Coronary　rotational　atherectomy　(CRA)　is　a　minimally　invasive　interventional　procedure　used　to　remove　the　calcified　tissue　of　the　arterial　wall.　Intravascular　ultrasound　(IVUS)　can　be　used　as　an　adjunctive　imaging　modality　to　enhance　the　success　rate　of　the　procedure.　However,　for　severely　calcified　or　even　occluded　vessels,　traditional　side-viewing　intravascular　ultrasound　catheters　cannot　image　through.　This　paper　presents　a　visualized　rotational　atherectomy　device　based　on　forward-looking　IVUS.　An　ultrasound　imaging　platform　was　built　to　perform　tissue　sample　imaging　experiments.　Bovine　bone　was　employed　to　simulate　calcified　tissue,　and　a　vascular　tissue-mimicking　phantom　was　designed　and　fabricated　for　quantitative　analysis.　Depth　information　was　added　to　the　obtained　forward-looking　IVUS　images　to　annotate　the　distance　between　the　rotational　atherectomy　device　and　the　calcified　tissue　ahead.　The　experimental　results　show　that　the　visualized　rotational　atherectomy　device　can　obtain　intraluminal　information　of　the　vessel　ahead　of　the　grinding　tool,　which　helps　surgeons　set　reasonable　rotational　atherectomy　parameters　and　evaluate　the　results　of　the　previous　rotational　atherectomy,　thus　efficiently　removing　calcified　lesions　and　reducing　surgical　complications.　IEEE