Medical puncture guide needle

Abstract

The utility model relates to medical apparatus and instruments accessory technical field especially, more particularly to a kind of medical puncture guide needle, including needle body and connecting body, needle body includes needle part and head, head side is provided with several bosses, connecting body is covered head and forms sealed connection, needle body is the groove type structure with accommodating groove, the lower portion of boss is provided with the connecting hole being linked with accommodating groove, head tail end is provided with the plane section being Y-shaped, the width of plane section is greater than the width of needle body, the end of plane section is provided with notch. The present application is provided with the plane section being Y-shaped, and the end of plane section is provided with notch, reduce the connecting area of plane section and material band, so that the volume of plane section is smaller and bifurcate, airflow passage is separated and not easy to pass through, when shaking off, the combination of plane section and connecting body can be avoided to be damaged, ensure the air tightness of guide needle.

Description

Technical Field

[0001] This utility model relates to the field of medical device accessories technology, and in particular to a medical puncture guide needle. Background Technology

[0002] A blood glucose meter, also known as a blood glucose meter, is an electronic instrument that measures blood glucose levels. Blood glucose meters are classified 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. Currently, the mainstream blood glucose meters in China use the electrochemical method. 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.

[0003] In continuous glucose monitoring (CGM) devices, a guide needle is required when implanting the sensor. Therefore, the guide needle needs to be implanted in the human body, requiring waterproofing, dustproofing, and sterilization, while ensuring measurement accuracy. This necessitates high airtightness. For example, a Chinese utility model patent for a guide needle (application number: 202421153957.5) discloses a design comprising a needle body and a connector. The needle body includes a needle portion and a head, with several protrusions on one side of the head. The connector is sealed to the needle body at the head. The head is groove-shaped, with the protrusions protruding from both sides of the groove-shaped head. A first hole is provided below the protrusions. When the connector is sealed to the needle body, it passes through the first hole, connecting the upper and lower parts of the connector together and securing it 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.

[0004] However, in actual production and use, although the guide pins are designed with bosses and first holes to form a structure that obstructs gas flow, the internal airflow channels still exist, and the airtightness problem cannot be completely eliminated. In particular, the effect of the connection between the pin body and the connector is crucial. For example, the flat connecting strip is a connecting strip. After the connector is injection molded, it needs to be broken. However, the breaking area of ​​the flat connecting strip is large, which can easily damage the connection with the connector, thus affecting the airtightness of the guide pin. Utility Model Content

[0005] The purpose of this utility model is to provide a medical puncture guide needle, which addresses the shortcomings of the existing technology and aims to solve the technical problems of existing guide needles having internal airflow channels, large breakage area of ​​planar connecting material, easy damage to the connection with the connecting body, and affecting airtightness.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a medical puncture guide needle, comprising a needle body and a connector, the needle body comprising a needle portion and a head, a plurality of protrusions being provided on one side of the head, the connector covering the head to form a sealed connection, the needle body having a groove-shaped structure with a receiving groove, a connecting hole communicating with the receiving groove being provided below the protrusions, and a Y-shaped planar segment being provided at the tail end of the head, the width of the planar segment being greater than the width of the needle body, and a notch being provided at the end of the planar segment.

[0007] Furthermore, the planar segment includes a first segment and a second segment that are symmetrically distributed, with the ends of the first segment and the second segment arranged longitudinally and parallel to each other.

[0008] Furthermore, each boss has a recessed area at its front end.

[0009] Furthermore, the front end of the connector is provided with a fixing hole located below the head, and the fixing hole corresponds vertically to the receiving groove.

[0010] Compared with the prior art, the beneficial effects of this application are: by setting a Y-shaped planar segment with a notch at the end of the planar segment, the connection area between the planar segment and the material strip is reduced, making the volume of the planar segment smaller and branched, the airflow channels are separated and not easy to pass through, and when broken, the connection between the planar segment and the connecting body can be avoided, ensuring the airtightness of the guide pin. Attached Figure Description

[0011] 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.

[0012] Figure 1 This is a three-dimensional structural diagram of the material-carrying belt after injection molding of this utility model; Figure 2 This is a schematic diagram of the three-dimensional structure of this utility model; Figure 3 This is a cross-sectional view of the three-dimensional structure of this utility model; Figure 4 This is a schematic diagram of the needle body in this utility model.

[0013] The details of the reference numerals used in the above figures are as follows: 1-Needle body, 11-Needle section, 12-Head, 13-Receiving groove, 14-Boss, 15-Connecting hole, 16-Flat section, 161-First section, 162-Second section, 163-Notch, 17-Dent; 2-Connector, 21-Fixing hole. Detailed Implementation

[0014] In the description of this application, the term "several" refers to two or more (including two). Technical terms such as "first," "second," etc., are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the quantity, specific order, or primary / secondary relationship of the indicated technical features. Terms such as "installation," "connection," and "linking" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" 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.

[0015] In the description of this application, the technical terms "upper", "lower", "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.

[0016] 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.

[0017] like Figures 1 to 4 As shown, a medical puncture guide needle includes a needle body 1 and a connector 2. The needle body 1 includes a needle portion 11 and a head 12. A plurality of protrusions 14 are provided on one side of the head 12. The connector 2 covers the head 12 to form a sealed connection. The needle body 1 has a groove-shaped structure with a receiving groove 13. A connecting hole 15 communicating with the receiving groove 13 is provided below the protrusions 14. A Y-shaped planar segment 16 is provided at the tail end of the head 12. The width of the planar segment 16 is greater than the width of the needle body 1. A notch 163 is provided at the end of the planar segment 16.

[0018] With the above scheme, the head 12 is provided with a Y-shaped planar segment 16 at the tail end, and the end of the planar segment 16 is provided with a notch 163. After the connector 2 is injection molded, it covers the head 12, which can reduce the connection area between the planar segment 16 and the material strip, making the volume of the planar segment 16 smaller and branched, the airflow channels are separated and not easy to pass through. When the planar segment 16 breaks with the material strip, it can reduce the area of ​​the planar segment 16 breaking along the side of the connector 2, effectively avoiding damage to the connection between the planar segment 16 and the connector 2, so that the needle body 1 forms a multi-obstruction design to ensure the airtightness of the guide needle.

[0019] In this embodiment, the needle body 1 is a metal product and the connector 2 is a plastic product. During manufacturing, the processed needle body 1 can be placed in a mold for in-mold injection molding to produce the connector 2, thereby ensuring the airtightness of the structure and the tight fit between the needle body 1 and the connector 2. In addition, the boss 14 is a protruding structure of the needle body 1. Two bosses 14 are continuously set to further obstruct the airflow. Together with the connector 2 injection molding, they ensure the airtightness of the guide needle. After the needle body 1 and the connector 2 are connected, the boss 14 can also prevent the needle body 1 from sliding longitudinally, improve the structural strength at the head 12, and improve the stability and firmness of the structure.

[0020] Furthermore, the connecting hole 15 is disposed below the boss 14 and is connected to the receiving groove 13. Therefore, during the injection molding of the connector 2, on the one hand, it forms a sealed connection structure with the needle body 1, and on the other hand, the connector 2 can be connected to the head 12 through the connecting hole 15, so that the upper and lower parts of the connector 2 are connected as a whole, so that the connector 2 is locked with the needle body 1 through the connecting hole 15, so that the needle body 1 will not slip longitudinally, improving the stability and structural strength of the connection, and further forming an obstruction of the airflow channel, effectively preventing gas from flowing along the needle part 11 towards the head 12; the width of the flat section 16 is greater than the width of the needle body 1, which can further prevent the needle body 1 from slipping longitudinally or loosening.

[0021] Finally, since the needle body 1 has a groove-shaped structure with a receiving groove 13, the adhesive material will also enter the receiving groove 13 at the head 12 during the injection molding of the connector 2, which can prevent the needle body 1 from sliding laterally and enhance the stability of the structure; the end of the flat section 16 forms a notch 163. When the connector 2 and the needle body 1 are sealed together, the connector 2 forms a vertical blocking structure by connecting the upper and lower parts through the notch 163, which further prevents the needle body 1 from sliding longitudinally, and reduces the opening formed by the flat section 16 breaking on the side of the connector 2, that is, reduces the airflow channel and makes it easy to break.

[0022] like Figure 2 and Figure 4 As shown, in one specific embodiment of the improvement, the planar segment 16 includes a first segment 161 and a second segment 162 that are symmetrically distributed, with the ends of the first segment 161 and the second segment 162 arranged longitudinally and parallel to each other.

[0023] Specifically, the first segment 161 and the second segment 162 are formed by bending outwards from both sides of the tail end of the head 12, so that the width of the planar segment 16 is greater than the width of the needle body 1, and the ends of the first segment 161 and the second segment 162 are parallel in the longitudinal direction. This design makes it easy for the first segment 161 and the second segment 162 to break along the side of the connecting body 2, which enhances the flexibility of the airflow direction and facilitates subsequent production and processing, avoiding other factors from affecting the bonding effect.

[0024] like Figure 4 As shown, in one specific embodiment of the improvement, each boss 14 is provided with a recess 17 at its front end.

[0025] Specifically, in this embodiment, there are two protrusions 14. Of course, in some embodiments, the number of protrusions 14 can be set according to the requirements, such as 3 or 4. Each protrusion 14 has a recess 17 at its front end, making the protrusion 14 steeper than the recess, which makes the airflow direction more curved. Combined with the design of the connecting hole 15, the gas needs to change its flow direction multiple times in order to enter the interior from the outside, making the airflow more difficult to pass through and ensuring the airtightness of the guide needle.

[0026] like Figure 2 and Figure 3 As shown, in one specific embodiment of the improvement, the front end of the connector 2 is provided with a fixing hole 21 located below the head 12, and the fixing hole 21 corresponds vertically to the receiving groove 13.

[0027] Specifically, after the connector 2 is injection molded, the front part of the connector 2 near the needle 11 is semi-enclosed, so that the receiving groove 13 at the front end of the head 12 is exposed. The fixing hole 21 penetrates the connector 2 to the bottom of the head 12. When the connector 2 is injection molded, a fixing insert block can be set in the receiving groove 13 to press the needle 1. The fixing post is set at the connecting hole 15 to hold the needle 1, forming a limiting and fixing structure for the needle 1 during processing, ensuring the accuracy and stability of the guide needle molding.

[0028] 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 medical puncture guide needle, comprising a needle body (1) and a connector (2), wherein the needle body (1) comprises a needle portion (11) and a head (12), a plurality of protrusions (14) are provided on one side of the head (12), the connector (2) covers the head (12) to form a sealed connection, the needle body (1) is a groove-shaped structure with a receiving groove (13), and a connecting hole (15) communicating with the receiving groove (13) is provided below the protrusions (14), characterized in that, The head (12) has a Y-shaped planar segment (16) at its tail end. The width of the planar segment (16) is greater than the width of the needle body (1). The end of the planar segment (16) has a notch (163).

2. The medical puncture guide needle according to claim 1, characterized in that, The planar segment (16) includes a first segment (161) and a second segment (162) that are symmetrically distributed. The ends of the first segment (161) and the second segment (162) are arranged longitudinally and are parallel to each other.

3. The medical puncture guide needle according to claim 1, characterized in that, Each of the bosses (14) has a recess (17) at its front end.

4. A medical puncture guide needle according to claim 1, characterized in that, The connector (2) has a fixing hole (21) at its front end, which is located below the head (12). The fixing hole (21) corresponds vertically to the receiving groove (13).

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