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High-intensity focusing ultrasonic transducer array

A transducer array, focused ultrasound technology, applied in the directions of sounding equipment, ultrasonic therapy, instruments, etc., can solve the problems of limited focus movement range, high technical difficulty, poor work flexibility, etc., to overcome the limited focus movement range and working range. Flexible, low-cost effects

Inactive Publication Date: 2007-07-04
RONGHAI SUPERSONIC MEDICINE EN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The two focusing methods of curved surface focusing and acoustic lens focusing generally can only form a single focal point with a fixed position after focusing, and the work flexibility is poor; phased focusing can focus the ultrasonic energy radiated by each array element in the preset focal area to achieve focus Intensity and position movement, but in actual use, the manufacturing process of the phase-controlled focusing ultrasonic transducer array is demanding, the technical difficulty is difficult to realize, and the focal point movement range is limited, which is greatly affected by the ultrasonic path, and it is not easy to use. very convenient
At the same time, for lesions that need to treat large areas, the ultrasonic transducers of the above three focusing methods are not suitable

Method used

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Embodiment 1

[0029] This embodiment is an embodiment in which the high-intensity focused ultrasound transducer array of the present invention is used to realize multi-point therapy.

[0030] As shown in Figure 1, the supporting plate 1 is an irregular body with several small holes discretely distributed, and the array element 2 is embedded in the small hole, and the small hole is slightly larger than the size of the array element 2. The supporting plate is made of rigid material, and each The array elements 2 are respectively connected to their own driving devices through signal lines 3 .

[0031] When using the high-intensity focused ultrasound transducer array of this embodiment to treat lesions, first select the array element 2 that needs to participate in the treatment, and start the driving device of the selected array element at the same time, so that each array element 2 is respectively focused on the lesion . Select several array elements, several focal points will be formed on th...

Embodiment 2

[0034] This embodiment is an embodiment in which the high-intensity focused ultrasound transducer array of the present invention is used to realize linear scanning therapy.

[0035] As shown in Figures 2 and 3, the supporting plate 1 is a flat plate with 7 rows×7 columns of identical small holes distributed along the X and Z directions, and the array element 2 is embedded in the small holes. The array element 2 adopts planar piezoelectric ceramics, the diameter of the array element 2 can be selected from 1 mm to 100 mm, and the diameter of the small hole is slightly larger than the diameter of the array element 2 . The support plate 1 is made of silicon rubber, and each array element 2 is connected to its own driving device through signal lines 3 . The technical parameters of each array element are the same, and its focal length can be selected from 1mm to 200mm, depending on the situation.

[0036] When using the high-intensity focused ultrasound transducer array of this emb...

Embodiment 3

[0039] This embodiment is an embodiment in which the high-intensity focused ultrasound transducer array of the present invention is used to realize curved-surface scanning therapy.

[0040] As shown in Figures 4 and 5, the supporting plate 1 is spherical with several identical small holes, and the small holes are distributed on the supporting plate according to certain rules, such as concentric circles, straight lines, and curves. An element is respectively embedded in each small hole. The array element 2 adopts arc-shaped piezoelectric ceramics. The diameter of the array element 2 can be selected from 1mm to 100mm. The diameter of the small hole is slightly larger than that of the array element 2. The technical parameters of each array element 2 are the same.

[0041] When the high-intensity focused ultrasound transducer array of this embodiment is used to treat the lesion, the driving device of the selected array element 2 is started, and each array element is focused on the...

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Abstract

The invention involves a high-intensity focused ultrasound transducer array which includes a number of its elements, driven device of the element and pallets with a number of holes, each element embed in holes, and each element is connected with a separated driving device, driven devices can make each element focus on different space points. The element points joining treatment can make the multiple scanning treatments, linear scanning treatment or curve scanning treatment. The invention has simple construction and flexible focus position; it is suitable for the treatment of larger regional focus particularly.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic treatment, and relates to a high-intensity ultrasonic treatment system, in particular to a high-intensity focused ultrasonic transducer array. Background technique [0002] The ultrasonic transducer is one of the key components of the ultrasonic therapy system. Using its penetrability and focusability, the emitted low-intensity ultrasonic waves are coupled through the medium, enter the human tissue through the skin, and focus or converge to a spatial point. A focal point with extremely high sound intensity is formed, which causes a rapid temperature rise (higher than 60°C) in the focal point, coupled with its cavitation effect (that is, strong ultrasound produces fog-like bubbles in the liquid, and its formation and disappearance can be Extremely high temperature and pressure are generated, which severely damages the tissue) and mechanical oscillations destroy the tissue at the focal point. By...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N7/02A61N7/00A61B17/00G10K11/34B06B3/04
Inventor 燕思源汪龙
Owner RONGHAI SUPERSONIC MEDICINE EN
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