Safety disposable syringe

Abstract

The utility model discloses a safe disposable syringe, including needle cylinder, the upper end of needle cylinder is provided with the widening fixed pressing plate, the piston disc is slidably connected in needle cylinder, the piston rod is fixed on the piston disc, the top of piston rod is provided with the widening thumb pressing plate, the front and back of widening thumb pressing plate bottom all are provided with fixed link, and the lower extreme of fixed link penetrates widening fixed pressing plate and is connected with the upper surface fixed connection of movable pressing plate, and movable pressing plate surface is movably sleeved in needle cylinder. The utility model adopts the same operation posture of injection liquid medicine to suck liquid medicine, and the movable pressing plate is held and is clamped needle cylinder from below to above with index finger and middle finger, and the widening fixed pressing plate is pressed down with the thumb, makes movable pressing plate promote widening thumb pressing plate upwards through fixed link, and the piston disc is pulled upwards through piston rod with widening thumb pressing plate, and completes liquid medicine extraction, and the finger is easy to hold and clamp needle cylinder, improves the operation safety, and is very convenient to use, is especially suitable for one -handed operation.

Description

Technical Field

[0001] This utility model relates to the field of syringe technology, specifically a safe disposable syringe. Background Technology

[0002] Disposable syringes are common medical devices, primarily used for injecting liquid medications and drawing blood samples. The biggest advantage of disposable syringes is their safety; they are discarded after each use, effectively preventing cross-infection and reducing the risk of disease transmission.

[0003] When using a disposable syringe to inject liquid medication, the liquid medication must first be drawn from the vial into the syringe. In many cases, the vial cannot be placed directly on the table and the syringe cannot be operated with both hands to draw the liquid medication. Instead, one hand needs to hold the vial while the other hand operates the syringe to draw the liquid medication. This method requires skill and is easy to lose control of the syringe, which is inconvenient and dangerous.

[0004] Therefore, in order to improve the safety of single-handed operation of syringes for drawing liquid drugs, our company has designed and proposed a new syringe structure. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a safe disposable syringe to solve the problems of inconvenience and danger associated with single-handed operation of existing disposable syringes for drawing liquid medications.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A safe disposable syringe includes a syringe, a widened fixing pressure plate is provided at the upper end of the syringe, a piston disc is slidably connected inside the syringe, a piston rod is fixed on the piston disc, and a widened thumb pressure plate is provided at the top of the piston rod; The widened thumb pressure plate has fixing rods on both the front and back sides. The lower end of the fixing rod passes through the widened fixed pressure plate and is fixedly connected to the upper surface of the movable pressure plate. The movable pressure plate is movably sleeved on the surface of the syringe.

[0007] Preferably, both the widened fixed pressure plate and the movable pressure plate are elliptical, with their major axes perpendicular to each other and their minor axes longer than the outer diameter of the syringe.

[0008] Preferably, the movable pressure plate is parallel to the widened fixed pressure plate, and the fixed rod is perpendicular to the movable pressure plate and the widened thumb pressure plate.

[0009] Preferably, the syringe and the widened fixing plate are an integral structure, and the two ends of the fixing rod are welded and fixed to the widened thumb pressure plate and the movable pressure plate.

[0010] Preferably, the widened fixing plate provides space for the fixing rod through a through hole provided on the corresponding minor axis of the ellipse.

[0011] Preferably, the movable pressure plate is movably sleeved onto the syringe through a centrally located central hole.

[0012] Preferably, anti-slip textures are provided on the upper surface of the widened thumb pressure plate, the upper and lower surfaces of the widened fixed pressure plate near the sides, and the bottom of the movable pressure plate near the front and back.

[0013] Preferably, it also includes a needle installed on the bottom connecting tube of the syringe.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This invention employs the same operating posture as injecting liquid drugs to draw up liquid medications. The index and middle fingers support the movable pressure plate from bottom to top and clamp the syringe, while the thumb presses down to widen the fixed pressure plate. This causes the movable pressure plate to push the widened thumb pressure plate upwards via the fixed rod. The widened thumb pressure plate then pulls the piston plate upwards via the piston rod, completing the liquid drug extraction. The fingers can easily and stably clamp the syringe, improving operational safety. Moreover, it is very convenient to use, especially suitable for one-handed operation, solving the problems of inconvenience and danger associated with single-handed operation of existing disposable syringes for drawing up liquid medications. Attached Figure Description

[0015] Figure 1 This is a front view of the present utility model; Figure 2 This is a side view of the present invention; Figure 3 This is a top view of the present invention; Figure 4 This is a bottom view of the corresponding position of the movable pressure plate of this utility model; Figure 5 This is a top view of the corresponding position of the widened fixing pressure plate of this utility model; Figure 6 This is a cross-sectional view of the present invention; Figure 7 This is a side sectional view of the present invention.

[0016] In the diagram: 1. Syringe; 2. Widened fixing plate; 3. Piston disc; 4. Piston rod; 5. Widened thumb pressure plate; 6. Fixing rod; 7. Movable pressure plate; 8. Through hole; 9. Center hole; 10. Anti-slip texture; 11. Connecting tube; 12. Needle. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figure 1-7 As shown, this utility model provides a technical solution: a safe disposable syringe, including a syringe barrel 1, and a needle 12 installed on the bottom connecting tube 11 of the syringe barrel 1. A widened fixing pressure plate 2 is provided at the upper end of the syringe barrel 1. The syringe barrel 1 and the widened fixing pressure plate 2 are integral structures. A piston disc 3 is slidably connected inside the syringe barrel 1. A piston rod 4 is fixed on the piston disc 3. A widened thumb pressure plate 5 is provided at the top of the piston rod 4. The widened thumb pressure plate 5 has a fixing rod 6 on both the front and back sides. The lower end of the fixing rod 6 passes through the widened fixing pressure plate 2 and is fixedly connected to the upper surface of the movable pressure plate 7. The widened fixing pressure plate 2 makes way for the fixing rod 6 through the through hole 8 on the corresponding elliptical minor axis. The two ends of the fixing rod 6 are welded and fixed to the widened thumb pressure plate 5 and the movable pressure plate 7. The movable pressure plate 7 is movably sleeved on the surface of the syringe 1. The movable pressure plate 7 is movably sleeved on the syringe 1 through the central hole 9. Both the widened fixed pressure plate 2 and the movable pressure plate 7 are elliptical, and their major axes are perpendicular to each other. Their minor axis length is greater than the outer diameter of the syringe 1. The movable pressure plate 7 is parallel to the widened fixed pressure plate 2. The fixed rod 6 is perpendicular to the movable pressure plate 7 and the widened thumb pressure plate 5. Anti-slip textures 10 are provided on the upper surface of the widened thumb pressure plate 5, the upper and lower surfaces of the widened fixed pressure plate 2 near the sides, and the bottom of the movable pressure plate 7 near the front and back.

[0019] Working principle: The liquid medication is drawn using the same operating posture as when injecting liquid medication. The index and middle fingers support the movable pressure plate 7 from bottom to top and clamp the syringe 1. The thumb presses down on the widened fixed pressure plate 2, so that the movable pressure plate 7 pushes the widened thumb pressure plate 5 upward through the fixed rod 6. The widened thumb pressure plate 5 pulls the piston plate 3 upward through the piston rod 4 to complete the liquid medication extraction. The fingers can easily and stably clamp the syringe 1, which improves the safety of operation, is convenient to use, and is suitable for one-handed operation.

[0020] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safety-type disposable syringe, characterized in that: Includes a syringe (1), the upper end of which is provided with a widened fixing pressure plate (2), a piston disc (3) is slidably connected inside the syringe (1), a piston rod (4) is fixed on the piston disc (3), and a widened thumb pressure plate (5) is provided on the top of the piston rod (4). The widened thumb pressure plate (5) has a fixing rod (6) on both the front and back sides. The lower end of the fixing rod (6) passes through the widened fixing pressure plate (2) and is fixedly connected to the upper surface of the movable pressure plate (7). The movable pressure plate (7) is movably sleeved on the surface of the syringe (1).

2. A safety-type disposable syringe according to claim 1, characterized in that: The widened fixed pressure plate (2) and the movable pressure plate (7) are both elliptical, and their major axes are perpendicular to each other, while their minor axis length is greater than the outer diameter of the syringe (1).

3. A safety-type disposable syringe according to claim 1, characterized in that: The movable pressure plate (7) is parallel to the widened fixed pressure plate (2), and the fixed rod (6) is perpendicular to the movable pressure plate (7) and the widened thumb pressure plate (5).

4. A safety-type disposable syringe according to claim 1, characterized in that: The syringe (1) and the widened fixing plate (2) are an integral structure, and the two ends of the fixing rod (6) are welded and fixed to the widened thumb plate (5) and the movable plate (7).

5. A safety-type disposable syringe according to claim 1, characterized in that: The widened fixing plate (2) makes way for the fixing rod (6) through the through hole (8) set on the corresponding minor axis of the ellipse.

6. A safety-type disposable syringe according to claim 1, characterized in that: The movable pressure plate (7) is movably sleeved on the syringe (1) through the central hole (9) set in the center.

7. A safety-type disposable syringe according to claim 1, characterized in that: Anti-slip textures (10) are provided on the upper surface of the widened thumb pressure plate (5), the upper and lower surfaces of the widened fixed pressure plate (2) near the sides, and the bottom of the movable pressure plate (7) near the front and back.

8. A safety-type disposable syringe according to claim 1, characterized in that: It also includes a needle (12) mounted on the bottom connecting tube (11) of the syringe (1).

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