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US 11,376,119 B2Granted
Vascular implant and delivery system
AssigneeEdwards Lifesciences CardiAQ LLC
InventorsArshad Quadri, J. Brent Ratz
Life of this patent
Estimating the term…
Abstract
A vascular implant for replacing a native heart valve comprises a self expanding stent supporting a valve body having leaflets. The stent preferably comprises an anchoring structure configured to prevent the implant from passing through the valve annulus. For delivery, the implant is compacted within delivery device and secured at one end. During delivery the implant is partially released from the delivery device, and positioning of the implant can be verified prior to full release. The implant can be at least partially resheathed and repositioned if desired.
Claims20
A system for replacing a native valve, the system comprising:
- a replacement valve comprising:
- an expandable frame having a proximal and a distal end and configured to transition between a compacted configuration and an expanded configuration;
- a plurality of distal anchors each extending from the expandable frame at an attachment point, wherein when the expandable frame is in the expanded configuration:
- at least a portion of each distal anchor extends proximally towards a proximal end of the expandable frame;
- and
- a proximalmost portion of each distal anchor is positioned radially outward from the expandable frame;
- an anchoring component positioned proximal of the attachment point, the anchoring component comprising an enlarged portion of the expandable frame, the enlarged portion having a diameter greater than diameters of the proximal and distal ends of the expandable frame when the expandable frame is in the expanded configuration;
- and
- a locking component extending from the expandable frame;
- and
- a delivery device comprising:
- an elongate inner tube having a locking structure configured to receive and engage the locking component;
- a cover configured to surround the locking structure and the locking component when the locking component is engaged with the locking structure.
10 more elements
A system for replacing a native valve, the system comprising:
- a replacement valve comprising:
- an expandable frame having a proximal and a distal end and configured to transition between a compacted configuration and an expanded configuration;
- a plurality of distal anchors each extending from the expandable frame at an attachment point, wherein when the expandable frame is in the expanded configuration:
- at least a portion of each distal anchor extends proximally towards a proximal end of the expandable frame;
- and
- a proximalmost portion of each distal anchor is positioned radially outward from the expandable frame;
- and
- an anchoring component positioned proximal of the attachment point, the anchoring component comprising an enlarged portion of the expandable frame, the enlarged portion having a diameter greater than diameters of the proximal and distal ends of the expandable frame when the expandable frame is in the expanded configuration;
- and
- a locking component extending from the expandable frame;
- a delivery device comprising:
- a capture slot configured to engage the locking component;
- a guide slot distal to the capture slot, the guide slot configured to engage the locking component;
- a cover configured to surround the capture slot, the guide slot, and the locking component when the locking component is engaged with the capture slot and the guide slot.
11 more elements
A system for replacing a native valve with a replacement valve, the system comprising:
- a self-expandable tubular stent having a plurality of anchors extending from a distal end portion, an enlarged shoulder portion located along an intermediate portion, and a plurality of locking struts extending from a proximal end portion;
- a valve body supported within the tubular stent;
- and
- a delivery device comprising an inner tube having guide slots sized to receive the plurality of locking struts and an outer sheath adapted for maintaining the plurality of locking struts in the guide slots during delivery, the outer sheath being retractable for releasing the plurality of locking struts from the guide slots during implantation at the native valve;
- wherein, after implantation, the plurality of anchors are positioned radially outwardly of the stent on a downstream side of the native valve annulus and the shoulder is positioned on an upstream side of the native valve annulus such that the native valve annulus is captured between the anchors and the shoulder;
- and
- wherein the valve body replaces the function of the native valve.
4 more elements
Dependencies are inferred from the claim text.