Cell micro-injection device and robust impedance control method thereof
A microinjection and impedance control technology, applied in the fields of biomedical engineering and precision control, can solve the problems of mechanism fatigue failure, unstable steady-state error, inability to compliant mechanism to achieve stiffness ratio, etc., to improve the success rate and reduce assembly. Error, avoid the effect of system instability
Pending Publication Date: 2021-11-02
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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The invention discloses a cell micro-injection device which comprises a connecting rod, a packaging device connected with the connecting rod, a piezoelectric actuator fixed in the packaging device, a micro-injection needle, an injector and a hub type compliant mechanism, and the two ends of the injector are connected with the packaging device and the hub type compliant mechanism respectively, the micro-injection needle is fixedly connected with the hub type compliant mechanism; the hub type compliant mechanism is provided with a reed type compliant unit used for transmitting axial vibration to the microinjection needle. According to the micro-injection device, the transverse vibration of the needle head in the micro-injection device can be reduced, and the damage to cells in the cell puncture process is reduced.
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