Occluder, occluder fastening system, and fastening method

Abstract

Disclosed are an occluder, an occluder fastening system and a fastening method therefor. The occluder includes a first occluding portion and a second occluding portion. A distal end of the first occluding portion is provided with a connecting bolt extending towards the second occluding portion, and a first external thread is provided on a side wall of the connecting bolt. A protrusion portion is provided at a proximal end of the second occluding portion with a through hole provided therein, and a second external thread is provided on a side wall of the protrusion portion. The thread direction of the first external thread is opposite to the thread direction of the second external thread, and a proximal end of the connecting bolt can extend through the through hole and is screwed to a nut. In cooperation with a pushing device, such designed occluder (10) achieves high-efficiency, stable and reliable fastening.

Dependencies are inferred from the claim text.