Other

David L Yoon

William W Angell

A binder system is disclosed that flexibly secures one or more flat objects including by mechanical grasping of flat-shaped or sheet materials in a central spring clamp having a compact cross-sectional geometry that can adapt to several sizes of clamped materials and uses. The spring clamp comprises an elongated tri-folded spine with a flat central portion and flat side portions, and flat cover supports that are attached by hinged means to the side portions of the spine. The flat central portion aids a user in opening and keeping the system in its open configuration. In some aspects the system includes customizable covers attachable to said cover supports.

Articulated sheet binder apparatus

An anatomically configured stent for a tanned, expanded natural tissue heart valve, a valve prosthesis including the stent, and a process for preparing the prosthesis are disclosed. The stent comprises a frame having three struts, two of which are biased radially inwardly and the third of which is also biased radially inwardly or generally parallel to the frame axis and a fabric cover covering at least the exterior of the frame, the cover having a bead along its perimeter that provides a site for attachment of the valve to the stent.

Heart valve stent and process for preparing a stented heart valve

An anatomically configured stent for a tanned, expanded natural tissue heart valve and a valve prosthesis including the stent are disclosed. The stent comprises a frame whose interior configuration is the anatomical negative of the exterior configuration of a tanned, expanded, natural tissue valve and a fabric cover covering at least the exterior of the frame, the cover having a bead along its perimeter that provides a site for attachment of the valve to the stent.

Growing community of inventors

East Lansing, MI, United States of America

David L Yoon