FUJIAN BESTWAY MEDICAL POLYMER CORPORATION;福建省百仕韦医用高分子股份有限公司
发明人:
CHEN, Yongxi,陈永曦
申请号：
CNCN2017/084312
公开号：
WO2018/209490A1
申请日:
2017.05.15
申请国别(地区):
CN
年份:
2018
代理人:
摘要：
An indwelling needle, and particularly, an indwelling needle provided with a thin and step-type telescopic storage sleeve. The telescopic storage assembly (3) also comprises an operation handle (23). The front end of the operation handle (23) is provided with a structure that can be in a lapped connection with the rear end of a middle slide bar (33) and the rear end of a small slide bar (34) when the structure is retreated in position. The tail end of the operation handle (23) is fixedly connected to a needle seat (22) by means of a needle tube fixing cover (24). The needle seat (22) is a boss that protrudes from a needle tube cover (24). The boss protrudes in an inner cavity in the tail end of the small slide bar (34), and is fixedly connected to the needle tube fixing cover (24) or an integrally-formed structure or a split structure. A needle tube (21) passes through a through hole in the inner cavity of the small slide bar (34) and is inserted in the boss. A big slide bar (32) is fixedly connected to a connecting plug (31) or an integrally-formed structure or a split structure. By means of the indwelling needle, the step difference outside a duct seat is reduced, and the radial size and the axial size of the indwelling needle are greatly reduced, so that the whole indwelling needle is shorter, finer and more compact, and the operations are is extremely convenient. The use of a tongue piece of a stainless-steel spring plate allows a non-return function of the needle tube (21) to be more effective and safer.La présente invention concerne une aiguille à demeure, et en particulier, une aiguille à demeure pourvue d'un manchon de stockage télescopique de type mince et étagé. L'ensemble de stockage télescopique (3) comprend également une poignée d'actionnement (23). L'extrémité avant de la poignée d'actionnement (23) est pourvue d'une structure qui peut être en liaison à recouvrement avec l'extrémité arrière d'une barre coulissante intermédiaire (33) et l'extrémité arri
