A mechanical tensioning device includes a housing including a passageway and an opening that is in communication with the passageway. A plunger is movably disposed in the passageway. A first end of the plunger includes an inner member. A connector is coupled to the housing and includes a channel that is in communication with the passageway and a port in communication with the channel. A catheter is coupled to the connector and includes a lumen that is in communication with the channel and an expandable member. The inner member extends through the lumen and into the expandable member such that a distal end of the inner member is fixed to a distal end of the expandable member. The inner member is moveable between a first configuration in which the inner member is curved within the expandable member and a second configuration in which the inner member is less curved within the expandable member.
