Medical contact pin assembling jig
By designing a medical needle assembly fixture, which utilizes magnetic blocks to provide attraction and buffer stroke, the problem of low efficiency, time-consuming and labor-intensive manual assembly in existing technologies is solved, realizing automated assembly, improving production efficiency and reducing defect rate.
Patent Information
- Application Number
- CN202520547217.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-03-26
AI Technical Summary
In the existing technology, the assembly of plastic syringes and metal needles relies on manual operation, resulting in low production efficiency, time and labor costs and high defect rates, especially the assembly of insulin syringes, which is particularly difficult.
A medical needle assembly fixture was designed, comprising a base, a slide, a syringe slide, and a needle positioning assembly. It utilizes a magnetic block to provide attraction and buffer stroke, and achieves automated assembly through the corresponding setting of the needle placement channel and the syringe contour groove.
It has enabled the automated assembly of medical needles, saving labor, improving production efficiency, reducing defect rates, and increasing production capacity.
Smart Images

Figure CN223618293U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of assembly fixtures, and in particular relates to a medical needle assembly fixture. Background Technology
[0002] Products using plastic tubing to assemble metal needles include syringes, blood collection needles, drainage needles, and insulin injectors. These products consist of interconnected plastic tubing and metal needles. Currently, the assembly of these tubing and needles is done manually, requiring manual handling of a 0.3mm fine needle and manual insertion and removal of the tubing. This manual assembly method is inefficient. In particular, one type of insulin injector requires the plastic tubing to be fitted with a long needle and a short needle at a predetermined radial angle, a time-consuming and labor-intensive operation resulting in a high product defect rate. Utility Model Content
[0003] In view of this, the present invention aims to provide a medical needle assembly fixture, which is suitable for the assembly of manual needles and syringes, making the needle insertion into the syringe convenient, saving time and effort, reducing labor costs, and improving efficiency; by setting the needle placement channel corresponding to the syringe contour groove, the defect rate is reduced.
[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:
[0005] A medical needle assembly fixture includes a base, a slide, a syringe slide, and a needle positioning assembly. The base has a straight slide with limiting blocks at both ends along its length. A syringe slide and the needle positioning assembly are mounted on the slide between the two limiting blocks. The syringe slide has a syringe-shaped groove for placing a syringe. The bottom of the syringe slide is slidably fitted onto the slide and can reciprocate along the slide. The needle positioning assembly includes a fixing block and a magnet. The fixing block is fixedly connected to the slide and has a magnet. A needle placement channel for placing a needle is provided between the magnet and the fixing block, and the needle placement channel is horizontally positioned along the length of the slide. The needle placement channel corresponds to the syringe-shaped groove.
[0006] Furthermore, the magnet block covers the fixing block, and the magnet block and the fixing block are detachably connected.
[0007] Furthermore, the needle placement channel includes a needle groove and a limiting hole, the needle groove is formed on the fixing block, and the limiting hole is formed at the front end of the needle groove.
[0008] Furthermore, the magnet block is provided with an observation hole that extends through the limiting hole.
[0009] Furthermore, the fixing block is provided with a positioning pin and a positioning post, and the fixing block is fixed on the slide by the positioning pin; the magnet block is provided with a positioning groove that cooperates with the positioning post.
[0010] Furthermore, grooves are provided on opposite sides of the slide, and slide plates are provided on opposite sides of the bottom of the syringe slide, with the slide plates fitted into the grooves.
[0011] Furthermore, the base is fixed to the workbench with screws.
[0012] Compared with the prior art, the medical needle assembly of this utility model has the following advantages:
[0013] The medical needle assembly fixture of this utility model achieves needle placement channel limiting of the needle through base, slide, syringe slide and needle positioning component, magnetic block generates attraction of needle and provides buffer stroke; manually push syringe slide to push syringe to needle positioning component to complete assembly. Using medical needle assembly fixture can save labor, reduce cost, increase efficiency, reduce defect rate and increase production capacity. Attached Figure Description
[0014] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:
[0015] Figure 1 This is a schematic diagram of the medical needle assembly fixture described in an embodiment of the present invention;
[0016] Figure 2 This is a side view of the medical needle assembly fixture described in an embodiment of the present invention.
[0017] Figure 3 This is a schematic diagram of the fixing block and its connection structure according to an embodiment of the present utility model.
[0018] Explanation of reference numerals in the attached figures:
[0019] 1-Base; 2-Slide rail; 3-Syringe slide; 4-Syringe contour groove; 5-Fixing block; 6-Magnet block; 7-Limiting block; 8-Syringe; 9-Observation hole; 10-Slide plate; 11-Slide groove; 12-Needle groove; 13-Limiting hole; 14-Positioning pin; 15-Positioning post; 16-Screw. Detailed Implementation
[0020] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0022] like Figure 1As shown, a medical needle assembly fixture includes a base 1, a slide 2, a syringe slide 3, and a needle positioning assembly. The base 1 is provided with the slide 2, which is a straight slide. Limiting blocks 7 are respectively provided at both ends of the slide 2 along its length. The syringe slide 3 and the needle positioning assembly are provided on the slide 2 between the two limiting blocks 7. The syringe slide 3 has a syringe contour groove 4 for placing a syringe 8. The bottom of the syringe slide 3 is slidably fitted onto the slide 2, and the syringe slide 3 can reciprocate along the slide 2. The needle positioning assembly includes a fixing block 5 and a magnet block 6. The fixing block 5 is fixedly connected to the slide 2, and the magnet block 6 is provided on the fixing block 5. A needle placement channel for placing a needle is provided between the magnet block 6 and the fixing block 5. The needle placement channel is horizontally arranged along the length of the slide 2. The needle placement channel is correspondingly arranged with the syringe contour groove 4.
[0023] In use, place the syringe 8 into the syringe contour groove 4 of the syringe slide 3; open the magnet block 6, place the needle into the needle placement channel of the needle positioning assembly, cover the fixing block 5 with the magnet block 6, limit the needle through the needle placement channel, and generate an attraction force on the needle through the magnet block to provide a buffer stroke during assembly; then manually push the syringe slide 3 to push the syringe 8 to the needle positioning assembly, insert the rear end of the needle into the syringe, and complete the assembly.
[0024] like Figure 3 As shown, the magnet 6 covers the fixing block 5, and the magnet 6 and the fixing block 5 are detachably connected. The needle placement channel includes a needle groove 12 and a limiting hole 13. The needle groove 12 is formed on the fixing block 5, and the limiting hole 13 is formed at the front end of the needle groove 12. When the needle is placed into the needle groove 12, the needle tip abuts against the side wall of the limiting hole 13, making the needle positioning more accurate and facilitating placement.
[0025] like Figure 1 As shown, the magnet block 6 has an observation hole 9 that extends through the limiting hole 13. When the syringe is pushed to the needle positioning assembly for assembly, the tip of the needle can be seen through the observation hole 9, making it easy to understand the internal situation.
[0026] like Figure 3 As shown, the fixing block 5 is provided with a positioning pin 14 and a positioning post 15. The fixing block 5 is fixed to the slide rail 2 by the positioning pin 14. The magnet block 6 is provided with a positioning groove that cooperates with the positioning post 15. The positioning pins are respectively set on both sides of the fixing block 5, so that the fixing is more secure. The positioning post 15 is inserted into the positioning groove, so that the magnet block 6 and the fixing block 5 form a detachable connection, which is convenient to put in and take out and the positioning is more accurate.
[0027] like Figure 2As shown, slide grooves 11 are provided on opposite sides of the slide 2, and slide plates 10 are provided on opposite sides of the bottom of the syringe slide, with the slide plates 10 fitting into the slide grooves 11. When the syringe slide is pushed by hand, the slide plates 10 of the syringe slide move along the slide grooves 11, pushing the syringe to the needle positioning assembly for assembly.
[0028] This utility model discloses a medical needle assembly fixture. A syringe slide holds the syringe, and the needle positioning component and needle placement channel provide attraction and limit for the needle. A magnetic block generates attraction for the needle and provides a buffer stroke during assembly. This makes the needle insertion into the syringe convenient, saves time and effort, reduces labor costs, and improves efficiency. The needle placement channel is set to correspond with the syringe contour groove to reduce the defect rate.
[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A medical needle assembly fixture, characterized in that: The device includes a base (1), a slide (2), a syringe slide (3), and a needle positioning assembly. The base (1) is provided with a slide (2), which is a straight slide. Limiting blocks (7) are provided at both ends of the slide (2) along its length. The slide (2) between the two limiting blocks (7) is provided with a syringe slide (3) and a needle positioning assembly. The syringe slide (3) has a syringe contour groove (4) for placing a syringe (8). The bottom of the syringe slide (3) is slidably fitted onto the slide (2), and the syringe slide (3) can move back and forth along the slide (2). The needle positioning assembly includes a fixing block (5) and a magnet block (6). The fixing block (5) is fixedly connected to the slide (2). The fixing block (5) is provided with a magnet block (6). A needle placement channel for placing a needle is provided between the magnet block (6) and the fixing block (5). The needle placement channel is horizontally arranged along the length of the slide (2). The needle placement channel is correspondingly arranged with the syringe contour groove (4).
2. The medical needle assembly fixture according to claim 1, characterized in that: The magnet block (6) covers the fixing block (5), and the magnet block (6) and the fixing block (5) are detachably connected.
3. The medical needle assembly fixture according to claim 2, characterized in that: The needle placement channel includes a needle groove (12) and a limiting hole (13). The needle groove (12) is opened on the fixing block (5), and the limiting hole (13) is opened at the front end of the needle groove (12).
4. The medical needle assembly fixture according to claim 3, characterized in that: An observation hole (9) is provided on the magnet block (6), and the observation hole (9) extends through the limiting hole (13).
5. The medical needle assembly fixture according to claim 2, characterized in that: The fixing block (5) is provided with a positioning pin (14) and a positioning post (15). The fixing block (5) is fixed on the slide (2) by the positioning pin (14). The magnet block (6) is provided with a positioning groove that cooperates with the positioning post (15).
6. The medical needle assembly fixture according to claim 1, characterized in that: The slide (2) has grooves (11) on both sides, and the syringe slide is provided with slide plates (10) on both sides at the bottom. The slide plates (10) are fitted into the grooves (11).
7. The medical needle assembly fixture according to claim 1, characterized in that: The base (1) is fixed to the workbench by screws (16).