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  • Surgical dilators designed for mechanically enlarging, frequently by augmenting the diameter (caliber) of heart passages, heart valves, coronary arteries, and/or heart-associated vascular structures during surgery. These surgical dilators consist of a variety of different instruments, typically including malleable shafts and oblique distal ends with specially designed opening blades to incise the heart or vessel at the selected site without damaging the opposite wall. Surgical cardiac dilators may also keep the edges of the incision apart without forceps or traction sutures as well as to expand the edges of an arterial incision. Surgical cardiac dilators are usually used during cardiac surgery (e.g., aortocoronary, peripheral vascular surgery, sequential anastomosis in coronary artery bypass). Some dedicated cardiac dilators are intended to dilate stenosed heart valves.
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