Devices, systems, and methods for treating the left atrial appendage

A device for occluding an anatomical structure, comprising:

• an implant comprising:
• (a) a contact member including a tissue engaging feature configured to grip an inside tissue surface of the anatomical structure and to thereby rotate about a longitudinal axis in at least a first direction from a first position to at least a second position so as to twist the anatomical structure when the contact member is gripped against the inside tissue surface of the anatomical structure, wherein a distal-most end of the contact member is configured to rotate with a proximal-most end of the contact member during the rotation about the longitudinal axis;
• and (b) a securing element configured to move between a first position in which the securing element is decoupled from the contact member and a second position in which the securing element is coupled with the contact member, wherein the securing element is rotatably coupled to the contact member to thereby be configured to maintain the twist of the anatomical structure.