In this paper, we will introduce a portable device which can help doctors and nurses visualize blood vessel maps of their patients. On basic of combining a vein infrared imaging method and a projector system, this vein instrument can be optimally designed for viewing veins in the monitor or displaying vessel maps of patients directly on their skin. | 91 TẠP CHÍ PHÁT TRIỂN KH&CN, TẬP 20, SỐ K2-2017 Design and enhance the vein recognition using near infrared light and projector Tran Van Tien, Dau Sy Hieu, Nguyen Tri Dan, Huynh Quoc Sang, Huynh Quang Linh* Abstract — The difficulty of intravenous access in patients is an important clinical issue. Recently, many studies and several devices have been developed to assist physicians, nurses and surgeons in finding veins. Amongst them, near infrared imaging technology is one of the new technologies being widely used in the biomedical. NIR imaging allows visualizing veins underneath the skin of those having non-visibility of veins problem, mapping the normal and abnormal veins in treating disorders, or diagnosing related diseases. In this paper, we will introduce a portable device which can help doctors and nurses visualize blood vessel maps of their patients. On basic of combining a vein infrared imaging method and a projector system, this vein instrument can be optimally designed for viewing veins in the monitor or displaying vessel maps of patients directly on their skin. Index Terms— vein viewer, near infrared, projector 1. INTRODUCTION Near infrared (NIR) imaging of vein has many applications in biomedical fields. Recently, many studies [1-5] and several devices [6-9] have been developed to assist physicians in finding veins. Especially, NIR light are non-ionizing radiation and non-invasive so it can be used for a long time without harm to patients. Near infrared imaging technologies display subcutaneous veins based on the principle of light propagation, absorption, refraction, reflection and scattering in the different layers of skin. When using near-infrared LED with wavelength of 850 nm to illuminate, this nearinfrared light infiltrates the skin and subcutaneous Manuscript Received on July 13th, 2016. Manuscript Revised December 06th, 2016. This work was supported by National Key Laboratory of Digital Control and System Engineering, and the department .
