The Problem: Poor Light Quality Compromises Visibility in the OR
Minimally invasive surgery (MIS) relies heavily on the quality of medical instruments such as light cables and endoscopes. For surgeons, clear visibility is critical – especially during complex procedures.
Damaged light cables and endoscopes can significantly reduce light transmission and contrast. Without objective quality testing in the Central Sterile Services Department (CSSD/ZSVA), devices with insufficient light quality can reach the OR daily – posing an unnoticed risk to patients.
Traditionally, light issues were often blamed on the light cables. Our experience shows that endoscopes frequently lose light transmission over time, which can affect both visibility and patient safety.
The Solution: Objective Light Transmission and Spectrum Measurements
The MedZense LG20-e is a universal solution for quick and objective testing of light cables and rigid endoscopes (diameters 2.7–10 mm).
- Measures light transmission across the entire visible light spectrum
- Supports all major connectors and cable types
- Ergonomic and easy to use
- Adjustable acceptance and rejection criteria
- Optional ENDOYE testing for video laparoscopes
- Integrated with the IQM platform for documentation and analysis
For flexible endoscopes, the MedZense LG20-Flex together with the MedZense PT11 provides the first objective, efficient way to test light transmission quality. Damaged fibers can be detected early, preventing costly damage and patient risk.

Production and Development at Entrhal Medica
The MedZense product line was originally acquired from the Netherlands. Since then, full production and further development – including IQM software and the LG20-Flex – have been carried out at Entrhal Medical. This ensures the devices are fully adapted to the needs of hospitals and continuously improved based on real-world feedback.
Extension: MedZense DMS – DataMatrix Scanner
To complement the LG20-e/f, we offer the MedZense DMS, a DataMatrix scanner for instrument identification and traceability.
- Fully compatible with the MedZense IQM platform
- Supports up to 2 test devices in parallel, additional devices on request
- Compact, splash-proof, and easy to clean
- Reads small, scratched DataMatrix codes on curved or reflective surfaces
- Plug & Play via USB, no extra software installation required
- Optimizes quality control, identification, and traceability of surgical instruments

Benefits for Hospitals and CSSD
- Objective quality assessment – quantitative measurements replace subjective judgment
- Improved visibility in the OR – higher light transmission and better contrast
- Enhanced patient safety – damaged instruments are detected early
- Cost efficiency – early repairs prevent expensive damage
- Flexible application – rigid and flexible endoscopes, all common diameters
- Workflow integration – IQM platform and DMS streamline quality assurance processes
Features & Innovations
- ENDOYE Testing: Optional for ENDOEYE video laparoscopes, tracks light loss over time
- IQM System: USB integration for instrument-level data analysis
- Digital color loss simulation: Visualizes the effect of damaged fibers on light output
- MedZense DMS: Reliable instrument identification and traceability
- Design & development at Entrhal Medical: robust, practical, continuously improved
Conclusion
Regular testing with the MedZense LG20-e/f and MedZense DMS prevents light cables and endoscopes with reduced light transmission from reaching the OR. The result: better visibility for surgeons, increased patient safety, fewer procedure delays, and lower repair costs.
Through local production, ongoing development, and smart digital integration, hospitals can reliably monitor the quality of their MIS instruments – a critical contribution to safety and efficiency in the operating room.
Contact for product inquiries & demos:
Tel.: +49 2834 94 24 80
Email: info@entrhal-medical.de