STENTS FOR PROSTHETIC HEART VALVES

• US 20140081383A1
• Filed: 11/22/2013
• Published: 03/20/2014
• Est. Priority Date: 01/24/2008
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: EBERHARDT, Carol E., TABOR, Charles, RYAN, Timothy R., SHAY, Janice L., MAJKRZAK, Carolyn, DENTON, Melissa, BOTROUS, Maria
• Granted Patent: US 9,333,100 B2
• Time in Patent Office: Days
• US Class Current: 623/1.24
• CPC Class Codes: A61F 2/013 Distal protection devices, i.e. devices placed distally in combination with another endovascular procedure, e.g. angioplasty or stenting
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/2403 with pivoting rigid closure members check valves with hinged closure members in general F16K15/03
• CPC Class Codes: A61F 2/2412 with soft flexible valve members, e.g. tissue valves shaped like natural valves check valves with flexible valve members in general F16K15/14
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/243 Deployment by mechanical expansion
• CPC Class Codes: A61F 2/2433 using balloon catheter
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2/2439 Expansion controlled by filaments
• CPC Class Codes: A61F 2/82 Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00
• CPC Class Codes: A61F 2/89 the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2002/016 made from wire-like elements
• CPC Class Codes: A61F 2002/9505 having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument
• CPC Class Codes: A61F 2002/9511 the retaining means being filaments or wires
• CPC Class Codes: A61F 2220/0058 soldered or brazed or welded
• CPC Class Codes: A61F 2220/0075 sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: A61F 2220/0091 connected by a hinged linkage mechanism, e.g. of the single-bar or multi-bar linkage type
• CPC Class Codes: A61F 2230/0006 circular
• CPC Class Codes: A61F 2230/0054 : V-shaped
• CPC Class Codes: A61F 2230/008 : paraboloidal
• CPC Class Codes: A61F 2250/0018 : differing in elasticity, stiffness or compressibility
• CPC Class Codes: A61F 2250/003 : differing in adsorbability or resorbability, i.e. in adsorption or resorption time
• CPC Class Codes: A61F 2250/0039 : differing in diameter
• CPC Class Codes: A61F 2250/0098 : radio-opaque, e.g. radio-opaque markers

Abstract

A stented valve including a stent structure including a generally tubular body portion having a first end, a second end, an interior area, a longitudinal axis, and a plurality of vertical wires extending generally parallel to the longitudinal axis around a periphery of the body portion, wherein the plurality of vertical wires includes multiple commissure wires and at least one structural wire positioned between adjacent commissure wires, and a plurality of V-shaped wire structures having a first end, a second end, and a peak between the first and second ends, wherein a first end of each V-shaped structure extends from a first vertical wire and a second end of each V-shaped structure extends from a second vertical wire that is adjacent to the first vertical wire, wherein each V-shaped structure is oriented so that its peak is facing in the same direction relative to the first and second ends of the body portion, and a valve structure including a plurality of leaflets attached to the stent structure within the tubular body portion.

Claims

1-15. -15. (canceled)

16. A stented valve comprising:

a stent structure comprising a plurality of wires and multiple commissure attachment structures;

a valve structure comprising a plurality of leaflets;

at least one slot bar for securing the plurality of leaflets to the commissure attachment structures; and

at least one protective member positioned between the slot bar and the leaflets.

17. The stented valve of claim 16, wherein the slot bar comprises a longitudinal slot extending along a portion of its length.

18. The stented valve of claim 17, wherein a first and second leaflet extend through the longitudinal slot and are secured to the slot bar.

19. The stented valve of claim 18, wherein the slot bar further comprises a plurality of holes along the length of the slot bar on both sides of the longitudinal slot, and wherein the first and second leaflets and the at least one protective member are secured to the slot bar by one or more sutures passing through at least one of the plurality of holes.

20. The stented valve of claim 17, wherein the protective member extends along an entire length of the longitudinal slot.

21. The stented valve of claim 17, comprising a first protective member and a second protective member,

wherein the first protective member extends through the longitudinal slot and covers a portion of a first side of the slot bar, and

wherein the second protective member extends through the longitudinal slot and covers a portion of a second side of the slot bar.

22. The stented valve of claim 21, wherein the first and second protective members extend circumferentially beyond the slot bar and attach to the stent structure.

23. The stented valve of claim 16, wherein the protective member wraps around an outer periphery of the slot bar.

24. The stented valve of claim 16, wherein the slot bar is positioned within an interior area of the stent structure.

25. The stented valve of claim 17, wherein each commissure attachment structure comprises a longitudinal slot along a portion of its length,

wherein the slot bar is positioned on an exterior side of the stent structure, and

wherein a first and second leaflet extend through the longitudinal slot of the commissure attachment structure and the longitudinal slot of the slot bar and are secured to the slot bar.

26. The stented valve of claim 16, wherein the slot bar is secured to the stent structure.

27. The stented valve of claim 16, wherein the number of slot bars is equal to the number of commissure attachment structures.

28. The stented valve of claim 16, wherein the protective member comprises cloth.

29. The stented valve of claim 16, wherein the protective member comprises tissue.

30. The stented valve of claim 16, wherein the protective member comprises a polymer.

31. A stented valve comprising:

a stent structure comprising a plurality of wires and multiple commissure attachment structures;

a valve structure comprising a plurality of leaflets;

at least one slot bar for securing the plurality of leaflets to the commissure attachment structures, the slot bar comprising a longitudinal slot extending along a portion of its length; and

at least one protective member positioned between the slot bar and the leaflets,

wherein a first and second leaflet extend though the longitudinal slot and are secured to the slot bar, and

wherein the slot bar is secured to the stent structure.

32. The stented valve of claim 31, wherein the slot bar further comprises a plurality of holes along the length of the slot bar on both sides of the longitudinal slot, and wherein the first and second leaflets and the at least one protective member are secured to the slot bar by one or more sutures passing through at least one of the plurality of holes.

33. The stented valve of claim 32, wherein the one or more sutures securing the at least one protective member to the slot bar also secure the slot bar to the stent structure.

34. A stented valve comprising:

a stent structure comprising a plurality of wires and multiple commissure attachment structures;

a valve structure comprising a plurality of leaflets;

at least one slot bar for securing the plurality of leaflets to the commissure attachment structures, the slot bar comprising a first and second longitudinal slot extending along a portion of its length,

wherein a first leaflet extends through the first longitudinal slot and a second leaflet extends through the second longitudinal slot, and

wherein a first protective member is positioned between the first leaflet and the slot bar and a second protective member is positioned between the second leaflet and the slot bar.

35. The stented valve of claim 34, wherein the slot bar further comprises a plurality of holes along the length of the slot bar on outer sides of the first and second longitudinal slots, and wherein the first and second leaflets and the at least one protective member are secured to the slot bar by one or more sutures passing through at least one of the plurality of holes.