Patent ID: 7220242
Filing Date: 2007-05-22
Classification: A61M

Abstract:
1. A withdrawal device for the secure withdrawal of a flexible puncture needle from a catheter, in particular from a catheter with a flexible catheter tube following the puncture, the withdrawal device comprising a connection section for connecting the withdrawal device with the catheter in a starting position of use, and a return-motion lever linearly movable in a guide element, wherein a linear toothing is affixed to one of the guide element and the return-motion lever, wherein the linear toothing meshes with a peripheral toothing of a pivoted gearwheel on another of the return-motion lever, and the guide element, and wherein the puncture needle is attached with the end protruding from the catheter such that upon rotation of the gearwheel, the flexible puncture needle is wound up on a takeup part fixedly attached to the gearwheel.