SURGICAL RETRACTOR WITH REMOVABLE ACTUATING ELEMENT

摘要

An HF surgical instrument includes two instrument branches movable toward each other into a closing position. Each branch is equipped with at least one electrode and can be supplied with electric power from a power source. The HF instrument includes a separately configured bridge which is connectable to the power source via at least one electric connection or at least one electric line and includes at least one electrically conductive contact point for supplying the at least one electrode with electric power. The bridge can be introduced to at least one of the two branches so that the at least one contact point is electrically contacted by the at least one electrode. A method of assembling a HF surgical instrument includes equipping two instrument branches with at least one electrode.

主权项

1. A retractor comprising:
at least two retractor arms whose proximal end portions are fixed or integrally formed on the opposite ends of a longitudinally adjustable crossbar for adjusting the transverse distance between the retractor arms, and a drive gear unit whose case is mounted on the crossbar and whose gearing is in operative connection with a length adjustment mechanism of the crossbar preferably in form of a gear rack in order to be manually operated by means of a separate actuation element of the retractor which can be brought into engagement with a gearing input element which is movably inserted in the case, and to this end is accessible from outside on at least one outer side of the casing, the gearing input element being substantially flush with said case's outer side or is recessed into the case interior with respect to said case's outer side, and the gearing input element, which is rotatably held in the gearing case, comprising at least one recess at its face exposed towards outside, said recess being adapted to work as a force/torque introduction member, acting in a form-locking manner, for the actuation element comprising at least one protrusion, wherein at least one recess on the side of the drive gear unit is formed with an axially acting undercut and at least one protrusion on the side of the actuation element is formed with an axially acting detent edge such that the detent edge engages the undercut upon inserting the at least one protrusion into the at least one recess and in this way prevents/impedes the protrusion from being unintentionally pulled out of the recess.