Beauty injection needle

Abstract

The utility model provides a beauty injection needle, which comprises a movable boss, a needle cylinder, a needle head, a needle head, a needle head, a needle head, a needle head, a needle head, a needle head, a needle head, a needle head, a needle head and a needle head cover, and is characterized in that: the movable boss forms a cavity with closed periphery and two open ends; the locking assembly comprises a locking part and a matching part which are respectively formed on the opposite end surfaces of the cavity and the needle cylinder, and the locking assembly has a locking state and an unlocking state; in the locking state, the locking part is matched with the matching part in a limiting manner so as to limit the movement of the movable boss; and in the unlocking state, the locking part is unmatched with the matching part so as to release the movable boss, so that the movable boss can move relative to the needle cylinder and is close to or far away from the piston rod. The technical problem that the injection force of a traditional beauty injection needle cannot be adjusted is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of beauty tools, in particular to a beauty injection needle. Background Art

[0002] When performing facial beauty treatments, syringes are needed, such as injecting botulinum toxin, injecting hyaluronic acid and other drugs. However, when extracting drugs, there are different requirements for the dosage of the drugs, and the length of the syringe remains unchanged. When extracting drugs of different doses, the piston rod of the syringe is located at different lengths of the syringe barrel. When medical staff use syringes for injections, they generally use their thumbs to press the end of the piston, and their index fingers to press the protruding part of the syringe at the same time. The thumb and index fingers push the drugs in the syringe barrel at the same time. Since the piston rod of the syringe is at different positions in the syringe, the injection force required is also different. The control force between the thumb and index finger will inevitably deviate, that is, medical staff cannot use the best force to inject the piston rod of the syringe, which can easily lead to excessive or insufficient force during injection. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a cosmetic injection needle to solve the technical problem in the related art that the injection force of the conventional cosmetic injection needle cannot be adjusted.

[0004] The utility model provides a cosmetic injection needle, comprising a syringe, one end of which is provided with a needle head, and the other end of which is movably provided with a piston rod, and the injection needle comprises:

[0005] The movable boss forms a cavity which is closed on all sides and open at both ends, and the cavity is movably sleeved outside the syringe;

[0006] A locking assembly, comprising a locking portion and a matching portion respectively formed on opposite end surfaces of the cavity and the syringe, the locking assembly having a locked state and an unlocked state;

[0007] In the locked state, the locking portion and the matching portion are limitedly matched to limit the movement of the movable boss;

[0008] In the unlocked state, the locking portion is released from the matching portion to release the movable boss, so that the movable boss can move relative to the syringe and move closer to or away from the piston rod.

[0009] Furthermore, the locking portion is a first protrusion formed on the surface of the cavity, and the matching portion is a plurality of second protrusions formed on the surface of the syringe. The plurality of second protrusions are arranged at intervals along the axial direction of the syringe, and a limiting opening is configured between two adjacent second protrusions. In the locked state, the first protrusion extends into any one of the limiting openings, and in the unlocked state, the first protrusion extends out of the limiting opening.

[0010] Furthermore, the limiting opening is a structure with one end closed and the other end open.

[0011] Furthermore, the syringe is provided with a slide groove along its axial direction, the second protrusion is located in the slide groove, and a movement gap is formed between the open end of the limit opening and the inner wall of the slide groove, and the movement gap is arranged along the length direction of the slide groove to avoid the first protrusion.

[0012] Furthermore, a shrinkage structure is provided at the open end of the limiting opening.

[0013] Furthermore, one end of the necking structure is higher than one end of the limiting opening.

[0014] Furthermore, the movable boss is provided with anti-slip grooves.

[0015] Compared with the prior art, the utility model has the following beneficial effects: a movable movable boss is sleeved on the syringe, and the movable boss is used to move back and forth along the syringe body. During injection, medical personnel can adjust the position of the movable boss on the syringe body according to the size of their own palms and the capacity of the liquid in the syringe, so that the medical personnel can use the optimal force for injection; furthermore, locking parts and matching parts are formed on the relative end faces of the movable boss and the syringe, so that the movable boss can be moved and fixed at any length of the syringe, thereby improving the versatility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a cosmetic injection needle in one embodiment of the utility model;

[0017] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0018] Figure 3 It is a structural schematic diagram of a movable boss in one embodiment of the utility model.

[0019] Description of Figure Numbers:

[0020] 1. Syringe; 2. Needle; 3. Piston rod; 4. Moving boss; 401. Cavity; 402. First protrusion; 5. Second protrusion; 6. Limiting opening; 601. Narrow opening; 7. Slide groove; 8. Anti-slip pattern.

[0021] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and beneficial effects of the utility model more clear, the technical solution of the utility model is further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] See also Figures 1 to 3 The utility model provides a cosmetic injection needle, comprising a syringe 1, one end of which is provided with a needle 2, and the other end of which is movably provided with a piston rod 3, and the injection needle comprises:

[0024] The movable boss 4 is formed with a cavity 401 which is closed on all sides and open at both ends, and the cavity 401 is movably sleeved outside the syringe 1;

[0025] A locking assembly, comprising a locking portion and a matching portion respectively formed on opposite end surfaces of the cavity 401 and the syringe 1, the locking assembly having a locked state and an unlocked state;

[0026] In the locked state, the locking portion and the matching portion are limitedly matched to limit the movement of the movable boss 4;

[0027] In the unlocked state, the locking portion is released from the matching portion to release the movable boss 4 , so that the movable boss 4 can move relative to the syringe 1 and move closer to or away from the piston rod 3 .

[0028] In this embodiment, the injection needle includes a syringe 1, a needle 2 arranged at one end of the syringe 1, and a piston rod 3 movably arranged at the other end of the syringe 1. In order to facilitate the adjustment of the injection force, a movable boss 4 is movably sleeved on the surface of the syringe 1. The movable boss 4 forms a cavity 401 that is closed all around and open at both ends. The cavity 401 is used to be movably sleeved outside the syringe 1. The open end of the movable boss 4 is used to abut against the index finger of the medical staff. Before the injection, the medical staff moves the movable boss 4 according to the shape and size of their own palms and the volume of the medicine in the syringe 1. When the syringe 1 is adjusted to a suitable position, that is, when the volume of the medicine in the syringe 1 is small, the piston rod 3 of the syringe 1 is located in the barrel of the syringe 1 for a large part. When injecting, the movable stroke of the piston rod 3 is short, and the movable boss 4 is adjusted downward. During this period, the thumb is used to press the end of the piston rod 3, and the index finger is in contact with the movable boss 4, so that the movable boss 4 is gradually away from the piston rod 3 until the medical staff adjusts to the optimal injection force. Similarly, when the volume of the medicine in the syringe 1 is large, the piston rod 3 of the syringe 1 is located in the barrel of the syringe 1 for a large part. When injecting, the movable boss 4 is adjusted downward. During injection, the piston rod 3 has a long movable stroke. Medical personnel with smaller palms may not have a good fit between their index finger and thumb. They adjust the movable boss 4 upward to reduce the injection movable stroke of the piston rod 3. During this period, they use their thumb to press the end of the piston rod 3, and their index finger abuts against the movable boss 4, so that the movable boss 4 gradually approaches the piston rod 3 until the medical personnel adjusts to the best injection strength. In different situations, medical personnel can use the best injection strength for injection, thereby improving the injection feeling and safety. On the other hand, in order to facilitate The movable boss 4 is fixed at any position of the body of the syringe 1. The movable boss 4 and the opposite end faces of the syringe 1 are formed with a locking portion and a matching portion. When the locking portion and the matching portion are limited and matched, they are used to limit the movement of the movable boss 4. The state at this time is the injection state in which the movable boss 4 is adjusted to the optimal position. When the locking portion and the matching portion are in contact and limited and matched, the movable boss 4 can move relative to the syringe 1 so as to approach or move away from the piston rod 3, so as to change the injection activity stroke of the piston rod 3, so that medical personnel can adjust the movable boss 4 to achieve the optimal injection force.

[0029] The locking portion is a first protrusion 402 formed on the surface of the cavity 401, and the matching portion is a plurality of second protrusions 5 formed on the surface of the syringe 1. The plurality of second protrusions 5 are arranged at intervals along the axial direction of the syringe 1, and a limiting opening 6 is configured between two adjacent second protrusions 5. In the locked state, the first protrusion 402 extends into any one of the limiting openings 6, and in the unlocked state, the first protrusion 402 extends out of the limiting opening 6.

[0030] In this embodiment, a first protrusion 402 is provided on the surface of the cavity 401, and a plurality of second protrusions 5 are provided on the surface of the syringe 1. The plurality of second protrusions 5 are arranged at intervals along the axial direction of the syringe 1, and a limiting opening 6 is formed between two adjacent second protrusions 5. In the locked state, the movable boss 4 extends into any limiting opening 6 through the first protrusion 402 to change the injection stroke of the piston rod 3. In the unlocked state, the first protrusion 402 extends out of the limiting opening 6 to facilitate changing the position of the movable boss 4 again.

[0031] The limiting opening 6 is a structure with one end closed and the other end open.

[0032] In this embodiment, the limit opening 6 is a structure with one end closed and the other end open, so that when the movable boss 4 is adjusted to any limit opening 6, the movable boss 4 can be rotated so that the first boss moves along the open end of the limit opening 6 to the closed end of the limit opening 6 to limit the free movement of the movable boss 4.

[0033] The syringe 1 is provided with a slide groove 7 along its axial direction, the second protrusion 5 is located in the slide groove 7, and a movement gap is formed between the open end of the limit opening 6 and the inner wall of the slide groove 7. The movement gap is arranged along the length direction of the slide groove 7 to avoid the first protrusion 402.

[0034] In this embodiment, a slide groove 7 is provided along the axial direction of the syringe 1, and the second protrusion 5 is arranged in the slide groove 7. A movement gap is formed between the open end of the limit opening 6 and the inner wall of the slide groove 7, so that the movable boss 4 can move up and down along the syringe 1 through the slide groove 7 to change the distance between the movable boss 4 and the piston rod 3, thereby facilitating the adjustment of the injection force.

[0035] The open end of the limiting opening 6 is provided with a constriction 601 structure.

[0036] In this embodiment, a necking 601 structure is provided at the open end of the limiting opening 6; further, one end of the necking 601 structure is higher than one end of the limiting opening 6; during injection, the movable boss 4 and the piston rod 3 move relative to each other, so that the first protrusion 402 of the movable boss 4 enters into the necking 601 through the open end of the limiting opening 6, and one end of the necking 601 is higher than one end of the limiting opening 6, so that during injection, the first protrusion 402 is always in contact with the necking 601 under the relative force of the movable boss 4 and the piston rod 3, thereby preventing the first protrusion 402 from slipping out of the limiting opening 6 during injection, resulting in free movement of the movable boss 4.

[0037] The movable boss 4 is provided with anti-slip grooves 8 .

[0038] In this example, in order to increase the friction between the index finger of the medical staff and the movable boss 4 , an anti-slip pattern 8 is provided on the movable boss 4 .

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A cosmetic injection needle, comprising a syringe, one end of which is provided with a needle head, and the other end of which is movably provided with a piston rod, characterized in that: The injection needle comprises: The movable boss forms a cavity which is closed on all sides and open at both ends, and the cavity is movably sleeved outside the syringe; A locking assembly, comprising a locking portion and a matching portion respectively formed on opposite end surfaces of the cavity and the syringe, the locking assembly having a locked state and an unlocked state; In the locked state, the locking portion and the matching portion are limitedly matched to limit the movement of the movable boss; In the unlocked state, the locking portion is released from the matching portion to release the movable boss, so that the movable boss can move relative to the syringe and move closer to or away from the piston rod.

2. A cosmetic injection needle as claimed in claim 1, characterized in that: The locking portion is a first protrusion formed on the surface of the cavity, and the matching portion is a plurality of second protrusions formed on the surface of the syringe. The plurality of second protrusions are arranged at intervals along the axial direction of the syringe, and a limiting opening is configured between two adjacent second protrusions. In the locked state, the first protrusion extends into any one of the limiting openings, and in the unlocked state, the first protrusion extends out of the limiting opening.

3. A cosmetic injection needle as claimed in claim 2, characterized in that: The limiting opening is a structure with one end closed and the other end open.

4. A cosmetic injection needle as claimed in claim 3, characterized in that: The syringe is provided with a slide groove along its axial direction, the second protrusion is located in the slide groove, and a movement gap is formed between the open end of the limit opening and the inner wall of the slide groove, and the movement gap is arranged along the length direction of the slide groove for avoiding the first protrusion.

5. A cosmetic injection needle as claimed in claim 3 or 4, characterized in that: The open end of the limiting opening is provided with a shrinkage structure.

6. A cosmetic injection needle as claimed in claim 5, characterized in that: One end of the shrinkage structure is higher than one end of the limiting opening.

7. A cosmetic injection needle as claimed in claim 1, characterized in that: The movable boss is provided with anti-skid grooves.

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