Near-infrared self-registration venous imaging device and method

Abstract

The invention relates to a near-infrared self-registration venous imaging device and method. The method comprises the following steps: acquiring the image of skin illuminated by visible light or near-infrared light through a camera; controlling to enter a light mode of a lens of the camera by a near-infrared filter plate-visible light filter plate switching device, switching a visible light filterplate or a near-infrared filter plate according to tough signals; emitting near-infrared light to the skin from a near-infrared light source; acquiring video images captured by the camera by a micro-controller, and outputting triggering signals of the near-infrared filter plate-visible light filter plate switching device; carrying out enhancement, filtering and segmentation processing on the video images by a parallel processor, and transmitting the video images to the projector; and emitting out visible light by the projector, and projecting to the surface of the skin. The two filter platescan be switched by IR-CUT, a vein image or projection image of a shot part of a human body can be acquired independently, feature point matching is carried out by the microcontroller, and the vein image is subjected to rotating and translating operation, so that the projection image is registered with the vein image. The near-infrared self-registration venous imaging device and method are harmlessto people and are safe and environmentally friendly.

Description

technical field [0001] The invention relates to a medical device manufacturing technology, in particular to a near-infrared self-registration vein imaging device and method. Background technique [0002] Since near-infrared light (with a wavelength of 700nm-900nm) penetrates deeper into human tissue than visible light, and the absorption of near-infrared light energy by deoxygenated hemoglobin in venous blood is significantly higher than that of perivascular tissues such as fat and melanin, therefore, near-infrared light is used The imaging method can significantly improve the contrast between venous blood vessels and surrounding tissues, and obtain relatively clear images of venous structures. [0003] At present, the vein visualization and imaging equipment developed by using this principle has been gradually applied in clinical medicine. For example, the Christie Vein Viewer developed by CHRISTIE can detect the position of blood vessels and project them onto the surface ...

AI Technical Summary

Problems solved by technology

[0008] Aiming at the disadvantages in the prior art that the vein imaging device adopts an independent optical path so that its size and volume cannot be reduced and the imaging effect is not ideal, the problem to be solved by the present i

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