Method of transferring a stent device from a crimping head to an outer sheath of a stent device delivery system

摘要

A method of moving a stent device into an outer sheath of a stent device delivery system is disclosed. The stent device (4) is crimped into a collapsed configuration onto the loading mandrel (6). The loading mandrel is pushed toward the outer sheath as the engaging surfaces (10) resist relative longitudinal movement between the stent device and the loading mandrel to move the stent device into the outer sheath (16). Upon entering the outer sheath, the stent device expands radially until radially constrained by the outer sheath.

主权项

1. A method comprising:
providing a delivery system comprising an outer sheath; providing a stent device having a longitudinal lumen; providing a mandrel having a plurality of coaxial cylindrical projections along a length of the mandrel; securing the stent device onto the mandrel; and pushing the mandrel into the outer sheath while maintaining contact between the plurality of coaxial cylindrical projections of the loading mandrel and an inner surface of the stent device thereby releasing the stent device into the outer sheath, wherein the plurality of coaxial cylindrical projections distributes axial forces along a full extent of the inner surface of the stent device as the loading mandrel moves the stent device longitudinally into the outer sheath.