Hand-held and body surface supporting dual-purpose needle holder for electromyography needle electrode detection
By designing a handheld and surface-supported dual-purpose needle holder for electromyography examination, the problem of insufficient indices of the inclined direction of the needle tip, difficulty in fixing the needle electrode, and difficulty in controlling the speed of the needle insertion and retraction in electromyography examination is solved, and higher positioning accuracy, operation convenience and patient comfort are achieved.
Patent Information
- Application Number
- CN202421627181.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-10
AI Technical Summary
In electromyography examination, the lack of obvious inclined direction indicators of the needle tip leads to inaccurate positioning; the needle electrode is not easy to fix and easily remove the needle; the speed of induction and withdrawal of the needle depends entirely on the hands of the detector, which may cause pain and discomfort in the patient.
A handheld and surface-supported dual-purpose needle holder for electromyography needle electrode detection is designed, including a needle holder fixing device and support wings. The needle holder fixing device consists of a fixing layer, an intermediate layer and a needle support layer. The support wing is a telescopic structure, which is used to adjust the height of the device, provide support force and assist in finding the inclined direction of the needle tip.
It improves the positioning accuracy and operation convenience of the needle electrode, reduces the movement and needle removal of the needle electrode, reduces the patient's pain response, and improves the accuracy and safety of the examination.
Smart Images
Figure CN222853892U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of electromyography needle supports, and in particular relates to a dual-purpose needle holder for holding and supporting the body surface during electromyography needle electrode detection. Background Art
[0002] Needle electrodes are one of the commonly used electrodes in electromyography examinations and can be used for needle electromyography and single fiber electromyography examinations. Needle electrodes used in clinical applications include monopolar needle electrodes, bipolar needle electrodes, concentric needle electrodes, etc. Among them, concentric needle electrodes are the most widely used. The tip of the concentric needle electrode is an elliptical bevel with a metal wire exposed as a recording electrode. Therefore, the concentric needle electrode can only collect electrical signals within a 180° range from the bevel direction of the needle tip.
[0003] However, currently there is only a very small mark on the needle handle where the needle electrode is connected to the needle holder to indicate the direction of the needle tip bevel, resulting in a lack of obvious sense of the needle tip bevel orientation during needle electromyography examination. A handheld winged needle holder will help to clearly indicate the direction of the needle tip bevel.
[0004] In addition, it is sometimes necessary to fix the needle electrode for a period of time to observe abnormal electrical activity in resting muscles. If the needle electrode is held for a long time, fatigue will inevitably cause the hand to move slightly, thereby driving the needle electrode to move and induce insertion electrical activity. A needle holder that can be used for support will help keep the needle electrode stable. Needle electrode EMG and single fiber EMG of some special parts of the muscles, especially the face, often have problems with needle electrodes being difficult to fix and easy to fall off. If there is a needle holder to support and assist in fixation, this problem will be effectively solved.
[0005] In addition, considering that the current needle electromyography examination requires adjusting the test site by inserting and withdrawing the needle (withdrawing the needle to the subcutaneous part and not removing the needle) in the tested muscle, it is necessary to ensure that multiple points of testing are performed at different sites in the same muscle to improve the accuracy of diagnosis. However, the speed of needle insertion and withdrawal is completely controlled by the hand of the tester, and sometimes too fast speed will cause acute pain and discomfort to the patient.
[0006] Based on this, the utility model proposes a dual-purpose needle holder for hand-held and body surface support during electromyography needle electrode detection. Utility Model Content
[0007] In order to solve the above problems in the prior art, namely, the lack of obvious needle tip bevel orientation sense during needle electromyography examination, the needle electrode is often difficult to fix and easy to fall off, and the current needle insertion and withdrawal speed is completely dependent on the tester's hand control, and sometimes too fast speed will cause patients to suffer from acute pain and discomfort, the utility model provides a dual-purpose needle holder for hand-held and body surface support during electromyography needle electrode detection, including a needle holder fixing device and a support wing;
[0008] The needle holder fixing device comprises a fixing layer, an intermediate layer moving along the fixing layer, and a needle support layer moving along the intermediate layer, wherein the needle support layer is used to support the needle holder;
[0009] Support wings are hinged on both sides of the fixing layer, respectively. The support wings are telescopic structures and are used to adjust the height of the needle holder fixing device, provide supporting force, and assist in finding the direction of the needle tip bevel.
[0010] In some preferred embodiments, the fixing layer is provided with a first elongated hole, and the intermediate layer is provided with a second elongated hole;
[0011] A first push rod is fixed on the outer surface of the needle support layer. The first push rod passes through the first long hole and the second long hole. The first push rod is used to move the needle support layer.
[0012] In some preferred embodiments, the length directions of the first elongated hole and the second elongated hole are parallel to each other.
[0013] In some preferred embodiments, first guide rails are symmetrically provided on both sides of the first elongated hole, a first slider moving along the first guide rail is provided in the first guide rail, and the first slider is fixed to the first push rod.
[0014] In some preferred embodiments, second guide rails are symmetrically provided on both sides of the second elongated hole, a second slide block moving along the second guide rail is provided inside the second guide rail, and the second slide block is fixed to the first push rod.
[0015] In some preferred embodiments, a needle holder bracket is further included, wherein a supporting groove is provided on the needle holder bracket;
[0016] The innermost telescopic end of the supporting wing can be arranged in the supporting groove, and the needle support bracket can be detachably fixed on the operating table.
[0017] In some preferred embodiments, the innermost telescopic end of the support wing is fixed to a handle, and the handle can be disposed in the support groove.
[0018] In some preferred embodiments, the needle holder bracket is detachably fixed on the operating table, and its structure is:
[0019] A fixing through hole is provided on the needle support bracket, a fixing rope is passed through the fixing through hole, and the fixing rope is fixed to the operating table.
[0020] In some preferred embodiments, the needle holder bracket is detachably fixed on the operating table, and its structure is:
[0021] The needle support bracket is bonded to the operating table.
[0022] In some preferred embodiments, a second push rod is fixed on the middle layer, and the second push rod is used to move the middle layer.
[0023] Beneficial effects of the utility model:
[0024] Improve positioning accuracy and ease of operation: Currently, the needle holder itself does not have the function of indicating the direction of the needle tip bevel. After the needle holder layer is installed on the needle holder, the needle tip bevel can be kept consistent with the two parallel support wings of the needle holder after the needle holder is unfolded when the needle electrode is installed. The needle holder with support wings helps to clearly indicate the direction of the needle tip bevel. When adjusting the position of the needle electrode, it can ensure that the needle tip bevel faces multiple directions to collect motor unit action potentials, which can not only improve detection efficiency, shorten detection time, and reduce the pain of patient examination, but also maximize the muscle detection range.
[0025] For needle EMG and single-fiber EMG of muscles in some special parts, the needle electrode is often difficult to fix and easy to fall off when operated by one person. A needle support will help keep the needle electrode stable, reduce insertion electrical activity induced by slight movement of the hand, and cause false positive results of resting needle EMG, thereby improving the accuracy of the examination.
[0026] Enhanced stability and reduced pain: The support wings and telescopic structure of the utility model effectively prevent the movement of the needle electrode caused by hand fatigue, and reduce the pain and discomfort of the patient caused by accidental touch, especially in examinations that require a long period of fixation, such as electromyography testing of special parts such as the face. Through stable support, the fixation of the needle electrode is ensured, the needle is prevented from falling off, and the safety and comfort of the patient are improved.
[0027] Precise control of needle insertion depth and speed: The introduction of the mechanical structure enables fine control of the needle electrode insertion process, allowing the needle insertion speed and depth to be accurately adjusted, avoiding excessive or slow speeds caused by improper manual control, thereby reducing the patient's pain response and improving the humanization and safety of the examination process.
[0028] Easy to store and flexibly deploy: Through the design of the needle holder bracket, the utility model is not only convenient for storage and arrangement after operation, but can also be flexibly fixed on the operating table according to actual needs. Whether through a fixing rope or bonding, it can ensure the stable use of the needle holder in different environments, thereby improving the versatility and practicality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:
[0030] Figure 1This is a front view of a dual-purpose needle holder for hand-held and body surface support during electromyography needle electrode detection of the utility model;
[0031] Figure 2 It is a cross-sectional view of the internal structure of a dual-purpose needle holder for hand-held and body surface support during electromyography needle electrode detection of the utility model;
[0032] Figure 3 yes Figure 2 A partial enlarged view of
[0033] Figure 4 It is an axonometric diagram of a dual-purpose needle holder for hand-held and body surface support during electromyography needle electrode detection of the utility model;
[0034] Figure 5 yes Figure 4 A partial enlarged view of
[0035] Figure 6 It is a schematic diagram of a needle holder bracket of the utility model, which is a dual-purpose needle holder for hand-held and body surface support during electromyography needle electrode detection;
[0036] Figure 7 It is a schematic diagram of the installation of a needle holder bracket for a dual-purpose needle holder for hand-held and body surface support during electromyography needle electrode detection according to the utility model;
[0037] Figure 8 The utility model is a schematic diagram of the internal structure of a support wing of a dual-purpose needle holder for hand-held and body surface support during electromyography needle electrode detection. DETAILED DESCRIPTION
[0038] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the relevant utility model are shown in the accompanying drawings.
[0039] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0040] like Figure 1-Figure 8 As shown, see Figure 1 The utility model provides a dual-purpose needle holder for hand-held and body surface support during electromyography needle electrode detection, comprising a needle holder fixing device 1 and a support wing 2;
[0041] The needle holder fixing device 1 comprises a fixing layer 11, an intermediate layer 12 moving along the fixing layer 11 and a needle support layer 13 moving along the intermediate layer 12, wherein the needle support layer 13 is used to support the needle holder;
[0042] Support wings 2 are hinged on both sides of the fixing layer 11 , respectively. The support wings 2 are telescopic structures and are used to adjust the height of the needle holder fixing device 1 , provide supporting force, and assist in finding the direction of the needle tip bevel.
[0043] When the utility model is used, the needle holder for fixing the needle electrode is clamped in the clamping groove in the needle holder layer 13 and the shape of the needle holder is matched with each other, so that the needle holder and the needle holder layer 13 are tightly clamped and fixed, and then the angle of the support wing is adjusted, and the height and position of the needle holder fixing device 1 are adjusted, so that the position of the needle electrode can be stabilized and the position of the needle electrode and the skin can be fixed. At this time, the needle holder layer 13 is moved to make the needle electrode penetrate into the designated position of the skin. When the needle electrode is to be penetrated deeper and the needle holder layer 13 is moved to the extreme position, the middle layer 12 is moved to the position close to the skin to continue to provide guidance for the needle holder layer 13. The utility model guides the needle electrode through a mechanical structure, which can avoid the shaking caused by directly holding the needle holder, can stabilize the needle insertion, and can adjust the depth of the needle insertion at will. At the same time, the support wing 2 can stabilize the needle electrode, thereby completely solving the problem that the needle electrode is not easy to fix and easy to fall off, and the current needle insertion and withdrawal completely rely on the speed of the tester's hand to control, and sometimes the speed is too fast to cause acute pain and discomfort to the patient.
[0044] Among them, the two support wings 2 can be unfolded to both sides at an angle of 180 degrees (that is, the two support wings 2 are on the same horizontal plane), forming a needle body plane parallel to the horizontal plane after the two support wings 2 are unfolded, and the angle between the needle tip bevel of the needle electrode and the horizontal plane after the two support wings 2 are unfolded is the same as the angle between the needle tip bevel and the needle body plane.
[0045] Among them, the inner surface of the needle support layer 13 can be set to a frosted surface, which can increase the friction between the needle support layer 13 and the needle holder. Those skilled in the art can obtain the roughness of the friction surface through a limited number of experiments so that the friction is greater than the resistance between the needle and the skin.
[0046] Among them, see Figure 8 The support wing 2 is a telescopic structure. In this embodiment, the telescopic structure is arranged in 4 layers. The adjacent layers are movable and transitionally matched so that the telescopic structure will not retract due to its own gravity when extended. This structure is a prior art and can be referred to as the antenna pole of a radio, which will not be described here.
[0047] The needle holder fixing device 1 can be made into a hollow structure, thereby reducing its own weight and allowing the doctor to insert the needle more stably.
[0048] For further explanation of the present invention, see Figure 1 and Figure 2The fixing layer 11 is provided with a first long hole 111, and the intermediate layer 12 is provided with a second long hole 121;
[0049] A first push rod 131 is fixed to the outer surface of the needle support layer 13 . The first push rod 131 passes through the first elongated hole 111 and the second elongated hole 121 . The first push rod 131 is used to move the needle support layer 13 .
[0050] Among them, since the needle support layer 13 is arranged in the innermost layer of the entire structure, it is difficult for the doctor to move the needle support layer 13 during operation. Therefore, through holes (the first long hole 111 and the second long hole 121) are opened on the fixed layer 11 and the middle layer 12. In order to facilitate the doctor to move the needle support layer 13, the first push rod 131 is fixed on the outer surface of the needle support layer 13. The first push rod 131 passes through the first long hole 111 and the second long hole 121 and is exposed on the outermost side, so as to facilitate the doctor to push.
[0051] The first elongated hole 111 is formed on the fixing layer 11 on the side close to the skin, but not formed on the side away from the skin; the second elongated hole 121 is formed on the middle layer 12 on the side close to the skin, but not formed on the side away from the skin.
[0052] Through the above contents, the utility model can not limit the distance and position of the middle layer 12 moving toward the skin side by penetrating the first long hole 111 opened on the fixing layer 11 close to the skin, so that the middle layer 12 can provide a longer guide rail for the needle support layer 13 as much as possible; but by not penetrating the second long hole 121 opened on the middle layer 12 close to the skin side, the needle support layer 13 can be prevented from separating from the middle layer 12.
[0053] For further explanation of the present invention, see Figure 3 , the length directions of the first elongated hole 111 and the second elongated hole 121 are parallel to each other.
[0054] For further explanation of the present invention, see Figure 3-Figure 5 First guide rails 112 are symmetrically provided on both sides of the first elongated hole 111 . A first slider 113 is provided inside the first guide rail 112 and moves along the first guide rail 112 . The first slider 113 is fixed to the first push rod 131 .
[0055] For further explanation of the present invention, see Figure 3-Figure 5 The second elongated hole 121 is symmetrically provided with second guide rails 122 on both sides thereof. The second guide rail 122 is provided with a second slider 123 that moves along the second guide rail. The second slider 123 is fixed to the first push rod 131 .
[0056] The utility model can make the needle support layer 13 maintain stability and uniform speed when advancing forward or backward by providing the first slider 113 and the second slider 123, further improving the stability of needle insertion and withdrawal, thereby reducing the patient's discomfort and pain.
[0057] For further explanation of the present invention, see Figure 6 , further comprising a needle holder bracket 3, wherein the needle holder bracket 3 is provided with a supporting groove 31;
[0058] The innermost telescopic end of the supporting wing 2 can be arranged in the supporting groove 31, and the needle support bracket 3 can be detachably fixed on the operating table.
[0059] For further explanation of the present invention, see Figure 6 and Figure 7 The innermost telescopic end of the support wing 2 is fixed to the handle 21 , and the handle 21 can be arranged in the support groove 31 .
[0060] Among them, see Figure 6 and Figure 7 Specifically, the support groove 31 includes a supporting wing section 311 and a pulling means 312 which are interconnected. The supporting wing section 311 and the pulling means 312 are arranged on the needle holder bracket 3. The supporting wing section 311 is provided with a supporting wing 2, and the pulling means 312 is provided with a handle 21.
[0061] The supporting wing section 311 and the pulling means 312 are arranged in a mirror image along the midline of the needle holder bracket 3 .
[0062] When the utility model is used, the two handles 21 are first swung toward each other, and the two handles 21 are aligned with the pulling means 312 from the side and inserted inwardly, so that the supporting wing 2 and the handle 21 are inserted into the supporting groove 31 to achieve overall fixation.
[0063] Among them, the supporting wing section 311 is tilted, and the tilting directions of the two supporting wing sections 311 are opposite. When the tilting direction and angle of the supporting wing section 311 are close to the two handles 21, the tilting direction and tilting angle of the two supporting wings 2 are the same.
[0064] For further explanation of the present invention, see Figure 6 The needle holder bracket 3 can be detachably fixed on the operating table, and its structure is as follows:
[0065] The needle support bracket 3 is provided with a fixing through hole 32 , and a fixing rope is passed through the fixing through hole 32 , and the fixing rope is fixed to the operating table.
[0066] For further explanation of the present invention, see Figure 6The needle holder bracket 3 can be detachably fixed on the operating table, and its structure is as follows:
[0067] The needle support bracket 3 is bonded to the operating table.
[0068] For further explanation of the present invention, see Figure 4 A second push rod 124 is fixed on the middle layer 12 , and the second push rod 124 is used to move the middle layer 12 .
[0069] The second push rod 124 can be provided to facilitate the doctor's operation. In this embodiment, the second push rod 124 is fixed on the right side of the middle layer 12 .
[0070] In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0071] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.
[0072] The term "comprise" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus / device.
[0073] So far, the technical solution of the utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings, but it is easy for those skilled in the art to understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Without departing from the principle of the utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the utility model.
Claims
1. A dual-purpose needle holder for hand-held and body surface support during electromyography needle electrode detection, characterized in that: It comprises a needle holder fixing device (1) and a supporting wing (2); The needle holder fixing device (1) comprises a fixing layer (11), an intermediate layer (12) moving along the fixing layer (11), and a needle support layer (13) moving along the intermediate layer (12), wherein the needle support layer (13) is used to support the needle holder; Support wings (2) are hingedly connected on both sides of the fixing layer (11), and the support wings (2) are telescopic structures. The support wings (2) are used to adjust the height of the needle holder fixing device (1), provide supporting force, and assist in finding the direction of the needle tip bevel.
2. A dual-purpose needle holder for hand-held and body surface support during electromyography needle electrode detection according to claim 1, characterized in that: The fixing layer (11) is provided with a first elongated hole (111), and the intermediate layer (12) is provided with a second elongated hole (121); A first push rod (131) is fixed to the outer surface of the needle support layer (13). The first push rod (131) passes through the first elongated hole (111) and the second elongated hole (121). The first push rod (131) is used to move the needle support layer (13).
3. The needle holder for electromyography needle electrode detection according to claim 2, which is characterized in that: The length directions of the first elongated hole (111) and the second elongated hole (121) are parallel to each other.
4. The needle holder for electromyography needle electrode detection according to claim 2, which is characterized in that: First guide rails (112) are symmetrically provided on both sides of the first elongated hole (111), a first slide block (113) is provided inside the first guide rail (112) and moves along the first guide rail, and the first slide block (113) is fixed to the first push rod (131).
5. The needle holder for electromyography needle electrode detection as claimed in claim 4, which is characterized in that: Second guide rails (122) are symmetrically provided on both sides of the second long hole (121), a second slide block (123) is provided inside the second guide rail (122) and moves along the second guide rail, and the second slide block (123) is fixed to the first push rod (131).
6. The needle holder for electromyography needle electrode detection according to claim 1, which is both hand-held and body surface supported, It also includes a needle support bracket (3), wherein the needle support bracket (3) is provided with a support groove (31); The innermost telescopic end of the support wing (2) can be arranged in the support groove (31), and the needle support bracket (3) can be detachably fixed on the operating table.
7. The needle holder for electromyography needle electrode detection according to claim 6, which is characterized in that: The innermost telescopic end of the support wing (2) is fixed to the handle (21), and the handle (21) can be arranged in the support groove (31).
8. The needle holder for electromyography needle electrode detection according to claim 6, which is characterized in that: The needle support bracket (3) can be detachably fixed on the operating table, and its structure is as follows: The needle support bracket (3) is provided with a fixing through hole (32), a fixing rope is passed through the fixing through hole (32), and the fixing rope is fixed to the operating table.
9. The needle holder for electromyography needle electrode detection according to claim 6, which is characterized in that: The needle support bracket (3) can be detachably fixed on the operating table, and its structure is as follows: The needle support bracket (3) is bonded to the operating table.
10. The needle holder for electromyography needle electrode detection according to claim 1, which is both hand-held and body surface supported. A second push rod (124) is fixed on the middle layer (12), and the second push rod (124) is used to move the middle layer (12).