It is more than the size of the tool that matters.
Ian C
IC
Gilchrist
D015906:Angioplasty, Balloon, Coronary / Q000295:instrumentation*; D002406:Catheterization, Peripheral / Q000295:instrumentation*; D005260:Female; D005263:Femoral Artery; D006801:Humans; D008297:Male; D009339:Needles