Single transducer probe for supersonic tumor curing instrument

Abstract

The present invention relates to a single transducer probe for high-strength focusing supersonic tumor therapy instrument. The probe includes piezoelectric crystal installed in the ring casing and inversely pressed clamping ring to form one reflecting cavity in between. It has outer surface of the piezoelectric crystal joined to the casing via the earthing line and the inner surface of the piezoelectric crystal joined to the HF great-power signal source via the signal line. It can reflect inversely transmitted ultrasonic wave energy regularly to increase the forwards transmitted energy, and this raises the utilization of the transducer, reduces the heat loss of the transducer, saves heat radiator, avoids the interference on the ultrasonic field caused by multiple reflection, refraction and scattering, and raises the curative effect of the therapy instrument.

Description

technical field [0001] The invention relates to a transducer probe, in particular to a transducer single probe used in a high-intensity focused ultrasound tumor treatment machine. Background technique [0002] The high-intensity focused ultrasound tumor therapy machine is a cutting-edge device that is in the development stage and is more effective in treating tumors. It needs multiple transducers and a single probe to emit ultrasound along different angles to form an ultrasound field. The working principle of the transducer is as follows figure 1 As shown, it generates ultrasonic waves by piezoelectric crystal 2, and its total energy is divided into P transmitted in the positive direction 1 and P transmitted in the opposite direction 2 , and P 1 =P 2 . The structure of the existing transducer single probe is as follows: figure 2 As shown, the piezoelectric crystal 2 is bonded on the metal backing 9 through the adhesive layer 8, wherein the ultrasonic energy P transmit...

AI Technical Summary

Problems solved by technology

The structure of the existing transducer single probe is as follows: figure 2 As shown, the piezoelectric crystal 2 is bonded on the metal backing 9 through the adhesive layer 8, wherein the ultrasonic energy P transmitted in the positive direction 1 It can be used, but part of the ultrasonic energy transmitted in the opposite direction is absorbed by the adhesive and the metal backing, causing a large amount of unnecessary heat energy, and part of it is absorbed by the piezoelectric crystal, the adhesive and the metal backing. Secondary reflection, refraction and scattering, this multiple reflection, refraction and scattering not only cause waste of energy, but also disturb the field structure of the forward transmission of ultrasonic waves, which brings hidden dangers to the medical effect

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