SHANGHAI KINGS MEDICAL TECHNOLOGY CO., LTD.; LTD.;上海庆之医疗科技有限公司;SHANGHAI KINGS MEDICAL TECHNOLOGY CO.
发明人:
JIA, Luoqi,贾罗琦,JIA, Zongyi,贾宗毅
申请号：
CNCN2017/079527
公开号：
WO2017/173995A1
申请日:
2017.04.06
申请国别(地区):
CN
年份:
2017
代理人:
摘要：
Disclosed is a catheter with a bendable head and a variable bending radius, comprising a main body (2), and the head (1) being located at a distal end of and connected to the main body (2). The head (1) comprises a central tube (20) having at least one bendable section (11, 12)； at least one group of traction ropes (24, 25) respectively fixed to the corresponding one of the at least one bendable section (11, 12)； and a guide wire (30) threaded into the central tube (20). The guide wire (30) comprises a distal portion (31) and a proximal portion (32) connected with one other, with the stiffness of the distal portion (31) being less than that of the proximal portion (32). The guide wire (30) is movable relative to the central tube (20), so that when the position where the distal portion (31) is connected to the proximal portion (32) of the guide wire (30) is located at different positions of one (11 or 12) of the at least one bendable section (11, 12), the bending section (11 or 12) can bend at a different radius by controlling the corresponding group (24 or 25) of the at least one group of traction ropes (24, 25). The catheter is adaptable to being threaded into blood vessel bifurcations of various shapes, angles and bending lengths.L'invention concerne un cathéter muni d'une tête pliable et d'un rayon de courbure variable, comprenant un corps principal (2), et la tête (1) étant située au niveau d'une extrémité distale du corps principal (2) et étant reliée au corps principal (2). La tête (1) comprend un tube central (20) ayant au moins une section pliable (11, 12) ； au moins un groupe de câbles de traction (24, 25) respectivement fixés à une section correspondante de la ou des sections pliables (11, 12) ； et un fil-guide (30) vissé dans le tube central (20). Le fil-guide (30) comprend une partie distale (31) et une partie proximale (32) reliées l'une à l'autre, la rigidité de la partie distale (31) étant inférieure à celle de la partie proximale (32). Le fil-guide (
