Safety syringe

Abstract

The invention relates to a safety syringe which comprises a syringe needle protection device and a syringe body. The syringe is mounted and fixed in the injector needle protection device; the syringeneedle protection device comprises a protection outer sleeve, an installation inner sleeve and a spring. The outer wall of the inner installation sleeve is sleeved with the spring, the spring is compressed and then installed in the protection outer sleeve, and the syringe needle protection device is formed. Compared with an existing protection device, the syringe is simple in structure, easy to produce and assemble and capable of effectively protecting the syringe needle part of the syringe; meanwhile, after syringe is completed, the piston rod of the syringe can be locked, and secondary use is effectively avoided.

Description

technical field [0001] The invention relates to a safety syringe with a syringe needle protection device. Background technique [0002] Disposable syringes are currently the most commonly used devices in the medical field. In order to prevent the used syringe needle from accidentally injuring the user, causing drug contamination, or the syringe is used twice, it is generally required to uniformly recycle the needle after the injection is completed; however, as For the further strict management of medical devices, some institutions have required that a special protection device be installed on the disposable syringe. After the injection is completed, the protection device is activated to protect the needle part to prevent accidental needle injury and prevent the needle from being separated from the syringe body. Safety of single-use syringes. [0003] Research on syringe needle protection devices and corresponding safety syringes was first carried out in European and America...

AI Technical Summary

Problems solved by technology

[0003] Research on syringe needle protection devices and corresponding safety syringes was first carried out in European and American countries, and most of the corresponding patented technical solutions were proposed by European and American companies. For example, the Chinese patent publication number is CN104411351A. Publication No. CN101437561A passive locking ring safety protection device for injection devices, Chinese Patent Publication No. CN1189222A disposable safety syringe, etc., were limited by the performance of molding materials and protection requirements in the early days, most of them had complex structures and inconvenient operations. high manufacturing cost

[0004] In recent years, as relevant domestic enterprises pay more attention to this field, related technologies have also appeared, such as a sliding sleeve needle protection device and a safety syringe with a Chinese patent publication number of CN203043181U, a needle protection device with a Chinese patent publication number of CN111529825A And safety syringes, a syringe needle protection device whose Chinese patent publication number is CN105854131A; this kind of product has played a certain role in protecting the needle, but part of the structure is still complicated

Images