Heart valve repair

Patent metadata

Field	Value
Publication number	US-11559397-B2
Application number	US-201916710898-A
Country	US
Kind code	B2
Filing date	Dec 11, 2019
Priority date	Dec 13, 2018
Publication date	Jan 24, 2023
Grant date	Jan 24, 2023

Abstract

In some examples, a delivery device includes a handle that includes a control member, an elongate body, a plurality of arms extending from a distal portion of the elongate body to a distal collar configured to releasably couple to an annuloplasty device. The plurality of arms is operatively coupled to the control member and configured to position the annuloplasty device at a target site in a patient. The delivery device further comprises a plurality of anchors configured to secure the annuloplasty device to tissue at the target site, each respective anchor of the plurality of anchors deployable from a respective arm of the plurality of arms.

First claim

What is claimed is:

1. A system comprising:
an annuloplasty device; and
a delivery device comprising:
a handle comprising a control member;
an elongate body;
a plurality of arms extending from a distal portion of the elongate body to a distal collar releasably coupled to the annuloplasty device, wherein the plurality of arms is operatively coupled to the control member and configured to position the annuloplasty device at a target site in a patient;
a plurality of anchors configured to secure the annuloplasty device to tissue at the target site, each respective anchor of the plurality of anchors deployable from a respective arm of the plurality of arms,
wherein the plurality of arms are relatively rigid and are configured such that the control member moves the plurality of arms to reduce a diameter of the annuloplasty device with the plurality of anchors secured to the tissue at the target site.

2. The system of claim 1 , further comprising:
a retainer wire extending through at least a portion of the annuloplasty device; and
a lock on the retainer wire, wherein the retainer wire and the lock are configured to maintain the reduced diameter of the annuloplasty device.

3. The system of claim 1 , wherein a proximal end of the plurality of arms is coupled to a proximal collar that is in sliding engagement with the elongate body, wherein a longitudinal position of the proximal collar is configured to be controlled by a control wire extending from the control member to the proximal collar.

4. The system of claim 1 , wherein each respective arm of the plurality of arms defines a lumen through which a corresponding control wire extends, wherein the corresponding control wire extends from the control member to a distal portion of the respective arm, wherein the lumen is configured to house a corresponding anchor in an undeployed configuration, wherein the corresponding control wire is configured to deploy the corresponding anchor from the lumen in a distal direction.

5. The system of claim 1 , wherein each anchor of the plurality of anchors comprises a shape-memory alloy.

6. The system of claim 1 , wherein each respective anchor of the plurality of anchors is configured to assume a helical shape or a hook shape when deployed from a respective arm of the plurality of arms.

7. The system of claim 1 , wherein each arm of the plurality of arms comprises a hinge proximal to the distal collar, wherein the hinge is configured to rotate in at least one direction.

8. The system of claim 7 , wherein each respective anchor of the plurality of anchors extends through the hinge when in an undeployed configuration such that respective anchor prevents the hinge from rotating, wherein, upon deployment of the respective anchor, the hinge is configured to rotate in the at least one direction.

9. The system of claim 7 , wherein the hinge comprises at least one of a rivet hinge or a ball and socket hinge.

10. The system of claim 7 , wherein each respective arm of the plurality of arms comprises a spring recoil member configured to retract inward and disengage from a respective hinge in response to at least one of deployment of a respective anchor in a distal direction or withdrawal of a push member in a proximal direction.

11. The system of claim 1 , wherein the tissue comprises a leaflet of a heart valve.

12. A medical system comprising:
an annuloplasty device; and
a delivery device configured to deliver the annuloplasty device to a target site in a patient, the delivery device comprising:
a handle comprising a control member;
an elongate body extending along a longitudinal axis from a proximal end coupled to the handle to a distal portion;
a plurality of flexible arms extending from the distal portion of the elongate body to a distal collar configured to releasably couple to the annuloplasty device, wherein the plurality of flexible arms is operatively coupled to the control member and configured to position the annuloplasty device at the target site; and
a plurality of anchors configured to secure the annuloplasty device to tissue at the target site, each respective anchor of the plurality of anchors deployable from a respective arm of the plurality of arms;

wherein the plurality of flexible arms is configured to reduce a diameter of the annuloplasty device by maintaining the plurality of flexible arms taut while advancing the distal portion of the elongate member.

13. The system of claim 12 , wherein the control member comprises a plurality of control members, each respective control member of the plurality of control members coupled to a respective arm of the plurality of flexible arms and configured to control a length of the respective arm extending from the distal portion of the elongate body.

14. The system of claim 12 , wherein the distal collar comprises a rivet hinge.

15. The system of claim 12 , further comprising a self-expanding structure coupled to at least some of the arms of the plurality of flexible arms, wherein the self-expanding structure is configured to radially expand the plurality of flexible arms.

16. A method comprising:
using a delivery device to position an annuloplasty device in a radially expanded configuration at a target site in a patient, wherein the delivery device comprises:
a handle comprising a control member;
an elongate body;
a plurality of arms extending from a distal portion of the elongate body to a distal collar configured to releasably couple to the annuloplasty device, wherein the plurality of arms is operatively coupled to the control member and configured to position the annuloplasty device at the target site in a patient; and
a plurality of anchors configured to secure the annuloplasty device to tissue at the target site, each respective anchor of the plurality of anchors deployable from a respective arm of the plurality of arms;

deploying at least one anchor of the plurality of anchors to secure the annuloplasty device to tissue at the target site; and
after deploying the at least one anchor, reducing a diameter of the annuloplasty device by releasing the annuloplasty device from the delivery device, wherein upon release from the delivery device the annuloplasty device assumes a pre-set configuration smaller than the radially expanded configuration.

Assignees

• Medtronic Vascular Inc

Inventors

• Metcalf Olivia
• Genovese Matthew E
• Dorff Caitlin
• Grimm Emily
• Fatemi Far Fatemeh
• Punga Karan

Classifications

• A61F2/243 Primary

  Deployment by mechanical expansion · CPC title

• A61F2/2436

  Deployment by retracting a sheath · CPC title

• A61F2/2445

  Annuloplasty rings in direct contact with the valve annulus · CPC title

• A61F2220/0016

  with sharp anchoring protrusions, e.g. barbs, pins, spikes · CPC title

• A61F2250/001

  for adjusting a diameter · CPC title