Medical endoscope, cold light source system of medical endoscope and working method of cold light source system

Abstract

The invention provides a cold light source system of a medical endoscope. The cold light source system is provided with a power source input interface and comprises a high-power LED module, a cold light source control plate and a medical isolated power source, the high-power LED module comprises an LED light-emitting chip, a junction temperature measuring sensor for measuring junction temperature, and an illuminance measuring sensor for measuring illuminance, the cold light source control plate is electrically connected to the medical isolated power source and the high-power LED module, drives the high-power LED module to work, records and stores accumulated using time and illuminance of the LED light-emitting chip, calculating service life of the LED light-emitting chip according to the accumulated using time and / or the illuminance, and comparing with a preset value to determine whether prewarning is needed or not, and the medical isolated power source is electrically connected with the power source input interface, performs isolated voltage transformation on input current and provides a working power source to the high-power LED module and the cold light source control plate. By the cold light source system, probability of accident occurrence caused by service life of the LED light-emitting chip in the medical endoscope can be effectively lowered.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a medical endoscope with life warning, a cold light source system of the medical endoscope and a working method thereof. Background technique [0002] With the continuous advancement of high-brightness LED technology, the cold light source for endoscope with high-power LED light-emitting chip as the core in the field of medical endoscope light source has gradually begun to occupy the market dominated by tungsten-halogen lamps and xenon lamps. LED cold light source can effectively overcome the shortcomings of existing endoscopic light sources such as tungsten-halogen lamps and xenon lamps, and is favored by users for its many advantages such as high brightness, suitable color temperature, low heat generation, and long life. The theoretical life of LED cold light sources with mature technology can reach more than 50,000 hours. However, it is often easy to ignore the une...

AI Technical Summary

Problems solved by technology

However, the above two schemes are still in the relatively primary protection stage, because there are often many factors that cause LED failure or affect the life of LED light-emitting chips, including the production process of the chip itself and the application of the chip in the cold light source circuit. The circuit environment, the heat dissipation of the chip during work, etc. Therefore, when the LED light-emitting chip fails, it is usually not prevented by controlling the temperature.

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