方法：用自行研制的新型左心耳封堵器经导管封堵20只犬的左心耳。
Methods: a new self - manufactured LAA occluder was implanted into the LAA through a transseptal catheter in 20 dogs.
目的：在犬的模型上评价新型左心耳封堵器的可操作性、安全性和生物相容性。
Objective: To evaluate the feasibility, safety and biocompatibility of a new LAA occlusion device by transcatheter in an experimental canine model(in vivo).
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