Methods of repositioning a transcatheter heart valve after full deployment

• US 9,901,470 B2
• Filed: 12/04/2013
• Issued: 02/27/2018
• Est. Priority Date: 03/01/2013
• Status: Active Grant

• Current Assignee: St. Jude Medical Cardiology Division Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: St. Jude Medical Cardiology Division Incorporated (Abbott Laboratories Incorporated)
• Inventors: Daly, Jacob John, Chalekian, Aaron J.
• Primary Examiner(s): Tyson, Melanie
• Application Number:
  US14/096,405
• Publication Number:
  US 20140249564A1
• Time in Patent Office: 1,546 Days
• CPC Class Codes: A61B 17/22032 having inflatable gripping elements balloon catheters A61M25/10
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 2017/00358 Snares for grasping
• CPC Class Codes: A61B 2017/22035 for retrieving or repositioning foreign objects
• CPC Class Codes: A61B 2017/22069 Immobilising; Stabilising
• 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 2002/9534 for repositioning of stents

Abstract

A device for repositioning an implant within a lumen of a subject including (a) a catheter having forward and rearward ends and a collapsible and expansible stop element mounted adjacent the forward end of the catheter, the stop element being adapted to engage a wall of the lumen when expanded and to provide one or more passages extending from a rear side of the stop element to a forward side of the stop element when the stop element is expanded and engaged with the wall of the lumen and (b) one or more snares, each snare having engagement features, the stop element and the snares being constructed and arranged so that the snares can be positioned extending through the one or more passages with their engagement features forward of the stop element.

Claims

1. A device for repositioning an implant within a lumen of a subject comprising:

(a) a catheter having forward and rearward ends and a collapsible and expansible stop element mounted adjacent the forward end of the catheter, the stop element being adapted to engage a wall of the lumen when expanded and having a central passage defined by an inner wall of the stop element that extends from a rear side of the stop element to a forward side of the stop element when the stop element is expanded and engaged with the wall of the lumen, the central passage having a circular cross-section and a constant diameter from the forward side to the rear side of the stop element; and

(b) one or more snares, each snare terminating in engagement features at distal ends thereof for mating with the implant, the stop element and the snares being constructed and arranged so that the snares are freely movable within the circular cross-section of the central passage and able to contact the inner wall of the stop element with their engagement features forward of the stop element and so that the snares can be engaged with the implant and retracted rearwardly relative to the stop element while the stop element is engaged with the wall of the lumen;

wherein the one or more snares includes multiple snares, and wherein each of the engagement features is a hook having a free end, the free ends of the hooks being unconnected to one another.

2. A device as claimed in claim 1, wherein the stop element includes an inflatable stop balloon.

3. A device as claimed in claim 2, wherein the inflatable stop balloon further comprises a port in fluid communication with an interior of the stop balloon for receiving a fluid to inflate the stop balloon.

4. A device for repositioning an implant within a lumen of a subject comprising:

(a) a catheter having forward and rearward ends and a collapsible and expansible stop element mounted adjacent the forward end of the catheter, the stop element being adapted to engage a wall of the lumen when expanded and having a central passage defined by an inner wall of the stop element that extends from a rear side of the stop element to a forward side of the stop element when the stop element is expanded and engaged with the wall of the lumen, the central passage having a circular cross-section and a constant diameter from the forward side to the rear side of the stop element; and

(b) one or more snares, each snare terminating in engagement features at distal ends thereof for mating with the implant, the stop element and the snares being constructed and arranged so that the snares are freely movable within the circular cross-section of the central passage and able to contact the inner wall of the stop element with their engagement features forward of the stop element and so that the snares can be engaged with the implant and retracted rearwardly relative to the stop element while the stop element is engaged with the wall of the lumen, wherein the one or more snares includes multiple snares, and wherein the implant is a prosthetic heart valve having a metallic stent, and each of the engagement features is independently moveable and configured to couple to a portion of the stent.