HYPOTUBE SHAFT WITH ARTICULATION MECHANISM

• US 20160135952A1
• Filed: 01/22/2016
• Published: 05/19/2016
• Est. Priority Date: 05/04/2012
• Status: Active Grant

• Current Assignee: St. Jude Medical Cardiology Division Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: St. Jude Medical Cardiology Division Incorporated (Abbott Laboratories Incorporated)
• Inventors: Laplante, Jeffrey P., Klima, Daniel J.
• Granted Patent: US 10,213,300 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 2017/00243 cardiac
• CPC Class Codes: A61B 2017/00318 Steering mechanisms
• CPC Class Codes: A61F 2/2427 Devices for manipulating or deploying heart valves during implantation
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2250/0006 for adjusting angular orientation
• CPC Class Codes: A61M 2025/015 Details of the distal fixation of the movable mechanical means
• CPC Class Codes: A61M 25/0147 with movable mechanical means, e.g. pull wires

Abstract

A delivery device for a prosthetic heart valve includes a shaft, a sheath, and a pull wire. The shaft has a proximal end, a distal end, and a longitudinal axis. The sheath is attached to the shaft and is rotatable about an axis transverse to the longitudinal axis of the shaft. The pull wire is mechanically coupled to the sheath such that movement of the pull wire rotates the sheath relative to the shaft. The sheath may be in a first position relative to the shaft when a distal end of the pull wire is in a first position and may be in a second position when the distal end of the pull wire is in a second position. Deflection of the sheath relative to the shaft enables a prosthetic valve to be axially aligned with the native valve annulus for deployment.

Claims

1. -8. (canceled)

9. A device for delivering a medical aid into a patient, the device comprising:

a hollow shaft having proximal and distal ends, a longitudinal axis, and a flexible portion between the proximal and distal ends, the flexible portion being configured to bend away from the longitudinal axis;

a guide bushing having a first lumen, the guide bushing being sized to matingly engage the hollow shaft distal end;

a pull wire mechanically coupled to the guide bushing; and

a flexible tube extending through the first lumen of the guide bushing, the flexible tube having a second lumen,

wherein the guide bushing is in a first position when the pull wire is in a first position and the guide bushing is in a second position when the pull wire is in a second position.

10. The device of claim 9, wherein the flexible tube is in a first position when the pull wire is in the first position and the flexible tube is in a second position when the pull wire is in the second position.

11. The device of claim 9, further comprising a resilient member extending through the flexible portion of the hollow shaft and attached to proximal and distal portions of the hollow shaft.

12. The device of claim 11, wherein the resilient member is a spring having a flat surface such that movement of the resilient member is substantially within a plane perpendicular to the flat surface.

14. The device of claim 9, further comprising an elastomeric sleeve that tightly covers the flexible portion of the hollow shaft to prevent blood leakage through the flexible portion.

21. The device of claim 9, wherein an end of the guide bushing is received in the hollow shaft distal end.

22. The device of claim 9, further comprising a valve assembled on the flexible tube, wherein the valve is in a first position when the pull wire is in the first position and the valve is in a second position when the pull wire is in the second position.

23. The device of claim 22, further comprising a sheath slidable relative to the flexible tube between a first position in which the sheath surrounds the valve and holds the valve in a contained configuration and a second position in which the sheath exposes the valve for deployment.

13. The device of 9, wherein the first lumen of the guide bushing has a central axis, the central axis of the first lumen and the longitudinal axis of the hollow shaft being parallel when the guide bushing is in the first position, and the central axis of the first lumen and the longitudinal axis of the hollow shaft being transverse to each other when the guide bushing is in the second position.

15. A device for delivering a medical aid into a patient, the device comprising:

a hollow shaft having a proximal portion, a distal portion having an inner surface along a portion of a length thereof defining a narrowed inner lumen of the hollow shaft, and a flexible portion between the proximal and distal portions, the hollow shaft proximal portion having a longitudinal axis and the flexible portion being configured to bend away from the longitudinal axis;

a pull wire mechanically coupled to the hollow shaft; and

a flexible tube extending through the narrowed inner lumen of the hollow shaft, the flexible tube having a second lumen,

wherein the hollow shaft distal portion is in a first position when the pull wire is in a first position and the hollow shaft distal portion is in a second position when the pull wire is in a second position.

16. The device of claim 15, wherein the flexible tube is in a first position when the pull wire is in the first position and the flexible tube is in a second position when the pull wire is in the second position.

17. The device of claim 15, further comprising a resilient member attached to the proximal and distal portions of the hollow shaft and extending through the flexible portion.

18. The device of claim 17, wherein the resilient member is a spring having a flat surface such that movement of the resilient member is substantially within a plane perpendicular to the flat surface.

19. The device of claim 15, wherein the hollow shaft distal portion has a central axis, the central axis and the longitudinal axis of the hollow shaft proximal portion being parallel when the hollow shaft distal portion is in the first position, and the central axis and the longitudinal axis of the hollow shaft proximal portion being transverse to each other when the hollow shaft distal portion is in the second position.

20. The device of claim 15, further comprising an elastomeric sleeve that tightly covers the flexible portion of the hollow shaft to prevent blood leakage through the flexible portion.

24. The device of claim 15, wherein the hollow shaft distal portion includes a crimped section.

25. The device of claim 15, wherein the hollow shaft distal portion has a central axis and an end of the hollow shaft distal portion is rolled inwardly toward the central axis to define an opening of the hollow shaft.

26. The device of claim 25, wherein the flexible tube contacts the hollow shaft opening to substantially fix the radial position of the flexible tube relative to the hollow shaft.

27. The device of claim 15, further comprising a valve assembled on the flexible tube, wherein the valve is in a first position when the pull wire is in the first position and the valve is in a second position when the pull wire is in the second position.

28. The device of claim 27, further comprising a sheath slidable relative to the flexible tube between a first position in which the sheath surrounds the valve and holds the valve in a contained configuration and a second position in which the sheath exposes the valve for deployment.