Searched for: subject%3A%22Instrumentation%22
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van der Wal, Nienke (author)
Introduction- The global incidence of thyroid cancer has risen significantly, prompting the development of innovative surgical techniques. Transoral thyroidectomy offers a scarless alternative, with the transoral endoscopic thyroidectomy vestibular approach (TOETVA) showing promising results. However, CO2 insufflation during TOETVA can lead to...
master thesis 2024
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Lussenburg, K.M. (author)
Additive manufacturing, or 3D printing, offers a new paradigm for the way functional products are designed, manufactured, and assembled. Its additive nature provides the ability to create complex-shaped parts, without an increase in production time or costs, which would be difficult to produce with conventional manufacturing. In addition,...
doctoral thesis 2024
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de Vries, Barbara (author)
Reliable assembly methods are needed to translate new endoscopic probes from the research phase to clinical testing. Design variation complicates standardized assembly and leads to a lengthy process creating inaccurate prototypes, preventing repeatable research. This thesis proposes a strategy for selecting the most effective assembly method by...
master thesis 2024
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Lenssen, T.A. (author), Dankelman, J. (author), Horeman, T. (author)
Introduction: Most robotic instruments and their drives still risk residual contamination due to cleaning complexities, rendering them limited reusable, and tend to have larger instruments than the 5mm laparoscopic standard. The novel steerable laparoscopic SATA-LRS uses modularity for cleanability and exchangeability. The SATA-Drive: a...
journal article 2024
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Lecardonnel, A. (author), de Servi, C.M. (author), Colonna, Piero (author), Laboureur, D. (author)
In evaporators, the distribution of the liquid and vapor phases among the channels is a convoluted problem, depending on a wide range of parameters. However, maldistribution causes important losses of performance. Due to their complexity, the accurate modeling of such two-phase flows is difficult to handle. Hence, experimental studies are...
journal article 2024
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Straathof, R. (author), Meijaard, J.P. (author), Perez, S.M. (author), Kolkman-Deurloo, Inger Karine K. (author), Nout, Remi A. (author), Heijmen, Ben J.M. (author), Wauben, L.S.G.L. (author), Dankelman, J. (author), van de Berg, N.J. (author)
Background: The steep radiation dose gradients in cervical cancer brachytherapy (BT) necessitate a thorough understanding of the behavior of afterloader source cables or needles in the curved channels of (patient-tailored) applicators. Purpose: The purpose of this study is to develop and validate computer models to simulate: (1) BT source...
journal article 2024
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Lussenburg, K.M. (author), van Starkenburg, R.I.B. (author), Sakes, A. (author), Breedveld, P. (author)
Metal additive manufacturing is a promising technology for the production of functional medical products, due to its high shape complexity and resolution, and ability to withstand sterilization temperatures. This study explores the possibility of designing a completely non-assembly steerable surgical instrument using Selective Laser Melting....
journal article 2024
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Kievits, A.J. (author), Duinkerken, B. H.Peter (author), Fermie, Job (author), Lane, R. (author), Giepmans, Ben N.G. (author), Hoogenboom, J.P. (author)
Recent advances in electron microscopy techniques have led to a significant scale up in volumetric imaging of biological tissue. The throughput of electron microscopes, however, remains a limiting factor for the volume that can be imaged in high resolution within reasonable time. Faster detection methods will improve throughput. Here, we have...
journal article 2024
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Moerman, A. (author), Karatsu, K. (author), Yates, S.J.C. (author), Huiting, R. (author), Steenvoorde, F. (author), Dabironezare, Shahab Oddin (author), Takekoshi, T. (author), Baselmans, J.J.A. (author), Brandl, B.R. (author), Endo, A. (author)
Context. Integrated superconducting spectrometers (ISSs) for wide-band submillimeter (submm) astronomy use quasi-optical systems for coupling radiation from the telescope to the instrument. Misalignment in these systems is detrimental to the system performance. The common method of using an optical laser to align the quasi-optical components...
journal article 2024
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Cheraghi, Morteza (author), Reniers, G.L.L.M.E. (author), Eslami Baladeh, Aliakbar (author), Khakzad, Nima (author), Taghipour, Sharareh (author)
Risk-based techniques such as risk graph and Layer of Protection Analysis (LOPA) are used to determine the Safety Integrity Level (SIL) of safety instrumented functions to ensure that risk is reduced to a tolerable level. However, these techniques have some drawbacks. For instance, they need absolute and precise numbers to evaluate SIL...
journal article 2024
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Trauzettel, F. (author), Vander Poorten, Emmanuel (author), Ourak, Mouloud (author), Dankelman, J. (author), Breedveld, P. (author)
While articulated surgical instruments have enabled the proliferation of minimally invasive interventions, procedures such as laparo-endoscopic single-site surgery are waning in popularity. One potential reason for this decline is a lack of sufficiently dexterous instruments. Although multi-steerable instruments exist, these are often complex...
journal article 2024
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Fung-A-Jou, Xavier (author)
Piping and Instrumentation Diagrams (P&IDs) are graphical representations utilized in chemical engineering plants. Due to confidentiality reasons and legacy drawings, these diagrams are sent in PDF format. Piping engineers need to make a material take-off (MTO), a document containing all the components of a P&ID from these drawings....
master thesis 2023
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Matai, Sagar (author)
Abstract—Introduction: Surgical instruments are stored, transported, cleaned, disinfected, and sterilized in instrument sets. These instrument sets have a predetermined fixed size, which means they cannot be stored or transported efficiently when empty or used efficiently for different types of instruments. This report presents the design of an...
master thesis 2023
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Lomans, Gabriël (author)
Extremely large telescopes (ELTs) are expected to be one of the most promising astronomical observation instruments when it comes to observing exoplanets. During observations, however, Earth’s atmosphere introduces optical distortion, which needs to be corrected. For this reason, a wavefront sensor (WFS) will be developed that comprises a 100 ⇥...
bachelor thesis 2023
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Boetzkes, Jos (author)
Background: Minimally invasive cancellous bone biopsy is a common medical procedure in which a needle is used to extract a piece of cancellous bone for examination. Unfortunately, this procedure is not always successful, as sometimes the biopsy can slip partially or completely, necessitating a new biopsy. The occurrence of these errors is not...
master thesis 2023
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Mol, Tessa (author)
Achieving appropriate soft tissue tension around the hip joint is an important factor for achieving hip stability after Total Hip Arthroplasty (THA). Hip instability leads to dislocations, pain, and is a common reason for early revision surgery. The current soft tissue tension assessments available during surgery rely on experience, and...
master thesis 2023
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Matthijssen, Rick (author)
Background:<br/>An endomyocardial biopsy (EMB) is an invasive procedure where biopsy samples are taken from within the heart for diagnosis of different myocardiopathies and or heart transplant rejection monitoring. During EMB procedures, a minimum of five tissue samples are required to be taken from the heart wall for investigation. <br/>Current...
master thesis 2023
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Portillo Arreguin, Diana (author)
This thesis examines the load distribution on 60 m long piles under gradual static loading, considering the POST Rotterdam high-rise building as the study project. The research employs fibre optic (FO) instrumentation on site to monitor strain changes in the piles over time and assess load transfer mechanisms. This data is integrated into a...
master thesis 2023
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Koens, Dennis (author)
High-tech systems are subjected to strict temperature requirements. Therefore temperature control using cooling water is vital for thermal stability. Unfortunately, components like pumps and fluid couplings generate flow disturbances, resulting in mechanical vibrations that influence the performance of the system. This research focusses on the...
master thesis 2023
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Hupkens, Lisanne (author)
Goal: Nerve injury is a typical complication of a fasciectomy, a surgical treatment for Dupuytren's contracture. This research focuses on the creation of a surgical device to prevent this medical complication.<br/>Design: A mechanical feedforward-based device with a spreading and cutting mechanism was proposed. Stretching the target tissue...
master thesis 2023
Searched for: subject%3A%22Instrumentation%22
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