A guide needle structure

Abstract

This utility model discloses a guide needle structure, including a needle body and a connector. The connector has a cap at the top. The needle body includes a needle part and a head. The head has a flat connecting material, which extends from the head to both sides to form a Z-shaped barb. The ends of the barbs protrude from the inside of the connector to both sides. This utility model effectively solves the problem of direct gas leakage to the outside and significantly enhances the airtightness of the entire guide needle structure.

Description

Technical Field

[0001] This utility model relates to the field of medical device accessories technology, specifically a guide needle structure. Background Technology

[0002] A blood glucose meter, also known as a blood glucose meter, is an electronic instrument used to measure blood glucose levels. Blood glucose meters are categorized into two types based on their working principle: photoelectric and electrode-based. Electrode-based blood glucose meters have a more scientific testing principle, and the electrodes can be internally mounted. To date, blood glucose meter technology has undergone five stages of development. The first three generations primarily used the light reflection method to measure blood glucose concentration, while the fourth and fifth generations mainly relied on electrochemical methods. Currently, the mainstream blood glucose meters in China use the electrochemical method. Compared to the fourth generation, the fifth generation has made some improvements in details such as micro-blood sampling and multi-site blood sampling. Admittedly, there is a tendency for homogenization in the current blood glucose meter market, with little difference in basic functions. However, how to achieve more precise measurements and greater convenience for patients remains a common goal for all companies. Mobile internet, continuous glucose monitoring, and non-invasive blood glucose monitoring are the three main directions of current blood glucose meter development. Mobile blood glucose meters fully utilize mobile internet technology, combining with mobile devices such as smartphones and tablets to provide real-time analysis results and store them in the cloud, facilitating monitoring by doctors and individuals. The mobile blood glucose meter connects to a mobile phone via the headphone jack. The test results are stored and processed through the mobile phone software, and have multiple functions such as saving, automatic analysis, sharing, and reminders.

[0003] The publication number CN222917531U, entitled "A Guide Needle," discloses "a guide needle comprising a needle body and a connecting body; wherein the needle body includes a needle portion and a head, and one side of the head includes several protrusions; the connecting body is sealed to the needle body at the head. The head is groove-shaped, and the protrusions are raised on both sides of the groove-shaped head. A first hole is provided below the protrusions; when the connecting body is sealed to the needle body, the connecting body passes through the first hole, connecting the upper and lower parts of the connecting body together, and is clamped to the needle body through the first hole. The head is provided with a flat connecting material, the width of which is greater than the width of the needle body. The beneficial effects of this utility model are: good airtightness and stable structure." However, the needle portion vertically penetrates the connecting body, resulting in poor airtightness. Summary of the Invention

[0004] In order to overcome the shortcomings of existing technical solutions, this utility model provides a guide needle structure that can effectively solve the problem of poor airtightness between the needle and the connecting part mentioned in the background art.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a guide needle structure, including a needle body and a connecting body. A cap is provided on the top of the connecting body. The needle body includes a needle part and a head. The head is provided with a flat connecting material. The flat connecting material is a Z-shaped barb extending from the head to both sides. The end of the barb protrudes from the inside of the connecting body to both sides.

[0006] Furthermore, the connector is provided with positioning holes.

[0007] Furthermore, the needle body has a sidewall vertically arranged along its edge.

[0008] Furthermore, the connector is provided with a groove, and the sidewall is embedded into the side of the groove.

[0009] Furthermore, slots are provided on both sides of the cap body and the connecting body.

[0010] Furthermore, the top two sides of the cap body are provided with chamfered structures.

[0011] Furthermore, the width of the planar connecting material is the same as the width of the needle body.

[0012] Furthermore, the planar connecting material is connected to a material belt.

[0013] Compared with the prior art, the beneficial effects of this utility model are: it effectively solves the problem of direct gas leakage to the outside and significantly enhances the airtightness of the entire guide needle structure. Attached Figure Description

[0014] Figure 1 The structural three-dimensional representation of this utility model Figure 1 ; Figure 2 The structural three-dimensional representation of this utility model Figure 2 ; Figure 3 This is a schematic cross-sectional view of the planar connecting material structure of this utility model; Figure 4 This is a schematic diagram of the material strip structure of this utility model.

[0015] Numbering on the map: 1-Needle body, 2-Connector body, 3-Cap body, 4-Positioning hole, 5-Slot, 6-Flat connecting material, 7-Material strip, 11-Needle part, 12-Head, 21-Groove body. Detailed Implementation

[0016] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0017] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. This disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this disclosure. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0018] like Figure 1-4 As shown, this utility model provides a guide needle structure, including a needle body 1 and a connecting body 2. A cap body 3 is provided on the top of the connecting body 2. The needle body 1 includes a needle part 11 and a head 12. The head 12 is provided with a flat connecting material 6. The flat connecting material 6 extends from the head 12 to both sides to form a Z-shaped barb. The end of the barb protrudes from the inside of the connecting body 2 to both sides.

[0019] The traditional design of the needle 11 penetrating vertically through the connector 2 allows gas to leak directly outwards along the gap between the needle 11 and the connector 2, making it difficult to guarantee airtightness. However, the planar connecting material 6 is designed as a Z-shaped barb extending from the head 12 to both sides, with the ends of the barbs protruding from inside the connector 2 to both sides, changing the gas leakage path. Gas no longer leaks directly from the needle 11 vertically, but can only leak to the sides. Since the sides are in the same sealed space as the head 12, gas leakage to the sides is constrained by space and the surrounding structure, significantly increasing the difficulty of leakage. This effectively solves the problem of direct gas leakage to the outside and significantly enhances the airtightness of the entire guide needle structure.

[0020] The Z-shaped barb design increases the contact area and the number of connection points between the flat connecting material 6 and the connecting body 2. When the end of the barb protrudes from the inside of the connecting body 2 to both sides, it forms a more complex and stable mechanical connection structure with the connecting body 2. This multi-directional connection method makes the combination between the needle body 1 and the connecting body 2 tighter, and it is not easy to loosen or separate when subjected to external forces, which greatly improves the stability of the entire guide needle structure. During use, the guide needle may be subjected to forces in various directions, such as resistance during insertion and pulling force during withdrawal. The Z-shaped barb structure can distribute these stresses to multiple directions and connection points, avoiding stress concentration in one part that could lead to structural damage.

[0021] See Figure 1The connector 2 is provided with a positioning hole 4. During injection molding of the guide pin connector 2, the positioning hole 4 can precisely engage with the positioning pin on the injection mold. This engagement is like the relationship between a key and a lock; the positioning pin is inserted into the positioning hole 4, accurately fixing the connector 2 in a specific position on the mold. This ensures that the position and height of the connector 2 in the mold are consistent each time it is injected, avoiding problems such as inconsistent dimensions and shape deformation of the injection molded product caused by positional deviations. This ensures the injection molding accuracy of the guide pin connector 2, making it meet design requirements.

[0022] See Figure 1 and Figure 2 The needle body 1 has a vertically arranged sidewall at its edge. The vertical sidewall increases the rigidity of the needle body 1 and effectively resists the bending stress generated during puncture.

[0023] See Figure 2 The connector 2 is provided with a groove 21, and the sidewall is embedded into the side of the groove 21.

[0024] After the sidewall is embedded into the side of the groove 21, the two form a mechanical interlocking structure with a "concave-convex fit". When subjected to lateral force or torque, the sidewall of the groove 21 will restrain the displacement of the sidewall, preventing relative sliding or rotation between the connector 2 and the component containing the sidewall. The embedded structure disperses local stress to the contact surface between the groove 21 and the sidewall, reducing the risk of stress concentration. Under high-frequency vibration or impact load environments, this design can extend the service life of the connection parts.

[0025] See Figure 1 and Figure 2 The cap body 3 and the connecting body on both sides are provided with slots 5.

[0026] See Figure 1 and Figure 2 The top two sides of the cap body 3 are provided with a chamfered structure.

[0027] See Figure 3 The width of the flat connecting material 6 is the same as the width of the needle body 1. When the widths of the flat connecting material 6 and the needle body 1 are the same, the contact surfaces of the two are completely in contact, and the stress is evenly distributed when subjected to force, avoiding local stress concentration that could cause the needle body 1 to bend, break, or the connecting material to break.

[0028] See Figure 4 The flat connecting material 6 is connected to the material strip 7. The material strip 7 is the process edge material, which needs to be broken or cut off with special equipment before the product is injection molded.

[0029] In the description of this utility model, it should be understood that the terms "middle", "length", "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", "radial", "circumferential", 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 this utility model 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 this utility model.

[0030] In this invention, unless otherwise expressly specified and limited, the first feature "on" the second feature may be in direct contact with the first feature, or indirect contact with the first feature through an intermediate medium. "A plurality of" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] The above description is merely illustrative of the embodiments of this utility model and is not intended to limit the scope of this utility model. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model without creative labor should be included within the protection scope of this utility model.

Claims

1. A guide needle structure, comprising a needle body and a connecting body, wherein a cap is provided on the top of the connecting body, the needle body includes a needle portion and a head, and the head is provided with a planar connecting material, characterized in that, The planar connecting material is formed by Z-shaped barbs extending from the head to both sides, with the ends of the barbs protruding from the inside of the connecting body to both sides.

2. The guide pin structure according to claim 1, characterized in that: The connector is equipped with a positioning feature.

3. The guide pin structure according to claim 1, characterized in that: The needle body has a sidewall vertically arranged along its edge.

4. The guide pin structure according to claim 3, characterized in that: The connector is provided with a groove, and the sidewall is embedded into the side of the groove.

5. The guide pin structure according to claim 1, characterized in that: Both sides of the cap and the connecting body are provided with slots.

6. The guide pin structure according to claim 1, characterized in that: The top two sides of the cap are provided with a chamfered structure.

7. The guide pin structure according to claim 1, characterized in that: The width of the planar connecting material is the same as the width of the needle body.

8. A guide pin structure according to any one of claims 1 to 7, characterized in that: The planar connecting material is connected to a material belt.

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