Stents for prosthetic heart valves

• US 9,333,100 B2
• Filed: 11/22/2013
• Issued: 05/10/2016
• Est. Priority Date: 01/24/2008
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Young, Melissa, Awad, Maria, Eberhardt, Carol E., Tabor, Charles, Majkrzak, Carolyn, Ryan, Timothy R., Shay, Janice L.
• Primary Examiner(s): Sweet, Thomas J
• Assistant Examiner(s): Mathew, Seema
• Application Number:
  US14/087,990
• Publication Number:
  US 20140081383A1
• Time in Patent Office: 900 Days
• Field of Search: 623/1.24, 623 21- 217
• US Class Current: 1/1
• 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 2/2436 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 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 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. 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; and

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

wherein a first leaflet and a second leaflet of the plurality of leaflets extend though a slot in the stent structure, through the longitudinal slot of the slot bar, and are secured to the slot bar.

2. The stented valve of claim 1, wherein the longitudinal slot of the slot bar comprises a first longitudinal slot and a second longitudinal slot extending along a portion of its length,

wherein the first leaflet extends through the first longitudinal slot and the second leaflet extends through the second longitudinal slot.

3. The stented valve of claim 2, further comprising a first protective member extending through the first longitudinal slot and positioned between the first leaflet and the slot bar and a second protective member extending through the second longitudinal slot and positioned between the second leaflet and the slot bar.

4. The stented valve of claim 3, 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 first and second protective members are secured to the slot bar by one or more sutures passing through at least one of the plurality of holes.

5. The stented valve of claim 1, further comprising at least one protective member extending through the longitudinal slot of the slot bar and disposed between the slot bar and at least one of the first and second leaflets.

6. The stented valve of claim 5, 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.

7. The stented valve of claim 6, 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.

8. The stented valve of claim 5, wherein the at least one protective member comprises a first protective member extending through the longitudinal slot and disposed between the slot bar and the first leaflet, and a second protective member extending through the longitudinal slot and disposed between the slot member and the second leaflet.