Microneedle device for guiding tranexamic acid to remove vulva melanin

Abstract

The utility model relates to a microneedle device for guiding tranexamic acid to remove vulva melanin. The micro-needle injector comprises a front shell, a rear shell, a micro-needle seat, an injector, an injection driving device, a triggering device, a micro-needle driving device and an elastic resetting piece, the microneedle seat can move back and forth between a first position and a second position along the inner wall of the front shell; the front shell can move back and forth between a third position and a fourth position along the inner wall of the rear shell; the elastic reset piece is used for promoting the front shell to reset to the third position; the trigger device is used for generating a trigger signal when the front shell is located at the fourth position; the microneedle driving device is used for driving the microneedle seat to move to a first position after receiving the trigger signal, and then driving the microneedle seat to move to a second position after preset time; the injection driving device is used for continuously driving the injector to convey injection to the hollow microneedle within a preset time after the microneedle seat moves to the first position. The insertion and withdrawing of the hollow microneedle and the injection of the injection are automatically executed, and the injection operation is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of medical appliances, in particular to a micro-needle device for introducing tranexamic acid to remove vulvar melanin. Background Art

[0002] Some women pay special attention to their appearance in daily life and care about the whitening of every part of their body. However, as they age, the color of the female vulva will become darker. The main physiological reasons for the darkening of the vulva are as follows:

[0003] Pigmentation: Most women have pigmentation on their vulva, which is usually a normal physiological phenomenon. Due to individual differences, some women have lighter pigmentation, which is a light dark brown color; while some women have darker pigmentation, and the color of the vulva will be black. This pigmentation becomes more obvious after puberty due to the increased secretion of estrogen and progesterone.

[0004] Genetic factors: Dark vulva may also be related to genetics. If the parents have darker skin, then the color of their children's vulva may also be relatively darker.

[0005] Age: As they age, more than 60% of women will experience darkening of the pubic area due to localized pigmentation.

[0006] Life stress and mental tension: These factors may lead to changes in the endocrine environment, accelerating the speed and amount of local melanin deposition.

[0007] Tranexamic acid (tranexamic acid) is a popular ingredient in whitening injections on the market. It can inhibit the activity of tyrosinase and melanocytes, prevent melanin aggregation, and thus achieve a whitening effect. Microneedle injection is a new type of injection technology that uses a tiny needle. The pain of inserting it into the skin is much less than that of traditional injections, and it is less traumatic. Currently, there is no microneedle device for vulvar surgery. Utility Model Content

[0008] In view of the above problems, the present utility model is proposed to provide a microneedle device for introducing tranexamic acid to remove vulvar melanin, which overcomes the above problems or at least partially solves the above problems.

[0009] The microneedle device for introducing tranexamic acid to remove vulvar melanin comprises a housing, a microneedle seat, a syringe, an injection drive device, a trigger device, a microneedle drive device, an elastic reset member, and a power source; the syringe, the injection drive device, the trigger device, the microneedle drive device, and the power source are all installed in the housing; the housing comprises a front housing and a rear housing;

[0010] A plurality of hollow microneedles are arranged at the front end of the microneedle seat, and a liquid channel connected to the ends of each hollow microneedle is formed inside the microneedle seat; the liquid inlet of the liquid channel is located at the rear end of the microneedle seat, and the nipple of the syringe is connected to the liquid inlet of the liquid channel through a hose; the peripheral wall of the microneedle seat matches the inner wall of the front shell, and the microneedle seat can move forward and backward along the inner wall of the front shell between a first position and a second position; when the microneedle seat is in the first position, each hollow microneedle extends out of the front shell, and when the microneedle seat is in the second position, each hollow microneedle is retracted into the front shell; the peripheral wall of the microneedle seat is formed with a first limit block protruding outward, and the inner wall of the front shell is formed with a first limit groove that cooperates with the first limit block to limit the movement of the microneedle seat between the first position and the second position;

[0011] The front part of the rear shell is sleeved on the rear part of the front shell, and the front shell can move forward and backward along the inner wall of the rear shell between the third position and the fourth position; the outer peripheral wall of the rear part of the front shell is formed with a second limit block protruding outward, and the inner wall of the front part of the rear shell is formed with a second limit groove that cooperates with the second limit block and is used to limit the movement of the front shell between the third position and the fourth position; the elastic reset member acts on the front shell and the rear shell at the same time, so as to cause the front shell to reset to the third position;

[0012] The trigger device is used to generate a trigger signal when the front shell is in the fourth position; the microneedle drive device is used to drive the microneedle seat to move to the first position after receiving the trigger signal, and then drive the microneedle seat to move to the second position after a preset time; the injection drive device is used to continuously drive the syringe to deliver injection liquid to the hollow microneedle within a preset time after the microneedle seat moves to the first position.

[0013] In one embodiment, the injection drive device includes a motor, a screw, a nut seat, and a first control circuit, wherein the nut seat cooperates with the screw; a guide groove is formed inside the rear shell body and cooperates with the nut seat to prevent the nut seat from rotating, and the motor can drive the nut seat to move in the direction of the piston rod of the syringe through the screw to drive the syringe to deliver injection liquid to the hollow microneedle; the first control circuit is electrically connected to the trigger device and the motor.

[0014] In one embodiment, the microneedle driving device includes a magnet fixed to the rear end of the microneedle holder, an electromagnet arranged behind the magnet, and a second control circuit, wherein the second control circuit is connected to the trigger device, and the second control circuit is used to control the direction of the DC current input to the electromagnet; the magnetic field generated by the electromagnet being energized can drive the microneedle holder to move, and maintain it in the first position and the second position.

[0015] In one embodiment, the front wall and the rear wall of the first limiting groove are both provided with buffer pads.

[0016] In one embodiment, the elastic return member is a rubber ring, and the outer peripheral wall of the rear portion of the front shell body shrinks inward relative to the outer peripheral wall of the front portion of the front shell body. The elastic return member is arranged between the rear end of the front portion of the front shell body and the front end of the front portion of the rear shell body, and simultaneously abuts against the rear end of the front portion of the front shell body and the front end of the front portion of the rear shell body.

[0017] In one embodiment, the trigger device is a pressure sensor, a mounting seat is formed on the inner wall of the front portion of the rear shell, a pressure sensitive element of the pressure sensor is arranged on the mounting seat, and when the front shell moves to the fourth position, the rear end of the rear portion presses on the pressure sensitive element.

[0018] The utility model is a microneedle device for the introduction of tranexamic acid to remove vulvar melanin. The insertion and retraction of the hollow microneedles and the injection of the injection solution are all performed automatically, and the injection operation is simple. The microneedle drive device can drive each hollow microneedle to insert and retract quickly, reduce the pain of injection into the sensitive tissue of the vulva, and reduce the fear of the beauty seeker about the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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:

[0020] Figure 1 It is a schematic structural diagram of an exemplary embodiment of a microneedle device for introducing tranexamic acid to remove vulvar melanin according to the utility model;

[0021] Figure 2 It is a schematic diagram of the structure of a microneedle device for introducing tranexamic acid to remove vulvar melanin when the microneedle seat is in the second position and the front housing is in the fourth position;

[0022] Figure 3 It is a schematic diagram of the structure of a microneedle device for introducing tranexamic acid to remove vulvar melanin when the microneedle seat is in the first position and the front shell is in the fourth position.

[0023] Explanation of the accompanying drawings: 1. Shell; 2. Microneedle seat; 3. Syringe; 4. Elastic reset member; 5. Power supply; 6. Front shell; 7. Rear shell; 8. Hollow microneedle; 9. Hose; 10. Main channel; 11. Branch channel; 12. First limit block; 13. First limit groove; 14. Buffer pad; 15. Second limit block; 16. Second limit groove; 17. Mounting seat; 18. Pressure sensitive element; 19. Motor; 20. Screw; 21. Nut seat; 22. First control circuit; 23. Magnet; 24. Electromagnet; 25. Second control circuit. DETAILED DESCRIPTION

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] The following describes a microneedle device for introducing tranexamic acid to remove vulvar melanin according to an embodiment of the utility model with reference to the accompanying drawings.

[0029] See also Figures 1 to 3 According to an embodiment of the utility model, a microneedle device for introducing tranexamic acid to remove vulvar melanin comprises a housing 1, a microneedle seat 2, a syringe 3, an injection drive device, a trigger device, a microneedle drive device, an elastic reset member 4, and a power source 5. The syringe 3, the injection drive device, the trigger device, the microneedle drive device, and the power source 5 are all installed in the housing 1.

[0030] Specifically, the housing 1 includes a front housing 6 and a rear housing 7. The front housing 6 is connected to the rear housing 7 and can move forward and backward relative to the rear housing 7. The front housing 6 and the rear housing 7 are preferably made of plastic injection molding.

[0031] The front end of the microneedle holder 2 is provided with a plurality of hollow microneedles 8, the front ends of each hollow microneedle 8 are located on the same virtual plane, and the microneedle holder 2 can be divided into one, two or more microneedle groups arranged side by side, and each microneedle group contains the same number of hollow microneedles 8. This embodiment does not limit the number of hollow microneedles 8 and the number of microneedle groups.

[0032] A liquid channel connected to the end of each hollow microneedle 8 is formed inside the microneedle seat 2, and the liquid inlet of the liquid channel is located at the rear end of the microneedle seat 2. The nipple of the syringe 3 is connected to the liquid inlet of the liquid channel through a hose 9. The liquid channel can be composed of a main channel 10 and a branch channel 11. The injection liquid in the syringe 3, such as the injection liquid containing tranexamic acid, enters the corresponding hollow microneedle 8 through the hose 9, the main channel 10, and the branch channel 11 in sequence.

[0033] The peripheral wall of the microneedle holder 2 matches the inner wall of the front housing 6, and the microneedle holder 2 can move forward and backward between the first position and the second position along the inner wall of the front housing 6. When the microneedle holder 2 is in the first position, each hollow microneedle 8 extends out of the front housing 6, and when the microneedle holder 2 is in the second position, each hollow microneedle 8 is retracted into the front housing 6.

[0034] The peripheral wall of the microneedle holder 2 is formed with a first stopper 12 protruding outward, and the inner wall of the front housing 6 is formed with a first stopper groove 13 that cooperates with the first stopper 12 to limit the movement of the microneedle holder 2 between the first position and the second position. When the microneedle holder 2 moves forward to the first position, the first stopper 12 abuts against the front wall of the first stopper groove 13. Figure 3 In the state shown, when the microneedle holder 2 moves forward to the second position, the first limiting block 12 abuts against the rear wall of the first limiting groove 13, as shown in FIG. Figure 1 , Figure 2The number of the first limiting blocks 12 can be one, two, three, etc. The number of the first limiting grooves 13 is the same as that of the first limiting blocks 12. The number of the first limiting blocks 12 and the first limiting grooves 13 is not limited in this embodiment.

[0035] In order to eliminate the noise caused by the collision between the first limiting block 12 and the front wall and the rear wall of the first limiting groove 13, the front wall and the rear wall of the first limiting groove 13 can be provided with a buffer pad 14, which can be a rubber pad.

[0036] The front part of the rear shell 7 is sleeved on the rear part of the front shell 6, and the front shell 6 can move forward and backward along the inner wall of the rear shell 7 between the third position and the fourth position. The outer peripheral wall of the rear part of the front shell 6 is formed with a second limit block 15 protruding outward, and the inner wall of the front part of the rear shell 7 is formed with a second limit groove 16 that cooperates with the second limit block 15 to limit the movement of the front shell 6 between the third position and the fourth position. When the front shell 6 moves to the third position, the second limit block 15 abuts against the front wall of the second limit groove 16, as shown in FIG. Figure 1 In the state shown, when the front housing 6 moves to the fourth position, the second limiting block 15 abuts against the rear wall of the second limiting groove 16, as shown in FIG. Figure 2 , Figure 3 The number of the second limiting blocks 15 can be one, two, three, etc., and the number of the second limiting grooves 16 is the same as that of the second limiting blocks 15. The number of the second limiting blocks 15 and the second limiting grooves 16 is not limited in this embodiment.

[0037] The elastic reset member 4 acts on the front housing 6 and the rear housing 7 at the same time, and is used to cause the front housing 6 to reset to the third position. In the present embodiment, the elastic reset member 4 is a rubber ring. The outer peripheral wall of the rear of the front housing 6 shrinks inward relative to the outer peripheral wall of the front of the front housing 6. For example, the outer peripheral wall profile of the rear of the front housing 6 is the same as the outer peripheral wall profile of the front of the front housing 6, and the outer peripheral wall profile of the rear of the front housing 6 is larger than the outer peripheral wall profile of the front of the front housing 6. The elastic reset member 4 is arranged between the rear end of the front of the front housing 6 and the front end of the front of the rear housing 7, and simultaneously abuts against the rear end of the front of the front housing 6 and the front end of the front of the rear housing 7. In the process of the front housing 6 moving backward from the third position to the fourth position, the elastic reset member 4 shrinks and deforms, and after the external force acting on the front housing 6 is removed, the elastic reset member 4 gradually stretches and causes the front housing 6 to reset to the third position. It should be understood that the elastic reset member 4 can also be replaced by a compression spring or other structure that can cause the front housing 6 to reset to the third position.

[0038] The trigger device is used to generate a trigger signal when the front housing 6 is in the fourth position. The microneedle drive device is used to drive the microneedle seat 2 to move to the first position after receiving the trigger signal, and then drive the microneedle seat 2 to move to the second position after a preset time; the injection drive device is used to continuously drive the injector 3 to deliver the injection liquid to the hollow microneedle 8 within a preset time after the microneedle seat 2 moves to the first position. Specifically, when the microneedle device for introducing tranexamic acid to remove vulvar melanin is started, the microneedle driving device can move the microneedle seat 2 to the second position or stay at the second position. During the injection process, the front end of the front shell 6 abuts against the vulva, prompting the front shell 6 to move backward from the third position to the fourth position, and triggering the trigger device to generate a trigger signal when it moves to the fourth position. After receiving the trigger signal, the microneedle driving device drives the microneedle seat 2 to move to the first position, and each hollow microneedle 8 extends and inserts into the vulva. At the same time, the injection driving device starts to drive the syringe 3 to deliver the injection liquid to the hollow microneedle 8, and the injection liquid is injected into the vulva through each hollow microneedle 8. After a preset time, the injection driving device stops driving the syringe 3, and at the same time, the microneedle driving device drives the microneedle seat 2 to move to the second position, and each hollow microneedle 8 is retracted. After that, the front end of the front shell 6 leaves the vulva to complete a single injection. In a single injection, the injection amount of each hollow microneedle 8 (i.e., the injection amount of each injection point) is related to the length of the preset time, so the preset time can be adjusted for setting, with high accuracy and simple injection operation. The microneedle driving device can drive each hollow microneedle 8 to be inserted and retracted quickly, thereby reducing the pain of injection into the sensitive tissue of the vulva, thereby reducing the fear of the patient about the operation.

[0039] In this embodiment, the trigger device is a pressure sensor. A mounting seat 17 is formed on the inner wall of the front portion of the rear housing 7, and a pressure sensitive element 18 of the pressure sensor is arranged on the mounting seat 17. When the front housing 6 moves to the fourth position, the rear end of the rear portion thereof presses on the pressure sensitive element 18. After the pressure sensitive element 18 is pressurized, the trigger device generates a pressure signal, i.e., a trigger signal. It should be understood that the trigger device can also be a displacement sensor or other suitable structures, which are not listed here one by one.

[0040] In this embodiment, the injection drive device includes a motor 19, a screw 20, a nut seat 21, and a first control circuit 22. The nut seat 21 cooperates with the screw 20. A guide groove is formed inside the rear housing 7 to cooperate with the nut seat 21 to prevent the nut seat 21 from rotating. The motor 19 can drive the nut seat 21 to move in the direction of the piston rod of the syringe 3 through the screw 20 to drive the syringe 3 to deliver the injection liquid to the hollow microneedle 8. The first control circuit 22 is electrically connected to the trigger device and the motor 19.

[0041] After receiving the trigger signal generated by the trigger device, the first control circuit 22 waits for a time A, and then controls the motor 19 to connect and work for a preset time. The time A is the time required for the microneedle drive device to drive the microneedle seat 2 to move to the first position after receiving the trigger signal. In a single injection, the injection volume of each hollow microneedle 8 (i.e., the injection volume of each injection point) is not only related to the length of the preset time, but also to the speed of the motor 19, so the injection volume of each hollow microneedle 8 can also be adjusted by adjusting the speed of the motor 19.

[0042] It should be understood that the injection drive device may also have other suitable structures.

[0043] In this embodiment, the microneedle driving device includes a magnet 23 fixed to the rear end of the microneedle seat 2, an electromagnet 24 arranged behind the magnet 23, and a second control circuit 25. The second control circuit 25 is connected to the trigger device. The second control circuit 25 is used to control the direction of the direct current input to the electromagnet 24. The magnetic field generated by the electromagnet 24 when it is energized can drive the microneedle seat 2 to move, and remain in the first position and the second position. For example, when the electromagnet 24 inputs a direct current in the first direction, it generates an attractive force on the magnet 23, driving the microneedle seat 2 to move to the second position, or remain in the second position. When the electromagnet 24 inputs a direct current in the second direction, it generates a repulsive force on the magnet 23, driving the microneedle seat 2 to move to the first position, or remain in the first position. The magnitude of the magnetism of the electromagnet 24 is related to the strength of the current and the number of turns of the coil. The greater the magnetic field strength of the magnetic field generated by the electromagnet 24, the faster the hollow microneedle 8 is inserted and retracted.

[0044] It should be understood that the microneedle driving device may also have other suitable structures.

[0045] The present embodiment is a microneedle device for the introduction of tranexamic acid to remove vulvar melanin. The insertion and retraction of the hollow microneedles and the injection of the injection solution are all performed automatically, and the injection operation is simple. The microneedle drive device can drive each hollow microneedle to insert and retract quickly, reduce the pain of injection into the sensitive tissue of the vulva, and thus reduce the fear of the beauty seeker about the operation.

Claims

1. A microneedle device for the introduction of tranexamic acid to remove vulvar melanin, characterized in that: It includes a housing, a microneedle seat, a syringe, an injection drive device, a trigger device, a microneedle drive device, an elastic reset member, and a power source; the syringe, the injection drive device, the trigger device, the microneedle drive device, and the power source are all installed in the housing; the housing includes a front housing and a rear housing; A plurality of hollow microneedles are arranged at the front end of the microneedle seat, and a liquid channel connected to the ends of each hollow microneedle is formed inside the microneedle seat; the liquid inlet of the liquid channel is located at the rear end of the microneedle seat, and the nipple of the syringe is connected to the liquid inlet of the liquid channel through a hose; the peripheral wall of the microneedle seat matches the inner wall of the front shell, and the microneedle seat can move forward and backward along the inner wall of the front shell between a first position and a second position; when the microneedle seat is in the first position, each hollow microneedle extends out of the front shell, and when the microneedle seat is in the second position, each hollow microneedle is retracted into the front shell; the peripheral wall of the microneedle seat is formed with a first limit block protruding outward, and the inner wall of the front shell is formed with a first limit groove that cooperates with the first limit block to limit the movement of the microneedle seat between the first position and the second position; The front part of the rear shell is sleeved on the rear part of the front shell, and the front shell can move forward and backward along the inner wall of the rear shell between the third position and the fourth position; the outer peripheral wall of the rear part of the front shell is formed with a second limit block protruding outward, and the inner wall of the front part of the rear shell is formed with a second limit groove that cooperates with the second limit block and is used to limit the movement of the front shell between the third position and the fourth position; the elastic reset member acts on the front shell and the rear shell at the same time, so as to cause the front shell to reset to the third position; The trigger device is used to generate a trigger signal when the front shell is in the fourth position; the microneedle drive device is used to drive the microneedle seat to move to the first position after receiving the trigger signal, and then drive the microneedle seat to move to the second position after a preset time; the injection drive device is used to continuously drive the syringe to deliver injection liquid to the hollow microneedle within a preset time after the microneedle seat moves to the first position.

2. The microneedle device for the introduction of tranexamic acid to remove vulvar melanin according to claim 1, characterized in that: The injection drive device includes a motor, a screw, a nut seat, and a first control circuit. The nut seat cooperates with the screw. A guide groove is formed inside the rear shell body to cooperate with the nut seat to prevent the nut seat from rotating. The motor can drive the nut seat to move in the direction of the piston rod of the syringe through the screw to drive the syringe to deliver injection liquid to the hollow microneedle. The first control circuit is electrically connected to the trigger device and the motor.

3. The microneedle device for the introduction of tranexamic acid to remove vulvar melanin according to claim 2, characterized in that: The microneedle driving device includes a magnet fixed to the rear end of the microneedle seat, an electromagnet arranged behind the magnet, and a second control circuit, wherein the second control circuit is connected to the trigger device, and the second control circuit is used to control the direction of the DC current input to the electromagnet; the magnetic field generated by the electromagnet when it is energized can drive the microneedle seat to move, and maintain it in the first position and the second position.

4. The microneedle device for the introduction of tranexamic acid to remove vulvar melanin according to claim 3, characterized in that: The front wall and the rear wall of the first limiting groove are both provided with buffer pads.

5. The microneedle device for the introduction of tranexamic acid to remove vulvar melanin according to claim 4, characterized in that: The elastic return member is a rubber ring, and the outer peripheral wall of the rear part of the front shell shrinks inward relative to the outer peripheral wall of the front part of the front shell. The elastic return member is arranged between the rear end of the front part of the front shell and the front end of the front part of the rear shell, and simultaneously abuts against the rear end of the front part of the front shell and the front end of the front part of the rear shell.

6. The microneedle device for the introduction of tranexamic acid to remove vulvar melanin according to claim 5, characterized in that: The trigger device is a pressure sensor, a mounting seat is formed on the inner wall of the front part of the rear shell, a pressure sensitive element of the pressure sensor is arranged on the mounting seat, and when the front shell moves to the fourth position, the rear end of the rear part presses on the pressure sensitive element.

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