Electromyographic electrode flexible fixing device and electromyographic machine

Abstract

The invention relates to the technical field of electromyography machines, in particular to an electromyography electrode flexible fixing device and an electromyography machine.The electromyography electrode flexible fixing device comprises a shell, a silica gel pad is fixed to the bottom of the shell, a first gear is rotationally arranged in the shell, a cylinder is fixed to the first gear, and an electrode is arranged below the cylinder; a laminated air bag, a spring and a limiting rod fixed to the electrode are sequentially arranged in the barrel from top to bottom, the laminated air bag is fixed to the top wall in the barrel, the two ends of the spring are fixed to the laminated air bag and the limiting rod respectively, and a piston mechanism for inflating and deflating the laminated air bag is arranged on the shell; by means of flexible fixation, after the shell is fixed, the electrode can still be independently adjusted, skin deformation is dynamically compensated, the electrode can be better and actively attached to the surface of skin when making contact with the skin, and therefore the electrode can be flexibly fixed, and the skin can be effectively protected. Meanwhile, the requirements of different body surface curvatures and dynamic deformation are met.

Description

Technical Field

[0001] The present invention relates to the technical field of electromyographs, and specifically to a flexible fixing device for electromyography electrodes and an electromyograph. Background Art

[0002] Electromyography (EMG) technology is an important medical diagnosis and scientific research tool for analyzing the functional state of the neuromuscular system by detecting the electrical signals generated during muscle contraction, and is widely used in fields such as clinical medicine, sports science, rehabilitation medicine, and human-computer interaction. The acquisition quality of electromyography signals (EMG signals) directly depends on the stable contact between the electrode and the skin surface. However, the fixing methods of traditional electromyography electrodes have significant limitations, restricting their application effects in high-dynamic scenarios.

[0003] Traditional electromyography electrodes mostly use fixing frames made of rigid materials (such as plastics or metals) or tape pasting methods, resulting in easy displacement or detachment of the contact surface between the electrode and the skin during human movement, especially poor signal stability during dynamic activities (such as sports rehabilitation and sports training). In addition, rigid materials lack the ability to adapt to body surface morphology (such as joint bending and muscle stretching), easily causing local pressure concentration and discomfort to the subjects. Although existing flexible electrodes use elastic substrate materials (such as silicone and polyurethane films), as disclosed in a myoelectric electrode fixing device and a myoelectric electrode device in Patent CN208988874U, their fixing devices mostly rely on passive elastic deformation and lack an active fitting mechanism, making it difficult to adapt to different body surface curvatures and dynamic deformation requirements, resulting in insufficient signal acquisition consistency. Therefore, we provide a flexible fixing device for electromyography electrodes and an electromyograph to solve the above-mentioned problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a flexible fixing device for electromyography electrodes and an electromyograph to solve the problems in the above-mentioned background art, where traditional electromyography electrodes mostly use fixing frames made of rigid materials (such as plastics or metals) or tape pasting methods, resulting in easy displacement or detachment of the contact surface between the electrode and the skin during human movement, especially poor signal stability during dynamic activities (such as sports rehabilitation and sports training), and although existing flexible electrodes use elastic substrate materials (such as silicone and polyurethane films), their fixing devices mostly rely on passive elastic deformation and lack an active fitting mechanism, making it difficult to adapt to different body surface curvatures and dynamic deformation requirements, resulting in insufficient signal acquisition consistency.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A flexible fixing device for electromechanical electrodes, comprising a shell, a silicone pad is fixed to the bottom of the shell, a first gear is rotatably arranged in the shell, a cylinder is fixed on the first gear, an electrode is arranged below the cylinder, a stacked airbag, a spring and a limit rod fixed to the electrode are arranged in sequence from top to bottom inside the cylinder, wherein the stacked airbag is fixed to the top wall inside the cylinder, two ends of the spring are respectively fixed to the stacked airbag and the limit rod, and a piston mechanism for inflating and deflation of the stacked airbag is arranged on the shell; A main shaft is rotatably set on the shell, and the main shaft cooperates with the first gear and the stacked airbag through a first linkage structure. When the main shaft rotates, it will drive the first gear to rotate at a fixed angle intermittently and inflate and deflate the stacked airbag intermittently. One intermittent periodic action is that the stacked airbag is deflated once, the first gear rotates at a fixed angle once, and then the stacked airbag is inflated again.

[0006] A flexible fixing device for myoelectric electrodes as described above: a motor is fixed on the shell, and the output end of the motor is connected to the main shaft through a coupling to drive the main shaft to rotate.

[0007] A flexible fixing device for myoelectric electrodes as described above: the piston mechanism includes a piston cylinder fixed in a shell, a piston movably clamped in the piston cylinder, a hose connected to the stacked airbag is fixed on the piston cylinder, and the piston reciprocates in the piston cylinder to inflate and deflate the stacked airbag.

[0008] A flexible fixing device for an electromyographic electrode as described above: the first linkage structure includes a first rotating rod and a second rotating rod rotatably arranged on the shell, the main shaft and the first rotating rod and the second rotating rod are coordinated through an intermittent mechanism, and the main shaft rotates while driving the first rotating rod and the second rotating rod to rotate intermittently at a fixed angle respectively, and when the first rotating rod rotates, the second rotating rod does not rotate, and when the second rotating rod rotates, the first rotating rod does not rotate, the first rotating rod and the first gear are transmitted through a first gear mechanism, and when the first rotating rod rotates, the first gear is driven to rotate, the second rotating rod and the piston are coordinated through a second linkage structure, and when the second rotating rod rotates, the piston is driven to reciprocate in the piston cylinder.

[0009] A flexible fixing device for an electromyographic electrode as described above: the intermittent mechanism includes a driving wheel fixed on the main shaft, a second gear fixed on the first rotating rod and a second driven wheel fixed on the second rotating rod, and the two sides of the driving wheel cooperate with the first driven wheel and the second driven wheel for transmission respectively.

[0010] A flexible fixing device for an electromyographic electrode as described above: the first gear mechanism includes a third gear rotatably arranged on the housing and a second gear fixed on the first rotating rod, and the two sides of the third gear are respectively meshed with the first gear and the second gear.

[0011] An electromyogram electrode flexible fixing device as described above: The second linkage structure includes a third rotating rod rotatably arranged on the housing. The third rotating rod is cooperated with the second rotating rod through a second gear mechanism. When the second rotating rod rotates, it will drive the third rotating rod to rotate. A rotating wheel is fixed on the third rotating rod. A swing arm is hinged on the rotating wheel. A connecting rod is arranged between the swing arm and the piston. The two ends of the connecting rod are respectively hinged with the swing arm and the piston.

[0012] An electromyogram electrode flexible fixing device as described above: The second gear mechanism includes a fourth gear fixed on the second rotating rod and a fifth gear fixed on the third rotating rod. The fourth gear meshes with the fifth gear.

[0013] An electromyogram electrode flexible fixing device as described above: A pressure sensor for detecting the magnitude of the pressure received when the electrode contacts the body is fixedly installed at the bottom of the electrode.

[0014] An electromyograph includes an electromyograph which is connected to the electromyogram electrode flexible fixing device through a wire.

[0015] Compared with the prior art, the beneficial effects of the present invention are: When in use, the housing is pasted on the skin surface through a silica gel pad. The silica gel pad is a flexible material and can better fit on the skin surface when contacting the skin, and is not likely to fall off during human movement; In addition, an electrode is provided below the cylinder body of the present invention. The electrode fits on the surface of the body to detect the electrical signals generated during muscle contraction and analyze the functional state of the neuromuscular system. A laminated airbag, a spring and a limiting rod fixed to the electrode are sequentially arranged from top to bottom inside the cylinder body. A piston mechanism for inflating and deflating the laminated airbag is arranged on the housing. Since the laminated airbag can be inflated and deflated, when the laminated airbag is inflated, it will expand and squeeze the spring. The spring will transmit the squeezing force to the limiting rod to drive the limiting rod to move downward in the cylinder body, and then drive the electrode to move downward and press tightly on the body surface. Therefore, when the housing of the present invention is pasted on the body skin surface, the electrode is not rigidly fixed on the body surface. By inflating and deflating the laminated airbag to expand or contract, the spring is driven to expand and contract, so that the electrode is flexibly fixed on the body surface. The flexible fixing enables the electrode to still be independently adjusted after the housing is fixed, dynamically compensates for skin deformation, can better actively fit on the skin surface when contacting the skin, and at the same time adapts to different body surface curvatures and dynamic deformation requirements. Moreover, the flexible fixing makes the housing more comfortable to wear; In addition, a main shaft is rotatably arranged on the shell of the present invention. When the main shaft rotates, it will drive the first gear to rotate intermittently by a fixed angle and intermittently inflate and deflate the laminated airbag. One intermittent cycle action is that after the laminated airbag deflates once, the first gear rotates by a fixed angle once, and then the laminated airbag inflates again. That is, when the electrode of the present invention is attached to the body surface, driving the main shaft to rotate can drive the laminated airbag to deflate and then drive the first gear to rotate by a fixed angle once, and then the laminated airbag inflates again to make the electrode move downward and press tightly on the skin surface. Thus, by repeating the above actions, when the electrode still cannot be closely attached to the body surface to collect electrical signals after the shell is installed and the laminated airbag is inflated, the electrode can perform an active circumferential movement on the body surface to change the contact position with the body, and then after the shell is installed, the electrode has the function of autonomously adjusting the position, so as to find a suitable collection point position on the body surface, thereby adapting to different body surface curvatures and dynamic deformation requirements. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of an electromyogram electrode flexible fixing device and an electromyograph.

[0017] Figure 2 It is a schematic structural diagram of an electromyogram electrode flexible fixing device from a first perspective.

[0018] Figure 3 It is a schematic structural diagram of an electromyogram electrode flexible fixing device from a second perspective.

[0019] Figure 4 It is a schematic internal structure diagram of the shell of an electromyogram electrode flexible fixing device.

[0020] Figure 5 It is an electromyogram electrode flexible fixing device Figure 4 Schematic diagram of the disassembled partial structure.

[0021] Figure 6 It is an electromyogram electrode flexible fixing device Figure 5 Schematic diagram of the disassembled partial structure.

[0022] Figure 7 It is an electromyogram electrode flexible fixing device Figure 6 Schematic structural diagram from another perspective.

[0023] Figure 8 It is a schematic partial structure diagram of an electromyogram electrode flexible fixing device.

[0024] Figure 9 It is a schematic structural diagram of the cooperation and installation of the cylinder body and the electrode of an electromyogram electrode flexible fixing device.

[0025] Figure 10This is a schematic diagram of the internal structure of a flexible fixing device for electromyographic electrodes after the cylinder is cut open.

[0026] In the figure: 1. shell; 2. silicone pad; 3. first gear; 4. cylinder; 5. limit rod; 6. electrode; 7. stacked airbag; 8. spring; 9. main shaft; 10. first rotating rod; 11. second rotating rod; 12. second gear; 13. third gear; 14. first driven wheel; 15. second driven wheel; 16. third rotating rod; 17. fourth gear; 18. fifth gear; 19. rotating wheel; 20. swing arm; 21. piston cylinder; 22. connecting rod; 23. piston; 24. hose; 25. motor; 26. pressure sensor; 27. electromyograph; 28. wire; 29. ​​driving wheel. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] See also Figures 1 to 10 As an embodiment of the present invention, a flexible fixing device for myoelectric electrodes and an electromyograph include a housing 1, a silicone pad 2 is fixed to the bottom of the housing 1, a first gear 3 is rotatably arranged in the housing 1, a cylinder 4 is fixed on the first gear 3, an electrode 6 is arranged below the cylinder 4, and a stacked airbag 7, a spring 8 and a limit rod 5 fixed to the electrode 6 are arranged in sequence from top to bottom inside the cylinder 4, wherein the stacked airbag 7 is fixed to the top wall inside the cylinder 4, and the two ends of the spring 8 are respectively fixed to the stacked airbag 7 and the limit rod 5, and a piston mechanism for inflating and deflation of the stacked airbag 7 is arranged on the housing 1; A main shaft 9 is rotatably arranged on the shell 1, and the main shaft 9 cooperates with the first gear 3 and the stacked airbag 7 through a first linkage structure. When the main shaft 9 rotates, it will drive the first gear 3 to rotate at a fixed angle intermittently and inflate and deflate the stacked airbag 7 intermittently. One intermittent periodic action is that the stacked airbag 7 is deflated once, the first gear 3 rotates at a fixed angle once, and then the stacked airbag 7 is inflated again.

[0029] In this embodiment, during use, the housing 1 is adhered to the skin surface through the silica gel pad 2. The silica gel pad 2 is made of a flexible material, which can better fit on the skin surface when contacting the skin and is not likely to fall off during human movement. An electrode 6 is provided below the cylinder body 4. The electrode 6 is attached to the surface of the muscle to detect the electrical signal generated during muscle contraction and analyze the functional state of the neuromuscular system. Inside the cylinder body 4, a laminated airbag 7, a spring 8, and a limiting rod 5 fixed to the electrode 6 are sequentially arranged from top to bottom. A piston mechanism for inflating and deflating the laminated airbag 7 is provided on the housing 1. Since the laminated airbag 7 can be inflated and deflated, when the laminated airbag 7 is inflated, it will expand and squeeze the spring 8. The spring 8 will transmit the squeezing force to the limiting rod 5, driving the limiting rod 5 to move downward in the cylinder body 4, and then driving the electrode 6 to move downward and only press tightly on the surface of the muscle. Thus, when the housing 1 is adhered to the surface of the muscle skin, the electrode 6 is not rigidly fixed on the surface of the muscle. By inflating and deflating the laminated airbag 7 to expand or contract, the spring 8 is telescoped to flexibly fix the electrode 6 on the surface of the muscle. The flexible fixation enables the electrode 6 to still perform independent displacement adjustment after the housing 1 is fixed, dynamically compensating for skin deformation, better actively fitting on the skin surface when contacting the skin, adapting to different body surface curvatures and dynamic deformation requirements at the same time, and making the housing 1 more comfortable to wear due to the flexible fixation; In addition, a main shaft 9 is rotatably provided on the housing 1. When the main shaft 9 rotates, it will drive the first gear 3 to intermittently rotate at a fixed angle and intermittently inflate and deflate the laminated airbag 7. One intermittent cycle action is that the laminated airbag 7 deflates once and then the first gear 3 rotates at a fixed angle once, and then the laminated airbag 7 inflates again. That is, in the present invention, when the electrode 6 is attached to the surface of the muscle, driving the main shaft 9 to rotate can drive the laminated airbag 7 to deflate and then drive the first gear 3 to rotate at a fixed angle once, and then the laminated airbag 7 inflates again to make the electrode 6 move downward and press tightly on the skin surface. Thus, by repeating the above actions, when the electrode 6 still cannot be closely attached to the surface of the muscle to collect electrical signals after the housing 1 is installed and the laminated airbag 7 is inflated, the electrode 6 can perform an active circular motion on the surface of the muscle to change the contact position with the muscle, and thus the electrode 6 has the function of independently changing the position and adjusting after the housing 1 is installed.

[0030] As a further solution of the present invention, a motor 25 is fixed on the housing 1. The output end of the motor 25 is connected to the main shaft 9 through a coupling to drive the main shaft 9 to rotate.

[0031] In this embodiment, the motor 25 is electrically connected to an external power supply through a wire. Starting the motor 25 can drive the main shaft 9 to rotate. An encoder is installed on the motor 25, and the encoder is electrically connected to the plc in the external electromyograph 27. The encoder and the plc in the external electromyograph 27 are used to control the motor 25 to rotate at a fixed angle and rotate forward and backward to drive the first gear 3 to rotate forward and backward.

[0032] As a further solution of the present invention, the piston mechanism includes a piston cylinder 21 fixed in the housing 1, a piston 23 is movably connected in the piston cylinder 21, a hose 24 connected to the stacked airbag 7 is fixed on the piston cylinder 21, and the piston 23 moves back and forth in the piston cylinder 21 to inflate and deflate the stacked airbag 7.

[0033] In this embodiment, when the piston 23 moves in the piston cylinder 21, the hose 24 can be used to inflate the stacked airbag 7, causing the stacked airbag 7 to expand and squeeze the spring 8, driving the electrode 6 to move downward. In addition, when the piston 23 moves in the piston cylinder 21 to the outside of the piston cylinder 21, the hose 24 can be used to evacuate the inside of the stacked airbag 7, causing the stacked airbag 7 to shrink, thereby elastically restoring the spring 8 and pulling the electrode 6 upward.

[0034] As a further scheme of the present invention, the first linkage structure includes a first rotating rod 10 and a second rotating rod 11 rotatably arranged on the shell 1, and the main shaft 9 and the first rotating rod 10 and the second rotating rod 11 are coordinated through an intermittent mechanism. When the main shaft 9 rotates, it will drive the first rotating rod 10 and the second rotating rod 11 to rotate intermittently at a fixed angle respectively, and when the first rotating rod 10 rotates, the second rotating rod 11 does not rotate, and when the second rotating rod 11 rotates, the first rotating rod 10 does not rotate. The first rotating rod 10 and the first gear 3 are transmitted through a first gear mechanism, and when the first rotating rod 10 rotates, the first gear 3 is driven to rotate. The second rotating rod 11 and the piston 23 are coordinated through a second linkage structure, and when the second rotating rod 11 rotates, the piston 23 is driven to reciprocate in the piston cylinder 21.

[0035] In this embodiment, the main shaft 9 and the first rotating rod 10 and the second rotating rod 11 are coordinated through an intermittent mechanism. When the main shaft 9 rotates, it will drive the first rotating rod 10 and the second rotating rod 11 to rotate intermittently at a fixed angle respectively. When the first rotating rod 10 rotates at a fixed angle, it will drive the first gear 3 to rotate at a fixed angle. When the first gear 3 rotates at a fixed angle, it will drive the electrode 6 below to rotate at a fixed angle. When the second rotating rod 11 rotates, it will drive the piston 23 to move back and forth in the piston cylinder 21. The stacked airbag 7 is inflated and deflated by the reciprocating movement of the piston 23 in the piston cylinder 21. Therefore, the above-mentioned structural coordination can realize that during the process of the main shaft 9 rotating at a fixed angle once, the electrode 6 moves upward and breaks away from the contact with the skin surface after the stacked airbag 7 is deflated. After that, after the electrode 6 rotates at a fixed angle once again, the stacked airbag 7 is inflated again to drive the electrode 6 to move downward and contact another skin surface. By repeating the fixed angle rotation of the main shaft 9, the position of the electrode 6 in contact with the skin can be continuously changed, thereby realizing the electrode signal collection requirement of automatically changing the position of the electrode 6 on the skin surface.

[0036] As a further solution of the present invention, the intermittent mechanism includes a driving wheel 29 fixed on the main shaft 9, a second gear 12 fixed on the first rotating rod 10, and a second driven wheel 15 fixed on the second rotating rod 11. The two sides of the driving wheel 29 are respectively engaged with the first driven wheel 14 and the second driven wheel 15 for transmission.

[0037] In this embodiment, when the main shaft 9 rotates one week, it will drive the driving wheel 29 to rotate one week. By using the transmission cooperation between the two sides of the driving wheel 29 and the first driven wheel 14 and the second driven wheel 15 respectively, when the driving wheel 29 rotates one week, it can first drive the second driven wheel 15 to rotate 90°, and then drive the first driven wheel 14 to rotate 90°. Then, when the main shaft 9 continuously rotates, it can drive the second driven wheel 15 and the first driven wheel 14 to rotate intermittently respectively, that is, drive the second rotating rod 11 and the first rotating rod 10 to rotate 90°. When the second rotating rod 11 rotates, it will drive the piston 23 to reciprocate in the piston cylinder 21. Here, when the second rotating rod 11 rotates 90°, it drives the piston 23 to reciprocate in the piston cylinder 21 once, that is, when the second rotating rod 11 rotates 90°, the laminated airbag 7 is inflated and deflated once. And when the first rotating rod 10 rotates 90°, the first gear 3 is driven to rotate by a fixed angle once.

[0038] As a further solution of the present invention, the first gear mechanism includes a third gear 13 rotatably arranged on the housing 1 and a second gear 12 fixed on the first rotating rod 10. The two sides of the third gear 13 are respectively meshed with the first gear 3 and the second gear 12.

[0039] In this embodiment, when the first rotating rod 10 rotates, it will drive the second gear 12 to rotate. By using the meshing of the two sides of the third gear 13 with the first gear 3 and the second gear 12 respectively, when the second gear 12 rotates, it will drive the third gear 13 to rotate, and when the third gear 13 rotates, it will drive the first gear 3 to rotate.

[0040] As a further solution of the present invention, the second linkage structure includes a third rotating rod 16 rotatably arranged on the housing 1. The third rotating rod 16 is cooperated with the second rotating rod 11 through a second gear mechanism. When the second rotating rod 11 rotates, it will drive the third rotating rod 16 to rotate. A runner 19 is fixed on the third rotating rod 16, and a swing arm 20 is hinged on the runner 19. A connecting rod 22 is arranged between the swing arm 20 and the piston 23, and the two ends of the connecting rod 22 are respectively hinged with the swing arm 20 and the piston 23.

[0041] In this embodiment, when the second rotating rod 11 rotates, it will drive the third rotating rod 16 to rotate. When the third rotating rod 16 rotates, it will drive the rotating wheel 19 to rotate. When the rotating wheel 19 rotates, it will drive the swing arm 20 to swing, thereby pulling the connecting rod 22 to reciprocate in the piston cylinder 21, driving the piston 23 to reciprocate in the piston cylinder 21, and inflating and deflating the laminated airbag 7 through the reciprocating movement of the piston 23 in the piston cylinder 21 in cooperation with the hose 24.

[0042] As a further solution of the present invention, the second gear mechanism includes a fourth gear 17 fixed on the second rotating rod 11 and a fifth gear 18 fixed on the third rotating rod 16, and the fourth gear 17 meshes with the fifth gear 18.

[0043] In this embodiment, when the second rotating rod 11 rotates, it will drive the fourth gear 17 to rotate. Since the fourth gear 17 meshes with the fifth gear 18, it will drive the fifth gear 18 to rotate, and further drive the third rotating rod 16 to rotate.

[0044] As a further solution of the present invention, a pressure sensor 26 for detecting the magnitude of the pressure received when the electrode 6 contacts the body is fixedly installed at the bottom of the electrode 6.

[0045] In this embodiment, the pressure sensor 26 is electrically connected to the plc in the external electromyograph 27. The contact pressure between the electrode 6 and the skin is monitored in real time through the pressure sensor 26. When uneven pressure is detected, the plc controls the motor 25 to adjust, changing the position of the electrode 6 and the volume of the corresponding laminated airbag 7 to dynamically compensate for skin deformation.

[0046] As a further solution of the present invention, an electromyograph includes an electromyograph 27, and the electromyograph 27 is flexibly fixed to the electromyography electrode device through a wire 28.

[0047] In this embodiment, the pressure sensor 26 and the motor 25 are respectively electrically connected to the plc provided in the electromyograph 27 through the wire 28.

[0048] The working principle of the invention is as follows: When in use, an adhesive is coated on the bottom of the silica gel pad 2, and the housing 1 is pasted on the skin surface through the silica gel pad 2. The silica gel pad 2 is made of a flexible material and can deform to better fit on the skin surface when in contact with the skin, and is not likely to fall off during human movement. An electrode 6 is arranged below the cylinder body 4, and the electrode 6 is used to fit on the surface of the muscle body to detect the electrical signals generated during muscle contraction, and analyze the functional state of the neuromuscular system. Inside the cylinder body 4, a laminated airbag 7, a spring 8, and a limiting rod 5 fixed to the electrode 6 are sequentially arranged from top to bottom. A piston mechanism for inflating and deflating the laminated airbag 7 is arranged on the housing 1. Since the laminated airbag 7 can be inflated and deflated, when the laminated airbag 7 is inflated, it will expand and squeeze the spring 8. The spring 8 will transmit the squeezing force to the limiting rod 5, driving the limiting rod 5 to move downward in the cylinder body 4, and then driving the electrode 6 to move downward and only press tightly on the surface of the muscle body. Thus, when the housing 1 is pasted on the skin surface of the muscle body, the electrode 6 is not rigidly fixed on the surface of the muscle body. By inflating and deflating the laminated airbag 7 to expand or contract, the spring 8 is telescoped to flexibly fix the electrode 6 on the surface of the muscle body. The flexible fixation enables the electrode 6 to still perform displacement independent adjustment after the housing 1 is fixed, dynamically compensates for skin deformation, can better actively fit on the skin surface when in contact with the skin, and at the same time adapts to different body surface curvatures and dynamic deformation requirements, and the flexible fixation makes the housing 1 more comfortable to wear. In addition, a main shaft 9 is rotatably arranged on the housing 1. When the main shaft 9 rotates, it will drive the first gear 3 to intermittently rotate at a fixed angle and intermittently inflate and deflate the laminated airbag 7. One intermittent cycle action is that the laminated airbag 7 deflates once and then the first gear 3 rotates at a fixed angle once, and then the laminated airbag 7 is inflated again. That is, when the electrode 6 of the present invention fits on the surface of the muscle body, driving the main shaft 9 to rotate can drive the laminated airbag 7 to deflate and then drive the first gear 3 to rotate at a fixed angle once, and then the laminated airbag 7 is inflated again to make the electrode 6 move downward and press tightly on the skin surface. Thus, by repeating the above actions, after the housing 1 is installed and the laminated airbag 7 is inflated, the pressure sensor 26 monitors the contact pressure between the electrode 6 and the skin in real time. When the contact pressure is insufficient and the electrode 6 still cannot closely adhere to the surface of the muscle body to collect electrical signals, the electrode 6 can perform active circular motion on the surface of the muscle body to change the contact position with the muscle body. Therefore, after the housing 1 is installed, the electrode 6 has the function of independently changing the position for adjustment.

[0049] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic features of the present invention, all technical solutions that can be implemented in other specific forms are included in the present invention.

Claims

1. An electromyogram electrode flexible fixing device, comprising a housing, characterized in that, A silicone pad is fixed to the bottom of the shell, a first gear is rotatably arranged in the shell, a cylinder is fixed on the first gear, an electrode is arranged below the cylinder, and a stacked airbag, a spring and a limit rod fixed to the electrode are arranged in sequence from top to bottom inside the cylinder, wherein the stacked airbag is fixed to the top wall inside the cylinder, and the two ends of the spring are respectively fixed to the stacked airbag and the limit rod, and a piston mechanism for inflating and deflation of the stacked airbag is arranged on the shell; A main shaft is rotatably set on the shell, and the main shaft cooperates with the first gear and the stacked airbag through a first linkage structure. When the main shaft rotates, it will drive the first gear to rotate at a fixed angle intermittently and inflate and deflate the stacked airbag intermittently. One intermittent periodic action is that the stacked airbag is deflated once, the first gear rotates at a fixed angle once, and then the stacked airbag is inflated again.

2. The flexible fixing device for electromyogram electrodes according to claim 1, wherein A motor is fixedly mounted on the housing, an output end of the motor is connected to the main shaft through a coupling to drive the main shaft to rotate, and an encoder for measuring the rotation angle and speed of the motor is fixedly mounted on the motor.

3. The flexible fixing device for electromyography electrodes according to claim 1, wherein The piston mechanism comprises a piston cylinder fixed in a housing, a piston movably clamped in the piston cylinder, a hose connected to the stacked airbag is fixed on the piston cylinder, and the piston reciprocates in the piston cylinder to inflate and deflate the stacked airbag.

4. The flexible fixing device for electromyogram electrodes according to claim 3, characterized in that The first linkage structure includes a first rotating rod and a second rotating rod rotatably arranged on the shell, and the main shaft and the first rotating rod and the second rotating rod are coordinated through an intermittent mechanism. When the main shaft rotates, it will drive the first rotating rod and the second rotating rod to rotate intermittently at a fixed angle respectively, and when the first rotating rod rotates, the second rotating rod does not rotate, and when the second rotating rod rotates, the first rotating rod does not rotate. The first rotating rod and the first gear are transmitted through a first gear mechanism, and the first rotating rod will drive the first gear to rotate when the first rotating rod rotates. The second rotating rod and the piston are coordinated through a second linkage structure, and when the second rotating rod rotates, it will drive the piston to reciprocate in the piston cylinder.

5. The myoelectric electrode flexible fixing device according to claim 4, wherein, The intermittent mechanism comprises a driving wheel fixed on the main shaft, a second gear fixed on the first rotating rod and a second driven wheel fixed on the second rotating rod. Both sides of the driving wheel cooperate with the first driven wheel and the second driven wheel for transmission.

6. The flexible fixing device for electromyogram electrodes according to claim 5, wherein The first gear mechanism comprises a third gear rotatably arranged on the housing and a second gear fixed on the first rotating rod, and two sides of the third gear are respectively meshed with the first gear and the second gear.

7. The flexible fixing device for electromyogram electrodes according to claim 5, characterized in that, The second linkage structure includes a third rotating rod rotatably arranged on the shell, and the third rotating rod cooperates with the second rotating rod through a second gear mechanism. When the second rotating rod rotates, the third rotating rod will be driven to rotate. A rotating wheel is fixed on the third rotating rod, and a swing arm is hinged on the rotating wheel. A connecting rod is arranged between the swing arm and the piston, and the two ends of the connecting rod are respectively hinged to the swing arm and the piston.

8. The flexible fixing device for electromyogram electrode according to claim 7, wherein, The second gear mechanism includes a fourth gear fixed on the second rotating rod and a fifth gear fixed on the third rotating rod, and the fourth gear is meshed with the fifth gear.

9. The flexible fixing device for electromyogram electrodes according to claim 1, characterized in that, A pressure sensor for detecting the magnitude of the pressure received when the electrode contacts the body is fixedly installed at the bottom of the electrode to monitor the contact pressure between the electrode and the skin in real time.

10. An electromyograph, characterized in that, It includes an electromyograph, and the electromyograph is connected to the flexible fixing device of the electromyogram electrode as described in any one of claims 1-9 through a wire, wherein the pressure sensor and the motor are respectively electrically connected to a PLC arranged in the electromyograph through wires.

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