Controllable efficient wireless energy supply device for biologic implant

Abstract

The invention relates to a controllable high performance wireless power supply device applied to biological implantation materials, which comprises an SCM control module, a voltage conversion and amplifier module, a coil coupling transmission module and a vivo commutating and voltage-stabilizing module. The SCM control module generates PWM wave to control the output frequency and efficiency of the voltage conversion and amplifier module; the voltage conversion and amplifier module is constructed by a Class-E power amplification circuit which receives, converses and amplifies 3 to 5V direct current signals into alternating current to be output to the coil coupling transmission module; the coil coupling transmission module realizes transmission from the vitro to the vivo; the vivo commutating and voltage-stabilizing module commutates and filters alternating current and stabilizes into stable 3.3V direct current to supply power to medical instruments in the implantation materials. The device provided by the invention has small volume, adjustable frequency and high transfer efficiency of wireless alternating current, is easy to operate and realizes wireless transmission with respect to the power supply to medical implanted devices.

Description

technical field [0001] The invention relates to a device in the technical field of biomedical engineering, in particular to a controllable high-efficiency wireless energy supply device for biological implants. Background technique [0002] At present, scientists have developed more and more biomedical devices that can help patients with various body organ defects, such as cochlear implants, artificial hearts, artificial visual prostheses, etc. These devices have one thing in common, that is, they are implanted For the energy driving of these devices, the method of building batteries or introducing wires into the body was used earlier, but it is easy to cause the danger of sudden depletion of battery power or infection of body wounds, which brings great troubles to patients. [0003] Therefore, the non-contact transmission technology of electric energy emerges at the historic moment, and more and more people pay attention to it, because the non-contact transmission technology...

AI Technical Summary

Problems solved by technology

The single-ended flyback converter is controlled by the UC3842 current-mode pulse width modulator. The UC3842 chip is a single-ended isolated current-mode pulse width modulation integrated circuit. It has few external components, simple peripheral circuits, low price, and the highest operating frequency can be Up to 500kHz, can be used as a current-mode pulse width modulator, but its input voltage is relatively large

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