Apparatuses and methods for heart valve repair

• US 20040133273A1
• Filed: 12/17/2003
• Published: 07/08/2004
• Est. Priority Date: 11/15/2002
• Status: Active Grant

• Current Assignee: Advanced Cardiovascular Systems Incorporated (Abbott Laboratories)
• Original Assignee: Advanced Cardiovascular Systems Incorporated (Abbott Laboratories)
• Inventors: Cox, Daniel L.
• Granted Patent: US 7,226,477 B2
• Time in Patent Office: Days
• US Class Current: 623/2.11
• CPC Class Codes: A61F 2/2451 Inserts in the coronary sinus for correcting the valve shape
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2002/828 Means for connecting a plurality of stents allowing flexibility of the whole structure
• CPC Class Codes: A61F 2250/001 for adjusting a diameter
• CPC Class Codes: Y10T 24/39 Cord and rope holders

Abstract

A medical device for treating a defective heart valve. The medical device comprises a delivery sheath and an implantable device moveably disposed within the delivery sheath. The implantable device further comprises a distal expandable basket, a proximal expandable basket, and a connecting member coupling at a first end to the distal expandable basket and at a second end to the proximal expandable basket. Each of the distal expandable basket and proximal expandable basket is in a collapsed state during delivery and an expanded state after deployment. An actuator is releasably coupled to the implantable device. When coupled to the implantable device, the actuator can move the implantable device in a way to allow for positioning of the distal and proximal expandable baskets.

Claims

1. A medical device comprising:

a delivery sheath;

an implantable device moveably disposed within the delivery sheath, the implantable device further comprises a distal expandable basket, a proximal expandable basket, and a connecting member coupling at a first end to the distal expandable basket and at a second end to the proximal expandable basket, each of the distal expandable basket and proximal expandable basket being collapsed during delivery and expanded after deployment; and

an actuator releasably coupling to the implantable device, the actuator to move the implantable device when coupled to the implantable device.

2. The medical device as in claim 1 wherein the distal expandable basket is deployable against an inner wall of a coronary sinus adjacent a mitral valve annulus, the proximal expandable basket is deployable against the inner wall or at an entrance of the coronary sinus, and the implantable device to reshape the coronary sinus.

3. The medical device as in claim 1 wherein the distal expandable basket is deployable against an inner wall of a coronary vein adjacent a mitral valve annulus, the proximal expandable basket is deployable against the inner wall or at an entrance of a coronary sinus, wherein the coronary vein and the coronary sinus are part of a vessel and the implantable device to reshape the vessel.

4. The medical device as in claim 2 wherein each of the distal expandable basket and the proximal expandable basket includes a strut assembly that is collapsible and expandable, the delivery sheath to constrain each of the distal expandable basket and the proximal expandable basket, and retraction of the delivery sheath allows deployment of the distal expandable basket and the proximal expandable basket.

5. The medical device as in claim 1 wherein the distal expandable basket is engageable to an inner wall of a blood vessel, the proximal expandable basket is engageable to the inner wall of the blood vessel, the connecting member is deployable on a side of the inner wall of the blood vessel, and the medical device reshapes the blood vessel.

6. The medical device as in claim 1 wherein each of the distal expandable basket, and the proximal expandable basket is comprised of a shaped-memory material.

7. The medical device as in claim 1 wherein the distal expandable basket includes a distal end that is fixed on the connecting member and a proximal end that is slideable along the connecting member.

8. The medical device as in claim 1 wherein the distal expandable basket includes a proximal end that is fixed on the connecting member and a distal end that is slideable along the connecting member.

9. The medical device as in claim 1 wherein the proximal expandable basket includes a proximal end that is fixed on the connecting member and a distal end that is slideable along the connecting member.

10. The medical device as in claim 1 wherein the proximal expandable basket includes a distal end that is fixed on the connecting member and a proximal end that is slideable along the connecting member.

11. The medical device as in claim 1 wherein the proximal expandable basket includes a proximal end and a distal end that are slideable over the connecting member and are not fixed on the connecting member and where the connecting member further includes a proximal lock and a distal stop to fix the proximal expandable basket at a location along the connecting member.

12. A method of implanting an implantable device in a blood vessel comprising:

advancing into a blood vessel a medical device that comprises a delivery sheath, an implantable device moveably disposed within the delivery sheath, and an actuator releasably coupling to the implantable device, the implantable device further comprises a distal expandable basket, a proximal expandable basket, and a connecting member coupling at a first end to the distal expandable basket and at a second end to the proximal expandable basket; and

deploying the distal expandable basket and the proximal expandable basket, each of which is delivered in a collapsed state and expanded after deployment, the distal expandable basket is deployed against the inner wall of the blood vessel at a first site, the proximal expandable basket is deployed against the inner wall of the blood vessel at a second site or outside the blood vessel and butting up against the blood vessel, the deploying reshapes the blood vessel.

13. The method as in claim 12 wherein the blood vessel is a coronary sinus and wherein after the deploying, the connecting member is deployed on a side of the inner wall of the coronary sinus that is adjacent a mitral valve annulus.

14. The method of claim 12 wherein the deploying further comprising:

advancing the delivery sheath distally into the blood vessel;

positioning the delivery sheath to have that the distal expandable basket at a desired deployed location within the blood vessel;

retracting the delivery sheath proximally to the distal expandable basket to deploy the distal expandable basket;

applying tension on the actuator while positioning the proximal expandable basket into another desired deployed location;

retracting the delivery sheath proximally to the proximal expandable basket to deploy the proximal expandable basket; and

detaching the actuator from the implantable device after the distal expandable basket and the proximal expandable basket are deployed.

15. The method of claim 14 wherein the blood vessel is a coronary sinus.

16. The method of claim 12 further comprises advancing the delivery sheath back over the proximal expandable basket or the distal expandable to collapse the proximal expandable basket or the distal expandable in order to adjust, reposition, or remove the implantable device.

17. A method for treating a defective heart valve comprising:

advancing into a blood vessel that is adjacent the defect heart valve a medical device that comprises

a delivery sheath;

an implantable device moveably disposed within the delivery sheath, the implantable device further comprises a distal expandable basket, a proximal expandable basket, and a connecting member coupling at a first end to the distal expandable basket and at a second end to the proximal expandable basket; and

an actuator releasably coupling to the implantable device;

retracting the delivery sheath sufficiently to deploy the distal expandable basket;

retracting the delivery sheath sufficiently to deploy the proximal expandable basket;

optionally, advancing the delivery sheath over one or both of the proximal expandable basket and the distal expandable basket to adjust or reposition one or both of the proximal expandable basket and the distal expandable basket; and

removing the actuator when deployment is complete.

18. The method of claim 17 wherein the blood vessel is a coronary sinus.