Stent-graft with positioning anchor
First Claim
1. A catheter system for intraluminal delivery of an aneurysm treatment system, the catheter system comprising:
- a catheter having a proximal end and a distal end, the catheter having a delivery portion near the distal end, a balloon inflation fluid pathway extending from a proximal portion of the catheter to an expandable balloon on the delivery portion of the catheter, and a fixation medium delivery pathway extending from the proximal portion to the delivery portion; and
an implantable double-walled filling structure disposed on the balloon and adapted for intraluminal placement at an intersection of a main vessel and at least two side branch vessel, the filling structure comprising an inner wall, an outer wall outside of an exterior of the inner wall, and a fillable void between the inner and outer wall,wherein, when deployed by filling the void with a fixation media delivered through the fixation medium delivery pathway, the inner wall surrounds and defines a primary fluid conduit having an upper and lower opening to facilitate blood flow across the intersection and further surrounds and defines at least two lateral fluid conduits extending laterally from and transverse to an axis of the primary fluid conduit, the at least two fluid conduits being in fluid communication with the primary fluid conduit between the upper and lower openings to facilitate blood flow from the primary fluid conduit through the at least two lateral fluid conduits into the at least two side branch vessels, and the outer wall conforms to an inside wall of the main vessel along the primary fluid conduit and to an inside wall of the at least two lateral fluid conduits along at least two arms of the filling structure extending into the at least two sidebranch vessels, each arm surrounding and defining a respective lateral fluid conduit, so as to substantially fill a space between an outside surface of the outer wall and the wall of each of the main vessel and the at least two side branch vessel at the intersection of the main and the at least two side branch vessels, wherein the fillable void between the inner and outer wall surrounds the primary fluid conduit and extends into each of the at least two arms in which the at least two lateral fluid conduits are defined and surrounds each lateral fluid conduit such that filling the fillable void expands the outer wall to contact the inside wall of each of the main vessel and the at least two sidebranch vessels when implanted within the main vessel and at least two side branch vessel.
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Accused Products
Abstract
A positioning anchor is provided for a stent-graft for implantation to treat a damaged body lumen. The positioning anchor is generally tubular surrounding a primary fluid conduit. Arms extend laterally from the generally tubular structure of the anchor surrounding lateral fluid conduits. The form of these arms is preferably custom configured to match a particular patient'"'"'s luminal geometry. The anchor thus fits within the luminal geometry to remain in a desired fixed position for implantation of the anchor and any stent-graft coupled to the anchor. The anchor is most preferably formed with two walls having a void therebetween which can be filled with fixation media to further secure the anchor at the desired implantation site. A lumen shaper balloon and delivery catheter are also disclosed for proper delivery, expansion and inflation of the positioning anchor and stent-graft elements according to this invention.
376 Citations
15 Claims
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1. A catheter system for intraluminal delivery of an aneurysm treatment system, the catheter system comprising:
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a catheter having a proximal end and a distal end, the catheter having a delivery portion near the distal end, a balloon inflation fluid pathway extending from a proximal portion of the catheter to an expandable balloon on the delivery portion of the catheter, and a fixation medium delivery pathway extending from the proximal portion to the delivery portion; and an implantable double-walled filling structure disposed on the balloon and adapted for intraluminal placement at an intersection of a main vessel and at least two side branch vessel, the filling structure comprising an inner wall, an outer wall outside of an exterior of the inner wall, and a fillable void between the inner and outer wall, wherein, when deployed by filling the void with a fixation media delivered through the fixation medium delivery pathway, the inner wall surrounds and defines a primary fluid conduit having an upper and lower opening to facilitate blood flow across the intersection and further surrounds and defines at least two lateral fluid conduits extending laterally from and transverse to an axis of the primary fluid conduit, the at least two fluid conduits being in fluid communication with the primary fluid conduit between the upper and lower openings to facilitate blood flow from the primary fluid conduit through the at least two lateral fluid conduits into the at least two side branch vessels, and the outer wall conforms to an inside wall of the main vessel along the primary fluid conduit and to an inside wall of the at least two lateral fluid conduits along at least two arms of the filling structure extending into the at least two sidebranch vessels, each arm surrounding and defining a respective lateral fluid conduit, so as to substantially fill a space between an outside surface of the outer wall and the wall of each of the main vessel and the at least two side branch vessel at the intersection of the main and the at least two side branch vessels, wherein the fillable void between the inner and outer wall surrounds the primary fluid conduit and extends into each of the at least two arms in which the at least two lateral fluid conduits are defined and surrounds each lateral fluid conduit such that filling the fillable void expands the outer wall to contact the inside wall of each of the main vessel and the at least two sidebranch vessels when implanted within the main vessel and at least two side branch vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification