In medical field analysis of single cellís properties is of great use. To analyze the properties of the single cell, a trapping structure is necessary. In This paper we propose different structures for trapping of cancer cells. The structure designed will be applicable to trap only cancer cells which have large size and also very hard unlike normal cells. So the normal cells passes through the region and cancer cells got struck there as more pressure will be there. Also we will find with which range velocity the blood should flow and what happens if the velocity exceeds the range.
laminar flow, trap, velocity, cancer cell, normal cell