Needle seat split type electromyographic needle

Abstract

The utility model discloses a needle seat split type myoelectric needle. A needle base split type myoelectric needle comprises a needle body, an elastic piece and a needle base, a positioning ring is formed on the needle body in an injection molding mode, the positioning ring is provided with extending parts which are arranged in a mirror image opposite mode, and positioning holes are formed in the extending parts; each elastic piece comprises two embedding grooves used for being embedded into the outer wall of the needle body in the radial direction, and the two embedding grooves are located on the two sides of the positioning ring in the axial direction; the needle seat comprises a first clamping part and a second clamping part, a positioning column penetrating through the positioning hole is arranged on the first clamping part, and a penetrating hole penetrating through the positioning column is formed in the second clamping part; positioning grooves are formed in the first clamping part and the second clamping part; the limiting ring is rotatably arranged on the periphery of the needle base in a sleeving mode, and the outer wall of the limiting ring is rotatably connected with a positioning rod embedded into the positioning groove. Through the rotatable arrangement of the limiting ring, the position of the positioning rod can be conveniently adjusted, and different positioning requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of electric stimulation devices, in particular to an electromyoelectric needle. Background Art

[0002] The existing electromyographic needle structure generally includes a needle seat, a needle body, a conductive terminal, and a spring, wherein the needle body is formed by bonding a needle tube and a needle core. See a disposable electromyographic needle fixing needle seat disclosed in Chinese patent publication number CN218943358U.

[0003] The bevel at the front end of the electromyographic needle makes it sharp and easy for the electromyographic needle to penetrate into the human muscle tissue. However, when the electromyographic needle is inserted into the human body, it is not easy for the doctor to determine the direction of the bevel at the front end of the needle. When the electromyographic needle is rotated, it is also difficult for the doctor to determine the approximate rotation angle of the electromyographic needle.

[0004] In response to the above problems, a Chinese patent with publication number CN214048850U discloses an electromyography needle holder, wherein the needle holder has an inner cavity, the mouth of the inner cavity is formed at the rear end of the needle holder, the front end of the needle holder has a needle hole connected to the inner cavity, and the outer wall of the needle holder has a guide edge extending along the axis of the needle holder. The utility model also discloses an electromyography needle, wherein the orientation of the guide edge corresponds to the orientation of the inclined surface of the needle body. In the process of inserting the electromyography needle into the muscle tissue of the human body, the doctor can judge the orientation of the inclined surface of the needle tip according to the guide edge. In addition, the long strip shape of the guide edge gives the doctor a stronger sense of touch.

[0005] The disadvantage is that the guide edge is fixed and its position cannot be adjusted. Utility Model Content

[0006] The utility model aims at the problems and shortcomings of the prior art and provides a needle seat combined type electromyographic needle.

[0007] The utility model solves the above technical problems through the following technical solutions:

[0008] The utility model provides a needle seat combined electromyographic needle, comprising a needle body, a spring and a needle seat, characterized in that a positioning ring is injection molded on the needle body, the positioning ring is provided with an extension portion arranged opposite to the mirror image, and a positioning hole is opened on the extension portion;

[0009] The spring sheet comprises an embedding groove for radially embedding into the outer wall of the needle body, and two embedding grooves are provided, and the two embedding grooves are located on both sides of the positioning ring in the axial direction;

[0010] The needle seat comprises a first clamping portion and a second clamping portion for clamping the needle body and the periphery of the spring sheet, the first clamping portion is provided with a positioning column passing through the positioning hole, and the second clamping portion is provided with a through hole passing through the positioning column;

[0011] The first clamping portion and the second clamping portion are provided with positioning grooves;

[0012] It also includes a limiting ring, which is rotatably sleeved on the periphery of the needle seat, and the outer wall of the limiting ring is rotatably connected to a positioning rod embedded in the positioning groove.

[0013] The utility model optimizes the structure of the electromyographic needle and facilitates the adjustment of the position of the positioning rod through the rotatable setting of the limiting ring to meet different positioning requirements. At the same time, the first clamping part and the second clamping part can also be clamped and fixed through the limiting ring. The relative fixation of the positioning ring and the needle body and the clamping of the needle seat improve the anti-twisting fixing effect of the needle body.

[0014] Further preferably, the embedding groove is a U-shaped bending part.

[0015] Alternatively, the embedding groove is an arc-shaped groove body formed by bending a metal sheet, and both sides of the metal sheet are provided with flanges extending outwards.

[0016] Further preferably, the outer walls of the first clamping portion and the second clamping portion are provided with semi-annular grooves arranged in opposite positions;

[0017] The first clamping portion and the second clamping portion are connected via a rubber ring embedded in the semi-annular groove.

[0018] Further improve the fixing effect.

[0019] Further preferably, the limiting ring and the positioning rod are rotatably connected via a ball head and a ball bowl structure that match each other;

[0020] The positioning rod is provided with different marking structures on its circumference;

[0021] The identification structure is a printing layer, a convex structure or a concave structure.

[0022] It is convenient to expose different sides of the positioning rod, expose different identification structures, and further realize the switching indication of the needle tip or other different positions.

[0023] On the basis of conforming to the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present utility model.

[0024] The positive and progressive effects of the utility model are:

[0025] 1) The positioning rod on the needle holder can be used to easily identify the direction of the needle tip.

[0026] 2) The first clamping part and the second clamping part can also be clamped and fixed by the limiting ring. The relative fixation of the positioning ring and the needle body and the clamping of the needle seat improve the anti-twisting fixing effect of the needle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A cross-sectional view of a specific embodiment 1 of the utility model;

[0028] Figure 2 This is an exploded view of the specific embodiment 1 of the utility model;

[0029] Figure 3 This is a structural schematic diagram of a spring piece according to a specific embodiment 1 of the utility model;

[0030] Figure 4 This is another structural schematic diagram of the spring piece in specific embodiment 1 of the utility model. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0032] like Figures 1 to 4As shown, specific embodiment 1, a needle seat combined electromyographic needle, includes a needle body 1, a spring piece 3 and a needle seat, a positioning ring 2 is injection molded on the needle body 1, the positioning ring 2 is provided with an extension portion 21 arranged in a mirror image, and a positioning hole is provided on the extension portion 21; the spring piece 3 includes an embedding groove 31 for radially embedding into the outer wall of the needle body 1, and two embedding grooves 31 are provided, and the two embedding grooves 31 are located on both sides of the axial direction of the positioning ring; the needle seat includes a first clamping portion 41 and a second clamping portion 42 for clamping on the needle body 1 and the periphery of the spring piece 3, the first clamping portion 41 is provided with a positioning column passing through the positioning hole, and the second clamping portion 42 is provided with a through hole passing through the positioning column; the first clamping portion 41 and the second clamping portion 42 are provided with positioning grooves; it also includes a limit ring 5, the limit ring 5 is rotatably sleeved on the periphery of the needle seat, and the outer wall of the limit ring 5 is rotatably connected with a positioning rod 6 embedded in the positioning groove. The utility model optimizes the structure of the electromyographic needle and facilitates the adjustment of the position of the positioning rod 6 through the rotatable setting of the limit ring 5 to meet different positioning requirements. At the same time, the first clamping part 41 and the second clamping part 42 can also be clamped and fixed by the limit ring. The anti-twisting fixing effect of the needle body 1 is improved by the relative fixation of the positioning ring 2 and the needle body 1 and the clamping of the needle seat. The first clamping part and the second clamping part are provided with positioning grooves with equal angular intervals. It is convenient to provide a physical reference for the rotation angle of the needle body.

[0033] The positioning rod can be a silicone piece, and the silicone piece is clamped with the positioning groove.

[0034] The area of ​​the needle body 1 where the positioning ring 2 is injection molded is provided with a frosted layer, so as to improve the stability of the injection molding.

[0035] See also Figure 3 , the embedding groove 31 is a U-shaped bending part. Figure 4 The embedding groove 31 is an arc-shaped groove body formed by bending a metal sheet, and flanges extending outward are arranged on both sides of the metal sheet.

[0036] The two embedded grooves 31 are connected by a metal connecting strip. The embedded groove at the top is connected to the gap ring by an extension strip extending radially outward. The outer diameter of the gap ring matches the inner diameter of the cavity enclosed by the first clamping part and the second clamping part. Alternatively, the outer diameter of the gap ring is larger than the inner diameter of the cavity enclosed by the first clamping part and the second clamping part. The gap ring is squeezed by clamping the first clamping part and the second clamping part to improve the fixing effect of the gap ring. The first clamping part or the second clamping part is provided with a strip-shaped protrusion at the gap where the gap ring is embedded. Improve the anti-rotation property of the spring piece.

[0037] The outer walls of the first clamping part and the second clamping part are provided with semi-annular grooves arranged in a corresponding position; the first clamping part and the second clamping part are connected by a rubber ring embedded in the semi-annular groove, so as to further improve the fixing effect. The semi-annular groove of the first clamping part and the semi-annular groove of the second clamping part are combined to form an annular groove embedded in the rubber ring.

[0038] The limiting ring and the positioning rod are rotatably connected through the matching ball head and ball bowl structure; different marking structures are arranged on the circumference of the positioning rod; the marking structure is a printed layer, a raised structure or a groove structure. It is convenient to realize the exposure of different sides of the positioning rod. It realizes the exposure of different marking structures.

[0039] The needle body comprises an outer conductor and an inner conductor which are coaxially arranged inside and outside. The outer conductor is in contact with the spring sheet. The inner conductor at the end of the needle body away from the needle tip is exposed.

[0040] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications fall within the protection scope of the present invention.

Claims

1. A needle seat combined electromyographic needle, comprising a needle body, a spring and a needle seat, characterized in that: A positioning ring is injection-molded on the needle body, and an extension portion arranged in a mirror image is provided on the positioning ring, and a positioning hole is opened on the extension portion; The spring sheet comprises an embedding groove for radially embedding into the outer wall of the needle body, and two embedding grooves are provided, and the two embedding grooves are located on both sides of the positioning ring in the axial direction; The needle seat comprises a first clamping portion and a second clamping portion for clamping the needle body and the periphery of the spring sheet, the first clamping portion is provided with a positioning column passing through the positioning hole, and the second clamping portion is provided with a through hole passing through the positioning column; The first clamping portion and the second clamping portion are provided with positioning grooves; It also includes a limiting ring, which is rotatably sleeved on the periphery of the needle seat, and the outer wall of the limiting ring is rotatably connected to a positioning rod embedded in the positioning groove.

2. The needle seat combined electromyographic needle according to claim 1, characterized in that: The embedding groove is a U-shaped bending part.

3. The needle seat combined electromyographic needle according to claim 1, characterized in that: The embedding groove is an arc-shaped groove body formed by bending a metal sheet, and both sides of the metal sheet are provided with flanges extending outwards.

4. The needle seat combined electromyographic needle according to claim 1, characterized in that: The outer walls of the first clamping portion and the second clamping portion are provided with semi-annular grooves arranged in opposite positions; The first clamping portion and the second clamping portion are connected via a rubber ring embedded in the semi-annular groove.

5. The needle seat combined electromyographic needle according to claim 1, characterized in that: The limiting ring and the positioning rod are rotatably connected via a ball head and a ball bowl structure that match each other; The positioning rod is provided with different identification structures on its circumference; The identification structure is a printing layer, a convex structure or a concave structure.

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