Novel semi-circle scalpel head tumor cutter

The utility model relates to the field of medical equipment, in particular to a novel semi-circle scalpel head tumor cutter which comprises an expanding device. The expanding device comprises two elastic force arms, a supporting plate is arranged on the end portion of each elastic force arm, a rotating shaft is arranged on a connecting part of the two elastic force arms, the rotating shaft is connected with the tail end of a supporting rod in a screwed mode, and the other end of the supporting rod is connected with a semi-circle scalpel head through a hinged shaft. The novel semi-circle scalpel head tumor cutter is reasonable in structural design, convenient to operate, tumor perienchyma is expanded by utilizing the external expansion property of the elastic force arms, an operation visual field is completely exposed, the positioning of the semi-circle scalpel head is accurate, incision is thorough, operation efficiency is improved, and working difficulty of medical staff is reduced.