A medical implant has an element with at least a part thereof which is composed of piezoelectric material. The piezoelectric material is suitable for contact with body tissue and/or body fluids, and has the formula Na.sub.x K.sub.y NbO.sub.3, with 0.ltoreq.x.ltoreq.0.8, 0.2.ltoreq.y.ltoreq.1, and x+y=1.

Um implant médico tem um elemento com ao menos uma peça disso que seja composta do material piezoelectric. O material piezoelectric é apropriado para o contato com tecido do corpo e/ou líquidos de corpo, e tem a fórmula Na.sub.x K.sub.y NbO.sub.3, com 0.ltoreq.x.ltoreq.0.8, 0.2.ltoreq.y.ltoreq.1, e x+y=1.
 
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