Implantable electrophysiological signal acquisition device, receiving device and system

Abstract

The utility model discloses an implantable electrophysiological signal acquisition device, an implantable electrophysiological signal receiving device and an implantable electrophysiological signal system, compared with a traditional radio physiology acquisition device, an SLE wireless transceiver chip is respectively arranged in the implantable electrophysiological signal acquisition device and the externally arranged receiving device, so that wireless data transmission of the electrophysiological signal acquisition device is realized; the characteristic of low power consumption is favorable for reducing the power consumption of the whole machine so as to reduce the heating of equipment and reduce the risk of thermal injury of an implanted device to a living body; the technical characteristics of high speed and strong anti-interference capability can improve the wireless transmission rate of the equipment, further, the channel number and sampling rate of the acquisition device can be expanded, and the working precision and efficiency of the equipment and the system can be enhanced; the low-delay characteristic can enhance the real-time performance of system work and improve the use experience.

Description

Technical Field

[0001] This utility model belongs to the field of biomedical technology, and more specifically, relates to an implantable electrophysiological signal acquisition device, receiving device and system. Background Technology

[0002] Electrophysiological signals are manifestations of electrical activity within a living organism, and they are significant in both physiological and pathological states. For example, electroencephalogram (EEG) signals reflect the functional state of the brain and are often used to study brain information processing and diagnose neurological diseases; electromyographic (EMG) signals reflect muscle function and neuromuscular idle state; and electrocardiogram (ECG) signals reflect cardiac function and are an important indicator of heart disease.

[0003] Given the crucial function of electrophysiological signals, devices for monitoring and collecting these signals have been a hot topic in the medical and research fields, especially implantable electrophysiological signal collection devices. These devices minimize interference with normal activities and have significant applications in medical diagnostics and medical devices. For example, implantable electroencephalogram (EEG) signal collection devices are important components of brain-computer interfaces (BCIs). As the direct interface between the human brain and external devices, BCIs establish a pathway between the brain's thought processes (neuronal impulses) and the behavior of external devices. One of the most critical aspects of this pathway is acquiring EEG signals from relevant brain regions. EEG signals are acquired using signal acquisition devices capable of collecting weak electrophysiological signals. Because EEG signals are relatively weak, fully implantable EEG acquisition devices are chosen for more accurate and effective acquisition, and the acquired data is wirelessly transmitted to a processor. Other physiological signal collection devices are similar; the wireless transmission of data to a processor in implantable physiological signal acquisition devices significantly improves the user experience, even for extended periods of time.

[0004] Two crucial parameters of electrophysiological signal acquisition devices—the number of channels and the sampling rate—determine the bandwidth requirements for wireless transmission. Higher sampling rates and a higher number of channels necessitate higher wireless communication speeds. With the development and application of electrophysiological signals, the data volume and transmission requirements for these signals are also increasing.

[0005] Wireless transmission of electrophysiological signal data, especially EEG data, currently employs two main communication methods: Bluetooth BLE and proprietary protocols based on the MICS band (402MHz-405MHz). The former has been widely used in short-range wireless communication, with numerous market applications and products laying the foundation for its deployment in the brain-computer interface field. However, the speed of the relatively mature Bluetooth BLE solution has reached its bottleneck, which undoubtedly cannot meet the high channel count or high sampling rate requirements of EEG acquisition devices. The MICS band is a dedicated band allocated by the US FCC for medical implantable systems. Transmission in the human body environment has less signal loss compared to 2.4GHz. However, there are currently very few mature wireless solutions based on the MICS band, and the few existing solutions have relatively low speeds, similarly failing to meet the high data bandwidth requirements of implantable devices. Utility Model Content

[0006] In view of the above-mentioned defects or improvement needs of the existing technology, this utility model provides an implantable electrophysiological signal acquisition device, receiving device and system. Its purpose is to use a low-power, high-bandwidth data transceiver chip to realize the implanted electrophysiological signal acquisition device and the external receiving device, thereby solving the technical problem that the existing implantable electrophysiological signal acquisition system cannot meet the long-term high data bandwidth transmission requirements of implantable electrophysiological signals.

[0007] To achieve the above objectives, according to one aspect of the present invention, an implantable electrophysiological signal acquisition device is provided, which includes an electrode array unit, an electrophysiological acquisition chip, an implantable main controller, an implantable SLE wireless transceiver chip, and an implantable antenna.

[0008] The electrode array unit is used to pick up electrophysiological signals and is connected to the input terminal of the electrophysiological acquisition chip;

[0009] The electrophysiological acquisition chip has its control terminal connected to the implanted main controller, and is used to output electrophysiological data based on the electrophysiological signals at the input terminal and the main control signals at the control terminal.

[0010] The implanted SLE wireless transceiver chip has its control terminal connected to the implanted main controller, which is connected to the implanted antenna to modulate electrophysiological data according to the Starflash Low Power Access Technology protocol and transmit it through the implanted antenna.

[0011] Preferably, in the implantable electrophysiological signal acquisition device, the implanted antenna receives external signals;

[0012] The implanted SLE wireless transceiver chip demodulates external signals according to the StarFlash Low Power Access Technology protocol and sends them to the implanted main controller.

[0013] Preferably, in the implantable electrophysiological signal acquisition device, the data output terminal of the electrophysiological acquisition chip is connected to the implantable main controller and / or the implantable SLE wireless transceiver chip.

[0014] Preferably, the implantable electrophysiological signal acquisition device further includes sensors connected to the implantable main controller; the sensors include temperature sensors, pressure sensors and / or leakage monitoring sensors.

[0015] Preferably, the implantable electrophysiological signal acquisition device includes an implantable power management module. The output of the implantable power management module is connected to the electrophysiological acquisition chip, the implantable main controller, and the implantable SLE wireless transceiver chip. The input of the implantable power management module is connected to a power receiving coil and / or a battery.

[0016] According to another aspect of the present invention, an external electrophysiological signal receiving device is provided, which includes an external antenna, an external SLE wireless transceiver chip, an external main controller, and a data interface.

[0017] The external SLE wireless transceiver chip has its control terminal connected to the external main controller and its external antenna connected to the external antenna to demodulate the signal received by the external antenna into electrophysiological data output according to the Star Flash Low Power Access Technology Protocol.

[0018] The data interface is connected to the main controller and is used to transmit electrophysiological data for backend processing.

[0019] Preferably, in the external electrophysiological signal receiving device, the external main controller generates a control signal;

[0020] The external SLE wireless transceiver chip modulates the control signal into an external signal according to the StarFlash Low Power Access Technology protocol and transmits it through an external antenna.

[0021] Preferably, in the external electrophysiological signal receiving device, the data output terminal of the external SLE wireless transceiver chip is connected to the main controller and / or the data interface.

[0022] Preferably, the external electrophysiological signal receiving device includes an external power management module, the output of which is connected to a power transmitting coil, an external main controller, and an external SLE wireless transceiver chip.

[0023] According to another aspect of the present invention, an implantable electrophysiological signal acquisition system is provided, including an implantable electrophysiological signal acquisition device and an external electrophysiological signal receiving device provided by the present invention.

[0024] In summary, compared with the prior art, the above-described technical solution conceived by this utility model can achieve the following beneficial effects:

[0025] The implantable electrophysiological signal acquisition device, receiving device, and system provided by this utility model, compared with traditional wireless electrophysiological acquisition devices, place the SLE wireless transceiver chip in the implantable electrophysiological signal acquisition device and the externally placed receiving device respectively, realizing wireless data transmission of the electrophysiological signal acquisition device. Its low power consumption helps to reduce the overall power consumption of the device, thereby reducing the heat generation of the device and reducing the risk of thermal damage to the organism caused by the implanted device. The high speed and strong anti-interference ability can improve the wireless transmission rate of the device. Furthermore, it can expand the number of channels and sampling rate of the acquisition device, enhancing the working accuracy and efficiency of the device and system. The low latency characteristic can enhance the real-time performance of the system and improve the user experience. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the electrical structure of the implantable electrophysiological signal acquisition system provided in Embodiment 1 of this utility model;

[0027] Figure 2 This is a schematic diagram of the electrical structure of the implantable electrophysiological signal acquisition system provided in Embodiment 2 of this utility model. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0029] The implantable electrophysiological signal acquisition system provided by this utility model includes an implantable electrophysiological signal acquisition device and an external electrophysiological signal receiving device disposed outside the body.

[0030] The external electrophysiological signal receiving device includes an electrode array unit, an electrophysiological acquisition chip, an implanted main controller, an implanted SLE wireless transceiver chip, an implanted antenna, a sensor, and an implanted power management module.

[0031] The electrode array unit is used to pick up electrophysiological signals and is connected to the input terminal of the electrophysiological acquisition chip;

[0032] The electrophysiological acquisition chip has its control terminal connected to the implanted main controller, and is used to output electrophysiological data based on the electrophysiological signals at the input terminal and the main control signals at the control terminal.

[0033] The implanted SLE wireless transceiver chip has a control terminal connected to the implanted main controller and an implanted antenna. It modulates electrophysiological data according to the StarSpark Low Power Access (SSLA) protocol and transmits it through the implanted antenna. Furthermore, the implanted SLE wireless transceiver chip demodulates external signals according to the SLA protocol and transmits them to the implanted main controller. The data output terminal of the electrophysiological acquisition chip is connected to the implanted main controller and / or the implanted SLE wireless transceiver chip. Electrophysiological data is transmitted from the electrophysiological acquisition chip to the implanted SLE wireless transceiver chip via the main controller, or directly to the implanted SLE wireless transceiver chip.

[0034] The implanted antenna communicates wirelessly in full-duplex with the external electrophysiological signal receiving device, transmitting electrophysiological data modulation signals and receiving external signals.

[0035] The sensor is connected to the implanted main controller; the sensor includes a temperature sensor, a pressure sensor and / or a leakage monitoring sensor, used to synchronously collect corresponding physiological data, and can generate control signals through the implanted main controller, or the main controller can transmit the corresponding physiological data to the implanted SLE wireless transceiver chip, and then wirelessly forward it to the receiving device through the antenna.

[0036] The output of the implanted power management module is connected to the electrophysiological acquisition chip, the implanted main controller, and the implanted SLE wireless transceiver chip for power supply. The input of the implanted power management module is connected to the power receiving coil and / or battery to obtain electrical energy.

[0037] The external electrophysiological signal receiving device includes an external antenna, an external SLE wireless transceiver chip, an external main controller, a data interface, and an external power management module.

[0038] The external SLE wireless transceiver chip has a control terminal connected to an external main controller and an external antenna. It demodulates the signal received by the external antenna into electrophysiological data output according to the StarSpark Low Power Access Technology protocol. Furthermore, the external SLE wireless transceiver chip modulates the control signal into an external signal according to the StarSpark Low Power Access Technology protocol and transmits it through the external antenna. The data output terminal of the external SLE wireless transceiver chip is connected to the main controller and / or a data interface.

[0039] The external main controller generates control signals;

[0040] The data interface is connected to the main controller and is used to transmit electrophysiological data for backend processing.

[0041] The output of the external power management module is connected to the power transmitting coil, the external main controller, and the external SLE wireless transceiver chip.

[0042] The following is an example:

[0043] Example 1

[0044] The implantable electrophysiological signal acquisition system provided in this embodiment is a brain-computer interface for monitoring electroencephalogram (EEG) signals, and its electrical structure is as follows: Figure 1 As shown, it includes an implantable electrophysiological signal acquisition device and an external electrophysiological signal receiving device disposed outside the body.

[0045] The implantable electrophysiological signal acquisition device includes an electrode array unit, an electrophysiological acquisition chip, an implantable main controller, an implantable SLE wireless transceiver chip, an implantable antenna, a sensor, and an implantable power management module.

[0046] The electrode array unit is used to pick up electrophysiological signals and is connected to the input terminal of the electrophysiological acquisition chip;

[0047] The electrophysiological acquisition chip has its control terminal connected to the implanted main controller, and is used to output electrophysiological data based on the electrophysiological signals at the input terminal and the main control signals at the control terminal, so as to realize data acquisition.

[0048] The implanted SLE wireless transceiver chip is used to achieve wireless data transmission. It utilizes StarFlash SLE short-range wireless communication technology to wirelessly transmit EEG data from the implanted device to an external receiving device. The transmitted data includes EEG signal data, temperature information, and the operating status (abnormal information, etc.) of the in-body device. Data received from the external electrophysiological signal receiving device includes control commands and device status acquisition commands. Its control terminal is connected to the implanted main controller and to the implanted antenna. The data to be transmitted is modulated according to the StarFlash low-power access technology protocol and transmitted through the implanted antenna. Furthermore, the implanted SLE wireless transceiver chip demodulates the received external signals according to the StarFlash low-power access technology protocol and sends them to the implanted main controller. In this embodiment, the data output terminal of the electrophysiological acquisition chip is connected to the implanted main controller. Electrophysiological data is transmitted from the electrophysiological acquisition chip to the implanted SLE wireless transceiver chip through the main controller. The main controller buffers data when necessary.

[0049] The implanted antenna communicates wirelessly in full-duplex with the external electrophysiological signal receiving device, transmitting electrophysiological data modulation signals and receiving external signals.

[0050] The sensor is connected to the implanted main controller; the sensor includes a temperature sensor, a pressure sensor and / or a leakage monitoring sensor, used to synchronously collect corresponding physiological data and / or to monitor the status of the implanted electrophysiological signal acquisition device. The implanted main controller generates control signals to control the device, and transmits the corresponding physiological data to the implanted SLE wireless transceiver chip, and then wirelessly forwards it to the receiving device through the antenna.

[0051] The output of the implanted power management module is connected to the electrophysiological acquisition chip, the implanted main controller, and the implanted SLE wireless transceiver chip for wireless power reception and supply. The input of the implanted power management module is connected to the power receiving coil to obtain electrical energy. The implantable electrophysiological signal acquisition device does not use a battery, directly avoiding a series of safety risks associated with battery use, such as battery bulging, water ingress, and leakage. Furthermore, the lifespan of the implantable electrophysiological signal acquisition device is not limited by the battery's lifespan.

[0052] The external electrophysiological signal receiving device includes an external antenna, an external SLE wireless transceiver chip, an external main controller, a data interface, and an external power management module.

[0053] The external SLE wireless transceiver chip has a control terminal connected to an external main controller and an external antenna. It demodulates the signal received by the external antenna into electrophysiological data output according to the StarSpark Low Power Access Technology protocol. Furthermore, the external SLE wireless transceiver chip modulates the control signal into an external signal according to the StarSpark Low Power Access Technology protocol and transmits it through the external antenna. The data output terminal of the external SLE wireless transceiver chip is connected to the main controller.

[0054] The external main controller generates control signals;

[0055] The data interface is connected to the main controller and is used to transmit electrophysiological data for backend processing.

[0056] The output of the external power management module is connected to the power transmitting coil to transmit power, wirelessly charging or wirelessly powering the electrophysiological signal acquisition device. It is also connected to the external main controller and the external SLE wireless transceiver chip to power them.

[0057] Example 2

[0058] The implantable electrophysiological signal acquisition system provided in this embodiment, such as Figure 2 As shown, its architecture is similar to the implantable electrophysiological signal acquisition system provided in Embodiment 1. The difference is that, unlike Embodiment 1, this electrophysiological signal acquisition device can be powered by a battery. Thus, the external electrophysiological signal receiving device does not need to be worn continuously, increasing the user's freedom of movement to some extent.

[0059] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An implantable electrophysiological signal acquisition device, characterized in that, It includes an electrode array unit, an electrophysiological acquisition chip, an implanted main controller, an implanted SLE wireless transceiver chip, and an implanted antenna; The electrode array unit is used to pick up electrophysiological signals and is connected to the input terminal of the electrophysiological acquisition chip; The electrophysiological acquisition chip has its control terminal connected to the implanted main controller, and is used to output electrophysiological data based on the electrophysiological signals at the input terminal and the main control signals at the control terminal. The implanted SLE wireless transceiver chip has its control terminal connected to the implanted main controller, which is connected to the implanted antenna to modulate electrophysiological data according to the Starflash Low Power Access Technology protocol and transmit it through the implanted antenna.

2. The implantable electrophysiological signal acquisition device as described in claim 1, characterized in that, The implanted antenna receives external signals; The implanted SLE wireless transceiver chip demodulates external signals according to the StarFlash Low Power Access Technology protocol and sends them to the implanted main controller.

3. The implantable electrophysiological signal acquisition device as described in claim 1, characterized in that, The data output terminal of the electrophysiological acquisition chip is connected to the implanted main controller and / or the implanted SLE wireless transceiver chip.

4. The implantable electrophysiological signal acquisition device as described in claim 1, characterized in that, It also includes sensors connected to the implanted main controller; the sensors include temperature sensors, pressure sensors and / or leakage monitoring sensors.

5. The implantable electrophysiological signal acquisition device as described in claim 1, characterized in that, The device includes an implantable power management module, the output of which is connected to the electrophysiological acquisition chip, the implantable main controller, and the implantable SLE wireless transceiver chip, and the input of which is connected to a power receiving coil and / or a battery.

6. An external electrophysiological signal receiving device, characterized in that, It includes an external antenna, an external SLE wireless transceiver chip, an external main controller, and a data interface; The external SLE wireless transceiver chip has its control terminal connected to the external main controller and its external antenna connected to the external antenna to demodulate the signal received by the external antenna into electrophysiological data output according to the Star Flash Low Power Access Technology Protocol. The data interface is connected to the main controller and is used to transmit electrophysiological data for backend processing.

7. The external electrophysiological signal receiving device as described in claim 6, characterized in that, The external main controller generates control signals; The external SLE wireless transceiver chip modulates the control signal into an external signal according to the StarFlash Low Power Access Technology protocol and transmits it through an external antenna.

8. The external electrophysiological signal receiving device as described in claim 6, characterized in that, The data output terminal of the external SLE wireless transceiver chip is connected to the main controller and / or the data interface.

9. The external electrophysiological signal receiving device as described in claim 6, characterized in that, It includes an external power management module, the output of which is connected to a power transmitting coil, an external main controller, and an external SLE wireless transceiver chip.

10. An implantable electrophysiological signal acquisition system, characterized in that, It includes the implantable electrophysiological signal acquisition device as described in any one of claims 1 to 5 and the external electrophysiological signal receiving device as described in any one of claims 6 to 9.

Images