An improved left auricle occluding device (100, 700) comprises a sealing disc (110, 710) and an anchoring device (120, 420, 520, 620) connected to each other, the sealing disc (110, 710) being internally provided with at least two flow-blocking films (115, 116, 715). An anchoring net (122, 422, 522, 622, 720) is a part where the anchoring device (120, 420, 520, 620) matches with a left auricle (b), and the anchoring net (122, 422, 522, 622, 720) has a boneless structure. The anchoring device (120, 420, 520, 620) has an overall boneless structure. The anchoring device (120, 420, 520, 620) is formed by weaving metal wires, and a far end of the anchoring device is opening-shaped. A near end of the anchoring device (120, 420, 520, 620) contracts and is connected to the sealing disc (110, 710) so as to form a conical net (121, 421, 521, 621). The far end of the anchoring device (120, 420, 520, 620) is opened and turned up towards the near end so as to form the anchoring net (122, 422, 522, 622, 720), and the conical net (121, 421, 521, 621) is surrounded by the anchoring net (122, 422, 522, 622, 720). The improved left auricle occluding device (100, 700) in multiple layers is capable of plugging the mouth of the left auricle, and is anchored in the left auricle (b) in a manner of evenly distributing force, such that local stress concentration is eliminated, repeatable release can be realized, and the opening part of the left auricle is effectively and reliably plugged.L'invention a pour objet des dispositifs d'occlusion de l'oreillette gauche améliorés (100, 700), lesquels dispositifs d'occlusion comprennent des poches hermétiques (110, 710) mutuellement reliées avec des dispositifs d'ancrage (120, 420, 520, 620), dans lesquelles poches hermétiques (110, 710) sont logées au moins deux membranes d'étranglement (115, 116, 715). Les dispositifs d'ancrage (120, 420, 520, 620) forment des réseaux d'ancrage (122, 422, 522, 622, 720) avec la position d'ajustement mutuelle de l'
