System and method for mitral valve function

• US 10,149,685 B2
• Filed: 02/28/2017
• Issued: 12/11/2018
• Est. Priority Date: 02/28/2017
• Status: Active Grant

• Current Assignee: Abbott Cardiovascular Systems Incorporated (Abbott Laboratories)
• Original Assignee: Abbott Cardiovascular Systems Incorporated (Abbott Laboratories)
• Inventors: Kizuka, Koji J.
• Primary Examiner(s): Miles, Wade
• Application Number:
  US15/445,789
• Publication Number:
  US 20180242976A1
• Time in Patent Office: 651 Days
• CPC Class Codes: A61B 17/083 Clips, e.g. resilient
• CPC Class Codes: A61B 2017/00783 Valvuloplasty
• CPC Class Codes: A61B 2017/081 Tissue approximator A61B2017/1103, A61B17/8866 take precedence
• CPC Class Codes: A61F 2/2463 Implants forming part of the valve leaflets
• CPC Class Codes: A61F 2/2466 Delivery devices therefor
• CPC Class Codes: A61F 2210/0014 using shape memory or superelastic materials, e.g. nitinol

Abstract

A system for repairing a mitral valve: a first cylinder; and, a clip having an axial length and comprising a second cylinder having a wall and an internal bore. The wall defines an opening extending along the axial length, the opening being sized for at least two requirements: (a) the opening is large enough to receive the first cylinder when the first cylinder is positioned parallel with and adjacent to the second cylinder and the first cylinder is moved in a direction, through the opening. The wall of the second cylinder is sized to bend elastically to widen the opening so as to receive the first cylinder; and (b) the opening is small enough to prevent the first cylinder from falling out of the bore.

Claims

1. A system for repairing a mitral valve in a patient'"'"'s heart, comprising:

a first cylinder; and

a clip having an axial length and comprising a second cylinder having a wall and an internal bore, wherein the wall defines an opening extending along the axial length, the opening being sized for at least two requirements;

(a) the opening is large enough to receive the first cylinder when the first cylinder is positioned parallel with and adjacent to the second cylinder and the first cylinder is moved in a direction, radially with respect to the second cylinder, through the opening into the bore at the same time that a portion of a leaflet in the mitral valve is positioned in the bore between the first cylinder and the second cylinder, wherein, the wall of the second cylinder is sized to bend elastically to widen the opening so as to receive the first cylinder; and

(b) the opening is small enough to prevent the first cylinder from falling out of the bore, once the first cylinder has been received into the bore of the second cylinder;

wherein the clip includes two elongate flanges, each flange extending from the second cylinder; and

wherein each of the two flanges is configured to be wrapped around the second cylinder when in a delivery condition, and extending perpendicular to the axial length in a deployment condition.

2. The system of claim 1, wherein each of the two flanges are formed from a shape memory alloy.

3. The system of claim 1, wherein each of the two flanges define a surface that is planar.

4. The system of claim 1, wherein the clip is made of polymer.

5. The system of claim 1, wherein the clip is made of shape memory alloy.

6. A method of repairing a mitral valve in a patient'"'"'s heart utilizing a system as defined in claim 1, comprising:

positioning, above a leaflet of the mitral valve, the first cylinder;

positioning, below the leaflet, the clip having an axial length and comprising a second cylinder having a wall and an internal bore, wherein the wall defines an opening extending along the axial length; and

pressing the first cylinder radially toward the second cylinder and through the opening into the bore, and simultaneously forcing a portion of the leaflet into the bore between the first cylinder and the second cylinder.

7. The method of claim 6, wherein pressing the first cylinder through the opening into the bore includes elastically bending the second cylinder to temporarily widen the opening.

8. The method of claim 6, wherein positioning a first cylinder and positioning a clip are performed using a transeptal procedure.

9. The method of claim 6, further including positioning the two elongate flanges to extend along a free edge of the leaflet.