Red and white light source switching control circuit of visual endoscope

Abstract

The invention discloses a red and white light source switching control circuit of a visual endoscope, which comprises a power supply, a signal switching control circuit, a power supply reversal control circuit and an illumination assembly. After the signal switching control circuit receives an input signal, the signal switching control circuit sends a level switching command to the power supply reversal control circuit; the reversal output circuit is provided with two power supply output driving interfaces which are a power supply output driving interface LED_P1 and a power supply output driving interface LED_P2 respectively; after the power supply reversal control circuit receives the level switching command, the power supply reversal output circuit turns over the positive polarity and the negative polarity of the output power supply; the illumination assembly comprises a light emitting diode LED1 and a light emitting diode LED2, wherein one of the light emitting diode LED1 and the light emitting diode LED2 is a red light emitting diode, and the other of the light emitting diode LED1 and the light emitting diode LED2 is a white light emitting diode. According to the red and whitelight source switching control circuit, the red and white light sources are arranged in the control circuit, so that the switching control of the red and white light sources can be achieved, namely the functional characteristics of the existing endoscope and the optical rod are combined, and the use requirement is well met.

Description

technical field [0001] The invention relates to a red and white light source switching control circuit of a visual endoscope, which belongs to the field of endoscope circuit structure design. Background technique [0002] At present, many hospitals have popularized the use of endoscopic equipment such as visual rigid endoscopes and flexible endoscopes for assisted tracheal intubation. The camera at the front end of the endoscope tube captures images of the inner wall of the human trachea and transmits them to the endoscope for display. The image is displayed on the LCD screen. The camera is light, slender, and flexible, with flexible followability and better insertability. It can get closer to the lesion when it enters the laryngeal cavity, and can clearly see subtle changes in the larynx and trachea, making diagnosis and treatment faster and more accurate. It is not easy to judge the depth of the trachea into the human body intuitively. Sometimes the image cannot be seen c...

AI Technical Summary

Problems solved by technology

The camera is light, slender, and flexible, with flexible followability and better insertability. It can get closer to the lesion when it enters the laryngeal cavity, and can clearly see subtle changes in the larynx and trachea, making diagnosis and treatment faster and more accurate. It is not easy to judge the depth of the trachea into the human body intuitively. Sometimes the image cannot be seen clearly when the intubation tube meets the spittoon or blood, so doctors sometimes use light sticks, which can emit red light, instead of hard tubes. The visual endoscope is used to guide positioning, because red light has a strong penetrating ability, and the position of the tracheal intubation is close to the chest cavity, so the red light can easily penetrate the chest cavity, but the disadvantage is that this kind of light stick has no visual function and can Positioning but can not see the internal image, the use effect is general

Images