, positioning columns are arranged inside the transducersupport and comprise outer positioning protrusions and inner positioning protrusions, inner ring glue grooves are formed between the outer positioning protrusions and the inner positioning protrusions, positioning surfaces are formed at top ends of the outer positioning protrusions, and gaps are reserved between outer surfaces of the inner positioning protrusions and inner side surfaces of inner rings of the focused piezoelectric sheets to form inner ring glue injection openings. The support is only needed to complete positioning and supporting of the piezoelectric sheets, and the high-intensity focused ultrasonic transducer is simple to operate and also easy to ensure precision; then negative electrode leads are led out from front surfaces through wiring grooves, so that reliability of the leads is improved; and a gluing sealing method is sued for sealing, soft elasticity of glue is used, stability of ultrasound output is guaranteed, internal stress of piezoelectric ceramics is also reduced, and the piezoelectric ceramics are prevented from brittle failure.

Description

technical field [0001] The invention relates to a high-intensity focused ultrasonic transducer, which belongs to the field of medical equipment. Background technique [0002] With the continuous development of ultrasound technology and the continuous improvement of medical level, high-intensity focused ultrasound diagnosis and treatment system is developing rapidly in the field of precise non-invasive treatment. The working method of the power ultrasonic device is to emit focused power ultrasonic waves from the outside of the human body to the human body, forming a large energy concentration in a specific area of ​​the human body to change the biological characteristics of the tissue in the area, and to achieve the purpose of treating diseases. The existing high-intensity focused ultrasound is generally a spherical self-focusing single-channel ultrasonic transducer, and the piezoelectric ceramic is a single spherical crown or a multi-piece spliced ​​spherical crown to achiev...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is mainly to solve the problems of existing transducers with many assembly steps, large cumulative assembly errors, cumbersome lead wires, and risky contact reliability, and to provide an integrated high-intensity focused ultrasonic transducer. Ultrasonic transducers only need a bracket to complete the positioning and support of the piezoelectric sheet, which is simple to operate and easy to ensure accuracy; then lead the negative lead from the front through the wiring trough to improve the reliability of the lead; the sealing method is sealed with glue , use the soft elasticity of the glue to ensure the stability of the sound output, and reduce the internal stress of the piezoelectric ceramics to prevent the piezoelectric ceramics from brittle fracture

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