Devices, systems, and methods to treat heart failure having an improved flow-control mechanism

• US 10,188,375 B2
• Filed: 07/30/2010
• Issued: 01/29/2019
• 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:
  US12/848,084
• Publication Number:
  US 20100298755A1
• Time in Patent Office: 3,105 Days
• Field of Search: 623 126, 623 236, 623 237
• 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
• CPC Class Codes: A61B 2017/0237 for heart surgery
• 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 intra-cardiac pressure vents, placement catheters, methods of placement and methods of treating heart failure are presented. The intra-cardiac pressure vents presented remain partially open under normal intra-cardiac pressures to allow sufficient flow from the left atrium to the right atrium to enable the relief of elevated left atrial pressure and resulting patient symptoms, and also limit the amount of flow from the right atrium to the left atrium by closing when the pressure in the right atrium exceeds the pressure in the left atrium by a predetermined amount.

Claims

1. A device for treating a heart condition in a patient, said device being configured to be implanted into the atrial septum of the patient'"'"'s heart, the patient'"'"'s heart comprising a left atrium and a right atrium, the device comprising:

a cylindrical core segment defining a passage;

a first annular flange adapted to engage a first surface of the atrial septum;

a second annular flange adapted to engage a second surface of the atrial septum, the

second surface opposite to the first surface, and

a flow control element adapted to be partially open when the pressure in the left atrium is equal to the pressure in the right atrium and to close when the pressure in the right atrium is greater than the pressure in the left atrium by at least 2 mm Hg,

wherein the flow control element extends over a radially inner portion of the second annular flange, such that it overlaps with the radially inner portion of the second annular flange.

2. The device of claim 1 wherein the flow control element comprises a valve.

3. The device of claim 1 wherein the first surface of the atrial septum is in the right atrium.

4. The device of claim 1 wherein the second surface of the atrial septum is in the left atrium.

5. The device of claim 2 wherein the valve is further adapted to be flappable during the cycle of the heart.

6. The device of claim 2 wherein the valve is further adapted to resonate with the cycle of the heart.