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Home » Testing Solutions » By Test Type » High-Cycle Fatigue » Stent Materials

Fatigue Testing Stent Materials and Structures

Materials

  • Biomedical
  • Components
  • Biomaterials

Business Sector

  • Academic
  • Biomedical/Medical/Healthcare

Test Types

  • High Cycle Fatigue

Specimen

  • vezeték
  • Implant

Standard

  • ASTM F2477
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Traditional testing of stent and stent grafts (to standards such as ASTM F2477) involves subjecting complete devices to pressure pulsation simulating blood flow for a pre-specified number of cycles. Even if the device has not fractured, a simple pass/fail criterion is used for the test to succeed. Industry work is being undertaken to attempt to develop improved in vitro methods for characterizing and evaluating cardiovascular implant devices to provide more information about when and under what conditions fracture will take place.

To enable a representative sample of specimens to be evaluated and to reduce overall test time, multiple samples must be tested on a single system.

The multi-specimen fixture for the ElectroPuls™ E3000 All-Electric Test Instrument was developed to assist cardiovascular implant manufacturers to assess this long-term fatigue characteristics of nickel-titanium (Nitinol) and stainless-steel stent materials and structures.

Each specimen station features a fatigue-rated load cell, precision alignment adjustment and grips that are unique to the material or structure undergoing test. The entire station assembly is submerged into a temperature controlled bath to test the specimens in vitro. The test is controlled by WaveMatrix™ Dynamic Test Software that includes a number of features designed to assist users in running the test. These include integrated temperature control of the fluid bath, a live display of each load cell reading, and trend monitoring of forces to determine each specimen fracture.

ElectroPuls™ E3000 All-Electric Dynamic Test Instrument

The ElectroPulsTM E3000 is a state-of-the-art, all-electric test instrument designed for dynamic and static testing on a wide range of materials and components. It includes Instron® advanced digital control electronics, DynacellTM load cell, Console software, and the very latest in testing technology–hassle-free tuning based on specimen stiffness, electrically operated crosshead lifts, a T-slot table for flexible test set ups and a host of other user-orientated features. Powered from a single-phase supply it requires no additional utilities for basic machine operation (for example, pneumatic air, hydraulics, or water).

  • Products
  • 3/3/2017
  • 0.7 MB

ElectroPuls™ Electrodynamic Test Instruments

ElectroPuls instruments are state-of-the-art electrodynamic test systems for dynamic and static tests on materials & components. Powered entirely from a single-phase mains supply, they feature the latest in testing technology and a host of other user-oriented features.

  • Products
  • 4/24/2013
  • 1.7 MB

WaveMatrix™ Brochure

WaveMatrix™ is intelligent software designed for fatigue and dynamic testing of materials and components. It delivers flexibility - run everything from a simple static ramp, to cyclic waveforms through to complex multi-step, multi-axial tests The highly visual environment with integrated tabular screens, clear menu structures, time-based matrix test preview and configurable live test workspace is designed to be intuitive and instill confidence. Packed with intelligent features, such as data reduction and built-in project organization, designed to simplify your testing.

  • Products
  • 2/2/2011
  • 1.0 MB

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