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

a valve replacement and valve valve technology, applied in the field of stent valves, can solve the problems of increasing the risks, death, and limits of patients' activities, and achieve the effect of facilitating a surgical approach and reducing risks

Inactive Publication Date: 2007-09-13
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides systems, methods, and devices for replacing damaged cardiac valves with stent-valves. The invention offers a minimally-invasive surgical approach that reduces risks associated with traditional surgeries and secondary surgeries. The stent-valves include a valve component and at least one stent component, which can be expanded within the patient's body while remaining attached to a delivery device. The stent-valves can be secured axially to the valve in need of replacement using sutures, hook-and-loop fastening systems, or other means. The stent-valves may include a lattice structure with cells that provide added support and facilitate recapture of the stent-valve from the partially-expanded configuration to the collapsed configuration. Overall, the invention offers a safer and more effective method for replacing damaged cardiac valves.

Problems solved by technology

However, tissue adherences resulting from the first surgery may increase the risks (e.g., death) associated with subsequent valve replacement surgeries.
Such anti-coagulant treatment significantly limits patients' activities and can cause various other complications.
Biological valves do not require such anti-coagulation treatment but typically fail within 10-15 years.
These PHVT attempts have various shortcomings, including their inability to ensure proper positioning and stability of the replacement valve within the patient's body.
Conventional closure devices for closing access orifices are also lacking in several respects, including the looseness of their fit which can cause bleeding after surgery.
These closure devices also lack a central lumen, which renders them incompatible with guide wire delivery systems.

Method used

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

Examples

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Embodiment Construction

[0061]FIGS. 1A-3B show components 100, 200, and 300 for use in replacing, for example, a failed (e.g., degenerated) aortic valve, mitral valve, or pulmonary cardiac valve (e.g., in a pediatric patient) in accordance with some embodiments of the present invention. More particularly, FIGS. 1A and 1B show a valve component 100. FIGS. 2A-2C show a stent component 200 for housing valve component 100. FIGS. 3A and 3B show a stent component 300 for housing stent component 200 and valve component 100. A device that includes components 100 and 200 may be referred to as a single-stent-valve. A device that additionally includes component 300 may be referred to as a double-stent-valve.

[0062]FIG. 4 shows a double-stent-valve 400 that includes valve component 100, stent component 200, and stent component 300 in accordance with some embodiments of the present invention. Double-stent-valve 400 may replace a failed native or artificial valve. As used herein, a “native valve” refers to a valve natur...

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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.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] The present application claims the benefit of U.S. Provisional Patent Application Nos. 60 / 753,071, filed Dec. 22, 2005, 60 / 755,590, filed Dec. 29, 2005, and 60 / 843,181, filed Sep. 7, 2006, each of which is incorporated by reference herein in its entirety.FIELD OF THE INVENTION [0002] Embodiments of the present invention relate to stent-valves, associated methods and systems for their delivery via minimally-invasive surgery, and guide-wire compatible closure devices for sealing access orifices. BACKGROUND OF THE INVENTION [0003] Conventional approaches for cardiac valve replacement require the cutting of a relatively large opening in the patient's sternum (“sternotomy”) or thoracic cavity (“thoracotomy”) in order to allow the surgeon to access the patient's heart. Additionally, these approaches require arrest of the patient's heart and a cardiopulmonary bypass (i.e., use of a heart-lung bypass machine to oxygenate and circulate the patie...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61F2/24
CPCA61F2/2418A61F2/243A61F2/2433A61F2/2436A61F2/2472A61F2230/0078A61F2220/0016A61F2220/0075A61F2220/0083A61F2230/0013A61F2230/0067A61F2250/006A61F2/90A61F2/966A61F2002/9511A61F2210/0042A61F2250/001A61F2250/0039A61F2002/9505A61F2002/9665A61F2210/0014A61F2/9522A61B17/12031A61B17/12131A61B2017/00606A61B2017/00623A61B2017/12095A61B17/0057A61M39/22A61F2/82A61F2/2427A61F2002/9534A61F2220/0033A61F2230/001
Inventor VON SEGESSER, LUDWIG K.DELALOYE, STEPHANE
Owner SYMETIS
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