Hepatitis B nursing automatic injector

Abstract

The invention relates to the technical field of injectors, in particular to an automatic injector for hepatitis B nursing. Comprising a needle tube, a needle nozzle, a first spring, a sleeve, a limiting rod, limiting teeth, a fixing rod, a second spring, scale marks and a protective cover, the multiple scale marks are arranged on a tube body of the needle tube, one end of the needle nozzle is arranged at one end of the needle tube, the end, away from the needle tube, of the needle nozzle is sleeved with a needle head, and the end, provided with the needle nozzle, of the needle tube is sleeved with the protective cover. The piston is arranged in the needle tube, one end of the push rod movably extends into the end, away from the needle nozzle, of the needle tube and is fixedly inserted in the piston, and the first spring is placed in the needle tube. The automatic injection device has the beneficial effects that the piston continuously abuts against the needle head through the first spring arranged in the needle tube, automatic injection can be conducted, the pushing speed can be automatically controlled, mutual buckling with the fixing rod is achieved through the limiting rod arranged on one side of the push rod and the limiting teeth arranged on one side of the rod body of the limiting rod, and the safety of injection is improved. And the push rod can be fixed at any position.

Description

Technical Field

[0001] The present invention relates to the technical field of syringes, and particularly relates to an automatic syringe for hepatitis B care. Background Art

[0002] At present, the syringes used clinically mainly consist of a needle, a syringe barrel, a piston, and a plunger rod. When injecting a patient with such a syringe, medical staff need to manually control the pushing speed of the plunger rod, so the flow rate of the liquid medicine is very unstable, which greatly increases the working difficulty for medical staff. Summary of the Invention

[0003] The purpose of the present invention is to solve the deficiencies in the above-mentioned technology. The technical solution adopted by the present invention is as follows:

[0004] An automatic syringe for hepatitis B care, comprising a syringe barrel, a needle tip, a needle, a piston, a push rod, a first spring, a sleeve, a limiting rod, limiting teeth, a fixed rod, a second spring, scale lines, and a protective cover. A plurality of the scale lines are provided on the barrel of the syringe barrel. One end of the needle tip is arranged at one end of the syringe barrel, the needle is sleeved on the end of the needle tip away from the syringe barrel, the protective cover is sleeved on the end of the syringe barrel provided with the needle tip, the piston is arranged inside the syringe barrel, one end of the push rod movably extends into the end of the syringe barrel away from the needle tip and is inserted and fixed inside the piston, and the first spring is placed inside the syringe barrel and sleeved on the rod body of the push rod.

[0005] As an improvement, the plurality of scale lines are equally spaced on one side of the syringe barrel.

[0006] As an improvement, the piston is adapted to the syringe barrel and is arranged close to the needle tip.

[0007] As an improvement, one end of the limiting rod is fixed to the end of the push rod away from the piston, and the end away from the push rod is arranged close to the end of the syringe barrel provided with the needle tip.

[0008] As an improvement, one end of the fixed rod movably passes through one side of the sleeve and abuts between two limiting teeth.

[0009] As an improvement, one end of the limiting rod is connected and fixed to one side of the push rod. A plurality of the limiting teeth are equally spaced on the side of the limiting rod away from the syringe barrel. The sleeve is movably sleeved on the rod body of the limiting rod, and one side of the sleeve is connected and fixed to one side of the syringe barrel. An articulated member is provided on the side of the sleeve away from the syringe barrel. One end of the articulated member away from the sleeve is connected and fixed to one side of the fixed rod. One end of the second spring is connected and fixed to the lower surface of the fixed rod, and the end of the second spring away from the fixed rod is connected and fixed to one side of the sleeve.

[0010] The beneficial effects of the present invention are as follows:

[0011] An automatic syringe for hepatitis B care according to the present invention enables the piston to be continuously pushed towards the needle tip by a first spring disposed inside the syringe barrel, so that automatic injection can be carried out and the pushing speed can be automatically controlled. By providing a limiting rod on one side of the push rod and limiting teeth on one side of its rod body, the push rod can be engaged with a fixed rod, so that the push rod can be fixed at any position. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic cross-sectional front view structure diagram of the present invention;

[0013] Figure 2 of the present invention Figure 1 is an enlarged structure diagram of part A in

[0014] Corresponding Table of Reference Numerals in the Drawings:

[0015] 1. Syringe barrel; 2. Needle nozzle; 3. Needle tip; 4. Piston; 5. Push rod; 6. First spring; 7. Sleeve; 8. Limiting rod; 9. Limiting teeth; 10. Fixed rod; 11. Hinge member; 12. Second spring; 13. Scale line; 14. Protective cover. DETAILED DESCRIPTION OF THE INVENTION

[0016] The following further describes the specific embodiments of the present invention with reference to the drawings. The same components are denoted by the same reference numerals.

[0017] It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0018] In order to make the content of the present invention more clearly understood, 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.

[0019] As Figure 1-2As shown in the figure, an automatic syringe for hepatitis B care has a needle 3 sleeved on the needle tip 2. One end of the needle tip 2 is fixedly connected to one end of the syringe barrel 1. Inside the syringe barrel 1, there is a piston 4, and on one side of the piston 4, there is a push rod 5. A first spring 6 is sleeved on the push rod 5, and the first spring 6 continuously pushes the piston 4 towards the position of the needle tip 2. A protective cover 14 is sleeved on the syringe barrel 1 near the needle 3. One end of the limiting rod 8 is fixedly connected to one side of the push rod 5, and on one side of the limiting rod 8, there are a plurality of limiting teeth 9 arranged at equal intervals. Through the plurality of limiting teeth 9, the push rod 5 drives the piston 4 to stay at any position inside the syringe barrel 1. A sleeve 7 is sleeved on the limiting rod 8, and one side of the sleeve 7 is fixedly connected to one side of the syringe barrel 1. On one side of the syringe barrel 1, there are a plurality of scale lines 13 arranged at equal intervals. One side of the fixing rod 10 is connected to one side of the sleeve 7 through a hinge 11, and one end of the fixing rod 10 movably passes through the sleeve 7 and abuts against one side of the limiting teeth 9 to fix the positions of the piston 4 and the push rod 5. There is a second spring between the fixing rod 10 and the sleeve 7.

[0020] When the present invention is in use, remove the protective cover 14, hold the syringe barrel 1 by hand, place the needle 3 in the medicine to be drawn, and press the fixing rod 10 downward near the position of the second spring 12 with a finger, so that one end of the fixing rod 10 moves out from inside the limiting teeth 9. Pull the push rod 5 in the direction away from the needle with the other hand, so that the medicine is sucked into the syringe barrel 1. Pay attention to observing the scale line. When the medicine reaches the required scale line position, stop pulling the push rod 5 and release the fixing rod 10, so that one end of the fixing rod 10 abuts against one side of the limiting teeth 9. When injecting, hold the syringe barrel 1 by hand and press the fixing rod 10. When the limiting teeth 9 lose the resistance of the fixing rod 10, the first spring 6 drives the piston 4 to move towards the position of the needle tip 2, so that the medicine flows out from the needle 3.

[0021] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacements or changes, and all should be covered within the protection scope of the present invention.

Claims

1. An automatic syringe for hepatitis B care, characterized in that, It includes a syringe tube (1), a needle tip (2), a needle (3), a piston (4), a push rod (5), a first spring (6), a sleeve (7), a limit rod (8), limit teeth (9), a fixed rod (10), a second spring (12), scale lines (13) and a protective cover (14). A plurality of the scale lines (13) are provided on the tube body of the syringe tube (1). One end of the needle tip (2) is arranged at one end of the syringe tube (1). The needle (3) is sleeved on the end of the needle tip (2) away from the syringe tube (1). The protective cover (14) is sleeved on the end of the syringe tube (1) provided with the needle tip (2). The piston (4) is arranged inside the syringe tube (1). One end of the push rod (5) movably extends into the end of the syringe tube (1) away from the needle tip (2) and is inserted and fixed inside the piston (4). The first spring (6) is placed inside the syringe tube (1) and sleeved on the rod body of the push rod (5).

2. The automatic syringe for hepatitis B care according to claim 1, characterized in that, The plurality of the scale lines (13) are equally spaced on one side of the syringe tube (1).

3. The automatic syringe for hepatitis B care according to claim 2, wherein The piston (4) is adapted to the syringe tube (1) and is arranged close to the needle tip (2).

4. The automatic syringe for hepatitis B care according to claim 3, wherein One end of the limit rod (8) is fixed to the end of the push rod (5) away from the piston (4), and the end away from the push rod (5) is arranged close to the end of the syringe tube (1) provided with the needle tip (2).

5. The automatic syringe for hepatitis B care according to claim 1, characterized in that, One end of the fixed rod (10) movably passes through one side of the sleeve (7) and abuts between two limit teeth (9).

6. The automatic syringe for hepatitis B care according to claim 5, wherein, One end of the limit rod (8) is connected and fixed to one side of the push rod (5). A plurality of the limit teeth (9) are equally spaced on the side of the limit rod (8) away from the syringe tube (1). The sleeve (7) is movably sleeved on the rod body of the limit rod (8), and one side of the sleeve (7) is connected and fixed to one side of the syringe tube (1). A hinge member (11) is provided on the side of the sleeve (7) away from the syringe tube (1). One end of the hinge member (11) away from the sleeve (7) is connected and fixed to one side of the fixed rod (10). One end of the second spring (12) is connected and fixed to the lower surface of the fixed rod (10). One end of the second spring (12) away from the fixed rod (10) is connected and fixed to one side of the sleeve (7).

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