Subcutaneous needle electrode for nerve monitoring

Abstract

The subcutaneous needle electrode for nerve monitoring comprises a needle body, an upper shell, a lower shell, a dial wheel, an adjusting rod and a wire, the upper shell and the lower shell form a complete closed shell, the needle body is inserted into the adjusting rod and penetrates through the upper end and the lower end of the adjusting rod, and the dial wheel is arranged on the dial wheel. The lower end of the needle body is further connected with a wire, the adjusting rod is installed on an inner hole of the shifting wheel in a lifting mode through threads, the adjusting rod is arranged in a containing cavity in the closed shell in a lifting mode, the depth of the electrode needle penetrating into the skin can be accurately determined, accurate positioning is achieved, and it is ensured that detection data of the electrode needle is accurate; according to the device, the depth is adjusted through rotation of the adjusting rod and a lead screw matching mode of the shifting wheel, the fine adjustment effect is achieved, the single-time adjusting amplitude is small, the device adapts to precise control over the penetration depth of the electrode needle, the safety of the subcutaneous needle electrode is effectively improved, and operation is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a subcutaneous needle electrode for nerve monitoring. Background Art

[0002] During thyroid surgery, intraoperative neuromonitoring (IONM) is an important technique used to preserve nerve function and reduce postoperative complications.

[0003] At present, subcutaneous needle electrodes have been widely used in clinical applications. Medical staff need to insert the electrode needle into the subcutaneous part, fix it to the skin with medical tape, wait for the test to be completed, and then pull out the subcutaneous needle. During the examination, due to the different body shapes of each patient, medical staff need to control the depth of needle insertion based on their own experience. The thickness of the skin and fat layer of different patients is different, so the required insertion depth is also different.

[0004] For doctors with less experience, the treatment process needs to find the appropriate depth according to the body shape of each patient, which will cause the treatment time of a single patient to be too long and result in a poor patient experience. Therefore, it needs to be improved and optimized.

[0005] Currently, when inserting subcutaneous needle electrodes, constant debugging is required, the operation is difficult, and it is difficult to stably insert them at the set depth. It is easy to insert them too deep during the test, and they may also be pulled out slightly by the motor. These subtle changes are difficult for doctors to detect, which can also lead to errors in detection.

[0006] Based on this, the utility model designs a subcutaneous needle electrode for nerve monitoring to solve the above problems. Utility Model Content

[0007] The purpose of the utility model is to provide a subcutaneous needle electrode for nerve monitoring, which can accurately determine the depth of electrode needle penetration into the skin and accurately position it to ensure the accuracy of electrode needle detection data. The depth of the device is adjusted by rotating the adjustment rod and cooperating with the screw rod of the dial wheel to achieve the effect of micro-adjustment. The single adjustment amplitude is small, which is suitable for the precise control of the electrode needle penetration depth, effectively improving the safety of the subcutaneous needle electrode and simple operation.

[0008] The utility model is implemented as follows: a subcutaneous needle electrode for nerve monitoring, comprising:

[0009] Needle body, upper shell, lower shell, dial, adjustment rod, wire;

[0010] Both the upper shell and the lower shell are provided with cylindrical cavities inside. The upper shell and the lower shell form a complete closed shell. The interior of the closed shell formed by the upper shell and the lower shell is a hollow cylindrical accommodating cavity. A relief groove is also opened on the outer side wall of the lower shell, and the relief groove penetrates the closed shell and communicates with the accommodating cavity inside it;

[0011] The dial is a ring with anti-slip lines on the outside. The inner hole of the dial is provided with threads. The dial is rotatably arranged in the accommodating cavity inside the closed shell, and the side wall of the dial passes through the relief groove and exposes outside the lower shell;

[0012] The adjusting rod is a cylinder, and threads are provided on the outside of the adjusting rod. The adjusting rod is installed on the inner hole of the dial through the threads and can be lifted and lowered;

[0013] The needle body is inserted inside the adjusting rod, the needle body passes through the upper and lower ends of the adjusting rod, and a wire is also connected to the lower end of the needle body;

[0014] The adjusting rod is arranged in the accommodating cavity inside the closed shell and can be lifted and lowered. The upper end of the needle body extends above the upper shell, and the lower end of the wire extends below the lower shell;

[0015] The axes of the needle body, the adjusting rod, the dial, and the accommodating cavities inside the upper shell and the lower shell coincide, and the axes of the upper shell and the lower shell are parallel to the axis of the internal accommodating cavity and do not coincide.

[0016] Furthermore, guide strips are provided inside both the upper shell and the lower shell. The guide strips are vertically arranged and protrude inward in the accommodating cavity. The guide strips of the upper shell and the lower shell are aligned vertically to form a complete long strip;

[0017] A guide channel is vertically opened on the side wall of the adjusting rod. The guide channel is slidably sleeved on the guide strip, and the adjusting rod is vertically slid in the accommodating cavity through the cooperation of the guide channel and the guide strip.

[0018] Furthermore, an opening is provided at the top of the upper shell. The needle body extends out of the upper shell from the inside to the outside through the opening, and the needle body and the opening of the upper shell are in clearance fit;

[0019] An opening is provided at the bottom of the lower shell. The wire extends out of the lower shell through the opening, and the wire and the opening of the lower shell are also in clearance fit.

[0020] Furthermore, a hook and a clamping groove are also provided on the outer wall of the closed shell; the clamping groove is a U-shaped groove with an open vertical side wall, anti-slip teeth are provided inside the clamping groove, the hook is a vertically arranged clamping strip, and the hook can be slidably and detachably clamped inside the clamping groove;

[0021] The clamping groove and the hook are in interference fit;

[0022] The two separate enclosed shells are assembled into an integral structure through hooks and slots.

[0023] Furthermore, length scale lines are engraved on the needle body, anti-slip spiral threads are also provided on the outer wall of the needle body, and anti-slip grooves are also provided on the outer wall of the upper shell;

[0024] The upper shell and the lower shell are fixedly bonded into an integral structure;

[0025] The dial wheel has a clearance fit with the lower shell.

[0026] The beneficial effects of the present utility model are as follows: 1. By extending the electrode needle outside the upper shell, it is convenient to pierce the electrode needle into the skin. Also, through the cooperation of the dial wheel and the adjusting rod, the length of the electrode needle extending out can be conveniently adjusted, and the depth of the electrode needle piercing into the skin can be controlled by the length of the electrode needle extending out of the upper shell. Through the limitation of the upper shell, the purpose of accurately adjusting the depth of the electrode needle piercing into the skin is achieved, so that the depth of the electrode needle piercing into the skin is basically consistent, and the detection of the patient's physical signs is more accurate;

[0027] 2. The structure of this device is simple and the operation is convenient. There is no need to repeatedly insert the needle or pull out the needle. Only the dial wheel needs to be rotated. While the operation is simple, it can also prevent the electrode needle piercing into the skin from contacting the outside. The electrode needle is always inside the enclosed shell, effectively reducing the probability of the electrode needle contacting the outside air and reducing the infection risk;

[0028] 3. The two electrode needles of this device can also be used in combination, and the position spacing of the combination can also be adjusted. The operation is convenient, the position is stable, and the detection is more flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The following further describes the present utility model with reference to the accompanying drawings in conjunction with embodiments.

[0030] Figure 1 It is a schematic diagram of the overall structure of the electrode needle of the present utility model;

[0031] Figure 2 It is an exploded view of the electrode needle of the present utility model;

[0032] Figure 3 It is a schematic diagram of the recovery state of the electrode needle of the present utility model;

[0033] Figure 4 It is a schematic diagram of the extended state of the electrode needle of the present utility model;

[0034] Figure 5 It is a schematic diagram of the structure of the upper shell and the lower shell of the outer shell of the present utility model;

[0035] Figure 6This is a schematic diagram of the structure of the distance adjustment component of two closed shells of the utility model;

[0036] Figure 7 A schematic diagram of a closed housing assembly of the utility model.

[0037] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0038] 1-needle body; 2-upper shell; 3-lower shell; 4-dial wheel; 5-adjusting rod; 6-guide groove; 7-guide channel; 8-through groove; 9-anti-slip groove; 10-conducting wire; 11-hook; 12-slot. DETAILED DESCRIPTION

[0039] See also Figures 1 to 7 As shown, the utility model provides a subcutaneous needle electrode for nerve monitoring. In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings in the specification and specific implementation methods.

[0040] In a specific embodiment of the technical solution of the utility model:

[0041] It includes a needle body 1, an upper shell 2, a lower shell 3, a dial wheel 4, an adjustment rod 5, and a guide wire 10;

[0042] A cylindrical cavity is provided inside the upper shell 2 and the lower shell 3. The upper shell 2 and the lower shell 3 form a complete closed shell, and the upper shell 2 and the lower shell 3 are fixed and bonded to form an integral structure; the interior of the closed shell composed of the upper shell 2 and the lower shell 3 is a hollow cylindrical accommodating cavity, and a clearance groove 8 is also provided on the outer wall of the lower shell 3, and the clearance groove 8 penetrates the closed shell and connects with the accommodating cavity inside it; in the formed accommodating cavity, the adjusting rod 5 is located in the accommodating cavity and can slide up and down to achieve the effect of recovering the needle body 1 and placing it into the accommodating cavity, which can be adjusted according to actual use.

[0043] The outer walls of the upper shell 2 and the lower shell 3 on the side in contact with the human body can be detachably attached with adhesive, and an anti-skid groove 9 is also provided on the outer wall of the upper shell 2; the anti-skid groove 9 is convenient for stable gripping and easy acupuncture operation.

[0044] The top of the upper shell 2 has an opening, and the needle body 1 extends out of the upper shell 2 from the inside through the opening, and the needle body 1 and the opening of the upper shell 2 are clearance-matched;

[0045] The bottom of the lower shell 3 has an opening, and the wire 10 extends out of the lower shell 3 through the opening, and the wire 10 and the opening of the lower shell 3 are also clearance-matched.

[0046] The needle body 1 is made of metal, preferably stainless steel, with a sharp upper end for insertion into the subcutaneous tissue of a human body. The lower end of the needle body 1 is connected to a wire 10 for transmitting the electrophysiological signal collected by the needle body 1 .

[0047] The dial wheel 4 is a circular ring with anti-slip grooves on the outside. The inner hole of the dial wheel 4 is provided with threads. The dial wheel 4 can be rotatably placed in the accommodating cavity in the closed shell. The side wall of the dial wheel 4 passes through the clearance groove 8 and is exposed outside the lower shell 3; the dial wheel 4 and the lower shell 3 are clearance-fitted.

[0048] Figure 3 This is the initial state of the subcutaneous needle electrode of the present utility model embodiment. The dial wheel 4 needs to be twisted to extend the needle body 1 for acupuncture operation. Figure 4 The sharp end of the middle needle body 1 is exposed outside the upper shell 2, so that the needle can be inserted. The upper shell 2 can be used to limit the position to ensure that the needle body 1 does not penetrate too deeply.

[0049] The adjusting rod 5 is a cylinder, and a thread is arranged on the outside of the adjusting rod 5. The adjusting rod 5 can be lifted and lowered on the inner hole of the dial wheel 4 through the thread.

[0050] The needle body 1 is inserted into the inside of the adjusting rod 5, and the needle body 1 passes through the upper and lower ends of the adjusting rod 5. The lower end of the needle body 1 is also connected to the wire 10;

[0051] A guide bar 6 is disposed inside the upper shell 2 and the lower shell 3. The guide bar 6 is vertically disposed in the accommodating cavity and protrudes inward. The guide bars 6 of the upper shell 2 and the lower shell 3 are aligned vertically to form a complete long strip.

[0052] A guide channel 7 is vertically provided on the side wall of the adjusting rod 5 , and the guide channel 7 is slidably mounted on the guide bar 6 . The adjusting rod 5 is vertically slidably arranged in the accommodating cavity through the cooperation of the guide channel 7 and the guide bar 6 .

[0053] The adjusting rod 5 is arranged in a accommodating cavity in the closed shell so as to be able to be raised and lowered. The upper end of the needle body 1 extends above the upper shell 2, and the lower end of the wire 10 extends below the lower shell 3.

[0054] The axes of the needle body 1, the adjustment rod 5, the dial wheel 4, the upper shell 2 and the accommodating cavity inside the lower shell 3 coincide with each other, and the axes of the upper shell 2 and the lower shell 3 are parallel to the axis of the internal accommodating cavity and do not coincide with each other.

[0055] A hook 11 and a slot 12 are also provided on the outer wall of the closed shell; the slot 12 is a U-shaped slot with a vertical side wall opening, and anti-slip teeth are provided in the slot 12. The hook 11 is a vertically arranged clip, and the hook 11 can be detachably slidably mounted in the slot 12; the outer side of the hook 11 is forked, that is, the cross-section of the hook 11 is viewed as a Y-shaped supporting structure in top view, and the hook 11 and the slot 12 are both made of medical PVC and have elastic structures. The Y-shaped supporting structure is clamped with the anti-slip teeth in the slot 12, and the matching distance between the hook 11 and the slot 12 can be adjusted, thereby adjusting the distance between the two needle bodies 1.

[0056] The card slot 12 and the card hook 11 are interference fit;

[0057] The two separate closed shells are assembled into an integral structure through the hook 11 and the slot 12 .

[0058] When the utility model is in use, first turn the knob 4 to extend the needle body 1 outside the upper shell 2. The length scale lines engraved on the needle body 1 can accurately judge the extended length of the needle body 1. After adjusting to the appropriate length, hold the concave anti-slip pattern of the anti-slip groove 9 and insert the needle body 1 into the patient's skin for detection.

[0059] The outer wall of the needle body 1 is also provided with anti-skid spiral patterns, which can increase the retention force of the needle body 1 after it penetrates the skin and reduce the risk of needle puncture and fall off; the anti-skid patterns cannot affect the scale lines.

[0060] After the operation, when the use is finished, the dial wheel 4 is turned in the opposite direction to retract the sharp part of the needle body 1 into the closed shell, so that the needle body 1 is hidden in the accommodating cavity, preventing the needle body 1 from stabbing medical staff and avoiding the possibility of cross infection, effectively improving the safety of the subcutaneous needle electrode, with a simple structure and easy operation.

[0061] When two electrode needles need to be inserted, the medical staff docks the hooks 11 and slots 12 of the two closed shells and inserts them into one, and adjusts the engagement depth of the hooks 11 and slots 12 according to actual needs, thereby adjusting the distance between the closed shells of the two electrode needles. During the adjustment, the Y-shaped hook 11 is deformed, slides out of the first slot of the slot 12, and automatically slides into the different anti-slip teeth of the matching slot 12. Repeating this step can achieve the sliding of the hook 11 and the slot 12, thereby achieving the adjustable distance between the two electrode needles, during which the needle 1 can be prevented from being extended and contaminated, and then the extension length of the needle body 1 of the two electrode needles is adjusted. After the adjustment is completed, the two electrode needles are inserted into the patient's skin together, which is convenient for adjustment and acupuncture.

[0062] In addition, in the description of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0063] Although the specific embodiments of the present utility model have been described above, those skilled in the art should understand that the specific embodiments we described are illustrative only and not used to limit the scope of the present utility model. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present utility model should all be covered within the scope protected by the claims of the present utility model.

Claims

1. A subcutaneous needle electrode for nerve monitoring, characterized in that: include: Needle body (1), upper shell (2), lower shell (3), dial wheel (4), adjustment rod (5), guide wire (10); The upper shell (2) and the lower shell (3) form a complete closed shell, and both the upper shell (2) and the lower shell (3) are provided with cylindrical cavities inside. The closed shell formed by the upper shell (2) and the lower shell (3) has a hollow cylindrical storage cavity inside. A clearance groove (8) is also provided on the outer wall of the lower shell (3), and the clearance groove (8) penetrates the closed shell to communicate with the storage cavity inside the closed shell; The thumbwheel (4) is a circular ring with anti-slip grooves on the outside, and the inner hole of the thumbwheel (4) is provided with threads. The thumbwheel (4) is rotatably arranged in the accommodating cavity in the closed shell, and the side wall of the thumbwheel (4) passes through the clearance groove (8) and is exposed outside the lower shell (3); The adjusting rod (5) is a cylinder, and a thread is arranged on the outside of the adjusting rod (5). The adjusting rod (5) is installed on the inner hole of the dial wheel (4) so ​​as to be able to be raised and lowered through the thread. The needle body (1) is inserted into the interior of the adjusting rod (5), the needle body (1) passes through the upper and lower ends of the adjusting rod (5), and the lower end of the needle body (1) is also connected to a wire (10); The adjusting rod (5) is arranged in a accommodating cavity in the closed shell so as to be able to be raised and lowered, the upper end of the needle body (1) extends above the upper shell (2), and the lower end of the wire (10) extends below the lower shell (3); The axes of the needle body (1), the adjustment rod (5), the dial wheel (4), the upper shell (2) and the accommodating cavity inside the lower shell (3) coincide with each other, and the axes of the upper shell (2) and the lower shell (3) are parallel to the axis of the internal accommodating cavity and do not coincide with each other.

2. A subcutaneous needle electrode for nerve monitoring according to claim 1, characterized in that: A guide strip (6) is arranged inside the upper shell (2) and the lower shell (3), and the guide strip (6) is vertically arranged inwardly protruding in the accommodating cavity, and the guide strips (6) of the upper shell (2) and the lower shell (3) are aligned up and down to form a complete long strip; A guide channel (7) is vertically provided on the side wall of the adjusting rod (5), and the guide channel (7) is slidably mounted on the guide strip (6). The adjusting rod (5) is vertically slidably arranged in the accommodating cavity through the cooperation of the guide channel (7) and the guide strip (6).

3. A subcutaneous needle electrode for nerve monitoring according to claim 1, characterized in that: The top of the upper shell (2) has an opening, and the needle body (1) extends out of the upper shell (2) from the inside through the opening, and the needle body (1) and the opening of the upper shell (2) are clearance-matched; The bottom of the lower shell (3) has an opening, and the wire (10) extends out of the lower shell (3) through the opening. The wire (10) and the opening of the lower shell (3) are also clearance-matched.

4. A subcutaneous needle electrode for nerve monitoring according to claim 1, characterized in that: The outer wall of the closed shell is also provided with a hook (11) and a slot (12); the slot (12) is a U-shaped slot with a vertical side wall opening, and anti-slip teeth are provided in the slot (12); the hook (11) is a vertically arranged clip strip, and the hook (11) can be detachably slidably mounted in the slot (12); The clamping groove (12) and the clamping hook (11) are in interference fit; The two separate closed shells are assembled into an integral structure through a hook (11) and a slot (12).

5. A subcutaneous needle electrode for nerve monitoring according to claim 1, characterized in that: The needle body (1) is engraved with length scale lines, and the outer wall of the needle body (1) is also provided with anti-slip spiral patterns; the outer wall of the upper shell (2) is also provided with anti-slip grooves (9); The upper shell (2) and the lower shell (3) are fixedly bonded to form an integral structure; The thumbwheel (4) and the lower housing (3) are clearance-matched.

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