Coronary　artery　atherosclerosis　is　a　prevalent　cardiovascular　disease　and　a　leading　cause　of　major　adverse　cardiovascular　events　(MACE).　Rotational　atherectomy　(RA)　is　an　effective　interventional　technique　for　treating　severe　calcified　stenosis.　However,　excessive　forces,　heat,　and　debris　are　prone　to　lead　to　serious　surgical　complications,　such　as　slow　flow/no-reflow　and　blood　clots.　To　mitigate　excessive　force　and　heat　generation　during　RA,　a　novel　high-performance　cutting　tool　was　designed　and　fabricated　for　coronary　artery　calcified　tissue　removal.　An　RA　simulation　model　was　developed　to　simulate　the　procedure.　The　results　showed　that　the　forces,　temperatures,　and　debris　size　remained　within　predefined　safety　thresholds.　Using　the　1.5　mm　tool　as　an　illustration,　the　peak　cutting　force　was　1.062　N,　and　the　peak　temperature　rise　reached　1.170　degrees　C.　Debris　distribution　exhibited　a　normal　pattern,　with　90%　of　particles　measuring　below　14　mu　m.　The　experimental　results　closely　matched　the　simulation　values,　showcasing　errors　under　10%　and　affirming　the　simulation　model＇s　precision.　This　research　provides　theoretical　support　for　the　study　of　mechanisms　and　contributes　to　optimizing　the　effectiveness　of　RA.