Patent ID: 9339334
Filing Date: 2016-05-17
CPC Classification: A61B

Claim Text:
1. An electrosurgical instrument in the form of a circular sealing instrument in RF design, comprising an instrument shaft comprising a proximal end and a distal end, a tool unit arranged on the distal end of the instrument shaft, said tool unit comprises an instrument shaft head in which a circular cutting blade is supported to be moveable in the axial direction of the instrument shaft which circular cutting blade is encompassed by at least one electrode being exposed at its distal end and said tool unit comprises an anvil being supported in said instrument shaft head to be axially moveable relative thereto, which anvil has at least one electrode located at -a rear face of the anvil facing the instrument shaft head which at least one electrode of the anvil is adapted to cooperate with the at least one electrode of the instrument shaft head, an actuation device for actuating the tool unit and arranged on the proximal end of the instrument shaft and a force transmission element which is arranged in the interior of the instrument shaft and provided for a force-fitting connection between the actuation device and the tool unit, said force transmission element comprises a hollow profile pull/push element being guided in the instrument shaft to operate the cutting blade, another pull/push element being guided in the hollow profile pull/push element to operate the anvil, wherein the hollow profile pull/push element is/has a bending flexible element/section made of plastic comprising a number of channels being at least one of radially closed and partly open extending in longitudinal direction and along the entire length of the bending flexible element/section said channels are adapted to receive electric wirings being connected to at least one electrode of at least one of the anvil and the instrument shaft head.