A transducer for ultrasonic tooth cleaning

Abstract

The invention provides an ultrasonic tooth cleaning energy transducer. The ultrasonic tooth cleaning energy transducer comprises a working tip, a variable amplitude rod, a front cover plate and a piezoelectric ceramic plate which is made of a PZT-4 piezoelectric ceramic material, wherein one end of the front cover plate is sleeved into the variable amplitude rod and is connected with the variable amplitude rod, and the piezoelectric ceramic plate is sleeved outside the other end of the front cover plate; a water receiving hole and a first connecting hole are formed in the front cover plate; a first through hole and a second through hole are respectively formed in the working tip and the center of the variable amplitude rod; and the water receiving hole, the first connecting hole, the first through hole and the second through hole are communicated with one another. According to the ultrasonic tooth cleaning energy transducer, on the one hand, a full-vibration mode is selected, water is introduced to a node of the energy transducer, and the performance of the energy transducer is less influenced; and on the other hand, a high-performance PZT-4 piezoelectric material is selected to realize low-voltage driving, so that the ultrasonic tooth cleaning energy transducer has the advantages of excellent performance, high working stability and the like.

Description

technical field [0001] The invention relates to the field of oral medical instruments, in particular to an ultrasonic tooth cleaning transducer. Background technique [0002] At present, the ultrasonic tooth cleaning transducers actually used in China have the problems of large overall handle vibration, easy heating, large impedance, and high driving voltage. As a result, the working stability of the traditional ultrasonic tooth cleaning transducer is not enough, and the continuous working time is short. After analysis, the main shortcomings are as follows: [0003] 1. The structural size of the horn is not optimized; [0004] 2. The transducer adopts the half-wave mode, which has a large impedance and is prone to heat; [0005] 3. The water passage is at the end of the transducer, and the water conduit has a great influence on the performance of the transducer. Contents of the invention [0006] In view of the above problems, the object of the present invention is to p...

AI Technical Summary

Problems solved by technology

As a result, the working stability of the traditional ultrasonic tooth cleaning transducer is not enough, and the continuous working time is short. After analysis, the main shortcomings are as follows:

[0003] 1. The structural size of the horn is not optimized;

[0004] 2. The transducer adopts the half-wave mode, which has large impedance and is easy to generate heat;

[0005] 3. The water is at the end of the transducer, and the water conduit has a great influence on the performance of the transducer

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