Cambered-surface multi-needle injection needle with soft base

Abstract

The invention relates to the technical field of medical beauty instruments, in particular to a soft-base cambered-surface multi-needle injection needle which comprises a multi-needle assembly, the multi-needle assembly comprises a liquid separation cavity, a liquid inlet is formed in the top of the liquid separation cavity, a flexible and tough soft base is arranged on the lower surface of the liquid separation cavity, and a plurality of needles are arranged in the soft base. The outer side of each needle is sleeved with a column sleeve, the upper ends of the needles are communicated with the liquid separation cavity, and the lower ends of the needles extend out of the column sleeves. According to the multi-needle injector, the fitting degree of the needle plane and the skin during multi-needle injection is effectively improved, so that the injection depth is more accurately controlled, and the adverse effect of the skin caused by excessive injection or insufficient injection is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of medical aesthetic devices, and in particular to a soft-base curved multi-needle injection needle. Background Art

[0002] As a common cosmetic injection therapy, water light needle has been widely popular in the market in recent years. It injects nutrients directly into the dermis of the skin to achieve multiple cosmetic effects such as improving skin tone, moisturizing, and shrinking pores. Multi-needle water light needle injects liquid containing nutrients into the dermis of the skin evenly through microneedles. These nutrients include but are not limited to hyaluronic acid, collagen, vitamins, etc. This injection method can quickly and effectively provide the skin with the necessary nutrients, promote skin metabolism, and improve skin quality.

[0003] Currently, most multi-needle hyaluronic acid injections on the market use a hard flat needle design. This design has the following problems during injection:

[0004] Insufficient fit: Due to the multiple curved surfaces and turning parts of facial skin, it is difficult for hard flat needles to completely fit the skin surface. This results in some needles being unable to accurately penetrate the dermis, thus affecting the injection and distribution of nutrients.

[0005] Uneven injection depth: Due to insufficient fit, the depth of the needle during injection will also be affected. Some needles may not penetrate deep enough to deliver nutrients to the dermis, while some needles may penetrate too deep and damage the subcutaneous tissue.

[0006] Uneven injection effect: Due to problems with fit and injection depth, the injection effect of multi-needle hydration injections is often uneven. Some areas may not be effective due to insufficient nutrient injection, while some areas may have adverse reactions due to excessive injection.

[0007] Therefore, a novel multi-needle injection needle is urgently needed to solve the defects of the prior art. Summary of the invention

[0008] The object of the present invention is to provide a soft-base curved multi-needle injection needle to solve the problems raised in the above-mentioned background technology.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A soft-base curved multi-needle injection needle comprises a multi-needle assembly, wherein the multi-needle assembly comprises a liquid separation chamber, a liquid inlet is arranged at the top of the liquid separation chamber, a flexible and tough soft base is arranged on the lower surface of the liquid separation chamber, a plurality of needles are arranged in the soft base, a column sleeve is arranged on the outer side of each needle, the upper end of the needle is connected with the liquid separation chamber, and the lower end of the needle extends out of the column sleeve.

[0011] Furthermore, the lower surface of the soft substrate is provided with transverse grooves and longitudinal grooves at equal distances, the transverse grooves and longitudinal grooves divide the soft substrate into a plurality of unit substrates, and each needle head and its outer column sleeve are arranged on a unit substrate.

[0012] Furthermore, a negative pressure interface is provided on the side of the soft base, a cavity is provided inside the soft base, and the cavity is connected with the negative pressure interface and all column sleeves.

[0013] Furthermore, a fixed interface is provided on the top of the liquid separation chamber, an outwardly protruding cylindrical boss is provided on the fixed interface, a boss sleeve is provided at the bottom of the liquid inlet, the boss sleeve is arranged on the outside of the boss, the boss sleeve is detachably and fixedly connected with a pair of limit plates, the limit plates are against the lower end surface of the boss, a sealing ring groove is provided on the circumferential outer wall of the boss, and a sealing ring is clamped on the sealing ring groove.

[0014] Furthermore, the liquid inlet is detachably connected to the liquid outlet of the syringe.

[0015] Furthermore, the external thread on the circumferential outer wall of the liquid inlet is threadedly connected to the internal thread on the circumferential inner wall of the liquid outlet.

[0016] Furthermore, a sealing gasket is provided on the top wall of the liquid outlet, and the upper end of the liquid inlet abuts against the sealing gasket.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the present invention, the flexibility and toughness of the soft base enable it to fit closely to multiple curved surfaces and turning parts of the facial skin, solving the problem that hard flat needles are difficult to fit, ensuring that each needle can accurately penetrate the dermis, and improving the accuracy of injection; due to the control of the needle insertion length by the column sleeve, the fit of the soft base and the assistance of negative pressure, the needle can maintain a consistent depth during injection, avoiding the problem of insufficient nutrient injection or subcutaneous tissue damage caused by uneven depth. The present invention effectively improves the fit between the needle plane and the skin during multi-needle injection, thereby more accurately controlling the injection depth and preventing adverse skin reactions caused by excessive or insufficient injection.

[0019] 2. The present invention provides a more stable connection between the liquid inlet and the liquid separation chamber through the close fit between the boss and the boss sleeve and the effective fixation of the limit plate; the sealing ring and the sealing gasket enhance the sealing performance of the connection, ensuring that the injection liquid does not leak during the injection process, thereby improving the accuracy and safety of the injection; the threaded connection between the liquid inlet and the liquid outlet of the syringe is convenient for disassembly, assembly and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the multi-needle assembly from the front side perspective;

[0021] Figure 2 It is a schematic diagram of the structure of the multi-needle assembly from the bottom perspective;

[0022] Figure 3 It is a schematic diagram of the structure of a multi-needle assembly and a syringe;

[0023] Figure 4 It is a schematic diagram of the structural decomposition of a multi-needle assembly and a syringe;

[0024] Figure 5 It is a structural schematic diagram of the connection position between the multi-needle assembly and the syringe;

[0025] Figure 6 It is a schematic diagram of the structure of the boss.

[0026] In the figure: 1. liquid separation chamber; 2. soft base; 3. unit base; 4. transverse groove; 5. longitudinal groove; 6. needle; 7. column sleeve; 8. negative pressure interface; 9. liquid inlet; 10. external thread; 11. boss sleeve; 12. boss; 13. sealing ring; 14. fixed interface; 15. limit plate; 16. internal thread; 17. syringe; 18. multi-needle assembly; 19. liquid outlet. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Example 1: Please refer to Figures 1-2 A soft-base curved multi-needle injection needle comprises a multi-needle assembly 18, wherein the multi-needle assembly 18 comprises a liquid separation chamber 1, wherein a liquid inlet 9 is arranged at the top of the liquid separation chamber 1, and a flexible and tough soft base 2 is arranged on the lower surface of the liquid separation chamber 1, wherein a plurality of needles 6 are arranged in the soft base 2, and a column sleeve 7 is arranged on the outer side of each needle 6, wherein the upper end of the needle 6 is connected to the liquid separation chamber 1, and the lower end of the needle 6 extends out of the column sleeve 7.

[0029] The lower surface of the soft substrate 2 is provided with transverse grooves 4 and longitudinal grooves 5 at equal distances. The transverse grooves 4 and longitudinal grooves 5 divide the soft substrate 2 into a plurality of unit substrates 3 . Each needle 6 and its outer column sleeve 7 are arranged on a unit substrate 3 .

[0030] A negative pressure interface 8 is provided on the side of the soft base 2 , and a cavity is provided inside the soft base 2 , which is connected with the negative pressure interface 8 and all the column sleeves 7 .

[0031] Working principle of this embodiment:

[0032] Liquid inlet and distribution: First, liquid containing nutrients is injected into the liquid separation chamber 1 through the liquid inlet 9. The liquid in the liquid separation chamber 1 is then evenly distributed to each needle through the connecting channels at the upper ends of each needle 6.

[0033] Arc surface fitting and injection: Since the soft base 2 is flexible and tough, it can better fit the multiple arc surfaces and turning parts of the facial skin. When the needle 6 penetrates the skin, the needle on each unit base 3 can independently adapt to the slight changes on the skin surface, ensuring that each needle can accurately penetrate the dermis. During injection, the end of the column sleeve 7 is close to the skin, and the needle tip of the needle 6 reaches the dermis. The column sleeve 7 plays a role in controlling the penetration depth of each needle 6 to be the same.

[0034] Negative pressure suction: Before or during injection, negative pressure is applied to the cavity inside the soft base 2 through the negative pressure interface 8. This negative pressure is transmitted to the surrounding of each needle 6 through all the column sleeves 7, which helps the skin to be slightly pulled toward the needle, improving the fit and accuracy of injection.

[0035] In this embodiment, the flexibility and toughness of the soft base 2 enable it to fit closely to multiple curved surfaces and turning parts of the facial skin, solving the problem that hard plane needles are difficult to fit, ensuring that each needle 6 can accurately penetrate the dermis, and improving the accuracy of injection; because the column sleeve 7 controls the insertion length of the needle 6, the fit of the soft base 2, and the assistance of negative pressure, the needle 6 can maintain a consistent depth during injection, avoiding the problem of insufficient nutrient injection or subcutaneous tissue damage caused by uneven depth. This embodiment effectively improves the fit between the needle plane and the skin during multi-needle injection, thereby more accurately controlling the injection depth and preventing adverse skin reactions caused by excessive or insufficient injection.

[0036] Example 2: Please refer to Figures 3 to 6 , a soft-base curved multi-needle injection needle, which differs from Example 1 in that a fixed interface 14 is provided at the top of the liquid separation chamber 1, and an outwardly protruding cylindrical boss 12 is provided on the fixed interface 14, and a boss sleeve 11 is provided at the bottom of the liquid inlet 9, and the boss sleeve 11 is sleeved on the outer side of the boss 12. The boss sleeve 11 is detachably fixedly connected with a pair of limiting plates 15, and the limiting plates 15 are against the lower end surface of the boss 12. A sealing ring groove is provided on the circumferential outer wall of the boss 12, and a sealing ring 13 is clamped on the sealing ring groove.

[0037] The liquid inlet 9 is detachably connected to the liquid outlet 19 of the syringe 17 .

[0038] The external thread 10 on the circumferential outer wall of the liquid inlet 9 is threadedly connected with the internal thread 16 on the circumferential inner wall of the liquid outlet 19 .

[0039] A sealing gasket is provided on the top wall of the liquid outlet 19, and the upper end of the liquid inlet 9 abuts against the sealing gasket.

[0040] Working principle of this embodiment:

[0041] A fixed interface 14 is provided at the top of the liquid separation chamber 1, on which a cylindrical boss 12 protruding outward is provided. The boss 12 is designed to cooperate with the boss sleeve 11 to achieve stable connection and positioning. A boss sleeve 11 is provided at the bottom of the liquid inlet 9, and a pair of limit plates 15 are detachably fixedly connected to fix the relative position of the boss sleeve 11 and the boss 12. The limit plate 15 rests on the lower end surface of the boss 12 to prevent the boss sleeve 11 from falling off. A sealing ring groove is provided on the circumferential outer wall of the boss 12, and a sealing ring 13 is clamped on the groove. The sealing ring 13 ensures the sealing between the boss 12 and the boss sleeve 11 to prevent liquid leakage. The external thread 10 on the circumferential outer wall of the liquid inlet 9 is screwed with the internal thread 16 on the circumferential inner wall of the liquid outlet 19 of the syringe 17, and the connection method is simple and reliable, and is easy to disassemble and clean. A sealing gasket is provided on the top wall of the liquid outlet 19. When the upper end of the liquid inlet 9 abuts against the sealing gasket, the sealing performance of the connection is further enhanced.

[0042] In this embodiment, the connection between the liquid inlet 9 and the liquid separation chamber 1 is more stable through the close fit between the boss 12 and the boss sleeve 11, and the effective fixation of the limit plate 15; the sealing ring 13 and the sealing gasket enhance the sealing performance of the connection, ensuring that the injection liquid does not leak during the injection process, thereby improving the accuracy and safety of the injection; the threaded connection method between the liquid inlet 9 and the liquid outlet 19 of the syringe 17 is convenient for disassembly, assembly and cleaning.

Claims

1. A soft-base curved multi-needle injection needle, characterized in that: Includes a multi-needle assembly (18): The multi-needle assembly (18) comprises a liquid separation chamber (1), the top of which is provided with a liquid inlet (9), the lower surface of which is provided with a flexible and tough soft base (2), a plurality of needles (6) being provided in the soft base (2), each needle (6) being provided with a column sleeve (7) on the outer side, the upper end of the needle (6) being connected to the liquid separation chamber (1), and the lower end of the needle (6) extending out of the column sleeve (7).

2. The soft-base curved multi-needle injection needle according to claim 1, characterized in that: The lower surface of the soft base (2) is provided with transverse grooves (4) and longitudinal grooves (5) at equal distances, the transverse grooves (4) and longitudinal grooves (5) divide the soft base (2) into a plurality of unit bases (3), and each needle head (6) and its outer column sleeve (7) are arranged on a unit base (3).

3. The soft-base curved multi-needle injection needle according to claim 1, characterized in that: A negative pressure interface (8) is provided on the side of the soft base (2), and a cavity is provided inside the soft base (2), and the cavity is connected to the negative pressure interface (8) and all column sleeves (7).

4. The soft-base curved multi-needle injection needle according to claim 1, characterized in that: The top of the liquid separation chamber (1) is provided with a fixed interface (14), and an outwardly protruding cylindrical boss (12) is provided on the fixed interface (14). The bottom of the liquid inlet (9) is provided with a boss sleeve (11), and the boss sleeve (11) is sleeved on the outer side of the boss (12). The boss sleeve (11) is detachably fixedly connected with a pair of limiting plates (15), and the limiting plates (15) are against the lower end surface of the boss (12). A sealing ring groove is provided on the circumferential outer wall of the boss (12), and a sealing ring (13) is clamped on the sealing ring groove.

5. The soft-base curved multi-needle injection needle according to claim 1, characterized in that: The liquid inlet (9) is detachably connected to the liquid outlet (19) of the syringe (17).

6. The soft-base curved multi-needle injection needle according to claim 5, characterized in that: The external thread (10) on the circumferential outer wall of the liquid inlet (9) is threadedly connected to the internal thread (16) on the circumferential inner wall of the liquid outlet (19).

7. The soft-base curved multi-needle injection needle according to claim 6, characterized in that: A sealing gasket is provided on the top wall of the liquid outlet (19), and the upper end of the liquid inlet (9) abuts against the sealing gasket.

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