A wearable electronic tremor suppression device based on antagonistic principle

Abstract

The application discloses a wearable electronic device for inhibiting static tremor based on antagonistic principle, which comprises an eagle-eye type three-electrode electromyographic signal detection device, an electromyographic signal amplification and processing unit, a functional electric stimulation signal generation unit, a pair of muscle functional electric stimulation electrodes and a wearable bandage, the eagle-eye type three-electrode electromyographic signal detection device and the pair of muscle functional electric stimulation electrodes are fixed on the opposite sides of the bandage, and the electromyographic signal amplification and processing unit and the functional electric stimulation signal generation unit are fixed on the same side of the bandage; the eagle-eye type three-electrode electromyographic signal detection device is used for detecting the motor action potential signal of the motor nerve of the agonist muscle causing the muscle tremor, the motor action potential signal is amplified, processed and mode-identified, and then is sent to the functional electric stimulation signal generation unit to generate the functional electric stimulation signal which is applied to the pair of muscle functional electric stimulation electrodes positioned on the surface of the antagonist muscle to stimulate the antagonist muscle to make the limb movement in the direction opposite to that of the agonist muscle, so that the effect of the agonist muscle is offset and the limb tremor is eliminated.

Description

Technical Field

[0001] This invention belongs to the interdisciplinary field of rehabilitation medicine and electronic science, and relates to a wearable electronic suppression device for resting tremor based on the principle of antagonism. Background Technology

[0002] One symptom of Parkinson's disease is resting tremor, a rhythmic shaking of 4-6 Hz in the hands, limbs, or even the whole body at rest. This shaking worsens with stress and lessens during activities such as walking, disappearing during sleep. The primary cause of resting tremor is an imbalance in the two major neurotransmitter systems: the acetylcholine system and the dopamine system. Tremors cause physical inconvenience, psychological burden, and a reduced quality of life for patients. Currently, the main treatment for resting tremor is the use of anti-Parkinson's drugs. However, it is generally believed that resting tremor as a manifestation of Parkinson's syndrome is currently difficult to cure with medication. For patients whose tremors are poorly controlled by medication and whose quality of life is severely affected, deep brain stimulation (DBS), also known as brain pacemaker surgery, is usually recommended. Although most patients can achieve long-term tremor control through surgery, brain surgery is highly invasive, and the number of suitable patients is limited. Summary of the Invention

[0003] Purpose of the invention: The purpose of this invention is to provide a wearable electronic suppression device for resting tremor based on the principle of antagonism. This device is lightweight, concealable, and non-invasive in suppressing different types of resting tremor.

[0004] Technical Solution: This invention provides a wearable electronic suppression device for resting tremor based on the antagonistic principle, comprising: an eagle-eye type electromyography (EMG) signal detection three-electrode unit, an EMG signal amplification and processing unit, a functional electrical stimulation (fEP) signal generation unit, muscle functional electrical stimulation (EMS) electrode pairs, and an adhesive strip. The eagle-eye type EMG signal detection three-electrode unit and the muscle functional EMS electrode pairs are respectively fixed to the reverse side of the adhesive strip and positioned on the agonist and antagonist muscles after adhesion. The connecting wires of each electrode are exposed on the front side of the adhesive strip through openings in the strip. The EMG signal amplification and processing unit and the functional electrical stimulation (FPS) signal generation unit are also included. The electrical stimulation signal generation units are all fixed on the front of the adhesive strip. The electrode connection lines of the eagle-eye electromyography signal detection three electrodes are all connected to the electromyography signal amplification and processing unit. The output of the electromyography signal amplification and processing unit is connected to the functional electrical stimulation signal generation unit. The output end of the functional electrical stimulation signal generation unit is connected to the electrode connector of the muscle functional electrical stimulation electrode pair. The eagle-eye electromyography signal detection three electrodes are used to detect the action potential signal of the agonist motor nerve that causes muscle tremors. The muscle functional electrical stimulation electrode pair is used to apply functional electrical stimulation pulses to the surface of the antagonist muscle.

[0005] Preferably, the eagle-eye electromyography signal detection three-electrode includes a first differential electrode, a second differential electrode, and a mid-position electrode. The mid-position electrode is a rectangular patch electrode, and its lead connection point is directly set at the center of the rectangular patch. The rectangular patch on both sides of the lead connection point of the mid-position electrode has a first differential electrode hole and a second differential electrode hole. The middle lead connection point of the first differential electrode and the second differential electrode respectively passes through the first differential electrode hole and the second differential electrode hole to contact the agonist muscle.

[0006] Preferably, the electromyography (EMG) signal amplification and processing unit is used to amplify and process the detected agonist motor nerve action potential signals. Specifically: firstly, it has the function of suppressing stimulation artifacts generated by the stimulation of antagonist muscles by the functional electrical stimulation electrodes of the muscles under the excitation of the functional electrical stimulation signal generation unit; secondly, it has the function of recognizing resting tremor EMG patterns.

[0007] Preferably, the functional electrical stimulation signal generation unit generates asymmetric biphasic pulses with charge balance under the control of the input electromyographic signal pattern, so as to avoid tissue damage caused by charge accumulation due to monophasic pulses.

[0008] Preferably, the stimulation head of the functional electrical stimulation electrode pair of muscles passes through an adhesive strip and contacts the antagonist muscle.

[0009] Preferably, the adhesive strip is made of clothing textile materials to ensure its biocompatibility and wearability.

[0010] Beneficial effects: Compared with the prior art, the wearable electronic suppression device for resting tremor of the present invention is small in size, low in power consumption, safe to operate, reliable in performance, wearable, and easy to use for a long time. It can effectively suppress resting tremor and has therapeutic, economic and social benefits. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the front structure of the device of the present invention;

[0012] Figure 2 This is a schematic diagram of the reverse side structure of the device of the present invention. Detailed Implementation

[0013] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. The following description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

[0014] like Figure 1 and Figure 2As shown, the present invention discloses a wearable electronic suppression device for resting tremor based on the antagonistic principle, comprising an eagle-eye type electromyography (EMG) signal detection trielectrode 1, an EMG signal amplification and processing unit 2, a functional electrical stimulation signal generation unit 3, a pair of muscle functional electrical stimulation electrodes 4, and an adhesive strip 5. The eagle-eye type EMG signal detection trielectrode 1 and the muscle functional electrical stimulation electrode pair 4 are fixed to the front side of the adhesive strip 5, and their electrode connecting wires are exposed through openings fixed to the adhesive strip 5 to connect with the EMG signal amplification and processing unit 2 and the functional electrical stimulation signal generation unit 3, which are fixed to the front side of the adhesive strip 5. The adhesive strip 5 has an outward-facing front side, which is the side that does not contact the muscle; and an inward-facing back side, which is the side that contacts the muscle. The eagle-eye type electromyography (EMG) signal detection three-electrode 1 is used to detect the agonist motor nerve action potential signal that causes muscle tremors. The EMG signal amplification and processing unit 2 amplifies and processes the detected agonist motor nerve action potential signal. The functional electrical stimulation signal generation unit 3 generates functional electrical stimulation pulses. The muscle functional electrical stimulation electrode applies these pulses to the surface of the antagonist muscle, stimulating the antagonist muscle to perform limb movements opposite to those of the agonist muscle, thereby counteracting the effect of the agonist muscle and eliminating limb tremors. The eagle-eye type EMG signal detection three-electrode and the muscle functional electrical stimulation electrode are fixed to the inward-facing back side of the adhesive strip to achieve the detection of agonist muscle EMG signals and the functional electrical stimulation of the antagonist muscle. The adhesive strip 5 is made of clothing-like textile materials to ensure its biocompatibility and wearability.

[0015] The eagle-eye type electromyography (EMG) signal detection three-electrode 1 consists of a first differential electrode 11, a second differential electrode 12, and a midpoint electrode 13. The midpoint electrode 13 is made of a rectangular flexible conductive material with two holes in the center. The connection points of the leads of the first differential electrode 11 and the second differential electrode 12 extend through the two holes on the midpoint electrode 13, which is directly located at the center of the rectangular flexible conductive material. The connecting lines of the two differential electrodes are parallel to the narrow side of the adhesive strip. The first differential electrode 11 and the second differential electrode 12 are embedded in the two holes of the rectangular sheet material of the integrally conductive midpoint electrode 13, and are used to detect the action potential signals of the agonist motor nerves that cause muscle tremors. This three-electrode structure has the effect of suppressing stimulus artifacts.

[0016] The action potential signal of the agonist muscle that causes muscle tremor, detected by the eagle-eye electromyography signal detection three-electrode 1, is transmitted to the electromyography signal amplification and processing unit 2 for amplification, filtering and pattern recognition, etc., to obtain the electromyography signal of agonist muscle tremor contraction. It is sent to the functional electrical stimulation signal generation unit 3 to generate charge-balanced biphasic electrical pulses suitable for functional electrical stimulation of antagonist muscles. The pulses are applied to the antagonist muscle through the first functional electrical stimulation electrode 41 and the second functional electrical stimulation electrode 42, inducing the antagonist muscle to contract, thereby causing the limb to produce a movement opposite to that of the agonist muscle, inhibiting or weakening the limb tremor.

[0017] To enhance the inhibitory effect on resting tremor, the distance between the eagle-eye electromyography signal detection three-electrode 1 and the muscle functional electrical stimulation electrode pair 4 should be such that when they wrap around the limb, they fall precisely on the agonist and antagonist muscles.

Claims

1. A wearable electronic suppression device for resting tremor based on the antagonistic principle, characterized in that, include: The system comprises an eagle-eye type electromyography (EMG) signal detection three-electrode unit (1), an EMG signal amplification and processing unit (2), a functional electrical stimulation signal generation unit (3), a muscle functional electrical stimulation electrode pair (4), and an adhesive strip (5). The eagle-eye type EMG signal detection three-electrode unit (1) and the muscle functional electrical stimulation electrode (4) are fixed on the reverse side of the adhesive strip (5) and positioned on the agonist and antagonist muscles after adhesive application, respectively. The connecting wires of each electrode are exposed on the front side of the adhesive strip (5) through openings in the adhesive strip (5). The EMG signal amplification and processing unit (2) and the functional electrical stimulation signal generation unit (3) are both fixed on the reverse side of the adhesive strip (5). On the front of the adhesive strip (5), the electrode connection lines of the eagle-eye electromyography signal detection trielectrode (1) are all connected to the electromyography signal amplification and processing unit (2). The output of the electromyography signal amplification and processing unit (2) is connected to the functional electrical stimulation signal generation unit (3). The output end of the functional electrical stimulation signal generation unit (3) is connected to the electrode connector of the muscle functional electrical stimulation electrode pair (4). The eagle-eye electromyography signal detection trielectrode (1) is used to detect the action potential signal of the agonist motor nerve that causes muscle tremor. The muscle functional electrical stimulation electrode pair is used to apply the functional electrical stimulation pulse to the surface of the antagonist muscle. The eagle-eye electromyography signal detection three-electrode (1) includes a first differential electrode (11), a second differential electrode (12), and a mid-position electrode (13); the first differential electrode (11) and the second differential electrode (12) are used to detect the agonist motor nerve action potential signal that causes muscle tremors; The functional electrical stimulation signal generation unit (3) generates charge-balanced asymmetric biphasic pulses under the control of the input electromyographic signal pattern.

2. The wearable electronic tremor suppression device based on the antagonistic principle according to claim 1, characterized in that, The mid-position electrode (13) is a rectangular patch electrode, and its lead connection point is directly set in the center of the rectangular patch. The rectangular patch on both sides of the lead connection point of the mid-position electrode has a first differential electrode hole and a second differential electrode hole. The middle lead connection point of the first differential electrode (11) and the second differential electrode (12) respectively passes through the first differential electrode hole and the second differential electrode hole to contact the agonist muscle.

3. The wearable electronic tremor suppression device based on the antagonistic principle according to claim 1, characterized in that, The electromyography signal amplification and processing unit (2) is used to amplify and process the detected agonist motor nerve action potential signals.

4. The wearable electronic tremor suppression device based on the antagonistic principle according to claim 1, characterized in that, The stimulation head of the muscle functional electrical stimulation electrode pair (4) passes through the adhesive strip (5) and contacts the antagonist muscle.

5. The wearable electronic tremor suppression device based on the antagonistic principle according to claim 1, characterized in that: The adhesive strip (5) is made of clothing textile materials.

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