Searched for: subject:"Catheters"
(1 - 11 of 11)
document
Sakes, A. (author), Grandia, Leander (author), Lether, Remie (author), Steenstra, Lukas (author), Valentijn, Maurice C. (author), Breedveld, P. (author), Spronck, J.W. (author)
A major challenge during minimally invasive surgery is transfer of high forces through small, flexible instruments, such as needles and catheters, because of their low buckling resistance. In this study, we determined the feasibility of using a Newton's Cradle-inspired catheter (patented) to transfer high-force impulses. Exerting a high-force...
journal article 2019
document
Culmone, C. (author), Ali, A. (author), Scali, M. (author), Menciassi, Arianna (author), Breedveld, P. (author)
This work focuses on the design of a new device (called ChoRe) to place artificial chords in the mitral valve structure during a trans-catheter procedure. The aim of the device is to restore the correct functionality of the valve and solve mitral valve regurgitation, that is, a common consequence of chordae tendineae rupture. An analysis of...
journal article 2019
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Sandberg, Evelien M. (author), Twijnstra, A.R.H. (author), van Meir, C. A. (author), Kok, H. S. (author), van Geloven, Nan (author), Gludovacz, K. (author), Kolkman, W. (author), Nagel, H.T.C. (author), Haans, L (author), Kapiteijn, K. (author), Jansen, F.W. (author)
Objective: To evaluate if immediate catheter removal (ICR) after laparoscopic hysterectomy is associated with similar retention outcomes compared with delayed removal (DCR). Study design: Non-inferiority randomised controlled trial. Population: Women undergoing laparoscopic hysterectomy in six hospitals in the Netherlands. Methods: Women were...
journal article 2019
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Sandberg, Evelien M. (author), Leinweber, Fleur S. (author), Herbschleb, Petra J. (author), Berends-van der Meer, Dorien M.A. (author), Jansen, F.W. (author)
The aim of this study was to evaluate the catheterisation regimes after a laparoscopic hysterectomy (LH) in Dutch hospitals and to assess the nurses’ opinion on this topic. This was particularly relevant as no consensus exists on the best moment to remove a urinary catheter after an LH. All 89 Dutch hospitals were successfully contacted and...
journal article 2018
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Sharei Amarghan, H. (author), Alderliesten, Tanja (author), van den Dobbelsteen, J.J. (author), Dankelman, J. (author)
Guidewires and catheters are used during minimally invasive interventional procedures to traverse in vascular system and access the desired position. Computer models are increasingly being used to predict the behavior of these instruments. This information can be used to choose the right instrument for each case and increase the success rate...
review 2018
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Horeman, T. (author), Buiter, E.C. (author), Pouran, B. (author), Stijntjes, M. (author), Dankelman, J. (author), Tuijthof, G.J.M. (author)
This experimental work focused on the sensor selection for the development of a needle-like instrument to treat small isolated cartilage defects with hydrogels. The aim was to identify the most accurate and sensitive imaging method to determine the location and size of defects compared to a gold standard (µCT). Only intravascular ultrasound...
journal article 2018
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Tan, M. (author), Chen, C. (author), Chen, Z. (author), Janjic, Jovana (author), Daeichin, V. (author), Chang, Z.Y. (author), Noothout, E.C. (author), van Soest, G. (author), Verweij, M.D. (author), de Jong, N. (author), Pertijs, M.A.P. (author)
This paper presents an area- and power-efficient application-specified integrated circuit (ASIC) for 3-D forward-looking intravascular ultrasound imaging. The ASIC is intended to be mounted at the tip of a catheter, and has a circular active area with a diameter of 1.5 mm on the top of which a 2-D array of piezoelectric transducer elements is...
journal article 2018
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Liu, Shengnan (author), Eggermont, Jeroen (author), Wolterbeek, Ron (author), Lelieveldt, B.P.F. (author), Dijkstra, J (author)
Intravascular optical coherence tomography (IVOCT) is an intravascular imaging modality which enables the visualization arterial structures at the micro-structural level. The interpretations of these structures is mainly on the basis of relative image intensities. However, even for homogeneous tissue light intensities can differ. In this study...
conference paper 2016
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Godeschalk-Slagboom, C.J. (author), Van der Geest, R. (author), Zeppenfeld, K. (author), Botha, C.P. (author)
Objective The integrated visualization of cardiac MRI during a ventricular tachycardia (VT) mapping and ablation procedure would provide improved catheter guidance and tissue assessment. We developed a system for and explored the added value of simultan o s visualization of intracardiac voltage measurements and MRI-derived myocardial scar...
journal article 2012
document
Langelaar, M. (author), Van Keulen, F. (author)
This article illustrates the opportunities that combining computational modeling and systematic design optimization techniques offer to facilitate the design process of shape memory alloy (SMA) structures. Focus is on shape memory behavior due to the R-phase transformation in Ni-Ti, for which a dedicated constitutive model is formulated. In this...
conference paper 2007
document
Langelaar, M. (author)
This thesis explores the possibilities of design optimization techniques for designing shape memory alloy structures. Shape memory alloys are materials which, after deformation, can recover their initial shape when heated. This effect can be used for actuation. Emerging applications for shape memory alloys are e.g. miniaturized medical...
doctoral thesis 2006
Searched for: subject:"Catheters"
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