Shape memory alloy, also known as Nitinol alloy, is a very magical metal alloy with a special memory property of being able to remember its original shape and return to its original shape after deformation at a specific temperature (called the transition temperature). The special memory functionality of Nitinol memoy metal makes it an important component of many biomedical applications, mainly in the following areas with major breakthroughs:
1. One of the most important biomedical applications of Nitinol Shape Memory Alloy is minimally invasive surgery or intravascular treatment. Shape memory alloy wire or tube can be molded into a specific shape at room temperature and inserted into the patient's blood vessels or any other internal organs, allowing medical professionals to perform surgery or deliver drugs in a minimally invasive way. When medical devices made of SMA nitinol wire reach the required temperature, they return to their shape before deformation, thereby expanding and maintaining the shape required for surgery. This property allows for precise non-invasive surgery, reducing patient risk, discomfort and recovery time.
2. Another biomedical application of Nitinol Shape Memory metal is prosthetic implants. Because it has elasticity similar to human bones. This makes superelastic nitinol memory alloy ideal for manufacturing bone implants, which mimic the mechanical properties of bone and can deform in response to force and pressure. Using nitinol metal implants reduces implant rejection, speeds recovery, and improves patient function.
3. The unique properties of Shape memory alloy nitinol wire have also been applied to dentistry, where orthodontists use nitinol archwires to more effectively treat patients and reduce discomfort. Compared to traditional stainless steel archwires, these archwires apply more precise and constant pressure to the teeth, moving the teeth to the desired position faster and correcting the patient's malocclusion with less pain.
4. Nitinol technology has also revolutionized the design of stents used to treat coronary artery disease. Stents are tiny mesh tubes inserted into narrowed arteries to keep them open and improve blood flow. Shape memory nitinol stents have the ability to expand and contract in response to changes in arterial temperature and pressure, making them self-regulating and less likely to move, shift, or become blocked. This property improves the efficacy of the stent, reduces the risk of complications, reduces the need for repeat surgeries, and improves the overall quality of life for patients.
In summary, Shape Memory Alloy has enabled many breakthrough biomedical applications, significantly improving the efficacy of medical procedures, reducing risks and recovery time, and improving the quality of life for patients.
