Application of the Endoscopic Micro-Inspection Tool QEVO® in the Surgical Treatment of Anterior Circulation Aneurysms—A Technical Note and Case Series

Abstract

Introduction: The application of neuro-endoscopes in cerebral aneurysm surgery may help to avoid unintended aneurysm remnants and the accidental clipping of perforating arteries and aid the detection of blood collecting in the subdural spaces. Here, we present our experience with the novel endoscopic micro-inspection tool QEVO® (Carl Zeiss Meditec, Germany) in aneurysm surgery.Materials and Equipment: In all patients the surgical microscope KINEVO® (Carl Zeiss Meditec, Germany) and the Microinspection tool QEVO® were applied.Methods: The case series comprises 22 unruptured cerebral aneurysms of the anterior circulation. All aneurysms were treated surgically. All patients routinely underwent computed tomography and digital subtraction angiography within 10 days after surgery.Results: No aneurysm remnants, cerebral ischemic deficits, or subdural hematomas were detected.Discussion: In this technical note, we discuss the benefits and limitations of the QEVO® tool and illustrate the major paradigms by means of intraoperative photographs.

Endoscopic Assistance in the Deep and Narrow Spaces of the Brain—Microscopic Tumor Surgery Supported by the New Micro-Inspection Tool QEVO® (Technical Note)

“…Over the past few years, surgical endoscopes have undergone consistent technical refinement, especially with regard to easier handling and improved image transmission in terms of full-HD and three-dimensional visualization. These technical innovations have largely increased the number of scientific reports on the use of endoscopes in vascular and oncologic neurosurgery of the brain and spine ( 4 , 8 , 14 – 18 ).…”

“…One of the most innovative handheld surgical endoscopes is the micro-inspection tool QEVO® that has been recently evaluated as a highly useful device in aneurysm microsurgery ( 18 ). This tool, measuring 12 cm in length and weighing 250 g, is equipped with an internal light source and has a fixed angle of 45°.…”