Trace puncture injection needle

Abstract

The utility model discloses a trace puncture injection needle, which relates to the technical field of injection needles, and comprises a sleeve shell and a mounting column assembled with the sleeve shell, and the mounting column is arranged in the sleeve shell; a second step part and a first step part are arranged at the upper part of the mounting column, the first step part is arranged at the upper part of the sleeve shell, and the first step part is matched with the second step part; the threaded groove is formed in the lower portion of the mounting column and used for being in butt joint with an injector needle tube; the long needle body is arranged in the middle of the mounting column, the top end of the long needle body penetrates through the second step part and is provided with a tip opening, and the bottom end of the long needle body penetrates through the bottom of the mounting column and forms an extension section used for puncturing the medicament protection cap. By means of the installation design of the threaded groove where the installation column is located, the medicine assembly process of the syringe can be rapidly completed, meanwhile, the puncturing function of the long needle body is matched, medicine can be automatically started, and work efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection needles, in particular to a micro-puncture injection needle. Background Art

[0002] A micro syringe is a tool commonly used in the medical and research fields. It can accurately inject drugs or other substances into the human body or experimental samples. In the medical field, it is widely used for treating diseases or performing hormone replacement therapies, such as insulin injection;

[0003] However, in the actual use process, it is often necessary to continuously replace the medicine cartridge. First, the existing replacement process is complicated and inefficient. Second, it does not have an automatic piercing function and requires manual piercing of the medicine cartridge to be enabled, which is very inconvenient. Therefore, a micro-puncture injection needle is provided. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a micro-puncture injection needle. Through the installation design of the threaded groove where the installation column is located, the assembly process of the syringe medicine can be quickly completed. At the same time, with the piercing effect of the long needle body, the automatic activation of the medicine is realized, which greatly improves the work efficiency.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A micro-puncture injection needle, comprising: a sleeve, and an installation column assembled with the sleeve, the installation column is placed inside the sleeve; a second step portion is provided on the upper part of the installation column, and a first step portion is provided on the upper part of the sleeve, and the first step portion is adapted to the second step portion; a threaded groove provided at the lower part of the installation column for docking with the syringe needle tube; and a long needle body placed in the middle of the installation column, the top end of the long needle body penetrates through the second step portion and is provided with a pointed port, and the bottom end of the long needle body passes through the bottom of the installation column and forms an extension section for piercing the medicine protection cap; a protective sleeve is also included for protecting the long needle body, and a sealing piece is provided at the bottom of the sleeve for sealing the bottom of the sleeve.

[0006] Preferably, the sealing piece includes a sealing bottom plate and an extension plate connected to the sealing bottom plate in an L shape.

[0007] Preferably, a hot melt adhesive is provided on the upper surface of the sealing bottom plate for adhesively fixing with the bottom of the sleeve.

[0008] Preferably, the distance of the extension section where the long needle body is located is less than the bottom spacing after the sleeve and the installation column are assembled.

[0009] Preferably, the protective sleeve includes a cover sleeve, and the cover sleeve is formed by connecting a short sleeve and a straight sleeve, and the diameter of the short sleeve is larger than the diameter of the straight sleeve.

[0010] Preferably, two opposite slots are provided on the top edge where the first step portion is located, and two inserting blocks are arranged at the lower part of the inner wall of the short sleeve, and the inserting blocks are adapted to the slots.

[0011] Preferably, the lower part of the casing is provided with annularly distributed anti-slip grooves for easy handholding.

[0012] Preferably, the inner wall of the first step portion and the outer wall of the second step portion are both provided with a damping layer, and the first step portion and the second step portion can be assembled and fixed by the damping layer.

[0013] Preferably, a through hole is provided in the middle of the first step portion, and a damper is provided inside the through hole for the long needle to pass through and limit its height.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] The utility model comprises a needle body consisting of a mounting post, a sleeve shell and a long needle body, the mounting post and the sleeve shell can be fixedly assembled, at which time the long needle body where the mounting post is located can penetrate the top of the sleeve shell and be built into the protective sleeve, the threaded groove where the mounting post is located can be used to dock with the syringe needle tube, and the extension section formed at the bottom end of the long needle body can pierce the medicine protective cap where the syringe needle tube is located, the installation design of the threaded groove where the mounting post is located can quickly complete the syringe medicine assembly process, and at the same time cooperate with the piercing effect of the long needle body to realize automatic activation of the medicine, thereby greatly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the front view structure of

[0018] Figure 3 for Figure 2 AA cross-sectional structural diagram;

[0019] Figure 4 This is a schematic diagram of the disassembled structure of the utility model;

[0020] Figure 5 for Figure 4 BB cross-sectional structure diagram;

[0021] Figure 6 This is a schematic diagram of the installation column structure of the utility model;

[0022] Figure 7 This is a schematic diagram of the casing and sealing sheet structure of the utility model.

[0023] In the figure: 1. cover sleeve; 111. straight sleeve; 112. short sleeve; 113. plug-in block; 2. sleeve shell; 211. anti-slip groove; 213. slot; 214. first step portion; 216. through hole; 3. mounting column; 311. threaded groove; 312. second step portion; 4. long needle body; 411. pointed end port; 5. sealing sheet; 511. bottom plate; 512. extension plate. DETAILED DESCRIPTION

[0024] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] See also Figures 1 to 7 The utility model preferably provides a technical solution: a micro-puncture injection needle, comprising: a shell 2, and a mounting column 3 assembled with the shell 2, the mounting column 3 is placed inside the shell 2; a second step portion 312 is provided on the upper part of the mounting column 3, and a first step portion 214 is provided on the upper part of the shell 2, the first step portion 214 is adapted to the second step portion 312; a threaded groove 311 is provided at the lower part of the mounting column 3, for docking the syringe needle; and a long needle body 4 is placed in the middle part of the mounting column 3, the top end of the long needle body 4 passes through the second step portion 312 and is provided with a sharp end 411, and the bottom end of the long needle body 4 passes through the bottom of the mounting column 3 and forms an extension section for piercing the medicine protection cap; it also includes a protective sleeve for protecting the long needle body 4, and a sealing sheet 5 is provided at the bottom of the shell 2 for sealing the bottom of the shell 2.

[0026] In this application, as a micropuncture injection needle, the needle body is composed of a mounting column 3, a housing 2 and a long needle body 4, such as Figure 4 As shown in the structural disassembly diagram, the mounting column 3 and the casing 2 can be fixedly assembled, and the long needle body 4 where the mounting column 3 is located can pass through the top of the casing 2 and be built into the protective sleeve, as shown in FIG. Figure 3As shown, at this time, the pointed end 411 where the long needle body 4 is located is placed in the protective sleeve, and the bottom end of the long needle body 4 passes through the bottom of the mounting column 3 to form an extension section, and with the action of the sealing sheet 5, the bottom of the shell 2 can be sealed; specifically, when in use, the sealing sheet 5 at the bottom of the shell 2 is uncovered, and the syringe needle can be docked using the threaded groove 311 where the mounting column 3 is located, and the extension section formed at the bottom end of the long needle body 4 can pierce the medicine protective cap where the syringe needle is located, and the medicine is preferably insulin. This design, through the installation design of the threaded groove 311 where the mounting column 3 is located, can quickly complete the syringe medicine assembly process, and at the same time, with the piercing effect of the long needle body 4, the automatic activation of the medicine is realized, which greatly improves work efficiency.

[0027] Furthermore, the cover sheet 5 includes a bottom cover plate 511 and an extension plate 512 connected to the bottom cover plate 511 in an L-shape.

[0028] like Figure 1 , 2 As shown in FIG. 7 , the structure of the cover sheet 5 is that the bottom cover plate 511 can be applied to the bottom of the casing 2 by adhesion, and the extension plate 512 is an extension of the bottom cover plate 511 and can be used for hand-holding. When in use, it is convenient to tear off the bottom cover plate 511.

[0029] Furthermore, hot melt adhesive is provided on the upper surface of the bottom cover plate 511 for being adhered and fixed to the bottom of the casing 2 .

[0030] The hot melt adhesive provided on the bottom cover plate 511 can be heated to adhere the bottom cover plate 511 to the bottom of the casing 2 to form the bottom cover of the casing 2 .

[0031] Furthermore, the distance of the extended section where the long needle body 4 is located is smaller than the bottom distance between the housing 2 and the mounting column 3 after being assembled.

[0032] like Figure 3 As shown, the extended section of the long needle body 4 is arranged to be located at the bottom end of the mounting column 3 while not exceeding the bottom of the housing 2, thereby achieving the goal of not affecting the adhesion of the bottom plate 511 while satisfying the puncture of the solvent protective film.

[0033] Furthermore, the protective sleeve includes a cover sleeve 1 , which is formed by connecting a short sleeve 112 and a straight sleeve 111 , and a diameter of the short sleeve 112 is greater than a diameter of the straight sleeve 111 .

[0034] like Figure 3 and 5 As shown, the short sleeve 112 is connected to the straight sleeve 111, and the short sleeve 112 can be connected to the first step portion 214 where the sleeve shell 2 is located. By setting the length of the straight sleeve 111, the pointed end 411 where the long needle body 4 is located can be placed in the straight sleeve 111, thereby achieving the purpose of protecting the long needle body 4.

[0035] Further, two opposite slots 213 are provided at the top edge where the first stepped portion 214 is located, and two insertion blocks 113 are provided at the lower part of the inner wall of the short sleeve 112. The insertion blocks 113 are adapted to the slots 213.

[0036] As Figure 4 and 5 shown, under the combined action of the slots 213 and the insertion blocks 113, the insertion process of the cover sleeve 1 can be realized.

[0037] Further, an annularly distributed anti-slip pattern 211 is provided at the lower part of the housing 2 to facilitate hand-holding.

[0038] Further, damping layers are provided on the inner wall of the first stepped portion 214 and the outer wall of the second stepped portion 312. Through the action of the damping layers, the assembly and fixation of the first stepped portion 214 and the second stepped portion 312 can be realized.

[0039] Further, a through hole 216 is provided in the middle of the first stepped portion 214, and damping is provided inside the through hole 216 for the long needle body 4 to pass through and limit its height.

[0040] As Figure 5 shown, through the through hole 216 and the damping provided therein, the height of the long needle body 4 can be limited.

[0041] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated. There are various detachable installation methods. For example, it can be by the way of cooperation of insertion and snap, or by the way of bolt connection, etc.

[0042] The above embodiments' specific description of the present utility model is only for further explanation of the present utility model, and cannot be understood as a limitation of the protection scope of the present utility model. Those skilled in the art's non-essential improvements and adjustments made according to the content of the above utility model all fall within the protection scope of the present utility model.

Claims

1. A micropuncture injection needle, characterized in that: include: A casing (2), and a mounting post (3) assembled with the casing (2), wherein the mounting post (3) is placed inside the casing (2); The upper part of the mounting column (3) is provided with a second step portion (312), and the upper part of the casing (2) is provided with a first step portion (214), and the first step portion (214) is adapted to the second step portion (312); A threaded groove (311) provided at the lower part of the mounting column (3) and used for docking with a syringe needle tube; and a long needle body (4) disposed in the middle of the mounting column (3), the top end of the long needle body (4) passing through the second step portion (312) and provided with a pointed end (411), and the bottom end of the long needle body (4) passing through the bottom of the mounting column (3) and forming an extension section for piercing the medicine protective cap; It also comprises a protective sleeve for protecting the long needle body (4); a sealing sheet (5) is provided at the bottom of the sleeve (2) for sealing the bottom of the sleeve (2).

2. A micropuncture injection needle according to claim 1, characterized in that: The cover sheet (5) comprises a bottom cover plate (511) and an extension plate (512) connected to the bottom cover plate (511) in an L-shape.

3. A micropuncture injection needle according to claim 2, characterized in that: The upper surface of the bottom cover plate (511) is provided with hot melt adhesive for adhering and fixing to the bottom of the casing (2).

4. A micropuncture injection needle according to claim 1, characterized in that: The distance of the extended section where the long needle body (4) is located is smaller than the bottom distance after the sleeve shell (2) and the mounting column (3) are assembled.

5. The micropuncture injection needle according to claim 1, characterized in that: The protective sleeve comprises a cover sleeve (1), wherein the cover sleeve (1) is formed by connecting a short sleeve (112) and a straight sleeve (111), and the diameter of the short sleeve (112) is greater than the diameter of the straight sleeve (111).

6. A micropuncture injection needle according to claim 1, characterized in that: The top edge where the first step portion (214) is located is provided with two opposite slots (213), and two insert blocks (113) are arranged at the lower part of the inner wall of the short sleeve (112), and the insert blocks (113) are adapted to the slots (213).

7. The micropuncture injection needle according to claim 1, characterized in that: The lower part of the casing (2) is provided with anti-slip grooves (211) distributed in an annular pattern, so as to facilitate hand-holding.

8. The micropuncture injection needle according to claim 1, characterized in that: The inner wall of the first step portion (214) and the outer wall of the second step portion (312) are both provided with a damping layer, and the first step portion (214) and the second step portion (312) can be assembled and fixed by the damping layer.

9. The micropuncture injection needle according to claim 1, characterized in that: A through hole (216) is provided in the middle of the first step portion (214), and a damper is provided inside the through hole (216) for the long needle body (4) to pass through and limit its height.

Images