GUANGDONG HAIOU MEDICAL APPARATUS CO., LTD.;广东海鸥医疗器械股份有限公司
发明人:
ZHANG, Zhuoxuan,张卓旋,ZHANG, Jiangsheng,张江生
申请号：
CNCN2019/102577
公开号：
WO2020/048335A1
申请日:
2019.08.26
申请国别(地区):
CN
年份:
2020
代理人:
摘要：
A syringe, comprising: a barrel (1), comprising a needle accommodating cavity and a plunger accommodating cavity, the cross-sectional area of the needle accommodating cavity being less than that of the plunger accommodating cavity； a pull-back element (3), accommodated in the needle accommodating cavity, wherein a needle (5) is mounted on the pull-back element (3), and a cavity (36) is provided at an end of the pull-back element (3) proximate to the plunger accommodating cavity； a plunger (2), disposed in the plunger accommodating cavity and movable between a pushed-in position and a pulled-out position, wherein a head portion of the plunger (2) enters the cavity of the pull-back element (3) and is engaged therein when in the pushed-in position； an offset force structure, disposed in the cavity of the pull-back element (3) and/or the head portion of the plunger (2), wherein the head portion of the plunger (2) applies an offset force on the pull-back element (3) by means of the offset force structure, and when the head portion of the plunger (2) is moved to the pulled-out position, the offset force structure causes the pull-back element (3) and the needle (5) to tilt with respect to the axis of the barrel (1) in the plunger accommodating cavity by means of the offset pressure. After the syringe is used, the plunger (2) is pulled back, the pull-back element (3) is offset inside the barrel (1), and the needle (5) is offset in the same manner, such that the needle is prevented from being pushed out of the barrel (1) again, thereby improving safety during use.L'invention concerne une seringue comprenant : un cylindre (1) pourvu d'une cavité de réception d'aiguille et d'une cavité de réception de piston, la surface de section transversale de la cavité de réception d'aiguille étant inférieure à celle de la cavité de réception de piston ； un élément de rappel (3) logé dans la cavité de réception d'aiguille, une aiguille (5) étant montée sur l'élément de rappel (3), et une c
