Injection device for compounding hydroxyapatite and hyaluronic acid

Abstract

The utility model relates to an injection device for compounding hydroxyapatite and hyaluronic acid. The injection device comprises a shell, a first injector stored with hydroxyapatite, a second injector stored with hyaluronic acid, a mixer and a needle mounted at a nipple of the mixer; the mixer comprises a shell, a driving stirring shaft, a driven stirring shaft and a driving mechanism; the rotation direction of the driven stirring shaft is opposite to that of the driving stirring shaft, and the driven stirring shaft and the driving stirring shaft both promote liquid in the shell to flow to each other; a first liquid inlet and a second liquid inlet which are opposite are formed in the rear end of the shell, and a nipple is arranged at the front end of the shell. According to the injection device, uniform mixing of the hydroxyapatite and the hyaluronic acid can be achieved, the usage amount of the hydroxyapatite and the hyaluronic acid does not need to be pre-judged before mixing, it does not need to be guaranteed that a certain amount of mixed liquid is left, and waste of the hydroxyapatite and the hyaluronic acid in an operation is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical cosmetic appliances, in particular to an injection device of compound hydroxyapatite and hyaluronic acid. Background Art

[0002] The combination of hydroxyapatite (HAP) and hyaluronic acid is often used in medical aesthetics projects such as facial filling, body shaping, and wrinkle removal. Its advantages include:

[0003] Biocompatibility: Hydroxyapatite is the main inorganic component of human bones, has excellent biocompatibility, and is not likely to cause immune response or allergy.

[0004] Persistence: HAP microspheres can act as a scaffold to support the growth of fibroblasts and gradually replace the original carrier, while producing collagen fibers to provide a longer-term filling effect.

[0005] Promote collagen regeneration: After HAP microspheres are injected subcutaneously, they can stimulate the host's immune response, promote collagen deposition, and increase skin thickness and elasticity.

[0006] Reversibility: When hyaluronic acid is used as a space-holder, it is highly reversible after injection and can be dissolved using hyaluronic acid enzymes, which improves the safety and tolerance of the injection.

[0007] Wide range of applications: The mixed filler of HAP and hyaluronic acid can be used for filling multiple parts of the face, including deep and superficial injections, to meet the treatment needs of different skin layers.

[0008] Safety: The complications of HAP microspheres are relatively mild. The most common adverse reactions include mild pain, erythema, ecchymosis, etc., and the incidence rate is low.

[0009] Significant results: Compared with hyaluronic acid alone, HAP mixed hyaluronic acid fillers show more significant clinical results in applications such as nasolabial fold correction.

[0010] Non-inflammatory regeneration: After HAP injection, the body's immune factor content is significantly lower than that of polylactic acid materials. It is non-inflammatory regeneration, the regeneration mechanism is safer, and it effectively reduces complications and adverse reactions after injection.

[0011] Duration: The effect of HAP microspheres lasts longer, generally lasting 12-18 months or even longer. Compared with short-acting hyaluronic acid products, the frequency of injections is reduced.

[0012] At present, the compounding of hydroxyapatite and hyaluronic acid is mainly achieved by connecting two syringes that suck hydroxyapatite and hyaluronic acid respectively with a double female Luer connector, and injecting back and forth. The amount of hydroxyapatite and hyaluronic acid to be used is determined in advance, and a certain amount of surplus is ensured, which easily leads to waste of hydroxyapatite and hyaluronic acid in actual operation. Utility Model Content

[0013] In view of the above problems, the present utility model is proposed to provide an injection device of compound hydroxyapatite and hyaluronic acid that overcomes the above problems or at least partially solves the above problems.

[0014] The injection device for compounding hydroxyapatite and hyaluronic acid comprises a shell, a first syringe storing hydroxyapatite, a second syringe storing hyaluronic acid, a mixer, and a needle mounted on the nipple of the mixer; the first syringe, the second syringe, and the mixer are all mounted in the shell; the mixer comprises a shell, an active stirring shaft, a driven stirring shaft, and a driving mechanism; the active stirring shaft is axially provided with a plurality of first blade groups located in the shell, each of which is composed of a plurality of flat first blades connected to corresponding segments of the active stirring shaft, and a virtual symmetry plane of each first blade passes through a virtual axis of the active stirring shaft; the driven stirring shaft is axially provided with a plurality of second blade groups located in the shell, each of which is composed of a plurality of flat second blades connected to corresponding segments of the active stirring shaft, and each The virtual symmetry planes of the second blades all pass through the virtual axis of the driven stirring shaft; the inner wall surface of the front end of the shell is concave to form two positioning holes that respectively cooperate with the front ends of the active stirring shaft and the driven stirring shaft, and the rear end of the shell is formed with two through holes for the rear ends of the active stirring shaft and the driven stirring shaft to extend out of the shell respectively; the driving mechanism is used to drive the active stirring shaft and the driven stirring shaft to rotate, and the rotation direction of the driven stirring shaft is opposite to the rotation direction of the active stirring shaft, and the two promote the liquid in the shell to flow to each other during rotation; the rear end of the shell is formed with a first liquid inlet and a second liquid inlet relative to each other, and the front end of the shell is provided with a nipple; the hydroxyapatite in the first syringe can enter the shell through the first pipe and the first liquid inlet, and the hyaluronic acid in the second syringe can enter the shell through the second pipe and the second liquid inlet.

[0015] In one embodiment, the number of first blades included in each of the first blade groups is the same as the number of second blades included in each of the second blade groups, and the shapes and sizes of the first blades and the second blades are the same.

[0016] In one embodiment, the transverse outer peripheral contour of the shell is in the shape of two identical major arcs butted together.

[0017] In one embodiment, the first blade groups and the second blade groups are arranged alternately in sequence from the front end of the shell to the rear end of the shell.

[0018] In one embodiment, the number of the first blade groups and the second blade groups are the same, and the first blade groups and the second blade groups are arranged opposite to each other.

[0019] In one embodiment, the driven stirring shaft is connected to the active stirring shaft via a transmission mechanism.

[0020] In one embodiment, the piston rod of the first syringe and the piston rod of the second syringe are driven by the same push plate to move synchronously.

[0021] In one embodiment, the peripheral wall of each through hole is concave to form two annular installation grooves, and a sealing ring is arranged in the annular installation groove.

[0022] The utility model of the injection device for compounding hydroxyapatite and hyaluronic acid can realize uniform mixing of hydroxyapatite and hyaluronic acid. There is no need to mix them in advance before the injection operation, there is no need to pre-determine the usage of hydroxyapatite and hyaluronic acid before mixing, and there is no need to ensure that the mixed liquid has a certain surplus, which effectively reduces the waste of hydroxyapatite and hyaluronic acid during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0024] Figure 1 This is a structural schematic diagram of Embodiment 1 of an injection device for compounding hydroxyapatite and hyaluronic acid according to the utility model;

[0025] Figure 2 for Figure 1 Schematic diagram of the structure of the mixer;

[0026] Figure 3 for Figure 1 A cross-sectional view of the mixer;

[0027] Figure 4 This is a schematic structural diagram of a second embodiment of an injection device for compounding hydroxyapatite and hyaluronic acid according to the utility model;

[0028] Figure 5 for Figure 4 Schematic diagram of the structure of the mixer;

[0029] Figure 6 for Figure 4 Cross-sectional view of the mixer.

[0030] Explanation of the accompanying drawings: 1. housing; 2. first syringe; 3. second syringe; 4. mixer; 5. needle; 6. housing; 7. active stirring shaft; 8. driven stirring shaft; 9. driving mechanism; 10. first blade group; 11. first blade; 12. second blade group; 13. second blade; 14. positioning hole; 15. through hole; 16. annular mounting groove; 17. sealing ring; 18. first gear; 19. second gear; 20. third gear; 21. first liquid inlet; 22. second liquid inlet; 23. first pipeline; 24. second pipeline; 25. push plate. DETAILED DESCRIPTION

[0031] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, but cannot be understood as limiting the utility model. Ordinary technicians in this field can make various changes, modifications, substitutions and variations to these embodiments without departing from the principles and purpose of the utility model. The scope of the utility model is defined by the claims and their equivalents.

[0032] The terms "center", "longitudinal", "lateral", "length", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like mentioned or may be mentioned in the description of the present invention indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In addition, the terms "include", "comprises" and any variations thereof are intended to cover non-exclusive inclusions.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] A device for injecting compound hydroxyapatite and hyaluronic acid according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0036] See also Figure 1 According to an embodiment of the utility model, an injection device for compounding hydroxyapatite and hyaluronic acid comprises a housing 1, a first syringe 2 storing hydroxyapatite, a second syringe 3 storing hyaluronic acid, a mixer 4, and a needle 5 installed at the nipple of the mixer 4. The first syringe 2, the second syringe 3 and the mixer 4 are all installed in the housing 1. The mixer 4 is provided with a nipple, which can pass through the housing 1 to facilitate the installation of the needle 5. The hydroxyapatite in the first syringe 2 and the hyaluronic acid in the second syringe 3 are injected into the mixer 4, and the hydroxyapatite and hyaluronic acid are mixed evenly by the mixer 4, and then the compounded hydroxyapatite and hyaluronic acid are injected into the beauty part of the beauty seeker through the needle 5, such as injecting the compounded hydroxyapatite and hyaluronic acid into the eyebrow arch to improve the aging of the eye area.

[0037] See now Figure 2 The mixer 4 includes a housing 6, an active stirring shaft 7, a driven stirring shaft 8, and a driving mechanism 9. The active stirring shaft 7 and the driven stirring shaft 8 are both used to stir the mixed solution composed of hydroxyapatite and hyaluronic acid in the housing 6.

[0038] Specifically, the active stirring shaft 7 is axially provided with a plurality of first blade groups 10 located in the shell 6, and each first blade group 10 is composed of a plurality of flat first blades 11 connected to corresponding segments of the active stirring shaft 7. The virtual symmetry planes of each first blade 11 pass through the virtual axis of the active stirring shaft 7. Therefore, when each first blade 11 rotates, the force generated mainly causes the mixed liquid to move radially, thereby reducing or even avoiding the injection resistance caused by stirring.

[0039] The driven stirring shaft 8 is axially provided with a plurality of second blade groups 12 located in the shell 6, each second blade group 12 is composed of a plurality of flat second blades 13 connected to corresponding segments of the active stirring shaft 7, and the virtual symmetry planes of each second blade 13 pass through the virtual axis of the driven stirring shaft 8. Similarly, when each second blade 13 rotates, the force generated mainly causes the mixed liquid to move radially, thereby reducing or even avoiding the injection resistance caused by stirring.

[0040] Preferably, the number of first blades 11 of each first blade group 10 is the same as the number of second blades 13 of the second blade group 12, and the shapes and sizes of the first blades 11 and the second blades 13 are the same. The first blades 11 of each first blade group 10 are distributed in an annular array with the active stirring shaft 7 as the center, and the second blades 13 of each second blade group 12 are distributed in an annular array with the driven stirring shaft 8 as the center.

[0041] The inner wall surface of the front end of the shell 6 is concave to form two positioning holes 14 that respectively cooperate with the front end of the active stirring shaft 7 and the front end of the driven stirring shaft 8. The diameters of the two positioning holes 14 are slightly larger than the outer diameters of the corresponding front ends of the active stirring shaft 7 and the driven stirring shaft 8. The radial movement of the front ends of the active stirring shaft 7 and the driven stirring shaft 8 is limited by the positioning holes 14.

[0042] The rear end of the housing 6 is formed with two through holes 15 for the rear ends of the active stirring shaft 7 and the driven stirring shaft 8 to extend out of the housing 6. The inner diameters of the two through holes 15 are slightly larger than the outer diameters of the corresponding segments of the active stirring shaft 7 and the driven stirring shaft 8 in the through holes 15. The through holes 15 limit the radial movement of the rear ends of the active stirring shaft 7 and the driven stirring shaft 8. The positioning holes 14 and the through holes 15 cooperate with each other to enable the active stirring shaft 7 and the driven stirring shaft 8 to rotate in translation.

[0043] Preferably, the peripheral wall of each through hole 15 is concavely formed with two annular mounting grooves 16, and a sealing ring 17 is arranged in the annular mounting groove 16. The sealing ring 17 is sleeved on the corresponding active stirring shaft 7 and the driven stirring shaft 8 to prevent the mixed liquid in the mixer 4 from leaking out from the gap between the through hole 15 and the active stirring shaft 7 or the driven stirring shaft 8.

[0044] The driving mechanism 9 is used to drive the active stirring shaft 7 and the driven stirring shaft 8 to rotate. Specifically, in the present embodiment, the driving mechanism 9 directly drives the active stirring shaft 7 to rotate. The driving mechanism 9 may include a motor, the output end of the motor is sleeved with a first gear 18, the rear end of the active stirring shaft 7 is sleeved with a second gear 19, the second gear 19 is meshed with the first gear 18, when the motor rotates, its power is transmitted to the active stirring shaft 7 through the first gear 18 and the second gear 19, driving the active stirring shaft 7 to rotate. The driven stirring shaft 8 may be connected to the active stirring shaft 7 through a transmission mechanism, for example, the rear end of the driven stirring shaft 8 is sleeved with a third gear 20, when the motor rotates, its power is transmitted to the driven stirring shaft 8 through the first gear 18, the second gear 19, and the third gear 20, driving the driven stirring shaft 8 to rotate. That is, the transmission mechanism may be composed of the second gear 19 and the third gear 20.

[0045] The rotation direction of the driven stirring shaft 8 is opposite to that of the active stirring shaft 7, and both of them promote the liquid in the housing 6 to flow to each other during rotation. That is, during the rotation of the driven stirring shaft 8, the mixed liquid is promoted to flow to the active stirring shaft 7, and during the rotation of the active stirring shaft 7, the mixed liquid is promoted to flow to the driven stirring shaft 8. The mixed liquid moves from the rear end to the front end, that is, during the injection process, the active stirring shaft 7 and the driven stirring shaft 8 rotate together to promote the mixed liquid to move back and forth to mix or generate flocculent mixing multiple times, so that the mixing is more uniform.

[0046] Preferably, if Figure 3 The transverse outer peripheral contour of the shell 6 is shown in the shape of two identical major arcs butted together to adapt to the rotation of the active stirring shaft 7 and the rotation of the driven stirring shaft 8. The radius of the major arc is slightly larger than the rotation radius of the active stirring shaft 7 and the rotation radius of the driven stirring shaft 8.

[0047] In this embodiment, the first blade group 10 and the second blade group 12 are arranged alternately in sequence from the front end of the shell 6 to the rear end of the shell 6. That is, from the front end of the shell 6 to the rear end of the shell 6, the arrangement can be the second blade group 12, the first blade group 10, the second blade group 12, the first blade group 10, the second blade group 12, the first blade group 10, the second blade group 12, the first blade group 10, the second blade group 12. Of course, it is also possible to adopt the arrangement from the front end of the shell 6 to the rear end of the shell 6, the first blade group 10, the second blade group 12, the first blade group 10, the second blade group 12, the first blade group 10, the second blade group 12, or other suitable arrangements, which are not listed here one by one. In this embodiment, the mixed liquid moves from the rear end to the front end, that is, during the injection process, the active stirring shaft 7 and the driven stirring shaft 8 rotate together to cause the mixed liquid to move back and forth and mix, so that the mixing is more uniform.

[0048] In another embodiment, if Figure 5As shown, the number of the first blade group 10 and the second blade group 12 are the same, and the first blade groups 10 and the second blade groups 12 are arranged opposite to each other. In this embodiment, the active stirring shaft 7 and the driven stirring shaft 8 rotate together to cause the mixed liquid to generate flocculation mixing multiple times, making the mixing more uniform.

[0049] Now back to Figure 2 , the rear end of the shell 6 is formed with a first liquid inlet 21 and a second liquid inlet 22 which are opposite to each other, and the front end of the shell 6 is provided with a nipple. The hydroxyapatite in the first syringe 2 can enter the shell 6 through the first pipe 23 and the first liquid inlet 21, and the hyaluronic acid in the second syringe 3 can enter the shell 6 through the second pipe 24 and the second liquid inlet 22. A docking device that cooperates with the nipple of the first syringe 2 can be provided at the liquid inlet of the first pipe 23, and a docking device that cooperates with the nipple of the second syringe 3 can be provided at the liquid inlet of the second pipe 24. The piston rod of the first syringe 2 and the piston rod of the second syringe 3 can be driven to move synchronously by the same push plate 25, that is, the injection of the mixed solution is achieved by pushing the push plate 25 forward. The push plate 25 can be pushed forward by the doctor, or a driving mechanism 9 can be provided to drive it to move, which is not limited in this embodiment.

[0050] The utility model of the injection device for compounding hydroxyapatite and hyaluronic acid can realize uniform mixing of hydroxyapatite and hyaluronic acid. There is no need to mix them in advance before the injection operation, there is no need to pre-determine the usage of hydroxyapatite and hyaluronic acid before mixing, and there is no need to ensure that the mixed liquid has a certain surplus, which effectively reduces the waste of hydroxyapatite and hyaluronic acid during the operation.

Claims

1. An injection device for compounding hydroxyapatite and hyaluronic acid, characterized in that: The invention comprises a housing, a first syringe storing hydroxyapatite, a second syringe storing hyaluronic acid, a mixer, and a needle installed on the nipple of the mixer; the first syringe, the second syringe, and the mixer are all installed in the housing; the mixer comprises a shell, an active stirring shaft, a driven stirring shaft, and a driving mechanism; The active stirring shaft is provided with a plurality of first blade groups located in the shell along the axial direction, each first blade group is composed of a plurality of flat first blades connected to the corresponding segments of the active stirring shaft, and the virtual symmetry planes of each first blade pass through the virtual axis of the active stirring shaft; the driven stirring shaft is provided with a plurality of second blade groups located in the shell along the axial direction, each second blade group is composed of a plurality of flat second blades connected to the corresponding segments of the active stirring shaft, and the virtual symmetry planes of each second blade pass through the virtual axis of the driven stirring shaft; the front end inner wall surface of the shell is concave to form two front ends respectively cooperating with the front ends of the active stirring shaft and the driven stirring shaft A positioning hole is formed at the rear end of the shell, and two through holes are formed for the rear ends of the active stirring shaft and the driven stirring shaft to extend out of the shell respectively; the driving mechanism is used to drive the active stirring shaft and the driven stirring shaft to rotate, and the rotation direction of the driven stirring shaft is opposite to the rotation direction of the active stirring shaft, and both of them cause the liquid in the shell to flow to each other during rotation; the rear end of the shell is formed with a first liquid inlet and a second liquid inlet relative to each other, and the front end of the shell is provided with a nipple; the hydroxyapatite in the first syringe can enter the shell through the first pipe and the first liquid inlet, and the hyaluronic acid in the second syringe can enter the shell through the second pipe and the second liquid inlet.

2. The injection device of compound hydroxyapatite and hyaluronic acid according to claim 1, characterized in that: The number of first blades included in each of the first blade groups is the same as the number of second blades included in each of the second blade groups, and the shapes and sizes of the first blades and the second blades are the same.

3. The injection device of compound hydroxyapatite and hyaluronic acid according to claim 2, characterized in that: The transverse outer peripheral contour of the shell is in the shape of two identical major arcs butted against each other.

4. The injection device of compound hydroxyapatite and hyaluronic acid according to claim 3, characterized in that: The first blade groups and the second blade groups are arranged alternately in sequence from the front end of the shell to the rear end of the shell.

5. The injection device of compound hydroxyapatite and hyaluronic acid according to claim 3, characterized in that: The number of the first blade groups and the second blade groups is the same, and the first blade groups and the second blade groups are arranged opposite to each other.

6. The injection device of compound hydroxyapatite and hyaluronic acid according to claim 4 or 5, characterized in that: The driven stirring shaft is connected to the active stirring shaft through a transmission mechanism.

7. The injection device of compound hydroxyapatite and hyaluronic acid according to claim 4 or 5, characterized in that: The piston rod of the first syringe and the piston rod of the second syringe are driven to move synchronously by the same push plate.

8. The injection device of compound hydroxyapatite and hyaluronic acid according to claim 4 or 5, characterized in that: The peripheral wall of each through hole is concave to form two annular installation grooves, and a sealing ring is arranged in the annular installation groove.

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