Peripheral blood taking needle structure

Abstract

The utility model discloses a tip blood taking needle structure which comprises a needle body, a needle handle and an inner package, one end of the needle body is fixed inside the needle handle, one end of the needle body penetrates into a center hole of the needle handle and then extends outwards, the needle body and the needle handle are of a split assembly type structure, and the inner package comprises medical gluing breathable paper and blister bubbles. The needle body and the needle handle form a tip blood taking needle, and the needle body and the needle handle are placed in a blister bubble and then sealed by medical gluing breathable paper. According to the tip blood taking needle structure, the defect that a tip blood taking needle is produced in a single mode of one-time injection molding for tens of years all the time is overcome, the needle body and the needle handle can be independently produced and manufactured separately and then assembled, injection molding of a cap is not needed in the needle tip protection mode, materials are fewer, the appearance is simpler, and cost is lower. And the assembly process is simpler and more convenient, the quantitative production is more efficient, and the input cost is lower.

Description

Technical Field

[0001] The utility model relates to the technical field of peripheral blood collection needles, in particular to a peripheral blood collection needle structure. Background Art

[0002] A peripheral blood collection needle is a simple blood collection needle, which is commonly used for collecting blood samples from distal parts such as fingers and earlobes. This patent discloses a new structure of a peripheral blood collection needle and its manufacturing method, which solves the problem that peripheral blood collection needles have been produced by a single injection molding method for decades, thereby making great progress in production efficiency, manufacturing cost, needle tip protection, environmental protection, and safe recycling of medical waste.

[0003] At present, all the peripheral blood collection needles on the market are composed of two parts: the needle handle and the needle body. The diameter of the needle handle is relatively thick, the material used is relatively large, and the shape is complex. It can only be formed in one step by the injection molding process. During production, the needle body needs to be placed in the injection mold, and then the molten plastic is squeezed into the mold cavity to wrap the needle body, and then it is cooled and demolded to complete the blood collection needle production process. Due to the discontinuous production process of this injection molding process and the slow production speed, in order to obtain higher production efficiency, a relatively large molding mold and a relatively large injection molding machine are required, and the injection molding machine must be automated and upgraded. The investment cost of the mold and the injection molding machine is high, and it needs to be repaired and maintained frequently.

[0004] In terms of needle tip contamination protection, the existing terminal blood collection needle uses a plastic cap connected to the needle handle to wrap the needle tip. When in use, the protective cap is unscrewed with both hands to expose the needle tip for use. After use, the protective cap cannot be put back on the needle tip, and the needle tip is always exposed, which can easily cause secondary pollution and damage to medical waste. Utility Model Content

[0005] The utility model aims to provide a distal blood collection needle structure to solve the problems of low manufacturing efficiency and high manufacturing cost in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a terminal blood collection needle structure, comprising a needle body, a needle handle, an inner packaging, a first needle insertion catheter and a second needle insertion catheter, one end of the needle body is fixed inside the needle handle, one end of the needle body penetrates into the center hole of the needle handle and extends outward, the needle body and the needle handle are split assembly structures, the inner packaging comprises medical glue-coated breathable paper and blister bubbles, the blister bubbles are arranged in the inner cavity of the inner packaging, the medical glue-coated breathable paper is movably connected to the blister bubbles, the needle body and the needle handle constitute a terminal blood collection needle, the needle body and the needle handle are placed inside the blister bubble, a handle inner hole matching the diameter of the needle body is arranged inside the needle handle, and one end of the needle body is inserted into and fixed to the handle inner hole of the needle handle in an assembly manner, a needle tip is arranged at one end of the needle body, and the first needle insertion catheter and the second needle insertion catheter are movably mounted on the outer surface of the needle handle.

[0007] As a preferred technical solution of the present utility model, the form of the needle handle is not limited to a plastic handle, but also includes a metal wire winding handle and a metal tube handle. The winding of the metal wire winding handle is as follows: the metal wire is cross-wound on the outer surface of one end of the needle tip from the end where the needle body is located to the front end. The metal tube handle includes a stainless steel tube handle, a copper tube handle and an aluminum tube handle. The stainless steel tube handle and the stainless steel wire flat handle can also be laser welded together at their tail ends to weld the needle handle and the needle body together.

[0008] As the preferred technical solution of the utility model, there are multiple welding methods for the needle handle and the needle body, including ultrasonic, laser, high-frequency eddy current heating and microwave heating. Ultrasonic wave is to melt the plastic of the plastic needle handle that the ultrasonic welding tool contacts so that it wraps the needle body to perform welding. Laser, high-frequency eddy current heating and microwave heating are all to heat the needle body and weld it to the needle handle.

[0009] Furthermore, there are multiple welding methods for the plastic needle handle and the needle body. Among them, ultrasonic welding is a method in which ultrasonic waves are transmitted to the plastic needle handle through an ultrasonic welding tool, causing the needle handle to partially melt and enter the center hole of the needle handle to wrap the needle body. After cooling and solidification, the needle handle and the needle body are connected. Other welding methods such as laser, high-frequency eddy current heating and microwave heating are performed by heating the needle body to weld to the needle handle.

[0010] Using the above technical solution, the metal wire winding handle includes a stainless steel wire flat handle, a stainless steel wire winding handle (with a nose), a copper wire winding handle (with a nose) and an aluminum wire winding handle (with a nose). The application scenarios of the various needle handles are different. The plastic handle and the metal handle have different shapes, feels, toughness and strength. Users can choose the corresponding needle handle for use according to actual needs. The threaded texture on the surface of the metal wire winding handle is anti-slip, which increases the friction with the fingers during operation.

[0011] As a preferred technical solution of the utility model, the laser welding method of the needle handle and the needle body includes the following steps:

[0012] S1, the laser beam penetrates the plastic needle handle to heat the needle body;

[0013] S2, the temperature is transmitted to the area where the inner wall of the plastic needle handle and the needle body are in contact, causing it to melt and wrap around the needle body;

[0014] S3. After cooling, weld the needle handle and the needle body together.

[0015] As a preferred technical solution of the utility model, the high-frequency eddy current heating welding method of the needle handle and the needle body includes the following steps:

[0016] S1. The needle body is heated by high-frequency eddy current to increase the overall temperature of the needle body;

[0017] S2, the temperature of the needle body is transferred to the inner wall of the plastic needle handle, so that the inner wall of the plastic needle handle melts under heating, and the melted plastic wraps the needle body;

[0018] S3, after the plastic wrapping the needle body cools down, the plastic needle handle and the needle body are bonded together;

[0019] S4. The principle of microwave heating welding is the same as that of high-frequency eddy current welding. Microwave is also an electromagnetic wave, but the wavelength of the electromagnetic wave is different from that of the high frequency.

[0020] By adopting the above technical scheme, in the above-mentioned multiple heating methods, the heating steps and principles are similar, that is, the needle body is heated, the heat is transferred to the fitting part of the needle body and the needle handle by utilizing the thermal conductivity of the metal, and the needle body and the needle handle are bonded together by hot melting.

[0021] As a preferred technical solution of the utility model, the plastic needle handle is manufactured by an extrusion process, and may also be manufactured by an injection molding process. The needle handle is cylindrical or prism-shaped, and is made of PP material, but is not limited to PP material.

[0022] By adopting the above technical solution, the plastic needle handle can be made by extrusion and injection molding, and both extrusion and injection molding are fully automatic processes. The extrusion process is more efficient. Compared with the injection molding process, the extrusion process is a continuous process, so the efficiency is several times that of the injection molding process.

[0023] As a preferred technical solution of the utility model, the blister bubble in the inner package is movably mounted with the needle body and the needle handle, and the length of the needle body and the needle handle is smaller than the length of the blister bubble in the inner package.

[0024] By adopting the above technical scheme, the blood collection needle is placed in a blister bubble for protection. When in use, the medical adhesive-coated breathable paper on the blister bubble is peeled off from one end to expose the needle handle, and the needle handle and the blood collection needle can be taken out and placed in a suitable traditional blood collection pen. After use, the blood collection needle is removed from the blood collection pen, and the blood collection needle can be put back into the blister bubble for protection and thrown into a garbage recycling bin to avoid secondary pollution and injury.

[0025] As a preferred technical solution of the utility model, the first needle insertion catheter and the second needle insertion catheter are both provided with braking protrusions inside, and the inner and outer surfaces of the first needle insertion catheter and the second needle insertion catheter are both cylindrical structures.

[0026] By adopting the above technical scheme, the length and inner wall width of the first needle insertion catheter and the second needle insertion catheter are the same. The only difference is that the first needle insertion catheter has an additional limiting protrusion compared with the second needle insertion catheter. The sum of the extended length of the braking protrusion and the diameter length of the needle handle is approximately equal to the inner diameter length of the tube wall of the first needle insertion catheter, which can act as a resistance to the needle handle. A friction force greater than that generated by the needle handle and the braking protrusion needs to be applied to make the needle handle slide vertically inside the first needle insertion catheter or the second needle insertion catheter. Among them, the first needle insertion catheter is suitable for all types of needle handles, while the second needle insertion catheter is limited to metal wire winding handles with a nose.

[0027] As a preferred technical solution of the utility model, a limiting protrusion is provided at one end of the inner surface of the first needle insertion catheter, the limiting protrusion is movably connected to the output end of the needle handle, the outer surface of the needle handle is movably connected to the braking protrusion, and the sum of the outer diameter length of the needle handle and the length of the braking protrusion is the same as the inner diameter length of the first needle insertion catheter or the second needle insertion catheter. The length of the limiting protrusion is greater than the length of the braking protrusion.

[0028] By adopting the above technical solution, a limiting protrusion is arranged at one end inside the first needle insertion catheter. During production and assembly, the direction of the needle tip needs to correspond to the direction of the braking protrusion. When the needle handle moves inside the first needle insertion catheter, the limiting protrusion can limit one end of the needle handle, thereby limiting the moving distance of the needle handle so that the needle tip can only be exposed at the front end of the first needle insertion catheter, thereby being able to accurately control the distance that the needle tip extends outward.

[0029] Furthermore, for a blood collection needle without a nose tip, the blood collection needle is placed in a plastic tube with an inner diameter that matches the diameter of the blood collection needle handle. The tail end of the blood collection needle protrudes from the plastic tube, and the needle tip is hidden in the plastic tube. The plastic tube is first heated and softened, and then two protrusions are made on the inner wall of the plastic tube using a mold. The protrusions just support the blood collection needle handle, and the blood collection needle is fixed by friction. A protrusion is also made at the lower end, and this protrusion can block the blood collection needle handle so that it cannot fall out from the lower end.

[0030] When using, pinch the plastic tube, press the plastic tube mouth close to the needle tip on the skin at the blood collection point, then tap the tail end of the blood collection needle with your index finger to make the blood collection needle move downward until the bulge at the lower end intercepts the blood collection needle. At this time, the needle tip is just exposed and pierces the skin at the blood collection point. Then lift the plastic tube, and the blood collection needle will be lifted up by the plastic tube at the same time. Then put the used needle tube and blood collection needle back into the blister bubble sealed by medical adhesive breathable paper for recycling. It has the following characteristics:

[0031] 1. The strength of the raised fixing needle handle is just right, which can just fix the blood collection needle without affecting the insertion of the blood collection needle;

[0032] 2. After the needle is inserted into place, the protrusion at the lower end intercepts the blood collection needle, and the tail end of the blood collection needle handle is just flush with the mouth of the plastic tube;

[0033] 3. The inner diameter of the plastic tube is slightly larger than the diameter of the needle handle, so there is no need to create a large bulge on the inner wall.

[0034] 4. The number of protrusions for fixing is not limited to 2, and the arrangement can be varied, such as distributing 3 protrusions along the circumference to clamp the needle handle in the center;

[0035] 5. Pressing the needle on the skin at the blood collection point can distract attention, paralyze the nerves and relieve pain;

[0036] 6. It does not need a protective cap like the traditional independent blood collection needle, which reduces the operation procedures.

[0037] Furthermore, similar to the above structure, the difference is that for the blood collection needle with a nose tip, due to the nose tip, the inner diameter of the tube can be made smaller than the size of the nose tip, so that when the blood collection needle is pressed, the nose tip can clamp the tube mouth, and the lower needle tip just exposes the appropriate length of the tube mouth, and the blood collection needle can be taken away at the same time when the plastic tube is taken away. Therefore, there is no need to make a protrusion for interception on the inner wall of the tube, only a protrusion for fixing the needle handle can be made, and it has the following characteristics:

[0038] 1. The inner diameter of the plastic tube is larger than the diameter of the needle handle and smaller than the outer diameter of the nose tip;

[0039] 2. The inner wall of the plastic tube only needs to be provided with a protrusion for fixing the needle handle;

[0040] 3. The rest of the structure is the same as the above structure.

[0041] Compared with the traditional independent blood collection needle, the structure is simple and easy to manufacture. The plastic tube can be made by extrusion molding process but is not limited to extrusion molding process.

[0042] Compared with the prior art, the utility model has the following beneficial effects: the distal blood collection needle structure:

[0043] 1. The existing blood collection needles are all formed in one piece by injection molding. Due to the influence of the mold, the length and thickness of the needle tip are subject to certain limitations. The needle body and the needle handle of the terminal blood collection needle of the utility model are processed independently and then assembled. The diameter and length of the needle body can be made thinner and shorter than the existing terminal blood collection needles, because the thinner and shorter blood collection needle can reduce pain and is more suitable for children to use;

[0044] 2. The needle handle can be made by extrusion technology. The extrusion process of producing the plastic handle is continuous and uninterrupted, with high production efficiency, saving materials and no waste. The material of the needle handle is not limited to PP material. The needle handle is made by extrusion technology, but not limited to this. It can also be realized by injection molding technology;

[0045] 3. The form of the needle handle is not limited to the plastic handle, but can also be a metal handle including various forms such as a metal wire handle and a metal tube handle. The plastic handle and the metal tube handle (or a stainless steel wire flat handle) can be assembled together by placing the needle body into the handle inner hole of the needle handle, and the two are fixedly connected by welding or other mechanical principles, instead of being completed by one-time injection molding like the traditional blood collection needle. There are various welding methods for the plastic needle handle and the needle body, including ultrasonic, laser, high-frequency eddy current heating, microwave heating, etc. The winding method of the metal wire handle with a nose is that after the nose is wound, the metal wire is cross-wound from the end to the front end on the outer surface of the needle body to form a metal wire handle with a nose;

[0046] 4. The utility model protects the needle tip of the blood collection needle through medical glue-coated breathable paper and blister bubble sealing packaging, which is always in a sterile state after sterilization. When using, you only need to tear open the medical glue-coated breathable paper and take out the blood collection needle, put it into a suitable blood collection pen, and after use, take the blood collection needle out of the blood collection pen and put it back into the original medical glue-coated breathable paper and blister packaging, and then put it into the medical waste recycling bin to avoid the needle tip being exposed and causing pollution and damage in the medical waste recycling process; while the needle tip of the traditional terminal blood collection needle is sealed by a protective cap made by injection molding in one step, and the protective cap must be unscrewed before use to expose the needle tip. After use, the needle tip is exposed, and if it is not handled properly during the waste recycling process, it is easy to cause pollution and damage;

[0047] 5. The manufacturing method of the blood collection needle of the utility model has higher production efficiency and more selection flexibility than the traditional one-step injection molding method because the needle body and the needle handle are manufactured independently and then assembled.

[0048] 6. By setting up the needle insertion catheter, when the blood is collected, the force of the raised fixing needle handle is just right, which can just fix the blood collection needle without affecting the insertion of the blood collection needle. It is not only convenient to operate, but also has a protective effect, avoiding the needle tip from piercing too deep and aggravating the pain, and further increasing the versatility of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 This is a schematic diagram of the three-dimensional structure of the inner packaging (plastic handle, metal tube handle) of a single blood collection needle of the utility model;

[0050] Figure 2 This is a schematic diagram of the three-dimensional structure of the inner packaging (stainless steel wire flat handle) of a single blood collection needle of the utility model;

[0051] Figure 3 This is a schematic diagram of the three-dimensional structure of the inner packaging (metal wire-wound handle with a nose) of a single blood collection needle of the utility model;

[0052] Figure 4 This is a schematic diagram of the three-dimensional structure of the inner packaging (plastic handle, metal tube handle) of a single blood collection needle of the first needle insertion catheter of the utility model;

[0053] Figure 5 It is a schematic diagram of the three-dimensional structure of the inner packaging (metal wire winding handle with nose) of a single blood collection needle of the second needle insertion catheter of the utility model;

[0054] Figure 6 This is a schematic diagram of the first needle insertion catheter of the utility model in an unused state of a blood collection needle (plastic handle, metal tube handle);

[0055] Figure 7 This is a schematic diagram of the blood collection needle (plastic handle, metal tube handle) of the first needle insertion catheter of the utility model after use;

[0056] Figure 8 This is a schematic diagram of the blood collection needle (stainless steel wire flat handle) of the first needle insertion catheter of the utility model in an unused state;

[0057] Fig. 9 This is a schematic diagram of the blood collection needle (stainless steel wire flat handle) of the first needle insertion catheter of the utility model after use;

[0058] Fig.10 It is a schematic diagram of the three-dimensional structure of the inner packaging (stainless steel wire flat handle) of a single blood collection needle inserted into the first needle insertion catheter of the utility model;

[0059] Fig.11 This is a schematic diagram of the blood collection needle (metal wire-wrapped handle with a nose tip) of the utility model for inserting the second needle catheter in an unused state;

[0060] Fig.12 This is a schematic diagram of the blood collection needle (metal wire-wound handle with a nose) of the second needle catheter of the utility model after use;

[0061] Fig.13 It is a schematic diagram of the front view structure of the winding wire-wound handle blood collection needle with a nose tip of the utility model;

[0062] Fig.14This is a schematic diagram of the laser welding structure of the stainless steel tube handle blood collection needle of the utility model;

[0063] Fig.15 This is a schematic diagram of the laser welding structure of the stainless steel wire flat handle blood collection needle of the utility model;

[0064] Fig.16 This is a schematic diagram of the laser welding structure of the stainless steel wire flat handle blood collection needle of the utility model;

[0065] Fig.17 This is a schematic diagram of the laser welding structure of the stainless steel tube handle blood collection needle of the utility model;

[0066] Fig.18 This is a schematic diagram of the laser welding structure of the plastic handle blood collection needle of the utility model;

[0067] Fig.19 This is a schematic diagram of the laser welding structure of the plastic handle blood collection needle of the utility model;

[0068] Fig. 20 This is a schematic diagram of the ultrasonic welding structure of the plastic-handled blood collection needle of the utility model;

[0069] Fig.21 This is a schematic diagram of the ultrasonic welding structure of the plastic handle blood collection needle of the utility model;

[0070] Fig. 22 This is a schematic diagram of the high-frequency eddy current welding structure of the plastic-handled blood collection needle of the utility model;

[0071] Fig.23 This is a schematic diagram of the microwave welding structure of the plastic-handled blood collection needle of the utility model;

[0072] Fig.24 This is a schematic diagram of the microwave welding and high-frequency welding structure of the plastic-handled blood collection needle of the utility model;

[0073] Fig.25 This is a schematic diagram of the mechanical punching connection structure of the metal tube handle blood collection needle of the utility model;

[0074] Fig.26 It is a schematic diagram of the bending and drawing connection structure of the plastic handle blood collection needle and the metal tube handle blood collection needle of the utility model;

[0075] Fig. 27 This is a schematic diagram of the bending and drawing connection structure of the stainless steel wire flat handle blood collection needle of the utility model;

[0076] Fig.28 The utility model is a schematic diagram of the manufacturing structure of the stainless steel wire flat handle.

[0077] In the figure: 1. needle body; 2. needle handle; 3. inner packaging; 4. inner hole of the handle; 5. needle tip; 6. medical adhesive-coated breathable paper; 7. blister bubble; 8. first needle insertion catheter; 9. second needle insertion catheter; 10. braking protrusion; 11. limiting protrusion. DETAILED DESCRIPTION

[0078] In order to further understand the content of the utility model, the utility model is described in detail with reference to the accompanying drawings.

[0079] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0080] In the description of the present invention, it should be understood that if the terms "upper", "lower", "top", "left", "right", "bottom", "inside", "outside", etc. are used to indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, and does 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.

[0081] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0082] In the description of this specification, the description with reference to the terms "embodiment", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0083] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

[0084]

[0085] Example 1

[0086] The distal blood collection needle of this embodiment is as shown in the attached Figure 1 and attached Fig.12 As shown, a needle body 1, a needle handle 2 and an inner packaging 3, one end of the needle body 1 is fixed inside the needle handle 2, one end of the needle body 1 penetrates into the center hole of the needle handle 2 and then extends outward, the needle body 1 and the needle handle 2 are a split assembly structure, the inner packaging 3 includes a medical glue-coated breathable paper 6 and a blister bubble 7, the blister bubble 7 is arranged in the inner cavity of the inner packaging 3, the medical glue-coated breathable paper 6 is movably fitted and connected to the blister bubble 7, the needle body 1 and the needle handle 2 constitute a peripheral blood collection needle, the needle body 1 and the needle handle 2 are placed inside the blister bubble 7, a handle inner hole 4 matching the diameter of the needle body 1 is arranged inside the needle handle 2, and one end of the needle body 1 is inserted and fixed into the handle inner hole 4 of the needle handle 2 in an assembly manner, and a needle tip 5 is arranged at one end of the needle body 1.

[0087] The peripheral blood collection needle of this embodiment is shown in the table: according to the different needle handles 2, there are two types of assembly connection methods for the needle body 1 and the needle handle 2, namely heating welding and mechanical principle connection. The plastic handle is connected by heating welding. There are many welding methods, including ultrasonic, laser, high-frequency eddy current heating and microwave heating. The stainless steel tube handle and the stainless steel wire flat handle are connected by laser welding and can also be connected by mechanical principles. Fig.25 Attached Fig. 27 As shown, the metal tube handle is connected by the mechanical principle of stamping or bending and drawing, the metal wire winding handle with a nose is mechanically wound by metal wire, the plastic needle handle 2 is produced by extrusion or injection molding, the needle handle material is PP plastic, but not limited to PP material, the plastic needle handle 2 is a cylindrical or prism-shaped structure with an axial through hole in the center, the inner hole 4 of the handle has a diameter of about 0.5 mm, and the shape of the needle tip 5 is the same as that of a traditional blood collection needle. Different from the traditional one, the length and thickness of the needle body 1 of the blood collection needle of this embodiment can be adjusted according to actual needs, and can be processed into different lengths and different thicknesses. Due to mold limitations, it is difficult to select a very short or very thin length of a traditional blood collection needle. Fig.13 and attached Fig.18As shown, the inner package 3 includes medical glue-coated breathable paper 6 and blister bubble 7, the prepared blood collection needle is placed in the inner package of the blister bubble 7 sealed by the medical glue-coated breathable paper 6, the distal blood collection needle in the inner package 3 is placed in the blister bubble sealed by the medical glue-coated breathable paper, and the blood collection needle is stuck and positioned in the package without moving, so that the needle tip is protected. When using, you only need to tear off the medical glue-coated breathable paper 6 from the needle handle 2 to expose the needle handle 2, then you can take out the blood collection needle and put it into a suitable traditional blood collection pen. After use, take the blood collection needle out of the blood collection pen and put it back into the original inner package of the medical glue-coated breathable paper 6 blister bubble 7, and then throw it into the medical waste recycling bin;

[0088] Among them, before assembly, the first needle insertion catheter 8 and the second needle insertion catheter 9 can be loaded into the corresponding needle insertion catheter according to the corresponding tube handles, such as the metal tube handle and the plastic handle are loaded inside the first needle insertion catheter 8, and the metal wire winding handle with a nose is loaded inside the second needle insertion catheter 9, and the loaded needle insertion catheter is placed inside the inner packaging 3. For the blood collection needle used with the traditional blood collection pen, a positioning block is arranged inside the blister bubble 7, which can limit the needle handle 2, not only can the needle handle 2 be positioned and installed, but also can avoid movement inside the blister bubble, thereby increasing the stability of the distal blood collection needle body during transportation. Different from this, when the needle insertion catheter and the blister bubble 7 are loaded, no positioning block is required;

[0089] How to use the first needle catheter 8: as shown in the instructions Figure 6-9 As shown, the corresponding needle handle 2 is loaded inside the first needle insertion catheter 8, and the end of the needle insertion catheter 8 close to the needle tip 5 is used to fit the skin at the blood collection point, and then the tail of the needle handle 2 is pressed to apply a friction force greater than that generated by the needle handle 2 and the braking protrusion 10, so that the needle handle 2 as a whole slides vertically inside the first needle insertion catheter 8. When the front end outer surface of the needle handle 2 fits the limiting protrusion 11 and pierces the skin inside the blood collection point, the needle handle 2 and the first needle insertion catheter 8 are then taken out, and the needle tip 5 is separated from the skin, and the blood collection work is completed.

[0090] The method of using the second needle catheter 9 is as shown in the attached manual. Fig.11 and 12 As shown, the method is the same as the above method, which is to make the needle handle 2 slide inside the second needle catheter 9 by pressing, and apply a friction force greater than that generated by the needle handle 2 and the braking protrusion 10. The difference is that the second needle catheter 9 is aimed at a metal wire winding handle with a nose. During the sliding process, the nose of the metal wire winding handle is stuck at the end of the second needle catheter 9, and the diameter of the nose of the metal wire winding handle is greater than the inner diameter of the second needle catheter 9, and a limiting structure is formed, and the skin at the blood collection point is pierced, and then the needle handle 2 and the first needle catheter 8 are taken out, so that the needle tip 5 is detached from the skin, and the blood collection work can be completed.

[0091] Example 2

[0092] The metal wire-wound handle distal blood collection needle with a nose is shown in the table: the needle handle 2 is a metal wire-wound handle, which is wound mechanically, such as Fig.13 As shown, the nose tip is first wound and then winding is started from the end of the needle body 1 toward one end of the needle tip 5 to form a metal wire wound handle distal blood collection needle with a nose tip; compared with the traditional one-time injection molding blood collection needle production process, the blood collection needle of this embodiment can be continuously produced without interruption, and there is no need for mold cooling time and injection return material during the injection molding process.

[0093] Example 3

[0094] Stainless steel wire flat handle wire handle distal blood collection needle, as attached Fig.28 As described, when winding the stainless steel wire flat handle, a steel wire is required as the winding mandrel. First, manually clamp the two sides of the mandrel with chucks, and the stainless steel wire passes through the small hole on the slider for wire winding. The end of the stainless steel wire that comes out is clamped with the chuck on the discharge side. The wire winding motor is turned on to make the two chucks rotate at the same time and drive the mandrel to rotate together, and the steel wire is wound on the mandrel. After winding a small section, the steel wire that was not wound well before is cut off, and then it is clamped with the chuck again, and the machine is restarted to enter the automatic operation state. The chuck continues to rotate, and the steel wire will be wound on the mandrel. At the same time, the force of the wire winding will push the slider to move in the opposite direction of the discharge side. After winding is full, the chuck on the discharge side automatically opens, and the traction motor pulls the wire winding handle on the mandrel outward for a section, then re-clamps the chuck, and starts the wire winding motor to continue winding. This cycle is repeated, and the wire winding handle pulled out on the discharge side is sent to the cutting device to cut it into a fixed length of the needle handle 2.

[0095] Example 4

[0096] The plastic handle distal blood collection needle is shown in the table: the basic structure is the same as that of Example 1, except that the needle handle 2 and the needle body 1 are welded by laser welding. The plastic handle is laser welded in this embodiment. Figure 14-20 As shown, the laser beam is focused by the laser welding gun, passes through the plastic of the needle handle 2, and irradiates the needle body 1, so that the temperature of the needle body 1 increases, and the temperature is transmitted to the inner wall of the plastic tube handle 2 in contact with the needle body 1. When the temperature reaches the melting point of the material of the plastic tube handle 2, the plastic in contact with the needle body 1 melts and wraps the needle body 1. After cooling, it solidifies and connects the needle body 1 and the plastic tube handle 2 together. Compared with the traditional one-time injection molded blood collection needle, the welding of the blood collection needle in this embodiment can be continuously and efficiently produced automatically with lower cost.

[0097] Example 5

[0098] The plastic handle distal end blood collection needle of this embodiment is as shown in the attached Fig. 20 and 21As shown: the basic structure is the same as that of Example 1, and ultrasonic welding is adopted for welding the plastic handle. The tip of the ultrasonic welding head contacts the plastic tube handle 2, and ultrasonic vibration is sent to the surface of the plastic tube handle 2, so that the plastic molecules in contact with the welding head of the plastic tube handle 2 follow the vibration of the welding head, and internal friction is generated between the molecules, and the temperature rises accordingly. When the temperature reaches the melting point of the material of the plastic tube handle 2, the material in contact with the welding head melts, and as the welding head further penetrates the plastic tube handle 2, the molten plastic is also sent into the handle inner hole 4 of the plastic tube handle 2, and wraps the needle body placed in the handle inner hole 4. After the welding head is pulled out, the plastic naturally cools and solidifies, so that the needle body 1 and the plastic tube handle 2 are connected together.

[0099] Example 6

[0100] The plastic handle distal blood collection needle of this embodiment is as shown in the table: the basic structure is the same as that of embodiment 1, and the welding method of the plastic handle adopts high-frequency eddy current welding, as shown in the attached Fig. 22 and 24 As shown, the needle body 1 is inserted into the needle handle 2, which is then placed in a high-frequency electromagnetic field. Due to the principle of electromagnetic induction, a continuous eddy current will be induced in the stainless steel wire needle body 1. Since the needle body 1 itself has a certain resistance, a certain amount of heat will be generated when the eddy current flows through, causing the temperature of the needle body 1 to rise. When the temperature reaches the melting point of the plastic of the plastic tube handle 2, the inner wall of the plastic tube handle 2 in contact with the needle body 1 will melt, and the molten plastic will wrap the needle body 1. After cooling and solidifying, the needle body 1 and the plastic tube handle 2 will be fixedly connected together.

[0101] Example 7

[0102] The plastic handle distal blood collection needle of this embodiment adopts microwave welding for welding the plastic handle. The principle is the same as high-frequency eddy current welding. Microwave is also an electromagnetic wave, but the wavelength of electromagnetic wave is different from high frequency. Microwave magnetron generates microwave and transmits microwave energy to the needle body 1, the needle handle 2 and the inner wall heating area through the waveguide. Fig.23 and 24 As shown, the needle body 1 and the inner wall of the needle handle 2 are welded together by microwave heating.

[0103] Example 8

[0104] The distal blood collection needle of this embodiment (plastic handle and metal tube handle) is as shown in the attached Fig.25 , 26 As shown in Figure 27, the metal tube handle or plastic handle needle body 1 is inserted into the handle inner hole 4 and the central through hole is partially reduced by stamping, thereby forming an interference fit connection and fixation between the central through hole of the needle handle 2 and the needle body 1, or the needle body 1 is pressed and bent into a wave form, and the needle body 1 is inserted and pulled into the needle handle 2, so that the wave crest of the wave bend is pressed against the inner wall of the central through hole of the needle handle 2 in the handle inner hole 4, and the friction between the inner wall and the needle body 1 and the needle handle 2 are fixed together.

[0105] The above schematically describes the present invention and its implementation methods, which is not restrictive. The attached drawings are only one of the implementation methods of the present invention, and the actual structure and manufacturing steps are not limited thereto. Therefore, if ordinary technicians in this field are inspired by it, without departing from the purpose of the invention of the present invention, they can design a structure and implementation method similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A peripheral blood collection needle structure, characterized in that: The invention comprises a needle body (1), a needle handle (2), an inner package (3), a first needle insertion catheter (8) and a second needle insertion catheter (9), wherein one end of the needle body (1) is fixed inside the needle handle (2), one end of the needle body (1) penetrates into the central hole of the needle handle (2) and then extends outward, the needle body (1) and the needle handle (2) are of a split assembly structure, the inner package (3) comprises a medical adhesive-coated breathable paper (6) and a blister bubble (7), the blister bubble (7) is arranged in the inner cavity of the inner package (3), the medical adhesive-coated breathable paper (6) is movably attached to the inner cavity of the inner package (3), and the medical adhesive-coated breathable paper (6) is movably attached to the inner cavity of the inner package (3). The invention relates to a blister bubble (7), wherein the needle body (1) and the needle handle (2) constitute a terminal blood collection needle, wherein the needle body (1) and the needle handle (2) are placed inside the blister bubble (7), wherein the needle handle (2) is provided with a handle inner hole (4) matching the diameter of the needle body (1), and one end of the needle body (1) is inserted into and fixed in the handle inner hole (4) of the needle handle (2) in an assembled manner, wherein a needle tip (5) is provided at one end of the needle body (1), and the first needle insertion catheter (8) and the second needle insertion catheter (9) are movably mounted on the outer surface of the needle handle (2).

2. A peripheral blood collection needle structure according to claim 1, characterized in that: The needle handle (2) is not limited to a plastic handle, but also includes a metal wire-wound handle and a metal tube handle. The metal wire-wound handle with a nose is wound as follows: the metal wire is cross-wound around the outer surface of one end of the needle tip (5) from the end where the needle body (1) is located to the front end. The metal tube handle includes a stainless steel tube handle, a copper tube handle and an aluminum tube handle. The stainless steel tube handle and the stainless steel wire flat handle can also be laser welded together at their tail ends to weld the needle handle (2) and the needle body (1) together.

3. A peripheral blood collection needle structure according to claim 2, characterized in that: There are multiple ways to weld the needle handle (2) and the needle body (1), including ultrasonic, laser, high-frequency eddy current heating and microwave heating. Ultrasonic is to use an ultrasonic welding tool to melt the plastic of the plastic needle handle (2) that the welding tool contacts so that it wraps around the needle body (1) to perform welding. Laser, high-frequency eddy current heating and microwave heating are all to heat the needle body (1) and perform welding with the needle handle (2).

4. A peripheral blood collection needle structure according to claim 1, characterized in that: The needle handle (2) is manufactured by using an extrusion molding process and an injection molding process. The needle handle (2) is in a cylindrical or prism-shaped structure, and the needle handle (2) is made of PP material, but is not limited to PP material.

5. The peripheral blood collection needle structure according to claim 1, characterized in that: The blister bubble (7) in the inner package (3) is movably mounted on the assembled needle body (1) and needle handle (2); the length of the needle body (1) and needle handle (2) is shorter than the length of the blister bubble (7) in the inner package (3).

6. A peripheral blood collection needle structure according to claim 1, characterized in that: The first needle insertion catheter (8) and the second needle insertion catheter (9) are both provided with a braking protrusion (10) inside, and the inner and outer surfaces of the first needle insertion catheter (8) and the second needle insertion catheter (9) are both cylindrical structures.

7. A peripheral blood collection needle structure according to claim 1, characterized in that: A limiting protrusion (11) is provided at one end of the inner surface of the first needle insertion catheter (8), and the limiting protrusion (11) is movably connected to the output end of the needle handle (2). The outer surface of the needle handle (2) is movably connected to the braking protrusion (10). The sum of the outer diameter length of the needle handle (2) and the length of the braking protrusion (10) is the same as the inner diameter length of the first needle insertion catheter (8) or the second needle insertion catheter (9), and the length of the limiting protrusion (11) is greater than the length of the braking protrusion (10).

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