water-light needle

Abstract

The application discloses a water-light needle, which comprises a needle body, a needle seat and a needle cap, the needle seat is suitable for being connected with an external device, the needle cap is installed on the needle seat, the needle cap and the needle seat are matched with each other, and the needle body is suitable for being fixed through the needle seat and / or the needle cap. The technical scheme of the application sets the needle seat and the needle cap, thereby guiding the treatment solution to the needle body, increasing the area where the needle body is inserted into the needle seat and the needle cap, and improving the fixing strength of the needle body. Meanwhile, the needle seat and the needle cap limit the position of the needle body, thereby reducing the position deviation of the needle body caused by the injection and solidification of glue. In addition, the use amount of glue and the solidification time are reduced due to the reduction of the exposed part of the needle body, thereby improving the production efficiency. The position deviation of the needle body in the existing water-light needle is solved, and the effect of beauty treatment is improved.

Description

Technical Field

[0001] This invention relates to the field of medical aesthetics technology, and in particular to a type of hyaluronic acid injection. Background Technology

[0002] With the rapid development of the medical aesthetics industry, the application of mesotherapy is becoming increasingly widespread. Mesotherapy needles are designed with needles; during a mesotherapy treatment, the needle is first inserted into the skin, and then the treatment solution is injected into the skin through the needle to achieve the desired cosmetic effect.

[0003] The existing needle plate of the water light injection is flat, with openings on it that match the number of needles. The needles are fixed by inserting one end of the needle tail into the opening, and then injecting glue into the upper area of ​​the needle plate. After the glue solidifies, the needles are fixed. However, this method has the following problems.

[0004] On the one hand, although the needle's position is defined after the tail end is inserted into the needle plate, most of the needle body is still exposed outside the needle plate. Furthermore, the needle itself has a small diameter and is relatively soft. Therefore, during the overall gel injection, the exposed part of the needle will wobble relative to its axial position. The gel itself also has a high viscosity, making it difficult for the needle to return to its normal position after injection due to its flexibility. Consequently, after the gel solidifies, it is difficult to maintain a consistent spacing between the needle tips, making it difficult to keep the subcutaneous injection area uniform during mesotherapy.

[0005] On the other hand, since most of the area of ​​the needle exposed outside the needle plate is fixed by the injected colloid, a larger amount of colloid is used, and the overall solidification time of the colloid is also increased, which increases the production cycle required for each batch and reduces the overall production efficiency. Summary of the Invention

[0006] The main objective of this invention is to provide a hyaluronic acid injection that addresses the problem of needle misalignment in existing hyaluronic acid injections.

[0007] To achieve the above objectives, the present invention proposes a water-light needle comprising a needle body, a needle base, and a needle cap. The needle base is suitable for connection to an external device; the needle cap is mounted on the needle base, and the needle cap and the needle base cooperate with each other; the needle body is suitable for fixation by the needle base and / or the needle cap.

[0008] In one embodiment of the present invention, the needle holder includes a main body structure and a tube structure. The needle cap is installed inside the tube structure and is in contact with the surface of the main body structure. The outer circumferential surface of the needle cap is in contact with the inner circumferential surface of the tube structure. A plurality of needle grooves are formed between the needle cap and the tube structure. The needle body is adapted to be inserted into the needle grooves.

[0009] In one embodiment of the present invention, a plurality of first receiving grooves are formed on the circumferential inner surface of the tube structure. The first receiving grooves are uniformly arranged along the inner surface of the tube structure. The first receiving grooves are located between the tube structure and the needle cap. The first receiving grooves and the needle cap together form the needle groove. The needle body is in contact with the surfaces of the first receiving grooves and the needle cap respectively.

[0010] In one embodiment of the present invention, a fixing and sealing structure is further included, which is connected to the needle seat and the needle cap respectively, so as to fix the needle cap relative to the needle seat.

[0011] In one embodiment of the present invention, the fixed sealing structure is a colloid, the upper surface of the needle cap is lower than the upper surface of the tube structure, and the colloid is adapted to fill the space between the upper surface of the tube structure and the upper surface of the needle cap.

[0012] In one embodiment of the present invention, a fourth receiving groove is provided on the needle cap, the fourth receiving groove is located at the end of the needle cap away from the main structure, and the colloid is adapted to fill the fourth receiving groove.

[0013] In one embodiment of the present invention, a positioning post is provided on the main structure. The positioning post is located inside the tube structure. A third receiving groove is provided on the positioning post and a positioning hole is provided on the positioning post. The positioning post passes through the positioning hole, and the hole wall of the positioning hole and the third receiving groove surround each other to form the needle groove.

[0014] In one embodiment of the present invention, the needle cap is provided with a plurality of second receiving grooves, the second receiving grooves being positioned corresponding to the first receiving grooves, the first receiving grooves and the second receiving grooves together forming the needle groove, and the needle body being in contact with the surfaces of the first receiving groove and the second receiving groove respectively.

[0015] In one embodiment of the present invention, the needle seat has a plurality of positioning posts protruding from one end facing the needle cap, the needle cap has a plurality of positioning holes, each positioning post passes through a positioning hole so that the needle cap and the needle seat cooperate, each positioning post has a needle groove, and a plurality of needle bodies are provided, each needle body being inserted into a needle groove.

[0016] In one embodiment of the present invention, the needle cap is disposed on the end face of the needle seat away from the external device, the needle cap has a plurality of needle grooves, and the needle body has a plurality of needle bodies, each needle body being inserted into one of the needle grooves.

[0017] In one embodiment of the present invention, the end of the needle groove away from the main structure is chamfered so that the inner wall of the needle groove opening is conical.

[0018] In one embodiment of the present invention, the number of needles is several, and the needles are hollow needles or solid needles.

[0019] In one embodiment of the present invention, the water-light needle further includes a housing, which is movably sleeved on the outside of the needle base and the needle cap, and the needle body is disposed inside the housing.

[0020] In one embodiment of the present invention, the outer shell is provided with a plurality of guide portions, each of the guide portions having a guide hole, the guide hole extending along the direction of the needle body, and the end of each needle body away from the needle seat passing through a guide hole.

[0021] In one embodiment of the present invention, a negative pressure interface is provided on the peripheral side of the outer shell, and the negative pressure interface is connected to the cavity inside the outer shell for suctioning the treatment object.

[0022] In one embodiment of the present invention, the water light needle further includes an adjustment member, which is disposed at the end of the needle seat away from the needle body and is threadedly connected to the outer shell. The adjustment member rotates relative to the outer shell to drive the needle seat to move, thereby causing the needle body to extend or retract into the cavity inside the outer shell.

[0023] The water-light needle proposed in this invention includes a needle body, a needle hub, and a needle cap. One end of the needle body is inserted into the skin for injecting a treatment solution into the skin. The needle hub can be connected to an external device, such as an injection tube containing the treatment solution, and guides the treatment solution from the injection tube into the needle body. Simultaneously, the needle hub and needle cap cooperate to fix the needle body; for example, the needle body can be fixed to the needle hub, the needle body can be fixed to the needle cap, or the needle body can be fixed together with the needle cap and needle hub. By setting the needle hub and needle cap, while effectively guiding the treatment solution to the needle body, a larger area of ​​the needle body inserted into the needle hub and needle cap is provided, thus improving the fixation strength of the needle body.

[0024] Furthermore, during the glue injection process, the needle hub and needle cap limit the needle body, reducing the problem of needle body position deviation caused by glue injection and glue solidification. This ensures that the spacing between each needle body and the height of the needle tip are the same as or close to the set values, so that the treatment effect is more uniform during the water light injection treatment.

[0025] Furthermore, since the needle cap and needle seat fix the needle body to a greater extent, the needle body is exposed outside the needle seat and needle cap, requiring less of it to be sealed and fixed with colloid. This reduces the amount of colloid used, thereby shortening the colloid solidification time and improving production efficiency. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 This is a left view of the water-light needle of the present invention;

[0028] Figure 2 This is an exploded view of the water-light needle of the present invention;

[0029] Figure 3 This is a top view of the water-light needle of the present invention;

[0030] Figure 4 for Figure 3 Cross-sectional view of the hyaluronic acid needle along point AA;

[0031] Figure 5 This is an exploded view of the needle seat and needle cap in the water-light needle of the present invention;

[0032] Figure 6 This is a top view of the needle seat and needle cap in the water-light needle of the present invention.

[0033] Explanation of icon numbers:

[0034] 1 Hyaluronic acid injection 22 positioning holes 10 Needle hub 23 pin groove 11 Main structure 24 Fourth receiving slot 12 Tube structure 30 needle body 13 Positioning Post 40 shell 14 First receiving slot 41 Guiding Department 15 Third receiving slot 411 Guide hole 20 pin cap 42 negative pressure interface 21 Second receiving slot 50 Adjustment component

[0035] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0037] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Throughout the text, "and / or" and "and / or" have the same meaning, both indicating the inclusion of three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that simultaneously satisfies A and B. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0040] This invention proposes a water-light injection method 1.

[0041] Combination Figure 1 and Figure 2 As shown, in one embodiment of the present invention, the needle body 30, the needle seat 10, and the needle cap 20 are included. The needle seat 10 is adapted to be connected to an external device. The needle cap 20 is installed on the needle seat 10 and the needle cap 20 cooperates with each other. The needle body 30 is adapted to be fixed by the needle seat 10 and / or the needle cap 20.

[0042] In this embodiment, the hyaluronic acid injection 1 is mainly used in the medical aesthetics industry. A cosmetic injection is administered into the dermis layer beneath the epidermis using the hyaluronic acid injection 1 to achieve cosmetic treatment. The hyaluronic acid injection 1 proposed in this invention includes a needle base 10, a needle cap 20, and a needle body 30. The needle base 10 and needle cap 20 are detachably connected, and mounting the needle cap 20 onto the needle base 10 reduces the difficulty of mold making for the hyaluronic acid injection 1 structure. A fluid channel can be provided inside the needle body 30 to allow the treatment solution to flow out from the fluid channel inside the needle body 30. Furthermore, the end of the needle body 30 facing the treatment object has a cut, the end face of which is beveled, facilitating the insertion of the needle body 30 into the treatment object. One end of the needle base 10 is provided with an inlet connected to an injection tube, through which the treatment solution in the injection tube enters the fluid channel inside the needle body 30. The needle cap 20 is installed on the needle base 10. The needle body 30 can be installed on the needle cap 20 or the needle base 10, or the needle body 30 can be fixed by the interaction between the needle base 10 and the needle cap 20. By setting the needle base 10 and the needle cap 20, the needle body 30 is limited and fixed, improving its stability. At the same time, due to the limitation and protection of the needle base 10 and the needle cap 20, the problem of needle body 30 displacement caused by glue injection and solidification during the glue injection process is reduced. Therefore, the spacing between each needle body 30 of the produced water light needle 1 and the height of the needle tip are the same as or close to the set value, so that the depth of needle body 30 inserted into the skin during water light needle treatment is the same as the set value, thereby improving the uniformity of the treatment effect of needle body 30. Furthermore, the needle seat 10 and needle cap 20 have a large fixed contact area with the needle body 30, resulting in less exposed part of the needle body 30. Therefore, the amount of colloid used and the solidification time are both reduced, thereby improving the production efficiency of the water light needle 1.

[0043] Combination Figure 2 and Figure 5 As shown, in one embodiment of the present invention, the needle holder 10 includes a main body structure 11 and a tube structure 12. The needle cap 20 is installed inside the tube structure 12 and is in contact with the surface of the main body structure 11. The outer circumferential surface of the needle cap 20 is in contact with the inner circumferential surface of the tube structure 12. A plurality of needle grooves 23 are formed between the needle cap 20 and the tube structure 12. The needle body 30 is adapted to be inserted into the needle grooves 23.

[0044] In this embodiment, one end of the main structure 11 is provided with an inlet for connecting to the injection tube, and the other end is connected to the tube structure 12. The main structure 11 and the tube structure 12 can be integrally injection molded, and the tubing inside the tube structure 12 is used to set the needle cap 20. It can be understood that the shape of the inner wall of the tube in the tube structure 12 is the same as the shape of the circumferential outer surface of the needle cap 20, so that the needle groove 23 can be set in the tube structure 12. Furthermore, multiple recesses can be provided at intervals along the circumference of the inner wall of the tube, and multiple protrusions can be provided at intervals on the outer periphery of the needle cap 20. The recesses and protrusions are the same in shape and size, and when the needle cap 20 is embedded in the tube structure 12, the positions of each recess and each protrusion correspond to each other, so that the protrusions and recesses can cooperate. By providing a recessed portion on the tube structure 12 and a protrusion on the outside of the needle cap 20, the needle cap 20 will not rotate after being installed inside the tube structure 12, thereby improving the stability of the needle body 30 and further limiting the bending or deformation of the needle body 30. In addition, the tube structure 12 and the needle cap 20 can also be configured with a rectangular, trapezoidal, or other angular cross-sectional shape, as long as it can effectively limit the rotation of the needle cap 20, it falls within the scope of protection of this application, and no further limitations are made here.

[0045] After the needle cap 20 is embedded in the tube structure 12, the needle cap 20 and the tube structure 12 together form multiple needle grooves 23. The diameter of the needle grooves 23 should be slightly larger than the diameter of the needle body 30 to ensure that the needle body 30 can be inserted into the needle grooves 23 while minimizing the gap between the needle body 30 and the needle grooves 23, thereby improving the stability of the needle body 30. The needle grooves 23 limit and fix the needle body 30. When using the water light needle 1 for cosmetic treatment, the needle grooves 23 limit the deformation and bending of the needle body 30 to a certain extent. At the same time, the ends of multiple needle bodies 30 away from the needle grooves 23 are on the same horizontal plane, thereby ensuring that the multiple needle bodies 30 penetrate the skin to the same depth, improving the effect of cosmetic treatment. The material of the water light needle 1 must meet the safety standards of medical-grade devices. The material of the needle body 30 can be metal to give it a certain structural strength and hardness, making it easy to insert into the treatment object while reducing the risk of bending or deformation. The needle holder 10 and needle cap 20 can be made of plastic to reduce the overall structural weight and facilitate one-piece injection molding, thereby reducing processing costs.

[0046] Combination Figure 5 As shown, in one embodiment of the present invention, a plurality of first receiving grooves 14 are provided on the circumferential inner surface of the tube structure 12. The first receiving grooves 14 are uniformly arranged along the inner surface of the tube structure 12. The first receiving grooves 14 are located between the tube structure 12 and the needle cap 20. The first receiving grooves 14 and the needle cap 20 together form a needle groove 23. The needle body 30 is in contact with the surfaces of the first receiving grooves 14 and the needle cap 20 respectively.

[0047] In this embodiment, the cross-sectional shape of the first receiving groove 14 should be adapted to the shape of the needle body 30 so that when the needle body 30 is inserted into the needle groove 23, the needle body 30 contacts or maintains a small gap with the groove wall surface of the first receiving groove 14, thereby improving the stability of the needle body 30. Multiple first receiving grooves 14 provided on the inner surface of the tube structure 12 extend along the insertion direction of the needle body 30. It is understood that, while ensuring the depth to which the needle body 30 can penetrate the skin, the depth of the first receiving groove 14 should be designed to be as long as possible to increase the contact area between the needle body 30 and the groove wall of the needle groove 23, further improving the stability of the needle body 30. The position and number of the first receiving grooves 14 on the inner surface of the tube structure 12 can be designed according to the required needle body 30 density and insertion position during actual medical treatment. The multiple first receiving grooves 14 are evenly arranged along the inner surface of the tube to improve the uniformity of the needle groove arrangement 23, thereby improving the uniformity of the water-light injection 1 treatment. In this embodiment, the outer surface of the needle cap 20 is flat. After the needle body 30 is inserted into the needle groove 23, the needle body 30 abuts against the groove wall of the first receiving groove 14 and the outer surface of the needle cap 20. The positional and dimensional accuracy of the needle groove 23 formed by this structural design is only related to the machining accuracy of the first receiving groove 14. The machining accuracy of the needle cap 20 and the assembly accuracy of the needle cap 20 and the tube structure 12 do not affect the accuracy of the needle groove 23, thus greatly reducing the machining difficulty. At the same time, compared with the solution of opening grooves on the inner side of the tube structure 12 and the outer side of the needle cap 20 respectively, and then enclosing the two grooves to form the needle groove 23, the needle groove 23 design of this application reduces the impact of the assembly error between the needle cap 20 and the tube structure 12 on the accuracy of the needle groove 23, and improves the accuracy and machining convenience of the needle groove 23.

[0048] In one embodiment of the present invention, a fixing sealing structure is further included, which is connected to the needle seat 10 and the needle cap 20 respectively, so as to fix the needle cap 20 relative to the needle seat 10.

[0049] In this embodiment, since the needle cap 20 is disposed inside the tube structure 12, and the outer surface of the needle cap 20 is in contact with the inner surface of the tube structure 12, the needle cap 20 can move up and down within the tube structure 12. Meanwhile, the needle groove 23 is formed by the enclosing connection between the needle cap 20 and the tube structure 12; therefore, the stability of the connection between the needle cap 20 and the tube structure 12 affects the stability of the needle groove 23 and the needle body 30. By setting a fixed sealing structure, the needle seat 10 and the needle cap 20 are fixedly connected, thereby improving the connection strength and stability between the needle cap 20 and the needle seat 10, and thus ensuring the stability of the needle groove 23. The fixed sealing structure can be a colloid, a sealing ring, etc., to fix the needle cap 20 and the needle seat 10. Understandably, in order to ensure that the needle body 30 is smoothly inserted into the needle groove 23, the diameter of the needle groove 23 should be slightly larger than the diameter of the needle body 30. As a result, there is a certain gap between the needle body 30 and the groove wall of the needle groove 23. By setting a fixed sealing structure, the gap between the needle body 30 and the needle groove 23 is sealed, thereby preventing the treatment fluid from flowing out from the gap between the needle body 30 and the needle groove 23.

[0050] In one embodiment of the present invention, the fixed sealing structure is a colloid, the upper surface of the needle cap 20 is lower than the upper surface of the tube structure 12, and the colloid is suitable for filling between the upper surfaces of the tube structure 12 and the needle cap 20.

[0051] In this embodiment, because there is a certain gap between the needle body 30 and the needle groove 23, the needle body 30 can move in the extending direction after being inserted into the needle groove 23. This application first limits the needle body 30 within the needle groove 23, and then fills the tube structure 12 and the upper surface of the needle cap 20 with colloid. This fixes the needle seat 10 and the needle cap 20 while also sealing the gap between the needle body 30 and the needle groove 23 to fix the needle body 30, further limiting the possibility of bending, deformation, or displacement of the needle body 30. It is understood that the colloid should also have a certain viscosity to seal the gap between the groove wall of the needle groove 23 and the needle body 30, while avoiding the possibility that its high fluidity would cause the colloid to flow to the bottom of the needle groove 23, thus blocking the entry of the treatment fluid into the needle body 30.

[0052] Furthermore, the upper surface of the needle cap 20 is set to be lower than the upper surface of the tube structure 12, so that the upper surface of the needle cap 20 and the inner wall of the tube structure 12 form a glue groove, and the glue is filled in the glue groove, which increases the contact area between the glue and the tube structure 12 and the needle body 30, thereby further improving the connection strength between the glue and the needle seat 10 and the glue and the needle body 30.

[0053] Combination Figure 6 As shown, in one embodiment of the present invention, a fourth receiving groove 24 is provided on the needle cap 20. The fourth receiving groove 24 is located at the end of the needle cap 20 away from the main structure 11, and the colloid is suitable for filling the fourth receiving groove 24.

[0054] In this embodiment, the fourth receiving groove 24 opened on the needle cap 20 increases the contact area between the colloid and the needle cap 20, thereby further improving the connection strength between the colloid and the needle cap 20.

[0055] Combination Figure 5 and Figure 6 As shown, in one embodiment of the present invention, a positioning post 13 is provided on the main structure 11. The positioning post 13 is located inside the tube structure 12. A third receiving groove 15 is provided on the positioning post 13. A positioning hole 22 is provided on the needle cap 20. The positioning post 13 passes through the positioning hole 22, and the hole wall of the positioning hole 22 and the third receiving groove 15 surround each other to form a needle groove 23.

[0056] In this embodiment, by setting a positioning post 13 on the main structure 11 and opening a positioning hole 22 on the needle cap 20, the accuracy of the assembly of the needle cap 20 and the needle base 10 is improved, thereby ensuring the stability of the needle groove 23 formed by the needle cap 20 and the tube structure 12, which facilitates the installation of the needle body 30. Furthermore, the needle groove 23 formed by the third receiving groove 15 on the positioning post 13 and the hole wall of the positioning hole 22 is used to insert the needle body 30, and the needle body 30 is located in the middle of the needle base 10 and the needle cap 20. As can be seen from the description of the above embodiment, multiple needle bodies 30 are provided between the inner wall of the tube structure 12 and the outer periphery of the needle cap 20. Therefore, setting a needle body 30 in the middle of the tube structure 12 and the needle cap 20 further improves the uniformity of the distribution of multiple needle bodies 30 of the water light needle 1 and the treatment effect of the treatment object being located in the center of the water light needle 1.

[0057] In one embodiment, multiple needle grooves 23 are provided, with equal spacing in the front-back, left-right, and right directions. The multiple needle grooves 23 are arranged in a rectangular array, such as a 2x2, 3x3, or 3x4 arrangement. Furthermore, each needle body 30 has the same length, and the length of the needle body 30 extending out of the needle groove 23 is also the same. This ensures that during the treatment of the patient, the multiple needle bodies 30 penetrate the patient more evenly and to a consistent depth, thereby improving the treatment effect.

[0058] Combination Figure 5 and Figure 6 As shown, in one embodiment of the present invention, a plurality of second receiving grooves 21 are provided on the needle cap 20. The second receiving grooves 21 correspond to the positions of the first receiving grooves 14. The first receiving grooves 14 and the second receiving grooves 21 together form a needle groove 23. The needle body 30 is in contact with the surfaces of the first receiving groove 14 and the second receiving grooves 21 respectively.

[0059] In this embodiment, the shape of the second receiving groove 21 on the needle cap 20 is the same as that of the first receiving groove 14. For example, both can be configured as grooves with a semi-circular cross-section, so that the first receiving groove 14 and the second receiving groove 21 together form a needle groove 23 with a circular cross-section, which facilitates cooperation with the needle body 30, reduces the gap between the needle body 30 and the groove wall of the needle groove 23, and thus improves the stability of the needle body 30. It can be understood that the number of second receiving grooves 21 is the same as the number of first receiving grooves 14, and after the needle cap 20 is embedded in the tube structure 12, the position of each second receiving groove 21 corresponds to one first receiving groove 14.

[0060] In one embodiment of the present invention, a plurality of positioning posts 13 are provided on one end of the needle base 10 facing the needle cap 20, and a plurality of positioning holes 22 are provided on the needle cap 20. Each positioning post 13 passes through a positioning hole 22 so that the needle cap 20 and the needle base 10 cooperate. Each positioning post 13 is provided with a needle groove 23. A plurality of needle bodies 30 are provided, and each needle body 30 is inserted into a needle groove 23.

[0061] In this embodiment, multiple positioning posts 13 are evenly arranged on the end face of the needle seat 10 facing the needle cap 20. The positioning posts 13 serve to limit the connection between the needle seat 10 and the needle cap 20, thereby improving the positioning accuracy and connection stability of the connection between the needle seat 10 and the needle cap 20. In this embodiment, the needle groove 23 is formed on the positioning post 13. The dimensional accuracy of the needle groove 23 is only related to the positioning post 13 and the grooving accuracy, eliminating the influence of the assembly error of the needle cap 20 and the needle seat 10 on the position and size of the needle groove 23, thereby improving the convenience and assembly accuracy of the connection between the needle body 30 and the needle groove 23.

[0062] In one embodiment of the present invention, a needle cap 20 is disposed on the end face of the needle holder 10 away from the external device. The needle cap 20 has a plurality of needle grooves 23 and a plurality of needle bodies 30, each needle body 30 being inserted into a needle groove 23.

[0063] In this embodiment, the needle groove 23 can also be formed on the end face of the needle cap 20, with multiple needle grooves 23 evenly spaced on the surface of the needle cap 20 away from the needle base 10. In this case, the size and positional accuracy of the needle groove 23 are only related to the machining accuracy of the needle cap 20, and the technical effects mentioned in the above embodiments can be achieved. It is understood that the needle groove 23 formed on the needle cap 20 needs to communicate with the liquid inlet on the needle base 10 so that after the needle body 30 is inserted into the needle groove 23, the treatment fluid can enter the needle body 30 through the liquid inlet.

[0064] Combination Figure 5 and Figure 6 As shown, in one embodiment of the present invention, the end of the needle groove 23 away from the main structure 11 is chamfered so that the inner wall of the groove opening of the needle groove 23 is conical.

[0065] In this embodiment, each needle groove 23 has a chamfer at the end furthest from the main structure 11. The chamfer increases the diameter of the opening of the needle groove 23, facilitating the insertion of the needle body 30 into the needle groove 23. In this embodiment, chamfers are provided around the opening of the needle groove 23, making the inner wall of the opening conical. In other embodiments, chamfers may be provided only on one side or part of the groove wall of the needle groove 23. Any structure that increases the opening of the groove and facilitates the insertion of the needle body 30 into the needle groove 23 falls within the scope of protection of this application.

[0066] In one embodiment of the present invention, the number of needle bodies 30 is several, and the needle body 30 is a hollow needle or a solid needle.

[0067] In this embodiment, multiple needle bodies 30 are provided, and the needle bodies 30 can be configured as hollow needles or solid needles. When the needle body 30 is a hollow needle, a fluid channel is formed inside the needle body 30 to facilitate the injection of the treatment solution into the skin for cosmetic treatment purposes. Furthermore, when the needle body 30 is a solid needle, the treatment solution can flow out along the surface of the solid needle and, after the solid needle is inserted into the skin, enter the dermis layer under the skin along with the solid needle to achieve the purpose of cosmetic treatment.

[0068] Combination Figures 1-4 As shown, in one embodiment of the present invention, the water light needle 1 further includes a housing 40, which is movably sleeved on the outside of the needle base 10 and the needle cap 20, and the needle body 30 is disposed inside the housing 40.

[0069] In this embodiment, the outer shell 40 is fitted over the outside of the needle holder 10 and the needle body 30 to protect the needle body 30 from bending due to impact. One end of the outer shell 40 has an opening through which the needle holder 10, needle cap 20, and needle body 30 pass and are movably disposed within the outer shell 40. The other end of the outer shell 40 is used to contact the treatment subject, and the needle body 30 can extend through the other end of the outer shell 40 to insert into the treatment subject, thereby achieving the purpose of cosmetic treatment. The outer shell 40 can be cylindrical in shape to reduce the possibility of sharp edges causing scratches to the treatment subject. The internal cavity shape of the outer shell 40 can be adapted to the shape of the needle holder 10 to facilitate movement of the needle holder 10 within the cavity.

[0070] Combination Figures 2-4 As shown, in one embodiment of the present invention, the outer shell 40 is provided with a plurality of guide portions 41, each guide portion 41 having a guide hole 411. The guide hole 411 extends along the direction of the needle body 30, and the end of each needle body 30 away from the needle seat 10 passes through a guide hole 411.

[0071] In this embodiment, the end of the needle body 30 away from the needle seat 10 and the needle cap 20 is disposed inside the outer casing 40. Multiple guide portions 41 are provided inside the outer casing 40 to limit the movement of the needle body 30, further improving its stability and reducing the likelihood of bending or deformation. The diameter of the guide hole 411 opened within the guide portion 41 should be slightly larger than the diameter of the needle body 30. Furthermore, the guide hole 411 can be configured such that its diameter gradually decreases from the end facing the needle seat 10 to the end away from the needle seat 10, so that when the outer casing 40 is fitted over the needle body 30, the needle body 30 preferentially passes through the end with the larger diameter of the guide hole 411, facilitating the insertion of the needle body 30 into the guide hole 411 and improving the ease of assembly of the outer casing 40. It is understood that the position and size of the guide hole 411 are adapted to the needle body 30 so that each needle body 30 is inserted into a corresponding guide hole 411.

[0072] Combination Figures 1-4 As shown, in one embodiment of the present invention, a negative pressure interface 42 is provided on the peripheral side of the outer shell 40. The negative pressure interface 42 is connected to the cavity inside the outer shell 40 to suction the treatment object.

[0073] In this embodiment, a negative pressure connector is protruding from the peripheral side of the outer shell 40. A negative pressure channel communicating with the interior of the outer shell 40 is formed within the negative pressure connector. A negative pressure interface 42 is located at the end of the negative pressure connector furthest from the outer shell 40 and communicates with the negative pressure channel. The negative pressure interface 42 connects to a negative pressure device. When the outer shell 40 of the water-light needle 1 comes into contact with the treatment object, the negative pressure device draws air from the cavity inside the outer shell 40 through the negative pressure interface 42, causing the portion of the treatment object in contact with the end face of the outer shell 40 to be sucked tightly. When the needle 30 is inserted into the treatment object, it causes a depression on the surface of the treatment object. Therefore, the negative pressure interface 42 is used to pre-suction and bulge the treatment object, ensuring that the surface of the treatment object is horizontal or nearly horizontal when the needle 30 is inserted, thus guaranteeing that the depth to which the needle 30 is inserted into the treatment object is the same or similar, improving the treatment effect.

[0074] Combination Figure 1 and Figure 2 As shown, in one embodiment of the present invention, the water light needle 1 further includes an adjustment member 50. The adjustment member 50 is disposed at the end of the needle seat 10 away from the needle body 30 and is threadedly connected to the outer shell 40. The adjustment member 50 rotates relative to the outer shell 40 to drive the needle seat 10 to move, thereby causing the needle body 30 to extend or retract into the cavity inside the outer shell 40.

[0075] In this embodiment, threads are provided on both the inner side of the adjusting member 50 and the outer side of the outer shell 40 to allow the adjusting member 50 to be threadedly connected to the outer shell 40. By rotating the adjusting member 50, the adjusting member 50 can be moved axially along the outer shell 40. At the same time, the adjusting member 50 is connected to the end of the needle holder 10 away from the needle body 30, thereby driving the needle holder 10 and the needle body 30 to move axially along the outer shell 40. When using the water light needle 1 for treatment, first, the end of the outer shell 40 away from the adjusting member 50 is brought into contact with the treatment object. Then, a negative pressure device is used to suction the treatment object through the negative pressure interface 42. Then, the adjusting member 50 is rotated so that the needle body 30 extends out of the outer shell 40 and is inserted into the treatment object. The end of the needle holder 10 away from the outer shell 40 is also provided with an injection tube, which is connected to the injection channel inside the needle body 30. During injection, a syringe containing treatment fluid is connected to the injection tube. The syringe is pushed so that the injection fluid passes through the injection tube and the injection channel in sequence, and finally is injected into the treatment object to complete the cosmetic treatment. In other embodiments, the adjusting member 50 is sleeved on the outside of the outer shell 40, with its inner circumferential side surface fitting against the outer surface of the outer shell 40, and the adjusting member 50 is rotatable relative to the outer shell 40 in its circumferential direction. A threaded hole is provided at the center of the adjusting member 50, and it is threadedly connected to the main structure 11. When the adjusting member 50 is rotated circumferentially along the outer shell 40, the adjusting member 50 drives the main structure 11 to move axially along the outer shell 40, thereby causing the needle body 30 to extend or retract, thus achieving cosmetic treatment.

[0076] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A type of hyaluronic acid injection, characterized in that, include: Needle body; Needle holder, the needle holder being suitable for connection to an external device; A needle cap is mounted on the needle base, and the needle cap and the needle base cooperate with each other. The needle body is adapted to be fixed by the needle base and / or the needle cap. The needle hub includes a main structure and a tube structure. The needle cap is installed inside the tube structure and fits against the surface of the main structure. The outer circumferential surface of the needle cap fits against the inner circumferential surface of the tube structure. A plurality of needle grooves are formed between the needle cap and the tube structure. The needle body is adapted to be inserted into the needle grooves. The upper surface of the needle cap is lower than the upper surface of the tube structure.

2. The water-light injection as described in claim 1, characterized in that, The inner circumferential surface of the tube structure is provided with a plurality of first receiving grooves. The first receiving grooves are evenly distributed along the inner surface of the tube structure. The first receiving grooves are located between the tube structure and the needle cap. The first receiving grooves and the needle cap together form the needle groove. The needle body is in contact with the surfaces of the first receiving grooves and the needle cap respectively.

3. The water-light injection as described in claim 1, characterized in that, It also includes a fixing and sealing structure, which is connected to the needle seat and the needle cap respectively, so as to fix the needle cap relative to the needle seat.

4. The water-light injection as described in claim 3, characterized in that, The fixed sealing structure is a colloid, which is suitable for filling between the tube structure and the upper surface of the needle cap.

5. The water-light injection as described in claim 4, characterized in that, The needle cap has a fourth receiving groove, which is located at the end of the needle cap away from the main structure, and the colloid is adapted to fill the fourth receiving groove.

6. The water-light injection as described in claim 1, characterized in that, The main structure is provided with a positioning post, which is located inside the tube structure. The positioning post has a third receiving groove, and the needle cap has a positioning hole. The positioning post passes through the positioning hole, and the hole wall of the positioning hole and the third receiving groove surround each other to form the needle groove.

7. The water-light injection as described in claim 2, characterized in that, The needle cap has several second receiving grooves, which correspond to the positions of the first receiving grooves. The first receiving groove and the second receiving grooves together form the needle groove, and the needle body is in contact with the surfaces of the first receiving groove and the second receiving groove respectively.

8. The water-light injection as described in claim 1, characterized in that, The needle base has a plurality of positioning posts protruding from one end facing the needle cap. The needle cap has a plurality of positioning holes. Each positioning post passes through a positioning hole to make the needle cap and the needle base cooperate. Each positioning post has a needle groove. There are a plurality of needle bodies. Each needle body is inserted into a needle groove.

9. The water-light injection as described in claim 1, characterized in that, The needle cap is located on the end face of the needle holder away from the external device. The needle cap has multiple needle grooves, and there are multiple needle bodies. Each needle body is inserted into one of the needle grooves.

10. The hyaluronic acid injection as described in any one of claims 1-7, characterized in that, The end of the needle groove away from the main structure is chamfered so that the inner wall of the needle groove opening is conical.

11. The hyaluronic acid injection as described in any one of claims 1-7, characterized in that, The number of needles is several, and the needles are either hollow or solid.

12. The hyaluronic acid injection as described in any one of claims 1-7, characterized in that, The water-light needle also includes a housing, which is movably sleeved on the outside of the needle base and the needle cap, and the needle body is disposed inside the housing.

13. The water-light injection as described in claim 12, characterized in that, The outer shell has multiple guide parts inside, each of which has a guide hole. The guide hole extends along the direction of the needle body, and the end of each needle body away from the needle seat passes through a guide hole.

14. The water-light injection as described in claim 12, characterized in that, The outer shell has a negative pressure port on its peripheral side, which is connected to the cavity inside the outer shell to suction the treatment object.

15. The water-light injection as described in claim 12, characterized in that, The water-light needle also includes an adjustment component, which is located at the end of the needle holder away from the needle body and is threadedly connected to the outer shell. The adjustment component rotates relative to the outer shell to drive the needle holder to move, thereby causing the needle body to extend or retract into the cavity inside the outer shell.

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