Outdoor walking auxiliary type portable foot drop correction electrical stimulation device

Abstract

According to the outdoor walking auxiliary type portable foot drop correction electrical stimulation device provided by the invention, through innovative design, the correction effect and the user experience are remarkably improved; the device adopts a multi-mode sensor array and an original gait phase prediction algorithm, real-time gait recognition with response delay lower than 50 ms is achieved, the walking rhythm of a patient is accurately matched, and it is ensured that electrical stimulation and a motion period are synchronous; based on a 3D stimulation mode library of terrain recognition and a self-adaptive intensity adjustment algorithm, stimulation parameters can be dynamically adjusted according to different terrains, and the gait stability in a complex environment is effectively improved; the bionic electrode layout and the magnetic type quick wearing system are combined with an invisible design, so that the wearing comfort and convenience are remarkably improved; clinical tests show that the device enables the step speed of a patient to be increased, the number of tumble times to be reduced, the comfort level of a user to be high, technical spanning from clinic to daily life is achieved, and an efficient, safe and easy-to-popularize rehabilitation solution is provided for the foot drop patient.

Description

Technical Field

[0001] The present invention relates to the field of rehabilitation equipment, and in particular to a portable outdoor walking-assisting foot drop correction electrical stimulation device. Background Art

[0002] Foot drop (foot drop syndrome) is a lower limb movement disorder caused by nerve damage or central nervous system diseases (such as stroke, cerebral palsy, and spinal cord injury). It is characterized by an inability to lift the foot normally, resulting in an unstable gait and difficulty walking. Currently, the main treatments for foot drop include traditional braces and functional electrical stimulation (FES) devices.

[0003] Traditional braces limit foot drop through mechanical support, but they have problems such as bulky size, poor aesthetics, and low comfort, which seriously affect patients' willingness to engage in outdoor activities. Existing FES devices are mostly designed based on clinical environments, rely on fixed equipment, lack portability and outdoor adaptability, and are difficult to meet patients' daily rehabilitation needs. In addition, existing technologies generally lack dynamic gait recognition capabilities and are unable to adjust stimulation parameters in real time according to walking rhythm, resulting in limited treatment effects. For example, traditional FES devices have a delay (usually more than 100ms) when switching gait phases, which cannot accurately match the patient's movement state, resulting in muscle contraction and gait cycle being out of sync, affecting the rehabilitation effect.

[0004] In existing technologies, although functional electrical stimulation has been proven to improve motor function by activating muscle contraction through electric current, its application is still limited by the following issues:

[0005] 1) The equipment has low integration and cannot adapt to complex terrain (such as ramps and stairs);

[0006] 2) Stimulation parameters are fixed and lack individual adjustment capabilities;

[0007] 3) The wearable design is bulky, affecting the comfort of long-term use.

[0008] These issues hinder the widespread adoption of existing FES technology for home rehabilitation or outdoor settings, limiting patients' recovery efficiency and ability to lead independent lives. Therefore, there is an urgent need for a foot drop correction device that integrates intelligent gait recognition, dynamic parameter adjustment, and a lightweight design to address the core issues of existing technologies, such as poor adaptability, low comfort, and limited therapeutic effectiveness. Summary of the Invention

[0009] The purpose of the present invention is to provide a portable outdoor walking-assisting foot drop correction electrical stimulation device to solve the problems existing in the above-mentioned prior art.

[0010] To achieve the above object, the present invention provides the following solutions:

[0011] The present invention provides a portable outdoor walking-assisting foot drop correction electrical stimulation device, comprising:

[0012] A magnetic quick-wear device adapted to the human foot and provided with electrodes on its surface for providing electrical stimulation;

[0013] A multimodal sensor array, which is provided on the magnetic quick wearable device and is used to collect gait phase and terrain data in real time;

[0014] A muscle response monitoring module, which is provided on the magnetic quick wearable device and is used to detect muscle contraction feedback signals;

[0015] A controller establishes communication with the electrode sheet, the multimodal sensor array, and the muscle response monitoring module, and establishes wireless communication with a cloud server, a smart terminal device, and a smart wearable device.

[0016] Preferably, the magnetic quick wearable device includes a foot-shaped wearable body, the electrode sheet is bionically arranged on the surface of the foot-shaped wearable body, the side of the foot-shaped wearable body is provided with an adjustable strap, and the end of the adjustable strap is provided with a magnetic interface.

[0017] Preferably, the electrode sheets are arranged at the motor points of the tibialis anterior and gastrocnemius muscles, and adhered to the skin surface through flexible conductive materials.

[0018] Preferably, the multimodal sensor array includes a nine-axis inertial measurement unit, a plantar pressure sensor, a barometer and a GPS module.

[0019] Preferably, the muscle response monitoring module adopts a bioelectric detection probe, and the bioelectric detection probe is set at the stimulation muscle point.

[0020] Preferably, the controller includes a shell, a control panel and a display screen are provided on the surface of the shell, an integrated circuit board and a power supply are provided in the shell, an MCU, an electrical stimulation drive module, a dynamic FES output module, a data acquisition module and a wireless communication module are integrated on the integrated circuit board, the control panel, the display screen, the power supply, the dynamic FES output module, the data acquisition module and the wireless communication module are all electrically connected to the MCU, the electrical stimulation drive module is electrically connected to the electrode sheet and the dynamic FES output module, and the data acquisition module is electrically connected to the multimodal sensor array and the muscle response monitoring module.

[0021] Preferably, the protection grade of the housing is IP67.

[0022] Preferably, the MCU has built-in gait phase prediction algorithm, terrain classifier and 3D stimulation pattern library based on terrain recognition.

[0023] Preferably, the power supply is connected to the wireless charging circuit and the solar charging circuit.

[0024] Preferably, a voice interaction module and a gesture recognition module are also provided on the surface of the controller.

[0025] Compared with the prior art, the present invention has achieved the following beneficial technical effects:

[0026] The present invention provides a portable outdoor walking-assisting foot drop correction electrical stimulation device, which significantly improves the correction effect and user experience through innovative design; the device adopts a multimodal sensor array and an original gait phase prediction algorithm to achieve real-time gait recognition with a response delay of less than 50ms, accurately matching the patient's walking rhythm, and ensuring that electrical stimulation is synchronized with the movement cycle; the 3D stimulation pattern library and adaptive intensity adjustment algorithm based on terrain recognition can dynamically adjust the stimulation parameters according to different terrains, effectively improving gait stability in complex environments; the bionic electrode layout and the magnetic quick-wearing system are combined with an invisible design to significantly improve the wearing comfort and convenience; clinical trials have shown that the device increases the patient's walking speed, reduces the number of falls, and improves user comfort, achieving a technological leap from clinical to daily life, and providing patients with foot drop with an efficient, safe and easy-to-promote rehabilitation solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a schematic structural diagram of a portable outdoor walking-assisting foot drop correction electrical stimulation device provided by the present invention;

[0029] Figure 2 This is a schematic diagram of the control relationship of a portable outdoor walking-assisting foot drop correction electrical stimulation device provided by the present invention. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] The purpose of the present invention is to provide a portable outdoor walking-assisting foot drop correction electrical stimulation device to solve the problems existing in the prior art.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Example 1:

[0034] This embodiment provides a portable outdoor walking assistance and foot drop correction electrical stimulation device. Figure 1 and Figure 2 As shown, including:

[0035] The magnetic fast-wearing device 1 is adapted to the human foot to ensure good adaptability. An electrode sheet 2 is provided on its surface for providing electrical stimulation. The size of the electrode sheet 2 can be adjusted according to actual needs to ensure accurate electrical stimulation.

[0036] A multimodal sensor array 3 is provided on the magnetic fast wearable device 1 and is used to collect gait phase and terrain data in real time, and to achieve rapid dynamic adjustment of the electrical stimulation mode using a built-in AI algorithm;

[0037] The muscle response monitoring module 4 is provided on the magnetic fast wearable device 1 and is used to detect muscle contraction feedback signals and control the stimulation intensity through real-time feedback of muscle stimulation to ensure safety;

[0038] The controller 5 establishes communication with the electrode sheet 2, the multimodal sensor array 3 and the muscle response monitoring module 4 respectively, and establishes wireless communication with the cloud server 6, the smart terminal device 7 and the smart wearable device 8.

[0039] In this embodiment, the cloud server 6 can record stimulation data, thereby providing data support for subsequent algorithm updates. The smart terminal device can be a smart phone, a smart watch, etc., which is convenient for remote control. The smart wearable device 8 uses AR glasses to achieve visual feedback.

[0040] As an embodiment, the magnetic quick wearable device 1 includes a foot-shaped wearable body, which adopts a lightweight hidden design, has a thickness of <8mm, and a weight of <150g. The electrode sheet 2 is bionically arranged on the surface of the foot-shaped wearable body. The side of the foot-shaped wearable body is provided with an adjustable strap, which is convenient for adjustment according to different foot sizes. The end of the adjustable strap is provided with a magnetic interface, which can achieve quick wearing in 3 seconds.

[0041] As an embodiment, the electrode sheet 2 is set at the motor points of the tibialis anterior and gastrocnemius muscles, and is adhered to the skin surface through a flexible conductive material. The placement point is optimized according to electromyography research, and can adapt to the stimulation point while ensuring the safety of the stimulation process.

[0042] As an implementation method, the multimodal sensor array 3 includes a nine-axis inertial measurement unit, a plantar pressure sensor, a barometer, and a GPS module. It utilizes an original gait phase prediction algorithm to achieve real-time gait recognition with a response delay of less than 50ms, accurately matching the patient's walking rhythm and ensuring synchronization of electrical stimulation with the movement cycle. At the same time, it utilizes GPS terrain database preloading and barometer altitude change detection to provide a basis for subsequent terrain judgment.

[0043] As an embodiment, the muscle response monitoring module 4 adopts a bioelectric detection probe, which is set at the stimulation muscle point. Through stimulation feedback, the stimulation process can be corrected in combination with an adaptive intensity adjustment algorithm to further improve the safety of the stimulation.

[0044] As an embodiment, the controller 5 includes a shell, a control panel and a display screen are provided on the surface of the shell, an integrated circuit board and a power supply are provided inside the shell, an MCU, an electrical stimulation drive module, a dynamic FES output module, a data acquisition module and a wireless communication module are integrated on the integrated circuit board, the control panel, the display screen, the power supply, the dynamic FES output module, the data acquisition module and the wireless communication module are all electrically connected to the MCU, the electrical stimulation drive module is electrically connected to the electrode sheet and the dynamic FES output module, and the data acquisition module is electrically connected to the multimodal sensor array and the muscle response monitoring module.

[0045] As an implementation manner, the protection grade of the housing is IP67.

[0046] As an implementation method, the MCU has a built-in gait phase prediction algorithm, a terrain classifier, and a 3D stimulation pattern library based on terrain recognition. The 3D stimulation pattern library based on terrain recognition can dynamically adjust the stimulation parameters according to different terrains (such as flat ground, ramps, and stairs). For example, when climbing stairs, it automatically increases the stimulation intensity of the tibialis anterior muscle by 1.5% and extends the stimulation time by 20%, effectively improving gait stability in complex environments.

[0047] As an implementation method, the power supply is connected to the wireless charging circuit and the solar charging circuit, providing multiple power supply modes and being more convenient to use.

[0048] As an implementation method, the surface of the controller 5 is also provided with a voice interaction module and a gesture recognition module, which can realize bone conduction voice interaction and gesture interaction, realize multiple control methods, and be more convenient and quick to use.

[0049] The present invention provides a portable outdoor walking-assisting foot drop correction electrical stimulation device, which significantly improves the correction effect and user experience through innovative design; the device adopts a multimodal sensor array and an original gait phase prediction algorithm to achieve real-time gait recognition with a response delay of less than 50ms, accurately matching the patient's walking rhythm, and ensuring that electrical stimulation is synchronized with the movement cycle; the 3D stimulation pattern library and adaptive intensity adjustment algorithm based on terrain recognition can dynamically adjust the stimulation parameters according to different terrains, effectively improving gait stability in complex environments; the bionic electrode layout and the magnetic quick-wearing system are combined with an invisible design to significantly improve the wearing comfort and convenience; clinical trials have shown that the device increases the patient's walking speed, reduces the number of falls, and improves user comfort, achieving a technological leap from clinical to daily life, and providing patients with foot drop with an efficient, safe and easy-to-promote rehabilitation solution.

[0050] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A portable outdoor walking-assistance foot drop correction electrical stimulation device, characterized in that: include: A magnetic quick-wear device adapted to the human foot and provided with electrodes on its surface for providing electrical stimulation; A multimodal sensor array, which is provided on the magnetic quick wearable device and is used to collect gait phase and terrain data in real time; A muscle response monitoring module, which is provided on the magnetic quick wearable device and is used to detect muscle contraction feedback signals; A controller establishes communication with the electrode sheet, the multimodal sensor array, and the muscle response monitoring module, and establishes wireless communication with a cloud server, a smart terminal device, and a smart wearable device.

2. The portable outdoor walking-assistance foot drop correction electrical stimulation device according to claim 1, characterized in that: The magnetic fast wearable device includes a foot-shaped wearable body, the electrode sheet is bionically arranged on the surface of the foot-shaped wearable body, the side of the foot-shaped wearable body is provided with an adjustable strap, and the end of the adjustable strap is provided with a magnetic interface.

3. The portable outdoor walking-assisting foot drop correction electrical stimulation device according to claim 1, characterized in that: The electrode sheets are arranged on the motor points of the tibialis anterior and gastrocnemius muscles and adhere to the skin surface through flexible conductive materials.

4. The portable outdoor walking-assisting foot drop correction electrical stimulation device according to claim 1, characterized in that: The multimodal sensor array includes a nine-axis inertial measurement unit, a plantar pressure sensor, a barometer, and a GPS module.

5. The portable outdoor walking-assisting foot drop correction electrical stimulation device according to claim 1, characterized in that: The muscle response monitoring module adopts a bioelectric detection probe, and the bioelectric detection probe is set at the stimulation muscle point.

6. The portable outdoor walking-assisting foot drop correction electrical stimulation device according to claim 1, characterized in that: The controller includes a shell, a control panel and a display screen are provided on the surface of the shell, an integrated circuit board and a power supply are provided in the shell, an MCU, an electrical stimulation drive module, a dynamic FES output module, a data acquisition module and a wireless communication module are integrated on the integrated circuit board, the control panel, the display screen, the power supply, the dynamic FES output module, the data acquisition module and the wireless communication module are all electrically connected to the MCU, the electrical stimulation drive module is electrically connected to the electrode sheet and the dynamic FES output module, and the data acquisition module is electrically connected to the multimodal sensor array and the muscle response monitoring module.

7. The portable outdoor walking-assisting foot drop correction electrical stimulation device according to claim 6, characterized in that: The protection grade of the housing is IP67.

8. The portable outdoor walking-assisting foot drop correction electrical stimulation device according to claim 6, characterized in that: The MCU has built-in gait phase prediction algorithm, terrain classifier and 3D stimulation pattern library based on terrain recognition.

9. The portable outdoor walking-assisting foot drop correction electrical stimulation device according to claim 6, characterized in that: The power supply is connected to the wireless charging circuit and the solar charging circuit.

10. The portable outdoor walking-assisting foot drop correction electrical stimulation device according to claim 6, characterized in that: The surface of the controller is also provided with a voice interaction module and a gesture recognition module.

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