IP Library › Granted Patent US 12,208,007
Granted Patent B2
US 12,208,007 · App. 17/150,733 · Granted Jan 28, 2025

Helical cardiac anchors for minimally invasive heart valve repair

Inventors: Daryl Edmiston (Draper, UT); Tyler Nordmann (Maple Grove, MN); Graham Garvin (Redwood City, CA); Dan Johnson (Minneapolis, MN); Max Bock-Aronson (Minneapolis, MN); Andy Freeman (St. Louis Park, MN); Ryan Um (St. Louis Park, MN); Randall Beyreis (Corcoran, MN); Brady Hatcher (Rogers, MN)
Assignee: NeoChord, Inc.
A61F2/2457A61B2017/0443A61B2017/0454A61F2220/0016A61F2230/0091
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Quick Facts
Patent No.
US 12,208,007
App. No.
17/150,733
Granted
Jan 28, 2025
Kind
B2
Abstract

An anchor assembly is configured to implant a cardiac anchor into a heart wall of a patient to anchor a suture configured to extend from a valve leaflet of the heart as an artificial chordae. The anchor assembly can include an anchor hub defining an open interior and a helical coil extending distally from the anchor hub and having a sharpened tip configured to embed the helical coil into the heart wall upon rotation of the helical coil. A spring can be disposed within the open interior of the anchor hub. Compressing the spring distally can create an open space within the open interior of the anchor hub for a suture extending through the anchor hub to slide freely and releasing compression on the spring can cause the spring to expand in a proximal direction to clamp the suture within the open interior of the anchor hub.

Claims (27)

1. An anchor assembly configured to be implanted into a heart wall of a heart of a patient to anchor a suture that is configured to extend from a valve leaflet of the heart as an artificial chordae, the anchor assembly comprising:

an anchor hub defining an open interior and a proximal end covering the open interior;

a helical coil extending distally from the anchor hub and having a sharpened tip configured to embed the helical coil into the heart wall upon rotation of the helical coil;

a spring disposed within the open interior of the anchor hub selectively configured to be in one of a compressed state or a released state; and

a suture clamp plate disposed and movable within the open interior of the anchor hub;

wherein when the spring is in the compressed state the spring distally creates an open space within the open interior of the anchor hub for the suture to be extended through the anchor hub so as to slide freely within the open interior of the anchor hub, and wherein when the spring is in the released state the spring expands in a proximal direction to clamp the suture across a tortuous path between the suture clamp plate and the anchor hub within the open interior of the anchor hub, and

wherein the suture clamp plate is configured to rotate within the open interior about a longitudinal axis of the anchor hub relative to the anchor hub as the suture clamp plate moves within the anchor hub.

2. The anchor assembly of claim 1 , wherein the anchor hub includes a slot extending around an exterior of the anchor hub and the suture clamp plate includes a pair of projections configured to interface with the slot to cause the suture clamp plate to rotate as the suture clamp plate moves along the slot.

3. The anchor assembly of claim 1 , wherein the anchor hub includes a suture window and the suture clamp plate includes a suture window configured to enable the suture to pass therethrough, and wherein when the spring is in the compressed state the suture window of the anchor hub and the suture window of the suture clamp plate are generally aligned with each other and when the spring is in the released state the suture window of the anchor hub is generally offset from the suture window of the suture clamp plate.

4. The anchor assembly of claim 1 , further comprising a tether crimp threadedly received through an opening in the anchor hub.

5. The anchor assembly of claim 4 , wherein the spring is configured to move from the compressed state to the released state via rotation of the tether crimp.

6. The anchor assembly of claim 4 , wherein the suture clamp plate is disposed between the spring and the tether crimp.

7. The anchor assembly of claim 6 , wherein in the compressed state, the spring is compressed by the suture clamp plate and the spring is released to the released state by rotation of the tether crimp to move the suture clamp plate to release the spring.

8. An anchor assembly configured to be implanted into a heart wall of a heart of a patient to anchor a suture that is configured to extend from a valve leaflet of the heart as an artificial chordae, the anchor assembly comprising:

an anchor hub defining an open interior and a proximal end covering the open interior;

a helical coil extending distally from the anchor hub and having a sharpened tip configured to embed the helical coil into the heart wall upon rotation of the helical coil;

a suture clamp plate disposed within the open interior of the anchor hub and movable within the anchor hub;

wherein when the suture clamp plate is in a distal state an open space is created within the open interior of the anchor hub for the suture to be extended through the anchor hub so as to slide freely within the open interior of the anchor hub, and wherein when the suture clamp plate is moved to a proximal state the suture clamp plate rotates about a longitudinal axis of the anchor hub to clamp the suture across a tortuous path against the anchor hub.

9. The anchor assembly of claim 8 , wherein the anchor hub includes a slot extending around an exterior of the anchor hub and the suture clamp plate includes a pair of projections configured to interface with the slot to cause the suture clamp plate to rotate as the suture clamp plate moves along the slot.

10. The anchor assembly of claim 8 , wherein the anchor hub includes a suture window and the suture clamp plate includes a suture window configured to enable the suture to pass therethrough, and wherein when the suture clamp plate is in the distal state the suture window of the anchor hub and the suture window of the suture clamp plate are generally aligned with each other and when the suture clamp plate is in the proximal state the suture window of the anchor hub is generally offset from the suture window of the suture clamp plate.

11. The anchor assembly of claim 8 , further comprising a tether crimp threadedly received through an opening in the anchor hub and interfacing with the suture clamp plate.

12. The anchor assembly of claim 11 , wherein the suture clamp plate is configured to move from the distal state to the proximal state via rotation of the tether crimp.

13. The anchor assembly of claim 12 , further comprising a spring disposed on an opposite side of the suture clamp plate from the tether crimp and wherein rotation of the tether crimp when the suture clamp plate is in the distal state releases pressure on the spring to cause the spring to hold the suture clamp plate in the proximal state.

14. The anchor assembly of claim 12 , wherein the tether crimp is configured to be rotated from outside of a body of the patient with a tether extending from the tether crimp, through a vasculature of the patient, and out of the patient.

15. The anchor assembly of claim 8 , further comprising a spring disposed within the open interior of the anchor hub selectively configured to be in one of a compressed state or a released state.

16. The anchor assembly of claim 15 , wherein when the suture clamp plate is in the distal state the suture clamp plate applies a force that compresses the spring into the compressed state.

17. The anchor assembly of claim 16 , wherein when the force is removed from the suture clamp plate, the spring expands to the released state to hold the suture clamp plate in the proximal state.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 18, 2024
From: EDMISTON, DARYL; NORDMANN, TYLER; GARVIN, GRAHAM; JOHNSON, DAN; BOCK-ARONSON, MAX; FREEMAN, ANDY; UM, RYAN; HATCHER, BRADY; BEYREIS, RANDALL
To: NEOCHORD, INC.
Reel/Frame 066808/0809 →
Continuity (3)
Provisional Application 62987140 · Mar 9, 2020
Provisional Application 62962054 · Jan 16, 2020
Related Publication 20210220138A1 · Jul 22, 2021
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