US 12,343,256 B2
Anchor hook for side-delivery transcatheter heart valve prosthesis
Mark Christianson, Plymouth, MN (US); Robert Vidlund, Forest Lake, MN (US); Chad Perrin, Andover, MN (US); and Craig Ekvall, East Bethel, MN (US)
Assigned to VDyne, Inc., Maple Grove, MN (US)
Filed by VDyne, Inc., Maple Grove, MN (US)
Filed on Jul. 9, 2021, as Appl. No. 17/372,022.
Application 17/372,022 is a continuation of application No. PCT/US2020/013240, filed on Jan. 11, 2020.
Claims priority of provisional application 62/847,741, filed on May 14, 2019.
Claims priority of provisional application 62/790,465, filed on Jan. 10, 2019.
Prior Publication US 2021/0330459 A1, Oct. 28, 2021
Int. Cl. A61F 2/24 (2006.01); A61B 17/00 (2006.01); A61B 17/34 (2006.01); A61F 2/91 (2013.01)
CPC A61F 2/2436 (2013.01) [A61B 17/3468 (2013.01); A61F 2/2418 (2013.01); A61B 2017/00243 (2013.01); A61B 2017/00292 (2013.01); A61B 2017/00358 (2013.01); A61F 2/91 (2013.01); A61F 2210/0014 (2013.01); A61F 2220/0016 (2013.01); A61F 2230/0017 (2013.01); A61F 2250/0098 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An anchoring system for a transcatheter prosthetic heart valve, the anchoring system comprising:
an anchor channel of the transcatheter prosthetic heart valve, an interior surface of the anchor channel defining a lumen;
a delivery catheter having an outer diameter and having a lumen extending therethrough, at least a portion of the delivery catheter configured to be advanced though the lumen of the anchor channel, the outer diameter of the delivery catheter being smaller than an internal diameter of the lumen of the anchor channel;
an anchor hook configured to be disposed within a distal end of the lumen of the delivery catheter and having:
an elongated shaft portion having a proximal end that forms a proximal tether loop,
a plurality of anchoring tabs or barbs disposed along the elongated shaft portion and biased to an expanded configuration in which the tabs or barbs extend away from a central axis of the elongated shaft portion to a radius from the central axis larger than the inner diameter of the anchor channel, and movable to a closed or compressed configuration in which the tabs or barbs are folded towards the central axis of the elongated shaft portion to a radius from the central axis smaller than the inner diameter of the anchor channel, and
a hook portion at a distal end of the elongated shaft portion, the hook portion configured to be disposed within the lumen of the delivery catheter in a compressed configuration in which the hook portion is folded towards the central axis of the elongated shaft portion and biased towards an expanded configuration in which the hook portion extends away from the central axis of the elongated shaft portion; and an elongated pusher releasably engageable with the proximal end of the elongated shaft portion and configured to extend proximally through the delivery catheter,
a tether coupled to a tether mount of the hook portion and extending proximally through the proximal tether loop and the lumen of the delivery catheter,
the anchoring system being operable to have (i) the distal end of the delivery catheter disposed within the lumen of the anchor channel, (ii) the anchor hook pushed in a distal direction out of the delivery catheter and through the anchor channel, via the elongated pusher, to a position in which the hook portion extends out of the anchor channel and transitions to its expanded configuration, and (iii) the anchoring tabs or barbs engage the interior surface of the anchor channel to limit movement of the anchor hook in the distal direction,
the anchoring system being further operable to retrieve the anchor hook by application of a proximal force on the tether to urge the hook portion from its expanded configuration to its compressed configuration and to withdraw the anchor hook in a proximal direction into the anchor channel.