Abstract:
The present invention relates to a prosthesis delivery device and to a handle assembly at the distal end of the delivery device. The handle assembly comprises a main handle and a nut disposed on the main handle. The nut comprises a first configuration in which the nut is engaged with the outer surface of the main handle and a second configuration in which the nut is disengaged from the outer surface of the main handle. Disengaging the nut from the main handle facilitates quick sheath retraction and deployment of at least the distal end of the prosthesis as well as recapturing the proximal end of the device within the sheath.
Abstract:
An endoluminal prosthesis introducer may include a rotatable inner cannula including a proximal end. The introducer may include a proximal tip disposed at the proximal end of the inner cannula and including a distal end. The introducer may include a retaining member including an engaging member extending radially outward. The retaining member may be disposed about the proximal end of the inner cannula. In response to rotation of the inner cannula with respect to the retaining member, the proximal tip may be longitudinally movable relative to the engaging member between a retaining configuration and a releasing configuration. The proximal tip and the engaging member may be spaced from one another by a greater longitudinal distance in the releasing configuration than in the retaining configuration.
Abstract:
A hybrid prosthesis for deployment in a body vessel includes a tubular stent body comprising a wire comprising a shape memory alloy, where the tubular stent body has a self-expanding portion comprising a distal portion of the wire and a balloon-expandable portion comprising a proximal portion of the wire. The shape memory alloy comprises an Af of less than 37° C. in the self-expanding portion and an As of greater than 37° C. in the balloon-expandable portion.
Abstract:
An endoluminal prosthesis introducer may include a rotatable inner cannula including a proximal end. The introducer may include a proximal tip disposed at the proximal end of the inner cannula and including a distal end. The introducer may include a retaining member including an engaging member extending radially outward. The retaining member may be disposed about the proximal end of the inner cannula. In response to rotation of the inner cannula with respect to the retaining member, the proximal tip may be longitudinally movable relative to the engaging member between a retaining configuration and a releasing configuration. The proximal tip and the engaging member may be spaced from one another by a greater longitudinal distance in the releasing configuration than in the retaining configuration.
Abstract:
A delivery system for delivering an endovascular prosthesis is disclosed. A handle assembly is disposed at the distal end of the delivery system. The handle assembly includes a main handle and a second handle disposed at least partially on the main handle and longitudinally moveable relative to the main handle. A trigger wire release mechanism is disposed in the interior or the main handle. A sheath is operatively connected to the second handle, such that longitudinal movement of the second handle relative to the main handle retracts the sheath in a distal direction. Movement of the trigger wire release mechanism from a first position to a second deployed position is prevented when the sheath is in the first position. Methods for accessing the iliac arteries and deploying an endovascular prosthesis therein using the delivery system and handle assembly are also disclosed.
Abstract:
The present embodiments provide stent-grafts. In one embodiment, a stent has proximal and distal ends, a plurality of strut segments disposed between the proximal and distal ends that enable expansion of the stent from a compressed state to a deployed state, and a series of distal apices disposed at the distal end of the stent. At least a portion of a first distal apex overlaps with graft material. First and second sutures are each coupled between a portion of the first distal apex and the graft material. The first and second sutures are positioned at different longitudinal zones that lack an axial overlap with one another.
Abstract:
The present embodiments provide systems and methods for deploying at least a portion of a stent. In one embodiment, the system comprises a cannula having an outer surface, and an auger having a plurality of turns coupled to the outer surface of the cannula. A stent has a portion dimensioned to be disposed within a valley of the auger. Rotation of the cannula and the auger advances the portion of the stent in a predetermined longitudinal direction.
Abstract:
A delivery device and methods for deploying an endovascular prosthesis within the common and internal iliac arteries are described. The device comprises a pusher catheter having a proximal end and a pusher extension extending proximally therefrom. A tubular prosthesis having a side branch is releasably coupled to the pusher extension. An extension dilator extends proximally from the proximal end of the pusher catheter, extends at least partially along an external surface of the main tubular body, into a distal end of the side branch and exits a proximal end of the tubular prosthesis. The extension dilator can be tracked over a guide wire which serves to both position the device within a vessel and also to facilitate cannulation of an internal iliac artery.
Abstract:
The present embodiments provide a method for delivering a stent comprising providing a stent in a delivery state, where the stent comprises a plurality of interconnected strut segments that enable expansion of the stent from a delivery state to a deployed state. Stacking a frontal surface of a first strut segment at least partially behind a rear surface of a second strut segment in the delivery state. Aligning a sharpened tip of a first barb at least partially circumferentially behind at least one strut segment in the delivery state such that the sharpened tip is not radially exposed. Expanding the stent from the delivery state to a deployed state, wherein the first barb is exposed to a patient in the deployed state.
Abstract:
The present embodiments provide a stent comprising a plurality of interconnected strut segments that enable expansion of the stent from a delivery state to a deployed state. A first strut segment and a second strut segment, of the plurality of strut segments, each comprise frontal surfaces facing radially inward in the deployed state and rear surfaces facing radially outward in the deployed state. The frontal surface of the first strut segment is at least partially stacked behind the rear surface of the second strut segment in the delivery state. A first barb coupled to at least a portion of the first strut segment. A sharpened tip of the first barb is aligned at least partially circumferentially behind at least one strut segment in the delivery state such that the sharpened tip is not radially exposed.