Stent and stent-graft having one or more conformance struts
AssigneeMED Institute, Inc.
InventorDavid E. Orr
Life of this patent
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Abstract
A stent includes a main body having proximal and distal ends, and at least one conformance strut coupled to the proximal end of the main body. A portion of the at least one conformance strut extends proximal to a proximal end of a graft material in a compressed delivery configuration, and further is aligned inside the proximal end of the graft material in an expanded deployed configuration. In the deployed configuration, the proximal conformance strut may at least partially encircle the graft material just distal to the proximal end of the graft material, which may reduce the likelihood of infolding at the proximal edge of the graft material and potential endoleaks.
Claims20
A stent-graft for use in a medical procedure, the stent-graft comprising:
- a substantially tubular graft material;
- and
- at least one stent coupled to the graft material and having compressed and deployed configurations,
- where a proximal end of the stent comprises at least one conformance strut having a compressed delivery configuration and an expanded deployed configuration, and
- where, in the compressed delivery configuration, the at least one conformance strut comprises an outwardly extending loop that is substantially parallel to a longitudinal axis of the stent and extends beyond the proximal end of the graft material, and
- where, in the deployed configuration, the at least one conformance strut is disposed substantially perpendicular to the longitudinal axis and is aligned inside the proximal end of the graft material.
A method for deploying a stent-graft, the method comprising:
- providing a stent-graft comprising a substantially tubular graft material and at least one stent coupled to the graft material;
- providing at least one conformance strut at a proximal end of the stent;
- delivering the stent-graft with the stent and the at least one conformance strut in compressed delivery configurations, where in the compressed delivery configuration the at least one conformance strut comprises an outwardly extending loop that is substantially parallel to a longitudinal axis of the stent and extends beyond a proximal end of the graft material;
- deploying the stent to cause the stent and the graft material to radially expand;
- and
- deploying the at least one conformance strut, where in the deployed configuration the at least one conformance strut is disposed substantially perpendicular to the longitudinal axis and is aligned inside the proximal end of the graft material.
A stent for use in a medical procedure, the stent comprising:
- a main body having proximal and distal ends, and further comprising at least one conformance strut coupled to the proximal end of the main body, where the main body and the at least one conformance strut each comprise a compressed delivery configuration and each comprise an expanded deployed configuration,
- where the main body comprises a zig-zag shape in the deployed configuration comprising a plurality of substantially straight first segments and second segments having a plurality of proximal and distal apices disposed therebetween,
- where the at least one conformance strut comprises a first end, a second end, and a central region formed therebetween, where the first end of the conformance strut is coupled to a first proximal apex of the main body, and the distal end of the conformance strut is coupled to an adjacent, second proximal apex of the main body, and
- where the at least one conformance strut extends proximal to the proximal apices of the main body in the compressed delivery configuration, and further forms a substantially ring shape together with the proximal apices of the main body in the expanded deployed configuration.
Dependencies are inferred from the claim text.