Design of Pseudoelastic Implants to Apply to Cardiology

Products made of materials with shape memory effect and pseudoelasticity are widely used in different areas of medical practice. However despite of their widespread use, the development of new methods of treatment as well as a set of special cases necessitate creation of new products and their testing to ensure efficiency. The present work investigates the possibility to use Ti-Ni alloys with shape memory effect and pseudoelasticity as a material for implants which correct abnormal enlargement of anatomical structures in the mitral valve of the heart.

To investigate how mechanical properties of the implant material change in process of exploitation, simulation of the implant operation has been used. It is shown that a preliminary deformation cycling provides stabilization of the full range of mechanical properties, and this guarantees the constant shape of implant after its installation.