Surface myoelectricity testing system

Abstract

The utility model relates to a surface myoelectricity testing system, and relates to the field of medical instruments, the surface myoelectricity testing system comprises an amplifier, a first electrode and a second electrode, the first electrode and the second electrode are electrically connected with the amplifier through wires; the first electrode comprises a first shell, the second electrode comprises a second shell, the patch of the first electrode is fixedly mounted at the bottom of the first shell, and the patch of the second electrode is fixedly mounted at the bottom of the second shell; and a connecting rope is connected between the first shell and the second shell. According to the invention, the convenience and accuracy of controlling the distance between the patch electrodes by a user can be improved.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and in particular to a surface electromyography testing system. Background Art

[0002] Surface electromyography (sEMG) is a physiological electrical signal generated with muscle contraction. It is the result of bioelectricity generated when nerves and muscles are excited. It is the source of electrical signals that generate muscle force. Surface electromyography has different degrees of correlation with the state and activity of muscle function, and can reflect muscle activity to a certain extent. It has considerable practical value in the ergonomic analysis of muscle activity in the field of ergonomics, muscle function evaluation in the field of rehabilitation medicine, diagnosis of neuromuscular diseases in clinical medicine, and fatigue determination and motion analysis in sports science. However, for research in the field of motion analysis, a single surface electromyography signal is difficult to meet current research needs. Researchers often need to collect multiple physiological parameters of human motion, including surface electromyography signals, at the same time. Acceleration signals reflect the state information of human motion. Combining them with surface electromyography to study the state of human motion is a very popular research direction.

[0003] In the prior art, common surface electromyography testing devices mainly include a tester body, an amplifier, and a host computer, wherein the tester body is connected to the host computer via a data cable, the amplifier is connected to the tester body via a built-in Bluetooth module, and the amplifier is electrically connected to two patch electrodes via wires. During the test, the user fixes the amplifier on an elastic bandage in advance, and then sticks and fixes the two patch electrodes on the skin surface according to the direction of the muscles.

[0004] However, in order to ensure the accuracy of electromyography testing, the user is required to control the distance between the two patch electrodes within 2-3 cm. It is difficult for the user to quickly and accurately control the distance between the two patch electrodes, which affects the accuracy and efficiency of electromyography testing. There is room for improvement. Utility Model Content

[0005] In order to improve the convenience and accuracy of users in controlling the distance between patch electrodes, the present application provides a surface electromyography testing system.

[0006] The surface electromyography testing system provided in this application adopts the following technical solution:

[0007] A surface electromyography testing system comprises an amplifier, a first electrode and a second electrode, wherein the first electrode and the second electrode are electrically connected to the amplifier through wires respectively;

[0008] The first electrode includes a first shell, the second electrode includes a second shell, the patch of the first electrode is fixedly mounted on the bottom of the first shell, and the patch of the second electrode is fixedly mounted on the bottom of the second shell;

[0009] A connecting rope with a fixed length is connected between the first shell and the second shell;

[0010] A mounting box is fixedly connected in the first shell, a mounting column is fixedly connected in the mounting box, a slide bar is slidably mounted on the mounting column, and a first limit block and a second limit block are fixedly connected at both ends of the slide bar, respectively, and the first limit block and the second limit block are located on both sides of the mounting column;

[0011] The first limiting block is fixedly connected to a first fixing block, the second shell is fixedly connected to a second fixing block, both ends of the connecting rope are respectively connected to the first fixing block and the second fixing block, and the first shell and the installation box are provided with wire holes for the connecting rope to pass through.

[0012] By adopting the above technical solution, since a connecting rope is provided between the first shell and the second shell, the length of the connecting rope can be set to 2 cm. When the user sticks the first electrode and the second electrode on the skin, the user can pre-fix the first electrode (or the second electrode), and then stick the second electrode (or the first electrode) on the skin according to the direction of the muscle. Since a connecting rope is provided between the first shell and the second shell, the connecting rope can assist the user to quickly control the distance between the first electrode and the second electrode, which can effectively improve the efficiency and accuracy of sticking the first electrode or the second electrode, and improve the accuracy of the electromyography test. The first fixing block on the first limit block and the second fixing block on the second shell can realize the connection of the connecting rope.

[0013] Preferably, a spring is coaxially sleeved on the slide rod, and the spring is pressed tightly between the mounting column and the second limiting block.

[0014] By adopting the above technical solution, the spring on the slide rod can provide expansion and contraction margin for the connecting rope, thereby reducing the possibility that the connecting rope pulls off the first shell or the second shell during the user's action.

[0015] Preferably, a thin film pressure sensor is fixedly mounted on the side wall of the mounting column, the thin film pressure sensor is located between the mounting column and the spring, and the thin film pressure sensor detects the contact pressure between the spring and the mounting column and outputs a contact pressure signal;

[0016] The signal output terminal of the thin film pressure sensor is connected to a comparator chip, and the comparator chip receives and compares the contact pressure signal, and outputs a high level signal when the sensed pressure reaches a set pressure value;

[0017] An LED lamp is fixedly mounted on the first housing, a signal input end of the LED lamp is signal-connected to a signal output end of the comparator chip, and the LED lamp receives the high-level signal and emits light.

[0018] By adopting the above technical solution, during the process of pasting the first electrode and the second electrode, the user can pre-paste the first electrode, and then move the position of the second electrode along the direction of the muscle so that the connecting rope is straightened and the pressure applied by the spring to the film pressure sensor increases. When the contact pressure increases to exceed the set pressure value, the comparator chip controls the LED light to light up, prompting the user that the distance between the second electrode and the first electrode is moderate.

[0019] Preferably, the bottom of the first shell and the second shell are integrally formed with an extension portion downward, and grooves are respectively formed between the extension portion and the bottom of the first shell and the second shell, and the patches of the first electrode and the second electrode are respectively embedded and installed in the grooves.

[0020] By adopting the above technical solution, the patches of the first electrode and the second electrode are embedded in the groove, which can form a good waterproof effect on the patches.

[0021] In summary, the surface electromyography testing system of the present application includes at least one of the following beneficial technical effects:

[0022] 1. Since a connecting rope is provided between the first shell and the second shell, when the user sticks the first electrode and the second electrode on the skin, the user can fix the first electrode (or the second electrode) in advance, and then stick the second electrode (or the first electrode) on the skin according to the direction of the muscle. Since a connecting rope is provided between the first shell and the second shell, the connecting rope can assist the user to quickly control the distance between the first electrode and the second electrode, which can effectively improve the efficiency and accuracy of sticking the first electrode or the second electrode, and improve the accuracy of electromyography testing;

[0023] 2. The spring on the slide bar can provide a stretch margin for the connecting rope, which can reduce the possibility of the connecting rope pulling off the first shell or the second shell during the user's action;

[0024] 3. In the process of pasting the first electrode and the second electrode, the user can pre-paste the first electrode, and then move the position of the second electrode along the direction of the muscle to straighten the connecting rope and increase the pressure applied by the spring to the film pressure sensor. When the contact pressure increases to exceed the set pressure value, the comparator chip controls the LED light to light up, prompting the user that the distance between the second electrode and the first electrode is moderate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1It is a schematic diagram of an embodiment of the present application for demonstrating the overall structure of a surface electromyography testing system.

[0026] Figure 2 It is a schematic diagram of an embodiment of the present application for illustrating the connection structure of the first electrode and the second electrode.

[0027] Explanation of the reference numerals: 1. amplifier; 2. first electrode; 21. first shell; 22. mounting box; 23. mounting column; 24. slide bar; 241. first limit block; 242. second limit block; 25. wire hole; 26. spring; 27. film pressure sensor; 28. LED lamp; 3. second electrode; 31. second shell; 32. extension portion; 33. groove; 34. patch; 4. connecting rope. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-2 This application is described in further detail.

[0029] Example

[0030] The present application embodiment discloses a surface electromyography testing system. Figure 1 , including an amplifier 1, a first electrode 2 and a second electrode 3, wherein the first electrode 2 and the second electrode 3 are electrically connected to the amplifier 1 through wires respectively.

[0031] The first electrode 2 includes a first shell 21 , the second electrode 3 includes a second shell 31 , the patch 34 of the first electrode 2 is fixedly mounted on the bottom of the first shell 21 , and the patch 34 of the second electrode 3 is fixedly mounted on the bottom of the second shell 31 .

[0032] A connecting rope 4 of fixed length is connected between the first shell 21 and the second shell 31 .

[0033] Since a connecting rope 4 is provided between the first shell 21 and the second shell 31, when the user sticks the first electrode 2 and the second electrode 3 on the skin, the user can fix the first electrode 2 (or the second electrode 3) in advance, and then stick the second electrode 3 (or the first electrode 2) on the skin according to the direction of the muscle. Since a connecting rope 4 is provided between the first shell 21 and the second shell 31, the connecting rope 4 can assist the user to quickly control the distance between the first electrode 2 and the second electrode 3, which can effectively improve the efficiency and accuracy of sticking the first electrode 2 or the second electrode 3, and improve the accuracy of electromyography testing.

[0034] Reference Figure 2A mounting box 22 is fixedly connected in the first shell 21, a mounting column 23 is fixedly connected in the mounting box 22, a slide rod 24 is slidably installed on the mounting column 23, and a first limit block 241 and a second limit block 242 are fixedly connected at both ends of the slide rod 24, respectively, and the first limit block 241 and the second limit block 242 are located on both sides of the mounting column 23.

[0035] The first limiting block 241 is fixedly connected to a first fixing block, the second shell 31 is fixedly connected to a second fixing block, both ends of the connecting rope 4 are connected to the first fixing block and the second fixing block respectively, and the first shell 21 and the installation box 22 are provided with a wire hole 25 for the connecting rope 4 to pass through.

[0036] The first fixing block on the first limiting block 241 and the second fixing block on the second shell 31 can realize the connection of the connecting rope 4 .

[0037] It should be noted that, in the embodiment of the present application, the length of the connecting rope 4 between the first fixing block and the second fixing block is 2 cm.

[0038] Reference Figure 2 The slide bar 24 is coaxially sleeved with a spring 26, which is pressed tightly between the mounting post 23 and the second stopper 242. The spring 26 on the slide bar 24 can provide a stretch margin for the connecting rope 4, thereby reducing the possibility that the connecting rope 4 pulls off the first housing 21 or the second housing 31 during the user's action.

[0039] Reference Figure 2 A thin film pressure sensor 27 is fixedly mounted on the side wall of the mounting column 23. The thin film pressure sensor 27 is located between the mounting column 23 and the spring 26. The thin film pressure sensor 27 detects the contact pressure between the spring 26 and the mounting column 23 and outputs a contact pressure signal.

[0040] The signal output terminal of the film pressure sensor 27 is connected to a comparator chip. The comparator chip receives and compares the contact pressure signal and outputs a high level signal when the sensed pressure reaches a set pressure value.

[0041] An LED lamp 28 is fixedly mounted on the first housing 21 . The signal input terminal of the LED lamp 28 is signal-connected to the signal output terminal of the comparator chip. The LED lamp 28 receives a high-level signal and emits light.

[0042] During the process of pasting the first electrode 2 and the second electrode 3, the user can pre-paste the first electrode 2, and then move the position of the second electrode 3 along the direction of the muscle so that the connecting rope 4 is straightened and the pressure applied by the spring 26 to the film pressure sensor 27 increases. When the contact pressure increases to exceed the set pressure value, the comparator chip controls the LED light 28 to light up, prompting the user that the distance between the second electrode 3 and the first electrode 2 is moderate.

[0043] Reference Figure 2 The bottom of the first shell 21 and the second shell 31 are both integrally formed with an extension portion 32 downward, and grooves 33 are respectively formed between the extension portion 32 and the bottom of the first shell 21 and the second shell 31, and the patches 34 of the first electrode 2 and the second electrode 3 are respectively embedded in the installation grooves 33.

[0044] The patch 34 of the first electrode 2 and the second electrode 3 is embedded in the groove 33 , which can form a good waterproof effect for the patch 34 .

[0045] The implementation principle of a surface electromyography testing system of the embodiment of the present application is as follows: since a connecting rope 4 is connected between the first shell 21 and the second shell 31, when the user sticks the first electrode 2 and the second electrode 3 on the skin, the user can fix the first electrode 2 (or the second electrode 3) in advance, and then stick the second electrode 3 (or the first electrode 2) on the skin according to the direction of the muscle. Since a connecting rope 4 is provided between the first shell 21 and the second shell 31, the connecting rope 4 can assist the user to quickly control the distance between the first electrode 2 and the second electrode 3, which can effectively improve the efficiency and precision of sticking the first electrode 2 or the second electrode 3. The spring 26 on the slide bar 24 can provide a stretch margin for the connecting rope 4, which can reduce the situation where the connecting rope 4 pulls off the first shell 21 or the second shell 31 during the user's action process; in the process of pasting the first electrode 2 and the second electrode 3, the user can pre-paste the first electrode 2, and then move the position of the second electrode 3 along the direction of the muscle to straighten the connecting rope 4 and increase the pressure applied by the spring 26 to the film pressure sensor 27. When the contact pressure increases to exceed the set pressure value, the comparator chip controls the LED light 28 to light up, prompting the user that the distance between the second electrode 3 and the first electrode 2 is moderate.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A surface electromyography testing system, characterized in that: It comprises an amplifier (1), a first electrode (2) and a second electrode (3), wherein the first electrode (2) and the second electrode (3) are electrically connected to the amplifier (1) via wires respectively; The first electrode (2) comprises a first shell (21), the second electrode (3) comprises a second shell (31), the patch (34) of the first electrode (2) is fixedly mounted on the bottom of the first shell (21), and the patch (34) of the second electrode (3) is fixedly mounted on the bottom of the second shell (31); A connecting rope (4) is provided between the first shell (21) and the second shell (31); A mounting box (22) is fixedly connected inside the first shell (21), a mounting column (23) is fixedly connected inside the mounting box (22), a slide bar (24) is slidably mounted on the mounting column (23), and two ends of the slide bar (24) are respectively fixedly connected with a first limit block (241) and a second limit block (242), and the first limit block (241) and the second limit block (242) are located on both sides of the mounting column (23); A first fixing block is fixedly connected to the first limiting block (241), and a second fixing block is fixedly connected to the second shell (31). Two ends of the connecting rope (4) are respectively connected to the first fixing block and the second fixing block, and the first shell (21) and the installation box (22) are both provided with a wire hole (25) for the connecting rope (4) to pass through.

2. A surface electromyography testing system according to claim 1, characterized in that: A spring (26) is coaxially sleeved on the slide rod (24), and the spring (26) is pressed tightly between the mounting column (23) and the second limiting block (242).

3. A surface electromyography testing system according to claim 2, characterized in that: A thin film pressure sensor (27) is fixedly mounted on the side wall of the mounting column (23), and the thin film pressure sensor (27) is located between the mounting column (23) and the spring (26). The thin film pressure sensor (27) detects the contact pressure between the spring (26) and the mounting column (23) and outputs a contact pressure signal; The signal output end of the film pressure sensor (27) is connected to a comparator chip, the comparator chip receives and compares the contact pressure signal, and outputs a high level signal when the sensed pressure reaches a set pressure value; An LED lamp (28) is fixedly mounted on the first housing (21); a signal input end of the LED lamp (28) is signal-connected to a signal output end of the comparator chip; and the LED lamp (28) receives the high-level signal and emits light.

4. A surface electromyography testing system according to claim 1, characterized in that: The bottoms of the first shell (21) and the second shell (31) are integrally formed with an extension portion (32) extending downward, and grooves (33) are respectively formed between the extension portion (32) and the bottoms of the first shell (21) and the second shell (31), and the patches (34) of the first electrode (2) and the second electrode (3) are respectively embedded and installed in the grooves (33).

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