Systems and methods for sheathing an implantable device

摘要

Systems and methods are disclosed for delivering a stent to a lumen internal to a body of a patient and for sheathing a stent just prior to an insertion procedure. One embodiment comprises a delivery device having a partially sheathed configuration, a fully sheathed delivery configuration, and a deployed configuration. A panchor (combination pusher and anchor) is configured to engage and limit proximal and distal movement of the implantable device. An outer sheath surrounds a distal portion of an inner member and retains the implantable device near the distal end. The outer sheath is slidably moveable relative to the inner member to deploy the implantable device. Proximal movement of a trigger results in movement of the outer sheath to deploy the implantable device. A sheathing mechanism is configured to crimp and fully sheathe the implantable device prior to a deployment procedure.

主权项

1. A delivery system to sheathe a stent and deploy the stent within a lumen of a body of a patient, the delivery system comprising:
a delivery device that is configured to deploy a stent within the lumen of the body of a patient, the delivery device including a tubular member that comprises an outer sheath and an inner member; a translational member that is axially displaceable relative to the tubular member of the delivery device, the translational member comprising a tapered member disposed at a distal end of the translational member to translate axial movement of the translational member in a distal direction along the tubular member into radial force to compress and thereby crimp an unsheathed portion of the stent; and a plurality of sheathing fingers configured to crimp and sheathe an unsheathed portion of the stent, wherein the plurality of sheathing fingers are configured to engage the outer sheath of the tubular member of the delivery device and to engage the translational member as the translational member is moved distally along the tubular member of the delivery device, wherein distal movement of the translational member moves the plurality of sheathing fingers, which engage the outer sheath of the tubular member to move the outer sheath distally relative to a crimped portion of the stent to thereby sheathe the crimped portion of the stent.