Sterile injection needle with protection function

Abstract

The utility model relates to a sterile injection needle with a protection function, which comprises a sterile injection needle body provided with a negative pressure cavity, the sterile injection needle body is provided with a cone for a needle tube to penetrate out in the negative pressure cavity, and the sterile injection needle body is provided with protection parts capable of elastically deforming at the bottom end of the negative pressure cavity and / or on the cone. The negative pressure syringe is simple in structure, can protect the skin through the protection part when being operated under negative pressure, and can enhance the sealing effect of the contact with the skin through the protection part, improve the injection effect and relieve pain.

Description

Technical Field

[0001] The utility model relates to medical beauty supplies, in particular to a sterile injection needle with a protection function. Background Art

[0002] A sterile injection needle is a medical device used for skin beauty. The liquid for beauty is injected into the dermis through the needle tip inserted into the skin at its front end. In order to accurately insert the needle tip of the existing sterile injection needle into the dermis layer to inject drugs, a negative pressure cavity is provided on the sterile injection needle, and then a negative pressure device is connected to the negative pressure cavity. During use, the negative pressure cavity covers the skin where the drug to be injected is located, and the skin is lifted and attached or adsorbed to the outlet of the needle tube seat by the suction force generated by the negative pressure in the negative pressure cavity. At this time, the bottom end of the negative pressure cavity and the outlet of the needle tube seat are both attached or adsorbed to the skin, and the needle tube penetrates out of the needle tube seat for injection. However, the bottom end of the negative pressure cavity of the existing sterile injection needle and the outlet of the needle tube seat are made of materials that cannot produce elastic deformation. When the skin is lifted by the negative pressure suction during use, the outlet of the needle tube seat will cause pressure injury or damage to the skin. Moreover, such a structure will also have poor sealing when the sterile injection needle contacts the skin, so it is necessary to increase the suction force generated by the negative pressure to lift the skin, thereby increasing the risk of skin injury. Summary of the Utility Model

[0003] Aiming at the existing deficiencies, the utility model provides a sterile injection needle with a protection function.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a sterile injection needle with a protection function, including a sterile injection needle body provided with a negative pressure cavity. A cone for the needle tube to penetrate through is arranged in the negative pressure cavity of the sterile injection needle body, and an elastic deformation protection piece is arranged at the bottom end of the negative pressure cavity and / or on the cone of the sterile injection needle body.

[0005] Preferably, the protection piece includes a conical sleeve sleeved on the cone and / or an annular sleeve arranged at the bottom end of the negative pressure cavity; a conical sleeve through hole for the needle tube to penetrate through is arranged on the conical sleeve.

[0006] Preferably, a clamping groove matching and engaging with the bottom end of the negative pressure cavity is arranged on the annular sleeve.

[0007] Preferably, the protection piece includes a conical sleeve sleeved on the cone and an annular sleeve sleeved on the bottom end of the negative pressure cavity; the protection piece further includes an annular connecting piece fittingly embedded in the negative pressure cavity for connecting the conical sleeve and the annular sleeve. The connecting piece is integrally formed with the conical sleeve and the annular sleeve. One end of the connecting piece is connected to the end of the conical sleeve far from the bottom end of the negative pressure cavity, and the other end of the connecting piece is connected to the end of the annular sleeve facing the inside of the negative pressure cavity; a connecting piece through hole for communicating with the negative pressure interface of the negative pressure cavity is arranged on the connecting piece.

[0008] Preferably, one end of the annular sleeve away from the cone extends outward along the circumferential edge of the annular sleeve to form an extension ring in a trumpet shape.

[0009] Preferably, the protective member includes a circular pad provided at the end of the cone and / or an annular pad provided at the bottom end of the negative pressure chamber; a circular pad through hole for the syringe needle to pass through is provided on the circular pad.

[0010] The beneficial effects of the utility model are as follows: The structure of the utility model is simple. When operating under negative pressure, the elastic deformation of the protective member can reduce the pressure on the skin caused by the bottom end of the negative pressure chamber of the sterile injection needle and the outlet of the syringe needle seat, playing a protective role for the skin. At the same time, the elastic deformation of the protective member can also deform along with the position of the skin it contacts, enhancing the sealing effect of the contact with the skin, enabling injection without increasing the suction force of the negative pressure, facilitating use, and further protecting the skin. Description of the Drawings

[0011] Figure 1 is a schematic structural diagram of an embodiment of the utility model;

[0012] Figure 2 is a schematic structural diagram of the embodiment of the utility model with the protective member removed;

[0013] Figure 3 is a schematic structural diagram of the protective member with an integral structure in an embodiment of the utility model;

[0014] Figure 4 is a schematic cross-sectional structural diagram of the protective member with an integral structure in an embodiment of the utility model;

[0015] Figure 5 is a schematic structural diagram of the tapered sleeve with a split structure in an embodiment of the utility model;

[0016] Figure 6 is a schematic structural diagram of the annular sleeve with a split structure in an embodiment of the utility model;

[0017] Names and serial numbers of components in the figure: 1 - Sterile injection needle body, 10 - Negative pressure chamber, 2 - Cone, 3 - Syringe needle, 4 - Protective member, 40 - Annular sleeve, 400 - Card slot, 41 - Tapered sleeve, 410 - Tapered sleeve through hole, 42 - Connecting member, 420 - Connecting member through hole, 43 - Extension ring. Detailed Embodiments

[0018] To more clearly illustrate the purpose, technical solutions, and advantages of the embodiments of the present utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. The description will be clear and complete. Obviously, the described embodiments are partial embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the protection scope of the present utility model. In addition, the directional terms mentioned in the present utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", etc., are only references to the directions in the attached drawings. The directional terms used are for better and clearer explanation and understanding of the present utility model, rather than indicating or implying the directions that the present utility model must have. Therefore, it should not be construed as a limitation to the present utility model.

[0019] The embodiments of the present utility model, for example Figures 1 to 2As shown in the figure, a sterile injection needle with a protective function includes a sterile injection needle body 1 provided with a negative pressure chamber 10. It can adopt any existing sterile injection needle with a negative pressure chamber 10. For example, the sterile injection needle body 1 includes a shell base, an inner liner needle seat, a knob cover, a liquid injection screw, and a needle tube. The inner liner needle seat is slidably arranged in the shell base and its tail is connected to the liquid injection screw. The liquid injection screw is a screw with a liquid flow channel penetrating the upper and lower surfaces of the liquid injection screw and an external thread. The liquid injection screw is threadedly connected to the internal thread of the knob cover on the outside. The knob cover is sleeved on the top of the shell base and can rotate relative to it. The knob cover encloses the inner liner needle seat in the shell base. The bottom surface of the shell base is provided with a negative pressure chamber 10. A negative pressure interface for connecting to an external negative pressure device is arranged on the chamber wall of the negative pressure chamber 10, and the negative pressure interface is communicated with the negative pressure chamber 10. The needle tube 3 is installed on the inner liner needle seat and can pass through the shell base and extend into the negative pressure chamber 10. A cone 2 for the needle tube 3 to pass through is arranged in the negative pressure chamber 10 of the sterile injection needle body 1. The cone 2 is arranged in the negative pressure chamber 10, and its cone bottom is connected to the bottom surface of the shell base in the negative pressure chamber 10. The cone 2 and the shell base are integrally formed. The corresponding number of cones 2 is set according to the number of needle tubes 3 arranged. For example, nine cones 2 are set in a 3*3 row and column structure, which means that nine needle tubes 2 are set at the same time. At this time, at the end of each cone 2, that is, at the cone top of the cone 2, which is also the end face of the cone 2 far from the bottom surface of the shell base, a corresponding cone through hole is arranged. The needle tube 3 passes through the cone through hole and extends into the negative pressure chamber 10. Elastic deformation protection parts 4 are arranged at the bottom end of the negative pressure chamber 10 and / or on the cone 2 of the sterile injection needle body 1. The protection parts 4 are made of silica gel material. At this time, at the bottom end of the negative pressure chamber 10 of the sterile injection needle body 1 (that is, the bottom end of the shell base, which is also the opening end where the negative pressure chamber contacts the skin), or on the cone 2, or on both the bottom end of the negative pressure chamber 10 and the cone 2 at the same time, protection parts 4 are arranged. When protection parts 4 are arranged on both the bottom end of the negative pressure chamber 10 and the cone 2 at the same time, according to different requirements, they can be set as two separate protection parts or a single protection part with an integral structure. When the protection part 4 is arranged only at the bottom end of the negative pressure chamber 10, it can only protect the skin in contact with the bottom end of the negative pressure chamber 10 and form a good seal for the negative pressure chamber 10. The disadvantage is that it cannot protect the skin in contact with the cone 2. When the protection part 4 is arranged only on the cone 2, it can protect the skin in contact with the cone 2. The disadvantage is that it cannot protect the skin in contact with the bottom end of the negative pressure chamber 10 and cannot improve the sealing effect of the negative pressure chamber 10 at this place. It is preferred to arrange protection parts 4 on both the bottom end of the negative pressure chamber 10 and the cone 2 at the same time, so as to provide more comprehensive and better protection for the skin.When operating under negative pressure in this way, the elastic deformation of the protective member 4 can reduce the pressure exerted on the skin by the bottom end of the negative pressure chamber 10 of the sterile injection needle and the end of the conical body 2, playing a protective role for the skin. At the same time, the elastic deformation of the protective member 4 can also deform along with the position of the skin it contacts, enhancing the sealing effect of the contact with the skin. Injection can be carried out without increasing the suction force of the negative pressure, which is convenient for use and further protects the skin.

[0020] Further improvements, such as Figure 1 、 Figures 3 to 6 As shown in Figure 5 and Figure 6 For the protective member 4, in one case, the protective member 4 includes a tapered sleeve 41 sleeved on the conical body 2 and / or an annular sleeve 40 provided at the bottom end of the negative pressure chamber 10; a tapered sleeve through hole 410 for the needle tube 3 to pass through is provided on the tapered sleeve 41, and the tapered sleeve through hole 410 is coaxial with the conical body through hole on the conical body 2. The needle tube 3 then sequentially passes through the conical body through hole and the tapered sleeve through hole 410 and extends into the negative pressure chamber 10. The tapered sleeve 41 is then fitted and sleeved on the conical body 2. When there are multiple conical bodies 2, a corresponding number of tapered sleeves 41 extend from the bottom or top surface of a bottom plate, and then the tapered sleeves 41 are sleeved on the conical bodies 2 one by one, thereby covering the bottom of the negative pressure chamber 10 and the conical body 2 entirely; at the same time, in practical applications, according to different requirements, the tapered sleeve 41 and the annular sleeve 40 are set as an integral structure or a split structure. For the split structure, as shown in Figure 3 and Figure 4As shown in the figure, the protective member 4 includes a conical sleeve 41 sleeved on the cone 2 and an annular sleeve 40 sleeved on the bottom end of the negative pressure chamber 10; the protective member 4 further includes an annular connecting member 42 that is fitted into the negative pressure chamber 10 for connecting the conical sleeve 41 and the annular sleeve 40. The connecting member 42 is integrally formed with the conical sleeve 41 and the annular sleeve 40. One end of the connecting member 42 is connected to the end of the conical sleeve 41 away from the bottom end of the negative pressure chamber 10, and the other end of the connecting member 42 is connected to the end of the annular sleeve 40 facing the inside of the negative pressure chamber 10. The connecting member 42 is closely attached to the inner wall of the negative pressure chamber 10. The bottom end of the connecting member 42 is connected to the inner side of the top end of the annular sleeve 40, and the top end of the connecting member 42 is connected to the conical bottom of the conical sleeve 41. That is, the inner wall of the negative pressure chamber 10 is completely covered by the annular sleeve 40, the connecting member 42, and the conical sleeve 41. A connecting member through hole 420 for communicating with the negative pressure interface of the negative pressure chamber 10 is provided on the connecting member 42. The connecting member through hole 420 communicates with the negative pressure interface on the inner wall of the negative pressure chamber 10, that is, on the outer shell base, to realize the communication between the inside of the negative pressure chamber 10 and the external negative pressure device.

[0021] Further improvement, as Figure 4 and Figure 6 As shown in the figure, for the setting of the annular sleeve 40 at the bottom end of the negative pressure chamber 10, a clamping groove 400 that is matched and clamped with the bottom end of the negative pressure chamber 10 is provided on the annular sleeve 40. That is, a clamping groove 400 that surrounds the annular sleeve 40 for one week is provided at the top of the annular sleeve 40, and then the bottom end of the negative pressure chamber 10 is matched and clamped in the clamping groove 400. After the connecting member 42 connects the annular sleeve 40 and the conical sleeve 41, the connecting member 42 is connected to the inner side of the top end of the annular sleeve 40, and the clamping groove 400 is provided on the outer side of the top end of the annular sleeve 40, which is convenient for the bottom end of the negative pressure chamber 10 to be clamped in the clamping groove 400.

[0022] Further improvement, as Figure 3 、 Figure 4 and Figure 6 As shown in the figure, one end of the annular sleeve 40 away from the cone 2 extends outward along the circumferential edge of the annular sleeve 40 to form a trumpet-shaped extension ring 43. The top end of the extension ring 43 is connected to the bottom end of the annular sleeve 40. Its shape is the same as that of the annular sleeve 40, and at the same time its diameter gradually increases from top to bottom to form a trumpet-shaped structure. In this way, during use, the contact area between the skin and the bottom end of the negative pressure chamber 10 is enlarged, further protecting the skin in contact with it and also improving the sealing effect when in contact with it.

[0023] For further improvement, in the case of the protective member, another situation is that the protective member 4 includes a circular pad provided at the end of the cone 2 and / or an annular pad provided at the bottom end of the negative pressure chamber; a circular pad through hole for the syringe to pass through is provided on the circular pad. In such a mechanism, only an annular pad is provided at the bottom end of the negative pressure chamber 10 and a circular pad is provided on the cone. The cavity wall of the negative pressure chamber 10 and the outer surface of the cone 2 are not provided with protection. The circular pad through hole is coaxial with the cone through hole on the cone 2. When there are multiple cones 2, a circular pad is provided on each cone 2, the structure is simpler and more material-saving. The circular pad can be provided at the apex of the cone 2 by pasting, and the annular pad can also be pasted at the bottom end of the negative pressure chamber 10, that is, the open end where the negative pressure chamber 10 contacts the skin, or a card slot matching the bottom end of the negative pressure chamber 10 is provided on the top surface of the annular pad, and it is connected to the bottom end of the negative pressure chamber 10 by a clamping method.

[0024] Although the present invention has been described in detail above with general descriptions and specific embodiments, based on the present invention, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection required by the present invention.

Claims

1. A sterile injection needle with protective function, characterized in that: The invention comprises a sterile injection needle body provided with a negative pressure cavity, wherein a cone for the needle tube to pass through is arranged in the negative pressure cavity, and an elastically deformable protective piece is arranged at the bottom end of the negative pressure cavity and / or on the cone.

2. The sterile injection needle with protective function according to claim 1, characterized in that :The protective member includes a conical sleeve sleeved on the cone and / or an annular sleeve arranged at the bottom end of the negative pressure chamber; the conical sleeve is provided with a conical sleeve through hole for the needle tube to pass through.

3. The sterile injection needle with protective function according to claim 2, characterized in that The annular sleeve is provided with a slot which matches and engages with the bottom end of the negative pressure chamber.

4. The sterile injection needle with protective function according to claim 2 or 3, characterized in that : The protective member includes a conical sleeve mounted on the cone and an annular sleeve mounted on the bottom end of the negative pressure chamber; the protective member also includes an annular connector that is matched and embedded in the negative pressure chamber and is used to connect the conical sleeve and the annular sleeve, the connector is integrally formed with the conical sleeve and the annular sleeve, one end of the connector is connected to an end of the conical sleeve away from the bottom end of the negative pressure chamber, and the other end of the connector is connected to an end of the annular sleeve facing the inside of the negative pressure chamber; the connector is provided with a connector through hole for communicating with the negative pressure interface of the negative pressure chamber.

5. The sterile injection needle with protective function according to claim 2, characterized in that The end of the annular sleeve away from the cone is provided with a trumpet-shaped extension ring extending outward along the circumferential edge of the annular sleeve.

6. The sterile injection needle with protective function according to claim 1, characterized in that :The protective member includes a circular pad arranged at the end of the cone and / or an annular pad arranged at the opening end of the negative pressure chamber; the circular pad is provided with a circular pad through hole for the needle tube to pass through.

Images