抄録
In this study, an automatic blood vessel searching system (BVSS) is newly developed, which is built in the health monitoring system (HMS) and the drug delivery system (DDS) to evaluate the blood sugar level and inject the insulin for the diabetic patients. Main subjects of this BVSS development are 1) a transmittance photo imaging of the finger by using the LED light as a near-infrared light source with peak wavelength of 870nm, and 2) an image processing to detect the location of the center of blood vessel. To estimate the depth of blood vessel, the lens focal method was applied to the BVSS. To confirm the availability of the system, we used blood vessel phantoms that consist of a cylindrical blood vessel (metal rod) and skin tissue (silicone rubber), and confirmed the artificial blood vessel was 1.5mm in diameter. The phantoms were embedded in the skin under 1.7mm in depth. Estimated depths using our image processing show good agreements with the given depths.
