Vein blood taking needle assembling tool

Abstract

The utility model discloses a venous blood taking needle assembling tool which is used in the technical field of medical instrument production equipment. The tool comprises an upper die, a blowing insert and a lower die which are sequentially stacked in a detachable manner, the upper die is provided with a plurality of positioning through holes used for installing fins of vein blood taking needles. The blowing insert is provided with a blowing through groove, a plurality of positioning through holes are formed in an air outlet path of the blowing through groove, and the blowing through groove is communicated with the positioning through holes; a plurality of air inlet holes are formed in the lower die, are aligned to the positioning through hole and are communicated with the blowing through groove. The tool is assembled in a detachable mode, accessories of each part can be independently cleaned, the narrow and long structure of the blowing through groove enables silicification liquid to have enough space to disperse and flow after the silicification liquid flows in, blocking is not prone to occurring, cleaning of the blowing through groove is simpler and more convenient compared with a plurality of blowing holes, and the cleaning efficiency is improved. The problem that the interior of a traditional venous blood taking needle assembling tool is difficult to clean is practically solved.

Description

Technical Field

[0001] This utility model relates to the field of medical device manufacturing equipment technology, and in particular to a tooling for assembling intravenous blood collection needles. Background Technology

[0002] The venous blood collection needle assembly fixture serves as a positioning carrier for the assembly process of the wing, needle tube, and sheath of the venous blood collection needle. The wing, needle tube, and sheath are assembled, glued, immersed in silicone oil, and cleaned by air blowing on the venous blood collection needle assembly fixture to realize the production of venous blood collection needles. However, the traditional venous blood collection needle assembly fixture has a technical pain point of difficult internal cleaning, which is mainly reflected in two aspects. On the one hand, the traditional fixture is a one-piece design and cannot be disassembled, making it difficult to clean the inside of the fixture. On the other hand, the traditional fixture assembles multiple needles together, and each needle tube has an air blowing hole at the bottom for cleaning the needle tube. During the assembly process, silicone liquid can easily flow into the air blowing hole, causing blockage in multiple air blowing holes. Cleaning multiple blocked air blowing holes is difficult and tedious. Utility Model Content

[0003] This invention provides a tooling for assembling venous blood collection needles, aiming to solve the technical problem of difficult cleaning in the prior art.

[0004] This utility model provides a venous blood collection needle assembly tooling, including an upper mold, an air-blowing insert and a lower mold arranged in a detachable manner and stacked sequentially;

[0005] The upper mold is provided with multiple positioning through holes for mounting the wing pieces of the venous blood collection needle;

[0006] The air-blowing insert is provided with an air-blowing through groove, and a plurality of positioning through holes are provided on the air outlet path of the air-blowing through groove, and the air-blowing through groove connects the plurality of positioning through holes.

[0007] The lower mold is provided with multiple air inlets, which are aligned with different positioning through holes, and the air inlets are connected to the air blowing through groove.

[0008] In one embodiment, the upper mold is provided with a through slot, and multiple vertical slots are provided on the inner walls of the opposite sides of the through slot. The two vertical slots on the opposite sides of the through slot enclose each other to form the positioning through hole.

[0009] In one embodiment, the plurality of positioning through holes are evenly arranged at a preset interval, the preset interval being greater than or equal to the maximum diameter of the venous blood collection needle.

[0010] In one embodiment, along the direction from the lower mold to the upper mold, the positioning through hole includes a positioning narrow hole section and a positioning wide hole section, a positioning step is formed between the positioning narrow hole section and the positioning wide hole section, the positioning wide hole section matches the shape of the winglet, and the positioning step is used to abut against the winglet.

[0011] In one embodiment, the air-blowing through groove is provided with multiple partitions, which divide the air-blowing through groove into multiple air-blowing channels with independent airflow.

[0012] In one embodiment, the width of the air-blowing through groove is 0.5mm-0.6mm.

[0013] In one embodiment, along the direction from the lower mold to the upper mold, the air inlet includes a wide-diameter air inlet section and a narrow-diameter air inlet section arranged sequentially, with an inclined transition surface formed between the wide-diameter air inlet section and the narrow-diameter air inlet section.

[0014] In one embodiment, the top of the lower mold is provided with a first mounting groove, the first mounting groove is shaped to match the air-blowing insert, the air-blowing insert is embedded in the first mounting groove, and the first mounting groove is provided with a plurality of air inlets.

[0015] In one embodiment, the top of the lower mold is provided with a mounting wall, and at least two mounting walls are arranged on opposite sides of the lower mold, the two mounting walls enclosing each other to form a second mounting groove, and the upper mold is inserted into the second mounting groove.

[0016] In one embodiment, the upper mold has a first threaded hole, the lower mold has a second threaded hole, and the detachable connection between the upper mold and the lower mold is configured to be screwed into the first threaded hole and the second threaded hole.

[0017] As can be seen from the above technical solutions, this utility model has the following advantages:

[0018] This embodiment provides a venous blood collection needle assembly fixture. Since the upper mold, the air-blowing insert, and the lower mold are stacked sequentially in a detachable manner, the entire venous blood collection needle assembly fixture is detachable, allowing for individual cleaning of each component. Furthermore, since the air-blowing insert has an air-blowing groove below the positioning through hole of the upper mold, replacing the traditional air-blowing hole at the bottom of the needle tube, the elongated structure of the air-blowing groove allows sufficient space for the siliconized liquid to disperse and flow after inflow, preventing clogging. Moreover, cleaning the air-blowing groove is simpler and more convenient than cleaning multiple air-blowing holes, effectively solving the problem of difficult internal cleaning in traditional venous blood collection needle assembly fixtures. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 An exploded view of the overall structure of a venous blood collection needle assembly tool provided in this embodiment of the utility model;

[0021] Figure 2 This utility model provides an application diagram of a venous blood collection needle assembly fixture during the assembly of venous blood collection needles.

[0022] Figure 3 A side view schematic diagram of a venous blood collection needle assembly fixture provided for an embodiment of this utility model;

[0023] Figure 4 A cross-sectional schematic diagram of a venous blood collection needle assembly tool provided for an embodiment of this utility model;

[0024] Figure 5 This is a schematic diagram of the upper mold provided in an embodiment of the present utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the air-blowing insert provided in an embodiment of the present utility model;

[0026] Figure 7 This is a schematic diagram of the lower mold provided in an embodiment of the present utility model.

[0027] Figure label:

[0028] 1. Upper mold; 10. Positioning through hole; 100. Positioning narrow hole section; 101. Positioning wide hole section; 102. Positioning step; 103. Vertical groove; 11. Through slot; 12. First threaded hole; 2. Air blowing insert; 20. Air blowing through groove; 200. Divider; 201. Air blowing channel; 3. Lower mold; 30. Air inlet; 300. Air inlet wide diameter hole section; 301. Air inlet narrow diameter hole section; 31. Second threaded hole; 32. First mounting groove; 33. Second mounting groove; 4. Screw; 5. Wing; 6. Needle tube; 7. Sheath. Detailed Implementation

[0029] This utility model provides a venous blood collection needle assembly tool to solve the technical problem of difficult cleaning of venous blood collection needle assembly tools in the prior art.

[0030] To make the utility model's objectives, features, and advantages more apparent and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0031] Please see Figures 1 to 7 The present invention provides a venous blood collection needle assembly tooling, comprising an upper mold 1, an air-blowing insert 2 and a lower mold 3 arranged in a detachable manner and stacked sequentially.

[0032] The upper mold 1 is provided with multiple positioning through holes 10 for mounting the wing 5 of the venous blood collection needle;

[0033] The air-blowing insert 2 is provided with an air-blowing through groove 20, and multiple positioning through holes 10 are provided on the air outlet path of the air-blowing through groove 20. The air-blowing through groove 20 connects to the multiple positioning through holes 10.

[0034] The lower mold 3 is provided with multiple air inlets 30, which are aligned with different positioning through holes 10. The air inlets 30 are connected to the air blowing through groove 20.

[0035] In the operation of this embodiment, the wing 5 of the venous blood collection needle is positioned and installed in the positioning through hole 10. The wing 5 and the needle tube 6 are fixed with glue. Then, the needle tube 6 is soaked in silicone oil. Compressed air is blown into the needle tube 6 of the venous blood collection needle through the air inlet 30, the air blowing through groove 20, and the positioning through hole 10 to clean the inner wall of the needle tube 6. The sheath 7 is loaded and assembled onto the needle tube 6 to complete the assembly of the venous blood collection needle.

[0036] Compared with the prior art, the advantages of this embodiment are as follows: First, since the venous blood collection needle assembly fixture is assembled by stacking the upper mold 1, the air-blowing insert 2, and the lower mold 3 in a detachable manner, each part of the venous blood collection needle assembly fixture can be disassembled and cleaned individually, avoiding the problem of difficult internal cleaning caused by the traditional fixture's one-piece design which cannot be disassembled; Second, since the air-blowing insert 2 has an air-blowing through groove 20, which replaces the original traditional air-blowing hole at the bottom of the needle tube 6, the elongated structure of the air-blowing through groove 20 allows sufficient space for the siliconized liquid to disperse and flow after flowing in, making it less prone to clogging. Cleaning the air-blowing through groove 20 is simpler and more convenient than multiple air-blowing holes; Third, it is low-cost. Traditional fixtures are one-piece designs, and if a vulnerable part is damaged, the whole fixture must be discarded, resulting in high usage costs. Compared with traditional fixtures, this embodiment allows for the individual replacement of a certain part, reducing costs.

[0037] In a specific embodiment, such as Figure 1 and Figure 4 As shown, a feasible structural method for positioning through hole 10 is provided. Along the direction from lower mold 3 to upper mold 1, positioning through hole 10 includes positioning narrow hole section 100 and positioning wide hole section 101 connected in sequence. Positioning step 102 is formed between positioning narrow hole section 100 and positioning wide hole section 101. Positioning wide hole section 101 matches the shape of wing 5. Positioning step 102 is used to abut wing 5. In specific implementation, wing 5 is inserted into positioning wide hole section 101 and abuts against positioning step 102. Positioning narrow hole section 100 can be used for air flow to achieve the cleaning purpose of subsequent needle tube 6.

[0038] In one embodiment, such as Figure 1 , Figure 4 and Figure 5 As shown, in order to increase the utilization of space, multiple positioning through holes 10 are evenly arranged at a preset interval. The preset interval is greater than or equal to the maximum diameter of the venous blood collection needle. In specific implementation, multiple venous blood collection needles are simultaneously positioned and assembled in multiple positioning through holes 10. Adjacent venous blood collection needles will not interfere with each other and can maximize the utilization of space.

[0039] The number of positioning through holes 10 can be 34, that is, one tooling can simultaneously position and assemble 34 venous blood collection needles. Of course, other numbers of positioning through holes 10 can be selected by those skilled in the art according to actual needs.

[0040] In one embodiment, such as Figure 1 and Figure 4 As shown, in order to clean the outer surface of the venous blood collection needle, the upper mold 1 is provided with a through slot 11. The inner wall of the through slot 11 is provided with a plurality of vertical slots 103. Two vertical slots 103 on opposite sides of the through slot 11 enclose to form a positioning through hole 10. That is, two vertical slots 103 on the thickness line of the through slot 11 enclose to form a positioning through hole 10. In specific implementation, the wing 5 is installed in the vertical slot, that is, in the positioning through hole 10. Two adjacent positioning through holes 10 are directly connected. Gas can flow out from the gap between the positioning through hole 10 and the air blowing through slot 20 and blow air to clean the outer wall of the venous blood collection needle.

[0041] It should be noted that, in addition to the above-described embodiment, the positioning through hole 10 can also be a positioning through hole 10 that is 200 apart from each other. However, the positioning through hole 10 that is 200 apart from each other generally has a poor cleaning effect on the outer surface of the venous blood collection needle. Those skilled in the art can choose according to the actual situation.

[0042] In a specific embodiment, such as Figure 6As shown, an achievable structure for the air-blowing through groove 20 is provided. The air-blowing through groove 20 is provided with multiple partitions 200, which divide the air-blowing through groove 200 into multiple air-blowing channels 201 with independent airflow. In specific implementation, when gas is blown into the air-blowing through groove 20, it will flow into different air-blowing channels 201 respectively. The airflow flowing through any air-blowing channel 201 is confined inside the air-blowing channel 201. Due to the obstruction effect of the partitions 200, there is no airflow path between adjacent air-blowing channels 201, forming a fluid diversion effect, reducing the mutual movement and interference between gases, so that the airflow can flow stably and independently towards the positioning through hole 10.

[0043] In one embodiment, the width of the air-blowing through groove 20 is 0.5mm-0.6mm. For example, the width of the air-blowing through groove 20 can be 0.5mm, 0.55mm, or 0.6mm. With this width, on the one hand, it can ensure that enough gas is blown into the needle tube 6, and on the other hand, it can effectively avoid the accumulation of foreign objects and blockage, so as to improve the assembly quality of the venous blood collection needle and solve the problem of easy blockage of the 0.4mm air-blowing hole in the prior art.

[0044] In one embodiment, the air-blowing insert 2 is made of a corrosion-resistant material, which includes at least stainless steel, ceramics, glass, etc. After the air-blowing insert 2 is made of a corrosion-resistant material, the service life of the air-blowing insert 2 is longer and it can be replaced individually, reducing the cost of use.

[0045] In a specific embodiment, such as Figure 4 and Figure 7 As shown, an achievable structure for the air inlet 30 is provided. Along the direction from the lower mold 3 to the upper mold 1, the air inlet 30 includes a wide-diameter air inlet section and a narrow-diameter air inlet section arranged sequentially. An inclined transition surface is formed between the wide-diameter air inlet section and the narrow-diameter air inlet section. The shape of the blowing head of the blowing device matches that of the wide-diameter air inlet section, that is, the shape and size of the blowing head are the same as those of the wide-diameter air inlet section. In specific implementation, the blowing head of the blowing device blows out compressed gas. When the compressed gas enters the narrow-diameter air inlet section from the wide-diameter air inlet section along the inclined transition surface, the gas flow rate will increase due to the smaller cross-section, thereby improving the cleaning effect of the needle tube 6.

[0046] In one embodiment, such as Figure 4 As shown, the end of the wide-diameter intake port section away from the narrow-diameter intake port section has a chamfer, which makes the installation process smoother.

[0047] In a specific embodiment, such as Figure 1 and Figure 4As shown, an assembly structure for the air-blowing insert 2 and the lower mold 3 is further provided. The top of the lower mold 3 is provided with a first mounting groove 32, which matches the shape of the air-blowing insert 2. That is, the shape and size of the first mounting groove 32 are the same as those of the air-blowing insert 2. The air-blowing insert 2 is embedded in the first mounting groove 32, which is provided with multiple air inlets 30. In specific implementation, the embedded air-blowing insert 2 structure avoids the possibility of the periphery of the air-blowing insert 2 contacting the outside world, making the connection of the air-blowing insert 2 more stable.

[0048] It should be noted that there can be multiple first mounting slots 32, which are arranged linearly and evenly. There are also multiple air-blowing inserts 2. Each air-blowing insert 2 in the first mounting slot 32 covers and aligns with multiple positioning through holes 10. The number of corresponding positioning through holes 10 and air inlets 30 can also be increased. For example, one first mounting slot 32 has 8-10 positioning through holes 10. As the number of first mounting slots 32 increases, the number of venous blood collection needles that can be assembled by the venous blood collection needle assembly tooling at each time will also increase, effectively improving the efficiency of the production line.

[0049] In a specific embodiment, such as Figure 1 and Figure 4 As shown, an assembly structure for the upper mold 1 and the lower mold 3 is further provided. The top of the lower mold 3 is provided with a mounting wall, and at least two mounting walls are arranged on opposite sides of the lower mold 3. The two mounting walls enclose to form a second mounting groove 33. The upper mold 1 is inserted into the second mounting groove 33. In specific implementation, the bottom of the upper mold 1 will be embedded in the second mounting groove 33 and abut against the air-blowing insert 2, thereby forming a structure in which the upper mold 1 and the lower mold 3 clamp the air-blowing insert 2, which can improve the structural stability.

[0050] In a specific embodiment, such as Figure 1 As shown, a detachable connection method for the upper mold 1 and the lower mold 3 is further provided. The lower mold 3 is provided with multiple sets of second threaded holes 31, and the upper mold 1 is provided with multiple sets of first threaded holes 12. The detachable connection between the upper mold 1 and the lower mold 3 is configured by screwing the upper mold 1 and the lower mold 3 into the first threaded holes 12 and the second threaded holes 31. In specific implementation, after the upper mold 1, the air-blowing insert 2 and the lower mold 3 are stacked, the user aligns the screw 4 with the first threaded holes 12 and the second threaded holes 31, and uses the screw 4 to connect the upper mold 1 and the lower mold 3. The air-blowing insert 2 is clamped and fixed under the action of the upper mold 1 and the lower mold 3.

[0051] In this embodiment, as Figure 1 As shown, the upper mold 1 has multiple first mounting slots 32 at its top four corners and between its two ends. The first mounting slots 32 have first threaded holes 12. The screws 4 pass through the first threaded holes 12 and connect to the second threaded holes 31 of the lower mold 3.

[0052] In this embodiment, as Figure 1As shown, the surface of the lower mold 3 is provided with a second threaded hole 31 corresponding to the projection position of the first threaded hole 12, so that the upper mold 1 and the lower mold 3 can be connected and installed together.

[0053] Based on the above embodiments, the venous blood collection needle assembly tooling of this application reduces the defect rate from the original 0.5% to below 0.01% in actual production, and reduces the use and maintenance costs by 79%, which has good application and promotion value.

[0054] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0055] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

[0056] Finally, it should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A tooling for assembling intravenous blood collection needles, characterized in that, The upper mold, the blowing insert and the lower mold are arranged in sequence in a detachable manner; The upper mold is provided with a plurality of positioning through holes for installing the wings of the venous blood sampling needle; The blowing insert is provided with a blowing through groove, and a plurality of positioning through holes are arranged on the air outlet path of the blowing through groove. The blowing through groove communicates with the plurality of positioning through holes. The lower mold is provided with a plurality of air inlet holes, and the plurality of air inlet holes are aligned with different positioning through holes. The air inlet holes are in communication with the blowing through groove.

2. The lancet assembly tool of claim 1, wherein, A through slot is arranged on the upper mold. A plurality of vertical slots are arranged on the inner walls of the opposite sides of the through slot. Two vertical slots on the opposite sides of the through slot form the positioning through hole.

3. The lancet assembly tool of claim 1 wherein, The plurality of positioning through holes are arranged uniformly at a preset interval, and the preset interval is greater than or equal to the maximum diameter of the venous blood sampling needle.

4. The lancet assembly tool of any one of claims 1 to 3, wherein, In the direction from the lower mold to the upper mold, the positioning through hole includes a positioning narrow hole section and a positioning wide hole section. A positioning step is formed between the positioning narrow hole section and the positioning wide hole section. The positioning wide hole section is matched with the shape of the wing. The positioning step is used for abutting the wing.

5. The lancet assembly tool of claim 1 wherein, A plurality of partitions are arranged in the blowing through groove. The plurality of partitions separate the blowing through groove into a plurality of blowing channels with independent air flows.

6. The lancet assembly tool of claim 1 or 5, wherein, The width of the blowing through groove is 0.5mm-0.6mm.

7. The lancet assembly tool of claim 1 wherein, In the direction from the lower mold to the upper mold, the air inlet hole includes an air inlet wide diameter hole section and an air inlet narrow diameter hole section arranged in sequence. An inclined transition surface is formed between the air inlet wide diameter hole section and the air inlet narrow diameter hole section.

8. The lancet assembly tool of claim 1 wherein, The top of the lower mold is provided with a first mounting groove. The first mounting groove is matched with the shape of the blowing insert. The blowing insert is embedded in the first mounting groove. A plurality of air inlet holes are arranged in the first mounting groove.

9. The lancet assembly tool of claim 8 wherein, The top of the lower mold is provided with a mounting wall. At least two mounting walls are arranged on the opposite sides of the lower mold. Two mounting walls form a second mounting groove. The upper mold is inserted into the second mounting groove.

10. The lancet assembly tool of claim 1 wherein, The upper mold is provided with a first threaded hole, and the lower mold is provided with a second threaded hole. The detachable connection of the upper mold and the lower mold is configured to be screwed into the first threaded hole and the second threaded hole.

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