An active functional electrical stimulation device

Abstract

An active functional electrical stimulation device, the system comprising an integrated block (1) and an elastic zipper (2) connected to the integrated block (1), the integrated block (1) and the elastic zipper (2) forming a ring-shaped structure that can be put on the body; the integrated block (1) is a strip-shaped structure, the integrated block (1) is hung with the elastic zipper (2) through a temporary hanging device on the side to form a detachable connection structure; the integrated block of the invention comprises a collection part for collecting muscle surface electromyographic signals; an electrical stimulation part for emitting weak electrical pulse stimulation; and a single-chip part for collecting and processing surface electromyographic signals. These parts are integrated on the integrated block, and then one or more integrated blocks are formed into a ring shape that can cover the corresponding part of the body through the elastic zipper, and the position and number of the integrated blocks are adjusted by installing and removing the integrated blocks connected to the elastic zipper, and the length of the elastic zipper connected to the integrated block can also be changed to adapt to different human bodies; the installation and removal between the integrated block and the elastic zipper are very convenient and fast, which is conducive to use in daily life.

Description

Technical Field

[0001] The present invention relates to the technical field of rehabilitation auxiliary equipment, in particular to an active functional electrical stimulation system controlled by electromyographic signals. Background Art

[0002] Functional electrical stimulation is a common technology for the rehabilitation of paralyzed patients. It uses artificial weak current pulse signals to stimulate the skeletal muscles of paralyzed patients. After being stimulated, the patient's muscles contract and drive the limbs to move. At present, functional electrical stimulation can achieve flexion and extension, grasping of the upper limbs of paralyzed patients; standing, walking, riding a bicycle, and correcting foot drop in the lower limbs.

[0003] With the development of electronic technology, functional electrical stimulation technology has become more mature, and some commercial products have been launched. In recent years, new control technology and biosensor technology have given functional electrical stimulation systems more comprehensive functions. For example, EEG signals and EMG signals have become important control sources for functional electrical stimulation.

[0004] Most of the existing surface electromyographic signal collectors transmit electromyographic signals by wire, and most of the muscle electrical stimulation and electromyographic signal collection devices separate stimulation and collection.

[0005] Most importantly, current equipment is inconvenient to use, difficult to disassemble and install, and inconvenient to carry. In addition, the location and amount of electrical stimulation cannot be selected according to needs. Summary of the invention

[0006] Purpose of the invention:

[0007] The present invention provides an active functional electrical stimulation device, the purpose of which is to solve the problems existing in the past.

[0008] Technical solution:

[0009] An active functional electrical stimulation device, characterized in that: the system comprises an integrated block and an elastic zipper connected to the integrated block, the integrated block and the elastic zipper forming a ring-shaped structure that can be put on the body; the integrated block is a strip-shaped structure, and the integrated block is connected to the elastic zipper through a temporary hanging device on the side to form a detachable connection structure;

[0010] The temporary hooking device comprises a movable clip arranged on the side of the integrated block and a buckle arranged at the end of the elastic zipper and used in conjunction with the movable clip;

[0011] The movable card comprises a reference rotating shaft and two movable card plates movably arranged on the reference rotating shaft, the rear ends of the two movable card plates are sleeved on the reference rotating shaft and can rotate around the reference rotating shaft, so that the front ends of the two movable card plates form a structure that can be opened and closed;

[0012] The inner sides of the front ends of the two movable cards form an inclined surface, and when the two movable cards are closed, the inclined surfaces of the front ends of the two movable cards form a V-shaped notch;

[0013] The buckle includes a buckle base plate, a pressure plate and a locking movable tongue. The buckle base plate is provided with a through hole for two movable cards to pass through. The rear end of the pressure plate is movably arranged on the column through a movable shaft. The pressure plate can rotate around the movable shaft. The column is arranged on one side of the through hole on the buckle base plate. The bottom of the pressure plate is provided with a V-shaped protrusion adapted to the V-shaped notch.

[0014] The locking movable tongue is arranged on the other side of the through hole. The locking movable tongue is a structure that can clamp the front end of the pressure plate when in use. The bottom of the locking movable tongue is arranged on the buckle base plate through the bottom shaft. The locking movable tongue can rotate around the bottom shaft. A reset torsion spring that can control the locking movable tongue to clamp the pressure plate is arranged on the bottom shaft.

[0015] A reference reset torsion spring capable of controlling the closing of two movable cards is arranged on the reference rotating shaft.

[0016] The upper end surface of the locking movable tongue is a smooth inclined arc surface.

[0017] A limiting groove is arranged at the front end of the pressing plate for the locking movable tongue to be clamped; the front end surface of the inner side of the pressing plate is an inclined surface adapted to the upper end surface of the locking movable tongue.

[0018] An elastic rubber pad is arranged on the inner wall of the through hole, and the position where the elastic rubber pad contacts the two movable cards is an inclined surface.

[0019] The elastic zipper is a structure made of flexible material.

[0020] The integrated block includes an acquisition module, an amplifier, an electrical stimulation module and a single-chip microcomputer;

[0021] The acquisition module is connected to the amplifier and the electrical stimulation module, and the amplifier and the electrical stimulation module are connected to the single chip microcomputer.

[0022] The acquisition part and the amplifier part are completed by one module.

[0023] The acquisition module is a module that uses multiple channels to collect surface electromyographic signals of human muscles.

[0024] The amplifier part adopts a programmable gain amplifier (PGA).

[0025] Advantages and effects:

[0026] In order to overcome the shortcomings of the existing structure, the present invention provides an active functional electrical stimulation device. The system has made improvements and innovations on the existing electrode structure and process. The stimulation electrode and the collection electrode are integrated through the integrated block. At the same time, the elastic zipper with a flexible structure is used to increase the conformality of the electrode attachment and ensure the accuracy and speed of the collected signal. The use of movable cards and buckles makes it easier to install and disassemble the integrated block and the elastic zipper, making it more adaptable;

[0027] The integrated block of the present invention comprises a collection part for collecting muscle surface electromyographic signals; an amplifier part connected to the collection part and used to amplify the surface electromyographic signals; an electrical stimulation part for emitting weak electrical pulse stimulation; and a single-chip part for collecting and processing surface electromyographic signals. These parts are integrated on the integrated block, and then one or more integrated blocks are formed into a ring shape that can cover the corresponding parts of the body through elastic zippers, and the position and number of the integrated blocks can be adjusted by installing and removing the integrated blocks connected to the elastic zippers, and the length of the elastic zippers connected to the integrated blocks can also be changed to adapt to different human bodies; the installation and removal between the integrated block and the elastic zippers are very convenient and fast, which is conducive to use in daily life. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 (a) is a schematic diagram of the use of the latissimus dorsi muscle of the back according to an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the use of the biceps brachii of an arm according to an embodiment of the present invention;

[0030] Figure 3 for Figure 2 Side view of

[0031] Figure 4 This is a schematic diagram of the use of the gastrocnemius muscle of the leg according to an embodiment of the present invention;

[0032] Figure 5 for Figure 4 Side view of Figure 6 The structure diagram of the whole system of the embodiment of the present invention (from Fig. 9 A cross-sectional view in a direction looking downward from above);

[0033] Figure 7 The structural diagram of the active card of the present invention (from Fig. 9 A cross-sectional view in a direction looking downward from above);

[0034] Figure 8 It is a cross-sectional view of the temporary hitch device in the coordinated use state;

[0035] Fig. 9 This is the overall external view of the temporary hooking device in its coordinated usage state. DETAILED DESCRIPTION

[0036] The present invention provides an active functional electrical stimulation device to solve the deficiencies in the existing structures and process technologies.

[0037] An active functional electrical stimulation device, the system comprises an integrated block 1 and an elastic zipper 2 connected to the integrated block 1, the integrated block 1 and the elastic zipper 2 forming a ring-shaped structure that can be put on the body; the integrated block 1 is a strip-shaped structure, the integrated block 1 is connected to the elastic zipper 2 through a temporary hanging device on the side to form a detachable connection structure;

[0038] The temporary hooking device comprises a movable clip arranged on the side of the integrated block 1 and a buckle arranged at the end of the elastic zipper 2 and used in conjunction with the movable clip;

[0039] The movable card comprises a reference rotating shaft 3 and two movable card plates 4 movably arranged on the reference rotating shaft 3, the rear ends of the two movable card plates 4 are sleeved on the reference rotating shaft 3 and can rotate around the reference rotating shaft 3, so that the front ends of the two movable card plates 4 form a structure that can be opened and closed;

[0040] The inner sides of the front ends of the two movable cards 4 form an inclined surface A. When the two movable cards 4 are closed, the inclined surfaces A at the front ends of the two movable cards 4 form a V-shaped notch B.

[0041] The buckle comprises a buckle base plate 5, a pressure plate 6 and a locking movable tongue 7. The buckle base plate 5 is provided with a through hole 5-1 for two movable cards 4 to pass through. The rear end of the pressure plate 6 is movably arranged on a column 9 through a movable shaft 8. The pressure plate 6 can rotate around the movable shaft 8. The column 9 is arranged on one side of the through hole 5-1 on the buckle base plate 5. The bottom of the pressure plate 6 is provided with a V-shaped protrusion 6-1 adapted to the V-shaped notch B.

[0042] The locking movable tongue 7 is arranged on the other side of the through hole (5-1. The locking movable tongue 7 is a structure that can clamp the front end of the pressure plate 6 when in use. The bottom of the locking movable tongue 7 is arranged on the buckle base plate 5 through the bottom shaft 7-1. The locking movable tongue 7 can rotate around the bottom shaft 7-1. The bottom shaft 7-1 is provided with a return torsion spring that can control the locking movable tongue 7 to clamp the pressure plate 6.

[0043] The reference rotating shaft 3 is provided with a reference reset torsion spring capable of controlling the closing of the two movable cards 4, so that the two movable cards 4 can be quickly closed during disassembly, which is convenient for disassembly.

[0044] The upper end surface C of the locking movable tongue 7 is a smooth inclined arc surface (similar to the shape of the locking tongue).

[0045] The front end of the pressing plate 6 is provided with a limit groove (6-2) for the locking movable tongue 7 to prevent the locking movable tongue 7 from falling off when the pressing plate 6 is stuck; the inner side of the pressing plate 6 (such as Fig. 9The front end face of the left side shown in the figure is a slope D adapted to the upper end face C of the locking movable tongue 7. The upper end face of the locking movable tongue 7 is provided with a handle 7-2 for convenient pulling.

[0046] An elastic rubber pad 5-2 is arranged on the inner wall of the through hole 5-1, and the position where the elastic rubber pad 5-2 contacts the two movable cards 4 is an inclined surface.

[0047] The integrated block 1 includes an acquisition module, an amplifier, an electrical stimulation module and a single chip microcomputer;

[0048] The acquisition module is connected to the amplifier and the electrical stimulation module, and the amplifier and the electrical stimulation module are connected to the single chip microcomputer.

[0049] The acquisition part is used to collect the surface electromyographic signals of muscles;

[0050] An amplifier part, connected to the acquisition part, for amplifying the surface electromyography signal;

[0051] The electrical stimulation part is used to send out weak electrical pulse stimulation;

[0052] The microcontroller part is used to collect and process surface electromyography signals.

[0053] The elastic fastener 2 is a structure made of a flexible material.

[0054] The acquisition part and the amplifier part are completed by one module (integrated in one module).

[0055] The acquisition module is a module that uses multiple channels to collect surface electromyographic signals of human muscles.

[0056] The amplifier part adopts a programmable gain amplifier (PGA), which is a very versatile amplifier, and its amplification factor can be controlled by a program as needed; it is controlled by an analog switch.

[0057] The electrical stimulation part can send electrical pulse stimulation to a designated position according to instructions.

[0058] The single chip microcomputer part can process the received signal.

[0059] The acquisition part of the present invention uses multiple channels to collect the surface electromyographic signals of human muscles, and transmits the collected signals to the amplifier part; the amplifier part uses a programmable gain amplifier (PGA), which is a very versatile amplifier and can control the amplification factor according to the program; the amplified surface electromyographic signals will be transmitted to the single-chip microcomputer part, and the single-chip microcomputer part will process the received surface electromyographic signals and then transmit instructions to the analog switch; the electrical stimulation part is controlled by the analog switch and can emit weak electrical pulses to stimulate the muscles.

[0060] The above structures will be introduced below.

[0061] 1) Collection part

[0062] The acquisition part uses multiple channels to collect surface electromyographic signals;

[0063] 2) Amplifier section

[0064] The amplifier part uses a programmable gain amplifier (PGA), which is a very versatile amplifier whose amplification factor can be controlled by program as needed;

[0065] 3) Electrical stimulation

[0066] The electrical stimulation part is controlled by an analog switch and can send electrical pulses to the designated location according to instructions;

[0067] 4) Single-chip microcomputer part The single-chip microcomputer part can receive and process surface electromyography signals, and control the analog switch according to the processed results.

[0068] refer to Figure 1 The whole system is a flexible wireless module, wherein the acquisition part and the amplifier part are completed by one module; and the product is wearable, so it is easy to carry.

[0069] The integrated block in the embodiment of the present invention has the functions of real-time acquisition, small size, light weight, wireless transmission and communication, and the whole system also has the characteristics of small size, portability and safety, and high signal-to-noise ratio.

[0070] When the present invention is used, Figure 7-9 As shown, first install the integrated block 1 and the elastic zipper 2 as needed, take the integrated block 1, if only one integrated block 1 is used, connect the two ends of the elastic zipper 2 to the two sides of the integrated block 1 to form a ring structure, if there are multiple integrated blocks 1, then hang a section of the elastic zipper 2 between two adjacent integrated blocks 1 in the multiple integrated blocks 1, so that the whole forms a ring;

[0071] During installation, the through hole 5-1 on the buckle base plate 5 is passed through the two movable cards 4, that is, the upper ends of the two movable cards 4 pass through the through hole 5-1, and then the front end of the pressing plate 6 is pressed to make the pressing plate 6 rotate around the movable shaft 8, and the V-shaped protrusion 6-1 gradually extends into the V-shaped notch B and gradually presses the two movable cards 4 open, so that the upper ends of the two movable cards 4 are gradually separated, and the outer walls of the two movable cards 4 are gradually pressed against the elastic rubber pad 5-2 (or directly pressed against the inner wall of the through hole 5-1), so that the two movable cards 4 separated at the upper ends are stuck in the through hole 5-1 (if a reference reset torsion spring is set on the reference rotating shaft 3, at this time, the reference reset torsion spring is tightened), and at the same time, the upper end of the locking movable tongue 7 is forced outward (such as Fig. 9 When the locking cam 7 is in the state of being pressed down, the locking cam 7 is turned down (at this time the torsion spring is tightened) until the pressure plate 6 is lowered to the position where the two movable cards 4 are tightened. At this time, under the restoring force of the torsion spring, the locking movable tongue 7 is reset and stuck in the limiting groove 6-2 to temporarily fix the pressure plate 6 (the principle of the locking movable tongue 7 is the same as that of the door lock, and its lower bottom surface is a plane, which is the surface that presses the limiting groove 6-2). In this way, the rapid installation of the integrated block 1 and the elastic zipper 2 is completed; when disassembling, the handle 7-2 is pulled to make the locking movable tongue 7 leave the pressure plate 6, and then the front end of the pressure plate 6 is manually lifted or under the action of the restoring force of the reference reset torsion spring on the reference rotating shaft 3, the two movable cards 4 are automatically and quickly closed, and the pressure plate 6 is forced to move up, and then the pressure plate 6 is lifted up again, and the buckle base plate 5 is removed. The whole process is convenient and fast, and is suitable for daily use.

Claims

1. An active functional electrical stimulation device, characterized in that The system comprises an integrated block (1) and an elastic zipper (2) connected to the integrated block (1), wherein the integrated block (1) and the elastic zipper (2) form a ring-shaped structure that can be put on the body; the integrated block (1) is a strip-shaped structure, and the integrated block (1) is connected to the elastic zipper (2) via a temporary hanging device on the side to form a detachable connection structure; The temporary hanging device comprises a movable clip arranged on the side of the integrated block (1) and a buckle arranged at the end of the elastic zipper (2) and used in conjunction with the movable clip; The movable card comprises a reference rotating shaft (3) and two movable card plates (4) movably arranged on the reference rotating shaft (3), the rear ends of the two movable card plates (4) being sleeved on the reference rotating shaft (3) and being able to rotate with the reference rotating shaft (3) as an axis, so that the front ends of the two movable card plates (4) form a structure capable of opening and closing; The inner sides of the front ends of the two movable cards (4) form an inclined surface (A), and when the two movable cards (4) are closed, the inclined surfaces (A) at the front ends of the two movable cards (4) form a V-shaped notch (B); The buckle comprises a buckle base plate (5), a pressure plate (6) and a locking movable tongue (7); the buckle base plate (5) is provided with a through hole (5-1) for two movable cards (4) to pass through; the rear end of the pressure plate (6) is movably arranged on a column (9) via a movable shaft (8); the pressure plate (6) can rotate around the movable shaft (8); the column (9) is arranged on one side of the through hole (5-1) on the buckle base plate (5); and the bottom of the pressure plate (6) is provided with a V-shaped protrusion (6-1) adapted to the V-shaped notch (B); The locking movable tongue (7) is arranged on the other side of the through hole (5-1); the locking movable tongue (7) is a structure capable of clamping the front end of the pressure plate (6) when in use; the bottom of the locking movable tongue (7) is arranged on the buckle base plate (5) via a bottom shaft (7-1); the locking movable tongue (7) can rotate around the bottom shaft (7-1); and a return torsion spring capable of controlling the locking movable tongue (7) to clamp the pressure plate (6) is arranged on the bottom shaft (7-1); A reference reset torsion spring capable of controlling the closing of the two movable cards (4) is arranged on the reference rotating shaft (3); the upper end surface (C) of the locking movable tongue (7) is a smooth inclined arc surface.

2. An active functional electrical stimulation device according to claim 1, characterized in that : A limit groove (6-2) is provided at the front end of the pressing plate (6) for the locking movable tongue (7) to be clamped; the front end surface of the inner side of the pressing plate (6) is an inclined surface (D) adapted to the upper end surface (C) of the locking movable tongue (7).

3. An active functional electrical stimulation device according to claim 1, characterized in that : An elastic rubber pad (5-2) is arranged on the inner wall of the through hole (5-1), and the position where the elastic rubber pad (5-2) contacts the two movable cards (4) is an inclined surface.

4. An active functional electrical stimulation device according to claim 1, characterized in that : The elastic zipper (2) is a structure made of a flexible material.

5. An active functional electrical stimulation device according to claim 1, characterized in that : The integrated block (1) includes an acquisition module, an amplifier, an electrical stimulation module and a single-chip microcomputer; The acquisition module is connected to the amplifier and the electrical stimulation module, and the amplifier and the electrical stimulation module are connected to the single chip microcomputer.

6. An active functional electrical stimulation device according to claim 5, characterized in that :The acquisition module and the amplifier are completed by one module.

7. An active functional electrical stimulation device according to claim 5, characterized in that : The acquisition module is a module that uses multiple channels to collect surface electromyographic signals of human muscles.

8. An active functional electrical stimulation device according to claim 5, characterized in that The amplifier used is a programmable gain amplifier (PGA).

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