Medical Device Nitinol Assessment Guidance
FDA has published a draft guidance, Technical Considerations for Non-Clinical Assessment of Medical Devices Containing Nitinol, to give the agency’s current thinking on technical considerations specific to devices using nitinol, a commonly used material in the medical device industry. The document says that medical device manufacturers have used nitinol’s unique properties (pseudoelasticity and shape memory behavior) to design innovative medical devices that would not be possible with cononventional materials. It has been used extensively in cardiovascular devices such as stents, heart valves, guidewires, and vena cava filters. And, it says, use of nitinol in other device areas is growing, particularly for products intended for use in minimally invasive procedures.