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Related Experiment Videos

Stent optical inspection system calibration and performance.

Carlos Bermudez, Ferran Laguarta, Cristina Cadevall

    Applied Optics
    |April 5, 2017
    PubMed
    Summary
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    Single-shot optical surface profiling using extended depth of field 3D microscopy.

    Optics express·2022

    A new optical system inspects medical stents with high resolution and speed. This ensures no defective stents are implanted, improving patient safety through advanced imaging technology.

    Area of Science:

    • Medical device manufacturing
    • Optical metrology
    • Quality control systems

    Background:

    • Implantable medical devices require 100% inspection to prevent defects.
    • Current inspection methods may lack the necessary resolution or speed.
    • Ensuring stent integrity is critical for patient safety.

    Purpose of the Study:

    • To present a novel optical system for high-speed, high-resolution stent inspection.
    • To compare the proposed system with conventional microscopy techniques.
    • To detail the calibration and error analysis for critical dimension measurements.

    Main Methods:

    • Utilized a high numerical aperture microscope, triple illumination, rotational stage, and CMOS camera.
    • Employed a line-scan approach to capture unrolled stent surfaces.

    Related Experiment Videos

  • Developed a calibration process and investigated error sources for dimensional accuracy.

    • Main Results:

    • Achieved high-resolution imaging of both outer and inner stent surfaces.
    • Demonstrated high-speed data acquisition using a line-scan method.
    • Presented a comparative analysis against conventional microscope image formation.

    Conclusions:

    • The novel optical system enables efficient and accurate inspection of medical stents.
    • The system addresses the need for comprehensive quality control in medical device manufacturing.
    • Further analysis of error sources enhances the reliability of critical dimension measurements.