Mitral Butterfly

The Mitral Butterfly implant offers reconstruction of the mitral valve in case of mitral valve prolapse. It is an innovative transvascular implant with unique adaptation capabilities that emulates conventional chordal repair. Delivering the implant via a catheter to the prolapsing segment of the valve, provides a minimally invasive procedure with no need for major surgery.

Mitral Butterfly consists of a nitinol-stent and PTFE (polytetrafluorethylene [polymer]) yarns, that represent artificial chordae. Upon deployment, the device spreads its nitinol wings above the prolapsing segment. The PTFE yarns replace broken chordae, prevent prolapse of the diseased parts, and guarantee a dense and functional valve. The PTFE filaments are extended to a hook in the ventricle mimicking a papillary muscle. The mitral annulus remains unaffected and no unintentional forces strain the myocardium.

Currently, Mitral Butterfly is in the stage in vitro and preclinical testing. Proof of concept was verified using passively perfused porcine hearts with native valves and after manually cutting chordae. With an endoscope we visualized the implant in motion and documented its performance in normal and artificially incompetent valves.