Low Cost Hand-Tracking Devices to Design Customized Medical Devices

2015 ◽  
pp. 351-360 ◽  
Author(s):  
Giorgio Colombo ◽  
Giancarlo Facoetti ◽  
Caterina Rizzi ◽  
Andrea Vitali
Keyword(s):  
Medical Devices ◽  
Low Cost ◽  
Hand Tracking ◽  
Tracking Devices

Automatic Generation of Software Interfaces for Hand-Tracking Devices

2015 ◽  
Author(s):  
Giorgio Colombo ◽  
Caterina Rizzi ◽  
Giancarlo Facoetti ◽  
Andrea Vitali
Keyword(s):  
Code Generation ◽  
Low Cost ◽  
Automatic Generation ◽  
Hand Tracking ◽  
Leap Motion ◽  
Software Module ◽  
Development Environment ◽  
Software Interfaces ◽  
Automatic Code ◽  
Tracking Devices

This paper presents a software module, named tracking plug-in, developed to automatically generate the source code of software interfaces for managing the interaction with low cost hand-tracking devices (e.g., Leap Motion and Intel Gesture Camera) and replicate/emulate manual operations usually performed to design custom-fit products, such medical devices and garments. The proposed solution is based on the Eclipse platform, a free integrated development environment (IDE), that allow us to manage the automatic code generation in a simple way after having defined the target application using a meta-model language, in our case the UML class diagram. First, we describe the background as well as the main problem, then, the software solution and adopted tools (i.e., Eclipse and Acceleo). Finally, the preliminary tests carried out for two applicative contexts (prosthetic and textile/clothing) are presented.

A Preliminary Study of New Interaction Devices to Enhance Virtual Socket Design

2014 ◽  
Author(s):  
Giorgio Colombo ◽  
Caterina Rizzi ◽  
Giancarlo Facoetti ◽  
Andrea Vitali
Keyword(s):  
Low Cost ◽  
Research Work ◽  
Hand Tracking ◽  
Leap Motion ◽  
Prosthetic Socket ◽  
Lower Limb Prosthesis ◽  
Preliminary Study ◽  
Augmented Interaction ◽  
Tracking Devices ◽  
Limb Prosthesis

This paper presents a research work on the augmented interaction applied to an innovative platform to design lower limb prosthesis, in particular the prosthetic socket. The underlining idea is to experiment low-cost hand-tracking devices, to manipulate the 3D virtual model of the socket using hands as traditional done by the prosthetist. The goal is to make available a modeling tool, named Socket Modeling Assistant-SMA that permits to replicate/emulate manual operations usually performed by the prosthetist during the traditional development process. Two devices have been considered and compared: the Leap Motion device and the Intel Gestures Camera. To this end a set of gestures has been identified to make more natural the interaction with SMA. Preliminary tests and results reached so are described and discussed.

Surface Modification of Poly(Vinylchloride) for Manufacturing Advanced Catheters

2020 ◽  
Vol 27 (10) ◽  
pp. 1616-1633 ◽  
Author(s):  
Oana Cristina Duta ◽  
Aurel Mihail Ţîţu ◽  
Alexandru Marin ◽  
Anton Ficai ◽  
Denisa Ficai ◽  
...  
Keyword(s):  
Surface Modification ◽  
Chemical Modification ◽  
Medical Devices ◽  
Low Cost ◽  
Physical And Mechanical Properties ◽  
Polymeric Materials ◽  
Modern Medicine ◽  
Structural Failure ◽  
Chemical Grafting ◽  
One Step

Polymeric materials, due to their excellent physicochemical properties and versatility found applicability in multiples areas, including biomaterials used in tissue regeneration, prosthetics (hip, artificial valves), medical devices, controlled drug delivery systems, etc. Medical devices and their applications are very important in modern medicine and the need to develop new materials with improved properties or to improve the existent materials is increasing every day. Numerous reasearches are activated in this domain in order to obtain materials/surfaces that does not have drawbacks such as structural failure, calcifications, infections or thrombosis. One of the most used material is poly(vinylchloride) (PVC) due to its unique properties, availability and low cost. The most common method used for obtaining tubular devices that meet the requirements of medical use is the surface modification of polymers without changing their physical and mechanical properties, in bulk. PVC is a hydrophobic polymer and therefore many research studies were conducted in order to increase the hydrophilicity of the surface by chemical modification in order to improve biocompatibility, to enhance wettability, reduce friction or to make lubricious or antimicrobial coatings. Surface modification of PVC can be achieved by several strategies, in only one step or, in some cases, in two or more steps by applying several techniques consecutively to obtain the desired modification / performances. The most common processes used for modifying the surface of PVC devices are: plasma treatment, corona discharge, chemical grafting, electric discharge, vapour deposition of metals, flame treatment, direct chemical modification (oxidation, hydrolysis, etc.) or even some physical modification of the roughness of the surface.

scholarly journals Tomographic Proximity Imaging Using Conductive Sheet for Object Tracking

Sensors ◽  
2021 ◽  
Vol 21 (8) ◽  
pp. 2736
Author(s):  
Zehao Li ◽  
Shunsuke Yoshimoto ◽  
Akio Yamamoto
Keyword(s):  
Inverse Problem ◽  
Theoretical Model ◽  
Low Cost ◽  
Hand Tracking ◽  
Depth Camera ◽  
Capacitance Density ◽  
Evaluation Test ◽  
Density Problem ◽  
Imaging Sensor ◽  
Tomographic Approach

This paper proposes a proximity imaging sensor based on a tomographic approach with a low-cost conductive sheet. Particularly, by defining capacitance density, physical proximity information is transformed into electric potential. A novel theoretical model is developed to solve the capacitance density problem using the tomographic approach. Additionally, a prototype is built and tested based on the model, and the system solves an inverse problem for imaging the capacitance density change that indicates the object’s proximity change. In the evaluation test, the prototype reaches an error rate of 10.0–15.8% in horizontal localization at different heights. Finally, a hand-tracking demonstration is carried out, where a position difference of 33.8–46.7 mm between the proposed sensor and depth camera is achieved at 30 fps.

Delays in Manual Reaching Are Associated with Impaired Functional Abilities in Early Dementia Patients

2015 ◽  
Vol 40 (1-2) ◽  
pp. 63-71 ◽  
Author(s):  
Casper de Boer ◽  
Johan J.M. Pel ◽  
Johannes van der Steen ◽  
Francesco Mattace-Raso
Keyword(s):  
Daily Living ◽  
Hand Movement ◽  
Hand Tracking ◽  
Functional Abilities ◽  
Dementia Patients ◽  
Early Dementia ◽  
Tracking Devices ◽  
The Impact ◽  
Hand Response

Background/Aims: Recent evidence shows that early dementia patients have deficits in manual reaching tasks. It is important to understand the impact of these functional disabilities on their quality of life. The aim of this study was to investigate if there is an association between manual reaching and measures of (instrumental) activities of daily living (IADL) in a group of patients with cognitive complaints. Methods: The manual reaching performance of 27 patients was assessed in detail with eye and hand tracking devices. Patients were divided into three groups based on self-reported loss of IADL function. Parameters describing hand response and movement times were compared between groups. Results: Patients with loss of IADL function in ≥1 domain had delayed hand response and hand movement times towards visible targets compared to patients with no loss of IADL function. Conclusion: Delays in manual reaching movements are related to the degree of loss of IADL function in early dementia patients.

scholarly journals Using Commercial Physical Activity Trackers for Health Promotion Research: Four Case Studies

2018 ◽  
Vol 20 (3) ◽  
pp. 381-389 ◽  
Author(s):  
Gabrielle Turner-McGrievy ◽  
Danielle E. Jake-Schoffman ◽  
Camelia Singletary ◽  
Marquivieus Wright ◽  
Anthony Crimarco ◽  
...  
Keyword(s):  
Physical Activity ◽  
Health Promotion ◽  
Case Studies ◽  
Low Cost ◽  
Lessons Learned ◽  
Assessment Tools ◽  
Sensewear Armband ◽  
Research And Practice ◽  
Activity Trackers ◽  
Tracking Devices

Background. Wearable physical activity (PA) trackers are becoming increasingly popular for intervention and assessment in health promotion research and practice. The purpose of this article is to present lessons learned from four studies that used commercial PA tracking devices for PA intervention or assessment, present issues encountered with their use, and provide guidelines for determining which tools to use. Method. Four case studies are presented that used PA tracking devices (iBitz, Zamzee, FitBit Flex and Zip, Omron Digital Pedometer, Sensewear Armband, and MisFit Flash) in the field—two used the tools for intervention and two used the tools as assessment methods. Results. The four studies presented had varying levels of success with using PA devices and experienced several issues that impacted their studies, such as companies that went out of business, missing data, and lost devices. Percentage ranges for devices that were lost were 0% to 29% and was 0% to 87% for those devices that malfunctioned or lost data. Conclusions. There is a need for low-cost, easy-to-use, accurate PA tracking devices to use as both intervention and assessment tools in health promotion research related to PA.

Identify Finger Rotation Angles With ArUco Markers and Action Cameras

2021 ◽  
Author(s):  
Tianyun Yuan ◽  
Yu (Wolf) Song ◽  
Gerald A. Kraan ◽  
Richard H. M. Goossens
Keyword(s):  
Dynamic Time Warping ◽  
Tracking System ◽  
Low Cost ◽  
Finger Joint ◽  
Hand Tracking ◽  
Human Hand ◽  
Time Warping ◽  
Joint Rotation ◽  
Dynamic Time ◽  
The Right

Abstract Measuring the motion of human hand joints is a challenging task due to the high number of DOFs. In this study, we proposed a low-cost hand tracking system built on action cameras and ArUco markers to measure finger joint rotation angles. The lens distortion of each camera was corrected first via intra-calibration and the videos of different cameras were aligned to the reference camera using a dynamic time warping based method. Two methods were proposed and implemented for extracting the rotation angles of finger joints: one is based on the 3D positions of the markers via inter-calibration between cameras, named pos-based method; the other one is based on the relative marker orientation information from individual cameras, named rot-based method. An experiment was conducted to evaluate the effectiveness of the proposed system. The right hand of a volunteer was included in this practical study, where the movement of the fingers was recorded and the finger rotation angles were calculated with the two proposed methods, respectively. The results indicated that although using the rot-based method may collect less data than using the pos-based method, it was more stable and reliable. Therefore, the rot-based method is recommended for measuring finger joint rotation in practical setups.

Paperometer: A Low-Cost Incentive Spirometer

2020 ◽  
Author(s):  
Shonit Nair Sharma ◽  
Devrina Chidambaram ◽  
Gianna Mizzi ◽  
Daniel Rosen ◽  
Kristin Slaughter ◽  
...  
Keyword(s):  
Lung Function ◽  
Medical Devices ◽  
Low Cost ◽  
Environmental Friendliness ◽  
Global Pandemic ◽  
Innovative Solution ◽  
Repeated Use ◽  
Functional Prototype ◽  
The Cost ◽  
Respiratory Rehabilitation

Abstract As a preemptive response to the widespread need for respiratory medical devices developing in the wake of the COVID-19 pandemic, we propose a low-cost incentive spirometer for respiratory rehabilitation in patients with reduced lung function. An incentive spirometer manufactured entirely out of recyclable material, termed “Paperometer,” aims to address the multifaced problem of medical device inaccessibility: high cost, lack of user- or environmental-friendliness, and unavailability to those who need them the most. Operating in accordance with governing physical formulae including Ohm’s law and the Hagen-Poiseuille equation, Paperometer is intended to improve the user’s lung function through repeated use of the device, which facilitates slow, deep breaths of air. Several prototypes were created based on a list of design criteria established through background research and stakeholder interviews. From four initial prototypes, all created predominantly from simple foldable geometries, one design was selected for further iteration. The most promising functional prototype was crafted from recyclable plastic and paper folded into various shapes including a box, tube, and pinwheel. The Paperometer concept stands as an innovative solution to reduce the cost and environmental burden of meeting the demand for medical devices. Once validated, the device may serve as an important tool in combating the ongoing global pandemic.

Clinical Trial of a Novel Starch-Based Adhesive Bandages for Medical Dressing

2020 ◽  
Vol 990 ◽  
pp. 96-100
Author(s):  
Sittiporn Punyanitya ◽  
Banyong Khantawa ◽  
Sakdiphon Thiansem ◽  
Rungsarit Koonawoot ◽  
Phanlob Chankachang ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Medical Devices ◽  
Raw Materials ◽  
Low Cost ◽  
International Standards ◽  
Preparation Methods ◽  
Safety And Efficacy ◽  
Plastic Components ◽  
Adhesive Bandage ◽  
Novel Starch

A typical adhesive bandage comprises of four main parts; the backing is often made of plastic; the adhesive sheet is usually plastic; the adhesive is commonly acrylate; the absorbent pad is often made of cotton. This adhesive bandages are made from starch based adhesive and natural paper, which have no plastic components. A starch-based adhesive bandages are tested on 100 volunteers and the result shows good performances with high confident of safety and efficacy. The raw materials and preparation methods are low cost, easily reproducible and eco-friendly, according to the international standards of medical devices regulation.

Towards a Broad Use of Gamification Based on Hand Tracking in Post Stroke Patients

2019 ◽  
Author(s):  
Daniele Regazzoni ◽  
Andrea Vitali ◽  
Caterina Rizzi
Keyword(s):  
Motion Tracking ◽  
Daily Life ◽  
Low Cost ◽  
Research Work ◽  
Medical Personnel ◽  
Ease Of Use ◽  
Hand Tracking ◽  
Rehabilitation Programs ◽  
Patient Side ◽  
At Home

Abstract In the last years, the advent of innovative technologies for tracking human motions is increasing the interest of physicians and physiotherapist, who would like to introduce new instruments for a more objective assessment of the rehabilitation processes. At present, many motion tracking systems have been developed and their ease of use and low-cost may represent the key aspects for which these systems could be really adopted both in rehabilitation centers and in rehabilitation programs at home. Several research studies confirmed the importance of continuing rehabilitation programs at home with the aim to maintain patients’ health condition at a suitable level for daily life activities. Physicians and physiotherapists need methods and tools, which can be simply adaptable for each type of patients’ category and type of rehabilitation according to the assessed pathology. For achieving this need, the technology has to be suitable for both the patient side and medical personnel side. The most suitable technology for the patients are motion tracking devices which can be used through traditional IT, such as laptops, smartphones and tablets. Also for medical personnel the ease of use is very important, physicians would like to check the patient’s rehab exercises according to their medical knowledge by exploiting daily life technology. This research work investigates on which are the best user-friendly programming tools and low-cost technology for 3D hand and finger tracking for the development of a serious game for rehabilitation exercises. The tasks are designed according to physiotherapists’ recommendations, in order to be customizable for any single user. The following sections will describe the method, the tools adopted, and the application developed.

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