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Minimally invasive surgery offers the benefits of reduced patient trauma, faster recovery and shorter hospital stay to the patients, what motivates its development towards further less invasive applications. In this work, we present a concept for adapting our 3D-printed overtube manipulator to single incision laparoscopic surgery. Furthermore, we describe the integration of a surgeon supporting ultrasound...
This article describes a planning program and process for the implant size and position planning for the minimally-invasive closure of the left atrial appendage. To prevent strokes in patients suffering from atrial fibrillation an implant that occludes the orifice of the left atrial appendage can be inserted into the heart through a catheter. A critical step during the procedure is the correct choice...
The catheter based minimally-invasive closure of the left atrial appendage for stroke prevention can be realized by placing foldable structures in the heart with the help of a catheter. As a platform for the development and the evaluation of new devices, a phantom was developed that allows to perform the intervention under realistic imaging conditions. The centerpiece of the phantom is an anatomical...
In Germany there are over 20,000 incidences of renal cell carcinomas per year. Laparoscopic resections of these tumors became more and more popular over the last years. Intraoperative imaging during these interventions is performed by video laparoscopes, allowing only for superficial imaging. Therefore, the surgeon has no intraoperative information of the layout of the tumor in the organ. To overcome...
During the last few years, regional anesthesia using ultrasound imaging has increased dramatically in both clinical and research areas. This method provides a direct noninvasive imaging of the targeted nerve and the tissue around it in real time. Furthermore, it allows anesthetists to observe the injected anesthetics for optimal distribution. However, there are still some major limitations to this...
Laparoscopic partial nephrectomy has become more and more popular in the last decade. Video laparoscopes remain the gold standard of intraoperative imaging during laparoscopic interventions. However, providing only superficial images of the target tissue. In contrast, ultrasound (US) imaging may offer crucial information of the interior of the target tissue that could improve surgical outcome. In...
Ultrasonography is a widespread intraoperative imaging modality. However, it suffers from several shortcomings e.g. its dependance on the skills of the operator for the image quality. To overcome this shortcoming, Gumprecht et al. [1] recently proposed a new robot-assisted flat-panel ultrasound device for continuous intraoperative imaging during laparoscopic tumor resection in urology. This device...
A formerly developed ultrasound liver phantom for testing of surgical navigation systems and liver resection trainings was evaluated experimentally. The phantom was scanned with CT and the dataset was analyzed with existing segmentation techniques. A virtual 3D model was generated on the basis of the segmentation; it was later used for phantom registration in a surgical assistance navigation system...
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