Chisel device and wear-protected chisel for ground milling machines

A chisel device for a ground milling machine, comprising:

• a chisel holder having a mounting orifice;
• and
• a milling chisel having a basic body of a uniform material and including a shaft and a tool region (P), which shaft is under working conditions held in said mounting orifice while said tool region (P) protrudes under working conditions from said chisel holder,
• wherein said milling chisel has a wear protection cap comprising carbide, said wear protection cap comprising a single piece and having a tip forming a foremost point of said milling chisel and a protective jacket, said wear protection cap being formed in such a manner that said wear protection cap covers at least 70% of the external surface of said tool region (P) of said basic body,
• wherein said wear protection cap has a profile on its outer surface comprising a plurality of slots which extend in an at least partially spiral pattern from said tip of said wear protection cap to a peripheral region of said protective jacket facing away from said tip, each of said plurality of slots extending entirely through a thickness of said wear protection cap, and
• wherein an elevated region is arranged in direct adjacency of each of said slots.