一种浅层静脉显像仪的设计与实现
Design and Implementation of an Instrument for Superficial Vein Imaging
摘要:
静脉注射时，婴幼儿与肥胖患者的表层静脉往往难以快速、准确地定位。本文针对此问题设计了一种简易的静脉显像仪，其使用光强可调节、波长为850 nm的透射光成像，采用6 mm焦距镜头、1/4" CMOS图像传感器、内置有850 nm窄带滤光片的摄像头采集图像，通过与2.4 G WiFi发射器连接，实现了无线视频传输，可在智能手机、平板电脑上实时、清晰地显示静脉图像。本静脉显像仪使用方便、成本低廉，可满足一般的浅层静脉注射需要，有利于在国内医疗机构推广。
Abstract:
The superficial veins of infants and obese patients are often difficult to locate quickly and accu-rately during intravenous injection. For this problem, we have designed a simple vein-imaging instrument, which uses 850 nm transmission light with adjustable intensity to image, adopts a camera with 6 mm focal-length lenses, 1/4" size CMOS sensor, and built-in 850 nm narrowband filter for image acquisition, and then realize wireless video transmission via connecting with a 2.4 G WiFi transmitter. Clear vein image could be real-time displayed on smartphone or tablet computer. The vein imaging instrument is easy-use, low-cost, and meet general needs of superficial intravenous injection, which benefits promoting in domestic medical institutions.
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