Patent ID: 9510738
Filing Date: 2016-12-06
CPC Classification: A61B

Claim Text:
1. An instrument system, comprising: an endoscopic instrument comprising a work head attached to one end of a flexible support arm to be introduced into a patient; and a trocar to be placed in a surface of the patient's body comprising: wherein the cables are actuated to locate the trocar to a work position, wherein the cables are shortened differently with respect to each other when the cables are actuated, wherein a distance between the main body and an exit end of the guide body and the spatial guidance direction of the support arm are changed in relation to a basic position of the trocar when the cables are actuated, wherein the spring element is relaxed when the trocar is in the basic position, wherein the cables apply a force against the spring element when the cables are actuated, wherein the spring element is deformed when the trocar is held in the work position by applying a force against the spring element via the cables, wherein the trocar moves back from the work position to the basic position by relieving the force against the spring element via the cables, and wherein the spring element is located around the cables.