A connection structure of a guide needle material tape

Abstract

The utility model relates to continuous blood glucose monitor technical field especially relates to a kind of connecting structure of guide needle material belt, including integrally punch forming guide needle and material belt, guide needle includes needle body and the needle tip section of being set to needle body one end, material belt includes the positioning section for auxiliary processing, at least one connecting section with the perpendicular connection of positioning section and the built-in sheet fixedly connected with connecting section, built-in sheet is fixedly connected with needle body, to make connecting section and needle body be set to the same side of built-in sheet, needle tip section is towards and close to positioning section, built-in sheet is connected with plastic piece, and connecting section and needle body part intrude the front end of plastic piece. The structure design of the application by guide needle is placed in the interval of material belt, both can guarantee the firmness of guide needle, greatly shorten the length of guide needle, to reduce production cost, increase the rigidity of guide needle, improve the stability of processing.

Description

Technical Field

[0001] This utility model relates to the field of continuous blood glucose monitoring technology, and in particular to a connection structure for a guide needle tape. Background Technology

[0002] A continuous glucose monitor (CGM) is a medical device that tracks the concentration of glucose in interstitial fluid in real time through a miniature sensor implanted under the skin. It can indirectly reflect blood glucose levels. Its core value lies in providing continuous and dynamic blood glucose data to help users fully understand the patterns of blood glucose fluctuations. The guide needle is the core component of the continuous glucose monitoring system (CGM) and is used to quickly and painlessly implant the sensor into the subcutaneous tissue.

[0003] Currently, in order to meet the needs of automation and precision machining during the production and processing of traditional guide pins, stainless steel sheets are often processed into a connection structure between the strip and the guide pin (see...). Figure 1 The guide pin is formed under the support of the strip and undergoes multiple processing steps. Then, the rear section of the guide pin is formed into a plastic part through in-mold injection molding. Next, the strip is broken along the end face of the plastic part to form a structure that fixes the guide pin to the plastic part, which facilitates subsequent assembly. However, in the above structure, one end of the guide pin is on the same side as the plastic part, and the other end extends out of the plastic part, so that the guide pin passes through the entire plastic part. This results in a long guide pin, higher material cost, and the rigidity of the slender guide pin is significantly reduced. It is also prone to center of gravity shift, which affects the stability of the guide pin in multiple processing steps. Utility Model Content

[0004] The purpose of this utility model is to provide a connection structure for the guide pin strip, which addresses the shortcomings of the existing technology and aims to solve the technical problems of the existing guide pins being too long, having high material costs, and affecting processing stability.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a connecting structure for a guide needle and a strip, comprising an integrally stamped guide needle and a strip, the guide needle comprising a needle body and a needle tip segment disposed at one end of the needle body, the strip comprising a positioning segment for auxiliary processing, at least one connecting segment perpendicularly connected to the positioning segment, and an inner plate fixedly connected to the connecting segment, the inner plate being fixedly connected to the needle body such that the connecting segment and the needle body are disposed on the same side of the inner plate, the needle tip segment facing and close to the positioning segment, the inner plate being connected to a plastic part, and the connecting segment and the needle body portion extending into the front end of the plastic part.

[0006] The present invention is further configured such that: the built-in piece is provided with a through hole, and the built-in piece is a rectangular structure.

[0007] The present invention is further configured such that: the connecting segment is placed on one side of the needle body, and the connecting segment includes a first straight segment, a second straight segment and a third straight segment connected vertically in sequence, the first straight segment and the third straight segment are parallel to the needle body, and the third straight segment is connected vertically to the positioning segment.

[0008] The present invention is further configured such that: the first straight segment is vertically connected to the end of the second straight segment near the needle body, and both the first straight segment and the second straight segment have a gap with the needle body.

[0009] The present invention is further configured such that: the first straight segment is provided with a groove near the side end face of the plastic part.

[0010] The present invention is further configured such that the positioning section is provided with positioning holes.

[0011] Compared with the prior art, the beneficial effects of this application are as follows: By connecting the built-in piece of the material strip to the end of the needle body, and extending the connecting section along the needle body towards the needle tip, the needle tip faces and approaches the positioning section. Finally, the front end of the plastic part is fixed with the built-in piece, part of the connecting section, and the needle body. This not only ensures the firmness of the guide needle, but also greatly shortens the length of the guide needle, thereby reducing production costs and increasing the rigidity of the guide needle. At the same time, the material strip is set along the length of the guide needle, so that the guide needle is placed within the range of the material strip, effectively preventing the center of gravity from shifting and improving the stability of production. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the connection structure between the guide pin and the material strip in the prior art;

[0014] Figure 2 This is a schematic diagram of the connection structure between the guide pin and the material strip in this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of this utility model after the injection molding process;

[0016] Figure 4 This is a structural diagram of the material strip in this utility model after the breaking process.

[0017] The details of the reference numerals used in the above figures are as follows:

[0018] 1-Guide needle, 11-Needle body, 12-Needle tip;

[0019] 2-Material strip, 21-Positioning section, 211-Positioning hole, 22-Connecting section, 221-First straight section, 222-Second straight section, 223-Third straight section, 224-Score, 23-Built piece, 231-Through hole;

[0020] 3-Plastic part, 4-Gap. Detailed Implementation

[0021] In the description of this application, the term "several" refers to two or more (including two). The terms "connected," "linked," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "linked" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0022] In the description of this application, the technical terms "left", "right", "front", "rear", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0023] In order to better understand the above-mentioned objectives, technical solutions and advantages of this application, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings, and to understand in detail how to solve the problems raised in the background art.

[0024] like Figures 2 to 4 As shown, a connecting structure for a guide needle strip includes an integrally stamped guide needle 1 and a strip 2. The guide needle 1 includes a needle body 11 and a needle tip segment 12 disposed at one end of the needle body 11. The strip 2 includes a positioning segment 21 for auxiliary processing, at least one connecting segment 22 perpendicularly connected to the positioning segment 21, and an inner plate 23 fixedly connected to the connecting segment 22. The inner plate 23 is fixedly connected to the needle body 11 so that the connecting segment 22 and the needle body 11 are disposed on the same side of the inner plate 23. The needle tip segment 12 faces and is close to the positioning segment 21. The inner plate 23 is connected to a plastic part 3, and the connecting segment 22 and the needle body 11 partially extend into the front end of the plastic part 3.

[0025] With the above solution, the front end of the plastic part 3 is fixed with the built-in piece 23 and part of the connecting section 22 and the needle body 11, which can not only ensure the firmness of the guide needle 1, but also greatly shorten the length of the guide needle 1, thereby reducing production costs and increasing the rigidity of the guide needle 1. At the same time, the built-in piece 23 is connected to the needle body 11, and the needle tip section 12 faces the positioning section 21, so that the guide needle 1 is placed within the range of the material strip 2, effectively preventing the center of gravity from shifting and improving the stability of production.

[0026] In this embodiment, such as Figure 2 As shown, the guide pin 1 and the material strip 2 are integrally stamped from stainless steel sheets. Under the support of the material strip 2, the guide pin 1 undergoes multiple processing steps. The positioning section 21, connecting section 22, and inner plate 23 are connected sequentially from left to right. The inner plate 23 is a rectangular piece. The connecting section 22 and the pin body 11 are both fixed to the same side of the inner plate 23. The length of the connecting section 22 is greater than the length of the guide pin 1, so that the pin tip 12 faces and is close to the positioning section 21. However, there is a suitable processing distance between the pin tip 12 and the positioning section 21 to avoid the material strip 2 affecting the processing of the guide pin 1. Figure 3 As shown, after in-mold injection molding, the plastic part 3 covers the built-in sheet 23, part of the connecting section 22, and part of the needle body 11, so that the plastic part 3 can fix the guide needle 1, as shown. Figure 4 As shown, the final connecting segment 22 breaks at the connection with the plastic part 3, thereby separating the guide pin 1 from the material strip 2 to facilitate subsequent assembly. In practical applications, the material strip 2 serves as a carrier for the processing of the guide pin 1, used to fix the guide pin 1 and ensure the stability and accuracy of the pin body 11 during processing. In some embodiments, the positioning segment 21 can be provided with several connecting segments 22, and each connecting segment 22 has a guide pin 1, so that the guide pin 1 can be efficiently transferred between different processing steps, such as stamping, polishing and grinding, thereby improving production efficiency and quality consistency.

[0027] like Figure 2 and Figure 3 As shown, in one specific embodiment of the improvement, the built-in piece 23 is provided with a through hole 231, and the built-in piece 23 has a rectangular structure. Specifically, the connecting section 22 and the needle body 11 are fixed to the left side of the built-in piece 23, and the through hole 231 penetrates the built-in piece 23. The through hole 231 can be one of a circle, a square, or a trapezoid. During in-mold injection molding, the through hole 231 can become a channel for the flow of molten plastic, thereby increasing the contact area between the built-in piece 23 and the plastic part 3, improving production efficiency and bonding strength.

[0028] like Figure 2As shown, in one specific embodiment of the improvement, the connecting segment 22 is placed on one side of the needle body 11. The connecting segment 22 includes a first straight segment 221, a second straight segment 222, and a third straight segment 223 connected vertically in sequence. The first straight segment 221 and the third straight segment 223 are both parallel to the needle body 11, and the third straight segment 223 is perpendicularly connected to the positioning segment 21. Specifically, the needle body 11, the built-in piece 23, the connecting segment 22, and the positioning segment 21 are an integral structure to ensure structural strength. At the same time, the second straight segment 222 extends outward and away from the needle body 11, leaving sufficient space for the processing of the needle tip segment 12, avoiding the influence of the connecting segment 22 and the positioning segment 21 on the processing of the guide needle 1. Finally, the first straight segment 221 is fixedly connected to the built-in piece 23, that is, part of the first straight segment 221, part of the needle body 11, and the built-in piece 23 are all fixed to the front end of the plastic part 3, which can ensure the structural strength of the guide needle 1 and the plastic part 3.

[0029] like Figure 2 and Figure 3 As shown, in one specific embodiment of the improvement, the first straight segment 221 is vertically connected to the end of the second straight segment 22 near the needle body 11, and both the first straight segment 221 and the second straight segment 222 have a distance 4 between them and the needle body 11. Specifically, the first straight segment 221 and the second straight segment 222 are coplanar on the surfaces facing the needle body 11, so that both the first connecting segment 22 and the second straight segment 22 have the same distance 4 between them and the needle body 11. This distance 4 avoids interfering with the processing of the needle body 11, and the distance 4 near the front end of the built-in piece 23 allows for the filling of molten plastic during injection molding, further strengthening the bond strength between the guide needle 1 and the plastic part 3.

[0030] like Figure 2 and Figure 4 As shown, in one specific embodiment of the improvement, the first straight segment 221 is provided with a notch 224 near the side end face of the plastic part 3. Specifically, after both the connecting segment 22 and the needle body 11 are partially fixed to the plastic part 3, the side of the plastic part 3 is precisely positioned at the notch 224. The connecting segment 22 is broken through the notch 224, which enables controlled fracture, facilitates the separation of the needle body 11 from the material strip 2, aids in subsequent assembly, and ensures that the final shape and size of the guide needle 1 meet the design requirements.

[0031] like Figure 2 As shown, in one specific embodiment of the improvement, the positioning segment 21 is provided with positioning holes 211. Specifically, the positioning segment 21 can be long and rectangular. In actual processing, the number of positioning holes 211 can also be several and evenly distributed. These positioning holes 211 match the positioning pins of the automated equipment, which can prevent the guide pin from deviating and ensure the accurate positioning of the guide pin 1 during transmission and processing.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. All technical solutions within the scope of this utility model's concept are within the protection scope of this utility model. It should be pointed out that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A connecting structure for a guide pin and a strip, comprising an integrally stamped guide pin and a strip, wherein the guide pin includes a pin body and a tip section disposed at one end of the pin body, characterized in that, The strip includes a positioning section for auxiliary processing, at least one connecting section perpendicularly connected to the positioning section, and an inner plate fixedly connected to the connecting section. The inner plate is fixedly connected to the needle body so that the connecting section and the needle body are located on the same side of the inner plate, the needle tip is facing and close to the positioning section, the inner plate is connected to a plastic part, and the connecting section and the needle body extend into the front end of the plastic part.

2. The connection structure of the guide needle tape according to claim 1, characterized in that, The built-in piece has a through hole and is rectangular in structure.

3. The connection structure of the guide needle tape according to claim 1, characterized in that, The connecting segment is placed on one side of the needle body. The connecting segment includes a first straight segment, a second straight segment, and a third straight segment that are connected vertically in sequence. The first straight segment and the third straight segment are parallel to the needle body, and the third straight segment is connected vertically to the positioning segment.

4. The connection structure of the guide needle tape according to claim 3, characterized in that, The first straight line segment is perpendicularly connected to the end of the second straight line segment near the needle body, and there is a gap between the first straight line segment and the second straight line segment and the needle body.

5. The connection structure of the guide needle tape according to claim 4, characterized in that, The first straight segment has a groove near the side end face of the plastic part.

6. The connection structure of the guide needle tape according to claim 1, characterized in that, The positioning section is provided with positioning holes.

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