Disposable sterile injection needle
By designing a breakable protective shield and spring-loaded cap structure on the injection needle, the problems of uncontrollable needle insertion depth and unstable injection speed are solved, enabling needle depth limitation and injection speed adjustment, thus ensuring safe and stable injection of cosmetic materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2026-03-24
AI Technical Summary
Existing injection needles cannot effectively limit the depth of needle insertion into the skin, which may lead to damage to muscles and nerves, and the injection speed of cosmetic materials is difficult to control.
It adopts a protective shield design, which limits the needle insertion depth by breaking the protective shield, and adjusts the injection speed of cosmetic materials by spring and cap, combined with drainage channel to regulate flow rate.
It effectively limits the depth of needle insertion, preventing damage to muscles and nerves, while also regulating the injection speed of cosmetic materials, making the injection smoother and more stable.
Smart Images
Figure CN224023996U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of medical apparatus and instruments, in particular to a disposable sterile injection needle. BACKGROUND
[0002] With the development of the cosmetic industry, more and more people have begun to improve the gloss and fullness of the skin by injecting cosmetic materials such as botulinum toxin into the skin.
[0003] When injecting cosmetic materials, the operating doctor needs to inject the cosmetic materials into the skin through the injection needle, and then slowly inject the cosmetic materials into the skin. However, the existing injection needle cannot limit the depth of the needle tube penetrating into the skin, so that the operating doctor may insert the needle head too deep into the skin when inserting the needle head of the injection needle into the skin, causing damage to the muscle and nerve. SUMMARY
[0004] The present application provides a disposable sterile injection needle, which sets the broken protective cover on the needle plug to limit the distance that the needle head can be inserted into the skin.
[0005] The disposable sterile injection needle provided by the present application adopts the following technical solution:
[0006] A disposable sterile injection needle, comprising a needle barrel and a needle head, the front end of the needle barrel is provided with a nipple, the needle head comprises an injection needle and a needle plug, the needle plug is connected with the nipple, a protective cover for protecting the injection needle is sleeved on the needle plug, a plurality of first ring grooves are formed on the protective cover, the plurality of first ring grooves are equidistantly arranged on the protective cover along the length direction of the protective cover, and a plurality of through grooves penetrating through the protective cover are formed on the groove walls of the plurality of first ring grooves.
[0007] By adopting the above technical solution, the protective cover can protect the needle head during transportation of the injection needle. When using the injection needle, the medical staff first removes the protective cover, then the medical staff draws the cosmetic material into the needle barrel, then the medical staff breaks off a section of the protective cover on the two sides of the first ring groove at the appropriate position by force, and then the broken protective cover is sleeved on the needle head again. At this time, the distance between the broken protective cover and the liquid outlet of the needle head is the distance that the needle head can be inserted into the skin. By this way, the depth of the needle head inserted into the skin is limited, thereby preventing the needle head from being inserted too deep into the skin to damage the muscle and nerve.
[0008] Preferably, the protective cover comprises a first cover body and a second cover body, the first cover body is threadedly connected on the needle plug, and the plurality of first ring grooves are formed on the second cover body.
[0009] By adopting the technical scheme, when the broken protective cover is re-installed on the needle, if the distance between the first cover body and the needle is too large or too small, the distance between the broken first cover body and the liquid outlet of the needle can be adjusted by rotating the second cover body to change the connecting position of the second cover body and the needle plug, so that the needle can be inserted into the injection position of the predetermined cosmetic material of the skin.
[0010] Preferably, a first insertion hole is formed on one side end face of the needle plug, the nipple is inserted into the first insertion hole, a first column is arranged in the first insertion hole, the first column is opposite to the liquid outlet of the nipple, a first liquid inlet is formed on the side wall of the first column in a direction perpendicular to the axis of the first column, a second insertion hole is formed on the side end face of the needle plug away from the needle cylinder in the axial direction of the first column, the second insertion hole is communicated with the first liquid inlet, and the needle is inserted into the second insertion hole.
[0011] By adopting the technical scheme, when the cosmetic material such as botulinum toxin enters the first insertion hole from the nipple, it will collide with the first column, the side wall of the first insertion hole, and the top wall of the first insertion hole, and then flow into the injection needle through the first liquid inlet and be injected into the skin through the injection needle. When the cosmetic material collides with the first column and the side wall of the first insertion hole, the flow rate is reduced, so that the injection speed of the cosmetic material such as botulinum toxin is slowed down, thereby preventing the cosmetic material from damaging nerves and muscles due to too fast injection.
[0012] Preferably, the first liquid inlet is located on the side of the first column close to the nipple.
[0013] By adopting the technical scheme, most of the material collides with the top wall of the first insertion hole after colliding with the side wall of the first insertion hole. By arranging the first liquid inlet on the side of the first column close to the nipple, the material flowing to the top wall of the first insertion hole collides again before entering the first liquid inlet, further slowing down the flow rate of the cosmetic material.
[0014] Preferably, a cover is sleeved and slidably connected outside the first column, the cover blocks the first insertion hole, an elastic member is arranged in the first insertion hole, one end of the elastic member is connected with the side wall of the first insertion hole away from the nipple, the other end of the elastic member is connected with the cover, and the cover is always located on the side of the first liquid inlet away from the nipple.
[0015] By adopting the technical scheme, when the medical staff presses the piston shaft of the needle cylinder with too large or too small force, the injection flow rate of the cosmetic material is changed, when the flow rate of the cosmetic material entering the first insertion hole is large, the impact force of the cosmetic material on the cover is large, thereby driving the cover to move away from the first liquid inlet, the distance between the cover and the first liquid inlet is large, the flow space of the cosmetic material in the first insertion hole is large, thereby the kinetic energy of the cosmetic material is consumed, the function of reducing the flow rate of the cosmetic material entering the first liquid inlet is achieved. When the flow rate of the cosmetic material is small, the impact force of the cosmetic material on the cover is small, at this time, the distance between the cover and the first liquid inlet is small, the flow space of the cosmetic material in the first insertion hole is reduced, the flow rate loss of the cosmetic material entering the first liquid inlet is reduced, therefore, the cooperation of the elastic member and the cover can adjust the flow rate of the cosmetic material to a certain extent, so that the flow rate of the cosmetic material during injection is maintained in an interval, preventing the phenomenon of nerve and muscle damage caused by too much injection and the phenomenon of poor cosmetic effect caused by too little injection.
[0016] Preferably, the elastic member is a spring, and the spring is sleeved on the first column body.
[0017] By adopting the technical scheme, when the flow rate of the cosmetic material changes, the impact force of the cosmetic material on the cover changes, the compression degree of the spring is further changed, thereby the distance between the cover and the first liquid inlet is changed.
[0018] Preferably, a drainage cavity is formed between the second cover body and the needle plug, a drainage passage is formed in the side wall of the first insertion hole and communicates with the drainage cavity, and the passage opening of the drainage passage, which communicates with the first insertion hole, is close to the side wall of the first insertion hole away from the nipple.
[0019] By adopting the technical scheme, if the medical staff accidentally presses the piston shaft of the needle cylinder with too large force, the cover will move to the side of the drainage passage away from the nipple, at this time, part of the cosmetic material can enter the drainage cavity through the drainage passage, thereby reducing the flow rate of the cosmetic material entering the first liquid inlet.
[0020] Preferably, a first connecting piece is arranged on the nipple, a second connecting piece is arranged on the side wall of the first insertion hole, and the first connecting piece and the second connecting piece are clamped and matched.
[0021] By adopting the technical scheme, the connection stability of the needle plug and the nipple is strengthened.
[0022] Preferably, the first connecting piece is an annular protrusion arranged on the outer wall of the nipple, and the second connecting piece is a second annular groove formed in the side wall of the first insertion hole.
[0023] By adopting the technical scheme, the needle is inserted into the nipple, the nipple is inserted into the first insertion hole, and the annular protrusion is inserted into and clamped into the second annular groove, so that the connection between the needle and the nipple is strengthened.
[0024] The technical effects of the utility model mainly lie in the following aspects:
[0025] 1、 the utility model discloses a plurality of second recess and a plurality of through -hole cooperation make first cover body can be broken according to demand, then the first cover body and second cover body after breaking are connected to needle bolt can limit the depth of needle insertion into the skin;
[0026] 2、 the utility model discloses the cooperation of the cover of spring to the injection speed of cosmetic material is adjusted, make the injection amount of cosmetic material is gentle and stable;
[0027] 3、 the utility model discloses setting up drainage channel to prevent the flow rate of cosmetic material is too big. DRAWINGS
[0028] Figure 1 It is the structure schematic drawing of the injection needle of the application.
[0029] Figure 2 It is the structure schematic drawing of the first cover body in he1 after breaking a part and being reconnected to the needle bolt through the second cover body.
[0030] Figure 3 It is Figure 1 the local enlarged view of A in he.
[0031] Figure 4 It is Figure 2 the local sectional view of the injection needle along B-B line in he.
[0032] Figure 5 It is Figure 4 the local enlarged view of C in he.
[0033] Fig. 1, needle cylinder;11, nipple;2, needle;21, injection needle;22, needle bolt;23, first insertion hole;24, first column body;25, first liquid inlet;26, second insertion hole;27, drainage channel;3, protective cover;31, first cover body;32, second cover body;33, first annular groove;34, through slot;4, cover;5, elastic member;51, spring;6, drainage cavity;7, first connecting piece;71, annular protrusion;8, second connecting piece;82, second annular groove. DETAILED DESCRIPTION
[0034] The application will be further described in detail below with reference to the drawings, so that the technical scheme of the application is easier to understand and master.
[0035] Refer to Figure 1 ,Figure 2 、 Figure 4 、 Figure 5 The disposable sterile injection needle 21 of the embodiment comprises a needle barrel 1 and a needle head 2. The front end of the needle barrel 1 is provided with a nipple 11. The needle head 2 comprises an injection needle 21 and a needle plug 22. The needle plug 22 is provided with a first insertion hole 23 on the side end face close to the needle barrel 1. The nipple 11 is inserted into the first insertion hole 23. The first insertion hole 23 is provided with a first column 24. The first column 24 is opposite to the liquid outlet of the nipple 11. The side wall of the first column 24 is provided with a first liquid inlet 25 along the direction perpendicular to the axis of the first column 24. The first liquid inlet 25 is located on the side of the first column 24 close to the nipple 11. The side end face of the needle plug 22 away from the needle barrel 1 is provided with a second insertion hole 26 along the axis direction of the first column 24. The bottom end of the second insertion hole 26 is located in the first column 24. The second insertion hole 26 is communicated with the first liquid inlet 25. The needle head 2 is inserted into the second insertion hole 26.
[0036] Referring to Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 The first column 24 is externally sleeved and slidably connected along the axis direction of the first column 24 with a cover 4. The cover 4 blocks the first insertion hole 23. The first insertion hole 23 is provided with an elastic member 5. The elastic member 5 is a spring 51 sleeved on the first column 24. One end of the spring 51 is connected with the side wall of the first insertion hole 23 away from the nipple 11. The other end of the elastic member 5 is connected with the cover 4. The cover 4 is always located on the side of the first liquid inlet 25 away from the nipple 11.
[0037] Referring to Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 When the cosmetic material such as botulinum toxin enters the first insertion hole 23 from the nipple 11, it will collide with the first column 24, the side wall of the first insertion hole 23 and the cover 4, thereby slowing down the injection speed of the cosmetic material such as botulinum toxin, preventing the cosmetic material from being injected too fast to damage the nerves and muscles. The injection speed of the cosmetic material is adjusted by the cooperation of the spring 51 and the cover 4, so that the injection amount of the cosmetic material is smooth and stable.
[0038] Referring to Figures 1-5, the protective cover 3 is sleeved on the needle bolt 22 for protecting the injection needle 21, and the protective cover 3 comprises a first cover body 31 and a second cover body 32. The first cover body 31 is provided with a plurality of first ring grooves 33, which are equidistantly arranged on the first cover body 31 along the length direction of the first cover body 31, and a plurality of through grooves 34 are formed in the groove walls of the first ring grooves 33 and penetrate through the first cover body 31. The second cover body 32 is threadedly connected to the needle bolt 22, and a drainage cavity 6 is formed between the second cover body 32 and the needle bolt 22. A drainage passage 27 is formed in the side wall of the first insertion hole 23 and communicates with the drainage cavity 6, and the passage opening of the drainage passage 27, which communicates with the first insertion hole 23, is close to the side wall of the first insertion hole 23 away from the nipple 11. When the injection needle 21 is not used, the passage opening of the drainage passage 27, which communicates with the first insertion hole 23, is located on the side of the cover 4 away from the syringe 1.
[0039] With reference to Figure 1 and Figure 2 , when the injection needle 21 is used, the medical staff first takes the protective cover 3, and then the medical staff draws the cosmetic material into the syringe 1. Then, the medical staff forces the first cover body 31 on both sides of the first ring groove 33 at a suitable position to break off a section of the end of the first cover body 31 away from the second cover body 32, and then threadedly connects the second cover body 32 to the needle bolt 22. At this time, the distance between the broken first cover body 31 and the liquid outlet of the needle 2 is the distance that the needle 2 can be inserted into the skin. In this way, the depth of the needle 2 inserted into the skin is limited, so as to prevent the needle 2 from being inserted too deep into the skin and damaging the muscle and nerve.
[0040] With reference to Figure 4 and Figure 5 , when the cosmetic material such as botulinum toxin is injected, the cosmetic material enters the first insertion hole 23 through the nipple 11 and collides with the cover 4 to drive the spring 51 to deform. The spring 51 and the cover 4 cooperate to adjust the flow rate of the cosmetic material. If the doctor accidentally presses the piston shaft of the syringe 1 with too much force, the cover 4 will move to the side of the drainage passage 27 away from the nipple 11. At this time, part of the cosmetic material can be discharged into the drainage cavity 6 through the drainage passage 27, so as to weaken the flow rate of the cosmetic material entering the first liquid inlet 25.
[0041] Of course, the above is only a typical example of the present application, in addition to this, the present application can have other various specific embodiments, and any technical solutions formed by equivalent replacement or equivalent transformation shall fall within the scope of the present application.
Claims
1. A disposable sterile injection needle, comprising a syringe (1) and a needle (2), wherein the syringe (1) has a nipple (11) at its front end, the needle (2) comprises an injection needle (21) and a plug (22), the plug (22) being connected to the nipple (11), and a protective cover (3) for protecting the injection needle (21) is fitted onto the plug (22), characterized in that: The protective cover (3) is provided with a plurality of first annular grooves (33), which are equidistantly arranged on the protective cover (3) along the length direction of the protective cover (3), and a plurality of through grooves (34) penetrating the protective cover (3) are provided on the groove walls of the plurality of first annular grooves (33).
2. The disposable sterile injection needle according to claim 1, characterized in that: The protective cover (3) includes a first cover (31) and a second cover (32). The first cover (31) is threaded onto the pin (22), and a plurality of first annular grooves (33) are formed on the second cover (32).
3. A disposable sterile injection needle according to claim 2, characterized in that: A first insertion hole (23) is opened on one end face of the needle plug (22), the nipple (11) is inserted into the first insertion hole (23), a first column (24) is provided in the first insertion hole (23), the first column (24) is directly opposite the liquid outlet of the nipple (11), a first liquid inlet (25) is opened on the side wall of the first column (24) along the direction perpendicular to the axis of the first column (24), a second insertion hole (26) is opened on the end face of the needle plug (22) away from the syringe (1) along the axis of the first column (24), the second insertion hole (26) is connected to the first liquid inlet (25), and the needle (2) is inserted into the second insertion hole (26).
4. A disposable sterile injection needle according to claim 3, characterized in that: The first liquid inlet (25) is located on the side of the first column (24) near the nipple (11).
5. A disposable sterile injection needle according to claim 4, characterized in that: A cover (4) is fitted and slidably connected to the outside of the first column (24). The cover (4) blocks the first insertion hole (23). An elastic element (5) is provided inside the first insertion hole (23). One end of the elastic element (5) is connected to the side wall of the first insertion hole (23) away from the nipple (11). The other end of the elastic element (5) is connected to the cover (4). The cover (4) is always located on the side of the first liquid inlet (25) away from the nipple (11).
6. A disposable sterile injection needle according to claim 4, characterized in that: The elastic element (5) is a spring (51), which is sleeved on the first column (24).
7. A disposable sterile injection needle according to claim 5, characterized in that: A drainage cavity (6) is formed between the second cover (32) and the needle plug (22). A drainage channel (27) communicating with the drainage cavity (6) is provided on the side wall of the first insertion hole (23). The drainage channel (27) is connected to the first insertion hole (23) on the side wall of the first insertion hole (23) away from the nipple (11).
8. A disposable sterile injection needle according to claim 3, characterized in that: The nipple (11) is provided with a first connector (7), and the side wall of the first insertion hole (23) is provided with a second connector (8). The first connector (7) and the second connector (8) are engaged.
9. A disposable sterile injection needle according to claim 8, characterized in that: The first connector (7) is an annular protrusion (71) provided on the outer wall of the nipple (11), and the second connector (8) is a second annular groove (82) opened on the side wall of the first insertion hole (23).