1. A coupling for connecting a torsion bar supported in the tool bar or tool with a torque transmission circuit or drive, consisting of two axially inserted male and female connecting parts and located in the surgical handle, characterized in that the cross-sectional shape these two connecting parts approximately corresponds to a sheet of four-leaf clover, in each case having preferably a cross section of a dividing circumference in this case, the cross-sectional shape of the connecting parts is formed from lines of four equal circles that have a smaller radius and define four corners of the cross-sectional shape of the coupling, while the lines of each two adjacent circles are connected to each other by another circle line of a larger radius, the center of which is does not coincide with the centers of the lines of the angular circles - in each case it is located outside the cross-sectional shape. 2. The clutch according to claim 2, characterized in that the lateral circle lines connecting the lines of two adjacent lateral circles in each case form a concave cross-section contour that merges with the convex contour in the region of the angular circle lines, thereby approaching the shape of the clover leaf. 3 . The coupling according to claim 1, characterized in that the other center of the circle is located on the central axis between two adjacent intersecting circles (82) having a smaller radius, while the circle (84) having a larger radius (Ri) is described around the other center of the circle .four. The coupling according to claim 3, characterized in that each of the concave lines of the side circumference1. Муфта для соединения торсионного стержня, поддерживаемого в стержне инструмента или инструменте с цепью передачи крутящего момента или приводом, состоящая из двух вставляемых одна в другую в осевом направлении охватываемой и охватывающей соединительных деталей и расположенная в хирургической рукоятке, отличающаяся тем, что форма поперечного сечения указанны
