IP Library › Granted Patent US 12,350,155
Granted Patent B2
US 12,350,155 · App. 18/001,981 · Granted Jul 8, 2025

Method and apparatus for mitral valve chord repair

Inventors: Cameron Paul Purcell (Santa Rosa, CA); Gordon B. Bishop (Santa Rosa, CA); Trung Ho Pham (Santa Rosa, CA); Stephen R. McDaniel (San Rafael, CA); Hien Ngoc Lam (Santa Rosa, CA); Whittaker Ian Hamill (Santa Rosa, CA); Katie Nicole Riojas (Santa Rosa, CA)
Assignee: Pipeline Medical Technologies, Inc.
A61F2/2457A61B17/0401A61B17/0467A61F2/2466A61B2017/0409A61B2017/0441A61F2220/0016A61F2220/0075A61F2230/0091A61F2250/0098
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Quick Facts
Patent No.
US 12,350,155
App. No.
18/001,981
Granted
Jul 8, 2025
Kind
B2
Abstract

Methods and devices for transvascular prosthetic chordae tendinea implantation are disclosed. A catheter is advanced into the left atrium. From an atrium side, the catheter can be anchored to a superior surface of a mitral valve leaflet and a leaflet anchor can be advanced into the mitral valve leaflet to secure the mitral valve leaflet to a leaflet suture. A ventricular anchor is anchored to the wall of the ventricle to secure the ventricular wall to a ventricle suture. The leaflet suture and the ventricle suture may be tensioned and connected by a suture lock to form an artificial chordae.

Claims (24)

1. A tissue anchor, comprising:

a hub;

a suture extending proximally from the hub;

a helical anchor extending distally from the hub; and

a secondary anchor axially moveable relative to the hub in a distal direction from a first configuration to a second, deployed configuration to engage tissue and inhibit unscrewing of the helical anchor.

2. The tissue anchor as in claim 1 , wherein the secondary anchor comprises a tine that is carried by a support and extends between a proximal end and a sharpened distal end.

3. The tissue anchor as in claim 2 , wherein the support comprises an annular structure.

4. The tissue anchor as in claim 2 , wherein the support can receive a tubular structure of a deployment system for advancing the support distally with respect to the helical anchor.

5. The tissue anchor as in claim 2 , wherein the hub includes a tine guide for axially moveably receiving the tine.

6. The tissue anchor as in claim 5 , wherein the tine guide includes a deflection surface for deflecting the tine into a launch angle that inclines radially outwardly in the distal direction.

7. The tissue anchor as in claim 6 , wherein the launch angle is within a range of 30 to 45 degrees.

8. The tissue anchor as in claim 1 , wherein the hub includes an aperture for axially moveably receiving the secondary anchor.

9. The tissue anchor as in claim 1 , further comprising a core wire attached to the hub and extending concentrically through the helical anchor, and a suture anchor guide extending proximallv from the hub.

10. The tissue anchor as in claim 9 , wherein in the second, deployed configuration the secondary anchor extends through the suture anchor guide.

11. The tissue anchor as in claim 10 , wherein the secondary anchor extends through an aperture in the suture anchor guide.

12. The tissue anchor as in claim 11 , wherein as the secondary anchor moves to the second, deployed configuration, the secondary anchor is operable to pierce the suture anchor guide.

13. The tissue anchor as in claim 12 , wherein the core wire extends distally beyond the helical anchor.

14. The tissue anchor as in claim 1 , further comprising a radiopaque marker carried by the secondary anchor.

15. The tissue anchor as in claim 1 , further comprising a core wire attached to the hub and extending concentrically through the helical anchor, a radiopaque marker axially movably carried by the core wire, and a spring carried by the core wire.

16. The tissue anchor as in claim 15 , further comprising a distal stop on the core wire operable to limit distal travel of the radiopaque marker.

17. The tissue anchor as in claim 1 , further comprising a tissue piercing point on a distal end of the helical anchor, and a barb on the helical anchor, proximal to the point and configured to resist rotation of the helical anchor out of engagement with tissue.

18. The tissue anchor of claim 1 , wherein the secondary anchor is operable to increase an anchor torque resistance of the tissue anchor by a factor between 2 to 5 as compared to an anchor torque resistance of the tissue anchor without the secondary anchor.

19. The tissue anchor of claim 1 , wherein an anchor torque resistance of the helical anchor with the secondary anchor is between 2 N/cm to 5 N/cm.

20. The tissue anchor of claim 1 , wherein the secondary anchor increases an anchor torque resistance of the helical anchor by at least a factor of 2 as compared to an anchor torque resistance of the tissue anchor without the secondary anchor.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 17, 2023
From: PURCELL, CAMERON PAUL; BISHOP, GORDON B.; PHAM, TRUNG HO; MCDANIEL, STEPHEN R.; LAM, HIEN NGOC; HAMILL, WHITTAKER IAN; RIOJAS, KATIE NICOLE
To: PIPELINE MEDICAL TECHNOLOGIES, INC.
Reel/Frame 063023/0173 →
Continuity (2)
Provisional Application 63040389 · Jun 17, 2020
Related Publication 20230225865A1 · Jul 20, 2023
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