Abstract: A partial aiming device for targeting an arthroscopic operation site for a medical intervention has a circularly arcuate element and with a first, radially extending aiming rod which can be moved along the circularly arcuate element. It is proposed that on the circularly arcuate element there is a connecting device by means of which a medical instrument with a shaft can be connected to the partial aiming device in such a way that the shaft is orientated as a second aiming rod that extends radially towards the first aiming rod.

Abstract: A load-adaptive component includes at least one trapezoidal, elastically movable four-bar hinge incorporated integrally into the component to generate a shape change behavior that is anisotropically resilient-elastic and is directed counter to the direction of action of a force. The four-bar hinges have first recesses for forming hinge points that are produced by weak points in the material and embody elastic bending hinge, and second slot-like recesses connected to or joining the hinge points. A plurality of successive, mutually spaced four-bar hinges form a multi-hinge mechanism integrated into the component.

Abstract: A partial aiming device for targeting an arthroscopic operation site for a medical intervention, with a circularly arcuate element and with a first, radially extending aiming rod which can be moved along the circularly arcuate element. It is proposed that on the circularly arcuate element there is a connecting device by means of which a medical instrument with a shaft can be connected to the partial aiming device in such a way that the shaft is orientated as a second aiming rod that extends radially towards the first aiming rod.