Injectable piezoelectric transducer, injecting device and nerve stimulation system and method

Abstract

The invention relates to the technical field of medical devices, in particular to an injectable piezoelectric transducer, an injecting device and a nerve stimulation system and method. The piezoelectric transducer comprises a piezoelectric element assembly used for receiving an ultrasonic signal and converting the received ultrasonic signal into a piezoelectric signal, a signal modulation circuitconnected with the piezoelectric element assembly and used for modulating the piezoelectric signal into a stimulation electric signal with a preset waveform and a preset voltage, a shell used for packaging the piezoelectric element assembly and the signal modulation circuit, and a stimulation electrode mounted on the surface of the shell, connected with the signal modulation circuit and used for applying the stimulation electric signal to a target area of a target object for stimulation, wherein the cross section of the injectable piezoelectric transducer along the first axis is in irrotational axial symmetry, and at least part of the piezoelectric element assembly is arranged on the side, close to a first surface, in the injectable piezoelectric transducer. According to the injectable piezoelectric transducer, the injecting device and the nerve stimulation system and method, energy can be wirelessly and efficiently supplied to the injectable piezoelectric transducer through ultrasonicwaves. 本公开是关于一种可注射式压电换能器、注射装置、神经刺激系统及方法，涉及医疗器械技术领域。该压电换能器包括：压电元件组件，用于接收超声波信号并将所接收到的超声波信号转换成压电信号；信号调制电路，与压电元件组件连接，用于将压电信号调整为预设波形和预设电压的刺激电信号；外壳，用于封装压电元件组件及信号调制电路；以及刺激电极，安装于外壳表面且与信号调制电路连接，用于将刺激电信号施加到目标对象的目标区域进行刺激；其中，可注射式压电换能器沿第一轴的横截面是非旋转轴对称的，压电元件组件至少部分设置于可注射式压电换能器内靠近第一表面的一侧。本公开能够实现对可注射式压电换能器采用超声波无线高效地供应能量。