An injection needle

Abstract

The present disclosure relates to an injection needle, comprising a needle structure and an injection connector connected with one end of the needle structure, wherein the needle structure comprises a shell and a needle seat, one end of the needle seat is movably arranged in the shell, the shell is provided with a negative pressure channel, and the needle seat is provided with a sealing ring groove, and a sealing ring is arranged in the sealing ring groove to form a sealed connection between the needle seat and the inner wall of the shell. By using the technical scheme of the present disclosure, the internal sealing of the product can be effectively ensured, thereby effectively solving the problem of liquid leakage of the product.

Description

Technical Field

[0001] Embodiments of this disclosure relate to the field of medical devices, and more particularly to an injection needle. Background Technology

[0002] In recent years, with the increasing demand for skin rejuvenation, hyaluronic acid injections have become a popular skin rejuvenation treatment and are widely used in the medical aesthetics industry. Hyaluronic acid injections effectively improve dry, rough, and dull skin by directly injecting nutrients such as hyaluronic acid, vitamins, minerals, and amino acids into the dermis, increasing skin moisture content and radiance, achieving moisturizing, skin rejuvenation, and anti-wrinkle effects, making them highly popular among consumers. The rise of this treatment method has driven the continuous development and improvement of related equipment, including hyaluronic acid injection needles.

[0003] Currently, many mesotherapy needles on the market have design flaws. For example, when using a machine to administer mesotherapy, some adjustable needle designs can cause the medication to suspend on the face, resulting in leakage. This not only wastes the expensive medication but also affects the effectiveness of the medication, reducing the efficiency and quality of the cosmetic treatment. Utility Model Content

[0004] To alleviate or resolve product leakage issues, this disclosure provides an injection needle, which includes a needle delivery structure and an injection connector connected to one end of the needle delivery structure. The needle delivery structure includes a housing and a needle seat. One end of the needle seat is movably disposed within the housing. The housing is provided with a negative pressure channel. The needle seat is provided with a sealing ring groove, and a sealing ring is disposed in the sealing ring groove to form a sealed connection between the needle seat and the inner wall of the housing.

[0005] Optionally, the injection needle further includes a compressible spring, which is disposed between one end of the needle seat and the spring abutment of the outer shell, with both ends of the spring abutting or contacting the one end of the needle seat and the spring abutment, respectively; the spring force is set to overcome the friction between the sealing ring and the inner wall of the outer shell.

[0006] Optionally, the spring and the needle holder are arranged separately, or the spring is fixedly installed to the needle holder.

[0007] Optionally, the injection connector includes an injection nozzle and a cover, the cover being provided with a snap-fit ​​structure, and the outer wall of the housing being provided with a snap-fit ​​engagement structure that engages with the snap-fit.

[0008] Optionally, the injection needle is a water-light therapy device injection needle.

[0009] In this technical solution, the design of the sealing ring can effectively ensure the internal sealing of the product, thereby effectively solving the problem of product leakage. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the exploded structure of an injection needle according to an embodiment of the present invention;

[0011] Figure 2 This is a perspective view of the outer casing according to an embodiment of the present invention;

[0012] Figure 3 This is a perspective view of the top cover according to an embodiment of the present invention.

[0013] In the picture:

[0014] 1. Outer shell; 11. Negative pressure channel; 2. Needle tube; 3. Spring; 4. Needle seat; 41. Sealing groove; 5. Sealing ring; 6. Injection connector; 7. Top cover; 71. Buckle.

[0015] 10. Adaptive needle dispensing structure; 20. Injection connector. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art based on this application are within the protection scope of the present utility model.

[0017] like Figure 1 and Figure 2 As shown, this disclosure provides an injection needle, comprising:

[0018] The needle outlet structure 10 and the injection connector 20 connected to one end of the needle outlet structure are included. The needle outlet structure includes a housing 1 and a needle holder 4. One end of the needle holder is movably disposed within the housing. The housing is provided with a negative pressure channel 11, wherein:

[0019] The needle holder is provided with a sealing ring groove 41, and the sealing ring 5 is disposed in the sealing ring groove to form a sealed connection between the needle holder and the inner wall of the outer shell.

[0020] In an optional embodiment, the injection connector 20 includes an injection connector 6 and a top cover or cover 7. The injection connector 6 communicates with the needle hub 4 and can be externally connected to the injection device.

[0021] In an optional embodiment, the top cover 7 has a snap-fit ​​structure 71 that can engage with the outer shell 1.

[0022] In an optional embodiment, the injection needle further includes a compressible spring 3, which is disposed between one end of the needle seat 4 and the spring abutment portion (not shown, for example, an annular rib or a stepped portion) of the outer shell 1. The two ends of the spring 3 abut or contact one end of the needle seat and the spring abutment portion, respectively. The elastic force of the spring 3 is set to overcome the friction between the sealing ring and the inner wall of the outer shell.

[0023] Alternatively, the spring 3 and the needle holder 4 can be arranged separately, or the spring 3 can be fixedly installed on the needle holder 4.

[0024] For example, the installation of each structural component of this utility model is as follows:

[0025] The positions of each component are as follows Figure 1 As shown, the sealing ring 5 is fixed to the sealing ring groove 41 of the needle seat 4, the spring 3 is placed in the outer shell 1, the needle seat 4 is installed in the outer shell 1, the needle tube 2 is placed in different holes, glue is applied and cured, the injection connector 6 is installed on the needle seat 4, glue is applied and cured again, and finally the top cover 7 is installed on the outer shell 1 and locked by the designed snap-fit ​​structure.

[0026] The following is an example of how to use the injection needle of this utility model:

[0027] Pressing one end (lower end) of the needle protrusion structure onto the skin, the outer shell creates a sealed space or negative pressure space between the skin and the sealing ring based on the suction from the negative pressure channel 11. Due to external atmospheric pressure, the injection connector and needle hub are driven downwards. As the skin bulges due to the negative pressure, the needle 2 mounted on the needle hub also moves downwards to pierce the skin. Because the sealed space effectively creates negative pressure, this reduces or avoids the problem of medication suspension on the face and leakage caused by the needle tip not piercing the skin or insufficient penetration depth.

[0028] Additionally, if spring 3 is included, it can reposition the needle hub after injection at one site, facilitating injection at another site. This prevents excessive needle insertion due to the needle hub not repositioning, thus reducing pain. Spring 3 also slows down needle insertion, reducing pain.

[0029] It should be noted that the above technical solutions can be combined arbitrarily where logically permissible, and all are within the protection scope of this utility model. In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] The various embodiments in this specification are described in a related manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that variations and combinations of elements may be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An injection needle, comprising a needle outlet structure and an injection connector connected to one end of the needle outlet structure, the needle outlet structure comprising a housing (1) and a needle holder (4), one end of the needle holder being movably disposed within the housing, the housing being provided with a negative pressure channel (11), characterized in that: The needle holder is provided with a sealing ring groove (41), and a sealing ring (5) is disposed in the sealing ring groove to form a sealed connection between the needle holder and the inner wall of the outer shell.

2. The injection needle according to claim 1, characterized in that: The injection needle also includes a compressible spring (3), which is disposed between one end of the needle seat and the spring abutment of the outer shell, and the two ends of the spring abut or contact the one end of the needle seat and the spring abutment, respectively. The spring force is set to overcome the friction between the sealing ring and the inner wall of the housing.

3. The injection needle according to claim 2, characterized in that: The spring and the needle seat are arranged separately.

4. The injection needle according to claim 2, characterized in that: The spring is fixedly installed to the needle holder.

5. The injection needle according to claim 1, characterized in that: The injection connector includes an injection connector (6) and a cover (7). The cover is provided with a snap-fit ​​structure (71), and the outer wall of the outer shell is provided with a snap-fit ​​structure (12) that cooperates with the snap-fit.

6. The injection needle according to any one of claims 1-5, characterized in that: The injection needle is a water-light therapy injection needle.

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