This is a photorealistic model of a human heart with 2k textures for diffuse, cavity and normal map. Product comes in .rar archive with project for 3dsMax 2008 and up, including textures and .OBJ file in addition. So if you need OBJ file - just download whole project. OBJ file is in root of it and textures are in 'materiallibraries' directory. 3ds MAX file is in the scenes directory.
This product was used in music video and if you need a motion of heartbeat please feel free to contact me via support and I can sell you a motion cache files.