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Safety type syringe

A syringe and safety technology, applied in the field of medical devices, can solve the problems of hidden safety hazards and inconvenience in needle handling, and achieve the effect of avoiding repeated use and preventing accidental needle injuries

Inactive Publication Date: 2016-12-14
王淑娟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the needles are exposed, which brings a lot of inconvenience to the handling of the needles, and usually, the nurses need to bring the syringes with the needles back to the nurse station for unified recycling after completing the injection for the patient. During this period, there are potential safety hazards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as Figure 1-Figure 5 As shown, the safety syringe includes a needle tube 4, an inner push rod 6, a silicone piston 3 arranged at the front end of the inner push rod 6, a needle head 1 arranged at the front end of the needle tube 4, and a jacket 5 is set on the outside of the needle tube 4. The rear portion of the needle tube 4 is provided with an external thread 9 and a retaining ring 13 in sequence, the rear portion of the outer cover 5 is provided with an internal thread 16 cooperating with the external thread 9, and the rear end of the outer cover 5 is additionally provided with a pull ring 10 and the The pull ring 10 is connected with the overcoat 5 by a tear line. The inner side of the pull ring 10 is provided with a plurality of wedge-shaped backstop blocks 14 along the circumferential direction. The end faces of the 9 sides lean against each other. The front portion of the needle tube 4 is provided with an annular stop groove 15, and the position correspon...

Embodiment 2

[0023] Such as Figure 6 As shown, in this embodiment, the inner diameter of the top of the outer casing 5 of the safety syringe is equal to the outer diameter of the needle tube 4, which is suitable for a thinner needle tube. Others are the same as embodiment 1.

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Abstract

The invention relates to a safety type syringe including a needle tube, an inner pushing rod, a silicone piston and a needle. The safety type syringe is characterized in that the outer side of the needle tube is provided with an outer sleeve, and the rear part of the needle tube is provided with an external thread and a retaining ring in turn. The back of the outer sleeve is provided with an inner thread matched with the outer thread, the rear end of the outer sleeve is provided with a pull ring additionally, and the pull ring is connected with the outer sleeve by a tearing wire, and the inner side of the pull ring is provided with a plurality of wedge-shaped anti-blocking pieces in the circumferential direction, the reverse end face of the wedge-shaped anti-blocking pieces is abutted against the end face of the retaining ring away from the external thread. The front part of the needle tube is provided with an annular limiting groove, and the outer sleeve is evenly provided with a plurality of tongue-shaped elastic pieces in the circumferential direction corresponding to the position of the front part of the internal thread, and the inner sides of the tongue-shaped elastic pieces are provided with limit protrusions matched with the annular limiting groove. The outer sleeve is provided with through holes I symmetrically in the circumferential direction corresponding to the position of the front part of the tongue-shaped elastic pieces. The safety type syringe is reliable to use, not only the needle wounding and the occurrence of cross-infection between doctors and patients are avoided, but also split management of the needle and the needle tube is facilitated.

Description

technical field [0001] The invention relates to a medical device, in particular to a safety syringe. Background technique [0002] The existing medical syringe consists of a needle tube, an inner push rod, a silicone piston arranged at the front end of the inner push rod, a needle head arranged at the front end of the needle tube, and a sheath arranged outside the needle head. When in use, the sheath on the outside of the needle needs to be removed. After the drug is absorbed and the injection is completed, the sheath can no longer be placed on the outside of the needle according to the operating specifications, so as to avoid infection caused by stabbing fingers. However, the needles are exposed, which brings a lot of inconvenience to the handling of the needles, and usually, the nurse needs to bring the syringe with the needle back to the nurse station for unified recycling after completing the injection for the patient. During this period, there are potential safety hazar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/178A61M5/32A61M5/50
CPCA61M5/178A61M5/3213A61M5/322A61M5/5086A61M2205/19A61M2205/273
Inventor 王翠辉
Owner 王淑娟
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