What is the expected life span of vascular stents?
For example: Universal (coronary/venous) stent WALLSTENT-UNI Boston Scientific, metal: nitinol = titanium + nickel.
How many pulsating contractions can it withstand? Is it more than
80 heart_rate * 60 min * 24 hours * 365 days * 10 years ~= 400 millions pulsations?
In vein (for extravasal compression - aortovenous conflict - arterial pulsation affects stent in vein)
How many years can (the non-grown into a vessel) areas of the stent be in the patient’s blood flow until these stent areas are destroyed?
Are there any data, whether from the manufacturer or obtained statistically about stent life span?