Searched for:
(1 - 20 of 25)

Pages

document
Ali, A. (author), de Winter, J.C.F. (author), Dodou, D. (author), Breedveld, P. (author)
To overcome the challenges presented by complex 3-dimensional shapes and tortuous vasculature in the cardiovascular environment, we previously developed a prototype of a multi-steerable catheter having 4 DOFs controlled by two joysticks [1]. However, it remains unknown whether the added steering possibilities are beneficial in the cardiovascular...
abstract 2017
document
Scali, M. (author), Pusch, T.P. (author), Breedveld, P. (author), Dodou, D. (author)
abstract 2016
document
Scali, M. (author), Kreeft, Davey (author), Breedveld, P. (author), Dodou, D. (author)
Flexible steerable needles can follow complex curved paths inside the human body. In a previous work, we developed a multiple-part steerable needle prototype with a diameter of 1.2 mm, inspired by the ovipositor of parasitoid wasps. The needle consisted of seven nickel-titanium longitudinally aligned wires held together at the tip by a...
conference paper 2017
document
De Winter, J.C.F. (author), Dodou, D. (author), De Groot, S. (author), Abbink, D.A. (author), Wieringa, P.A. (author)
This paper presents the results of integrating hands-on experience in an engineering MSc course on human-machine systems. Students could voluntarily complete a homework assignment in which they performed manual control tasks using dedicated software. The tasks were accompanied by questions that students had to answer using the theory taught in...
conference paper 2010
document
De Winter, J.C.F. (author), Dodou, D. (author)
Shared control (also known as continuous haptic guidance or haptically active controls) has recently been introduced in car driving. With shared control, the driver receives continuous force feedback on the gas pedal or steering wheel, so that human and machine conduct the driving task simultaneously. Experiments in driving simulators have shown...
conference paper 2011
document
Sprang, Tim (author), Breedveld, P. (author), Dodou, D. (author)
This paper outlines the development of a four-part needle prototype inspired by the ovipositor of parasitic wasps. In the wasp ovipositor, three longitudinal segments called valves move reciprocally to gain depth in the substrate. It has been suggested that serrations located along the wasp ovipositor induce a friction difference between...
conference paper 2016
document
Dodou, D. (author)
The most effective screening method for colonic cancer is colonoscopy. However, colonoscopy cannot be easily embraced by the population because of the related pain intensity. Robotic devices that pull themselves forward through the colon are a possible alternative. The main challenge for such devices is their locomotion method along the slippery...
doctoral thesis 2006
document
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
document
De Winter, J.C.F. (author), Dodou, D. (author)
It is known that statistically significant (positive) results are more likely to be published than non-significant (negative) results. However, it has been unclear whether any increasing prevalence of positive results is stronger in the "softer" disciplines (social sciences) than in the "harder" disciplines (physical sciences), and whether the...
journal article 2015
document
De Winter, J.C.F. (author), Dodou, D. (author)
Function allocation is a core activity of the human–machine systems discipline. Sixty years ago, Paul Fitts marked the outset of function allocation research with an 11-statements list. Since then numerous function allocation methods have been proposed, but strikingly the seminal Fitts list spans the entire history of this domain and continues...
journal article 2011
document
Dodou, D. (author), De Winter, J.C.F. (author)
journal article 2012
document
Vakalopoulos, Konstantinos A. (author), Wu, Zhouqiao (author), Kroese, Leonard F. (author), van der Horst, Paul H. (author), Lam, King H. (author), Dodou, D. (author), Jeekel, Johannes (author), Lange, Johan F. (author)
Background: Tissue adhesives may be useful for sealing bowel anastomoses by preventing anastomotic leakage. Prior to clinical implementation, an in-depth analysis of the clinical and immunohistopathological effects of tissue adhesives on the target tissue and of the mechanical strength of the adhesive bond in an in vivo model is needed....
journal article 2017
document
Sakes, A. (author), van der Wiel, M. (author), Henselmans, P.W.J. (author), van Leeuwen, J.L. (author), Dodou, D. (author), Breedveld, P. (author)
Background<br/>In nature, shooting mechanisms are used for a variety of purposes, including prey capture, defense, and reproduction. This review offers insight into the working principles of shooting mechanisms in fungi, plants, and animals in the light of the specific functional demands that these mechanisms fulfill.<br/><br/>Methods<br/>We...
journal article 2016
document
Dodou, D. (author), De Winter, J.C.F. (author)
To investigate the association between proximal colonic neoplasia and distal lesions as a function of the lesion type. The extent to which health, demographic, and study characteristics moderate this association was also examined.
journal article 2011
document
Sakes, A. (author), van der Wiel, Marleen (author), Dodou, D. (author), Breedveld, P. (author)
In this study we investigated whether exerting an impulse on a Chronic Total Occlusion (CTO) improves the success rate of CTO crossing as compared to the currently used method of statically pushing the guidewire against the CTO. A prototype (Ø2 mm) was developed that generates translational momentum using a spring-loaded indenter and converts it...
journal article 2017
document
Scali, M. (author), Pusch, T.P. (author), Breedveld, P. (author), Dodou, D. (author)
Flexible steerable needles have the potential to allow surgeons to reach deep targets inside the human body with higher accuracy than rigid needles do. Furthermore, by maneuvering around critical anatomical structures, steerable needles could limit the risk of tissue damage. However, the design of a thin needle (e.g., diameter under 2 mm) with a...
journal article 2018
document
Dodou, D. (author), Breedveld, P. (author), Wieringa, P.A. (author)
One of the main challenges in designing diagnostic devices able to move along the colon is their locomotion method. Generating friction without applying high normal forces is a key requirement in order to eliminate the risk of tissue damage. One possible solution is to generate friction by means of adhesive forces. For this reason, the device...
journal article 2006
document
Scali, M. (author), Henselmans, P.W.J. (author), Dodou, D. (author), Breedveld, P. (author)
Needles with diameter under 1 mm are used in various medical applications to limit the risk of complication and patient discomfort during the procedure. Next to a small diameter, needle steerability is an important property for reaching targets located deep inside the body accurately and precisely. In this paper, we present a 0.5-mm prototype...
journal article 2019
document
de Winter, J.C.F. (author), Dodou, D. (author), Happee, R. (author), Eisma, Y.B. (author)
Vehicles are increasingly equipped with sensors that measure the state of the vehicle and surrounding road users. Although most of these sensor data currently remain local to the vehicle, the data could be shared with the aim to improve road safety. We postulate that there is a range of scenarios regarding data sharing, with two extremes: In...
journal article 2019
document
van Assenbergh, S.P. (author), Fokker, Marike (author), Langowski, Julian K.A. (author), van Esch, J.H. (author), Kamperman, Marleen (author), Dodou, D. (author)
The adhesiveness of biological micropatterned adhesives primarily relies on their geometry (e.g., feature size, architecture) and material properties (e.g., stiffness). Over the last few decades, researchers have been mimicking the geometry and material properties of biological micropatterned adhesives. The performance of these biomimetic...
journal article 2019
Searched for:
(1 - 20 of 25)

Pages