Radio frequency signal detection device with detection coil and retina stimulator

Abstract

The invention discloses a radio frequency signal detection device with a detection coil. The radio frequency signal detection device is used for a retina stimulator comprising an implantation device and in vitro equipment with a transmitting coil. The radio frequency signal detection device is characterized by comprising a resonance circuit, a demodulation circuit, a comparison circuit and a processing module, wherein through the detection coil, the resonance circuit is used for receiving radio frequency signals generated by the implantation device, the radio frequency signals contain carrierwave signals and baseband signals, and the frequency of the carrier wave signals is larger than the frequency of the baseband signals; the demodulation circuit is used for extracting baseband signalsfrom the radio frequency signals; the comparison circuit is used for comparing the baseband signals with reference signals and a comparison result is obtained; and the processing module is used for monitoring the radio frequency signals based on the comparison result. According to the radio frequency signal detection device disclosed by the invention, the radio frequency signals generated by the implantation device can be effectively monitored.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a radio frequency signal detection device with a detection coil and a retinal stimulator. Background technique [0002] The formation of normal vision is that the photoreceptor cells on the retina in the eyeball convert external light signals into visual signals. Visual signals reach the cerebral cortex via bipolar cells and ganglion cells, thereby forming light perception. However, in life, the whole pathway is blocked due to retinal diseases such as RP (retinitis pigmentosa), AMD (age-related macular degeneration), etc., resulting in decreased vision or blindness. [0003] In order to restore partial vision to patients, retinal stimulator technology came into being. Retinal stimulator technology uses electrical current to stimulate nerves that are still intact, allowing the brain to pick up the signal and think the senses are still working. [0004] With the research and dev...

AI Technical Summary

Problems solved by technology

Due to the limitation of the volume of the implanted device, the antenna area in the implanted device is often unable to match the antenna area of ​​the external transmitting device, and the transmitting power of the implanted device is small, resulting in the induction simulation detected by the external transmitting device. The signal is small and the accuracy is not high, so that the analog signal generated by the implanted device is often not accurately detected by the external emission device

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