Hyaluronic acid injection device capable of controlling injection amount

Abstract

The utility model discloses a hyaluronic acid injection device capable of controlling the injection amount, and relates to the technical field of injectors. Comprising a needle cylinder, a needle head is connected to the center of the end of the needle cylinder, a rubber head is sleeved with a piston on the inner wall of the needle cylinder, a push rod is fixedly installed at the end of the rubber head, a pressing plate is fixedly installed at the end, away from the rubber head, of the push rod, and a limiting plate is fixedly installed on the pressing plate. The limiting plate slidably sleeves the inner wall of the sleeve and is attached to the adjusting plate; by adjusting the position of the adjusting plate on the inner wall of the sleeve, when a medical worker pushes the pressing plate to drive the rubber head to move on the inner wall of the needle cylinder and hyaluronic acid in the needle cylinder is injected through the needle head, the medical worker is limited by the adjusting plate and is prevented from continuously pushing the pressing plate, so that the effect of quantitatively injecting hyaluronic acid is achieved; medical staff can conveniently control the injection amount, and the treatment effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of syringe technology, and in particular to a hyaluronic acid injection device with controllable injection volume. Background Technology

[0002] In recent years, hyaluronic acid injection technology has developed rapidly. Due to the absence of rejection reactions and its advantages of rapid and noticeable effects, hyaluronic acid injections are now widely used in anti-aging and localized filler procedures, such as correcting deep nasolabial folds, sunken cheeks, temples, and forehead, and filling wrinkles in the face and neck, all with good results.

[0003] Existing hyaluronic acid injection devices cannot accurately control the amount of hyaluronic acid injected. The control of the injection volume often depends on the doctor's experience and feel, which may lead to inaccurate injection volume, thereby affecting the injection effect and patient satisfaction.

[0004] Therefore, a hyaluronic acid injection device with controllable injection volume is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a hyaluronic acid injection device with controllable injection volume, which solves the aforementioned technical problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hyaluronic acid injection device with controllable injection volume, comprising a syringe, a needle connected to the center of the end of the syringe, a rubber head sleeved on the inner wall of the syringe, a push rod fixedly installed at the end of the rubber head, a pressure plate fixedly installed at the end of the push rod away from the rubber head, a limit plate fixedly installed on the pressure plate, a sleeve fixedly installed on the surface of the syringe, an adjusting plate slidably installed inside the sleeve, and the limit plate slidably sleeved on the inner wall of the sleeve and in contact with the adjusting plate.

[0007] Preferably, a support rod is fixedly installed on the surface of the pressure plate, the support rod slides through the inner wall of the sleeve, the end of the support rod away from the pressure plate is fixedly installed on the surface of the limiting plate, a lead screw is rotatably installed inside the sleeve, the adjusting plate is threaded onto the surface of the lead screw, the end of the lead screw protrudes from the surface of the syringe and is fixedly installed with a knob, and the limiting plate slides through the surface of the lead screw.

[0008] Preferably, a through groove is formed on the surface of the sleeve, a slider is fixedly installed on the surface of the adjusting plate, the slider is slidably sleeved on the inner wall of the through groove, a pointer is fixedly installed on the surface of the slider, the pointer slides against the surface of the syringe, an observation window is formed on the surface of the syringe, a scale is formed on the surface of the observation window, and the end of the pointer away from the slider corresponds to the scale position.

[0009] Preferably, the syringe is detachably fitted with a collar, and a T-shaped block is fixedly installed on the surface of the collar. The end of the T-shaped block is inserted into the surface of the fixing seat, and a T-shaped groove is recessed in the surface of the fixing seat. The end of the T-shaped block is slidably fitted into the inner wall of the T-shaped groove.

[0010] Preferably, the end surface of the syringe is recessed and has a slot and a groove, and the inner wall of the collar is fixedly installed with a plug and a clamping head. The plug is slidably sleeved on the inner wall of the slot, and the clamping head is elastically clamped on the inner wall of the groove.

[0011] Preferably, the end face of the pressure plate is provided with anti-slip texture.

[0012] Compared with related technologies, the hyaluronic acid injection device with controllable injection volume provided by this utility model has the following beneficial effects:

[0013] This invention provides a hyaluronic acid injection device with controllable injection volume. By adjusting the position of the adjusting plate on the inner wall of the sleeve, when medical personnel push the pressure plate to move the rubber head on the inner wall of the syringe and inject the hyaluronic acid inside the syringe through the needle, the limiting plate, which is at the same horizontal line as the rubber head, will move synchronously on the inner wall of the sleeve. When the limiting plate is in contact with the surface of the adjusting plate, it is limited by the adjusting plate and prevents the medical personnel from continuing to push the pressure plate, thereby achieving the effect of quantitative injection of hyaluronic acid, which makes it easier for medical personnel to control the injection volume and improve the treatment effect.

[0014] This invention provides a hyaluronic acid injection device with controllable injection volume. During the movement of the adjustment plate, the slider slides on the inner wall of the channel, causing the pointer to follow the adjustment plate and keep the pointer close to the surface of the syringe. This allows medical staff to intuitively see the position of the pointer on the scale, thereby more accurately adjusting the injection volume each time and reducing errors. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the syringe structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the limiting plate structure of this utility model;

[0018] Figure 4 For the present utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0019] Figure 5 This is a schematic diagram of the pointer structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the collar structure of this utility model;

[0021] Figure 7 This is a schematic diagram of the fixing base structure of this utility model.

[0022] In the diagram: 1. Syringe, 11. Needle, 12. Pressure plate, 13. Observation window, 14. Sleeve, 15. Knob, 16. Pointer, 17. Rubber head, 18. Push rod, 19. Support rod, 2. Limiting plate, 21. Adjusting plate, 22. Slider, 23. Lead screw, 24. Through groove, 3. Slot, 31. Collar, 32. Insert block, 33. T-block, 34. Fixing seat, 35. Clamp, 36. T-slot. Detailed Implementation

[0023] Please see Figures 1-7 This utility model provides a technical solution, including a syringe 1, a needle 11 connected to the center of the end of the syringe 1, a rubber head 17 sleeved on the inner wall of the syringe 1, a push rod 18 fixedly installed at the end of the rubber head 17, a pressure plate 12 fixedly installed at the end of the push rod 18 away from the rubber head 17, a limit plate 2 fixedly installed on the pressure plate 12, a sleeve 14 fixedly installed on the surface of the syringe 1, an adjusting plate 21 slidably installed inside the sleeve 14, and the limit plate 2 slidably sleeved on the inner wall of the sleeve 14 and in contact with the adjusting plate 21;

[0024] By adjusting the position of the adjusting plate 21 on the inner wall of the sleeve 14, when medical staff push the pressure plate 12 to move the rubber head 17 on the inner wall of the syringe 1 and inject the hyaluronic acid inside the syringe 1 through the needle 11, the limiting plate 2, which is at the same horizontal line as the rubber head 17, will move synchronously on the inner wall of the sleeve 14. When the limiting plate 2 is in contact with the surface of the adjusting plate 21, it is limited by the adjusting plate 21 and prevents the medical staff from continuing to push the pressure plate 12, thereby achieving the effect of quantitative injection of hyaluronic acid, which makes it easier for medical staff to control the injection volume and improve the treatment effect.

[0025] A support rod 19 is fixedly installed on the surface of the pressure plate 12. The support rod 19 slides through the inner wall of the sleeve 14. The end of the support rod 19 away from the pressure plate 12 is fixedly installed on the surface of the limiting plate 2. A lead screw 23 is rotatably installed inside the sleeve 14. An adjusting plate 21 is threaded onto the surface of the lead screw 23. The end of the lead screw 23 protrudes from the surface of the syringe 1 and is fixedly installed with a knob 15. The limiting plate 2 slides through the surface of the lead screw 23.

[0026] Rotating knob 15 causes the lead screw 23 to rotate, which in turn causes the adjusting plate 21, which is threaded onto the surface of the lead screw 23, to slide on the inner wall of the sleeve 14. The position of the adjusting plate 21 on the inner wall of the sleeve 14 is adjusted according to the required injection volume, and the limiting plate 2 does not push the adjusting plate 21 to move when it is in contact with the adjusting plate 21, thus achieving a good limiting effect and improving the stability of controlling the injection volume.

[0027] A through groove 24 is provided on the surface of the sleeve 14. A slider 22 is fixedly installed on the surface of the adjusting plate 21. The slider 22 is slidably sleeved on the inner wall of the through groove 24. A pointer 16 is fixedly installed on the surface of the slider 22. The pointer 16 slides against the surface of the syringe 1. An observation window 13 is provided on the surface of the syringe 1. A scale is provided on the surface of the observation window 13. The end of the pointer 16 away from the slider 22 corresponds to the scale position.

[0028] During the movement of the adjustment plate 21, the slider 22 slides on the inner wall of the through groove 24, causing the pointer 16 to follow the adjustment plate 21 and keep the pointer 16 close to the surface of the syringe 1. This allows medical staff to see the position of the pointer 16 on the scale more intuitively, thereby adjusting the injection volume more accurately and reducing errors.

[0029] The syringe 1 is detachably fitted with a collar 31. A T-shaped block 33 is fixedly mounted on the surface of the collar 31. The end of the T-shaped block 33 is inserted into the surface of the fixed seat 34. A T-shaped groove 36 is recessed in the surface of the fixed seat 34. The end of the T-shaped block 33 is slidably fitted into the inner wall of the T-shaped groove 36.

[0030] The collar 31 is fitted onto the end of the syringe 1 and is slidably mounted on the surface of the fixed seat 34 by the T-block 33, so that the syringe 1 can be placed stably above the fixed seat 34. When the pressure plate 12 is pushed to inject hyaluronic acid, the shaking of the syringe 1 and the needle 11 can be reduced, the stability during injection can be improved, and the situation of accidental injury to the patient caused by the trembling of medical staff can be avoided.

[0031] The end surface of the syringe 1 is recessed and has a slot 3 and a groove. The inner wall of the collar 31 is fixedly installed with a plug 32 and a clamping head 35. The plug 32 is slidably sleeved on the inner wall of the slot 3, and the clamping head 35 is elastically clamped on the inner wall of the groove.

[0032] When the collar 31 is fitted onto the end of the syringe 1, the insert block 32 is inserted into the inner wall of the slot 3, and the locking head 35 is locked into the inner wall of the slot to connect the syringe 1 and the collar 31, thereby preventing the syringe 1 from shifting. It is also easy to assemble and disassemble and is highly practical.

[0033] The end face of the pressure plate 12 is provided with anti-slip texture; this increases the friction between the pressure plate 12 and the hand, further improving the stability during injection.

Claims

1. A hyaluronic acid injection device with controllable injection volume, comprising a syringe (1), characterized in that: The needle cylinder (1) is provided with a needle (11) at the center of the end, a rubber head (17) is sleeved on the inner wall of the needle cylinder (1), a push rod (18) is fixedly installed at the end of the rubber head (17), a pressing plate (12) is fixedly installed at the end of the push rod (18) away from the rubber head (17), the pressing plate (12) is fixedly installed with a limiting plate (2), a sleeve (14) is fixedly installed on the surface of the needle cylinder (1), an adjusting plate (21) is slidably installed in the sleeve (14), and the limiting plate (2) is slidably sleeved on the inner wall of the sleeve (14) and abuts against the adjusting plate (21); The pressing plate (12) is fixedly installed with a supporting rod (19) on the surface, the supporting rod (19) is slidably arranged on the inner wall of the sleeve (14), and the end of the supporting rod (19) away from the pressing plate (12) is fixedly installed on the surface of the limiting plate (2); a lead screw (23) is rotatably installed in the sleeve (14), the adjusting plate (21) is threadedly sleeved on the surface of the lead screw (23), and the end of the lead screw (23) protrudes from the surface of the needle cylinder (1) and is fixedly installed with a knob (15); and the limiting plate (2) is slidably arranged on the surface of the lead screw (23). A through groove (24) is formed through the surface of the sleeve (14), the adjusting plate (21) is fixedly installed with a sliding block (22), the sliding block (22) is slidably sleeved on the inner wall of the through groove (24), the sliding block (22) is fixedly installed with a pointer (16) on the surface, the pointer (16) is slidably arranged on the surface of the needle cylinder (1), an observation window (13) is formed through the surface of the needle cylinder (1), the observation window (13) is provided with a scale on the surface, and the end of the pointer (16) away from the sliding block (22) corresponds to the position of the scale; The needle cylinder (1) is detachably installed with a sleeve ring (31), the sleeve ring (31) is fixedly installed with a T-shaped block (33) on the surface, the T-shaped block (33) is inserted into the surface of a fixed seat (34), the surface of the fixed seat (34) is recessed to form a T-shaped groove (36), and the end of the T-shaped block (33) is slidably sleeved on the inner wall of the T-shaped groove (36).

2. The hyaluronic acid injection device of claim 1, wherein: The end surface of the needle cylinder (1) is recessed to form a slot (3) and a clamping groove, the inner wall of the sleeve ring (31) is fixedly installed with an insertion block (32) and a clamping head (35), the insertion block (32) is slidably sleeved on the inner wall of the slot (3), and the clamping head (35) is elastically clamped on the inner wall of the clamping groove.

3. The hyaluronic acid injection device of claim 2, wherein: The end surface of the pressing plate (12) is provided with anti-skid lines.

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