Visual prosthesis wireless transmission system with self-adaptive power regulation function and visual prosthesis wireless transmission method

Abstract

The invention discloses a self-adaptive power wireless transmission system and a self-adaptive power wireless transmission method which are used for visual prosthesis; the system comprises a simulator power prediction and regulation module, a signal modulation module, a radio frequency transmitting module, a radio frequency receiving module, an energy recovery module and a data demodulation module. The simulator power prediction and regulation module predicts energy that a nerve micro stimulator of the visual prosthesis works according to a data code according to the data code of an image that the visual prosthesis acquires, regulates the transmitting power of the radio frequency transmitting module accordingly, and predicts the time required for completing the regulation. The signal modulation module is used for modulating the data code and command the radio frequency transmitting module to transmit the modulated data code and the required energy to the radio frequency receiving module after the time; and the radio frequency receiving module transmits the received data code to the data demodulation module to demodulate, and transmits the received energy to the energy recovery module so as to supply energy for the nerve micro stimulator.

Description

technical field [0001] The invention relates to the field of biomedical engineering, in particular to a power adaptive wireless transmission system and method for implantable visual prosthesis. Background technique [0002] A visual prosthesis is an implantable medical device that helps patients with fundus diseases restore visual function. The visual prosthesis collects visual images through an external image sensor (image acquisition module). After converting the viewing angle and optimizing the image, the key information of the image is extracted for data encoding, and the encoded signal is emitted by the radio frequency transmission module, and then passed through the radio frequency in the body. The receiving module receives the signal, and conducts corresponding electrical stimulation to the retina, optic nerve or visual cortex through the implanted neural micro-stimulator, and induces phosphenes in the visual cortex of the human brain to allow patients to produce visu...

AI Technical Summary

Problems solved by technology

It can be seen that as the number of stimulation channels of the visual prosthesis continues to increase, the peak power consumption of the implanted multi-channel neural microstimulator will also increase greatly. However, the capacity of the external power supply is limited. Problems to be solved urgently in wireless transmission system of prosthesis

[0004] At present, most of the various schemes on how to improve the energy utilization rate of the wireless transmission system of the visual prosthesis focus on optimizing the conversion efficiency of the power amplifier of the radio frequency transmission module, and the efficiency improvement effect is limited.

Other solutions have problems such as unstable energy transmission efficiency, low power amplifier voltage, and response lag between signal reception and transmission.

It can be seen that the current schemes to improve the energy utilization rate of the wireless transmission system of the visual prosthesis are not suitable for the actual use of the visual prosthesis

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