Guide wire apparatuses and methods

Patent metadata

Field	Value
Publication number	US-12544222-B2
Application number	US-202117390762-A
Country	US
Kind code	B2
Filing date	Jul 30, 2021
Priority date	Feb 4, 2019
Publication date	Feb 10, 2026
Grant date	Feb 10, 2026

Abstract

Guide wire apparatuses and methods. Guide wires may be utilized for guiding a delivery apparatus, for example a transcatheter mitral valve delivery apparatus to replace a native mitral valve. A guide wire may include a core body having a length, and an outer layer having a length and extending around the core body and along the length of the core body. A guide wire may include an intermediate layer positioned between the core body and the outer layer and configured to be retracted relative to the core body and the outer layer along the length of the core body and the length of the outer layer.

First claim

What is claimed is:

1 . A method comprising:
passing a guide wire into an atrium of a patient's heart, the guide wire including an elongate wire and a distal tip coupled to the elongate wire; expanding the distal tip of the guide wire from an undeployed configuration to a deployed configuration in which the distal tip expands radially outward from the elongate wire in two radial dimensions of the elongate wire; passing the distal tip of the guide wire in the deployed configuration through an annulus of a native valve of the patient's heart; deflecting the elongate wire by contacting the distal tip of the guide wire in the deployed configuration against adjacent chordae tendineae of a ventricle of the patient's heart, the distal tip in the deployed configuration having a thickness in the two radial dimensions that is greater than a size of an opening between the adjacent chordae tendineae that are contacted such that the distal tip does not pass through the opening; passing a delivery apparatus retaining a device along the guide wire; and deploying the device to the native valve from the delivery apparatus.

2 . The method of claim 1 , further comprising passing the guide wire through an atrial septum of the patient's heart.

3 . The method of claim 1 , wherein the distal tip is configured to automatically move from the undeployed configuration to the deployed configuration.

4 . The method of claim 1 , wherein the distal tip in the deployed configuration forms a body bounding a volume.

5 . The method of claim 1 , wherein the distal tip in the deployed configuration includes one or more arms shaped into a body having a curved outer surface.

6 . The method of claim 1 , wherein the distal tip in the deployed configuration has one or more of a spiral, conical, lobed, spherical, ovoid, circular, or flat shape.

7 . The method of claim 1 , wherein the distal tip in the deployed configuration has a distal portion and a proximal portion, and the distal tip increases in size from the distal portion towards the proximal portion.

8 . The method of claim 1 , wherein the distal tip in the deployed configuration includes a single arm shaped into a body bounding a volume.

9 . The method of claim 8 , wherein the body includes alternating upward and downward oriented lobes.

10 . The method of claim 1 , wherein the delivery apparatus includes a capsule retaining the prosthetic valve and a nose cone positioned distal of the capsule, the nose cone being passed along the elongate wire of the guide wire.

11 . A method comprising:
providing a guide wire including an elongate wire and a distal tip coupled to the elongate wire; expanding, within a portion of a patient's body, the distal tip of the guide wire from an undeployed configuration to a deployed configuration in which the distal tip expands radially outward from the elongate wire in two radial dimensions of the elongate wire; passing the distal tip of the guide wire in the deployed configuration through an annulus of a native valve of the patient's heart; deflecting the elongate wire by contacting the distal tip of the guide wire in the deployed configuration against adjacent chordae tendineae of a ventricle of the patient's heart, the distal tip in the deployed configuration having a thickness in the two radial dimensions that is greater than a size of an opening between the adjacent chordae tendineae that are contacted such that the distal tip does not pass through the opening; passing a delivery apparatus retaining a device along the guide wire; and deploying the device to the native valve from the delivery apparatus.

12 . The method of claim 11 , further comprising passing the distal tip out of a lumen of a catheter within the portion of the patient's body to expand the distal tip from the undeployed configuration to the deployed configuration.

13 . The method of claim 11 , wherein the distal tip is preformed into the deployed configuration.

14 . The method of claim 11 , wherein the distal tip is made of a shape memory material.

15 . The method of claim 11 , wherein the distal tip in the deployed configuration has one or more of a spiral, conical, lobed, spherical, ovoid, circular, or flat shape.

16 . The method of claim 11 , wherein the distal tip in the deployed configuration forms a body bounding a volume.

17 . The method of claim 16 , wherein the body has a thickness in the two radial dimensions that is greater than a thickness of the elongate wire in the two radial dimensions.

18 . The method of claim 11 , wherein the distal tip in the deployed configuration includes a single arm shaped into a body bounding a volume.

19 . The method of claim 18 , wherein the body includes alternating upward and downward oriented lobes.

20 . The method of claim 11 , wherein the delivery apparatus includes a capsule retaining the device and a nose cone positioned distal of the capsule, the nose cone being passed along the elongate wire of the guide wire.

Assignees

• Edwards Lifesciences Corp

Inventors

• Cooper Alexander H
• Ratz Jeremy Brent
• Stewart Kevin M
• Landon David Robert
• Johnson Garrett Dallas
• Srinimukesh Harish Manickam
• Malaeb Deena Jamal

Classifications

• A61F2230/0091

  helically-coiled or spirally-coiled, i.e. having a 2-D spiral cross-section · CPC title

• A61F2230/0071

  spherical · CPC title

• A61F2230/0067

  conical · CPC title

• A61F2230/0006

  circular · CPC title

• A61F2210/0014

  using shape memory or superelastic materials, e.g. nitinol · CPC title