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Smit, Daan (author), Spruit, Edward (author), Dankelman, J. (author), Tuijthof, G.J.M. (author), Hamming, J (author), Horeman, T. (author)Background Visual force feedback allows trainees to learn laparoscopic tissue manipulation skills. The aim of this experimental study was to find the most efficient visual force feedback method to acquire these skills. Retention and transfer validity to an untrained task were assessed. Methods Medical students without prior experience in...journal article 2017
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van de Berg, N.J. (author), Dankelman, J. (author), van den Dobbelsteen, J.J. (author)Purpose<br/>To study the ability of a human operator to manually correct for errors in the needle insertion path without partial withdrawal of the needle by means of an active, tip-articulated steerable needle.<br/><br/>Materials and Methods<br/>The needle is composed of a 1.32-mm outer-diameter cannula, with a flexure joint near the tip, and a...journal article 2017
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de Jong, T.L. (author), Dankelman, J. (author), van den Dobbelsteen, J.J. (author)A needle-tissue interaction experiment has been carried out, by inserting the inner needle of a trocar needle into two ex-vivo human livers. The dataset contains the forces that act on the needle during insertion and retraction into the livers. In addition, a MATLAB code file is included that provides base-level analysis of the data and...journal article 2017
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de Jong, T.L. (author), Pluymen (student), L.H. (author), van Gerwen, D.J. (author), Kleinrensink, GJ (author), Dankelman, J. (author), van den Dobbelsteen, J.J. (author)Medical phantoms can be used to study needle-tissue interaction and to train medical residents. The purpose of this research is to study the suitability of polyvinyl alcohol (PVA) as a liver tissue mimicking material in terms of needle-tissue interaction. Insertions into ex-vivo human livers were used for reference. Six PVA samples were...journal article 2017
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van de Berg, N.J. (author), de Jong, T.L. (author), van Gerwen, D.J. (author), Dankelman, J. (author), van den Dobbelsteen, J.J. (author)Steering of needles involves the planning and timely modifying of instrument-tissue force interactions to allow for controlled deflections during the insertion in tissue. In this work, the effect of tip shape on these forces was studied using 10 mm diameter needle tips. Six different tips were selected, including beveled and conical versions,...journal article 2017
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- Guédon, A.C.P. (author), Spruit, S. (author), Wauben, L.S.G.L. (author), van der Elst, M. (author), Doorn, N. (author), Dankelman, J. (author), van den Dobbelsteen, J.J. (author), Klein, J. (author) journal article 2017
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Sakes, A. (author), Regar, E. (author), Dankelman, J. (author), Breedveld, P. (author)Chronic total occlusions (CTOs) represent the “last frontier” of percutaneous interventions. The main technical challenges lies in crossing the guidewire into the distal true lumen, which is primarily due to three problems: device buckling during initial puncture, inadequate visualization, and the inability to actively navigate through the CTO....journal article 2016
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Guédon, A.C.P. (author), Paalvast, M.S.M. (author), Meeuwsen, F.C. (author), Tax, D.M.J. (author), van Dijke, A.P. (author), Wauben, L.S.G.L. (author), van der Elst, M. (author), Dankelman, J. (author), van den Dobbelsteen, J.J. (author)Operating Room (OR) scheduling is crucial to allow efficient use of ORs. Currently, the predicted durations of surgical procedures are unreliable and the OR schedulers have to follow the progress of the procedures in order to update the daily planning accordingly. The OR schedulers often acquire the needed information through verbal...journal article 2016
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Guédon, A.C.P. (author), Wauben, L.S.G.L. (author), Van der Eijk, A.C. (author), Vernooij, A.S.N. (author), Meeuwsen, F.C. (author), Van der Elst, M. (author), Hoeijmans, V. (author), Dankelman, J. (author), Van den Dobbelsteen, J.J. (author)Background Unavailability of instruments is recognised to cause delays and stress in the operating room, which can lead to additional risks for the patients. The aim was to provide an overview of the hazards in the entire delivery process of surgical instruments and to provide insight into how Information Technology (IT) could support this...journal article 2015
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Natenstedt, J. (author), Kok, A.C. (author), Dankelman, J. (author), Tuijthof, G.J.M. (author)Articular cartilage has limited regeneration capacities. One of the factors that appear to affect the in vitro cultivation of articular cartilage is mechanical stimulation. So far, no combination of parameters has been identified that offers the best results. The goal is to review the literature in search of the best available set of...journal article 2015
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Stunt, J.J. (author), Wulms, P.H. (author), Kerkhoffs, G.M. (author), Dankelman, J. (author), Van Dijk, C.N. (author), Tuijthof, G.J.M. (author)Background: Since simulators offer important advantages, they are increasingly used in medical education and medical skills training that require physical actions. A wide variety of simulators have become commercially available. It is of high importance that evidence is provided that training on these simulators can actually improve clinical...journal article 2014
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Horeman, T. (author), Meijer, E.J. (author), Harlaar, J.J. (author), Lange, J.F. (author), Van den Dobbelsteen, J.J. (author), Dankelman, J. (author)The tension in a suture is an important factor in the process of wound healing. If there is too much tension in the suture, the blood flow is restricted and necrosis can occur. If the tension is too low, the incision opens up and cannot heal properly. The purpose of this paper is to describe the design and evaluation of the Stitch Force (SF)...journal article 2013
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Horeman, T. (author), Dankelman, J. (author), Jansen, F.W. (author), Van den Dobbelsteen, J.J. (author)Box trainers equipped with sensors may help in acquiring objective information about a trainee's performance while performing training tasks with real instruments. The main aim of this study is to investigate the added value of force parameters with respect to commonly used motion and time parameters such as path length, motion volume, and task...journal article 2013
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Rodrigues, S.P. (author), Ter Kuile, M. (author), Dankelman, J. (author), Jansen, F.W. (author)This study was conducted to adapt and validate a patient safety (PS) framework for minimally invasive surgery (MIS) as a first step in understanding the clinical relevance of various PS risk factors in MIS. Eight patient safety risk factor domains were identified using frameworks from a systems approach to patient safety. A questionnaire was...journal article 2012
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Okken, L.M. (author), Chmarra, M.K. (author), Hiemstra, E. (author), Jansen, F.W. (author), Dankelman, J. (author)Various steerable instruments with flexible distal tip have been developed for laparoscopic surgery. The problem of steering such instruments, however, remains a challenge, because no study investigated which control method is the most suitable. This study was designed to examine whether thumb (joystick) or wrist control method is designated for...journal article 2012
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Henken, K.R. (author), Jansen, F.W. (author), Klein, J. (author), Stassen, L.P.S. (author), Dankelman, J. (author), Van den Dobbelsteen, J.J. (author)Background Technological developments allow for a variety of applications of video recording in health care, including endoscopic procedures. Although the value of video registration is recognized, medicolegal concerns regarding the privacy of patients and professionals are growing. A clear understanding of the legal framework is lacking....journal article 2012
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Van den Dobbelsteen, J.J. (author), Lee, R.A. (author), Van Noorden, M. (author), Dankelman, J. (author)The grasping instruments used in minimally invasive surgery reduce the ability of the surgeon to feel the forces applied on the tissue, thereby complicating the handling of the tissue and increasing the risk of tissue damage. Force sensors implemented in the forceps of the instruments enable accurate measurements of applied forces, but also...journal article 2012
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Rodrigues, S.P. (author), Horeman, T. (author), Dankelman, J. (author), Van den Dobbelsteen, J.J. (author), Jansen, F.W. (author)It is generally assumed that safety of tissue manipulations during (laparoscopic) surgery is related to the magnitude of force that is exerted on the tissue. To provide trainees with performance feedback about tissuehandling skills, it is essential to define objective criteria for judging the safety of applied forces. To be of clinical relevance...journal article 2011
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Horeman, T. (author), Rodrigues, S.P. (author), Van den Dobbelsteen, J.J. (author), Jansen, F.W. (author), Dankelman, J. (author)Background - To improve endoscopic surgical skills, an increasing number of surgical residents practice on box or virtual reality (VR) trainers. Current training is focused mainly on hand–eye coordination. Training methods that focus on applying the right amount of force are not yet available. Methods - The aim of this project is to develop a...journal article 2011
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Horeman, T. (author), Rodrigues, S.P. (author), Jansen, F.W. (author), Dankelman, J. (author), Van den Dobbelsteen, J.J. (author)Background - To improve endoscopic surgical skills, an increasing number of surgical residents practice on box or virtual-reality (VR) trainers. Current training is mainly focused on hand–eye coordination. Training methods that focus on applying the right amount of force are not yet available. Methods - The aim of this project is to develop a...journal article 2010