Prosthetic valved conduits with mechanically coupled leaflets
Inventors
Dienno, Dustin V. • Dunham, Michael G. • Hartman, Cody L.
Assignees
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Publication Number
US-12419740-B2
Publication Date
2025-09-23
Expiration Date
Abstract
Described embodiments are directed toward centrally-opening leaflet prosthetic valve devices having a leaflet frame and a non-sewn mechanically coupled leaflet. The described leaflet frames have projections that are configured to couple with apertures located within the leaflet attachment region of a leaflet. Some embodiments are further directed toward pulmonary valved conduits incorporating such leaflet and leaflet frame constructs. Methods of making and using such prosthetic valve devices are also described amongst others.
Core Innovation
The invention relates to a prosthetic valve that includes at least one leaflet having a leaflet attachment region and a leaflet free edge. A leaflet frame defines an annular shape and includes leaflet frame projections extending from leaflet frame edges into the leaflet attachment region so that the projections extend through the leaflet attachment region. Leaflet retention is achieved by mechanical coupling via the leaflet attachment region rather than by sewing or adhesive/thermal bonding.
One or more restraining elements are configured to impede decoupling of the leaflet from the leaflet frame. The restraining elements extend in a direction that is substantially parallel with a central longitudinal axis of the prosthetic valve. Additional disclosed restraining configurations include projection head/base interference and locking mechanisms using deformable locking bars with locking clips and/or attachable locking bars with retention hooks.
The leaflet/frame construct further includes commissure posts and leaflet window frame elements flanking each side of each commissure post to define leaflet windows. The disclosure specifies leaflet window sides and a leaflet window base, including a leaflet window arrangement constrained as an isosceles trapezoid with a substantially straight base edge, and slot-based receiving paths including post slots, side receiving slots, and base receiving slots.
Claims Coverage
The document contains two independent claims covering a mechanically coupled prosthetic valve with annular leaflet frame projections extending through leaflet attachment regions and restraining elements that impede decoupling, with one claim further adding commissure posts, leaflet windows, and post slots.
Leaflet frame projections extending through leaflet attachment region
A leaflet frame having one or more leaflet frame edges, with a plurality of leaflet frame projections extending from at least one of the leaflet frame edges, each extending through the leaflet attachment region of the leaflet.
Restraining elements extend substantially parallel to central longitudinal axis
One or more restraining elements configured to impede decoupling of the leaflet from the leaflet frame, extending in a direction that is substantially parallel with a central longitudinal axis of the prosthetic valve.
Leaflet retention surface defined by leaflet frame edges and internal edge
A leaflet retention surface that is one or more of the leaflet frame second edge, the leaflet frame first edge, and the at least one leaflet frame internal edge.
Commissure posts and leaflet windows defined by commissure posts and window frame elements with post slots
A plurality of commissure posts and a set of leaflet window frame elements flanking each side of each commissure post, wherein each set and two commissure posts defines a leaflet window, and each commissure post has a post slot through which a portion of the leaflet attachment region adjacent the leaflet free edge extends so that a portion of two leaflets extends through each post slot.
Leaflet frame projections extend through leaflet attachment region
A plurality of leaflet frame projections extending from at least one of the leaflet frame first edge, the leaflet frame second edge, or the at least one leaflet frame internal edge, wherein each of the leaflet frame projections extends through the leaflet attachment region of the leaflet.
Restraining elements impede decoupling
One or more restraining elements configured to impede decoupling of the leaflet from the leaflet frame.
Overall, the claim coverage centers on a mechanically coupled leaflet-to-annular leaflet frame structure where leaflet frame projections extend through the leaflet attachment region, together with one or more restraining elements configured to impede decoupling. The second independent claim further adds commissure posts, leaflet windows defined by commissure posts and flanking window frame elements, and post slots that route portions of the leaflet attachment region adjacent the leaflet free edge.
Stated Advantages
Impedes decoupling of the leaflet from the leaflet frame.
Documented Applications
No documented applications found
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