Myoelectricity detection device for nerve electrophysiological examination

Abstract

The invention relates to the technical field of medical auxiliary instruments, and discloses a myoelectricity detection device for neurophysiological examination, which comprises a myoelectricity needle, a patch cord, a hidden pen and blood suction cotton. The needle electrode is hidden through the hiding pen, so that a patient can be prevented from feeling faint when seeing needle head operation, the psychological burden of the patient in electromyography can be relieved, and movement of the needle head in all directions in muscles of the patient is not affected; the device is suitable for various types of needle electrodes, and the needle inserting depth can be judged according to the position of the hand shifting plate; the front check block and the rear check block are arranged, so that a doctor can more conveniently install a needle electrode and carry out subsequent operation, and the operation process is more stable and safer; the designed blood absorbing cotton can absorb exuded blood when the needle head punctures the skin of a patient and can press a wound after one site is examined, the situation that the blood flows out to contaminate clothes of the patient is prevented, and needle insertion is not affected.

Description

Technical Field

[0001] The present invention relates to the technical field of medical auxiliary instruments, and particularly relates to an electromyogram detection device for nerve electrophysiological examination. Background Art

[0002] Electromyogram examination is to record the electrical activities of nerves and muscles, mainly used to judge whether the nerves and muscles are normal. It is an objective examination method for diagnosing and differentiating nerve, muscle, and neuromuscular junction diseases. Electromyogram examination usually includes two parts: "nerve" electromyogram (nerve conduction examination) and "muscle" electromyogram (needle electrode electromyogram). Needle electrode electromyogram examination is to insert a needle electrode into the muscle to be examined and observe the electrical activities of the muscle during relaxation and voluntary contraction.

[0003] When performing needle electrode examination, it is often necessary to insert several needles or even dozens of needles, and the patient will be pricked by the needle and bleed. Although the amount of bleeding is small, if the doctor does not handle it in time, the blood will stain the patient's clothes. Such a situation is a bad experience for the patient both physically and psychologically, and sometimes even causes a psychological shadow to the patient, which is not conducive to later reexamination. In addition, some patients have a reaction of fainting at the sight of needles, and symptoms such as dizziness, palpitation, shortness of breath, abdominal discomfort, nausea, etc. will occur during the examination, and even syncope may occur in severe cases. And during the needle electrode examination, the patient needs to cooperate to contract or relax the muscle, so it is very necessary to solve the problem of patients fainting at the sight of needles. Summary of the Invention

[0004] Based on the above problems, the present invention provides an electromyogram detection device for nerve electrophysiological examination. This device can hide the needle electrode, is applicable to various models of needle electrodes, facilitates the doctor to judge the needle insertion depth, can absorb blood stains, and can press the wound after the examination of one site is completed.

[0005] To solve the above technical problems, the present invention provides the following technical solutions:

[0006] An electromyogram detection device for nerve electrophysiological examination, comprising an electromyogram needle and a patch cord. The electromyogram needle includes a needle body and a connecting head. The patch cord includes a needle-end plug, an instrument-end plug, and a wire disposed between the needle-end plug and the instrument-end plug. It further includes a hiding pen and a blood-absorbing cotton detachably connected to one end of the hiding pen. A through hole one for the needle body to pass through is provided in the middle of the blood-absorbing cotton;

[0007] The hidden pen is square and includes a main body and a side cover. The main body is provided with a second perforation passing through the length direction of the main body, and one side of the second perforation facing the side cover is communicated with the side cover. Two clamping blocks are arranged in the second perforation relatively and can both slide along the length direction of the main body. Clamping grooves are arranged on the surfaces of the two clamping blocks facing each other, and notches are arranged on the surfaces of the clamping grooves facing the side cover. The notches are arranged at one end of the clamping grooves far away from the blood-absorbing cotton. Wing rods that can enter the clamping grooves from the notches are arranged on both sides of the connecting head.

[0008] Positioning grooves are arranged at both ends of the side wall of the main body facing the side cover, and filling blocks that can be embedded into the positioning grooves are arranged at positions of the side cover opposite to the positioning grooves. A notch passing through the top of the connecting head is arranged at the top of the surface of the connecting head facing the side cover, and a T-shaped groove communicated with the notch is arranged at the bottom end of the surface of the needle-end plug facing the side cover. A strip-shaped hole arranged along the length direction of the main body is arranged in the middle of the side cover. A T-shaped block that can be entirely embedded into the T-shaped groove and the notch is arranged on the side of the side cover facing the main body. A second slider is arranged on the surface of the T-shaped block facing the side cover and passes through the strip-shaped hole. A hand-operating plate arranged along the width direction of the side cover is arranged at one end of the second slider far away from the T-shaped block.

[0009] Further, the blood-absorbing cotton is in the shape of an inverted frustum of a cone. Adhesive strips are arranged on both side walls of the blood-absorbing cotton. The adhesive strips include fixed ends connected to the side walls of the blood-absorbing cotton and free ends not connected to the side walls of the blood-absorbing cotton. Adhesive is arranged at one end of the fixed end close to the free end and the bottom surface of the free end. A protective layer covers the surface of the adhesive. The length of one free end is longer than that of the other free end.

[0010] Further, sliding grooves one are arranged on both inner walls of the second perforation along the length direction of the main body. Sliders one are arranged in the sliding grooves one, and one end of the slider one extending out of the sliding groove one is bonded to the clamping block.

[0011] Further, the positioning grooves are located at one end of the sliding grooves one far away from the blood-absorbing cotton. An inner cavity located inside the side wall of the main body and extending towards the side where the sliding grooves one are located is arranged on one side of the positioning grooves far away from the side cover. A third perforation communicated with the inner cavity is arranged on one side inner wall of the sliding grooves one close to the inner cavity. A first spring is arranged on one side inner wall of the inner cavity far away from the positioning grooves. A pressing plate located inside the inner cavity is arranged at one end of the first spring close to the positioning grooves. A front stop block extending into the positioning groove is arranged at one end of the surface of the pressing plate facing the positioning groove close to the positioning groove. A rear stop block extending into the sliding grooves one after passing through the third perforation is arranged at one end of the surface of the pressing plate facing the positioning groove close to the third perforation. The slider one is located between the front stop block and the rear stop block. When the front stop block is pressed into the inner cavity by the filling block, the rear stop block will also enter the inner cavity.

[0012] On the inner wall of one side of the notch close to the needle body, there is a groove. On the inner wall of one side of the groove close to the needle body, there is a clamping groove. At the bottom of the T-shaped block, there is a clamping protrusion that can be engaged with the clamping groove, and the bottom end of the T-shaped block can slide into the groove. At both ends of the side cover, there are through holes four for the corresponding filling blocks to pass through. On both inner walls of the through hole four, there are sliding grooves two. In the sliding groove two, there is a sliding block three. On the inner wall of one side of the sliding groove three close to the main body, there is a spring two. One end of the spring two close to the sliding block three is bonded to the sliding block three. The surfaces of both ends of the filling block facing away from the main body and away from the blood-sucking cotton and close to the blood-sucking cotton are both arc surfaces. The surfaces of both ends of the manual dial plate facing the side cover and away from the blood-sucking cotton and close to the blood-sucking cotton are also both arc surfaces. When the clamping protrusion is engaged with the clamping groove, the manual dial plate just presses on the filling block and jointly presses the front stop block into the inner cavity with the filling block.

[0013] Furthermore, on the side wall of the side cover facing away from the main body, there is a scale arranged along the length direction of the main body, and the scale is arranged on one side of the strip-shaped hole.

[0014] Furthermore, on the surface of the manual dial plate facing away from the side cover, there are transverse stripes.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention hides the needle electrode through the pen, which can prevent the patient from seeing the needle operation and having a fainting reaction, can reduce the psychological burden of the patient during electromyography, and does not affect the movement of the needle in all directions within the patient's muscle. The present invention is applicable to various types of needle electrodes, and the depth of needle insertion can be judged through the position of the manual dial plate. The front stop block and the rear stop block provided in the present invention are more convenient for the doctor to install the needle electrode and perform subsequent operations, and the operation process is more stable and safe. The designed blood-sucking cotton can absorb the exuded blood when the needle pierces the patient's skin, and can also press the wound after the inspection at one site to prevent the blood from flowing out and soiling the patient's clothes, and does not affect the needle insertion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the front view of the external structure of the present invention;

[0017] Figure 2 is the front view of the external structure of the main body of the present invention;

[0018] Figure 3 is the front view of the internal structure of the main body of the present invention;

[0019] Figure 4 is the front view ( Figure 4 right) and the rear view ( Figure 4 left) of the side cover of the present invention;

[0020] Figure 5 is the schematic diagram of the internal structure of the blood-sucking cotton of the present invention;

[0021] Figure 6 Internal structure of the left view of the four perforations of the present invention;

[0022] Figure 7 Internal structure of the left view of the inner cavity of the present invention;

[0023] Wherein: 1. Needle body; 2. Connector; 3. Needle-end plug; 4. Instrument-end plug; 5. Wire; 6. Blood-absorbing cotton; 7. First perforation; 8. Main body; 9. Side cover; 10. Second perforation; 11. Clamping block; 12. Clamping groove; 13. Notch; 14. Wing rod; 15. Positioning groove; 16. Filling block; 17. Deficient groove; 18. T-shaped groove; 19. Strip-shaped hole; 20. T-shaped block; 21. Second slider; 22. Hand-dialing plate; 23. Fixed end; 24. Free end; 25. Adhesive; 26. Protective layer; 27. First chute; 28. First slider; 29. Inner cavity; 30. Third perforation; 31. First spring; 32. Pressing plate; 33. Front stop block; 34. Rear stop block; 35. Groove; 36. Card slot; 37. Card convex; 38. Fourth perforation; 39. Second chute; 40. Third slider; 41. Second spring; 42. Arc surface; 43. Scale; 44. Transverse stripes. Detailed implementation manners

[0024] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with embodiments and drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0025] Embodiment:

[0026] See Figures 1 to 7 , an electromyogram detection device for neuroelectrophysiological examination, including an electromyogram needle and an adapter cable. The electromyogram needle includes a needle body 1 and a connector 2, and the adapter cable includes a needle-end plug 3, an instrument-end plug 4 and a wire 5 provided between the needle-end plug 3 and the instrument-end plug 4. See attached Figure 2 and attached Figure 3 , except for the appearance, the electromyogram needle and the adapter cable of this embodiment are different from those of the prior art, and other functional parts are the same.

[0027] See attached Figure 1 and attached Figure 5 , this embodiment further includes a hidden pen and a blood-absorbing cotton 6 detachably connected to one end of the hidden pen. A first perforation 7 for the needle body 1 to pass through is provided in the middle of the blood-absorbing cotton 6. The blood-absorbing cotton 6 of this embodiment is in the shape of an inverted frustum, and the blood-absorbing cotton 6 is made of a soft material. The blood-absorbing cotton 6 can not only absorb the exuded blood, but also does not prevent the needle from piercing in, and is convenient for the hidden pen to tilt in all directions, facilitating the needle to move in all directions in the patient's muscle.

[0028] Both side walls of the blood-sucking cotton 6 are provided with sticking strips. The sticking strip includes a fixed end 23 connected to the side wall of the blood-sucking cotton 6 and a free end 24 not connected to the side wall of the blood-sucking cotton 6. The fixed end 23 is adhered to the side wall of the blood-sucking cotton 6. At one end of the fixed end 23 close to the free end 24 and on the bottom surface of the free end 24, there is an adhesive 25, and the surface of the adhesive 25 is covered with a protective layer 26. Tearing off the protective layer 26 exposes the adhesive 25. The blood-sucking cotton 6 is adhered to the hidden pen through the adhesive 25 on the fixed end 23, and the adhesive 25 can paste the free end 24 on the skin of the patient.

[0029] The length of the free end 24 on one side is longer than that of the free end 24 on the other side. After pulling out the needle, press the end of the longer free end 24, hold the shorter free end 24, and pull the shorter free end 24 away from the longer free end 24, so that the blood-sucking cotton 6 tilts towards the side where the shorter free end 24 is located and is deflated, so that the first perforation 7 is misaligned with the needle hole, and the needle hole is pressed by the blood-sucking cotton 6 to absorb the blood that may ooze out.

[0030] The hidden pen is square and includes a main body 8 and a side cover 9. The main body 8 is provided with a second perforation 10 passing through the length direction of the main body 8. One side of the second perforation 10 facing the side cover 9 communicates with the side cover 9, that is, after removing the side cover 9, one side of the main body 8 facing the side cover 9 is in an open state. Inside the second perforation 10, there are two clamping blocks 11 located on the same horizontal plane and arranged oppositely and both can slide along the length direction of the main body 8. On the side of the two clamping blocks 11 facing each other, there is a clamping groove 12. On the side of the clamping groove 12 facing the side cover 9, there is a notch 13. The notch 13 is located at one end of the clamping groove 12 far from the blood-sucking cotton 6, and the width of the notch 13 is half of the width of the clamping groove 12. On both sides of the connecting head 2, there are wing rods 14 that can enter the clamping groove 12 from the notch 13, and the wing rods 14 are adhered to the connecting head 2.

[0031] On both inner walls of the second perforation 10 in this embodiment, there are first sliding grooves 27 arranged along the length direction of the main body 8. Inside the first sliding grooves 27, there are first sliding blocks 28, and one end of the first sliding blocks 28 extending out of the first sliding grooves 27 is adhered to the clamping blocks 11.

[0032] See attachment Figure 3 At both ends of one side of the side wall of the main body 8 facing the side cover 9, there are positioning grooves 15. At the position of the side cover 9 opposite to the positioning grooves 15, there are filling blocks 16 that can be embedded in the positioning grooves 15. At the top of the side of the connecting head 2 facing the side cover 9, there is a notch 17 passing through the top of the connecting head 2. At the bottom of the side of the needle end plug 3 facing the side cover 9, there is a T-shaped groove 18 communicating with the notch 17. See attachment Figure 4, a strip-shaped hole 19 is provided in the middle of the side cover 9 along the length direction of the main body 8. On the side of the side cover 9 facing the main body 8, a T-shaped block 20 that can be entirely embedded in the T-shaped groove 18 and the notch 17 is provided. On the side of the T-shaped block 20 facing the side cover 9, a slider two 21 passing through the strip-shaped hole 19 is provided. At one end of the slider two 21 away from the T-shaped block 20, a hand dial plate 22 is provided along the width direction of the side cover 9. The slider two 21 is bonded to both the T-shaped block 20 and the hand dial plate 22.

[0033] The positioning groove 15 of this embodiment is located at the end of the chute one 27 away from the blood-sucking cotton 6. In order to make the device more convenient to use in this embodiment, an inner cavity 29 located inside the side wall of the main body 8 and extending toward the side where the chute one 27 is located is provided on the side of the positioning groove 15 away from the side cover 9. A through hole three 30 communicating with the inner cavity 29 is provided on the inner wall of the chute one 27 close to the inner cavity 29. A spring one 31 is provided on the inner wall of the inner cavity 29 away from the positioning groove 15. At one end of the spring one 31 close to the positioning groove 15, a pressing plate 32 located inside the inner cavity 29 is provided. The spring one 31 is bonded to both the main body 8 and the pressing plate 32. At one end of the side of the pressing plate 32 facing the positioning groove 15 close to the positioning groove 15, a front stop block 33 extending into the positioning groove 15 is provided. At one end of the side of the pressing plate 32 facing the positioning groove 15 close to the through hole three 30, a rear stop block 34 passing through the through hole three 30 and extending into the chute one 27 is provided. Both the front stop block 33 and the rear stop block 34 are bonded to the pressing plate 32. The slider one 28 is located between the front stop block 33 and the rear stop block 34. When the front stop block 33 is pressed into the inner cavity 29 by the filling block 16, the rear stop block 34 will also enter the inner cavity 29. At this time, the slider one 28 can slide toward the direction of the blood-sucking cotton 6.

[0034] See attachment Figure 3 and attachment Figure 4 , on the inner wall of the notch 17 close to the needle body 1, a groove 35 is provided. On the inner wall of the groove 35 close to the needle body 1, a clamping groove 36 is provided. At the bottom of the T-shaped block 20, a clamping convex 37 that can be engaged with the clamping groove 36 is provided. The clamping convex 37 is bonded to the T-shaped block 20, and the bottom end of the T-shaped block 20 can slide into the groove 35.

[0035] See attachment Figure 6 , through holes four 38 for the corresponding filling blocks 16 to pass through are provided at both ends of the side cover 9. On both inner walls of the through holes four 38, chutes two 39 are provided. Inside the chutes two 39, sliders three 40 are provided. The sliders three 40 can slide along the chutes two 39 in the direction away from the main body 8 or in the direction close to the main body 8. On the inner wall of the chute three close to the main body 8, a spring two 41 is provided. At one end of the spring two 41 close to the slider three 40, it is bonded to the slider three 40, and the spring two 41 is bonded to the side cover 9.

[0036] The side of the filling block 16 facing away from the main body 8, the end away from the blood-absorbing cotton 6 and the end close to the blood-absorbing cotton 6 are both arc surfaces 42, and the side of the hand-operated plate 22 facing the side cover 9, the end away from the blood-absorbing cotton 6 and the end close to the blood-absorbing cotton 6 are also arc surfaces 42. When the locking protrusion 37 is engaged with the locking groove 36, the hand-operated plate 22 is pressed against the filling block 16 and, in conjunction with the filling block 16, presses the front stopper 33 into the inner cavity 29.

[0037] The side wall of the side cover 9 of this embodiment facing away from the main body 8 is provided with a scale 43 arranged along the length direction of the main body 8, and the scale 43 is arranged on one side of the strip hole 19. The scale 43 can help the doctor to judge the needle insertion length more intuitively. The hand plate 22 of this embodiment is provided with a horizontal stripe 44 on one side facing away from the side cover 9. The horizontal stripe 44 can increase the friction between the doctor's finger and the hand plate 22, making it easier for the doctor to turn the hand plate 22.

[0038] The use principle of this embodiment is as follows: when using, take a blood-absorbing cotton 6, tear off the protective layer 26 of the fixed end 23 of the blood-absorbing cotton 6, and stick the blood-absorbing cotton 6 on the hidden pen; thereafter, the doctor aligns the wing rod 14 of the electromyography needle with the notch 13. After the wing rod 14 enters the notch 13, the connector 2 is located between the two clamping blocks 11, and the connector 2 is pushed downward to make the wing rod 14 slide into the bottom end of the clamping groove 12. When performing the above operation, since the rear block 34 blocks the slider 28, no matter how much force is used to push the connector 2, the slider 28 will not be pushed. Therefore, after the rear block 34 is set, the doctor does not need to be cautious when performing the above operation. After the wing rod 14 slides into the bottom end of the clamping groove 12, the connector 2 of the electromyography needle can no longer move toward the side cover 9;

[0039] After the electromyographic needle is installed, the needle end plug 3 of the adapter cable is connected to the connector 2 of the electromyographic needle, and then the side cover 9 is covered on the main body 8, the filling block 16 is embedded in the positioning groove 15, and the T-block 20 is embedded in the T-slot 18 and the notch 17, so that the electromyographic needle and the adapter cable are more firmly connected together; then the hand-operated plate 22 is pushed toward the side where the blood-absorbing cotton 6 is located, and the T-block 20 slides in the direction of the card slot 36. After the bottom end of the T-block 20 enters the groove 35, the card protrusion 37 is engaged with the card slot 36. At this time or in the subsequent use process, if the side cover 9 is moved in the direction away from the main body 8, since the T-block 20 is blocked by the groove 35 and the card slot 36, the side cover 9 will not easily fall off from the main body 8, and it is more convenient for doctors to use;

[0040] Meanwhile, the manual dial plate 22 slides towards the filling block 16. When the clamping protrusion 37 snaps into the clamping groove 36, the manual dial plate 22 just moves to one end of the filling block 16 close to the manual dial plate 22 and presses this end of the filling block 16. Since when the manual dial plate 22 does not press the filling block 16, the part of the filling block 16 located in the positioning groove 15 does not press the front stop block 33 in the positioning groove 15 into the inner cavity 29, and when the manual dial plate 22 presses the filling block 16, the filling block 16 presses the front stop block 33 into the inner cavity 29, thereby driving the rear stop block 34 to be also pressed into the inner cavity 29. At this time, the first slider 28 will not be blocked by the rear stop block 34. Therefore, by continuing to move the manual dial plate 22, the manual dial plate 22 can drive the electromyogram needle to move towards the direction of the blood-absorbing cotton 6, so as to insert the electromyogram needle into the muscle of the patient. Since the needle tip can be seen through the strip hole 19, when in use, in order to prevent the patient from seeing the needle body 1 of the electromyogram needle through the strip hole 19, the side of the strip hole 19 can be oriented towards the direction away from the patient's face.

[0041] After the detection is completed, during the process of pulling out the electromyogram needle, move the manual dial plate 22 in the direction away from the blood-absorbing cotton 6. The manual dial plate 22 presses the filling block 16, the filling block 16 presses the front stop block 33, and the rear stop block 34 enters the inner cavity 29 until the first slider 28 returns to its original position. After pulling out the electromyogram needle, the doctor uses two fingers to press the two stickers respectively. After pulling out the electromyogram needle, the doctor can directly press the blood-absorbing cotton 6 to press the wound of the patient, or the doctor only presses the end of the longer free end 24, holds the shorter free end 24, and pulls the shorter free end 24 towards the side away from the longer free end 24, so that the blood-absorbing cotton 6 tilts towards the side where the shorter free end 24 is located and is deflated, so that the first perforation 7 is misaligned with the needle hole, and the needle hole is pressed by the blood-absorbing cotton 6 to absorb the possibly exuded blood.

[0042] The above is the embodiment of the present invention. The above embodiments and the specific parameters in the embodiments are only for clearly expressing the invention verification process, and are not used to limit the protection scope of the present invention. The protection scope of the present invention still depends on its claims. All equivalent structural changes made by using the description and drawings of the present invention should be included in the protection scope of the present invention by the same token.

Claims

1. An electromyogram detection device for neuroelectrophysiological examination, comprising an electromyogram needle and an adapter cable. The electromyogram needle includes a needle body (1) and a connector head (2). The adapter cable includes a needle-end plug (3), an instrument-end plug (4), and a wire (5) disposed between the needle-end plug (3) and the instrument-end plug (4), characterized in that, It further includes a hidden pen and a blood-sucking cotton (6) detachably connected to one end of the hidden pen. A first perforation (7) for the needle body (1) to pass through is provided in the middle of the blood-sucking cotton (6). The hidden pen is square and includes a main body (8) and a side cover (9). A second perforation (10) running through the length direction of the main body (8) is provided in the main body (8). One side of the second perforation (10) facing the side cover (9) communicates with the side cover (9). Two clamping blocks (11) are provided in the second perforation (10) and are arranged opposite to each other and can both slide along the length direction of the main body (8). Clamping grooves (12) are provided on the surfaces of the two clamping blocks (11) facing each other. A notch (13) is provided on the side of the clamping groove (12) facing the side cover (9). The notch (13) is provided at one end of the clamping groove (12) away from the blood-sucking cotton (6). Wing rods (14) that can enter the clamping groove (12) from the notch (13) are provided on both sides of the connecting head (2). Positioning grooves (15) are provided at both ends of one side wall of the main body (8) facing the side cover (9). Filling blocks (16) that can be embedded into the positioning grooves (15) are provided at positions of the side cover (9) opposite to the positioning grooves (15). A notch groove (17) passing through the top of the connecting head (2) is provided at the top of the side of the connecting head (2) facing the side cover (9). A T-shaped groove (18) communicating with the notch groove (17) is provided at the bottom of the side of the needle end plug (3) facing the side cover (9). A strip-shaped hole (19) is provided in the middle of the side cover (9) along the length direction of the main body (8). A T-shaped block (20) that can be entirely embedded into the T-shaped groove (18) and the notch groove (17) is provided on one side of the side cover (9) facing the main body (8). A second slider (21) passing through the strip-shaped hole (19) is provided on the side of the T-shaped block (20) facing the side cover (9). A manual dial plate (22) arranged along the width direction of the side cover (9) is provided at one end of the second slider (21) away from the T-shaped block (20).

2. The electromyogram detection device for neuroelectrophysiological examination according to claim 1, wherein The blood-sucking cotton (6) is in the shape of an inverted frustum. Sticking strips are provided on both side walls of the blood-sucking cotton (6). The sticking strips include a fixed end (23) connected to the side wall of the blood-sucking cotton (6) and a free end (24) not connected to the side wall of the blood-sucking cotton (6). Adhesive tapes (25) are provided at one end of the fixed end (23) close to the free end (24) and on the bottom surface of the free end (24). A protective layer (26) covers the surface of the adhesive tape (25). The length of the free end (24) on one side is longer than the length of the free end (24) on the other side.

3. An electromyogram detection device for neuroelectrophysiological examination according to claim 1, characterized in that, Sliding grooves one (27) are provided on both inner walls of the second perforation (10) along the length direction of the main body (8). Sliders one (28) are provided in the sliding grooves one (27). One end of the slider one (28) extending out of the sliding groove one (27) is bonded to the clamping block (11).

4. The electromyogram detection device for neuroelectrophysiological examination according to claim 3, characterized in that, The positioning groove (15) is located at one end of the first sliding groove (27) away from the blood-sucking cotton (6). One side of the positioning groove (15) away from the side cover (9) is provided with an inner cavity (29) located inside the side wall of the main body (8) and extending towards the side where the first sliding groove (27) is located. The inner wall of one side of the first sliding groove (27) close to the inner cavity (29) is provided with a third through hole (30) communicating with the inner cavity (29); One side inner wall of the inner cavity (29) away from the positioning groove (15) is provided with a first spring (31). One end of the first spring (31) close to the positioning groove (15) is provided with a pressing plate (32) located inside the inner cavity (29). One end of the pressing plate (32) facing the positioning groove (15) close to the positioning groove (15) is provided with a front stop block (33) extending into the positioning groove (15). One end of the pressing plate (32) facing the positioning groove (15) close to the third through hole (30) is provided with a rear stop block (34) passing through the third through hole (30) and extending into the first sliding groove (27). The first slider (28) is located between the front stop block (33) and the rear stop block (34). When the front stop block (33) is pressed into the inner cavity (29) by the filling block (16), the rear stop block (34) will also enter the inner cavity (29); One side inner wall of the notch (17) close to the needle body (1) is provided with a groove (35). One side inner wall of the groove (35) close to the needle body (1) is provided with a clamping groove (36). The bottom of the T-shaped block (20) is provided with a clamping protrusion (37) that can be engaged with the clamping groove (36). The bottom end of the T-shaped block (20) can slide into the groove (35); Both ends of the side cover (9) are provided with fourth through holes (38) for the corresponding filling blocks (16) to pass through. The inner walls on both sides of the fourth through hole (38) are provided with second sliding grooves (39). A third slider (40) is arranged in the second sliding groove (39). One side inner wall of the second sliding groove (39) close to the main body (8) is provided with a second spring (41). One end of the second spring (41) close to the third slider (40) is bonded to the third slider (40); One end of the filling block (16) facing away from the main body (8) away from the blood-sucking cotton (6) and one end close to the blood-sucking cotton (6) are both arc surfaces (42). One end of the manual dial (22) facing the side cover (9) away from the blood-sucking cotton (6) and one end close to the blood-sucking cotton (6) are also both arc surfaces (42); When the clamping protrusion (37) is engaged with the clamping groove (36), the manual dial (22) just presses on the filling block (16) and jointly presses the front stop block (33) into the inner cavity (29) with the filling block (16).

5. An electromyogram detection device for neuroelectrophysiological examination according to claim 1, characterized in that, The side wall of the side cover (9) facing away from the main body (8) is provided with a scale (43) arranged along the length direction of the main body (8). The scale (43) is arranged on one side of the strip-shaped hole (19).

6. The electromyogram detection device for neuroelectrophysiological examination according to claim 1, characterized in that, The side of the manual dial (22) facing away from the side cover (9) is provided with cross stripes (44).

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