CN221084351U

CN221084351U - Disposable sterile syringe

Info

Publication number: CN221084351U
Application number: CN202321912475.9U
Authority: CN
Inventors: 窦雪锋; 张良利; 窦华书
Original assignee: Shandong Qiaopai Group Co ltd
Current assignee: Shandong Qiaopai Group Co ltd
Priority date: 2023-07-20
Filing date: 2023-07-20
Publication date: 2024-06-07
Anticipated expiration: 2033-07-20

Abstract

The utility model discloses a disposable sterile injector, which comprises an injection tube, a piston rod, a piston head, a needle head and a needle head cover, wherein the outer wall above the piston head is fixedly connected with a limit seat, the bottom end of the piston rod is movably connected with the limit seat, the inner walls of the two opposite sides of the inner groove of the injection tube are fixedly connected with telescopic bottom blocks, the opposite sides of the other two telescopic bottom blocks are respectively embedded and connected with a limit block in a sliding manner, and the opposite sides of the outer arc wall of the piston rod are respectively provided with a limit groove.

Description

Disposable sterile syringe

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a disposable sterile syringe.

Background

The disposable sterile injector is matched with the injection needle, hermetically packaged, sterile and disposable, is a tool commonly used in the medical industry at present, and is mainly used for subcutaneous, intramuscular and intravenous injection of liquid medicine, blood drawing or medicine dissolving and the like.

The searched patent publication number is: the disposable sterile injector comprises an injection cylinder and a push rod, wherein a clamping plate is fixedly bonded at an opening at one end of the injection cylinder, a needle seat is fixedly bonded at the other end of the injection cylinder, an injection needle is fixedly bonded on the needle seat, protrusions are fixedly bonded on two side walls of the inner wall of the injection cylinder, which are close to one end of the needle seat, first fixing blocks are fixedly bonded on two sides of the inner wall of the injection cylinder, which are close to one end of the needle seat, compression springs are sleeved on the first fixing blocks, the compression springs are fixedly bonded with the side walls of the injection cylinder, the other end of the compression springs are fixedly bonded on the lower surface of an insertion block, a push plate is fixedly bonded at one end of the push rod, a rubber plug is fixedly sleeved at the other end of the push rod, the rubber plug is tightly contacted with the inner wall of the injection cylinder, and a sliding groove is formed in the middle of the upper end and the lower end of the rubber plug; according to the scheme, after injection is completed, the piston is pushed to limit through the limit structure inside the tube body, so that the syringe cannot be reused, but when the scheme is not used, the piston structure is in non-contact with the scrapped limit structure, so that a distance between the piston structure of the syringe and the injection needle is in an empty state, and when liquid medicine is extracted, air exists inside the syringe, and the air is injected into a human body to form a very large potential safety hazard.

Disclosure of utility model

The utility model aims to provide a disposable sterile syringe, which solves the problems that the scrapped structure of the syringe provided in the background technology has empty space, so that injection air is injected into a body during injection and potential safety hazards exist.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The utility model provides a disposable aseptic syringe, includes injection tube, piston rod, piston head, syringe needle and syringe needle lid, piston head top outer wall fixedly connected with spacing seat, piston rod bottom and spacing seat swing joint, the injection tube inside groove is leaned on the equal fixedly connected with flexible backing block in relative both sides inner wall position, and two in addition the equal embedded sliding connection of relative one side of flexible backing block has the stopper, the spacing groove has all been seted up in the opposite both sides position of piston rod outer arc wall, stopper and spacing groove adaptation grafting.

Further, the piston head is attached to the inner arc wall of the injection tube and slides, the needle head is arranged at the bottom of the injection tube, and the needle head cover is inserted into the outer side position of the injection tube, which is close to the needle head.

Further, the rod groove is formed in the top of the limiting seat, the piston rod is connected with the rod groove in an adaptive mode, the rotary groove is formed in the rod groove, and the rotary block is fixedly connected to the outer arc wall of the bottom end of the piston rod.

Further, two sliding grooves are oppositely formed in the inner groove wall, close to the lower portion of the rotating groove, of the rod groove, and the rotating block, the sliding groove and the rotating groove are in fit sliding.

Further, a connecting strip is fixedly connected between the rotating groove and the rotating block, and a broken tooth trace is arranged in the middle of the connecting strip.

Further, the telescopic bottom block and the inner groove wall sliding by the limiting block are fixedly connected with springs, and the springs are fixedly connected with one side, which is close to the inner side, of the limiting block.

Further, one side of the limiting block, which is close to the inner groove of the telescopic bottom block, is connected with a sliding rod in a penetrating mode, and the sliding rod is fixedly connected to the inner groove wall of the telescopic bottom block.

Further, a slot is formed in the bottom of the piston head, an inserting block is fixedly connected to the bottom of the inner groove of the injection tube relative to the slot, and the inserting block is inserted into the slot.

Further, one side of the piston rod is fixedly connected with a liquid level plate, a liquid level ruler is arranged at the outer wall position of the injection tube relative to the liquid level plate, and the bottom end position of the liquid level plate is parallel to the bottom position of the piston head.

Compared with the prior art, the utility model has the beneficial effects that:

The scrapping structure of the sterile injector in the embodiment needs to rotate the piston rod after the sterile injector is used, so that the limiting block and the limiting groove are inserted into the sterile injector to realize limiting scrapping, and therefore, before the sterile injector is not used, the piston structure of the sterile injector can freely slide, the inside of the pipe body is not blocked, at the moment, the piston head can be tightly attached to the inner wall of the bottom end of the pipe body, air is prevented from being existing, and the safety of injection use is ensured; through the rotation of piston rod and spacing seat, adjust spacing groove position, and then make the syringe can normal use, accomplish the back at the injection, through rotating the adjustment position, then realize spacing grafting for the piston structure can't continue to slide, and then makes the syringe unable reuse, reduces the risk emergence of syringe secondary use.

Drawings

FIG. 1 is a schematic perspective view of a syringe according to the present utility model;

FIG. 2 is a schematic cross-sectional view of a syringe according to the present utility model;

FIG. 3 is a schematic perspective view of a piston rod rotating structure according to the present utility model;

FIG. 4 is an enlarged schematic view of the structure of FIG. 2A according to the present utility model;

FIG. 5 is an enlarged schematic view of the structure of FIG. 2B according to the present utility model;

fig. 6 is an enlarged view of fig. 2 at C in the present utility model.

The correspondence between the reference numerals and the component names in the drawings is as follows:

1. A syringe; 2. a piston rod; 3. a piston head; 4. a needle; 5. a needle cover; 6. a limit seat; 7. a telescoping bottom block; 8. a limiting block; 9. a limit groove; 10. a rod groove; 11. a rotary groove; 12. a chute; 13. a rotating block; 14. a spring; 15. a slide bar; 16. inserting blocks; 17. a slot; 18. a connecting strip; 19. a liquid level plate; 20. a liquid level gauge.

Detailed Description

Example 1

Please refer to fig. 1-6: the utility model provides a disposable aseptic syringe, including syringe 1, piston rod 2, piston head 3, syringe needle 4 and needle lid 5, piston head 3 and the laminating of syringe 1 inner arc wall slide, syringe 1 bottom is located to syringe 4, needle lid 5 peg graft in syringe 1 is close to the outside position of syringe 4, piston head 3 top outer wall fixedly connected with spacing seat 6, piston rod 2 bottom and spacing seat 6 swing joint, peg graft through the rotation of piston rod 2 and spacing seat 6, can realize limit structure's regulation, make aseptic syringe can not produce great space in the time of not using, guarantee the air of sucking in safe reasonable scope, the equal fixedly connected with flexible backing block 7 of relative both sides inner wall position that syringe 1 inside groove leaned on, limit block 8 has all been seted up to the equal embedded sliding connection in two other relative sides of flexible backing block 7, spacing groove 9 have all been seted up in the opposite both sides position of piston rod 2 outer arc wall, spacing block 8 is pegged graft with spacing groove 9 adaptation, peg graft through adjusting the back, and peg graft spacing, and then conveniently carry out spacing, prevent secondary use.

The top of the limit seat 6 is provided with a rod groove 10, the piston rod 2 is inserted and connected with the rod groove 10 in an adapting way, a rotary groove 11 is arranged in the rod groove 10, the outer arc wall at the bottom end of the piston rod 2 is fixedly connected with a rotary block 13, the rod groove 10 is close to the inner groove wall below the rotary groove 11, two sliding grooves 12 are oppositely arranged at the middle position of the connecting bar 18, the rotary block 13, the sliding grooves 12 and the rotary groove 11 are matched and slide, the position of the rotary block 13 is adjusted to the sliding groove 12 by rotating the piston rod 2, then the piston rod 2 can be inserted into the rod groove 10, the limit groove 9 above can be adjusted to be moved and adjusted to the position aligning with the limit block 8, further, the problem that more air exists when injection occurs is reduced, a connecting bar 18 is fixedly connected between the rotary groove 11 and the rotary block 13, the middle position of the connecting bar 18 is provided with broken teeth, the connecting bar 18 can ensure the fixing of the piston rod 2 and the limit seat 6 before use, the stability of the extraction injection sliding process is ensured, the spring 14 is fixedly connected between the sliding side of the limiting block 8 and the telescopic bottom block 7 and the inner groove wall of the telescopic bottom block 7, the inner groove wall of the telescopic bottom block 7 close to the spring 14 is fixedly connected with the slide bar 15, the slide bar 15 is connected with one side of the limiting block 8 close to the inner groove of the telescopic bottom block 7 in a penetrating way, the limiting block 8 is connected in a structure through rebound limiting, after the limiting groove 9 is aligned with the limiting block 8, the spring 14 rebounds, the disposable injector can be limited and scrapped, the secondary use is prevented, the bottom of the piston head 3 is provided with the slot 17, the slot 17 is connected with the insert block 16 in a plugging way in an inserting way, the insert block 16 is fixedly connected with the position of the inner groove bottom of the injection tube 1 relative to the slot 17, the piston head 3 at the bottom can not rotate along with the piston rod 2 when the piston rod 2 is rotated after the piston rod is scrapped after the piston rod is used, ensure stable and efficient scrapping.

Example two

As shown in fig. 1-2, further improvements were made over example 1:

For more convenient and visual checking the liquid medicine capacity of drawing in, fixedly connected with liquid level board 19 through outer arc one side on piston rod 2 top, liquid level chi 20 has been seted up to the outer wall position of syringe 1 relative liquid level board 19, liquid level board 19 bottom position is parallel with the bottom position of piston head 3, present disposable syringe is transparent plastics generally, then the scale direct spraying is on the body, the standard point of accurate high-efficient check does not have, therefore comparatively trouble when checking, follow the visual standard liquid level chi 20 of removal through liquid level board 19, promote the swift high-efficient that the liquid level was looked over.

Working principle: when in use, the package of the disposable injector is firstly torn, the sterile injector is taken out, then the injector 1 is held by hand, then the needle cover 5 is pulled out, then the medicine liquid is inserted into the medicine bottle through the needle 4, when in extraction, the piston rod 2 is pulled, the piston rod 2 drives the piston head 3 to slide in the injector 1 through the limit seat 6, then the medicine liquid can be sucked, because the piston head 3 slides and is extracted from the bottom of the inner groove of the injector 1, the extracted air is ensured to be in a safe injection range, the liquid level plate 19 on the outer side moves along with the liquid level ruler 20 in the extraction process, the extracted capacity is conveniently and intuitively observed, after the extraction is finished, the injection is carried out, when the injection is finished, the piston head 3 pushes one end of the needle 4, and then the plug 16 is plugged into the slot 17, the piston head 3 is fixed, when the piston rod 2 is rotated, the piston head 3 and the limiting seat 6 cannot rotate along with the piston rod 2, the rotating block 13 rotates in the rotating groove 11, the connecting bar 18 is broken during rotation, then the rotating block 13 rotates to the position of the sliding groove 12 and is inserted in a sliding mode, the piston rod 2 is inserted into the rod groove 10, in the rotating process, the limiting groove 9 rotates to the opposite direction from the vertical direction of the limiting block 8, after the piston rod 2 is inserted into the rod groove 10, the limiting groove 9 is aligned with the limiting block 8, at the moment, the limiting block 8 is pushed by spring 14 in a rebound mode, slides in the inner groove of the telescopic bottom block 7, and is inserted into the limiting groove 9 to complete limiting, so that the injector cannot be reused, and in the rebound insertion process of the limiting block 8, through sliding with the sliding rod 15, the accuracy and stability of the limiting block 8 insertion are guaranteed.

The foregoing description is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical solution of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. A disposable sterile syringe comprising a syringe (1), a piston rod (2), a piston head (3), a needle (4) and a needle cover (5), characterized in that: the piston head (3) top outer wall fixedly connected with spacing seat (6), piston rod (2) bottom and spacing seat (6) swing joint, the equal fixedly connected with flexible backing block (7) of relative both sides inner wall position that syringe (1) inside groove leaned on, and two in addition flexible backing block (7) are all embedded sliding connection in relative one side has stopper (8), spacing groove (9) have all been seted up in piston rod (2) outer arc wall opposite both sides position, stopper (8) are pegged graft with spacing groove (9) adaptation.

2. A disposable sterile syringe according to claim 1, wherein the piston head (3) slides against the inner arc wall of the syringe (1), the needle (4) is provided at the bottom of the syringe (1), and the needle cover (5) is inserted into the syringe (1) at a position close to the outer side of the needle (4).

3. The disposable sterile syringe according to claim 1, wherein the top of the limit seat (6) is provided with a rod groove (10), the piston rod (2) is connected with the rod groove (10) in an adapting way, the rod groove (10) is provided with a rotary groove (11) in an inner groove, and the outer arc wall at the bottom end of the piston rod (2) is fixedly connected with a rotary block (13).

4. A single use sterile syringe according to claim 3, characterised in that the lever channel (10) is provided with two opposing slide channels (12) adjacent to the inner channel wall below the swivel channel (11), the swivel block (13) being adapted to slide with both the slide channels (12) and the swivel channel (11).

5. A disposable sterile syringe according to claim 3, characterized in that a connecting strip (18) is fixedly connected between the rotating groove (11) and the rotating block (13), and a breaking tooth trace is arranged in the middle of the connecting strip (18).

6. A disposable sterile syringe according to claim 1, characterized in that the inner groove wall of the telescopic bottom block (7) and the stopper (8) sliding is fixedly connected with a spring (14), and the spring (14) is fixedly connected with the inner side of the stopper (8).

7. A disposable sterile syringe according to claim 1, characterized in that the side of the stopper (8) close to the inner groove of the telescopic bottom block (7) is connected with a sliding rod (15) in a penetrating way, and the sliding rod (15) is fixedly connected with the inner groove wall of the telescopic bottom block (7).

8. The disposable sterile syringe according to claim 1, wherein the bottom of the piston head (3) is provided with a slot (17), the bottom of the inner groove of the syringe (1) is fixedly connected with an insert block (16) opposite to the slot (17), and the insert block (16) is inserted into the slot (17).

9. A disposable sterile syringe according to claim 1, characterized in that one side of the piston rod (2) is fixedly connected with a liquid level plate (19), the outer wall of the syringe (1) opposite to the liquid level plate (19) is provided with a liquid level ruler (20), and the bottom end position of the liquid level plate (19) is parallel to the bottom position of the piston head (3).