Disposable anti-stabbing syringe
By incorporating a protective sleeve into the syringe and connecting it to the threaded syringe barrel, the problem of needle puncture injuries after syringe use is solved, achieving both safety and convenience, preventing cross-infection, and facilitating the collection of liquids.
Patent Information
- Application Number
- CN202422800158.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-11-18
AI Technical Summary
Existing disposable syringes often expose the puncture needle after use, which can lead to injuries to medical waste disposal personnel, posing safety hazards such as cross-infection and occupational exposure. In addition, the needle cap is easy to lose or is difficult to reattach, which can cause the puncture needle to be inserted off-center and injure the hand.
A disposable puncture-proof syringe was designed, which uses a protective sleeve connected to the syringe barrel by threads. The protective sleeve is rotated to cover the puncture needle to prevent it from being exposed. After use, the needle is hidden inside the sleeve. The protective sleeve can also store liquid. The needle cap is designed in a trumpet shape for easy separation.
It effectively prevents staff from being pricked by puncture needles when collecting syringes, reduces the risk of cross-infection, has a reasonable structure and is easy to use, the protective sleeve can also collect liquid to prevent contamination, and the needle cap design avoids the risk of detachment.
Smart Images
Figure CN223586338U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical instrument technical field, concretely relates to a disposable anti -stabbing syringe. BACKGROUND
[0002] The syringe is a common medical instrument, which is mainly used for extracting liquid in the body of a patient or injecting liquid into the body of a patient in a hospital clinic. However, most of the existing disposable syringes do not have the function of preventing stabbing, and they are generally discarded after use. When these used syringes are recycled, the medical waste disposal workers are easily stabbed by the exposed puncture needle of the syringe, and the stabbing of the contaminated puncture needle is an important transmission route of various viruses or bacteria in the hospital, and is easy to form cross infection and occupational exposure, which has a great safety hazard.
[0003] In addition, although the existing syringes are equipped with needle caps for protecting the puncture needle, the needle cap is usually made into a cylindrical shape with an open end, and the puncture needle is inserted from the opening. However, the needle cap is easy to be lost during the use of the syringe, and the opening of such needle cap needs to be clamped with the outer wall of the needle seat, and the inner diameter of the opening is small, which makes it difficult for the hospital staff to align the opening when inserting the puncture needle into the needle cap, and it is easy to stab the hand due to the insertion deviation of the puncture needle. SUMMARY
[0004] The technical problem to be solved by the utility model is to provide a disposable anti-stabbing syringe, which has the function of preventing stabbing, and can prevent the puncture needle from being exposed after use to stab the medical waste disposal workers, and can effectively eliminate the safety hazard. The technical scheme adopted is as follows:
[0005] A disposable anti-stabbing syringe, comprising a needle cylinder, a puncture needle and a needle cap, a piston and a push rod connected to the piston are movably arranged in the needle cylinder, a liquid suction tube head is arranged at the front end of the needle cylinder and communicates with the needle cylinder, the rear end of the puncture needle is installed on the liquid suction tube head, and the rear end opening of the needle cap is sleeved on the liquid suction tube head and wraps the puncture needle in it, characterized in that: the disposable anti-stabbing syringe further comprises a protective sleeve, an outer thread is arranged on the outer circumferential surface of the front part of the needle cylinder, the protective sleeve is sleeved on the front part of the needle cylinder, and the inner side wall of the protective sleeve is provided with an inner thread which is engaged with the outer thread.
[0006] In use, the needle cap is pulled out to expose the puncture needle, and then the syringe is used to draw liquid from or inject liquid into the patient; after the syringe is used, the protective sleeve is rotated relative to the front part of the needle cylinder, the engagement between the internal thread on the protective sleeve and the external thread on the needle cylinder is utilized to extend the protective sleeve to the front side of the front part of the needle cylinder and outside the puncture needle, thereby forming covering of the puncture needle and hiding the puncture needle in the protective sleeve, and then the syringe is discarded, so that the staff is prevented from being pricked by the puncture needle when the old syringe is recycled, and cross infection and other conditions are avoided, and safety hazards are effectively eliminated.
[0007] Generally, the needle cylinder is made of corrosion-resistant transparent plastic, and the surface of the needle cylinder is provided with scale lines.
[0008] As a preferred scheme of the utility model, the protective sleeve comprises a sleeve and a protective plate arranged at the front end of the sleeve, the sleeve is sleeved on the front part of the needle cylinder through the rear end opening thereof, and a through hole for the puncture needle to pass through is arranged at the center of the protective plate.
[0009] As a further preferred scheme of the utility model, the size of the through hole is greater than that of the pipette head, and the pipette head is arranged inside the through hole.
[0010] As a further preferred scheme of the utility model, the sleeve is made of transparent plastic (such as polypropylene).
[0011] As a preferred scheme of the utility model, the needle cap is trumpet-shaped, the cross-sectional area of the inner cavity of the needle cap gradually increases from the front end to the rear end, and the rear end opening size of the needle cap is greater than that of the pipette head.
[0012] Compared with the prior art, the utility model has the following advantages:
[0013] (1) the structure of the anti-puncture type syringe can form covering to the puncture needle from outside by the protective sleeve after the syringe is used, so that the puncture needle is hidden in the protective sleeve and then the syringe is discarded, so that the staff is prevented from being pricked and hurt when the waste syringe is recycled, and cross infection and other conditions are avoided, and the safety hidden danger can be greatly eliminated;
[0014] (2) the anti-puncture type syringe has reasonable structure, the protective sleeve is connected with the front part of the needle cylinder through threads, and only needs to be rotated to move the protective sleeve forward and backward relative to the needle cylinder, so that whether the puncture needle is covered or not is controlled, and the protective sleeve is convenient to use, and the protective sleeve can also be used for storing liquid to collect a small amount of liquid flowing out of the puncture needle, and prevent the liquid from flowing out of the protective sleeve and causing pollution. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is a structure schematic view of the anti-puncture type syringe of the preferred embodiment of the utility model.
[0016] Figure 2 is Figure 1 the anti-puncture type syringe shown in the state schematic view when the protective sleeve forms covering to the puncture needle. DETAILED DESCRIPTION
[0017] As Figure 1 , Figure 2 shown, the disposable anti-puncture type syringe comprises a needle cylinder 1, a puncture needle 2, a needle cap 3 and a protective sleeve 4, the front end of the needle cylinder 1 is provided with a liquid suction pipe head 11 in communication with the needle cylinder 1, the rear end of the puncture needle 2 is installed on the liquid suction pipe head 11, and the rear end opening of the needle cap 3 is sleeved on the liquid suction pipe head 11 and wraps the puncture needle 2 in the needle cap 3; the needle cylinder 1 is movably provided with a piston 5 and a push rod 6 connected to the piston 5, the front part of the needle cylinder 1 is provided with an outer thread 101, the protective sleeve 4 is sleeved on the front part of the needle cylinder 1, and the inner side wall of the protective sleeve 4 is provided with an inner thread 401 engaged with the outer thread 101.
[0018] In the embodiment, the needle cylinder 1 is made of corrosion-resistant transparent plastic, and the surface of the needle cylinder 1 is provided with a scale line. By arranging the scale line, the liquid content in the syringe needle cylinder 1 can be accurately measured.
[0019] In the embodiment, the protective sleeve 4 comprises a sleeve 41 made of transparent plastic (e.g. polypropylene) and a protective plate 42 arranged at the front end of the sleeve 41. The sleeve 41 is sleeved on the front part of the needle cylinder 1 through the rear end opening thereof. The protective plate 42 is provided with a through hole 4201 through which the puncture needle 2 can pass. The size of the through hole 4201 is larger than the liquid suction tube head 11, and the liquid suction tube head 11 is arranged inside the through hole 4201. With the structure, when the protective sleeve 4 is extended to the front side of the front part of the needle cylinder 1 and arranged outside the puncture needle 2, the protective sleeve 4 can cover the front side of the puncture needle 2 through the protective plate 42, and the protection effect is better. In addition, the protective sleeve 4 can also serve as a liquid storage function to collect a small amount of liquid flowing out of the puncture needle 2, so as to prevent the liquid from flowing out of the protective sleeve 4 and causing pollution.
[0020] In the embodiment, the needle cap 3 is in a trumpet shape, and the cross-sectional area of the inner cavity of the needle cap 3 gradually increases from the front end to the rear end. The size of the rear end opening of the needle cap 3 is larger than the liquid suction tube head 11. Thus, the rear end of the needle cap 3 and the liquid suction tube head 11 are not tightly nested. After the puncture needle 2 is arranged on the liquid suction tube head 11 of the needle cylinder 1, the needle cap 3 is easy to be separated from the liquid suction tube head 11, so as to avoid the situation that the puncture needle 2 is separated from the needle cylinder 1 when the needle cap 3 is pulled out too hard due to the difficulty in separating the needle cap 3 from the puncture needle 2 in the traditional syringe, and further prevent the occurrence of the puncture.
[0021] The following briefly describes the use method of the disposable anti-puncture syringe:
[0022] In use, the needle cap 3 is pulled out to expose the puncture needle 2, and then the syringe is used to extract liquid from the patient or inject liquid into the patient. After use, the protective sleeve 4 is rotated relative to the front part of the needle cylinder 1, and the engagement between the internal thread 401 on the protective sleeve 4 and the external thread 101 on the needle cylinder 1 is utilized to extend the protective sleeve 4 to the front side of the front part of the needle cylinder 1 and arrange the protective sleeve 4 outside the puncture needle 2. Thus, the puncture needle 2 is covered, and the puncture needle 2 is hidden in the protective sleeve 4, and then the syringe is discarded, so as to prevent the staff from being pricked by the puncture needle 2 when the waste syringe is recycled, and further avoid the occurrence of cross infection and other situations, so as to effectively eliminate the safety hazard.
[0023] In addition, it should be noted that the specific embodiments described in the specification can have different names and the like, and any equivalent or simple changes made according to the structure, features and principles of the utility model patent concept are included in the protection scope of the utility model patent. Those skilled in the art of the utility model can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, as long as they do not deviate from the structure of the utility model or exceed the range defined by the claims, and they should belong to the protection scope of the utility model.
Claims
1. A disposable puncture-proof syringe, comprising a syringe barrel, a puncture needle, and a needle cap, wherein a piston and a push rod connected to the piston are movably disposed inside the syringe barrel, a suction tube connected to the front end of the syringe barrel is provided, the rear end of the puncture needle is mounted on the suction tube, and the rear opening of the needle cap is fitted over the suction tube and encloses the puncture needle therein, characterized in that: The disposable anti-puncture syringe further comprises a protective sleeve, an outer thread is arranged on the outer circumferential surface of the front part of the needle cylinder, and an inner thread is arranged on the inner side wall of the protective sleeve and engaged with the outer thread.
2. A single-use, needle-stick injury preventing syringe as defined in claim 1, wherein: The protective sleeve comprises a sleeve and a protective plate arranged at the front end of the sleeve, the sleeve is sleeved on the front part of the needle cylinder through the rear end opening thereof, and a through hole for the puncture needle to pass through is arranged at the center of the protective plate.
3. A needle-stick-free disposable syringe as defined in claim 2 wherein: The size of the through hole is larger than that of the pipette head, and the pipette head is arranged inside the through hole.
4. A needle-stick-free disposable syringe as defined in claim 2 wherein: The sleeve is made of transparent plastic.
5. A needle-stick free disposable syringe as claimed in any one of claims 1 to 4 wherein: The needle cap is in a trumpet shape, the cross-sectional area of the inner cavity of the needle cap gradually increases from the front end to the rear end, and the opening size of the rear end of the needle cap is larger than that of the pipette head.