| 主权项 |
1. A medical device, comprising:
an elongate member defining a lumen, the elongate member having a retention member disposed within the lumen, the retention member including a first portion, a second portion, and a third portion, the third portion being disposed between the first portion and the second portion; a pusher configured to be at least partially disposed within the lumen defined by the elongate member, the pusher being configured to move from a first position within the lumen to a second position within the lumen in a first direction; and a tissue anchor having a first arm portion, a second arm portion, and a base portion extending between the first arm portion and the second arm portion, the tissue anchor having a first configuration and a second configuration, the first arm portion being substantially linear when the tissue anchor is in the first configuration, the first arm portion being non-linear when the tissue anchor is in the second configuration, the tissue anchor being biased to the second configuration, the tissue anchor being configured to be disposed within the lumen defined by the elongate member such that the first portion of the retention member engages the first arm portion of the tissue anchor and the second portion of the retention member engages the second arm portion of the tissue anchor to help retain the tissue anchor in the first configuration, the pusher is configured to push the tissue anchor out of the lumen by moving from the first position to the second position in the first direction, wherein when moving from the first position to the second position, the third portion of the retention member is configured to flex in the first direction from a first orientation to a second orientation to permit the tissue anchor to move beyond the retention member. |
