A surgical instrument is provided having a tubular shaft with working elements arranged at its distal end, at least one of which may be spread apart. The working elements engage through an actuator element with a handle arranged at the proximal end of the shaft for opening and closing the working elements....http://www.google.fr/patents/US6436117?utm_source=gb-gplus-shareBrevet US6436117 - Surgical instrument with a continuous hollow channel for a further instrument
Surgical instrument with a continuous hollow channel for a further instrument
