External steerable fiber for use in endoluminal deployment of expandable devices
First Claim
1. A method of deploying a stent graft along a vessel having a flow lumen, said method comprising:
- providing an expandable stent graft including stent components along a leading portion of a catheter and constraining the stent graft toward a delivery configuration suitable for endoluminal delivery;
actuating a constraint mechanism to allow partial deployment of the stent graft toward an intermediate configuration sized between the delivery configuration and a fully deployed configuration;
wherein the constraint mechanism includes a primary sleeve wrapped circumferentially around the expandable stent graft to constrain the expandable stent graft toward the collapsed configuration, the primary sleeve comprising a sheet of material having first and second major surfaces and a plurality of openings extending from the first major surface to the second major surface; and
actuating a steering line, threaded through the expandable stent graft on a first side of the stent components at a first location and on an opposite second side of the stent components at a second location, the steering line arranged in a helical pattern along a length of the expandable stent graft and the steering line at least disposed between the expandable stent graft and the primary sleeve, to form a bend along at least a proximal portion of the stent graft to align at least the proximal portion of the stent graft orthogonally relative to the flow lumen of the vessel.
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Accused Products
Abstract
The present disclosure describes treatment of the vasculature of a patient with an expandable implant. The implant is constrained to a reduced delivery diameter for delivery within the vasculature by at least one sleeve. The implant can be constrained to other diameters, such as an intermediate diameter. The sleeves can be expanded, allowing for expansion of the diameter of the expandable implant, by disengaging a coupling member from the sleeve or sleeves from outside of the body of the patient. The expandable implant can comprise a steering line or lines which facilitate bending and steering of the expandable implant through the vasculature of a patient.
118 Citations
20 Claims
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1. A method of deploying a stent graft along a vessel having a flow lumen, said method comprising:
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providing an expandable stent graft including stent components along a leading portion of a catheter and constraining the stent graft toward a delivery configuration suitable for endoluminal delivery; actuating a constraint mechanism to allow partial deployment of the stent graft toward an intermediate configuration sized between the delivery configuration and a fully deployed configuration;
wherein the constraint mechanism includes a primary sleeve wrapped circumferentially around the expandable stent graft to constrain the expandable stent graft toward the collapsed configuration, the primary sleeve comprising a sheet of material having first and second major surfaces and a plurality of openings extending from the first major surface to the second major surface; andactuating a steering line, threaded through the expandable stent graft on a first side of the stent components at a first location and on an opposite second side of the stent components at a second location, the steering line arranged in a helical pattern along a length of the expandable stent graft and the steering line at least disposed between the expandable stent graft and the primary sleeve, to form a bend along at least a proximal portion of the stent graft to align at least the proximal portion of the stent graft orthogonally relative to the flow lumen of the vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of deploying a stent graft along a vessel having a flow lumen, said method comprising:
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providing a catheter assembly having a catheter having a leading end and a trailing end and comprising a main lumen extending between the leading end and the trailing end;
an expandable stent graft including stent components positioned at the leading end of the catheter, the expandable stent graft having a collapsed configuration for endoluminal delivery of the expandable stent graft to a treatment site and an expanded configuration having a diameter larger than the diameter of the collapsed configuration;
a primary sleeve wrapped circumferentially around the expandable stent graft, wherein the primary sleeve comprises a sheet of material having first and second major surfaces and a plurality of openings extending from the first major surface to the second major surface;
a primary coupling member cooperating with the openings for releasably coupling portions of the sheet to one another to constrain the expandable stent graft toward the collapsed configuration; and
at least one steering line threaded through the expandable stent graft on a first side of the stent components at a first location and on an opposite second side of the stent components at a second location, the at least one steering line arranged in a helical pattern along a length of the expandable stent graft and extending through the main lumen of the catheter and at least disposed between the expandable stent graft and the primary sleeve to allow selective bending of the expandable stent graft and non-concentric engagement of the expandable implant in relation to the catheter;positioning the expandable stent graft at or near a desired location along the vessel; displacing the primary coupling member from the openings to allow the expandable stent graft to expand outwardly from the collapsed configuration; and actuating the at least one steering line to form a bend along at least a proximal portion of the expandable stent graft to align at least the proximal portion of the expandable stent graft orthogonally relative with respect to the flow lumen of the vessel. - View Dependent Claims (18, 19, 20)
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Specification