Plastic handle acupuncture tubular needle with needle inlet tube

Abstract

The utility model discloses a plastic handle acupuncture tubular needle with a needle inlet tube, and belongs to the field of medical instruments. The plastic handle acupuncture tubular needle with the needle inlet tube comprises the plastic handle acupuncture needle and the needle inlet plastic catheter, the plastic handle is welded and fixed in the needle inlet tube through the high-temperature welding head tip, a welding point is generated at the welding position, and the plastic materials, which are relatively easy to position and melt, of the needle inlet tube and the plastic handle are fully utilized; a protruding part does not need to be formed on the peripheral face of the plastic handle in advance, welding points are generated at the welding position through the high-temperature welding head tip end, the welding points are bonded firstly and then solidified to fixedly connect the needle inlet pipe and the plastic handle, the connection strength is proper, and use is convenient. The medical plastic handle acupuncture needle solves the problems that the connection firmness of a plastic handle and a needle inlet tube of the medical plastic handle acupuncture needle is not uniform, an inserting piece is used for fixing, and the assembling cost is high when other injection molding modes are adopted.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to an acupuncture needle with a plastic handle and an insertion needle tube. Background Art

[0002] Acupuncture needles used in traditional Chinese medicine are micro medical devices. The needle handle of this type of acupuncture needle with a needle insertion tube is fixed to the inner side of the needle insertion tube in a state where a part of the needle handle protrudes from the open end of the needle insertion tube. It must be ensured that it does not fall off during production and packaging and transportation, and it must also be easily removed from the needle insertion tube when used for acupuncture treatment. Therefore, the firmness of the connection between the needle insertion tube and the needle handle has always restricted safe operations in the industry. If it is too tight, it is not easy to remove, and if it is too loose, it is easy to fall off. In the existing solutions, a wedge-shaped sheet (insert) is generally inserted into the gap between the needle handle and the needle insertion tube to fix the two. Because both hands are required for use, the insert must be taken out first, and then the needle is inserted into the acupuncture point through the catheter. This insert will become redundant garbage. Moreover, this fixed insert sometimes falls off or loosens during transportation. Therefore, this fixing method has many defects and shortcomings. Another fixing method is to bond the needle handle and the needle insertion tube through ultraviolet light dispensing and curing. Although it can be operated with one hand using the lever principle using the glue fixing point as a fulcrum, the disadvantage is that the process is cumbersome and the connection strength is uneven, and special glue is required, which increases the production cost.

[0003] After searching, it was found that the patent application with application number 200480044247.8, published on September 26, 2007, disclosed a method for fixing an acupuncture needle and a needle tube, which is a method for fixing an acupuncture needle with a metal needle handle in a resin needle tube, using high-frequency induction heating or microwave heating to melt the resin at the part where the surface of the needle handle of the acupuncture needle contacts the inner side of the needle tube and fix the two. At this time, by forming a concave-convex part such as a protrusion on the metal needle handle, the fixing strength of the acupuncture needle and the needle tube can be changed. This application uses high-frequency induction heating or microwave heating, and the needle handle must be a metal needle handle, which is not applicable to the currently more common plastic handle.

[0004] Patent Document 1: Japanese Patent Application Laid-Open No. 8-10310;

[0005] Patent document 2: Japanese Patent Publication No. 9-28758;

[0006] In the fixing method using ultrasonic welding described in the above two patent documents, when the needle handle and the needle tube are formed of the same resin, the means to solve the problem is to pre-form a convex portion on a part of the outer peripheral surface of the resin needle handle molded on the base end side of the needle handle, and put the same resin needle tube as the needle handle on the needle handle, so that the outer end of the needle handle protrudes from the needle tube, and the convex portion of the needle handle is located in the needle tube. The convex portion of the needle handle and the inner peripheral surface of the needle tube in contact therewith are ultrasonically welded. This document requires the pre-formation of a convex portion 2a on the outer peripheral surface of the resin needle handle, and then ultrasonic welding is performed. The welding force is greatly affected by the shape and size of the convex portion 2a, and it is easy to connect too tightly and make it difficult to remove. If the convex portion 2a is to be pre-formed on the outer peripheral surface of the needle handle, then the assembly method of this plastic handle acupuncture needle can only be completed by one-time molding by injection molding, and the plastic handle acupuncture needle produced by extrusion molding cannot be used, and the application scenario is limited. Utility Model Content

[0007] 1. Technical problems to be solved by the utility model

[0008] In view of the uneven connection firmness of the plastic handle and the needle insertion tube of the prior art Chinese medical plastic handle acupuncture needles and the need to use an insert to fix them, as well as other deficiencies, the utility model provides an acupuncture tube needle with a plastic handle and a needle insertion tube, which does not require pre-forming a convex portion on the outer circumference of the plastic handle. The needle insertion tube and the plastic handle are fixedly connected by a welding point generated by the high-temperature welding head tip at the welding point, which first adheres and then solidifies, and the connection strength is just right.

[0009] 2. Technical solution

[0010] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is:

[0011] A plastic-handled acupuncture needle with a needle insertion tube comprises a plastic-handled acupuncture needle and a needle insertion tube. The plastic-handled acupuncture needle comprises a plastic handle and a needle body fixed in the plastic handle. The plastic handle is welded and fixed in the needle insertion tube by a high-temperature welding head tip, and a welding point is generated at the welding point, making full use of the relatively easy-to-position molten plastic material of the needle insertion tube itself, without the need to pre-form a convex portion on the outer peripheral surface of the plastic handle. The welding point is generated at the welding point by the high-temperature welding head tip, and the welding point is first adhered and then solidified to fix the needle insertion tube and the plastic handle. The connection strength is just right, which is not easy to fall off during packaging and transportation, and when the needle is used for medical purposes, the welding point is used as a fixed fulcrum, and it is easy to remove the plastic handle by one-handed operation using the lever principle. The manufacturing method of the plastic handle and the needle insertion tube is not limited to extrusion molding or injection molding, and has a wide range of applications.

[0012] According to a further technical solution, the front port of the needle insertion tube protrudes from the front end of the needle body, and the rear end of the plastic handle protrudes from the rear port of the needle insertion tube, so that the plastic handle can be removed conveniently by using the welding point as a fulcrum and utilizing the lever principle.

[0013] A further technical solution is that the welding point is formed when the wall of the needle tube collapses or is squeezed due to local high temperature. The welding point can be generated by selecting the corresponding welding head tip temperature according to the melting point of the corresponding plastic material of the needle tube and heating the local wall of the needle tube.

[0014] According to a further technical solution, the welding points are generated by ultrasonic heating, electric heating, microwave heating or friction heating welding, and the corresponding heating method can be selected according to different plastics and pipe wall thicknesses to reduce the corresponding production cost.

[0015] A further technical solution is that there is only one welding point, which is simple to manufacture and labor-saving to operate.

[0016] A further technical solution is that a small welding hole is generated on the tube wall of the plastic handle at the welding point. The small welding hole is generated after the tip of the welding head is pulled out, which serves as a guide and positioning point when the plastic-handled acupuncture needle is removed, thereby avoiding deviation in the force direction when the plastic-handled acupuncture needle is removed.

[0017] An assembly method of the above-mentioned plastic-handled acupuncture needle with an insert needle tube comprises the following steps:

[0018] S1. Insert the plastic-handled acupuncture needle into the needle tube, with the tail of the plastic handle protruding from the tube opening of the needle tube;

[0019] S2, the tip of the high-temperature welding head is radially inserted into the corresponding part of the needle tube where the plastic handle is located, and the needle tube material at the corresponding part is melted at high temperature. The molten material is radially pressed into the needle tube by the tip of the welding head to adhere the plastic handle;

[0020] S3. After the tip of the welding head is pulled out, a radial welding hole is formed by the needle tube.

[0021] A further assembly method, in step S2, the high-temperature welding tool is an ultrasonic welding tool, and the ultrasonic wave is transmitted to the tip of the welding head, generating ultrasonic vibration at the tip, and when the tip contacts the outer wall of the needle tube, the temperature rises and reaches the melting point of the plastic, and then the plastic melts. The welding head tip further pierces the tube wall and contacts the plastic handle, causing the plastic handle to melt slightly locally. Part of the melted material of the needle tube enters the needle tube to bond the plastic handle and the needle tube, and after the welding head tip is pulled out, it cools and solidifies to fix the plastic handle and the needle tube together.

[0022] 3. Beneficial effects

[0023] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0024] (1) The utility model is an acupuncture needle with a plastic handle and a needle insert tube. The needle insert tube and the plastic handle are relatively easy to position the molten plastic material. There is no need to pre-form a convex portion on the outer peripheral surface of the plastic handle. The welding point generated by the high-temperature welding head tip at the welding point is first adhered and then solidified to fix the needle insert tube and the plastic handle. The connection strength is just right and the operation is simple.

[0025] (2) The utility model is an acupuncture needle with a plastic handle and a needle insertion tube. The manufacturing method of the plastic handle and the needle insertion tube is not limited to extrusion molding or injection molding, and has a wide range of applications;

[0026] (3) The utility model provides an acupuncture needle with a plastic handle and a needle tube, which has a low manufacturing cost and can be welded without introducing other welding materials, thus saving materials and being environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of a plastic-handled acupuncture needle with an insertion needle tube according to a specific embodiment;

[0028] Figure 2 A three-dimensional diagram of an acupuncture needle with a plastic handle and a needle tube according to a specific embodiment;

[0029] Figure 3 for Figure 2 The main view;

[0030] Figure 4 for Figure 3 Side view of

[0031] Figure 5 for Figure 3 Schematic diagram of the structure after the B part is enlarged;

[0032] Figure 6 It is a schematic diagram of processing a plastic-handled acupuncture needle with an inserted needle tube using an ultrasonic welding tool in a specific embodiment.

[0033] In the figure: 1-needle body; 2-plastic handle; 5-ultrasonic welding tool; 10-plastic handle acupuncture needle; 11-tail; 12-concave; 21-molding hole; 22-convex; 30-needle inlet tube; 31-welding microhole; 32-welding point; 51-transducer; 52-connecting cable; 53-amplifier; 54-lifting platform; 55-ultrasonic welding head; 56-welding head tip. DETAILED DESCRIPTION

[0034] In order to further understand the content of the utility model, the utility model is described in detail with reference to the accompanying drawings.

[0035] Example 1

[0036] The plastic handle acupuncture needle with a needle tube of this embodiment is as follows: Figures 1 to 5As shown, it includes a plastic-handled acupuncture needle 10 and a needle insertion tube 30. The plastic-handled acupuncture needle 10 includes a plastic handle 2 and a needle body 1 fixed in the plastic handle 2. The plastic handle 2 is welded and fixed in the needle insertion tube 30 by a high-temperature welding head tip, and a welding point 32 is generated at the welding position.

[0037] The acupuncture needle with a plastic handle and a needle insertion tube of the present embodiment makes full use of the relatively easy-to-position molten plastic material of the needle insertion tube 30 itself, and there is no need to pre-form a convex portion on the outer peripheral surface of the plastic handle 2. The welding point 32 is generated at the welding point by the high-temperature welding head tip. The welding point 32 is first adhered and then solidified to fix the needle insertion tube 30 and the plastic handle 2 together. The connection strength is just right, which not only ensures that the needle is not easy to fall off during packaging and transportation, but also achieves the purpose of using the welding fixed point as a fulcrum when the needle is used for medical purposes, and the plastic handle 2 can be easily removed by using the lever principle. The manufacturing method of the plastic handle 2 and the needle insertion tube 30 is not limited to extrusion or injection molding, and has a wide range of applications.

[0038] Example 2

[0039] The plastic handle acupuncture needle with a needle insertion tube in this embodiment has the same basic structure as that in embodiment 1, except that the front end of the needle insertion tube 30 protrudes from the front end of the needle body 1, and the rear end of the plastic handle 2 protrudes from the rear end of the needle insertion tube 30, so that the plastic handle 2 can be removed conveniently by using the welding point 32 as a fulcrum and the lever principle. The welding point 32 is formed when the wall of the needle insertion tube 30 collapses or is squeezed by local high temperature. The welding point 32 can be generated by heating the local wall of the needle insertion tube 30 by selecting the corresponding welding head tip temperature according to the melting point of the corresponding plastic material of the needle insertion tube 30. For example, an ultrasonic welding tool 5, such as Figure 6As shown, it includes a transducer 51, a horn 53 and an ultrasonic welding head 55 connected in sequence. The horn 53 passes through the lifting platform 54 and is looped on the lifting platform 54. The transducer 51 is externally connected to an ultrasonic generator through a connecting cable 52. The bottom working end of the ultrasonic welding head 55 is a welding head tip 56. The working principle of the ultrasonic welding tool 5 is: ultrasonic waves are transmitted to the welding head tip 56, and ultrasonic vibrations are generated at the tip. When the tip contacts the outer wall of the needle tube 30, the plastic molecules in contact with the needle tip vibrate with the needle tip, causing friction between molecules. Heat is generated, and the plastic melts after the temperature reaches the melting point. The tip of the mold head further penetrates the tube wall and contacts the plastic handle 2 placed in the needle tube 30, causing it to melt slightly locally. The melted material of the needle tube 30 enters the needle tube 30 to bond the needle tube 30 and the plastic handle 2 together. After the lifting platform 54 rises and the welding head tip 56 is pulled out, the molten plastic cools and solidifies to fix the needle tube 30 and the plastic handle 2 together; the firmness of the fixing of the needle tube 30 and the plastic handle 2 can be adjusted by the power of the ultrasonic wave and the thickness of the welding head tip. Other welding methods that can deliver energy to the welding part can also be used, such as electric heating of the welding head tip to penetrate the tube wall, high-frequency heating of the welding head tip, microwave heating, friction heating, etc. The corresponding heating method can be selected according to different plastics and tube wall thicknesses to reduce the corresponding production cost.

[0040] The assembly method of the plastic-handled acupuncture needle with an insert needle tube of this embodiment comprises the following steps:

[0041] S1, insert the plastic handle acupuncture needle 10 into the needle insertion tube 30, and the tail of the plastic handle 2 protrudes from the tube opening of the needle insertion tube 30;

[0042] S2. The high-temperature welding head tip is radially inserted into the corresponding part of the needle tube 30 where the plastic handle 2 is located. The plastic handle material at the corresponding part melts at high temperature to form a welding point 32. The molten material at the welding point 32 is radially pressed into the needle tube 30 by the welding head tip to adhere the needle tube 30 and the plastic handle 2.

[0043] S3, after the tip of the welding head is pulled out, the molten material cools down, and the needle tube 30 forms a radial welding hole 31. After the molten material solidifies, the needle tube 30 and the plastic handle 2 are fixedly connected together.

[0044] When the high temperature welding tool is an ultrasonic welding tool 5, as Figure 6 As shown, in step S2, the high-temperature welding tool is an ultrasonic welding tool 5, and the ultrasonic wave is transmitted to the welding head tip 56, generating ultrasonic vibration at the tip, and when the welding head tip contacts the outer wall of the needle insertion tube 30, the temperature rises to reach the melting point of the plastic and melts, and the welding head tip 56 further pierces the tube wall and contacts the plastic handle 2 to melt the plastic handle 2 locally, and part of the melted material of the needle insertion tube 30 enters the needle insertion tube 30 to bond the plastic handle 2 and the needle insertion tube 30, and after the welding head tip 56 is pulled out, it cools and solidifies to fix the plastic handle 2 and the needle insertion tube 30 together.

[0045] When the high temperature welding tool is an electric heating welding tool, in step S2, after the tip of the welding head is heated to the melting point of the needle tube 30, the tip of the welding head is radially inserted, and other actions are not repeated.

[0046] When high-frequency heating, friction heating or other high-temperature welding is selected, the processing steps used when using electric heating welding tools will not be repeated.

[0047] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure and manufacturing steps are not limited thereto. Therefore, if a person skilled in the art is inspired by it and, without departing from the purpose of the invention, designs a structure and an implementation method similar to the technical solution without creativity, they should all fall within the protection scope of the present invention.

Claims

1. A plastic-handled acupuncture needle with a needle insertion tube, comprising a plastic-handled acupuncture needle (10) and a needle insertion tube (30), characterized in that: The plastic handle acupuncture needle (10) comprises a plastic handle (2) and a needle body (1) fixed in the plastic handle (2); the plastic handle (2) is welded and fixed in the needle insertion tube (30) by a high-temperature welding head tip, and a welding point (32) is generated at the welding point; The front end of the needle insertion tube (30) protrudes from the front end of the needle body (1), and the rear end of the plastic handle (2) protrudes from the rear end of the needle insertion tube (30).

2. The acupuncture needle with plastic handle and needle tube according to claim 1, characterized in that: The welding point (32) is formed when the wall of the needle insertion tube (30) collapses or is squeezed due to local high temperature.

3. The acupuncture needle with plastic handle and needle tube according to claim 2, characterized in that: The welding points (32) are generated by ultrasonic heating, electric heating, microwave heating or friction heating welding.

4. The acupuncture needle with plastic handle and needle tube according to claim 2, characterized in that: The number of the welding point (32) is one.

5. The acupuncture needle with plastic handle and needle tube according to claim 2, characterized in that: A small welding hole (31) is formed on the wall of the needle inlet tube (30) at a welding point (32).

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