Heartvalves made in minutes control bloodflow immediately after being implanted into sheep cellpressnews
cells are used to living and growing inside, and we can spin full valves in a matter of minutes, in contrast to currently available technologies that can take weeks or months to make."
To make the valves, the researchers use air jets to direct liquid polymer onto a valve-shaped frame, resulting in a seamless meshwork of tiny fibers. The valves are designed to be temporary and regenerative: they provide a porous scaffold for cells to infiltrate, build upon, and eventually replace as the polymer biodegrades.
The team tested the valves' strength, elasticity, and ability to repeatedly open and close using a pulse duplicator, a machine that simulates the heartbeat.
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