PROSTHESIS FOR REDUCING INTRA-CARDIAC PRESSURE HAVING AN EMBOLIC FILTER

• US 20120053686A1
• Filed: 11/07/2011
• Published: 03/01/2012
• Est. Priority Date: 11/07/2006
• Status: Active Grant

• Current Assignee: Corvia Medical, Inc.
• Original Assignee: DC Devices Inc.
• Inventors: McNamara, Edward, Finch, Matthew J., Forcucci, Stephen, Sugimoto, Hiroatsu
• Granted Patent: US 8,460,372 B2
• Time in Patent Office: Days
• US Class Current: 623/2.36
• 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 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 2017/00526 Methods of manufacturing
• 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 2017/00623 Introducing or retrieving devices therefor
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2560/063 Devices specially adapted for delivering implantable medical measuring apparatus
• CPC Class Codes: A61B 6/12 Arrangements for detecting or locating foreign bodies
• CPC Class Codes: A61B 6/4423 related to hygiene or sterilisation
• CPC Class Codes: A61B 6/487 involving fluoroscopy
• CPC Class Codes: A61B 6/503 for diagnosis of the heart
• CPC Class Codes: A61B 8/0841 for locating instruments
• CPC Class Codes: A61B 8/0883 for diagnosis of the heart
• 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

Abstract

The present disclosure relates to devices and methods for implanting a prosthesis into a heart of a mammal, such as a person. The disclosure includes a prosthesis that acts as a pressure vent between the left and right atria of the heart. The intracardiac pressure vents disclosed allow sufficient flow from the left atrium to the right atrium to relieve elevated left atrial pressure and resulting patient symptoms. The devices also limit the amount of flow from the right atrium to the left atrium to minimize the potential for thrombi or other embolic material from entering arterial circulation.

Claims

1. A device for implanting in an opening in a septal wall in a heart of a patient, comprising:

i. a first annular flange adapted to be in the left atrium of said patient'"'"'s heart when deployed, said first annular flange comprising a plurality of flange segments, each of said flange segments of the first annular flange having a proximal end and a distal end;

ii. a second annular flange adapted to be in the right atrium of said patient'"'"'s heart when deployed, said second annular flange comprising a plurality of flange segments, each of said flange segments of the second annular flange having a proximal and a distal end, at least one of said flange segments of said second annular flange comprising a distal end adapted to be substantially parallel with and contact the septal wall when deployed; and

iii. a core segment having a first diameter when deployed, said core segment defining a passage adapted to permit fluid to flow therethrough from one side of said septal wall to another side of said septal wall,

wherein the proximal ends of the first annular flange and the proximal ends of the second annular flange are contiguous with and define the core segment,

wherein a subset of the plurality of flange segments of the second annular flange each comprises a strut attached thereto at attachment points and extending into said right atrium, and

wherein each of said struts converges at an apex.

2. The device according to claim 1, wherein said struts are spaced apart a distance from about 2 mm to about 4 mm at said attachment points.

3. The device according to claim 1, wherein the apex comprises an orifice.

4. The device according to claim 3, wherein said orifice is suitable for receiving a retrieval snare.

5. The device according to claim 1, wherein the struts converging at said apex are attached adjacent said orifice.

6. The device according to claim 1, wherein said struts are integrally formed with said subset of the plurality of flange segments of the second annular flange.

7. The device according to claim 1 wherein the core segment is less flexible than a portion of at least one of said flange segments.

8. The device according to claim 1, further comprising a valve attached to said core segment.

9. The device of claim 1, wherein the core segment, annular flanges, and struts are made of nitinol.

10. The device of claim 1 wherein the struts are oriented concave with respect to the attachment points and apex.