Depth dynamic focusing acoustic lens device and method based on cascade acoustical holography

By adopting a deep dynamic focusing acoustic lens device based on cascaded acoustic holography in ultrasonic medical diagnosis and treatment, the problem of insufficient acoustic energy coupling and acoustic holographic phase plates in the prior art can only achieve a single target sound field, and high resolution and high efficiency multi-planar imaging and depth-adjustable medical diagnosis and treatment are achieved.

CN119715802AActive Publication Date: 2025-03-28TAIZHOU ZHISHENG MANUFACTURING CO LTD
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Patent Information

Application Number
CN202510217642.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-26
Publication Date
2025-03-28
Estimated Expiration
2045-02-26

AI Technical Summary

Technical Problem

In the existing ultrasonic medical diagnosis and treatment technology, the focus acoustic lens has a complex structure, a large thickness, and only one scanning plane exists, resulting in insufficient coupling of sound energy and reducing the utilization rate of sound energy; at the same time, the existing acoustic holographic phase plates can only achieve a single target sound field, and lack holographic phase plates and device methods with high resolution.

Method used

Using a deep dynamic focusing acoustic lens device and method based on cascading acoustic holography, the dynamic focusing acoustic lens cascade structure of two acoustic holography phase plates with relative positions is realized to achieve a dynamic focusing sound field with adjustable depth, improve the freedom of reconstruction of the acoustic holography phase plate, and is applied in multi-plane tomography or different depth medical diagnosis and treatment.

Benefits of technology

The focused sound field dynamically changes along the depth in the measured component is realized, the resolution and efficiency of target imaging are improved, and multi-plane scanning imaging and medical diagnosis and treatment applications at different depths are supported.

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Abstract

The invention discloses a depth dynamic focusing acoustic lens device and method based on cascade acoustical holography. Comprising a dynamic focusing acoustic lens cascading structure which is arranged in a liquid filling cavity and is mainly formed by cascading two acoustic holographic phase plates in the axial direction, one acoustic holographic phase plate is kept fixed, the other acoustic holographic phase plate moves freely, and dynamic movement of a focus in the depth direction is achieved through axial movement and circumferential rotation; each phase holographic plate is composed of a plurality of microstructure units with different thicknesses in a close array mode, the two sides of each phase holographic plate are concave-convex and flat, and the concave-convex planes face the interior of the cavity. According to the invention, dynamic sound energy focusing can be simply and conveniently realized at a plurality of positions, so that detection and imaging of a detected object on different planes are realized, and the detection efficiency is greatly improved; when in use, the structure can be directly and tightly attached to the surface of a conventional ultrasonic transducer and the surface of a measured component, and scanning and medical treatment of different plane targets can be achieved through simple movement and rotation between holographic plate components in the structure.
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