MeKo-Lab - Inspections & Equipment

Medical devices, and especially implants, require outstanding quality which can only be achieved by controlled processes and continuous inspections and measurements.

MeKo ensures a 100 % final visual inspection of all components for implants (stents, heart valves, clips, …) in order to ensure highest quality.

  • More than 50 stereo microscopes (Olympus, Zeiss, Leica, Vision Engineering)
  • More than 100 special high-end inspection microscopes
    • measurements with an accuracy of 1 µm
  • Stent scanners developed in-house
  • Automated measuring systems
  • Scanning Electron Microscopes SEM
  • EDS surface analysis
  • Special trained inspectors
  • Ergonomic work-places to improve inspectors' concentration
  • ...

MeKo Quality Inspection

Through the use of automatic microscopes hundreds of measurements can be taken on a single work piece.

The results of these measurements ensure our customers the highest level of measurement confidence possible.

BFR Test Diagram

The Bend and Free Recovery (BFR) method is applied for measuring the active Af temperature of NiTi devices.

  • Accurate method for all geometries → no limitations for sensitive parts.
  • Self developed in-house and optimized for accurate measurements.
  • Non-destructive method for verifying the real transformation behaviour.
  • Computer-assisted, fully automatic temperature cycling.
  • Printed graph including the Af temperature determined
  • Please see also DSC.
DSC Test Diagram

Utilizing DSC, MeKo determines the transformation temperatures (Af temperatures) of shape memory alloys like NiTi (Nitinol).

  • Precise measurement of the transformation temperatures by use of representative samples.
  • Results can be linked to BFR (Bend and Free Recovery) measurements.
  • A DSC graph - including the evaluation of the Af temperature of the heat treated parts will be sent along with the medical devices.
EDX Test Diagram

With our EDS System material compositions and surface contaminations are analysed.

EIS Test Diagram

The EIS is typically applied to measure the AC-current and AC potential.

In corrosion testing, EIS is standard practice for measuring the polarization resistance (Rp) of corroding systems.

Corrosion Tests

With potentiodynamic measurements the passivation and corrosion resistance of products are analysed in accordance with ASTM F2129.

Stent 316 LVM polished

Using Scanning Electron Microscopes (SEM), MeKo investigates devices with high resolution and a magnification up to 30,000x.

Tensile Test Chart

At MeKo, we know how to change the mechanical properties of implant materials by means of heat treatment.

To document the results, MeKo does not only check the time-temperature-curves of each heat treatment but also verifies the results by tensile tests.

Grain Size of Stent-Material

We take cross sections of devices in order to analyse grain structures, heat affected zones of laser welds, ...

Roughness Test Equipment

At MeKo we measure the surface roughness in accordance with DIN EN 4758.