Scanning synchronous imaging and indicating device and method for venous vessels

Abstract

The invention belongs to the technical field of optical technologies and medical optical images, particularly relates to a scanning synchronous imaging and indicating device and method for venous vessels and aims to receive a scanning imaging signal by using a linear array photoelectric sensing element, simulate or digitalize a photoelectric signal and form indicating vessels by using a visible light LED array in a discrete light spot form, and image processing with a large data volume and image calibration are eliminated. The technical scheme adopted by the invention is that the scanning synchronous imaging and indicating device comprises a near-infrared LED light source for illuminating the vessels and an imaging lens, wherein a scanning galvanometer is arranged between the imaging lens and an imaging plane thereof; the linear array photoelectric sensing element capable of sensing near-infrared light is arranged on the image plane reflected by the scanning galvanometer; a near-infrared interference filter is arranged between the imaging plane where the linear array photoelectric sensing element is positioned and an optical axis of reflecting light of the scanning galvanometer; the near-infrared interference filter is parallel to a mirror surface of the scanning galvanometer during immobility; the visible light LED array is connected to a driving end of a signal processing and driving circuit; a projection lens is arranged between the visible light LED array and the near-infrared interference filter.

Description

technical field [0001] The invention belongs to the field of optical technology and medical optical imaging technology, and in particular relates to a scanning vein and blood vessel synchronous imaging and indicating device and method. Background technique [0002] In clinical medicine, venipuncture is one of the main technical operations for treating and rescuing patients. Since the age, sex, fat and thinness of the patients are different, the thickness, depth, softness, hardness, and curvature of the blood vessels also have their own characteristics, and the difficulty of puncturing should vary from person to person. In recent years, the number of obese patients has been increasing with the improvement of people's living standards. Obese patients and infant patients are difficult to find blood vessels during venipuncture due to thick fat, small blood vessels, and pigmentation. problem. In the future, the premise of seeking automatic venipuncture by machine in a sterile e...

AI Technical Summary

Problems solved by technology

[0006] The problems in these technologies are: one is to filter the obtained image to eliminate the influence of optical or electrical noise on the blood vessel image; the other is to enhance the image to obtain a clear blood vessel image, which is convenient for the blood vessel projection display of the projector The third is to calibrate the projection image so that it can be accurately projected to the original position of the blood vessel to guide the medical staff to perform accurate blood vessel positioning and venipuncture; the fourth is that expensive projectors and infrared cameras or video cameras are required for specific implementation , and computers (or embedded systems), which are expensive, bulky, and require specialized image processing software

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