Coronary　rotational　atherectomy　(CRA)　means　of　use　a　tiny　grinding　tool　to　rotate　at　high　speed　in　the　blood　vessels,　so　as　to　remove　calcified　tissue,　effectively　enlarge　the　inner　diameter　of　the　vessels,　which　is　an　important　tool　for　the　treatment　of　cardiovascular　calcified　blockage.　However,　excessive　grinding　force,　temperature　and　debris　size　can　lead　to　serious　surgical　complications　and　endanger　the　patient　life　during　CRA.　This　study　introduces　the　design,　fabrication　and　performance　verification　process　of　a　novel　grinding　tool,　and　investigates　the　influence　of　tool　geometrical　parameters　and　grinding　parameters　The　experimental　results　showed　that:　the　novel　grinding　tool　can　effectively　remove　the　simulated　calcified　tissue　by　grinding.　The　geometrical　size　of　tools　plays　an　important　effect　on　the　grinding　properties,　which　can　result　in　increasing　grinding　force,　temperature　and　debris　size　with　the　increase　of　tool　diameters.　In　addition,　with　the　increase　of　rotational　speed,　the　grinding　force　and　temperature　increase　gradually,　while　the　debris　size　decreases　as　the　rotational　speed　increases.　The　increasing　inner　diameter　of　bone　can　also　lead　to　a　decrease　in　grinding　force　and　temperature　slightly.　All　the　obtained　results　can　give　effective　guidance　for　clinical　operations.