Stent-valves for valve replacement and associated methods and systems for surgery

• US 9,839,515 B2
• Filed: 08/28/2014
• Issued: 12/12/2017
• Est. Priority Date: 12/22/2005
• Status: Active Grant

• Current Assignee: Boston Scientific Medical Device Limited (Boston Scientific Corporation)
• Original Assignee: Symetis SA (Boston Scientific Corporation)
• Inventors: Von Segesser, Ludwig K., Delaloye, Stphane
• Primary Examiner(s): Sweet, Thomas J
• Assistant Examiner(s): SHIPMON, TIFFANY P
• Application Number:
  US14/471,731
• Publication Number:
  US 20150018938A1
• Time in Patent Office: 1,202 Days
• Field of Search: 623 21, 623 124
• CPC Class Codes: A61B 17/0057 Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect sutures A61B17/04; closing rectum or urethra near body surface A61F2/0009
• CPC Class Codes: A61B 17/12031 complete occlusion
• CPC Class Codes: A61B 17/12131 characterised by the type of occluding device
• CPC Class Codes: A61B 2017/00606 Implements H-shaped in cross-section, i.e. with occluders on both sides of the opening
• CPC Class Codes: A61B 2017/00623 Introducing or retrieving devices therefor
• CPC Class Codes: A61B 2017/12095 Threaded connection
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2427 Devices for manipulating or deploying heart valves during implantation
• 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 2/2472 Devices for testing
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/9522 Means for mounting a stent or stent-graft onto or into a placement instrument
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• 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 2002/9534 for repositioning of stents
• CPC Class Codes: A61F 2002/9665 with additional retaining means
• CPC Class Codes: A61F 2210/0014 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2210/0042 : using a fluid, e.g. circulating
• CPC Class Codes: A61F 2220/0016 : with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2220/0033 : made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
• 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 2220/0083 : using hook and loop-type fasteners
• CPC Class Codes: A61F 2230/001 : Figure-8-shaped, e.g. hourglass-shaped
• CPC Class Codes: A61F 2230/0013 : Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped
• CPC Class Codes: A61F 2230/0067 : conical
• CPC Class Codes: A61F 2230/0078 : hyperboloidal
• CPC Class Codes: A61F 2250/001 : for adjusting a diameter
• CPC Class Codes: A61F 2250/0039 : differing in diameter
• CPC Class Codes: A61F 2250/006 : modular

Abstract

Stent-valves (e.g., single-stent-valves and double-stent-valves), associated methods and systems for their delivery via minimally-invasive surgery, and guide-wire compatible closure devices for sealing access orifices are provided.

Claims

1. A replacement valve for use within a human body comprising:

a valve component; and

a stent component comprising;

a first section comprising an annular groove, and

a second section for housing the valve component,

wherein;

the stent component and the valve component are configured to form a stent-valve, the stent-valve is configured;

in a collapsed configuration for delivery at an implantation site,

a self-expanding expanded configuration after delivery to the implantation site;

the annular groove is defined by an annular indentation of the stent component which correspondingly presents an indented interior surface of the stent component,

the annular groove including a diameter that is slightly larger than a diameter of the implantation site such that the stent-valve is secured in place by a friction fitting;

the valve component is housed by the second section and extends down to the annular groove of the first section,

the valve component is axially taller than the annular groove.

2. The replacement valve according to claim 1, wherein the stent component further comprises a plurality of attachment elements for removable attachment to a complimentary structure of a delivery device for delivering the replacement valve, the attachment elements positioned at an opposite end of the stent component to the first section.

3. The replacement valve according to claim 2, wherein there are three attachment elements.

4. The replacement valve according to claim 2, wherein when the stent-valve is in the expanded configuration, the diameter of the stent component in a region of the attachment elements is smaller than the diameter of the second section of the stent component.

5. The replacement valve according to claim 2, wherein the attachment elements project partially inwardly toward a center axis of the stent component.

6. The replacement valve according to claim 2, wherein each attachment element comprises a geometrical opening.

7. The replacement valve according to claim 1, wherein the stent component comprises a structure including a plurality of cells.

8. The replacement valve according to claim 7, wherein the plurality of cells comprise closed cells to facilitate recapture of the stent-valve from a partially expanded condition to the collapsed configuration.

9. The replacement valve according to claim 1, wherein the valve component comprises a valve made from bovine pericardium.