US Patent 10470502 Surgical helmet

A protection device (1) shaped like a helmet, apt to be worn on by a health operator during surgery, comprising: —a main body (2) shaped as a helmet shielding the operator's head, which main body (2) is worn on jointly to a lens (200); and—means (3) for forced circulation of air in an internal environment (20) accommodating the operator's head and defined by said main body (2) and by the associated vision element (200), which forced circulation means (3) comprises air inletting means (31) and air suction means (32), the latter apt to cause an evacuation of exhausted air from the environment (20) accommodating the subject's head.