Searched for: department%3A%22BioMechanical%255C+Engineering%22
(681 - 700 of 748)
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Verdaasdonk, E.G.G. (author), Stassen, L.P.S. (author), Widhiasmara, P.P. (author), Dankelman, J. (author)Background- The use of checklists is a promising strategy for improving patient safety in all types of surgical processes inside and outside the operating room. This article aims to provide requirements and implementation of checklists for surgical processes. Methods- The literature on checklist use in the operating room was reviewed based on...journal article 2008
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Verdaasdonk, E.G.G. (author), Stassen, L.P.S. (author), Hoffmann, W.F. (author), Van der Elst, M. (author), Dankelman, J. (author)Background A high incidence of problems with the technical equipment is known to occur during routine laparoscopic procedures. Use of a structured checklist of preparatory measures could help to prevent these problems. This study aimed to determine the extent to which a checklist reduced the number of incidents with technical laparoscopic...journal article 2008
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Karssen, J.G. (author), Wisse, M. (author)Large disturbances can cause a biped to fall. If an upcoming fall can be detected, damage can be minimized or the fall can be prevented. We introduce the multi-way principal component analysis (MPCA) method for the detection of upcoming falls. We study the detection capability of the MPCA method in a simulation study with the simplest walking...journal article 2008
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Schouten, A.C. (author), De Vlugt, E. (author), Van der Helm, F.C.T. (author)This study aimed to identify the functional contribution of reflexes to human motor control during posture maintenance. Continuous random force disturbances were applied at the hand while the subjects were instructed to minimize the deviation resulting from the force disturbances. The results were analyzed in the frequency domain with frequency...journal article 2008
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Chmarra, M.K. (author), Dankelman, J. (author), Van den Dobbelsteen, J.J. (author), Jansen, F.W. (author)Background - Not much is known about the exact role offorce feedback in laparoscopy. This study aimed to determine whether force feedback influences movements of instruments during training in laparoscopic tasks and whether force feedback is required for training in basic laparoscopic force application tasks. Methods - A group of 19 gynecologic...journal article 2008
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Verdaasdonk, E.G.G. (author)Laparoscopic surgery is one of the most important surgical innovations of the 20th century. Despite the well-known benefits for the patient, such as reduced pain, reduced hospital stay and quicker return to normal physical activities, there are also some drawbacks. Performing laparoscopic surgery requires specific psychomotor skills and...doctoral thesis 2008
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Verdaasdonk, E.G. (author), Dankelman, J. (author), Lange, J.F. (author), Stassen, L.P.S. (author)Background - It is desirable that surgical trainees are proficient in basic laparoscopic motor skills (eye–hand coordination). The present study evaluated the use of predefined proficiency criteria on a basic virtual reality (VR) simulator in preparation for a laparoscopic course on animal models. Methods - Twenty-eight surgical trainees who...journal article 2008
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Hobbelen, D.G.E. (author), Wisse, M. (author)Limit cycle walkers are bipeds that exhibit a stable cyclic gaitwithout requiring local controllability at all times during gait. A well-known example of limit cycle walking is McGeer’s “passive dynamic walking,” but the concept expands to actuated bipeds as involved in this study. One of the stabilizing effects in limit cycle walkers is the...journal article 2008
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Van Adrichem, L.G. (author)For neuraxial anesthesia, successfijl epidural needle insertion is a complex procedure requiring penetration of several spinal tissue layers and stopping the needle as soon as the epidural space is reached. When the epidural needle enters the epidural space, a part of the tissue resistive forces disappear abruptly, resulting in a needle...master thesis 2008
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Dodou, D. (author), Van den Berg, M. (author), Van Gennip, J. (author), Breedveld, P. (author), Wieringa, P.A. (author)A self-propelling colonoscopic device moving inside the colonic tube should be able to periodically grip safely to the colonic wall as well as to manipulate the generated friction. The feasibility of achieving high grip and friction manipulation by covering the device with mucoadhesive films is experimentally tested. More precisely, the...journal article 2008
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Erden, M.S. (author), Komoto, H. (author), Van Beek, T.J. (author), D'Amelio, V. (author), Echavarria, E. (author), Tomiyama, T. (author)This work is aimed at establishing a common frame and understanding of function modeling (FM) for our ongoing research activities. A comparative review of the literature is performed to grasp the various FM approaches with their commonalities and differences. The relations of FM with the research fields of artificial intelligence, design theory,...journal article 2008
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Van den Wijngaard, J.P.H.M. (author), Kolyva, C. (author), Siebes, M. (author), Dankelman, J. (author), Van Gemert, M.J.C. (author), Piek, J.J. (author), Spaan, J.A.E. (author)The subendocardium is most vulnerable to ischemia, which is ameliorated by relaxation during diastole and increased coronary pressure. Recent clinical techniques permit the measuring of subendocardial perfusion and it is therefore important to gain insight into how measurements depend on perfusion conditions of the heart. Using data from...journal article 2008
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De Winter, J. (author), Mulder, M. (author), Van Paassen, M.M. (author), Abbink, D.A. (author), Wieringa, P.A. (author)Driver assistance systems that supply force feedback (FF) on the accelerator commonly use relative distance and velocity with respect to the closest lead vehicle in front of the own vehicle. This 1-D feedback might not accurately represent the situation and can cause unwanted step-shaped changes in the FFs during lateral maneuvers. To address...journal article 2008
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De Winter, J.C.F. (author), Mulder, M. (author), Van Paassen, M.M. (author), Abbink, D.A. (author), Wieringa, P.A. (author)Driver assistance systems that supply force feedback (FF) on the accelerator commonly use relative distance and velocity with respect to the closest lead vehicle in front of the own vehicle. This 1-D feedback might not accurately represent the situation and can cause unwanted step-shaped changes in the FFs during lateral maneuvers. To address...journal article 2008
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Schouten, A.C. (author), De Vlugt, E. (author), Van Hilten, J.J. (author), Van der Helm, F.C. (author)This study aimed to analyse the dynamic properties of the muscle spindle feedback system of shoulder muscles during a posture task. External continuous force disturbances were applied at the hand while subjects had to minimize their hand displacements. The results were analysed using two frequency response functions (FRFs) from which the model...journal article 2008
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- Van Drunen, A. (author) master thesis 2008
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Verdaasdonk, E.G.G. (author), Dankelman, J. (author), Lange, J.F. (author), Stassen, L.P.S. (author)Background- Laparoscopic suturing is one of the most difficult tasks in endoscopic surgery, requiring extensive training. The aim of this study was to determine the transfer validity of knot-tying training on a virtual-reality (VR) simulator to a realistic laparoscopic environment. Methods- Twenty surgical trainees underwent basic eye–hand...journal article 2007
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Knulst, A.J. (author)Background During eye surgery in patients suffering Age Related Macular Degeneration translocating a graft of tissue without damaging the vulnerable top layer is highly problematic using the currently available instruments. This study presents indirect Heat Induced Attachment and Detachment (HIAD) as a new concept for single side tissue...master thesis 2007
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Verhoef, J. (author)Colonic cancer is the second leading cause of death among cancers in the Western world. Early detection greatly improves the chances of survival. Colonoscopy is a non-invasive detection method through natural access, making it possible to look inside the colon, take biopsies and remove small polyps that can develop into cancer. Colonoscopy is...master thesis 2007
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Chmarra, M.K. (author), Jansen, F.W. (author), Grimbergen, C.A. (author), Dankelman, J. (author)Aims- Minimally invasive surgery (MIS) requires a high degree of eye–hand coordination from the surgeon. To facilitate the learning process, objective assessment systems based on analysis of the instruments’ motion are being developed. To investigate the influence of performance on motion characteristics, we examined goaloriented movements in a...journal article 2007
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