Low-resistance stripping injection needle

Abstract

The utility model belongs to the technical field of stripping injection needles, and particularly relates to a low-resistance stripping injection needle which comprises an injection needle cylinder, a stripping needle head, a push rod and a push plate, the stripping needle head is fixedly sleeved on the left side of the injection needle cylinder, an injection tube cavity is arranged on the right side of the injection needle cylinder, and the push rod is movably arranged on the inner side of the injection tube cavity. The left side of the push plate is fixedly connected with the right side of a push rod, the right edge of the outer side of the injection needle cylinder is fixedly sleeved with a fixing plate, the outer side of the injection needle cylinder is movably sleeved with a limiting oval plate, and the right side of the limiting oval plate is symmetrically connected with connecting rods in the front-back direction. Overlarge frictional resistance exists between a push rod in the syringe and the inner wall of the cavity of the syringe, so that the injection can not be smoothly carried out; the problems that a push rod in an existing stripping injection needle is fragile and prone to deflection and bending due to the fact that pushing force is too large, and injection fails are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of stripping injection needles, in particular to a low-resistance stripping injection needle. Background Art

[0002] In recent years, the technology of transdermal absorption of liquids such as drugs using liquid injection devices with fine needle-like protrusions has attracted much attention in the medical field, the beauty field, etc. The liquid injection device can be used to inject liquids into the body by piercing the shallower layers of the skin such as the stratum corneum, which can greatly reduce the pain felt by the subjects compared to the usual syringes. Therefore, it has attracted much attention as a low-invasive liquid drug delivery device, and the injection needle of the peeling injection needle can take into account both tissue peeling and injection effects during use.

[0003] When injecting, there is too much friction resistance between the push rod inside the existing peeling injection needle and the inner wall of the syringe cavity, which makes the peeling injection needle inconvenient to use and is not conducive to the smooth injection. In addition, the push rod in the existing peeling injection needle is relatively fragile and can easily be deflected and bent due to excessive pushing force, resulting in injection failure, which is quite inconvenient. Utility Model Content

[0004] The purpose of the utility model is to provide a low-resistance peeling injection needle to solve the problem that the existing peeling injection needle mentioned in the above background technology has excessive friction resistance between the push rod inside and the inner wall of the syringe cavity during injection, which is not conducive to the smooth progress of the injection; the push rod in the existing peeling injection needle is relatively fragile and can easily be deflected and bent due to excessive pushing force, resulting in injection failure.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-resistance stripping injection needle, comprising a syringe, a stripping needle, a push rod, and a push plate, wherein the stripping needle is fixedly sleeved on the left side of the syringe, an injection tube cavity is opened on the right side of the syringe, the push rod is movably arranged on the inner side of the injection tube cavity, the left side of the push plate is fixedly connected to the right side of the push rod, a fixed plate is fixedly sleeved on the right edge of the outer side of the syringe, a limiting elliptical plate is movably sleeved on the outer side of the syringe, a connecting rod is symmetrically connected to the right side of the limiting elliptical plate, and one end of the connecting rod away from the limiting elliptical plate is fixedly connected to the left side of the push plate, a disinfection sleeve is movably arranged on the left side of the stripping needle, and the disinfection sleeve is plugged into the left side of the syringe.

[0006] Preferably, the two connecting rods are movably inserted through the left and right sides of the fixing plate, and the two connecting rods are fixedly arranged on the front and rear sides of the injection syringe.

[0007] Preferably, the inner wall of the injection tube cavity is evenly provided with anti-slip card bodies, the left side of the push rod is fixedly connected with a rubber piston, the outer side of the rubber piston is evenly provided with anti-slip grooves, and the outer side wall of the rubber piston is in contact with the inner side wall of the injection tube cavity.

[0008] Preferably, a sliding block is fixedly connected to the bottom of the sliding groove, glass balls are movably provided on the upper and lower sides of the sliding block, sliding grooves are provided on opposite sides of the sliding card body, and ball grooves are provided on the front and rear side walls inside the sliding groove.

[0009] Preferably, the glass ball is movably connected to the ball groove, the sliding groove is slidably connected to the sliding block, and the sliding-assisting groove is movably plugged into the sliding-assisting card body.

[0010] Preferably, the outer side of the push rod is evenly connected with abutment blocks, and the abutment blocks abut against the inner side of the injection tube cavity.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1) When the device is in use, the abutment block on the outside of the push rod abuts against the inner wall of the injection tube cavity, thereby reducing the contact friction with the inner wall of the injection tube cavity and lowering the pushing resistance. Then, the sliding card body is inserted into the inner side of the sliding groove, so that the sliding block slides inside the sliding groove. With the cooperation of the sliding block, sliding groove, sliding card body and sliding groove that fit tightly, the device has a strong sealing performance. The glass ball slides on the inner side of the ball groove, thereby achieving both sealing performance and further reducing resistance, which helps the pushing effect.

[0013] 2) When the push rod is pushed for injection, the abutment block on the outside of the push rod abuts against the inner wall of the injection tube cavity, providing stability and guiding effects. Then two connecting rods are used to connect the limiting elliptical plate and the push plate, making the push of the push rod more stable and preventing the push rod from being deflected and broken due to excessive thrust. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the main structure of the disinfection sleeve;

[0016] Figure 3 It is a schematic diagram of the main structure of the putter;

[0017] Figure 4 It is a schematic diagram of the main structure of the sliding card body.

[0018] In the figure: 1. injection syringe, 2. stripping needle, 3. push rod, 4. push plate, 5. injection tube cavity, 6. fixing plate, 7. limiting elliptical plate, 8. connecting rod, 9. sliding card body, 10. rubber piston, 11. sliding groove, 12. sliding block, 13. glass ball, 14. sliding groove, 15. ball groove, 16. abutment block, 17. disinfection sleeve. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0021] Example:

[0022] See also Figure 1-4 The utility model provides a technical solution: a low-resistance stripping injection needle, comprising an injection syringe 1, a stripping needle 2, a push rod 3, and a push plate 4. The stripping needle 2 is fixedly sleeved on the left side of the injection syringe 1, and an injection tube cavity 5 is opened on the right side of the injection syringe 1. The push rod 3 is movably arranged on the inner side of the injection tube cavity 5. The left side of the push plate 4 is fixedly connected to the right side of the push rod 3. A fixed plate 6 is fixedly sleeved on the right edge of the outer side of the injection syringe 1. A limiting elliptical plate 7 is movably sleeved on the outer side of the injection syringe 1 for limiting the two A connecting rod 8 is symmetrically connected to the right side of the limiting elliptical plate 7. The end of the connecting rod 8 away from the limiting elliptical plate 7 is fixedly connected to the left side of the push plate 4. The two connecting rods 8 connect the limiting elliptical plate 7 and the push plate 4, so that the pushing of the push rod 3 is more stable and prevents the push rod 3 from being deflected and broken due to excessive thrust. A disinfection sleeve 17 is movably provided on the left side of the stripping needle 2. The disinfection sleeve 17 is plugged into the left side of the injection syringe 1, and alcohol disinfection cotton is placed on the inner side of the disinfection sleeve 17 for disinfection.

[0023] Among them, the two connecting rods 8 are movable and penetrate the left and right sides of the fixed plate 6, the two connecting rods 8 are fixedly set on the front and back sides of the injection syringe 1, the inner wall of the injection tube cavity 5 is evenly provided with a sliding card body 9, the left side of the push rod 3 is fixedly connected with a rubber piston 10, the outer side of the rubber piston 10 is evenly provided with a sliding groove 11, the outer wall of the rubber piston 10 is in contact with the inner wall of the injection tube cavity 5, the bottom of the sliding groove 11 is fixedly connected with a sliding block 12, the upper and lower sides of the sliding block 12 are movably provided with glass balls 13, the opposite side of the sliding card body 9 is provided with a sliding groove 14, the front and rear side walls inside the sliding groove 14 are provided with a ball groove 15, and the glass ball 13 and the ball groove 15 are connected to each other. The glass ball 13 is movably connected and slides inside the ball groove 15, which achieves both sealing and further reduces resistance, thereby facilitating pushing. The sliding groove 14 is slidably connected to the sliding block 12, and the sliding-assisting groove 11 is movably plugged into the sliding-assisting card body 9. With the cooperation of the tightly fitting sliding block 12, sliding groove 14, sliding-assisting card body 9 and sliding-assisting groove 11, the sealing of the device is relatively strong. The outer side of the push rod 3 is evenly connected with abutment blocks 16, which abut against the inner side of the injection tube cavity 5. The abutment block 16 abuts against the inner wall of the injection tube cavity 5, providing stability and guiding effects, reducing the contact friction with the inner wall of the injection tube cavity 5, and reducing the pushing resistance.

[0024] Working principle: When the device is in use, the sterilization sleeve 17 is pulled out and the push rod 3 is pushed for injection. The abutment block 16 on the outside of the push rod 3 abuts against the inner wall of the injection tube cavity 5, providing stability and guiding effects. Then, the two connecting rods 8 are used to connect the limiting elliptical plate 7 and the push plate 4, making the pushing of the push rod 3 more stable and preventing the push rod 3 from being deflected and broken due to excessive thrust. The abutment block 16 on the outside of the push rod 3 abuts against the inner wall of the injection tube cavity 5, reducing the contact friction with the inner wall of the injection tube cavity 5 and reducing the pushing resistance. Then, the sliding card body 9 is inserted into the inner side of the sliding groove 11, so that the sliding block 12 slides inside the sliding groove 14. With the cooperation of the tightly fitting sliding block 12, sliding groove 14, sliding card body 9 and sliding groove 11, the device has a strong sealing performance, and the glass ball 13 slides on the inner side of the ball groove 15, achieving both sealing performance and further reducing resistance, which helps the pushing effect.

[0025] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low resistance stripping injection needle, comprising an injection syringe (1), a stripping needle (2), a push rod (3), and a push plate (4), characterized in that: The stripping needle (2) is fixedly sleeved on the left side of the injection syringe (1), and an injection tube cavity (5) is opened on the right side of the injection syringe (1). The push rod (3) is movably arranged on the inner side of the injection tube cavity (5). The left side of the push plate (4) is fixedly connected to the right side of the push rod (3). A fixed plate (6) is fixedly sleeved on the right edge of the outer side of the injection syringe (1). A limiting elliptical plate (7) is movably sleeved on the outer side of the injection syringe (1). A connecting rod (8) is symmetrically connected to the right side of the limiting elliptical plate (7) in a front-to-back manner. One end of the connecting rod (8) away from the limiting elliptical plate (7) is fixedly connected to the left side of the push plate (4). A disinfection sleeve (17) is movably arranged on the left side of the stripping needle (2), and the disinfection sleeve (17) is plugged into the left side of the injection syringe (1).

2. A low resistance peeling injection needle according to claim 1, characterized in that: The two connecting rods (8) are movably connected to and penetrate the left and right sides of the fixed plate (6), and the two connecting rods (8) are fixedly arranged on the front and rear sides of the injection syringe (1).

3. The low resistance peeling injection needle according to claim 1, characterized in that: The inner wall of the injection tube cavity (5) is evenly provided with a sliding-aiding card body (9), the left side of the push rod (3) is fixedly connected with a rubber piston (10), the outer side of the rubber piston (10) is evenly provided with a sliding-aiding groove (11), and the outer side wall of the rubber piston (10) is in contact with the inner side wall of the injection tube cavity (5).

4. The low resistance peeling injection needle according to claim 3, characterized in that: A sliding block (12) is fixedly connected to the bottom of the sliding-assisting groove (11), and glass balls (13) are movably arranged on the upper and lower sides of the sliding block (12). A sliding groove (14) is provided on the opposite side of the sliding-assisting card body (9), and ball grooves (15) are provided on the front and rear side walls inside the sliding groove (14).

5. The low resistance peeling injection needle according to claim 4, characterized in that: The glass ball (13) is movably connected to the ball groove (15), the sliding groove (14) is slidably connected to the sliding block (12), and the sliding-assisting groove (11) is movably plugged into the sliding-assisting card body (9).

6. The low resistance peeling injection needle according to claim 1, characterized in that: The outer side of the push rod (3) is evenly connected with an abutment block (16), and the abutment block (16) abuts against the inner side of the injection tube cavity (5).

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