Plastic handle acupuncture needle and fixing structure of needle body and plastic pipe handle of plastic handle acupuncture needle

Abstract

The utility model discloses a plastic handle acupuncture needle and a fixing structure of a needle body and a plastic pipe handle of the plastic handle acupuncture needle, and belongs to the field of medical instruments. According to the fixing structure of the needle body and the plastic pipe handle of the acupuncture needle with the plastic handle, the needle body comprises the fixed section and the free section which are connected into a whole, the needle body is generally made of a medical stainless steel wire, part or the whole section of the fixed section is in interference fit with the pipe hole of the plastic pipe handle, the interference part of the fixed section is embedded into the inner wall of the pipe hole of the plastic pipe handle, and the fixed section and the plastic pipe handle are fixedly connected in an embedded mode and are firmly connected. And the needle body cannot be dislocated. Good heating and heat conduction performance of the stainless steel needle body is fully utilized, the needle body fixing section is firmly connected with the plastic pipe handle on the basis that the appearance integrity of the plastic pipe handle is not damaged, various heating modes can be achieved, and the application range is wide. The technical problem that a plastic pipe handle and a needle body of an existing technological plastic handle acupuncture needle are connected in a dispensing mode, and firmness is insufficient is solved.

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 a fixing structure of the needle body and the plastic tube handle. Background Art

[0002] At present, acupuncture needles used in traditional Chinese medicine are miniature medical devices, with a needle body diameter as small as 0.10mm and a needle handle of about 2mm. Therefore, the firmness of the connection between the needle body and the needle handle of acupuncture needles with plastic handles has always restricted the safe operation of the industry. The conventional method is to bend the end of the needle body, and use strong force to pull the bent part of the needle body into the needle handle, so that the needle body is fixed in the needle handle to achieve a certain firmness index. Although the needle body is inserted into the needle handle, because the inner diameter of the needle handle is larger than the diameter of the needle body, there is a gap and a notch at its end, and there is a lack of effective connection between the needle body and the needle handle, which poses many safety hazards. Moreover, since the thinner needle body is not strong enough after being bent and inserted, this method can only be used for thicker needle bodies, and in order to ensure firmness, the thicker needle body is bent more, resulting in some bending of the plastic handle after insertion, and problems such as tilting of the needle body.

[0003] In response to the above problems, there are currently two types of plastic-handled acupuncture needles on the market, one is an extruded handle and glue-dispensed plastic handle acupuncture needle, and the other is an injection-molded handle and one-time molded plastic handle acupuncture needle. Most of the acupuncture needles on the market use extruded handle and glue-dispensed plastic handle acupuncture needles.

[0004] The applicant of this application has also submitted a patent application with patent number 2019105858651, which was published on September 24, 2019. The needle body and the needle handle are assembled and connected by dispensing ultraviolet light-curing glue. Since this ultraviolet light-curing glue needs to have a certain viscosity, its fluidity is limited. There are uneven problems in the amount of glue dispensed from the plastic tube handle and the depth of glue penetration into the plastic tube handle, which leads to uneven firmness of the needle body inside after the glue is cured. At the same time, the dispensing itself will also cause the glue to overflow on the outside of the plastic tube handle and cause pollution. It is often found that the glue is not cured and dried thoroughly, and there is adhesion between the plastic tube handles during the production process. Moreover, this ultraviolet light glue is usually more expensive. At the same time, for injection-molded plastic-handle acupuncture needles manufactured by one-step injection molding, although the firmness and uniformity of the plastic handle and needle body have been greatly improved, due to the high equipment investment cost and low production efficiency, the current market demand cannot be fully expanded and is very limited. Utility Model Content

[0005] 1. Technical problems to be solved by the utility model

[0006] In view of the firmness quality problems and other deficiencies of plastic-handled acupuncture needles in the prior art that fix the plastic tube handle and the needle body by glue dispensing, the utility model provides a plastic-handled acupuncture needle and a fixing structure of the needle body and the plastic tube handle, which achieves the purpose of firmly fixing the needle body and the plastic tube handle by interference fitting the fixing section of the needle body with the tube hole of the plastic tube handle and embedding the interference portion into the inner wall of the tube hole.

[0007] 2. Technical solution

[0008] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is:

[0009] A fixing structure for a plastic-handled acupuncture needle body and a plastic tube handle, the needle body comprising a fixed section and a free section connected in one piece, the needle body is generally made of medical stainless steel wire, part or all of the fixed section is interference fit with the tube hole of the plastic tube handle, the interference part of the fixed section is embedded in the inner wall of the tube hole of the plastic tube handle, the embedded fixed connection is firm, and the needle body will not be dislocated.

[0010] A further technical solution is that the fixed section is a wavy section or a serrated section, and the wave crest or tooth crest part is embedded in the inner wall of the tube hole of the plastic tube handle. The wavy section or the serrated section will produce elasticity, easily fit with the tube hole, and even embed into the inner wall of the tube hole, so that a firm connection is easy to achieve.

[0011] A further technical solution is that the wave crests or tooth crests of the fixed section are heated to melt the inner wall of the tube hole in the interference part to form a melting zone. The wave crests or tooth crests are embedded in the melting zone of the inner wall of the tube hole due to elasticity. After the melting zone is cooled, the wave crests or tooth crests are solidified and connected, thereby fully utilizing the elasticity and good thermal conductivity of the stainless steel needle body. Heat can be conducted to the fixed section after heating the free section of the needle body, without the need to transfer heat through the plastic area of ​​the plastic tube handle. While improving the heat conduction efficiency, it is fixed by welding without welding holes, and there is no need to destroy the integrity of the plastic tube handle.

[0012] According to a further technical solution, the fixing section has at least two wave crests or tooth crests, which are multiple-embedded to further improve the firmness of the connection.

[0013] As a further technical solution, the wave crest or tooth crest of the fixed section is heated by high frequency to generate eddy current heating on the needle body, or the stainless steel needle body is directly heated by electric current or microwave, and a variety of heating methods can be realized.

[0014] An acupuncture needle with a plastic handle comprises the above-mentioned fixing structure.

[0015] A method for fixing the fixing structure of the plastic-handled acupuncture needle body and the plastic tube handle, comprising the following steps:

[0016] Pull the fixed section of the needle body into the tube hole of the plastic tube handle, and the fixed section and the tube hole are interference fit;

[0017] The fixed section of the needle body is heated to the melting point of the plastic tube handle, and the inner wall of the tube hole in contact with the interference part of the fixed section melts to form a melting zone. The interference part of the fixed section is embedded in the melting zone of the inner wall of the tube hole. After the melting zone is cooled, the interference part is solidified and connected.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0020] (1) The utility model provides a plastic-handled acupuncture needle and a fixing structure of the needle body and the plastic tube handle, which fully utilizes the good heat absorption and heat conduction properties of the stainless steel needle body. On the basis of not destroying the appearance integrity of the plastic tube handle, the needle body fixing section and the plastic tube handle can be firmly connected without generating welding holes. The heat required for the connection can be achieved by a variety of heating methods, and the application range is wide;

[0021] (2) The plastic-handled acupuncture needle and the fixing structure of the needle body and the plastic tube handle of the utility model make full use of the elastic characteristics of the wave section or the sawtooth section, and can easily realize embedded fixation, and the operation is simple and quick;

[0022] (3) The utility model provides a plastic-handled acupuncture needle and a fixing structure and method for the needle body and the plastic tube handle, which has low manufacturing cost and can be welded without introducing other welding materials, thus saving materials and being environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the fixing structure of the plastic-handled acupuncture needle and the needle body and the plastic tube handle of a specific embodiment;

[0024] Figure 2 is a schematic structural diagram of a needle body in a specific embodiment;

[0025] Figure 3 It is a schematic diagram of the fixing structure of the plastic-handled acupuncture needle and the needle body and the plastic tube handle of a specific embodiment;

[0026] Figure 4 It is a schematic diagram of the structure of a plastic-handled acupuncture needle according to a specific embodiment.

[0027] In the figure: 1-needle body; 2-plastic tube handle; 11-fixed section; 12-free section; 21-tube hole; 111-arc embedding section without welding hole; 112-triangular cone embedding section without welding hole. DETAILED DESCRIPTION

[0028] In order to further understand the content of the utility model, the utility model is described in detail with reference to the accompanying drawings.

[0029] Example 1

[0030] The plastic handle acupuncture needle of this embodiment, such as Figure 1 , 2 As shown, it includes a needle body 1, a plastic tube handle 2 and a fixing structure that fixes the two together. The needle body 1 includes a fixed section 11 and a free section 12 that are connected together. The needle body 1 is generally a medical stainless steel wire. The distal end of the free section 12, i.e., the tip, is the needle end of the acupuncture needle body. The fixed section 11 is a part of the fixed section 11. Figure 1 , 2 As shown, it is generally the tail of the fixed section 11, and can also be as shown in Figure 3 , 4 As shown, the right position of the fixed section 11 close to the right end of the plastic tube handle 2, or even the entire fixed section 11, can be interference fit with the tube hole 21 of the plastic tube handle 2 to form a fixed structure that fixes the needle body 1 and the plastic tube handle 2. The interference portion of the fixed section 11 is embedded in the inner wall of the tube hole 21 of the plastic tube handle 2 to form an embedded fixed section without a welding hole, making full use of the elastic material of the stainless steel needle body and the plastic of the plastic tube handle 2. The height of the fixed section 11 is slightly larger than the inner diameter of the tube hole 21, so that the interference fit connection between the two can be achieved.

[0031] The fixing method of the fixing structure of the plastic-handled acupuncture needle body and the plastic tube handle of this embodiment comprises the following steps:

[0032] Step 1: pull the fixed section 11 of the needle body 1 into the tube hole 21 of the plastic tube handle 2, and the fixed section 11 and the tube hole 21 are interference fit;

[0033] Step 2: Heat the fixed section 11 of the needle body 1. When the temperature reaches the melting point of the plastic tube handle 2, the inner wall of the tube hole 21 in contact with the interference portion of the fixed section 11 melts to form a melting zone. The interference portion of the fixed section 11 is embedded in the melting zone of the inner wall of the tube hole 21. After the melting zone is cooled, the interference portion is solidified and connected.

[0034] The plastic handle acupuncture needle and the fixing structure and fixing method of the needle body and the plastic tube handle of this embodiment can make full use of the good heat absorption and heat conduction performance of the stainless steel needle body, and can be fixed and connected by embedded solidification without generating welding holes without destroying the appearance integrity of the plastic tube handle 2. The connection is firm and the needle body 1 is not easy to dislocate. The manufacturing method of the plastic tube handle 2 is not limited to extrusion or injection molding, and has a wide range of applications.

[0035] Example 2

[0036] The plastic handle acupuncture needle and the fixing structure of the needle body and the plastic tube handle of this embodiment have the same basic structure as the embodiment 1, and the difference or improvement is that the fixing section 11 is a wave section or a sawtooth section, and the wave crest or tooth crest part is embedded in the inner wall of the tube hole 21 of the plastic tube handle 2 to form a fixed portion. Figure 3 Or the arc-shaped embedded section 111 without welding holes or the triangular-shaped embedded section 112 without welding holes shown in 4, the wave section or the sawtooth section will generate elasticity, and it is easy to have an interference fit with the tube hole 21, or even be embedded into the inner wall of the tube hole 21, so that a firm connection can be easily achieved.

[0037] The fixing method of the fixing structure of the plastic-handled acupuncture needle body and the plastic tube handle of this embodiment comprises the following steps:

[0038] Step 1: Pull the wavy section or the serrated section of the needle body 1 into the tube hole 21 of the plastic tube handle 2;

[0039] Step 2: If Figure 3 As shown, the free section 12 of the needle body 1 near the opening of the tube hole 21 is heated by the heating head of the heating device, and the free section 12 conducts heat to the wavy section or the serrated section. After the temperature is raised to the melting point of the plastic material of the plastic tube handle 2, the inner wall of the tube hole 21 in contact with the wavy section or the serrated section melts to form a melting zone. The wavy section or the serrated section is deformed and radially expanded by heat, and the radially expanded part is embedded in the melting zone of the inner wall of the tube hole 21. After the melting zone is cooled, the radially expanded part forms an interference portion, and the wavy section or the serrated section of the needle body 1 and the tube hole 21 are solidified and connected.

[0040] The plastic-handled acupuncture needle and the fixing structure and fixing method of the needle body and the plastic tube handle of this embodiment, the heating device can be a high-frequency eddy current heating device on the needle body 1, or it can be a current heating device directly passing through the stainless steel needle body 1, such as an electric soldering iron, or it can be a microwave heating device. Various heating methods can be realized and have a wide range of applications. When the fixed section 11 is wavy, after cooling and solidification in step 2, the wavy section and the tube hole 21 can be realized to have an arc-shaped interference fit, forming an arc-shaped embedded section 111 without a welding hole, and the interference contact between the two is relatively sufficient; when the fixed section 11 is serrated, the sawtooth tip of the serrated section can achieve a piercing interference fit with the tube hole 21, forming a triangular cone embedded section 112 without a welding hole, and the interference contact between the two is relatively deep, and each has its own advantages. Moreover, the wavy section or the serrated section has elastic properties, which makes it easy to have an interference fit with the tube hole 21, and even embed into the inner wall of the tube hole 21, and a firm connection is easy to achieve; another advantage is that there is no need to transfer heat through the plastic area of ​​the plastic tube handle 2, which improves the heat conduction efficiency, and there is no welding hole welding fixation, and there is no need to destroy the integrity of the plastic tube handle 2.

[0041] Example 3

[0042] The fixing structure and fixing method of the plastic handle acupuncture needle and the needle body and the plastic tube handle of this embodiment have the same basic structure and steps as those of Embodiment 2, except that: the wave crest or tooth peak of the fixing section 11 is at least 2, such as Figures 1 to 4 There are four wave peaks, two on the top and two on the bottom, which can realize four-fold interference embedding, forming a multi-point solidification connection, further improving the firmness of the connection. In step 2 of the fixing method, if the wave segment or the sawtooth segment is axially elongated due to heat, it is pressed back by the free segment 12 before cooling and solidification, which can effectively increase the radial expansion of the interference portion after cooling and solidification, further improving the firmness of the connection.

[0043] Example 4

[0044] The fixing structure and fixing method of the plastic-handled acupuncture needle and the needle body and the plastic tube handle of this embodiment have the same basic structure and steps as those of Example 2, with the difference or improvement being that the fixing section 11 is a helix, the diameter of the helix is ​​slightly larger than the diameter of the tube hole 21, and in step 2 of the fixing method, a multiple arc-loop interference fit between the helical section and the tube hole 21 can be achieved, and the interference contact between the two is more complete.

[0045] 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 fixing structure of a plastic-handled acupuncture needle body and a plastic tube handle, wherein the needle body (1) comprises a fixed section (11) and a free section (12) connected in one piece, Features: The fixing section (11) is interference fit with the tube hole (21) of the plastic tube handle (2), and the interference portion of the fixing section (11) is embedded in the inner wall of the tube hole (21) of the plastic tube handle (2); The fixing section (11) is a wave section or a sawtooth section, and the wave crest or tooth crest portion is embedded in the inner wall of the tube hole (21) of the plastic tube handle (2); The wave crest or tooth crest of the fixed section (11) is heated to melt the inner wall of the tube hole (21) at the interference portion, forming a melting zone. The wave crest or tooth crest is elastically embedded in the melting zone of the inner wall of the tube hole (21). After the melting zone is cooled, the wave crest or tooth crest is solidified and connected to form a non-welded hole type arc embedded section (111) or a non-welded hole type triangular pyramid embedded section (112).

2. The fixing structure of the plastic-handled acupuncture needle body and the plastic tube handle according to claim 1, Features: The fixed section (11) has at least two wave crests or tooth peaks.

3. The fixing structure of the plastic-handled acupuncture needle body and the plastic tube handle according to claim 1, Features: The wave crest or tooth crest of the fixed section (11) is heated by high frequency to generate eddy current heating on the needle body (1), or directly heats the stainless steel needle body (1) by electric current or microwave.

4. A plastic handle acupuncture needle, Features: It comprises the fixing structure described in any one of claims 1 to 3.

Images