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Piezoelectric type multi array element high intensity focusing ultrasonic transducer and focusing method

A focused transducer and focused ultrasound technology, which is applied in ultrasonic therapy, non-electric welding equipment, treatment, etc., can solve the problems of low intensity of focused ultrasound, achieve low cost, avoid too many multi-focus piezoelectric ceramics, and install The effect of simple structure

Inactive Publication Date: 2005-09-21
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the limitation of the acoustic power of the unit transducer, its focused ultrasound intensity is relatively small

Method used

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  • Piezoelectric type multi array element high intensity focusing ultrasonic transducer and focusing method
  • Piezoelectric type multi array element high intensity focusing ultrasonic transducer and focusing method
  • Piezoelectric type multi array element high intensity focusing ultrasonic transducer and focusing method

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Embodiment Construction

[0017] Concrete constitution of the present invention is: as figure 1 As shown, a plurality of unit transducers 2 are installed in the mounting holes of the concave spherical lightweight housing 1, and the end cover 3 is placed on the upper end of the concave spherical lightweight housing 1, and the gasket 4 is used to seal the two. Concave spherical lightweight shell 1 such as figure 2 As shown, on the concave spherical lightweight shell 1, the mounting holes of the array unit focusing transducer 2 are designed, and the axes of each hole intersect at the center of the concave spherical lightweight shell; according to the empirical calculation formula of the acoustic focus focal length:

[0018] R = r 1 - C 1 C 2 - - - ...

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Abstract

The invention relates to a piezoelectric focusing ultrasonic transducer, which comprises a concave spherical lightening housing (1), a unit focusing energy converter (2), an end cap (3), a gasket (4), a connector base (5) and an insulating connector base (6). The method uses the polyvalent secondary focusing method to geometrical focus with high intensity. The device can produce the high-intensity focusing ultrasonic with prompt high pressure and temperature effect, and has small focus range and large acoustic pressure, and the system is stable, and it can be widely used in the biology, medical treatment, manufacturing and other technique fields.

Description

technical field [0001] The piezoelectric multi-element high-intensity focused ultrasonic transducer and focusing method referred to in the present invention belong to ultrasonic transducers, which can produce high-intensity focused ultrasonic with instantaneous high-temperature and high-pressure effects, and are widely used in biology, medical treatment, manufacturing and other technical fields. Background technique [0002] By applying pulsed electrical excitation to the piezoelectric transducer, the piezoelectric transducer generates pulsed ultrasonic waves. With proper focusing technology, high-intensity focused ultrasound can be formed in the focused area, which has the characteristics of instantaneous high temperature and high pressure. [0003] At present, the existing ultrasonic focusing methods include: multiple coherent focusing, multiple non-coherent focusing, phase control focusing, unit acoustic lens focusing and concave spherical chip self-focusing, etc. Howev...

Claims

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Application Information

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IPC IPC(8): A61N7/02B06B3/04B23K20/10
Inventor 汪炜刘正埙林广义董歧李为龙
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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