Catheter system

A medical device system comprising:

• a structure comprising a plurality of elongate members including a first elongate member;
• a line comprising a plurality of flexible members;
• and
• an actuator coupled to the line to selectively transmit force to at least the first elongate member,
• wherein the structure includes a delivery configuration in which at least a portion of the structure is arranged to be operably percutaneously delivered to a bodily cavity, the actuator configured to vary tension in the line as the structure is moved between the delivery configuration and a deployed configuration, wherein respective portions of the flexible members are intertwined together to form a braided portion of the line, the line comprising an unbraided portion at an end of the line, the unbraided portion of the line overlapping at least part of the first elongate member, the unbraided portion of the line secured to at least the first elongate member at least at a location of the overlapping, and the braided portion of the line located between the actuator and the first elongate member, and
• wherein the structure is selectively moveable between:
• the delivery configuration in which the elongate members are arranged to be percutaneously deliverable to the bodily cavity, and
• the deployed configuration in which respective portions of the elongate members are further separated from each other as compared to the delivery configuration, and in which the structure is arranged to have a size too large to be percutaneously deliverable to the bodily cavity.