A jawed surgical instrument has a jawed part on the distal end formed with two jaw branches, at least being pivotally supported. A handle actuating the jawed part is on the proximal end. The instrument includes a blade assembly reversibly displaceable in the axial direction for cutting tissue between branches, and a shaft designed as a tube. The jawed part and blade assemblies are actuatable by elements passing through the shaft. The jaw actuating element is longitudinally displaceable, from the handle, in the direction of the shaft. The blade actuating element is longitudinally displaceable in the direction of the shaft by a throw lever system. The throw lever system includes an actuating element, a coupling member, and a throw lever. The blade actuating element is longitudinally displaceable within the shaft in the shaft direction by actuating the actuating element.
