This is a paid asset, but now you can download Motion open Heart Free.
Detail this asset from Unity Store: Original Link
Motion open Heart v1.0 (Latest version)
“If possible, please buy the package to support the developer”
Detailed and Animated open heart anatomy.
With real movement and exact animation of the cardiac cycle.
Include Real valves animation secuence.
Comes with HD textures 2048×2048 and HD normalmaps for better and real results on education, and games. Ready for (VR) Virtual Reality scenes and Augmented Reality (AR).
for support: contact us