Patent ID: 8926608
Filing Date: 2015-01-06
Classification: A61B

Abstract:
1. A bipolar medical instrument comprising a tubular shaft, further comprising two jaw parts which are arranged such that they can move relative to one another at a distal end of said tubular shaft, with said jaw parts each forming an electrode, to which high frequency current can be applied, of different polarity, wherein each jaw part has an associated separate electrical power supply line, one power supply line supplies current via an electrically conductive tubular shaft to one jaw part, wherein said electrically conductive tubular shaft itself conducts current, and another power supply line supplies current via an axially moving electrically conductive force transmission element to another of the two jaw parts, wherein said electrically conductive force transmission element itself conducts current, said force transmission element being connected to at least one jaw part in a manner that force can be transmitted to said at least one jaw part, and wherein the jaw parts are electrically isolated from one another, and wherein a distal end area of the force transmission element is surrounded by a cap-like or sleeve-like isolating element which is made from an electrically insulating material and which is mounted on the force transmission element, and wherein said isolating element is connected to at least one jaw part in an articulated manner, and wherein an electrically conductive first contact member is provided, by means of which a current flow can be provided from said tubular shaft to one of said jaw parts, and wherein said first contact member is fixed to said isolating element.