Prosthetic heart valves
Inventors
Iyer, Ramji • Schneider, Lucas Tradd • Askegaard, Gunnar Paul
Assignees
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Publication Number
US-11672655-B1
Publication Date
2023-06-13
Expiration Date
Abstract
Some embodiments described herein include a heart valve replacement system that may be delivered to a targeted native heart valve site via one or more delivery catheters. In some embodiments, a prosthetic heart valve of the system includes structural features that securely anchor the prosthetic heart valve to the site of the native heart valve. Such structural features can provide robust migration resistance. In particular implementations, the prosthetic heart valves occupy a smaller delivery profile, thereby facilitating a smaller delivery catheter for advancement to the heart.
Core Innovation
The invention relates to a prosthetic heart valve having a main body with an inflow end portion and an outflow end portion, together with an occluder extending between the inflow end portion and outflow end portion along a longitudinal axis. The occluder includes valve leaflets attached to the main body such that the arrangement allows blood flow through the occluder from the inflow end portion toward the outflow end portion and prevents blood flow from the outflow end portion toward the inflow end portion.
The prosthetic heart valve further includes a posterior flap extending transverse to the longitudinal axis and away from the outflow end portion of the main body. A first anterior flap and a second anterior flap extend away from the outflow end portion and away from the posterior flap, and portions of the first anterior flap and the second anterior flap are configured to overlap when the prosthetic heart valve is deployed.
In other embodiments, an anterior flap extends along a first direction transverse to the longitudinal axis and away from the outflow end portion, and includes a mid-body portion bent at an angle that directs a terminal end portion of the anterior flap partially toward the inflow end portion. The valve also includes a leaflet engagement member extending from the main body toward the inflow end portion and terminating at a free end, and a covering attached to the anterior flap that defines an opening through a terminal end portion of the anterior flap.
Claims Coverage
The independent claims recite three related prosthetic heart valve configurations. Across the independent claims, the coverage includes a leaflet-based occluder that permits forward blood flow and prevents reverse blood flow, with posterior and anterior flap structures configured for deployment-time overlap or a bent anterior flap geometry, and optionally a leaflet engagement member and a covering that defines openings.
Occluder arranged for forward flow and reverse flow prevention
An occluder extending between the inflow end portion and outflow end portion along a longitudinal axis, the occluder comprising valve leaflets attached to the main body in an arrangement that allows blood flow from the inflow end portion toward the outflow end portion and prevents blood flow from the outflow end portion toward the inflow end portion.
Posterior flap and two anterior flaps with deployed overlap
A posterior flap extending transverse to the longitudinal axis and away from the outflow end portion of the main body; a first anterior flap and a second anterior flap extending away from the outflow end portion and away from the posterior flap, wherein portions of the first anterior flap and the second anterior flap are configured to overlap when the prosthetic heart valve is deployed.
Leaflet engagement member terminating at a free end
A leaflet engagement member extending from the main body toward the inflow end portion and terminating at a free end.
Circular cross-sectional occluder and bent anterior flap
An occluder having a circular cross-sectional shape; an anterior flap extending along a first direction transverse to the longitudinal axis and away from the outflow end portion, wherein the anterior flap includes a mid-body portion bent at an angle that directs a terminal end portion of the anterior flap partially toward the inflow end portion.
Covering defining an opening through a terminal end portion
A covering attached to the anterior flap, wherein the covering defines an opening through a terminal end portion of the anterior flap.
Across the independent claims, the inventive subject matter focuses on a leaflet-based occluder arrangement for one-way blood flow, combined with posterior and anterior flap structures configured for deployed overlap or a bent anterior flap geometry, and optionally a leaflet engagement member and a covering that defines an opening through a terminal end portion of the anterior flap.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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