Multi-specimen Fatigue Life

High cycle fatigue/durabilty testing of multi-specimen components

For validation or proof of a stent medical device design, high component stress levels need to be evaluated in an R&D testing environment.  When a satisfactory design is achieved, the newly developed stent will then undergo a “test-to-success” procedure to assure that the stent meets the 400 million cycle test at the nominal physiological pressure or distention appropriate for the intended application.

Accelerated fatigue testing at high-frequencies brings products to market faster

To reduce time and costs for developing fatigue life (s/n) curves for NiTi, CoCr, and SS stent materials and structures, Bose has configured a series of multi-specimen test systems utilizing the versatility of the ElectroForce® 3200 and 3330 test instruments.   These uniaxial dynamic systems, configured with multi-specimen fixtures, employ dynamic linear motors that achieve high frequency load or displacement control to simulate stress levels of specific materials or specific geometries or design areas of the stent structure.

ElectroForce multi-specimen fatigue testing systems can be used for high cycle fatigue life characterization of coronary and vascular device structures, and evaluation of device materials for s/n curve development. In addition, the test systems can provide controlled loading for small soft structures and devices such as stents, stent segments, vena cava filters, septal closure structures and annuloplasty devices.

Key Testing Performance Benefits