Jindal saw blade swings at high speed, only cutting bones, wood and other inelastic materials, and has no cutting effect on elastic tissues such as skin and muscles. This product is used to cut the skull of a corpse for craniotomy. Cannot be used for live craniotomy. When cutting bones, the saw blade swings at high speed, and bone debris and body fluids will splash to the sides and below. A semicircular sheath is installed above the saw blade, and the sheath is connected with the vacuum cleaner. Splashed debris and body fluids are sucked into the transparent plastic collection box of the vacuum cleaner, and the work site can be kept tidy. After cutting, remove the collection box, put the debris and body fluids into the garbage bag, and clean the collection box with water.