Pharmaceutical & medical
The “light transmission” through the lenses is determined on the basis of individual images from the integrated IDS camera. For this purpose, the measuring device uses a calibrated light source that falls on a pixel plane. Each pixel is assigned a specific RGB value of a colour spectrum. The combination of all pixels is converted into a luminance value and referenced with the help of a specially developed algorithm.
The “focus measurement” uses the scientific Harr wavelet transformation to check whether the lenses are intact and not contaminated or whether the endoscope provides a clear image. During the measurement, the system takes several pictures to get an idea of the condition of each lens. In the optimal case, the camera looks through the endoscope and shows sharp contours.
“Colour Correction” is performed to detect discolouration due to the sterilisation process. The system warns against misinterpretation of images due to colour deviations. The unit takes images and measures deviations in colour transmission using the HSV model, which describes the colour of a pixel based on the three values Hue (hue), Saturation (saturation) and Value (brightness). Colour Correctness ensures that the actual colours of organs or tissues are reproduced to avoid incorrect diagnosis or treatment.
“With the help of the test and measurement details, information about the performance of the tested endoscopes can be evaluated and history and trend analyses can be created,”
Instrumentation Monthly June 2023
explains de Wit. “LightControl stores all details of the endoscope measurements, together with the test results, in a database called EndoscopeManager for reporting and management purposes, enabling dedicated management and quality reporting.”
HANDLING ON THE EXAMPLE OF THE SCOPECONTROL PRODUCT According to de Wit, the customer benefits are obvious. “The automated visual inspection of endoscopes serves quality assurance, efficiency, cost-effectiveness and patient safety in hospitals and medical practices. Systems like LightControl make a significant contribution to this by providing objective results and detecting even the smallest defects, scratches or wear on endoscopes. Moreover, they always work with the same accuracy and consistency, regardless of factors such as fatigue or human error, and are much faster. This saves time and costs, leads to higher equipment availability and improved resource
utilisation. Potential defects or damage are detected at an early stage, which can avoid costly repairs or replacement of endoscopes. The resulting images or videos are available as proof of inspection and can be used for fault analysis and training purposes if required.”
OUTLOOK
“Endoscopes are vital medical devices that enable doctors to diagnose and treat a variety of conditions by providing a clear, internal view of a patient’s body. However, like any medical device, endoscopes are subject to wear and tear, and over time they may need to be repaired or replaced,” says de Wit. Already now, the demand for automated intelligent visual inspection of endoscopes is high and is expected to increase further in the coming years. In particular, due to the increasing number of endoscopy procedures and the growing sensitivity to infection risks, the demand for automated inspection technologies will become stronger. In addition, artificial intelligence will help improve the efficiency and accuracy of inspection processes and minimise human error. The needs of the health sector are evolving as fast as the technologies used in this field. The use of IDS cameras is increasingly proving its worth here. “In medical technology, the demand for our products has increased particularly in the past year, which pleases us not only from an economic point of view,” explains IDS managing director Jan Hartmann. More and more IDS cameras are thus making a contribution to health promotion worldwide.
IDS Imaging Development Systems
en.ids-imaging.com
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