Intra-atrial implants to directionally shunt blood

• US 10,045,766 B2
• Filed: 11/17/2011
• Issued: 08/14/2018
• Est. Priority Date: 11/07/2006
• Status: Active Grant

• Current Assignee: Corvia Medical, Inc.
• Original Assignee: Corvia Medical, Inc.
• Inventors: McNamara, Edward, Celermajer, David, Forcucci, Stephen J., Sugimoto, Hiroatsu, Finch, Matthew J.
• Primary Examiner(s): SCHALL, MATTHEW WAYNE
• Application Number:
  US13/298,926
• Publication Number:
  US 20120130301A1
• Time in Patent Office: 2,462 Days
• Field of Search: 623 115, 623 124, 623 126, 623 21
• CPC Class Codes: A61B 17/0057 Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect sutures A61B17/04; closing rectum or urethra near body surface A61F2/0009
• CPC Class Codes: A61B 17/02 for holding wounds open; Tractors specula A61B1/32 ; drainage appliances for wounds A61M27/00
• CPC Class Codes: A61B 17/11 for performing anastomosis; Buttons for anastomosis
• CPC Class Codes: A61B 2017/00252 for by-pass connections, i.e. connections from heart chamber to blood vessel or from blood vessel to blood vessel
• CPC Class Codes: A61B 2017/00575 for closure at remote site, e.g. closing atrial septum defects
• CPC Class Codes: A61B 2017/00592 Elastic or resilient implements
• CPC Class Codes: A61B 2017/00606 Implements H-shaped in cross-section, i.e. with occluders on both sides of the opening
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2017/0237 for heart surgery endoscopic heart surgery A61B2017/00243; endoscopic access devices, i.e. trocars, A61B17/34
• CPC Class Codes: A61B 2017/1107 for blood vessels
• CPC Class Codes: A61B 2017/1132 End-to-end connections
• CPC Class Codes: A61F 2/06 Blood vessels
• CPC Class Codes: A61F 2/24 Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
• 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 2/2442 Annuloplasty rings or inserts for correcting the valve shape; Implants for improving the function of a native heart valve
• CPC Class Codes: A61F 2/2475 Venous valves
• CPC Class Codes: A61M 27/002 Implant devices for drainage of body fluids from one part of the body to another intraocular A61F9/00781; middle ear A61F11/202

Abstract

Several unique intracardiac pressure vents, placement catheters, methods of placement and methods of treating heart failure are presented. The intracardiac pressure vents presented allow sufficient flow from the left atrium to the right atrium to relieve elevated left atrial pressure and resulting patient symptoms but also limit the amount of flow from the right atrium to the left atrium to minimize the potential for thrombus or other embolic material from entering the arterial circulation.

Claims

1. A device for treating a heart condition in a patient, said device for implantation into the atrial septum of said patient'"'"'s heart, said device comprising:

a core segment defining a passage to enable fluid to flow from one side of said atrial septum to another side of said atrial septum when implanted;

a first annular flange disposed distal to the core segment and adapted to engage a first surface of said atrial septum;

a second annular flange disposed proximal to the core segment and adapted to engage a second surface of said atrial septum, the second surface of said atrial septum opposite to the first surface of said atrial septum; and

a flow control element comprising a baffle disposed proximal to the core segment and configured to direct in a selected direction blood flowing through the passage from a left atrial side of the atrial septum to a right atrial side of the atrial septum, the baffle positioned at a fixed angle relative to the core segment and configured to extend into the right atrial side of the atrial septum.

2. The device of claim 1 wherein at least one of the first annular flange and the second annular flange is more flexible than the core segment.

3. The device of claim 1 wherein at least one of the first annular flange and the second annular flange comprises a plurality of flange segments.

4. The device of claim 3 wherein at least one of the plurality of flange segments is longer than another one of the flange segments.

5. The device of claim 3 wherein at least one of said plurality of flange segments comprises a radiopaque marker.

6. The device of claim 1 wherein the device is self-expandable upon deployment.

7. The device of claim 1 wherein the device is balloon-expandable.

8. The device of claim 1 wherein the flanges define a gap to accommodate the septal wall.

9. The device of claim 8 wherein the gap is variable, thereby enabling the accommodation of variable septal thicknesses.