VASCULAR IMPLANT

• US 20140309731A1
• Filed: 06/24/2014
• Published: 10/16/2014
• Est. Priority Date: 04/15/2009
• Status: Active Grant

• Current Assignee: Edwards Lifesciences CardiAQ LLC (Edwards Lifesciences Corporation)
• Original Assignee: Cardiaq Valve Technologies Incorporated (Edwards Lifesciences Corporation)
• Inventors: Quadri, Arshad, Ratz, J. Brent
• Granted Patent: US 9,585,747 B2
• Time in Patent Office: Days
• US Class Current: 623/2.18
• CPC Class Codes: A61F 2/0805 Implements for inserting tendons or ligaments
• CPC Class Codes: A61F 2/2409 Support rings therefor, e.g. for connecting valves to tissue annuloplasty rings A61F2/2442
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/243 Deployment by mechanical expansion
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2/2439 Expansion controlled by filaments
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/9522 Means for mounting a stent or stent-graft onto or into a placement instrument
• CPC Class Codes: A61F 2002/0882 Anchor in or on top of a bone tunnel, i.e. a hole running through the entire bone
• CPC Class Codes: A61F 2002/9534 for repositioning of stents
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2220/0033 made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
• CPC Class Codes: A61F 2220/0075 sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: A61F 2230/0013 Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped
• CPC Class Codes: A61F 2250/001 for adjusting a diameter

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 a 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.

Claims

1. (canceled)

2. A replacement mitral heart valve comprising:

an expandable frame comprising a first portion configured to be positioned in the left atrium of the heart and a second portion configured to be positioned inside of the native mitral valve annulus, wherein the frame comprises a D-shaped cross-section to facilitate engagement with the native mitral valve annulus;

a plurality of anchors extending from the frame, wherein the plurality of anchors are configured to be positioned on a left ventricular side of the native mitral valve annulus and extend generally toward the first portion; and

a valve body attached to the frame.

3. The replacement mitral heart valve of claim 2, wherein the frame further comprises a third portion configured to be positioned in the left ventricle of the heart, wherein the plurality of anchors extend from the third portion of the frame.

4. The replacement mitral heart valve of claim 3, wherein the plurality of anchors extend radially outward from the third portion of the frame and in a direction substantially parallel with a longitudinal axis of the frame.

5. The replacement mitral heart valve of claim 2, wherein the plurality of anchors comprise tips having a smooth radius.

6. The replacement mitral heart valve of claim 2, further comprising eyelets on at least some of the plurality of anchors.

7. The replacement mitral heart valve of claim 2, wherein the first portion comprises an anchoring feature configured to engage a left atrial side of the native mitral valve annulus.

8. The replacement mitral heart valve of claim 7, wherein the anchoring feature is a shoulder.

9. The replacement mitral heart valve of claim 7, wherein the anchoring feature comprises a plurality of free apices extending radially outward from the frame.

10. The replacement mitral heart valve of claim 2, further comprising a liner covering at least part of the frame.

11. The replacement mitral heart valve of claim 10, wherein the liner extends along at least the second portion of the frame.

12. The replacement mitral heart valve of claim 10, wherein the liner covers at least part of the plurality of anchors.

13. The replacement mitral heart valve of claim 2, wherein the frame is made of a self-expanding material.

14. The replacement mitral heart valve of claim 2, wherein the frame comprises a plurality of diamond-shaped cells.

15. The replacement mitral heart valve of claim 2, wherein the valve body comprises three leaflets.

16. The replacement mitral heart valve of claim 2, further comprising locking features provided on the first portion of the frame to engage with mating features of a delivery device.