Surgical basket instruments according to the invention generally include a sheath (catheter), a shaft extending through and axially movable relative to the sheath, a basket assembly coupled to a distal end of the shaft, and a handle coupled to a proximal end of the shaft and adapted for facilitating...http://www.google.co.uk/patents/US6264664?utm_source=gb-gplus-sharePatent US6264664 - Surgical basket devices
