Devices and methods for multi-alignment of implantable medical devices

Patent metadata

Field	Value
Publication number	US-12064343-B2
Application number	US-202117187261-A
Country	US
Kind code	B2
Filing date	Feb 26, 2021
Priority date	Mar 4, 2020
Publication date	Aug 20, 2024
Grant date	Aug 20, 2024

Abstract

A transcatheter valve prosthesis includes a stent having a crimped configuration for delivery within a vasculature and an expanded configuration for deployment within a native heart valve. The stent includes at least one axial frame member. The transcatheter valve prosthesis includes at least one outflow marker positioned on the at least one axial frame member. The transcatheter heart valve prosthesis may include inflow markers positioned within the inflow portion of the stent. The transcatheter heart valve prosthesis may include two outflow markers disposed on axial frame members and being circumferentially and longitudinally offset from each other. The markers are configured to aid in axial and circumferential aligned of the transcatheter heart valve prosthesis within a native heart valve.

First claim

What is claimed is:

1. A transcatheter valve prosthesis comprising:
a stent having a crimped configuration for delivery within a vasculature and an expanded configuration for deployment within a native heart valve, wherein the stent comprises an inflow portion, an outflow portion, and a plurality of axial frame members connecting the inflow portion to the outflow portion, wherein the plurality of axial frame members comprises a plurality of commissure posts and a plurality of axial struts;
a first outflow marker positioned on a first commissure post of the plurality of commissure posts, wherein only the first commissure post of the plurality of commissure posts includes a marker disposed thereon and the first outflow marker is the only marker on the first commissure post; and
a second outflow marker positioned on a first axial strut of the plurality of axial struts, the first axial strut being adjacent to the first commissure post, wherein only the first axial strut of the plurality of axial struts includes a marker disposed thereon and the second outflow marker is the only marker on the first axial strut,
wherein one of the first outflow marker and the second outflow marker is positioned closer to an outflow end of the stent relative to the other of the first outflow marker and the second outflow marker,
wherein the first outflow marker and the second outflow mater marker are visible relative to the stent in one or more images captured during delivery and deployment of the stent, and
wherein the first outflow marker and the second outflow marker are positioned such that, in an image plane parallel to an annulus of the native heart valve and bisecting a right coronary cusp of the native heart valve, if the first outflow marker and the second outflow marker appear with no radial offset, the transcatheter valve prosthesis is properly rotationally aligned.

2. The transcatheter valve prosthesis of claim 1 , wherein the first outflow marker is configured to be aligned with a native commissure of the native heart valve.

3. The transcatheter valve prosthesis of claim 1 , wherein the first outflow marker and the second outflow marker are offset by sixty degrees circumferentially.

4. A method for rotationally orienting a transcatheter valve prosthesis in a native heart valve comprising:
delivering the transcatheter valve prosthesis in a crimped configuration to a target site at a native heart valve, the transcatheter valve prosthesis including a stent comprising an inflow portion, an outflow portion, a plurality of axial frame members coupling the inflow portion to the outflow portion, the axial frame members comprising a plurality of commissure posts and a plurality of axial struts, a first outflow marker positioned on a first commissure post of the plurality of commissure posts, and a second outflow marker disposed on a first axial strut of the plurality of axial struts, the first axial strut being adjacent to the first commissure post, wherein one of the first outflow marker and the second outflow marker is positioned closer to an outflow end of the stent relative to the other of the first outflow marker and the second outflow marker;
receiving a fluoroscopic image in a selected image plane, wherein the selected image plane is parallel to an annulus of the native heart valve and perpendicular to bisecting a right coronary cusp of the native heart valve;
determining, based on the image in the selected image plane and the first outflow marker, whether the transcatheter heart valve prosthesis is in a desired rotational orientation by determining whether the first outflow marker and the second outflow marker appear radially aligned in the right of the fluoroscopic image; and
if the transcatheter heart valve prosthesis is not in the desired rotational orientation, rotating the transcatheter heart valve prosthesis such that the first outflow marker and the second outflow marker appear radially aligned in the right of the fluoroscopic image.

Assignees

• Medtronic Inc

Inventors

• Peterson Justin R
• Ung Victoria
• Mitchell James E
• Askari Syed J
• Javani Shahnaz
• Farrar Genevieve E
• Kari Stuart E
• Casley Mark
• Korngold Ethan

Classifications

• A61F2/2433

  using balloon catheter · CPC title

• A61F2250/0098

  radio-opaque, e.g. radio-opaque markers · CPC title

• A61B2090/3762

  using computed tomography systems [CT] · CPC title

• A61B2090/376

  using X-rays, e.g. fluoroscopy · CPC title

• A61B90/37

  Surgical systems with images on a monitor during operation · CPC title