Injection needle assembly

Abstract

The present invention provides an injection needle assembly, including a needle seat with a needle, a needle cap is arranged on the needle seat, the needle cap includes a fixed seat and a protective cap for sleeved on the needle, the protective cap is arranged at the front end of the fixed seat, the fixed seat includes a vertical plate with a side wall, the vertical plate and the side wall form a first cavity, the first cavity is used to sleeve on the needle seat, and the vertical plate is movably connected to the needle seat. The needle cap can be used to protect the needle to avoid stabbing medical workers, the vertical plate is movably connected to the needle seat, so that medical workers do not need to carry needle caps extra, and can be operated with one hand, which is convenient for medical workers to use.

Description

Technical Field

[0001] The invention relates to a puncture device, in particular to an injection needle assembly for a syringe with a safety protection device. Background Art

[0002] Various injections are an important part of clinical nursing work, and needlestick injuries often occur during the operation. Although there are measures to strengthen occupational protection education, prohibit the use of both hands to put back the needle cap, and use sharps boxes, disposable syringes used in clinical practice still have this safety hazard, and once a needlestick injury occurs, it will bring physical and psychological burdens to the injured, especially when the needle contacts patients with blood-borne infectious diseases. Therefore, syringes with safety protection devices are urgently needed in clinical practice. Summary of the invention

[0003] The present invention aims at the deficiencies in the prior art and proposes an injection needle assembly with a safety protection device, which can protect the needle to avoid stabbing medical workers and can be operated with one hand, making it easy for medical workers to use.

[0004] This solution is realized by the following technology: an injection needle assembly, including a needle seat with a needle, a needle cap is arranged on the needle seat, the needle cap includes a fixed seat and a protective cap for sleeved on the needle, the protective cap is arranged at the front end of the fixed seat, the fixed seat includes a vertical plate with side walls, the vertical plate and the side walls form a first cavity, the first cavity is used to sleeve on the needle seat, the vertical plate is movably connected to the needle seat. The needle cap can be used to protect the needle to avoid stabbing medical workers, the vertical plate is movably connected to the needle seat, so that medical workers do not need to carry needle caps extra, the vertical plate and the side walls form the first cavity, so that it can be used to sleeve on the needle seat.

[0005] A rotating shaft is arranged at the bottom of the vertical plate, and a retaining ring for being sleeved on the rotating shaft is arranged on the needle seat, so that the rotating shaft can be rotated conveniently, and then the rotation of the whole injection needle assembly can be realized, and the retaining ring is provided, and an opening is also provided on the retaining ring, so that the needle cap can be installed conveniently.

[0006] A plurality of protrusions are arranged on the needle seat, and a plurality of claws for clamping on the protrusions are arranged on the side wall. Two protrusions are arranged on the side of the needle seat away from the retaining ring, and there are two side walls, and a claw is arranged at one end of each of the two side walls away from the vertical plate. In this way, the entire needle cap can be fixed. When the medical worker finishes using the syringe, the claw is clamped on the protrusion to prevent the needle cap from falling off.

[0007] A baffle is arranged in the fixing seat, an arc groove is arranged on the baffle, the distance between the baffle and the rotating shaft is a, the distance between the front end of the needle seat and the rotating shaft is b, b<a. This can fix the fixing seat and prevent the fixing seat from moving forward.

[0008] The side wall above the baffle is inclined toward the center of the two side walls to reduce the space above the first cavity, thereby preventing the fixing seat from moving forward and serving as the fixing seat.

[0009] A spring piece is arranged on the needle seat below the retaining ring, and the spring piece is inclined toward the needle, that is, the spring piece is inclined toward the needle. In this way, during the use of the syringe, the needle cap will not stick to the syringe barrel under the action of the spring piece, thereby not affecting the medical staff's use of the syringe.

[0010] An elastic card for clamping the needle is arranged in the protective cap, so that when the needle protective cap is used to protect the needle, the needle can be prevented from falling out of the needle protective cap, and the elastic card is inclined toward the inner side of the needle protective cap to clamp the needle.

[0011] The vertical plate is arc-shaped, and a plurality of circular protrusions are arranged on the back of the vertical plate. Thus, after using the syringe, the medical worker holds the syringe in his hand and uses one finger to rotate and press the vertical plate to clamp the needle cap on the needle seat, thereby protecting the needle. The vertical plate is arc-shaped, which is convenient for the fingers to exert force, and has a plurality of circular protrusions, which can increase friction and also facilitate the medical worker to confirm that the fingers touch the vertical plate.

[0012] A guard plate for reinforcing the protective cap is also arranged between the fixing seat and the protective cap, one end of the guard plate is fixed to the fixing seat, and the other end of the guard plate is fixed to both sides of the protective cap, so that the protective cap and the fixing seat can be reinforced to prevent the protective cap from falling off due to excessive force.

[0013] It can be seen that compared with the prior art, the present invention has outstanding substantive features and significant progress, and the beneficial effects of its implementation are also obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a specific implementation mode of the present invention.

[0015] Figure 2 It is a structural schematic diagram of the needle seat.

[0016] Figure 3 A side view of the needle holder.

[0017] Figure 4 It is a schematic diagram of the structure of the needle cap.

[0018] Figure 5 for Figure 4 Rear view of.

[0019] Figure 6 Schematic diagram of the structure of the baffle.

[0020] Figure 7 This is a usage status diagram of a specific implementation mode of the present invention.

[0021] In the figure, 1 is a needle seat, 2 is a protective cap, 3 is a fixed seat, 4 is a vertical plate, 5 is a side wall, 6 is a rotating shaft, 7 is a spring, 8 is a guard plate, 9 is a needle, 10 is a retaining ring, 11 is a protrusion,

[0022] 12 is a baffle, 13 is a claw, 14 is an elastic card, 15 is a through hole, 16 is a circular protrusion, and 17 is an arc-shaped groove. DETAILED DESCRIPTION

[0023] In order to clearly describe the present solution, the present solution is explained through a specific implementation method and in combination with the accompanying drawings.

[0024] As can be seen from the accompanying drawings, the injection needle assembly of the present solution includes a needle seat 3 with a needle 9, a needle protective cap is arranged on the needle seat 3, the needle protective cap includes a fixed seat 3 and a protective cap 2 for sleeved on the needle 9, the protective cap 2 is arranged at the front end of the fixed seat 3, the fixed seat 3 includes a vertical plate 4 with a side wall 5, the vertical plate 4 and the side wall 5 form a first cavity, the first cavity is used to sleeve on the needle seat 1, and an elastic card 14 for clamping the needle 9 is arranged in the protective cap 2. The vertical plate 4 is movably connected to the needle seat 1.

[0025] A rotating shaft 6 is provided at the bottom of the vertical plate 4, and a retaining ring 10 for being mounted on the rotating shaft 6 is provided on the needle seat 1. A through hole 15 is provided above the rotating shaft 6, and the through hole 15 is used to pass through the retaining ring 10. A plurality of protrusions 11 are provided on the needle seat 1, and a plurality of claws 13 for being clamped on the protrusions 11 are provided on the side wall 5. Two protrusions 11 are provided on the side of the needle seat 1 away from the retaining ring, and there are two side walls 5, and a claw 13 is provided at one end of the two side walls 5 away from the vertical plate 4. A spring piece 7 is provided on the needle seat 1 below the retaining ring 10, and the spring piece 7 is inclined toward the direction of the needle 9. The vertical plate 4 is arc-shaped, and a plurality of circular protrusions 16 are provided on the back of the vertical plate 4.

[0026] A baffle 12 is arranged in the fixing seat 3, and an arc groove 17 is arranged on the baffle 12. The distance between the baffle 12 and the rotating shaft 6 is a, and the distance between the front end of the needle seat 1 and the rotating shaft 6 is b, where b<a. The side wall 5 above the baffle 12 is inclined inwardly, so that the space at the upper part of the first cavity is reduced, that is, both side walls are inclined toward the other side wall.

[0027] A guard plate 8 for reinforcing the protective cap 2 is also provided between the fixing seat 3 and the protective cap 2 . One end of the guard plate 8 is fixed to the fixing seat 3 , and the other end of the guard plate 8 is fixed to two sides of the protective cap 2 .

[0028] During use, the medical worker fixes the needle assembly of the present solution with the syringe tube, and then performs injection or extraction. After completion, the medical worker holds the syringe tube and pushes any finger against the vertical plate 4, pressing the entire needle protective cap toward the needle 9, and then the claw 13 is clamped on the protrusion 11, and the baffle 12 blocks the needle seat 1 to prevent the medical worker from exerting too much force and causing the needle seat to move forward. At the same time, the elastic card 14 also clamps the needle 9 to play a fixing role. In this way, the needle 9 enters the protective cap 2 to prevent the needle from causing harm to the medical worker or other people. The entire operation process can be completed with one hand.

Claims

1. An injection needle assembly, comprising a needle holder (1) with a needle (9), characterized in that: A needle protection cap is arranged on the needle seat (1), the needle protection cap comprises a fixing seat (3) and a protection cap (2) for being mounted on the needle (9), the protection cap (2) being arranged at the front end of the fixing seat (3), the fixing seat (3) comprising a vertical plate (4) with a side wall (5), the vertical plate (4) and the side wall (5) forming a first cavity, the first cavity being mounted on the needle seat (1), the vertical plate (4) being movably connected to the needle seat (1); a rotating shaft (6) is arranged at the bottom of the vertical plate (4), a retaining ring (10) for being mounted on the rotating shaft (6) is arranged on the needle seat (1); a plurality of protrusions (11) are arranged on the needle seat (1), and a plurality of protrusions (11) are arranged on the side wall ( A plurality of claws (13) for clamping on the protrusion (11) are arranged on the fixing seat (3); a baffle (12) is arranged in the fixing seat (3), and an arc-shaped groove (17) is arranged on the baffle (12); the distance between the baffle (12) and the rotating shaft (6) is a, and the distance between the front end of the needle seat (1) and the rotating shaft is b, b<a; the side wall (5) above the baffle (12) is inclined toward the center of the two side walls so that the space above the first cavity is reduced; a spring piece (7) is arranged on the needle seat (1) below the retaining ring (10), and the spring piece (7) is inclined toward the direction of the needle (9); and an elastic card (14) for clamping the needle (9) is arranged in the protective cap (2).

2. The injection needle assembly according to claim 1, characterized in that: Two protrusions (11) are provided on a side of the needle seat (1) away from the retaining ring (10), the side walls (5) are two, and a claw (13) is provided at each end of the two side walls (5) away from the vertical plate (4).

3. The injection needle assembly according to claim 1, characterized in that: The vertical plate (4) is arc-shaped, and a plurality of circular protrusions (16) are arranged on the back of the vertical plate (4).

4. The injection needle assembly according to claim 1, characterized in that: A guard plate (8) for reinforcing the protective cap (2) is also provided between the fixing seat (3) and the protective cap (2); one end of the guard plate (8) is fixed to the fixing seat (3), and the other end of the guard plate (8) is fixed to two sides of the protective cap (2).

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