REVIEW ON SHAPE MEMORY ALLOY ON BIOMEDICAL APPLICATIONS.

Shape memory alloys (SMA) have the ability to return to a former shape when subjected to heating. Shape memory properties gives a very attractive insight into materials science, opening unexplored horizons and giving access to unconventional functions in every material class. Shape memory alloys (SMAs) use new insights in biomedical engineering with the unique properties they exhibit, in applications such as cardiovascular stents, guide wires and organ frame retractors. The biomedical field, forever in search of materials that display unconventional properties able to satisfy the severe specifications required by their implantation, is now showing great interest in shape memory materials. Biocompatibility, particularly for long-term and permanent applications, has not yet been fully recognized and is therefore the object of controversy. This paper a detailed reviews of applications of SMA to the biomedical field have been successful because of their functional qualities, enhancing both the possibility and the execution of less invasive surgeries and this paper will consider just why the main properties of shape memory alloys hold so many opportunities for medical devices and will review a selection of current applications