A medical device system may include a structure including a first elongate member, a line including a plurality of flexible members, and an actuator coupled to the line to selectively transmit force to at least the first elongate member. The structure may include a delivery configuration in which at least a portion of the structure is arranged to be percutaneously delivered to a bodily cavity. Respective portions of the flexible members may be intertwined together to form a braided portion of the line, and the line may include an unbraided portion secured at least to the first elongate member. The braided portion of the line may be located between the actuator and the first elongate member.
