Development of Biopsy Needle Design and Optimum System

A sharp edged biopsy needle is often used to cut and remove the expected tissue specimen to identify and diagnose cancer and other diseases. However, the traditional way to design and systematicness. The efficience of designing and optimizing of biopsy needle can be improved by selecting appropriate needle tip geometry. In this paper, a design and optimum system of biopsy needle is developde with the help of the secondary development of ABAQUS, by which the plane and cylindrical surface biopsy needle model can be automatically established through inputting the parameters of the needle tip. The plane surface biopsy needles were contrasted with cylindrical surface biopsy needles in rake and inclination angle by MATLAB. The results show that the cylindrical surface needle tip had a broader distribution in the rake and inclination angle than one-plane needle. Therefore, the cylindrical surface needle may be more conducive to the biopsy.