Searched for: contributor%3A%22Dankelman%2C+J.+%28mentor%29%22
(141 - 160 of 167)
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Krijger, T. (author)Endo-Nasal Skull-Base Surgery (ENSBS) is preformed at the area around the base of the skull and has great advantages compared to Open Skull Base Surgery (OSBS). Due to limitations in surgical equipment, ENSBS is not always a viable option. This research attempts to address these limitations through the development of a highly manoeuvrable,...master thesis 2012
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Gahler, M.C. (author)Accurate positioning of the needle tip during insertion is essential to ensure a maximum effect of the treatment. Target error is a problem and a lot research fields aim to improve needle insertions. The possibility to measure cutting force and stiffness force separately from friction forces supports the development of new types of needles,...master thesis 2012
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Ambrosi, M. (author)All around the world countries’ populations are aging and with this increase of expected lifetimes there is additional need for medical interventions such as hip replacements. With many people outliving the lifetime of these implanted parts, revisions are sometimes necessary. In some hip prostheses, layers of fibrous tissue can grow and decrease...master thesis 2012
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De Vries, K. (author)Performing complex surgical procedures laparoscopically is hampered by the loss of dexterity for the surgeon. The MIM has been developed to overcome those problems. This MIM was never tested. This report describes user tests performed with this MIM. Users applied lower forces to the test pads, but used more time and made more errors during...master thesis 2012
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Harms, J.J. (author)Usability issues have been observed in luminaire repositioning, during surgical operations. These difficulties were confirmed to be related to the kinematics of the translational subsystem of the suspension mechanism, specifically the possibility of singularity. Due to which the required force for luminaire repositioning depends on the spatial...master thesis 2012
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De Wit, M.R. (author)The aim of this study was to investigate if motion performance metrics for minimally invasive surgery could be derived from a two-dimensional measurement, for surgical procedures in which the movements are restricted to a defined plane. As it was assumed that for arthroscopy in the knee such behavior is present, a knee arthroscopy simulator was...master thesis 2012
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Boessenkool, W. (author)Epidural anesthesia is a commonly used anesthesia method during surgery or giving birth to a child. During the insertion of the needle in the back of the patient, the anesthetist has to interpret the different forces which requires extensive skills. To obtain these skills the residents train on patients, which is not without risk. Due to a lot...master thesis 2012
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Struik, T. (author)Knee osteoarthritis affects up to 10% of adults in Western societies. Estimations on prevalence show over five times more patients in 2030. Conventional therapy does not provide sufficient and cost effective therapy. Joint distraction is currently considered as new treatment option. Preliminary studies explored the feasibility of knee joint...master thesis 2012
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- Arkenbout, E.A. (author) master thesis 2012
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Zha, X. (author)In the past two decades, dental implants have been an essential component of the public health. However, lack of a reliable and safe dental surgery imaging modality remains a major problem. Optical coherence tomography (OCT) is an interferometic optical imaging modality that is somewhat similar to B-mode ultrasound but utilizes infrared light...master thesis 2011
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Van de Berg, N.J. (author)Thermal spread is the extend of lateral damage resulting from soft tissue dissection by means of an energetic surgical instrument. Both a true definition of this factor, and a consistent means to quantify it, are still lacking. This study attempts to standardize thermal spread by 1) listing the relevant medical, technical, and statistical...master thesis 2011
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Golde, T.A. (author)In the last thirty years, many new surgical methods and techniques such as laparoscopic surgery and natural orifice surgery have been introduced into hospitals worldwide. As these technologies have progressed, surgical instruments have become increasingly more complex and also much more difficult to clean and sterilize. In this paper, one such...master thesis 2011
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Goffi, M. (author)Aim: Inspect the MRI image sequence to see if it can image the components of an atherosclerotic plaque and investigate if pressure induced deformation measurements can be done on these images. Methods: Four porcine iliac arteries with atherosclerotic plaques were scanned with a T2 imaging sequence in a 7T MRI scanner. One high resolution scan...master thesis 2011
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Van der Maas, J.P. (author)Purpose: An accurate needle or catheter placement is essential for the success of many procedures like regional anesthesia or biopsy taking. The accuracy of the needle or catheter placement could be increased by application of a rotational motion, which reduces the tissue indentation and required insertion force. Materials and methods: A...master thesis 2011
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Emirdag, E. (author)During the surgery, the lighting unit often needs to be manually adapted. However, the manual manipulation may cause loss of concentration, loss of time and increased risk of infections. To improve the manipulation, a semi-automated lighting system commanded by the surgeon is suggested. The commands are given via a pointer device to indicate the...master thesis 2011
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Gupta, P. (author)Vertebroplasty is a minimally invasive procedure for treating spine. Cement leakage is problem occurring from usage of low viscosity bone cements. High viscosity bone cements are difficult to inject with current design of cement gun due to very high injection forces. A new design of cement gun is developed for injection of high viscosity bone...master thesis 2011
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Manoharan, V. (author)Epidural anaesthesia is a pain relief technique commonly performed on patients in labor. It requires insertion of a needle into patients back into the epidural space of the spine and inject anaesthetic. It is a blind procedure and anaesthesiologists rely only on the forces felt during needle insertion to determine the position of the needle tip....master thesis 2011
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Pessers, R.A.W. (author)This thesis discusses the design of a new steerable tip for a laparoscopic instrument. A new tip design is required since current steerable tip designs have problems with the bending stiffness and the lifespan of the cables. Underaction is a main cause of the low tip stiffness. Since one of the design requirements is that the tip needs to be...master thesis 2011
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Van Gorkum, R.F.P. (author)Orthopaedic surgery includes frequent removal of bony tissue with large instruments that require a significant force to operate. An increasing number of surgeons, especially female and older surgeons, cannot operate high-load orthopedic instruments properly because they lack the necessary force or hand span. The goal of this study is to develop...master thesis 2011
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Trommelen, M.H.T. (author)When performing minimally invasive interventions, surgeons use grippers to grip and manipulate tissue. These grippers generally rely on their toothed profile and require pinching of the tissue for sufficient grip, entailing a risk of tissue damage. An solution should be found for this risk of damage. An alternative could be to manipulate the...master thesis 2011
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