CN211724396U - Visual prosthesis device and visual prosthesis system - Google Patents

Abstract

The embodiment of the utility model discloses vision prosthetic devices and vision prosthetic systems, wherein, the host system of vision prosthetic devices produces stimulation pulse signal according to the electrode control command control stimulation pulse generation module that first communication module received, electrode array not only can receive stimulation pulse signal in order to organize the release electro photoluminescence to visual neuron, and can receive the analog neuron signal that visual neuron organized and produced, recombination signal amplification and analog-to-digital conversion module are to analog neuron signal amplification and analog-to-digital conversion, obtain digital neuron signal, host system can control first communication module and outwards transmit digital neuron signal. The visual prosthesis system comprising the in-vitro control module, the second communication module and the visual prosthesis device can receive, process and analyze the digital neuron signals, find the optimal stimulation parameters of each electrode of the visual prosthesis device, and improve the acquisition efficiency and accuracy of the optimal stimulation parameters of the electrodes.

Description

Visual prosthesis device and visual prosthesis system

Technical Field

The utility model relates to a vision false body technical field especially relates to a vision false body device and vision false body system.

Background

Visual prosthesis technology belongs to one of functional electrical stimulation. The blind person stimulation device applies specific artificial electrical stimulation to the intact part of the visual pathway to excite nerve cells and simulate the effect of natural light stimulation to enable the blind person to generate visual perception by utilizing the characteristic that most blind persons often only have lesion on one part of the visual pathway and the structure and the function of the nerve tissues of the rest part are intact. The visual perception produced by the fixed-point electrical stimulation of a single electrode is called optical illusion. The visual prosthesis system comprises a video acquisition device (usually a small-sized camera) positioned outside the human body, a video processing module, an electric stimulation coding module and a multi-electrode array implanted to a specific part of a visual passage in the human body, wherein the video acquisition device, the video processing module, the electric stimulation coding module and the multi-electrode array form a visual prosthesis on-body chip. The working principle of the visual prosthesis is as follows: real-time video images acquired by the video acquisition equipment are processed and converted into signals for driving the multi-electrode array. The multi-electrode array applies current stimulation with certain amplitude, waveform and frequency to the visual nerve tissue to excite the visual neurons, so that the patient can generate visual feeling.

Due to the different distances between different sub-electrodes and the visual neurons in the multi-electrode array, the impedance of different sub-electrodes is different, so that the minimum stimulation intensity required by different sub-electrodes to activate the adjacent visual neurons is different, and therefore, the stimulation parameters of each sub-electrode need to be optimized separately.

In the prior art, the optimization process of the electrical stimulation parameters of the electrodes of the visual prosthesis is roughly as follows: the medical staff transmits a set of continuously enhanced stimulation parameters to the visual prosthesis on-body chip, and tests which electrodes in the electrode array can enable the testee to perceive the phosphenes with 50% probability under which parameters. The healthcare selects from these parameters, setting optimal stimulation parameters for each sub-electrode in the electrode array. However, relying on the verbal description of the patient for electrode stimulation parameter optimization would consume a significant amount of time and effort on the part of the medical practitioner and the patient, since the visual prosthesis chip contains a large number of electrodes. Furthermore, the verbal description does not accurately reflect the effective range of electrode stimulation, which significantly reduces the spatial resolution of electrode stimulation, which also means that electrical stimulation is often too high, which causes heat accumulation and increases the risk of thermally damaging nerve tissue. Also, over time, contact between the body chip and the neural tissue changes, causing changes in the electrode impedance, resulting in failure of the previously determined electrical stimulation parameters, which the patient needs to regularly seek the assistance of medical personnel, further increasing the burden on medical workers and patients. Finally, when the subject is an animal, the animal cannot verbally describe the phosphenes it perceives, limiting the development of electrode stimulation parameter optimization.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a vision false body device and system can improve the degree of accuracy and the acquisition efficiency of the optimal stimulation parameter of stimulation electrode.

In one aspect, an embodiment of the present invention provides a visual prosthesis device, including a first communication module, a main control module, a stimulation pulse generation module, an electrode array, and a signal amplification and analog-to-digital conversion module, where the first communication module is connected to the main control module, an output end of the main control module is connected to an input end of the stimulation pulse generation module, an output end of the stimulation pulse generation module is connected to an input end of an electrode in the electrode array, an output end of the electrode is connected to an input end of the signal amplification and analog-to-digital conversion module, and an output end of the signal amplification and analog-to-digital conversion module is connected to an input end of the main control module; wherein:

the first communication module is used for receiving an electrode control instruction and transmitting a digital neuron signal;

the main control module is used for controlling the stimulation pulse generation module to generate a stimulation pulse signal according to the electrode control instruction;

the stimulation pulse generation module is used for generating the stimulation pulse signal according to the electrode control instruction;

the electrodes in the electrode array are used for receiving the stimulation pulse signals, releasing electrical stimulation to the visual nerve tissues to generate phosphene, and receiving simulated neuron signals generated by the visual nerve tissues;

the signal amplification and analog-to-digital conversion module is used for amplifying the analog neuron signals and carrying out digital processing to obtain the digital neuron signals.

Optionally, the main control module includes a first processor, a second processor and a data register module including a plurality of data registers, an output end of the signal amplification and analog-to-digital conversion module is connected with an input end of the first processor, an output end of the first processor is connected with an input end of the data register module, the data register module is connected with the second processor, the second processor is connected with the first communication module, the second processor is used for taking out the digital neuron signals stored in the data register and then sending the digital neuron signals to the first communication module, and the first processor is used for storing the digital neuron signals in the vacated data register.

Optionally, the main control module further includes a third processor, a parameter register module, and a fourth processor, the first communication module is connected to the parameter register module, the parameter register module is connected to the third processor, the third processor is connected to the stimulation pulse generation module, the electrode of the electrode array is connected to the fourth processor, the parameter register module is connected to the fourth processor, and the fourth processor is connected to the signal amplification and analog-to-digital conversion module.

Optionally, the stimulation pulse generation module includes a plurality of sub-stimulation pulse generation modules, the number of the sub-stimulation pulse generation modules is the same as the number of the electrodes of the electrode array, and an output end of one sub-stimulation pulse generation module is connected to an input end of one electrode of the electrode array.

Optionally, the device further includes a temperature sensor for detecting a temperature of the optic nerve tissue and/or an impedance sensor for detecting an electrode impedance of the electrode array, and an output end of the temperature sensor and an output end of the impedance sensor are respectively connected to an input end of the main control module.

Optionally, the first communication module is a wired communication module or a wireless communication module, and the wireless communication module includes a WiFi module, a bluetooth module or a ZigBee module.

On the other hand, the embodiment of the utility model provides a vision prosthesis system, including external control module, second communication module and vision prosthesis device, external control module with the second communication module is connected, the second communication module with first communication module connects, external control module be used for to first communication module sends electrode control command to and receive and handle digital neuron signal.

Optionally, the visual prosthesis system further comprises an alarm module for outputting an alarm signal, and an output end of the extracorporeal control module is connected with an input end of the alarm module.

Optionally, the alarm module includes a sound-light alarm module, an optical alarm module, or an acoustic alarm module.

Optionally, the visual prosthesis system further comprises a display module and/or an information input module, an output end of the in vitro control module is connected with an input end of the display module, and an output end of the information input module is connected with an input end of the in vitro control module.

The embodiment of the utility model provides an in visual false body device, host system produces stimulation pulse signal according to the electrode control command control stimulation pulse generation module that first communication module received, and electrode array not only can receive stimulation pulse signal in order to organize the release electro photoluminescence to visual neuron, but also can receive the simulation neuron signal that visual neuron organizes to produce, the signal amplification of reunion and analog-to-digital conversion module are to simulation neuron signal amplification and analog-to-digital conversion, obtain digital neuron signal, host system can control the first communication module and outwards transmit digital neuron signal. The visual prosthesis system comprising the in-vitro control module, the second communication module and the visual prosthesis device can receive, process and analyze the digital neuron signals, and find the optimal stimulation parameters of each electrode of the visual prosthesis device in a closed-loop feedback mode, so that the acquisition efficiency and accuracy of the optimal stimulation parameters of the electrodes are improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a visual prosthesis system according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a visual prosthetic device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a visual prosthesis system according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be understood that the terms "first," "second," and the like in the description and claims of this application and in the drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a visual prosthesis system according to an embodiment of the present invention, and fig. 2 is a schematic structural diagram of a visual prosthesis device according to an embodiment of the present invention; the visual prosthesis system comprises an in vitro control module 13, a second communication module (not shown) and a visual prosthesis device 12, the visual prosthesis device 12 comprises a first communication module 201, a master control module 203, a stimulation pulse generation module 206, an electrode array 207 and a signal amplification and analog-to-digital conversion module 205, wherein:

the extracorporeal control module 13 is connected to the second communication module, the second communication module is connected to the first communication module 201, and the extracorporeal control module 13 is configured to send an electrode control instruction to the first communication module 201, and receive and process a digital neuron signal; the first communication module 201 is connected to the main control module 203, the output end of the main control module 203 is connected to the input end of the stimulation pulse generation module 206, the output end of the stimulation pulse generation module 206 is connected to the input end of the electrode in the electrode array 207, the output end of the electrode is connected to the input end of the signal amplification and analog-to-digital conversion module 205, and the output end of the signal amplification and analog-to-digital conversion module 205 is connected to the input end of the main control module 203.

Specifically, the first communication module is configured to receive an electrode control instruction sent by the external control module 13 through the second communication module and transmit the digital neuron signal to the external control module 13 (through the second communication module), where the electrode control instruction includes a stimulation parameter of an electrode;

the main control module is used for controlling the stimulation pulse generation module to generate stimulation pulse signals according to the electrode control instruction, wherein the stimulation pulse signals can be stimulation pulse voltage signals or stimulation pulse current signals;

the stimulation pulse generation module is used for generating the stimulation pulse signal according to the electrode control instruction;

the electrodes in the electrode array are used for receiving the stimulation pulse signals, releasing electrical stimulation to the visual nerve tissues to generate phosphene, and receiving simulated neuron signals generated by the visual nerve tissues;

the signal amplification and analog-to-digital conversion module is used for amplifying the analog neuron signals and carrying out digital processing to obtain the digital neuron signals.

The vision prosthesis system in the embodiment of the utility model comprises an in-vivo implanted vision prosthesis device and an in-vitro control module, the in-vitro control module can send an electrode control command to the vision prosthesis device, the main control module in the visual prosthesis device controls the stimulation pulse generation module to generate stimulation pulse signals according to the electrode control instruction received by the first communication module, the electrode array not only can receive the stimulation pulse signals to release electrical stimulation to the visual neuron tissue, but also can receive the analog neuron signal generated by the visual nerve tissue, and then combines the signal amplification and analog-to-digital conversion module to amplify and convert the analog neuron signal to obtain the digital neuron signal, the main control module can control the first communication module to transmit the digital neuron signal to the outside, in the embodiment, the simulated neuron signals detected by the electrode array are transmitted to the in-vitro control module (through the second communication module); after the in-vitro control module processes and analyzes the digital neuron signals, the electrode control instruction can be adjusted, and finally, the stimulation parameter optimization of the closed-loop in-vivo visual prosthesis device is completed by the in-vitro control module under the weak manual supervision condition, so that the optimization efficiency and the accuracy of the optimal stimulation parameters of the electrodes are improved; the in-vitro control module carries out accurate stimulation parameter adjustment on any electrode in the in-vivo electrode array according to the digital neuron signals recorded by the visual prosthesis device, so that the rationality and effectiveness of single-electrode electrical stimulation and the accuracy of electrical stimulation are improved, and the risk of thermal injury of the electrical stimulation to nerve tissues is reduced. Because the device does not depend on the oral report of an experimental object and depends on the objective index of a digital neuron signal, the device can carry out large-scale animal in-vivo experiment on the visual prosthesis device (chip), thereby reducing the development cost of the visual prosthesis device and improving the safety and the effectiveness of the visual prosthesis device before clinical test.

Further, referring to fig. 3, fig. 3 is a schematic structural diagram of a visual prosthesis system provided by an embodiment of the present invention, the first communication module may be a wired communication module or a wireless communication module, and the wireless communication module is, for example, a WiFi module, a bluetooth module, a ZigBee module, etc., as long as wireless or wired communication between the external control module 301 and the visual prosthesis device can be achieved, which is not limited herein. Preferably, the first communication module and the second communication module are wireless communication modules, and wireless transmission is closer to clinical requirements.

Further, referring to fig. 3, the main control module includes a first processor 307, a second processor 303 and a data register module 305 including a plurality of data registers, an output terminal of the signal amplifying and analog-to-digital converting module 310 is connected to an input terminal of the first processor 307, an output terminal of the first processor 307 is connected to an input terminal of the data register module 305, the data register module 305 is connected to the second processor 303, the second processor 303 is connected to the first communication module, the second processor 303 is configured to take out the digital neuron signal stored in the data register 305 and send the digital neuron signal to the first communication module, and the first processor 307 is configured to store a new digital neuron signal in an empty data register. The first processor 307 and the second processor 303 realize transmission of digital neuron signals to the external control module by using a ping-pong mechanism, that is, the second processor 303 transmits digital neuron signal data in a part of data registers (k2 data registers) in the data register module 305 to the external control module, and the first processor 307 stores newly received digital neuron signal data in a data register (k1 data registers) which is just vacated, and realizes data access by using the ping-pong mechanism, so that data can be stored in the visual prosthesis device and transmitted to the external control module at the same time, thereby not only realizing continuous recording and transmission of data, avoiding incomplete recorded data, but also reducing the storage capacity of the data register module and reducing the volume of the visual prosthesis device.

Further, referring to fig. 3, the main control module further includes a third processor 304, a parameter register module 302, and a fourth processor 309, the first communication module is connected to the parameter register module 302, the parameter register module 302 is connected to the third processor 304, the third processor 304 is connected to the stimulation pulse generation module 306, the electrodes of the electrode array 308 are connected to the fourth processor 309, the parameter register module 302 is connected to the fourth processor 309, and the fourth processor 309 is connected to the signal amplification and analog-to-digital conversion module 310; wherein, the parameter register module 302 is configured to store an electrode control instruction, the electrode control instruction includes an electrode number of a stimulation electrode (i.e. an electrode of an electrode array that is designated to send electrical stimulation to the optic nerve tissue), stimulation parameters (amplitude, frequency, pulse width, duration) of the stimulation electrode, recording mode parameters (e.g. delay time and sampling frequency), a parameter register clear flag, an electrode number of a designated recording electrode group (i.e. an analog neuron signal of an electrode corresponding to the electrode number is processed by the designated signal amplification and analog-to-digital conversion module), the delay time is a time interval between the time when the stimulation electrode gives electrical stimulation and the time when the electrode with the designated electrode number starts recording the analog neuron signal, and the sampling frequency refers to the time interval of processing the simulated neuron signals of the electrodes with the appointed electrode numbers by the signal amplification and analog-to-digital conversion module. The third processor 304 controls the electrodes with the numbers corresponding to the electrode array 308 to emit electrical stimulation according to the electrode numbers of the stimulation electrodes and the corresponding stimulation parameters, the fourth processor 309 controls the signal amplification and analog-to-digital conversion module 310 to process the simulated neuron signals of the electrodes with the numbers corresponding to the sampling frequencies and the electrode numbers of the specified recording electrode groups according to the specified frequencies, and the parameter register clearing flag is used for clearing the data stored in the register in the parameter register module 302.

It is easy to think that the master control module can only adopt one processor to realize the functions of the first processor, the second processor, the third processor and the fourth processor as long as the processing capability of the adopted processor is strong enough.

Further, referring to fig. 3, the stimulation pulse generation module 306 includes a plurality of sub-stimulation pulse generation modules, the number of the sub-stimulation pulse generation modules is the same as the number of the electrodes of the electrode array 308, and the output end of one sub-stimulation pulse generation module is connected to the input end of one electrode of the electrode array. The sub-stimulation pulse generation module may be implemented using a micro-current stimulator chip, but is not limited to such an implementation.

Further, referring to fig. 2 and fig. 3, the apparatus further includes a sensor module 311, the sensor module 311 includes a temperature sensor 204 for detecting a temperature of the optic nerve tissue 312 and/or an impedance sensor 202 for detecting an impedance of the electrode array 308, an output terminal of the temperature sensor 204 and an output terminal of the impedance sensor 202 are respectively connected to an input terminal of the main control module 203; specifically, the output end of the temperature sensor 204 and the output end of the impedance sensor 202 are respectively connected to the input end of the first processor 307, and similarly, the first processor 307 and the second processor 303 implement storage and transmission of sensor parameters through a ping-pong mechanism, and send the sensor parameters to the extracorporeal control module 301.

Further, the visual prosthesis system may further include a display module for displaying information such as digital neuron signals, sensor parameters, optimal stimulation parameters of the electrodes, and the like, and an information input module for inputting information, an output end of the in vitro control module is connected with an input end of the display module, an output end of the information input module is connected with an input end of the in vitro control module, and the information input module may be a keyboard, a touch screen, and the like, and is used for inputting information such as electrical stimulation parameters.

In practical application, when the electrical stimulation parameters of the electrodes are optimized, the first optimization mode is a weak manual supervision optimization mode, the external control module autonomously completes the optimization of the electrical stimulation parameters according to a pre-stored program, namely the external control module is used for generating and sending electrode control instructions to the first communication module and receiving and processing digital neuron signals, the external control module processes the digital neuron signals according to the pre-stored program to judge whether the electrical stimulation parameters are the optimized electrical stimulation parameters, and the external control module continuously adjusts the electrical stimulation parameters and then judges to complete the optimization of the electrical stimulation parameters.

The working process of the in-vitro control module for optimizing the stimulation parameters of any electrode in the visual prosthesis device is as follows:

the external control module sends an electrode number and stimulation parameters corresponding to a certain stimulation electrode to the visual prosthesis device, records the electrode number of an electrode group, recording mode parameters and the like, the visual prosthesis device controls the corresponding electrode to send electrical stimulation to the visual prosthesis device according to the electrode number and the stimulation parameters of the stimulation electrode, after a period of time, an analog neuron signal of the electrode corresponding to the electrode number of the recording electrode group is obtained and processed to obtain a digital neuron signal, and finally the digital neuron signal is returned to the external control module for processing; when the stimulation parameters do not meet the preset requirements, the in-vitro control module adjusts the original stimulation parameters and then continues the judgment until the digital neuron signals corresponding to the adjusted stimulation parameters meet the preset requirements, so that the stimulation parameters of a certain electrode are optimized, and the optimal stimulation parameters of the certain electrode are obtained.

And secondly, the scheme of completely manually executing the optimization of the electrical stimulation parameters is that medical workers manually input stimulation parameters or images which are considered to be suitable by the medical workers to an in-vitro control module according to digital neuron signals and other information recorded by a specified electrode (group) under any stimulation parameters and displayed by a display module, and then the stimulation parameters or images are transmitted to the visual prosthesis device through the in-vitro control module, and the medical workers judge whether the requirements are met according to the digital neuron signals returned by the visual prosthesis device, so that the optimization of the stimulation parameters of the visual prosthesis device under the strong supervision condition is realized.

And thirdly, the optimization process of the in-vitro control module is supervised by medical care or laboratory staff between the first type and the second type, the medical care or laboratory staff can intervene or take over the execution process of the in-vitro control module at any time according to the digital neuron signals transmitted back by the visual prosthesis device, and after the states of the visual prosthesis device and the nerve tissues are confirmed, manual parameter optimization is selected or automatic optimization is continued or brand-new automatic optimization is started.

It is thus clear that utilize the utility model discloses a vision prosthesis system can be under the artifical supervision condition of arbitrary intensity, combines artificial intervention to implement by external control module, possesses the ability that greatly alleviates medical personnel and patient's burden.

Further, referring to fig. 1, the visual prosthesis system further includes an alarm module 14 for outputting an alarm signal, an output end of the external control module 13 is connected to an input end of the alarm module 14, the alarm module 14 may be an audible and visual alarm module, an optical alarm module or an acoustic alarm module, and respectively emits an audible and visual alarm signal, an optical alarm signal or an acoustic alarm signal, and when the external control module 13 determines that the received temperature exceeds a preset temperature (e.g., 37 ℃), it indicates that the temperature of the visual nerve tissue is abnormal; or when the received electrode impedance exceeds the preset impedance, the sub-stimulation pulse generation module is indicated to be abnormal or the electrode is abnormal, at the moment, the in-vitro control module 13 controls the alarm module 14 to work so as to prompt related personnel to be abnormal, avoid the permanent damage of nerve tissues caused by electric stimulation heating, and conveniently and timely eliminate faults.

It should be noted that the in vitro control module may be a single chip, a computer, or other devices with processing and control capabilities, and is not particularly limited. For the visual prosthesis device, external image acquisition equipment can be configured, and the main control module processes images or videos acquired by the image acquisition equipment to obtain stimulation parameters of the control electrode array so as to stimulate visual nerve tissues and enable the blind person to generate visual feeling.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.

Claims (10)

1. A visual prosthesis device is characterized by comprising a first communication module, a main control module, a stimulation pulse generation module, an electrode array and a signal amplification and analog-to-digital conversion module, wherein the first communication module is connected with the main control module, the output end of the main control module is connected with the input end of the stimulation pulse generation module, the output end of the stimulation pulse generation module is connected with the input end of an electrode in the electrode array, the output end of the electrode is connected with the input end of the signal amplification and analog-to-digital conversion module, and the output end of the signal amplification and analog-to-digital conversion module is connected with the input end of the main control module; wherein:

the first communication module is used for receiving an electrode control instruction and transmitting a digital neuron signal;

the main control module is used for controlling the stimulation pulse generation module to generate a stimulation pulse signal according to the electrode control instruction;

the stimulation pulse generation module is used for generating the stimulation pulse signal according to the electrode control instruction;

the electrodes in the electrode array are used for receiving the stimulation pulse signals, releasing electrical stimulation to the visual nerve tissues to generate phosphene, and receiving simulated neuron signals generated by the visual nerve tissues;

the signal amplification and analog-to-digital conversion module is used for amplifying the analog neuron signals and carrying out digital processing to obtain the digital neuron signals.

2. The visual prosthetic device of claim 1, wherein the master control module comprises a first processor, a second processor and a data register module comprising a plurality of data registers, wherein an output of the signal amplification and analog-to-digital conversion module is connected to an input of the first processor, an output of the first processor is connected to an input of the data register module, the data register module is connected to the second processor, the second processor is connected to the first communication module, the second processor is configured to fetch the digital neuron signals stored in the data registers and then send the digital neuron signals to the first communication module, and the first processor is configured to store new digital neuron signals in the emptied data registers.

3. The visual prosthetic device of claim 1, wherein the master control module comprises a third processor, a parameter register module, and a fourth processor, the first communication module is connected to the parameter register module, the parameter register module is connected to the third processor, the third processor is connected to the stimulation pulse generation module, the electrodes of the electrode array are connected to the fourth processor, the parameter register module is connected to the fourth processor, and the fourth processor is connected to the signal amplification and analog-to-digital conversion module.

4. The visual prosthetic device of claim 1, wherein the stimulation pulse generation module comprises a plurality of sub-stimulation pulse generation modules, the number of sub-stimulation pulse generation modules is the same as the number of electrodes of the electrode array, and an output of one of the sub-stimulation pulse generation modules is connected to an input of one of the electrodes of the electrode array.

5. The visual prosthetic device of any one of claims 1-4, wherein the device further comprises a temperature sensor for detecting the temperature of the visual nerve tissue and/or an impedance sensor for detecting the impedance of the electrode array, and the output terminal of the temperature sensor and the output terminal of the impedance sensor are respectively connected with the input terminal of the main control module.

6. The visual prosthetic device of any one of claims 1-4, wherein the first communication module is a wired communication module or a wireless communication module comprising a WiFi module, a Bluetooth module, or a ZigBee module.

7. A visual prosthesis system comprising an extracorporeal control module, a second communication module and the visual prosthesis device of any one of claims 1 to 6, the extracorporeal control module being connected to the second communication module, the second communication module being connected to the first communication module, the extracorporeal control module being configured to send the electrode control instructions to the first communication module and to receive and process the digital neuron signals.

8. A visual prosthesis system according to claim 7, further comprising an alarm module for outputting an alarm signal, the output of the extracorporeal control module being connected to the input of the alarm module.

9. A visual prosthesis system as claimed in claim 8, wherein said alarm module comprises an audible-visual alarm module, an optical alarm module or an acoustic alarm module.

10. A visual prosthesis system as claimed in any one of claims 7 to 9, further comprising a display module and/or an information input module, an output of the extracorporeal control module being connected to an input of the display module and an output of the information input module being connected to an input of the extracorporeal control module.

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