Resheathable stent delivery system
First Claim
Patent Images
1. A stent delivery system comprising:
- a deployable stent expandable from a compressed configuration to an expanded configuration, the stent having a proximal end portion and a distal end portion;
an outer anchoring element having a proximal portion and a distal portion, the outer anchoring element frictionally engaging a radially outer surface of only the proximal end portion of the stent when the outer anchoring element is expanded radially outwardly;
an inner anchoring element and an elongate tube within the stent, the inner anchoring element comprising a tube structure having a distal end, wherein the inner anchoring element is at least partially slit in half along an axial length of the inner anchoring element, the distal end being movable from a location within the elongate tube to a location distal to the elongate tube and configured to (i) expand radially outwardly and (ii) frictionally engage an inner surface of the stent in the expanded configuration when removed from within the elongate tube; and
a delivery member configured to encapsulate at least partially the stent and the outer anchoring element prior to expanding the stent, wherein the outer anchoring element is configured to expand radially outwardly when moved distally from within the delivery member.
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Abstract
The present disclosure relates generally to medical implant devices for use within a patient'"'"'s body and, more particularly, relates to systems and methods for resheathing vascular devices. In some embodiments, a stent delivery system includes a stent expandable from a compressed configuration to an expanded configuration. The stent has a proximal end and a distal end and an anchoring element having a proximal portion and a distal portion, wherein the anchoring element engages the stent in the expanded configuration.
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Citations
17 Claims
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1. A stent delivery system comprising:
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a deployable stent expandable from a compressed configuration to an expanded configuration, the stent having a proximal end portion and a distal end portion; an outer anchoring element having a proximal portion and a distal portion, the outer anchoring element frictionally engaging a radially outer surface of only the proximal end portion of the stent when the outer anchoring element is expanded radially outwardly; an inner anchoring element and an elongate tube within the stent, the inner anchoring element comprising a tube structure having a distal end, wherein the inner anchoring element is at least partially slit in half along an axial length of the inner anchoring element, the distal end being movable from a location within the elongate tube to a location distal to the elongate tube and configured to (i) expand radially outwardly and (ii) frictionally engage an inner surface of the stent in the expanded configuration when removed from within the elongate tube; and a delivery member configured to encapsulate at least partially the stent and the outer anchoring element prior to expanding the stent, wherein the outer anchoring element is configured to expand radially outwardly when moved distally from within the delivery member. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A stent delivery system comprising:
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a stent expandable from a compressed configuration to an expanded configuration and having a proximal end portion, a distal end portion, and an inner lumen; an outer anchoring element engaging a radially outer surface of only the proximal end portion of the stent when the stent is partially expanded and when the outer anchoring element is expanded radially outwardly, the outer anchoring element having a proximal portion and a distal portion; an inner anchoring element comprising a tube structure, wherein the inner anchoring element is at least partially slit in half along an axial length of the inner anchoring element; and an elongate tube disposed radially within the stent, the elongate tube configured to at least partially encapsulate the inner anchoring element; and a catheter at least partially housing the outer anchoring element and the stent; wherein the inner anchoring element has a distal end movable from a location within the elongate tube to a location distal to the elongate tube, the distal end being (i) expandable from a compressed configuration to an expanded configuration when removed from within the elongate tube and (ii) configured to engage an inner surface of the stent, wherein the outer anchoring element is movable from a location within the catheter to a location distal to the catheter and is configured to flare radially outwardly when moved distally from within the catheter. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A stent delivery system comprising:
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a deployable stent expandable from a compressed configuration to an expanded configuration, the stent having a proximal end portion and a distal end portion; an outer anchoring element having a proximal portion and a distal portion, the outer anchoring element frictionally engaging a radially outer surface of only the proximal and portion of the stent when the outer anchoring element is expanded radially outwardly; an inner anchoring element and an elongate tube within the stent, the inner anchoring element having a distal end, the distal end being movable from a location within the elongate tube to a location distal to the elongate tube and configured to (i) expand radially outwardly and (ii) frictionally engage an inner surface of the stent in the expanded configuration when removed from within the elongate tube; and a delivery member configured to encapsulate at least partially the stent and the outer anchoring element prior to expanding the stent, wherein the outer anchoring element is configured to expand radially outwardly when moved distally from within the delivery member, the inner anchoring element comprising a tube structure, wherein the inner anchoring element is at least partially slit in half along an axial length of the inner anchoring element.
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17. A stent delivery system comprising:
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A stent expandable from a compressed configuration to an expanded configuration and having a proximal end portion, a distal end portion, and an inner lumen; an outer anchoring element engaging a radially outer surface of only the proximal end portion of the stent when the stent is partially expanded and when the outer anchoring element is expanded radially outwardly, the outer anchoring element having a proximal portion and a distal portion; an inner anchoring element comprising a tube structure, wherein the inner anchoring element is at least partially slit in halve along an axial length of the inner anchoring element; and an elongate tube disposed radially within the stent, the elongate tube configured to at least partially encapsulate the inner anchoring element; and a catheter at least partially housing the outer anchoring element and the stent; wherein the inner anchoring element has a distal end movable from a location within the elongate tube to a location distal to the elongate tube, the distal end being (i) expandable from a compressed configuration to an expanded configuration when removed from within the elongate tube and (ii) configured to engage an inner surface of the stent, wherein the outer anchoring element is movable from a location within the catheter to a location distal to the catheter and is configured to flare radially outwardly when moved distally from within the catheter.
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Specification