The Investigation And Design For Enhanced Visualization System Of Subcutaneous Vein Based On Zynq Heterogeneous SoC

Subcutaneous vein cannulation has been an important technique during the modern medical process, no matter in diagnosis or therapy. However, the operator should look for and locate the target subcutaneous vein of the object with naked eye in traditional cannulation procedure. Therefore, this procedure may depend on the experience of the operator, the surrounding environment or the characteristics of the object and so on. The operator may have challenge to look for and locate the target subcutaneous vein of the object with naked eye when meets obese, dark skin or skin swelling objects, result in difficult to implement the procedure.Against the problem encountered in the subcutaneous vein cannulation procedure described above, as the science and technology development, the enhanced visualization system of subcutaneous vein has come up. This system assists the operator to look for and locate the target subcutaneous vein of the object through enhancing the contrast between the subcutaneous veins and surrounding tissue. This helps the operator locates the target subcutaneous vein of the object accurately, thus decreasing the difficulty and risk of the procedure.This article studies and classifies several existing types of systems and analyses their working principles, imaging characteristics, system structures and some other fields. Comparing and summarizing the analysis results, this article presents a system structure for subcutaneous vein enhanced visualization based on Zynq heterogeneous system on chip(So C). Zynq is an all programmable So C platform introduced by Xilinx Company. This platform integrates a processing system(PS) core and a programmable logic(PL) core in a single chip. The PS core can perform high speed operation performance which aims at program processing and the PL core can provide flexible controlling and processing ability which based on hardware description language(HDL) code. The PS core and PL core are interconnected by advanced extensible interface(AXI) bus which has a very high data transmission bandwidth. Therefore, the presented subcutaneous vein enhanced visualization system structure based on Zynq heterogeneous So C platform has several features such as high operation performance, flexible controlling ability, small system size and so on.This article also implements the system according to the design scheme presented here and verifies its function. The verification result shows that this system satisfies the requirements of the design scheme and achieves the subcutaneous vein enhanced visualization function with features of high operation performance, flexible controlling ability and small system size. This system can give assist to subcutaneous vein cannulation procedure, improving the success rate of it. And it will play a positive role no matter in personal health care and family happiness or in keeping social development stable.