Special simple angle inspection tool for nerve stimulation needle

Abstract

The utility model relates to the technical field of medical auxiliary equipment production, in particular to a simple angle inspection tool special for a nerve stimulation needle, aims to solve the problems of large visual inspection deviation and much waste during product inspection, and particularly comprises an inspection base station and a positioning base station arranged on the front side of the inspection base station, at least one inspection assembly used for inspecting the deflection angle of the nerve stimulation needle is arranged on the inspection base station, and a positioning assembly correspondingly matched with the inspection assembly is arranged on the positioning base station; the inspection assembly comprises a left inspection groove and a right inspection groove which are formed in the upper end face of the inspection base table in the front-back direction, and the left inspection groove and the right inspection groove are the same in structure and each comprise a connector fixing groove formed backwards along the front side end face of the inspection base table. According to the utility model, the simple positioning of the inspection reference surface is realized through the positioning assembly, the inspection precision and the inspection efficiency are improved, the unified measurement standard is quantified, and the eye use intensity of workers is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of production of medical auxiliary equipment, in particular to a special simple angle inspection tool for a nerve stimulation needle. Background Art

[0002] The nerve stimulator needle is a key medical device that integrates core components such as the needle tube, needle holder, infusion connector and wire connector. In the field of disease diagnosis and treatment, especially in the treatment of hemiplegia, sensory disorders, joint pain and other diseases, the nerve stimulator needle plays an indispensable role. In addition, in the implementation of peripheral nerve block anesthesia, the nerve stimulator needle also plays a key role, helping doctors to accurately determine the anesthesia position. Given its wide application and importance in the medical field, it is particularly important to ensure the production quality of the nerve stimulator needle.

[0003] In the production process of nerve stimulation needles, the deflection angle between the needle tube and the needle seat is an important parameter that affects product performance and use effect. According to the method for testing the deflection angle involved in the present utility model (refer to the specific implementation method), it is required that the angle (hereinafter referred to as the deflection angle) between the symmetry plane of the needle tip blade (hereinafter referred to as the surface to be tested) and the plane formed by the central axis of the wire connector and the infusion connector (hereinafter referred to as the test reference plane) should be maintained within the calibration range. The maximum calibration value and the minimum calibration value of the calibration range are always symmetrical about 0°. Appendix Figure 6-8 Examples are shown where the deflection angles of the nerve stimulation needle are 0°, +30°, and -30°, respectively.

[0004] However, the inspection of this specific angle is difficult in the existing technology. Due to the particularity of this angle, general angle measuring tools cannot meet the measurement requirements. Therefore, it currently relies mainly on manual visual inspection for evaluation, which undoubtedly brings several problems. First, due to differences in physical fitness and production experience among different personnel, the visual inspection standards are not uniform, which increases the difficulty of quality control. Secondly, the lack of quantitative standards causes product quality fluctuations, which may ultimately lead to waste of resources. Finally, long-term visual inspection can easily lead to worker fatigue, thereby increasing the risk of errors and misjudgments. Therefore, how to develop an accurate and quantitative tooling to inspect this key parameter is a major technical problem in the current production of nerve stimulation needles. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a simple angle inspection tool for nerve stimulation needles with reasonable design, simple structure and low cost in view of the shortcomings of the existing technology, which can solve the problems of large measurement errors and lack of quantitative standards in the existing technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A simple angle inspection tool for nerve stimulation needles, which has the following characteristics:

[0008] It comprises a test base and a positioning base arranged at the front side of the test base, wherein at least one test component for testing the deflection angle of the nerve stimulation needle is arranged on the test base, and a positioning component corresponding to the test component is arranged on the positioning base;

[0009] The inspection assembly includes a left inspection groove and a right inspection groove opened on the end surface of the inspection base along the front-back direction. The left inspection groove and the right inspection groove have the same structure, and both include a joint fixing groove opened backward along the front end surface of the inspection base, and a needle tube fixing groove opened backward from the bottom of the joint fixing groove;

[0010] An observation oblique groove for observing the deflection direction of the needle tip blade of the nerve stimulating needle is provided on each needle tube fixing groove, and the distance between the observation oblique groove and the joint fixing groove is set corresponding to the needle tube length of the nerve stimulating needle;

[0011] The positioning assembly comprises a left positioning surface and a right positioning surface which are symmetrically arranged, wherein the left positioning surface and the right positioning surface are both perpendicular to the front end surface of the inspection base.

[0012] The symmetry planes of the left positioning surface and the right positioning surface pass through the midpoint of the line between the left inspection groove and the right inspection groove, and the extended surfaces of the left positioning surface and the right positioning surface intersect upward and form an angle at the intersection, and the size of the angle is equal to the difference between the maximum calibration value and the minimum calibration value of the deflection angle of the nerve stimulation needle.

[0013] The technical problem to be solved by the utility model can be further achieved by the following steps: the positioning component comprises an isosceles trapezoid body which is narrow at the top and wide at the bottom, and the left positioning surface and the right positioning surface are two side surfaces of the isosceles trapezoid body respectively.

[0014] The technical problem to be solved by the utility model can be further achieved through the following steps: the inspection base is a rectangular body, a horizontal bubble meter is provided on the upper end surface of the inspection base, and 6 detachable supporting feet are symmetrically screwed on the bottom surfaces of the positioning base and the inspection base.

[0015] The technical problem to be solved by the utility model can be further achieved by the following steps: the bottom end of the support foot is deepened upward to form a threaded fixing hole.

[0016] The technical problem to be solved by the utility model can be further achieved through the following steps: three observation bevel grooves are provided on each needle tube fixing groove to respectively correspond to the needle tubes of nerve stimulation needles of different lengths.

[0017] The technical problem to be solved by the utility model can be further achieved by the following steps: the bottom surface of the observation chute is perpendicular to the plane in the vertical direction, and the front end of the bottom surface is lower than the rear end of the bottom surface.

[0018] The technical problem to be solved by the utility model can be further achieved by the following steps: the observation inclined groove is centered on the axis of the needle tube fixing groove and is horizontally symmetrically opened to the left and right sides.

[0019] Compared with the prior art, the beneficial effects of the utility model are: the needle tube of the nerve stimulation needle to be tested is fixed by the inspection component, and the simple positioning of the inspection reference surface is achieved by the positioning component. At this time, it is only necessary to observe the deflection direction of the needle tip blade to quickly determine whether the deflection angle of the nerve stimulation needle is within the calibration range, which greatly improves the inspection accuracy and inspection efficiency, quantifies the unified measurement standard, effectively reduces the eye intensity of the staff, and is conducive to the implementation of the production process. It has a clever conception, a simple structure, low cost, and good prospects for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a top view of the utility model;

[0022] Figure 3 It is a top view of the utility model;

[0023] Figure 4 It is a front view of the utility model;

[0024] Figure 5 It is a schematic diagram of the structure of the nerve stimulation needle to be tested in the present utility model;

[0025] Figure 6 for Figure 5 A schematic top view of the nerve stimulation needle when the deflection angle is 0°;

[0026] Figure 7 for Figure 5 A schematic top view of the nerve stimulation needle when the deflection angle is +30°;

[0027] Figure 8 for Figure 5 A schematic top view of the nerve stimulation needle when the deflection angle is -30°;

[0028] Fig. 9 for Figure 6 A front view schematic diagram of

[0029] Fig.10 for Figure 7 A front view schematic diagram of

[0030] Fig.11 for Figure 8 A front view schematic diagram of

[0031] Fig.12 for Figure 8 The overall schematic diagram of

[0032] Fig.13 This is a schematic diagram of a primary positioning of the utility model;

[0033] Fig.14 It is a schematic diagram of secondary positioning of the utility model;

[0034] In the figure: 1-nerve stimulation needle; 2-needle tube; 3-needle seat; 4-needle tip edge; 5-needle tube connector; 6-infusion connector; 7-wire connector; 8-inspection base; 9-positioning base; 10-left inspection slot; 11-right inspection slot; 12-needle tube fixing slot; 13-connector fixing slot; 14-observation inclined slot; 15-left positioning surface; 16-right positioning surface; 17-inspection reference surface; 18-surface to be verified; 19-level bubble meter; 20-support foot. DETAILED DESCRIPTION

[0035] The specific technical solutions of the present invention are further described below so that those skilled in the art can further understand the present invention, but it does not constitute a limitation on the rights thereof.

[0036] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0037] In this embodiment, clockwise (rightward) rotation relative to a vertical plane is defined as a positive direction, and counterclockwise (leftward) rotation is defined as a negative direction.

[0038] Please refer to Figure 5-12The utility model discloses a simple angle inspection tool for a nerve stimulation needle. The nerve stimulation needle to be inspected is a conventional nerve stimulation needle for peripheral nerve block anesthesia on the market. Its structure includes a needle tube 2 and a needle seat 3. One end of the needle seat 3 is connected to the needle tube 2 through a needle tube joint 5. The other end of the needle seat 3 is provided with an infusion joint 6 for connecting an infusion tube. The wire joint 7 for connecting a nerve stimulator is arranged directly above the infusion joint 6. The left and right sides of the needle seat 3 are parallel to the plane (i.e., the inspection reference plane 17) formed by the central axis of the wire joint 7 and the infusion joint 6. As described in the background technology, when the nerve stimulation needle is used, in order to facilitate accurate puncture and positioning, it is necessary to ensure that the angle (i.e., the deflection angle) formed between the symmetric plane (i.e., the surface to be inspected 18) of the needle tip blade and the plane (i.e., the inspection reference plane 17) formed by the central axis of the wire joint and the infusion joint is maintained within the calibration range. The simple angle inspection tool for a nerve stimulation needle described in the utility model is used to detect whether the above-mentioned deflection angle meets the requirements.

[0039] Please refer to Figure 1-14 , a simple angle inspection tool for nerve stimulation needles,

[0040] It includes a testing base 8 and a positioning base 9 arranged on the front side of the testing base 8, on which at least one testing component for testing the deflection angle of the nerve stimulation needle 1 is provided, and on the positioning base 9, a positioning component corresponding to the testing component is provided; the number of positioning components is equal to the number of testing components.

[0041] The inspection assembly includes a left inspection groove 10 and a right inspection groove 11 which are opened on the upper end surface of the inspection base 8 along the front-to-back direction. The left inspection groove 10 and the right inspection groove 11 have the same structure, and both include a joint fixing groove 13 opened backward along the front end surface of the inspection base 8, and a needle tube fixing groove 12 which is deepened backward from the bottom of the joint fixing groove 13; the needle tube fixing groove 12 is used to place and fix the needle tube 2, and the joint placement groove is used to place and fix the needle tube joint 5;

[0042] Since the diameter of the needle tube 2 is relatively small (0.71 mm in this embodiment), it is still difficult to visually observe its deflection direction. Therefore, in order to facilitate the observation of the deflection direction of the needle tip blade surface 4, an observation bevel groove 14 for observing the deflection direction of the needle tip blade surface 4 of the nerve stimulation needle 1 is provided on each needle tube fixing groove 12. The distance between the observation bevel groove 14 and the joint fixing groove 13 is set corresponding to the length of the needle tube 2 of the nerve stimulation needle 1, so that the needle tip blade surface 4 can always be located in the observation bevel groove 14;

[0043] The positioning assembly includes a left positioning surface 15 and a right positioning surface 16 which are symmetrically arranged, wherein the left positioning surface 15 and the right positioning surface 16 are both perpendicular to the front end surface of the inspection base 8.

[0044] Please refer to Figure 4 The symmetry plane of the left positioning surface 15 and the right positioning surface 16 passes through the midpoint of the line between the left inspection slot 10 and the right inspection slot 11. The extended surfaces of the left positioning surface 15 and the right positioning surface 16 intersect upward and form an angle (α) at ​​the intersection. The size of the angle is equal to the difference between the maximum calibration value and the minimum calibration value of the deflection angle of the nerve stimulation needle 1. For example, in this embodiment, the maximum calibration value of the deflection angle of the nerve stimulation needle 1 is +30°, and the minimum calibration value is -30°. Then the size of the above angle α is 60°. Figure 4 At this time, the left positioning surface 15 forms an angle (β1) of +30° relative to the vertical plane, and the right positioning surface 16 forms an angle (β2) of -30° relative to the vertical plane.

[0045] The positioning assembly includes an isosceles trapezoid body that is narrow at the top and wide at the bottom, and the left positioning surface 15 and the right positioning surface 16 are two side surfaces of the isosceles trapezoid body. In order to adapt to more needle seats 3 of different sizes, the left positioning surface 15 and the right positioning surface 16 can be further configured to be able to move synchronously to both sides along the symmetry plane, which will not be expanded in this embodiment. Since only one inspection assembly is included in this embodiment, only one positioning assembly is also provided, and the positioning assembly can be equivalent to the positioning base 9.

[0046] The inspection base 8 is a rectangular body, and the positioning base 9 is fixedly connected to the inspection base 8 to form an integrated structure. This can effectively reduce the size of the tooling and facilitate the staff to take and place.

[0047] In order to more accurately observe the deflection direction of the needle tip blade 4, the tooling should be fixed on a horizontal work surface. However, due to different working environments in workshops, there are relatively uneven work surfaces. Therefore, a level bubble gauge 19 is provided on the upper end surface of the inspection base 8, and six detachable support feet 20 are screwed symmetrically on the bottom surfaces of the positioning base 9 and the inspection base 8. When in use, the levelness of the tooling is confirmed by observing the level bubble gauge 19, and when the tooling is level, the six separately provided support feet 20 are adjusted to abut against the work surface, so that the tooling is in a horizontal state when in use, so that the deflection direction of the needle tip blade 4 can be observed more conveniently and accurately. The bottom end of the support foot 20 is deepened upward to open a threaded fixing hole, which is convenient for being firmly fixed on the work plane by bolts after the adjustment is completed.

[0048] In this embodiment, in order to enhance the flexibility of the tooling, a total of three observation bevels 14 are provided on each needle tube fixing groove 12, and the distance between the observation bevel 14 and the joint fixing groove 13 corresponds to needle tubes 2 of different lengths. In order to more conveniently observe the inclination direction of the needle tip blade 4, the bottom surface of the observation bevel 14 is perpendicular to the plane in the vertical direction, and the front end of the bottom surface of the groove is lower than the rear end of the bottom surface of the groove. The observation bevel 14 is centered on the axis of the needle tube fixing groove 12, and is horizontally symmetrically opened to the left and right sides, and its cross section is a right triangle. An inclination angle for puncture is formed between the needle tip blade 4 of the nerve stimulation needle 1 and the horizontal plane, and the angle between the hypotenuse of the above-mentioned right triangle and the horizontal plane is set corresponding to the inclination angle. For example, in this embodiment, the inclination angle of the needle tip blade 4 is 20°, and the angle between the hypotenuse and the horizontal plane of the right triangle in the cross section of the observation bevel 14 is also 20°.

[0049] The existing method for testing the deflection angle between the needle head of the nerve stimulation needle 1 and the needle seat 3 specifically includes the following steps:

[0050] 1) Determine the reference plane: determine a plane with the central axis of the wire connector 7 and the infusion connector 6 of the nerve stimulation needle 1 to be tested, and determine the plane as the inspection reference plane;

[0051] 2) Determine the surface to be verified: determine the symmetry plane of the needle tip blade surface 4 of the nerve stimulation needle 1 to be tested, and determine the symmetry plane as the surface to be verified 18;

[0052] 3) Determine the inspection standard: the angle formed by the inspection reference surface 17 and the surface to be inspected 18 is used as the deflection angle to be inspected. If the deflection angle is within the calibration range, it is determined to be a qualified product; if the deflection angle is outside the calibration range, it is determined to be a failed product;

[0053] 4) Inspection: Directly inspect by visually observing the deflection angle.

[0054] In this embodiment, the maximum calibration value of the calibration range is +30°, and the minimum calibration value is -30°, that is, the deflection angle of a qualified product should be between [-30°, +30°].

[0055] The method for inspecting the deflection angle between the needle head and the needle seat 3 of the above-mentioned nerve stimulation needle 1, after using the simple angle inspection tool for nerve stimulation needles described in the utility model, specifically comprises the following steps:

[0056] 1) Determine the reference plane: determine a plane with the central axis of the wire connector 7 and the infusion connector 6 of the nerve stimulation needle 1 to be tested, and determine the plane as the inspection reference plane;

[0057] 2) Determine the surface to be verified: determine the symmetry plane of the needle tip blade surface 4 of the nerve stimulation needle 1 to be tested, and determine the symmetry plane as the surface to be verified;

[0058] 3) Determine the inspection standard: the angle formed by the inspection reference surface 17 and the surface to be inspected 18 is used as the deflection angle to be inspected. If the deflection angle is within the calibration range, it is determined to be a qualified product; if the deflection angle is outside the calibration range, it is determined to be a failed product;

[0059] 4) Primary positioning: insert the needle tube connector 5 and the needle tube 2 of the nerve stimulation needle 1 to be tested into the left inspection slot 10 in the inspection assembly, and rotate the nerve stimulation needle so that the right side surface of the needle seat 3 fits with the left positioning surface 15 in the positioning assembly;

[0060] 5) Primary inspection: Determine the direction of the needle tip blade 4. If the needle tip blade 4 faces the right side or the upper side, it indicates that the deflection angle is greater than or equal to the minimum calibration value of the calibration range, so it is temporarily determined as a qualified product and a secondary inspection is performed; if the needle tip blade 4 faces the left side, it indicates that the deflection angle is less than the minimum calibration value of the calibration range, so it is directly determined as a non-qualified product;

[0061] 6) Secondary positioning: insert the needle tube connector 5 and the needle tube 2 of the nerve stimulation needle 1 to be tested into the right inspection slot 11 in the inspection assembly, and rotate the nerve stimulation needle so that the left side surface of the needle seat 3 fits with the right positioning surface 16 in the positioning assembly;

[0062] 7) Secondary inspection: Determine the orientation of the needle tip blade 4. If the needle tip blade 4 is facing left or upward, it indicates that the deflection angle is greater than or equal to the minimum calibration value of the calibration range and less than or equal to the maximum calibration value of the calibration range. Therefore, it is judged as a qualified product. If the needle tip blade 4 is facing left, it indicates that the deflection angle is greater than the maximum calibration value of the calibration range. Therefore, it is judged as an unqualified product.

[0063] In step 4) of the above method, the inspection tool can be adjusted to be horizontal by means of the bubble level 19 and the support feet 20, so as to more conveniently observe the deflection direction of the needle tip blade surface 4. In step 4) and step 5), since the inspection reference plane is parallel to the left and right sides of the needle seat 3, the left positioning surface 15 is equivalent to the inspection reference plane and can be used as an inspection reference to directly judge the size of the deflection angle; at the same time, because there is an angle (β1) between the left positioning surface 15 and the vertical plane, and the size of the angle is exactly equal to half of the difference between the maximum calibration value and the minimum calibration value (the left positioning surface 15 and the right positioning surface 16 are symmetrically arranged, and the angle between their extended surfaces is equal to the difference between the maximum calibration value and the minimum calibration value), it is equivalent to deflecting the originally vertical inspection reference plane to the right by a corresponding angle, so that when the needle tip blade 4 faces upward, the deflection angle is exactly equal to the minimum calibration value of the calibration range. At this time, if the needle tip blade 4 continues to deflect to the left, the deflection angle will be less than the minimum calibration value, and the product will be unqualified. The same is true in step 6) and step 7), which is equivalent to deflecting the inspection reference plane to the left by a corresponding angle, so that when the needle tip blade surface 4 faces upward, the deflection angle is exactly equal to the maximum calibration value of the calibration range. At this time, if the needle tip blade surface 4 continues to deflect to the right, the deflection angle will be greater than the maximum calibration value, and the product is unqualified. The entire detection method is simple, fast, and highly reproducible.

[0064] Compared with the prior art, the utility model fixes the needle tube 2 of the nerve stimulation needle 1 to be tested through the inspection component, and realizes simple positioning of the inspection reference surface through the positioning component. At this time, it is only necessary to observe the deflection direction of the needle tip blade 4 to quickly determine whether the deflection angle of the nerve stimulation needle 1 is within the calibration range, thereby improving the product inspection accuracy and efficiency, reducing the physical loss of staff, quantifying the unified measurement standard, facilitating the implementation of the production process, and having a good prospect for use.

[0065] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A simple angle inspection tool for nerve stimulation needles, characterized by: It comprises a test base and a positioning base arranged at the front side of the test base, wherein at least one test component for testing the deflection angle of the nerve stimulation needle is arranged on the test base, and a positioning component corresponding to the test component is arranged on the positioning base; The inspection assembly includes a left inspection groove and a right inspection groove opened on the end surface of the inspection base along the front-back direction. The left inspection groove and the right inspection groove have the same structure, and both include a joint fixing groove opened backward along the front end surface of the inspection base, and a needle tube fixing groove opened backward from the bottom of the joint fixing groove; An observation oblique groove for observing the deflection direction of the needle tip blade of the nerve stimulating needle is provided on each needle tube fixing groove, and the distance between the observation oblique groove and the joint fixing groove is set corresponding to the needle tube length of the nerve stimulating needle; The positioning assembly comprises a left positioning surface and a right positioning surface which are symmetrically arranged, wherein the left positioning surface and the right positioning surface are both perpendicular to the front end surface of the inspection base. The symmetry planes of the left positioning surface and the right positioning surface pass through the midpoint of the line between the left inspection groove and the right inspection groove, and the extended surfaces of the left positioning surface and the right positioning surface intersect upward and form an angle at the intersection, and the size of the angle is equal to the difference between the maximum calibration value and the minimum calibration value of the deflection angle of the nerve stimulation needle.

2. The simple angle inspection tool for nerve stimulation needle according to claim 1, characterized in that: The positioning assembly comprises an isosceles trapezoidal body which is narrow at the top and wide at the bottom. The left positioning surface and the right positioning surface are two side surfaces of the isosceles trapezoidal body respectively.

3. The simple angle inspection tool for nerve stimulation needle according to claim 1, characterized in that: The inspection base is a rectangular body, a horizontal bubble meter is arranged on the upper end surface of the inspection base, and six detachable supporting feet are screwed symmetrically on the bottom surfaces of the positioning base and the inspection base.

4. The simple angle inspection tool for nerve stimulation needle according to claim 3, characterized in that: The bottom end of the support foot is deepened upward to form a threaded fixing hole.

5. The simple angle inspection tool for nerve stimulation needle according to claim 1, characterized in that: There are three observation bevel grooves on each needle tube fixing groove to correspond to the needle tubes of nerve stimulation needles of different lengths.

6. The simple angle inspection tool for nerve stimulation needle according to claim 1, characterized in that: The bottom surface of the observation chute is perpendicular to the plane in the vertical direction, and the front end of the bottom surface is lower than the rear end of the bottom surface.

7. The simple angle inspection tool for nerve stimulation needle according to claim 6, characterized in that: The observation inclined groove is symmetrically opened to the left and right sides with the axis of the needle tube fixing groove as the center.

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