โ Scribed by Younkin, C. N.
No coin nor oath required. For personal study only.
The biomaterials engineer of today has an extremely limited choice of approved metallic implant alloys with which to conduct his studies. There is essentially no incentive for larger companies to initiate basic research in the biomaterials field. New alloys which would have the best chance of developing as biomaterials would be โspinโoffโ alloys from somewhat related industries and currently in production. MP35N is just such a spinโoff alloy with a background of years of inโvitro testing and use in corrosive environments. When compared to the desired implant material requirements, the material properties required of MP35N for present applications readily indicate its potential use as a biomaterial.
It is a castable alloy which exhibits good asโcast ductility. In the wrought condition, yield strength levels from 60,000 to over 310,000 psi are possible with accompanying good ductility characteristics. Excellent stress corrosion cracking resistance and improved fatigue strength over present cast implant material are also characteristic of MP35N. Results, to date, from inโvivo tests indicate tissue compatibility of MP35N at least comparable to HSโ21 (Vitallium).
Possible medical applications for MP35N would include hip and knee joints, bone plates, heart pacer electrodes, suture wire and clips, and Endosseous blade implants.
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