Leaflet engagement elements and methods for use thereof

• US 9,861,476 B2
• Filed: 11/07/2011
• Issued: 01/09/2018
• Est. Priority Date: 12/23/2003
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Salahieh, Amr, Brandt, Brian D., Geshlider, Robert A., Morejohn, Dwight P., Saul, Tom
• Primary Examiner(s): Prone, Christopher D
• Assistant Examiner(s): Ganesan, Suba
• Application Number:
  US13/290,369
• Publication Number:
  US 20120053683A1
• Time in Patent Office: 2,255 Days
• Field of Search: 623 124, 623 125, 623 126, 623 21- 219, 623 238- 242
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2433 using balloon catheter
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2/2439 Expansion controlled by filaments
• CPC Class Codes: A61F 2002/9528 for retrieval of stents
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2230/0078 hyperboloidal
• CPC Class Codes: A61F 2250/006 modular

Abstract

The present invention relates to apparatus for methods for endovascularly replacing a patient'"'"'s heart valve. The apparatus includes an expandable anchor with leaflet engagement elements on the proximal end of the anchor and a replacement valve. The leaflet engagement elements can be used to prevent distal migration and insure proper positioning of the apparatus.

Claims

1. An apparatus for endovascularly replacing a patient'"'"'s heart valve, the apparatus comprising:

a delivery device defining a lumen having a distal opening;

a replacement heart valve comprising an expandable anchor and a replacement valve enveloped within the lumen in a collapsed delivery configuration; and

an anchor actuation element reversibly coupled to a proximal end of the anchor and adapted to apply a distally-directed force on the proximal end of the anchor;

wherein the anchor and the replacement valve are adapted to permit blood flow through the replacement valve and to prevent blood backflow through the replacement valve after a distal terminal end of the expandable anchor is disposed distal of at least the distal opening of the lumen, and before a proximal end of the expandable anchor is disposed distal of the distal opening of the lumen.

2. An apparatus for endovascularly replacing a patient'"'"'s heart valve, the apparatus comprising:

a delivery device defining a lumen;

a replacement heart valve comprising an expandable anchor and a replacement valve enveloped within the lumen in a collapsed delivery configuration; and

an anchor actuation element reversibly coupled to a proximal end of the anchor and adapted to apply a distally-directed force on the proximal end of the anchor;

wherein the anchor and the replacement valve are adapted to permit blood flow through the replacement valve and to prevent blood backflow through the replacement valve before a proximal end of the anchor exits the lumen.