SYNAPTIC MEDICAL (BEIJING) CO., LTD.;心诺普医疗技术（北京）有限公司
发明人:
PENG, Bo,彭博,GONG, Jie,龚杰,FENG, Ji,冯骥
申请号：
CNCN2019/128137
公开号：
WO2020/135468A1
申请日:
2019.12.25
申请国别(地区):
CN
年份:
2020
代理人:
摘要：
A cryoablation catheter (10, 200), comprising: a main tube (12, 210), the main tube (12, 210) having a distal end, a proximal end, and at least one chamber； an expansion element (31, 230) sleeved on the distal end of the main catheter (12, 210)； a fluid delivery tube (14, 410, 240) extending into the expansion element (21, 230) by means of the chamber of the main tube (12, 210), a distal end of the fluid delivery tube (14, 410, 240) being provided with an opening (42, 420), and a cryogenic fluid being ejected out from the opening (42, 420)； and a fluid recovery path (51, 510) extending into the expansion element (21, 230) by means of the chamber of the main tube (12, 210), a distal end of the fluid recovery path (51, 510) being communicated with a recovery hole (52) of the distal end of the main tube (12, 210), and the cryogenic fluid flowing into the fluid recovery path (51, 510) via the recovery hole (52), wherein the opening (42, 420) is linearly provided along the lengthwise direction of the distal end of the main tube (12, 210). The cryoablation catheter (10, 200) is able to form an ablation line on tissue to be ablated, and can implement a one-step ablation success rate close to the success rate of surgery by means of a single integrally scribed continuous ablation or a few integrally scribed continuous ablations.La présente invention concerne un cathéter de cryo-ablation (10, 200), comprenant : un tube principal (12, 210), le tube principal (12, 210) ayant une extrémité distale, une extrémité proximale et au moins une chambre ； un élément d'expansion (31, 230) emmanché sur l'extrémité distale du cathéter principal (12, 210) ； un tube de distribution de liquide (14, 410, 240) s'étendant dans l'élément d'expansion (21, 230) au moyen de la chambre du tube principal (12, 210), une extrémité distale du tube de distribution de liquide (14, 410, 240) comportant une ouverture (42, 420), et un liquide cryogénique étant éjecté hors de l'ouverture (42, 420) ； et un traj
