Abdominal aortic aneurysms: systems and methods of use
First Claim
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1. A stent graft delivery system, comprising:
- a) a handle that includesi. a distal grip, andii. a handle body extending from one end of the distal grip, the handle defining a conduit and a track along a portion of the length of the distal grip and the handle body;
b) an outer sheath defining a lumen and extending through the conduit and moveable relative to the handle;
c) an internal lead screw assembly within the track, the internal lead screw assembly linked to the outer sheath and being moveable along a major axis of the conduit, and including a threaded portion that extends through the track;
d) a lead screw nut that extends externally around the handle body and is threadably engaged with the threaded portion of the internal lead screw assembly, whereby rotation of the lead screw nut while abutting the distal grip causes retraction of the internal lead screw assembly and the outer sheath relative to the handle, and wherein the lead screw nut simultaneously is slidable along the handle body while engaged with the internal lead screw assembly and the outer sheath without requiring rotation of the lead screw nut, thereby providing at least two mechanisms for causing retraction of the internal lead screw assembly and the outer sheath relative to the handle.
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Abstract
A stent graft delivery system includes an internal lead screw assembly within a track of a handle. The internal lead screw assembly is moveable along a major axis of the handle by rotation of a lead screw nut that extends about the handle and is threadably engaged with the threaded portion of the internal lead screw assembly. The lead screw nut is also slidable along the handle while engaged with the internal lead screw assembly. A stent graft system includes a proximal stent adjacent to a bare stent of angled struts joined by proximal and distal apices, wherein the proximal stent is nested within the bare stent.
608 Citations
21 Claims
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1. A stent graft delivery system, comprising:
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a) a handle that includes i. a distal grip, and ii. a handle body extending from one end of the distal grip, the handle defining a conduit and a track along a portion of the length of the distal grip and the handle body; b) an outer sheath defining a lumen and extending through the conduit and moveable relative to the handle; c) an internal lead screw assembly within the track, the internal lead screw assembly linked to the outer sheath and being moveable along a major axis of the conduit, and including a threaded portion that extends through the track; d) a lead screw nut that extends externally around the handle body and is threadably engaged with the threaded portion of the internal lead screw assembly, whereby rotation of the lead screw nut while abutting the distal grip causes retraction of the internal lead screw assembly and the outer sheath relative to the handle, and wherein the lead screw nut simultaneously is slidable along the handle body while engaged with the internal lead screw assembly and the outer sheath without requiring rotation of the lead screw nut, thereby providing at least two mechanisms for causing retraction of the internal lead screw assembly and the outer sheath relative to the handle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A stent graft delivery system, comprising,
a) an apex capture device assembly, including: -
1) a proximal apex capture portion, including i. a nose, wherein the nose defines at least one radial restraint that is substantially parallel to a major axis of the proximal capture portion; and ii. a plurality of tines extending distally from the nose, the tines radially distributed about the major axis radial to a most proximal radial restraint and substantially parallel to the major axis, 2) a distal apex capture portion defining recesses distributed radially about the major axis, the recesses mateable with the tines by relative movement of the proximal and distal apex capture portions along the major axis, 3) a plurality of bosses extending radially from the major axis between the nose and the distal apex capture portion and longitudinally and radially aligned with the recesses along the major axis in overlying relation with movement of the tines into mating relation with the recesses, 4) an elongate member to which the distal apex capture portion is fixed, the elongate member extending through the proximal apex capture portion, 5) a catheter component to which the proximal apex capture portion is fixed, through which the elongate member extends, whereby movement of the catheter component causes movement of the proximal apex portion along the major axis between a first position, in which the tines are mated with the recesses and overlie the bosses, and a second position, in which the tines are not mated with the recesses and do not overlie the bosses, b) a stent graft extending around the catheter component, the stent graft including; 1) a graft component extending around the catheter component, 2) a bare stent at a proximal end of the graft component, the bare stent including struts linked by apices, the struts extending between the tines, a portion of the apices extending between the bosses and the distal apex capture portion when the tines are mated to the recesses, and 3) at least one suprarenal barb extending from the bare stent into the radial restraint; c) a handle extending around the elongate member and the catheter component, and proximal to the proximal apex capture portion, the handle having a proximal end and a distal end; d) a leg clasp distal to the handle through which the elongate member and catheter component extend, the leg clasp including, 1) a barrel, 2) a spool extending from the barrel along a major longitudinal axis of the barrel, 3) a rim aligned along the major longitudinal axis of the barrel and at an end of the spool opposite that of the barrel, the rim extending about the entire circumference of the barrel and having a diameter greater than that of the spool but less than that of the barrel; and d) a support member fixed to the distal end of the handle body and extending proximally from the barrel, the support member extending externally around the elongate member and the catheter component. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification