Browsing by Subject "Surgery"

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  • Additive manufacturing of patient-specific tubular continuum manipulators 
    Amanov, E.; Nguyen, T.-D.; Burgner-Kahrs, Jessica (Bellingham, WA : S P I E - International Society for Optical Engineering, 2015)
    Tubular continuum robots, which are composed of multiple concentric, precurved, elastic tubes, provide more dexterity than traditional surgical instruments at the same diameter. The tubes can be precurved such that the ...
  • Can coffee improve image guidance? 
    Wirz, Raul; Lathrop, Ray A.; Godage, Isuru S.; Burgner-Kahrs, Jessica; Russell, Paul T.; Webster, Robert J. (Bellingham, WA : S P I E - International Society for Optical Engineering, 2015)
    Anecdotally, surgeons sometimes observe large errors when using image guidance in endonasal surgery. We hypothesize that one contributing factor is the possibility that operating room personnel might accidentally bump the ...
  • Comparison of tablet-based strategies for incision planning in laser microsurgery 
    Schoob, Andreas; Lekon, Stefan; Kundrat, Dennis; Kahrs, Lüder Alexander; Mattos, Leonardo S.; Ortmaier, Tobias (Bellingham, Wash. : SPIE, 2015)
    Recent research has revealed that incision planning in laser surgery deploying stylus and tablet outperforms stateof-the-art micro-manipulator-based laser control. Providing more detailed quantitation regarding that approach, ...
  • Effects of cavitation bubble interaction with temporally separated fs-laser pulses 
    Tinne, Nadine; Knoop, Gesche; Kallweit, Nicole; Veith, Sonja; Bleeker, Sebastian; Lubatschowski, Holger; Krüger, Alexander; Ripken, Tammo (Bellingham, WA : SPIE - International Society for Optical Engineering, 2014)
    We present a time-resolved photographic analysis of the pulse-to-pulse interaction. In particular, we studied the influence of the cavitation bubble induced by a fs-pulse on the optical focusing of the consecutive pulse ...
  • Evaluation of input devices for teleoperation of concentric tube continuum robots for surgical tasks 
    Fellmann, Carolin; Kashi, Daryoush; Burgner-Kahrs, Jessica (Bellingham, Wash. : SPIE, 2015)
    For those minimally invasive surgery where conventional surgical instruments cannot reach the surgical site due to their straight structure and rigidity, concentric tube continuum robots are a promising technology because ...
  • Evaluation of the soft tissue biocompatibility of MgCa0.8 and surgical steel 316L in vivo: A comparative study in rabbits 
    Erdmann, Nina; Bondarenko, Alexandr; Hewicker-Trautwein, Marion; Angrisani, Nina; Reifenrath, Janin; Lucas, Arne; Meyer-Lindenberg, Andrea (London : BioMed Central Ltd., 2010)
    Background: Recent studies have shown the potential suitability of magnesium alloys as biodegradable implants. The aim of the present study was to compare the soft tissue biocompatibility of MgCa0.8 and commonly used ...
  • Impact of intraprosthetic drilling on the strength of the femoral stem in periprosthetic fractures: A finite element investigation 
    Brand, Stephan; Bauer, Michael; Petri, Maximilian; Schrader, Julian; Maier, Hans Jürgen; Krettek, Christian; Hassel, Thomas (London : SAGE Publications Ltd., 2016)
    Treatment of periprosthetic femur fractures after total hip arthroplasty remains a major challenge in orthopedic surgery. Recently, a novel surgical technique using intraprosthetic screw fixation has been suggested. The ...
  • Magnesium Alloys for Open-Pored Bioresorbable Implants 
    Maier, Hans Jürgen; Julmi, Stefan; Behrens, Sabine; Klose, Christian; Gartzke, Ann-Kathrin; Wriggers, Peter; Waselau, Anja-Christina; Meyer-Lindenberg, Andrea (New York, NY : Springer Science + Business Media, 2020)
    If bone defects occur, the body’s own healing mechanism can close them below a critical size; for larger defects, bone autografts are used. These are typically cut from the same person’s hip in a second surgery. Consequently, ...
  • Methods for intraoperative, sterile pose-setting of patient-specific microstereotactic frames 
    Vollmann, Benjamin; Müller, Samuel; Kundrat, Dennis; Ortmaier, Tobias; Kahrs, Lüder Alexander (Bellingham, Wash. : SPIE, 2015)
    This work proposes new methods for a microstereotactic frame based on bone cement fixation. Microstereotactic frames are under investigation for minimal invasive temporal bone surgery, e.g. cochlear implantation, or for ...
  • Osteointegration of porous poly-ε-caprolactone-coated and previtalised magnesium implants in critically sized calvarial bone defects in the mouse model 
    Grau, Michael; Seiler, Christian; Roland, Laura; Matena, Julia; Windhövel, Claudia; Teske, Michael; Escobar, Hugo Murua; Lüpke, Matthias; Seifert, Hermann; Gellrich, Nils-Claudius; Haferkamp, Heinz; Nolte, Ingo (Basel : MDPI AG, 2017)
    Metallic biomaterials are widely used in maxillofacial surgery. While titanium is presumed to be the gold standard, magnesium-based implants are a current topic of interest and investigation due to their biocompatible, ...
  • Panorama imaging for image-to-physical registration of narrow drill holes inside spongy bones 
    Bergmeier, Jan; Fast, Jacob Friedemann; Ortmaier, Tobias; Kahrs, Lüder Alexander (Bellingham, Wash. : SPIE, 2017)
    Image-to-physical registration based on volumetric data like computed tomography on the one side and intraoperative endoscopic images on the other side is an important method for various surgical applications. In this ...
  • Percutaneous inner-ear access via an image-guided industrial robot system 
    Baron, S.; Eilers, H.; Munske, B.; Toennies, J.L.; Balachandran, R.; Labadie, R.F.; Ortmaier, T.; Webster, R.J. (London : SAGE Publications Ltd., 2010)
    Image-guided robots have been widely used for bone shaping and percutaneous access to interventional sites. However, due to high-accuracy requirements and proximity to sensitive nerves and brain tissues, the adoption of ...
  • A rolling-gliding wear simulator for the investigation of tribological material pairings for application in total knee arthroplasty 
    Richter, Berna I.; Ostermeier, Sven; Turger, Anke; Denkena, Berend; Hurschler, Christof (London : BioMed Central Ltd., 2010)
    Background: Material wear testing is an important technique in the development and evaluation of materials for use in implant for total knee arthroplasty. Since a knee joint induces a complex rolling-gliding movement, ...
  • Stereo vision-based tracking of soft tissue motion with application to online ablation control in laser microsurgery 
    Schoob, Andreas; Kundrat, Dennis; Kahrs, Lüder Alexander; Ortmaier, Tobias (Amsterdam : Elsevier BV, 2017)
    Recent research has revealed that image-based methods can enhance accuracy and safety in laser microsurgery. In this study, non-rigid tracking using surgical stereo imaging and its application to laser ablation is discussed. ...
  • Ultrafast lasers in ophthalmology 
    Lubatschowski, Holger (Amsterdam : Elsevier B.V., 2010)
    Ultrafast laser pulses have become a promising tool for microsurgery of the eye. Due to the low energy threshold, side effects are limited to the micrometer range This precision enables the use of ultrashort laser pulses ...
  • User evaluation study on illumination requirements to design an augmented reality projector for open liver surgery 
    Ilango, Shivaraman; Knöchelmann, Marvin; Kahrs, Lüder Alexander; Wolf, Alexander; Ortmaier, Tobias; Lachmayer, Roland (Bellingham, Wash. : SPIE, 2018)
    Projector based augmented reality serves as an alternate visual guidance tool for surgeons when performing complicated open surgeries. In projector based augmented reality, image overlay projection is a technique that ...