CN215426630U

CN215426630U - Disposable sterile insulin injection device

Info

Publication number: CN215426630U
Application number: CN202121399038.2U
Authority: CN
Inventors: 何京京
Original assignee: Yiwu Central Hospital
Current assignee: Yiwu Central Hospital
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2022-01-07
Anticipated expiration: 2031-06-23

Abstract

The utility model relates to the technical field of insulin injection, in particular to a disposable sterile insulin injection device, which comprises a cylinder body, wherein two symmetrical limiting mechanisms are arranged on the circumferential outer wall of the cylinder body close to the bottom end, and an injection device is arranged in the cylinder body; the disposable sterile insulin injection device comprises an injection device and a limiting mechanism, wherein the injection device and the limiting mechanism are arranged: on one hand, under the action of the second spring, the needle cylinder and the needle head can be retracted into the cylinder body, so that the needle head is prevented from stabbing a user when not in use, and meanwhile, the needle head is protected by the cylinder body when retracted into the cylinder body, so that the needle head can be prevented from being polluted; the telescopic syringe needle of design is passed through in this design, both made things convenient for the injection insulin, also avoided the syringe needle to stab the user.

Description

Disposable sterile insulin injection device

Technical Field

The utility model relates to the technical field of insulin injection, in particular to a disposable sterile insulin injection device.

Background

Insulin is a protein hormone secreted by the beta cells of the islets of langerhans in the pancreas stimulated by endogenous or exogenous substances such as glucose, lactose, ribose, arginine, glucagon, etc. Insulin is the only hormone for reducing blood sugar in the body, and simultaneously promotes the synthesis of glycogen, fat and protein, exogenous insulin is mainly used for treating diabetes, and at present, insulin is mainly injected by a disposable injector; in the prior art, an injection needle for injecting insulin has a simple structure and function, and in the daily use process, although a sleeve is arranged outside a sharp needle head, the sleeve is easy to loosen and fall off, and in the process of taking or discarding an injector, the needle head with the sleeve falling off is easy to stab a user.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a disposable sterile insulin injection device to solve the above-mentioned problems of the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme:

a disposable sterile insulin injection device comprises a cylinder body, wherein two symmetrical limiting mechanisms are arranged on the circumferential outer wall of the cylinder body close to the bottom end, and an injection device is arranged in the cylinder body; the limiting mechanism comprises a shell tightly bonded with the outer wall of the barrel, a limiting rod is arranged in the shell, one end of the limiting rod penetrates through the outer wall of the barrel and extends into the barrel, a limiting ring is coaxially and tightly bonded on the limiting rod, a first spring is sleeved on the limiting rod, the other end of the limiting rod penetrates through the shell and protrudes to the outside, and a shifting block is coaxially and tightly bonded on the other end of the limiting rod; the injection device comprises a needle cylinder, two symmetrical fixing blocks are tightly bonded on the outer wall of the needle cylinder close to the bottom end, a limiting hole is formed in each fixing block, and the tail end of each limiting rod is in plug-in fit with the corresponding limiting hole.

As a preferable technical scheme, the top surface of the cylinder body is provided with a through hole, the needle cylinder is connected with the through hole in a sliding mode, and the bottom surface of the cylinder body is provided with a pinhole.

As a preferable technical scheme, the needle cylinder is sleeved with a second spring, the bottom end of the second spring is abutted against the top surface of the cylinder body, the bottom end of the needle cylinder is tightly bonded with a needle head, the needle head penetrates through a needle hole, the needle cylinder is connected with a piston in a sliding manner, a connecting rod is embedded in the piston, and the top end of the connecting rod is tightly bonded with a pressing handle.

As a preferable technical scheme, the outer wall of the needle cylinder is tightly bonded with a fixing ring, the fixing ring is provided with two symmetrical positioning grooves, the inner wall of the cylinder body is tightly bonded with two symmetrical positioning strips, and the positioning grooves are in sliding connection with the corresponding positioning strips.

As a preferable technical scheme of the utility model, the fixing block is provided with an inclined plane.

As the preferable technical scheme of the utility model, the cylinder body and the needle cylinder are both made of transparent PP materials.

Compared with the prior art, the utility model has the beneficial effects that: the disposable sterile insulin injection device comprises an injection device and a limiting mechanism, wherein the injection device and the limiting mechanism are arranged: on one hand, under the action of the second spring, the needle cylinder and the needle head can be retracted into the cylinder body, so that the needle head is prevented from stabbing a user when not in use, and meanwhile, the needle head is protected by the cylinder body when retracted into the cylinder body, so that the needle head can be prevented from being polluted; the telescopic syringe needle of design is passed through in this design, both made things convenient for the injection insulin, also avoided the syringe needle to stab the user.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the needle construction of the present invention;

FIG. 3 is an enlarged view of the structure of FIG. 2 at A according to the present invention;

FIG. 4 is a structural sectional view of a cartridge body in the present invention;

FIG. 5 is a schematic view of an exploded structure of the injection device of the present invention;

fig. 6 is an enlarged view of the structure at B in fig. 5 according to the present invention.

The various reference numbers in the figures mean:

1. a barrel; 11. a through hole; 12. a pinhole; 13. a positioning bar;

2. a limiting mechanism; 21. a housing; 22. a limiting rod; 23. a limiting ring; 24. a first spring; 25. shifting blocks;

3. an injection device; 31. a needle cylinder; 32. a fixing ring; 321. positioning a groove; 33. a second spring; 34. a needle head; 35. a piston; 36. a connecting rod; 37. pressing the handle; 38. a fixed block; 381. a limiting hole; 382. a bevel.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed 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 that feature.

The utility model provides a technical scheme that:

referring to fig. 4, a disposable sterile insulin injection device includes a barrel 1. The top surface of the cylinder body 1 is provided with a through hole 11, the needle cylinder 31 is in sliding connection with the through hole 11, and the bottom surface of the cylinder body 1 is provided with a needle hole 12.

In this embodiment, the cylinder 1 and the syringe 31 are made of transparent PP material, the PP material is polypropylene, the density is only 0.90 to 0.91g/cm3, the PP material is one of the lightest varieties of all plastics at present, the PP material is a linear polymer with high density, no side chain and high crystallinity, the PP material has excellent comprehensive performance, is nontoxic and tasteless, has small density, and has better strength, rigidity, hardness and heat resistance than low-pressure polyethylene, good dielectric property and high-frequency insulation property, and is not influenced by humidity, and the transparency of the polypropylene product is better than that of the high-density polyethylene product; the material has the following advantages: on one hand, the transparent degree is high, so that the insulin in the needle cylinder 31 can be observed conveniently, the injection is convenient, and on the other hand, the non-toxic and light-weight syringe is applicable.

Referring to fig. 1-3, two symmetrical limiting mechanisms 2 are disposed on the circumferential outer wall of the cylinder 1 near the bottom end. Stop gear 2 includes the casing 21 that closely bonds with the barrel 1 outer wall, is equipped with gag lever post 22 in the casing 21, and the outer wall of barrel 1 is passed and extends to in the barrel 1 to the one end of gag lever post 22, and coaxial closely bonding has spacing ring 23 on the gag lever post 22, and the cover is equipped with first spring 24 on the gag lever post 22, and the other end of gag lever post 22 passes casing 21 and outstanding to the external world, and the coaxial closely bonding of the other end of gag lever post 22 has shifting block 25.

In this embodiment, the setting of stop collar 23 has played spacing effect to the motion of gag lever post 22 and first spring 24, through driving gag lever post 22 motion, can be so that first spring 24 is compressed to be convenient for gag lever post 22 and spacing hole 381 plug-in fit.

Referring to fig. 5-6, an injection device 3 is disposed in the barrel 1. The injection device 3 comprises a syringe 31, two symmetrical fixing blocks 38 are tightly bonded on the outer wall of the syringe 31 near the bottom end, a limiting hole 381 is formed in each fixing block 38, and the tail end of a limiting rod 22 is in inserted fit with the limiting hole 381. The needle cylinder 31 is sleeved with a second spring 33, the bottom end of the second spring 33 abuts against the top surface of the cylinder body 1, the bottom end of the needle cylinder 31 is tightly adhered with a needle 34, the needle 34 penetrates through the needle hole 12, the needle cylinder 31 is connected with a piston 35 in a sliding mode, a connecting rod 36 is embedded in the piston 35, and the top end of the connecting rod 36 is tightly adhered with a pressing handle 37.

In this embodiment, the outer wall of the syringe 31 is tightly bonded with the fixing ring 32, the fixing ring 32 is provided with two symmetrical positioning grooves 321, the inner wall of the barrel 1 is tightly bonded with two symmetrical positioning strips 13, the positioning grooves 321 are slidably connected with the corresponding positioning strips 13, the positioning grooves 321 and the positioning strips 13 are arranged to limit the movement of the syringe 31, and the limiting rod 22 is conveniently in plug-in fit with the limiting hole 381.

In this embodiment, the fixing block 38 is provided with an inclined surface 382, when the syringe 31 moves downward, the inclined surface 382 contacts with the end of the limiting rod 22, and under the action of the pressing force, the end of the limiting rod 22 slides along the inclined surface 382, so as to be conveniently inserted into and matched with the limiting hole 381.

When the disposable sterile insulin injection device is used, a user firstly presses the needle cylinder 31 downwards, the needle cylinder 21 slides downwards along the through hole 11, the positioning groove 321 slides along the positioning strip 13, the second spring 33 is compressed, meanwhile, the inclined surface 382 on the fixing block 38 is in contact with the tail end of the limiting rod 22, the limiting rod 22 moves outwards under the action of extrusion force, the first spring 24 is compressed, the needle 34 penetrates through the needle hole 12 and protrudes to the outside, when the limiting rod 22 moves to the limiting hole 381, the tail end of the limiting rod 22 is inserted into the limiting hole 381 under the action of the first spring 24, the needle cylinder 31 is fixed at the moment, and finally, the user can inject insulin.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A device for the single-use sterile injection of insulin, comprising a cartridge (1), characterized in that: two symmetrical limiting mechanisms (2) are arranged on the circumferential outer wall of the barrel body (1) close to the bottom end, and an injection device (3) is arranged in the barrel body (1); the limiting mechanism (2) comprises a shell (21) tightly bonded with the outer wall of the barrel (1), a limiting rod (22) is arranged in the shell (21), one end of the limiting rod (22) penetrates through the outer wall of the barrel (1) and extends into the barrel (1), a limiting ring (23) is coaxially and tightly bonded on the limiting rod (22), a first spring (24) is sleeved on the limiting rod (22), the other end of the limiting rod (22) penetrates through the shell (21) and protrudes to the outside, and a shifting block (25) is coaxially and tightly bonded at the other end of the limiting rod (22); the injection device (3) comprises a needle cylinder (31), two symmetrical fixing blocks (38) are tightly bonded on the outer wall of the needle cylinder (31) close to the bottom end, a limiting hole (381) is formed in each fixing block (38), and the tail end of each limiting rod (22) is in plug-in fit with the corresponding limiting hole (381).

2. The disposable sterile insulin infusion device of claim 1 wherein: through-hole (11) have been seted up to the top surface of barrel (1), cylinder (31) and through-hole (11) sliding connection, pinhole (12) have been seted up to the bottom surface of barrel (1).

3. The disposable sterile insulin infusion device of claim 1 wherein: the cover is equipped with second spring (33) on cylinder (31), the top surface of tight barrel (1) is supported to the bottom of second spring (33), the bottom of cylinder (31) closely bonds and has syringe needle (34), syringe needle (34) pass pinhole (12), sliding connection has piston (35) in cylinder (31), it is equipped with connecting rod (36) to inlay on piston (35), the top of connecting rod (36) closely bonds and has presses handle (37).

4. The disposable sterile insulin infusion device of claim 1 wherein: the outer wall of cylinder (31) closely bonds and has fixed ring (32), set up two symmetrical constant head tank (321) on fixed ring (32), closely bond on the inner wall of barrel (1) and have two symmetrical location strip (13), constant head tank (321) and corresponding location strip (13) sliding connection.

5. The disposable sterile insulin infusion device of claim 1 wherein: the fixed block (38) is provided with an inclined plane (382).

6. The disposable sterile insulin infusion device of claim 1 wherein: the cylinder body (1) and the needle cylinder (31) are both made of transparent PP materials.