CPC A61B 7/02 (2013.01) [B22F 3/1021 (2013.01); B22F 3/225 (2013.01); B22F 3/227 (2013.01); B22F 3/24 (2013.01); B22F 5/10 (2013.01); G10K 13/00 (2013.01); B22F 2003/242 (2013.01); B22F 2003/247 (2013.01); B22F 2998/10 (2013.01)] | 20 Claims |
1. A stethoscope chestpiece comprising:
a body member having a bottom surface;
an ejector mark disposed on the bottom surface;
wherein the stethoscope chestpiece has a weight of at least 50 g, and a surface roughness (Ra) no greater than 1.6 microns in an unpolished state and reflectivity (% R) of at least 60% in an unpolished state,
wherein the stethoscope chestpiece has been produced by
injection molding, extruding, or pressing a metallic thermoplastic composition into a mould forming a green molded body,
debinding a portion of binder material from green molded body to form a brown molded body without reducing the temperature by more than 80° C.;
sintering the brown molded body to form the stethoscope chestpiece.
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