5R MED TECHNOLOGY (CHENGDU) CO., LTD; LTD;5R MED TECHNOLOGY (CHENGDU) CO.;成都五义医疗科技有限公司
发明人:
ZHU, Moshu,朱莫恕
申请号：
CNCN2018/089172
公开号：
WO2018/219311A1
申请日:
2018.05.31
申请国别(地区):
CN
年份:
2018
代理人:
摘要：
Disclosed is a cannula assembly with a balloon for direct puncturing, the cannula assembly comprising a first sealing assembly and a second sealing assembly, wherein the second sealing assembly comprises a lower housing and a hollow cannula connected thereto and extending towards a distal end thereof, the first sealing assembly, the second sealing assembly and the hollow cannula comprise instrument passages communicated and substantially aligned with each other, and the hollow cannula comprises an inner cylindrical surface, an outer cylindrical surface and a cannula wall therebetween； the distal end of the hollow cannula further comprises an open cannula lip, the cannula lip comprises an inclined cylindrical surface between an open lip portion and a transition lip portion, and the inner cylindrical surface and the inclined cylindrical surface define an inclined cannula wall； the balloon assembly comprises a balloon axis, a balloon lip and a balloon body connected thereto, and the balloon lip extends towards the distal end to form an inclined balloon wall matched with the inclined cannula wall in shape and size； the balloon lip extends towards a proximal end, and is connected to the balloon body and is in smooth transition with same； and an included angle formed between the balloon plane of the balloon body and the balloon axis is an acute angle.L'invention concerne un ensemble canule avec un ballonnet pour ponction directe, l'ensemble canule comprenant un premier ensemble d'étanchéité et un second ensemble d'étanchéité, le second ensemble d'étanchéité comprenant un boîtier inférieur et une canule creuse reliée à celui-ci et s'étendant vers une extrémité distale de celui-ci, le premier ensemble d'étanchéité, le second ensemble d'étanchéité et la canule creuse comprenant des passages d'instrument en communication et sensiblement alignés l'un avec l'autre, et la canule creuse comprenant une surface cylindrique interne, une surface cylindrique externe et une paroi de ca
