A pair of clamps for a safe removing and repositioning of beta and gamma angular settings of Brown-Roberts-Wells stereotactic system during operation

The Brown-Roberts-Wells are system is a non-target-centered design, i.e., w ithout an independent approach angle. The approach angle of this system str ictly depends on precalculated values (entry and target point). Therefore, some components of the system used sometimes prevent a direct insight into the operation field. Once the entry point has been set, the are system norm ally has to be taken off to permit an unimpeded approach to the burr here. To facilitate rotation and return to the primary beta and gamma angular set tings during stereotactic craniotomy and other surgery, a pair of clamps wa s designed for the BRW are system. These clamps help the approach to the en try point in such a way that some components of the are (e.g., the guide bl ock holder) are removed from the surgical field, thus giving wide visual ac cess for the stereotactic approach. Consequently, it is no longer necessary to remove the entire are system, resulting in an increased operation safet y and shorter operation times.