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Optimal Skateboard Geometry for Maximizing Ollie Height: a Multi-Phase Direct Collocation Optimization Study

Heinen, Jan (author)

Skateboarding involves a human controlling a four wheeled vehicle that is steered by tilting the standing surface. The riding mechanics of skateboarding have been well reported [2, 3]. The sport also includes aerial maneuvers such as jumping of stairs, flying off ramps and flipping and rotating the skateboard. The most basic aerial trick is...

master thesis 2022

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The Cloud Walker: Performance of a novel prototype of a passive gait orthosis tested by healthy people.

van Hengel, Thomas (author)

Goal: Build and evaluate the first prototype of the Cloud Walker, a passive assistive gait orthosis. Method: The Cloud Walker uses muscles of the upper body to store energy in the springs at the back of the Cloud Walker. This energy can than be used to swing the legs forward. The Cloud Walker was evaluated by 9 healthy participants walking on a...

master thesis 2022

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Machine-learning pipelines for classification of pathological tremor patients: A proof-of-concept

Assis de Souza, Alvaro (author)

Parkinson’s Disease (PD), Essential tremor (ET), and dystonia are movement disorders often misdiagnosed as one another and commonly present tremor as one of their motor symptoms. Rates of misdiagnosis between 30 and 50% of ET patients have been reported, where dystonia and PD are the most common missed diagnoses. Additionally, up to 50% of...

master thesis 2021

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Design and validation of a 3D printed curved hydraulic cylinder for a prosthetic wrist joint

Burema, Arine (author)

Introduction: Amputees still experience problems with the use of their upper limb prostheses, mainly in the lack of comfort and functionality. This results in rejection of the prosthesis or overuse injuries due to compensatory movements. The comfort and functionality should be improved by reducing weight and increasing the degrees of freedom....

master thesis 2021

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ECG Artefact Suppression and External Data Synchronization with the Medtronic Percept, a Deep Brain Stimulator with Sensing Technology

Stam, Mariëlle (author)

Deep brain stimulation (DBS) is used to treat a variety of movement disorders. In current DBS therapy, the stimulation parameters are manually adjusted based on a subjective assessment of patient’s symptoms. State-of-the-art DBS research focuses on recording brain activity to create a patient-specific neuronal profile that correlates with the...

master thesis 2021

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Establishing the elbow load and the within-pitcher load variability during a baseball pitch in relation to the ball speed

Bouman, Foskien (author)

Ulnar collateral ligament (UCL) injuries are common in baseball pitching. The elbow external valgus torque is assumed to be indicative for the applied load on the UCL. This study investigated the maximum external valgus and extension torque and their corresponding load variability during a baseball pitch and the relationship between the...

master thesis 2021

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Biomechanical model to optimize unilateral blade running

Luque Martin-Sacristan, Araceli (author)

Paralympic sports are growing more popular. Besides the dedicated training of the athlete, technology is crucial to empower amputees to perform at their highest level. The recent carbon fibre Running-Specific- Prosthesis (RSP) have energy stored and return capabilities that allow runners with amputations to perform almost as able-bodied. However...

master thesis 2021

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Non-Invasive Screening for Elevated Skin Temperature and Respiratory Rate related to COVID-19 using Thermal Imaging

Thomas, Akhil John (author)

Non-contact infrared thermal imaging provides a non-invasive, safe and accurate means for screening subjects. COVID-19 (a disease caused by the Severe Acute Respiratory Syndrome Corona Virus 2 (SARS-CoV-2)) has changed how health care workers (HCW) interact with patients. Despite the usage of personal protective equipment (PPE), social...

master thesis 2021

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An Empirical Evaluation of Stiffness Perception Using a Shoulder-Worn Haptic Interface

Leseman, Gailey (author)

Many patients with an upper-limb deficiency choose not to wear their prosthetic devices due to a multitude of reasons, including physical discomfort and unintuitive, cognitively demanding control methods. A new haptic interface was developed combining the desirable control characteristics of body-powered control prostheses with the comfort of an...

master thesis 2021

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Predicting Infections in Preterm Infants with Thermal Imaging Technology

Wirianto, Erik (author)

Neonatal sepsis is a dangerous non-specific disease in babies, especially neonate/newborns. It is one of the leading causes of neonate mortality rate, because of the difficulty to diagnose, leading to late or false treatment. Previous research has found the promising feature of artificial intelligence or machine learning in solving the problem....

master thesis 2021

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A New Pneumatic Actuator Design: For Compliant and Lightweight Lower Limb Exoskeletons

Boogaard, Lars (author)

Lower limb exoskeletons enable paraplegic patients to stand-up and walk again. However, the weight and overall functional performance of the exoskeleton prevents them from being widely used. To reduce the weight and increase<br/>the performance, pneumatic actuators can be used as an alternative to the commonly used electromechanical actuators....

master thesis 2021

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The Power of Pneumatics: Design of a Novel Elbow Prosthesis

Kieft, J. (author)

Introduction: Almost 57 percent of above elbow amputees stop using their prosthesis. One of the main factors of non-wear is the high weight. Pneumatic actuation can be more lightweight than electronic actuation, and might therefore help with reducing the mass of a prosthesis and...

master thesis 2020

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ARM3D: A 3D printed transhumeral arm prosthesis

Kusters, Madelon (author)

Aim: This project aims to design a lightweight, inexpensive and easy to use upper arm prosthesis through improving the design of ARM3D, which is a 3D printed body-powered transhumeral arm prosthesis. This study will cover general shortcomings of body-powered arm prostheses as the weight, cost, amount of parts and limited accessibility of them....

master thesis 2020

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On the design of a hybrid actuated hand prosthesis

Hoek, A.L. (author)

Hand prostheses commonly advertise on three main selling points: strength, speed and lightweight. Most conventional hand prostheses are only able to combine two of these three attributes. Therefore, combining all three attributes into a single device can result in a commercially attractive hand prosthesis. Another interesting point, particularly...

master thesis 2020

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A voluntary closing mechanism for the WILMER appealing prehensor

Mos, Daniek (author)

The WILMER appealing prehensor is a body-powered (BP) prosthesis for people with a trans-radial upper limb deficiency, which is highly appreciated because of its outward appearance and functionality. Currently, prehension of the WILMER appealing prehensor is voluntary opening (VO). Voluntary closing (VC) prehension could offer the prosthetic...

master thesis 2020

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Design of a 3D printed, breathable, volume adjustable, prosthetic socket for transradial amputees in low-income countries

Jansen, Hilde (author)

Prostheses are challenging to obtain in low-income countries due to a lack of experts, remote locations, unfortunate production circumstances and an inadequate amount of research. A 3D printed WILMER open fitting for transradial amputees has been developed, which can solve this problem. It is entirely 3D printed and connects the prosthesis to...

master thesis 2020

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Design of a Pneumatically Powered Hand Prosthesis for Toddlers: Introducing an underactuated 3-DOF linkage-based finger transmission mechanism

Vervaet, joost (author)

A large proportion of upper extremity prostheses are abandoned by their users. <br/>Commonly, the main reasons for abandonment are related to comfort, control and cosmetics.<br/>Prostheses are often experienced as too heavy and have limited functionality. <br/>A pneumatic power source is able to provide a relatively high force using a small and...

master thesis 2020

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Joint angle coupling of a musculoskeletal model and a graphical model of the hand for enhanced display in medical education

Cueto Fernandez, Judith (author)

Advanced anatomical knowledge and understanding of the muscles involved in various movements are crucial for medical practitioners to reach the correct diagnostic and successfully predict surgery outcomes. To acquire this knowledge, 3D graphical anatomical models which are displayed stereoscopically can effectively supplement cadaveric...

master thesis 2020

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Increased Pinch Force of Body Powered Prosthetic Hand with Pneumatic Force Servo

Schelvis, Davey (author)

In the Netherlands, there are around 3750 patients suffering from an upper limb deficiency. Many different prosthetic hands have been designed to give these people the function of their hand back. Of the people who own such a prosthetic hand, about forty percent does not wear their hand and about half of the wearers does not use all of the...

master thesis 2018

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An AM optimised transradial interface for low-income countries

Mazereeuw, Matthijs (author)

Prosthetic devices remain inaccessible for many amputees in low-income countries. The lack of trained professionals and resources to fit a prosthetic (interface) are principle reasons. The low cost at which additive manufacturing technology (AM) is able to produce a custom made part could change this. As such, the aim of this study was to design...

master thesis 2018