Surgical instruments are tools used by medical professionals to perform various procedures. The LANCET is a sharp blade used to make incisions in the skin, while the TREPAN is a drill-like instrument used to cut through bone. The LASER is a device that emits a beam of light to cut or vaporize tissue. The PROBE is a thin, flexible tool used to explore cavities and canals. The trocar is a sharp, pointed instrument used to puncture body cavities. The retractor is a tool used to hold back tissue and organs during surgery. The curette is a spoon-shaped instrument used to scrape away tissue. The stylet and stilet are both slender rods used to guide catheters and other instruments. The xyster is a curved instrument used to scrape and remove bone. Finally, the SCALPEL is a small, sharp knife used to make incisions in the skin.