Systems, methods and devices for two-step delivery and implantation of prosthetic heart valve

• US 10,561,495 B2
• Filed: 01/22/2018
• Issued: 02/18/2020
• Est. Priority Date: 01/24/2017
• Status: Active Grant

• Current Assignee: 4C Medical Technologies, Inc.
• Original Assignee: 4C Medical Technologies, Inc.
• Inventors: Chambers, Jeffrey W.
• Primary Examiner(s): Prebilic, Paul B
• Application Number:
  US15/876,664
• Publication Number:
  US 20180206988A1
• Time in Patent Office: 757 Days
• Field of Search: 623 211, 623 217- 219
• CPC Class Codes: A61F 2/2412 with soft flexible valve members, e.g. tissue valves shaped like natural valves check valves with flexible valve members in general F16K15/14
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2427 Devices for manipulating or deploying heart valves during implantation
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2220/0008 Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2250/006 modular

Abstract

A two-step delivery method, system and device is disclosed comprising, in various embodiments, a self-expanding frame. A self-expanding frame is delivered and expanded within a heart chamber followed by delivery of a prosthetic valve comprising prosthetic valves thereon into the expanded self-expanding frame, which is in turn connected to a valve connection region defined on and by the delivered and expanded frame.

Claims

1. A two-step method of delivering a prosthetic mitral valve device comprising a self-expanding prosthetic mitral valve frame and a prosthetic mitral valve comprising prosthetic mitral valve leaflets to an implantation site within a left atrium of a patient'"'"'s heart for supplementing and/or replacing the native mitral valve leaflet functionality, comprising:

accessing the left atrium by transseptal access with a delivery catheter having a proximal end, a distal end and a lumen therethrough;

loading the self-expanding prosthetic mitral valve frame in a collapsed configuration into the lumen of the delivery catheter at the proximal end thereof, wherein the collapsed configuration of the prosthetic mitral valve frame comprises;

a prosthetic mitral valve connection region attached thereto, and

a section with openings therethrough;

delivering the collapsed self-expanding prosthetic mitral valve frame out of the distal end of the delivery catheter and into the left atrium at a location proximate the implantation site;

allowing the delivered self-expanding prosthetic mitral valve frame to expand within the left atrium at the implantation site, wherein at least a portion of the expanded self-expanding prosthetic mitral valve frame engages at least a portion of the upper annular surface within the left atrium and wherein the prosthetic mitral valve connection region is aligned with the annulus between the left atrium and the left ventricle;

loading the prosthetic mitral valve comprising prosthetic mitral valve leaflets into the lumen of the delivery catheter and delivering the prosthetic mitral valve out of the distal end of the delivery catheter and into the expanded self-expanding prosthetic mitral valve frame;

positioning and connecting the prosthetic mitral valve to the prosthetic mitral valve connection region of the expanded prosthetic mitral valve frame;

ensuring that the left ventricle is not touched at any point by the prosthetic mitral valve device or the delivery catheter; and

ensuring that the annular tissue below and downstream of the upper annular surface is not touched at any point by the expanded prosthetic mitral valve frame or the prosthetic mitral valve.

2. The method of claim 1, further comprising providing at least one tether wire attached to the prosthetic mitral valve to assist in the delivery, positioning and connecting of the prosthetic mitral valve to the prosthetic mitral valve connection region, the at least one tether wire operably manipulated by an operator.

3. The method of claim 1, further comprising sizing the self-expanding prosthetic mitral valve frame to achieve a larger width and/or height than the width and/or height of the left atrium when the self-expanding prosthetic mitral valve frame is allowed to achieve an undeformed expansion configuration without resistance.

4. The method of claim 1, wherein the prosthetic mitral valve is collapsible and self-expanding, the method further comprising loading the prosthetic mitral valve in a collapsed configuration into the delivery catheter, wherein the prosthetic mitral valve self-expands when delivered out of the distal end of the delivery catheter and into the expanded self-expanding prosthetic mitral valve frame.

5. The method of claim 1, further comprising increasing or decreasing the spacing of the prosthetic mitral valve leaflets from the native mitral valve leaflets during delivery and connection of the prosthetic mitral valve to the prosthetic mitral valve connection region.

6. The method of claim 1, wherein at least a portion of the delivered prosthetic mitral valve engages at least a portion of the upper annular surface within the left atrium.

7. The method of claim 1, further comprising ensuring that the left ventricle is not touched at any point during the connecting of the prosthetic mitral valve to the prosthetic mitral valve connection region.

8. The method of claim 1, further comprising ensuring that the annular tissue below and downstream of the upper annular surface is not touched at any point by the delivery of the prosthetic mitral valve frame.

9. The method of claim 1, further comprising ensuring that the annular tissue below and downstream of the upper annular surface is not touched at any point by the delivery or connection of the prosthetic mitral valve to the prosthetic mitral valve connection region.

10. The method of claim 1, further comprising ensuring that the native mitral valve leaflets are not touched by the delivery and expansion of the self-expanding prosthetic mitral valve frame.

11. The method of claim 1, further comprising ensuring that the native mitral valve leaflets are not touched by the delivered and expanded prosthetic mitral valve connection region.

12. The method of claim 1, further comprising ensuring that the native mitral valve leaflets are not touched by the delivered and connected prosthetic mitral valve.

13. The method of claim 1, further comprising ensuring that the connected prosthetic mitral valve is located above the upper annular surface of the left atrium.

14. The method of claim 1, wherein the prosthetic mitral valve leaflets are spaced above and away from the native mitral valve leaflets after connecting the prosthetic mitral valve to the prosthetic mitral valve frame.

15. The method of claim 1, further comprising spacing the prosthetic mitral valve connection region of the delivered and expanded prosthetic mitral valve frame above and away from the native mitral valve leaflets.

16. The method of claim 1, further comprising spacing the prosthetic mitral valve connection region of the delivered and expanded prosthetic mitral valve frame above and away from the upper annular surface within the left atrium.

17. The method of claim 1, further comprising locating the prosthetic mitral valve connection region of the delivered and expanded prosthetic mitral valve frame on the upper annular surface within the left atrium.

18. A two-step method of delivering a prosthetic mitral valve device comprising a self-expanding prosthetic mitral valve frame and a prosthetic mitral valve comprising prosthetic mitral valve leaflets to an implantation site within a left atrium of a patient'"'"'s heart for supplementing and/or replacing the native mitral valve leaflet functionality, comprising:

accessing the left atrium by transseptal access with a delivery catheter having a proximal end, a distal end and a lumen therethrough;

loading the self-expanding prosthetic mitral valve frame in a collapsed configuration into the lumen of the delivery catheter at the proximal end thereof, wherein the collapsed configuration of the prosthetic mitral valve frame comprises;

a prosthetic mitral valve connection region attached thereto, and

a section with openings therethrough;

delivering the collapsed self-expanding prosthetic mitral valve frame out of the distal end of the delivery catheter and into the left atrium at a location proximate the implantation site;

allowing the delivered self-expanding prosthetic mitral valve frame to expand within the left atrium at the implantation site, wherein at least a first portion of the expanded self-expanding prosthetic mitral valve frame engages at least a portion of the upper annular surface within the left atrium and at least a second portion of the expanded self-expanding prosthetic mitral valve frame extends into the annulus, and wherein the prosthetic mitral valve connection region is aligned with the annulus between the left atrium and the left ventricle;

loading the prosthetic mitral valve comprising prosthetic mitral valve leaflets into the lumen of the delivery catheter and delivering the prosthetic mitral valve out of the distal end of the delivery catheter and into the expanded self-expanding prosthetic mitral valve frame;

positioning and connecting the prosthetic mitral valve to the prosthetic mitral valve connection region of the expanded prosthetic mitral valve frame; and

further comprising;

ensuring that the left ventricle is not touched at any point by the prosthetic mitral valve device; and

ensuring that the native mitral valve leaflets are not touched at any point by the expanded prosthetic mitral valve frame or the prosthetic mitral valve.