Hand-Product Contact Point Detection on Surgical Instruments – A User Evaluation

2019 ◽  
Vol 27 (4) ◽  
pp. 14-21
Author(s):  
Álvaro M. Sampaio ◽  
Paulo Simões ◽  
Pedro Arezes ◽  
António J. Pontes
Keyword(s):  
Medical Devices ◽  
Contact Point ◽  
Evaluation Study ◽  
Surgical Instruments ◽  
User Evaluation ◽  
Hand Tools ◽  
Contact Areas ◽  
Ensure Patient Safety ◽  
Key Factor ◽  
Point Detection

The interaction of hand tools with the user is crucial and a key factor for his or her performance. In specific medical devices like surgical instruments, it is also important to ensure patient safety, namely, to avoid the risk of a surgical instrument’s being left inside a body. This article investigates the patterns of hand-to-product contact areas by identifying the potential locations to couple an external add-on tracing device on surgical instruments. A user evaluation study was conducted to determine the contact areas between the surgeons’ hands and different surgical instruments. The methodology, the results, and a discussion are described below.

scholarly journals A review of the bio-tribology of medical devices

Friction ◽  
2021 ◽  
Author(s):  
Xiaogang Zhang ◽  
Yali Zhang ◽  
Zhongmin Jin
Keyword(s):  
Service Life ◽  
Medical Devices ◽  
Tribological Behavior ◽  
Tribological Performance ◽  
Dental Restoration ◽  
Surgical Instruments ◽  
Cardiovascular Devices ◽  
Artificial Joints ◽  
Future Developments ◽  
Fixation Devices

AbstractNumerous medical devices have been applied for the treatment or alleviation of various diseases. Tribological issues widely exist in those medical devices and play vital roles in determining their performance and service life. In this review, the bio-tribological issues involved in commonly used medical devices are identified, including artificial joints, fracture fixation devices, skin-related devices, dental restoration devices, cardiovascular devices, and surgical instruments. The current understanding of the bio-tribological behavior and mechanism involved in those devices is summarized. Recent advances in the improvement of tribological properties are examined. Challenges and future developments for the prospective of bio-tribological performance are highlighted.

scholarly journals Experimental Measurements of Mechanical Properties of PUR Foam Used for Testing Medical Devices and Instruments Depending on Temperature, Density and Strain Rate

Materials ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 4560 ◽  
Author(s):  
Zdenek Horak ◽  
Karel Dvorak ◽  
Lucie Zarybnicka ◽  
Hana Vojackova ◽  
Jana Dvorakova ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Strain Rate ◽  
Mechanical Testing ◽  
Medical Devices ◽  
Optical Microscope ◽  
Surgical Instruments ◽  
Effect Of Temperature ◽  
Experimental Measurements ◽  
Compression Tests ◽  
Biomedical Material

Rigid polyurethane (PUR) foam is products used as a biomedical material for medical device testing. Thermal stability is a very important parameter for evaluating the feasibility of use for testing surgical instrument load during drilling. This work aimed to perform experimental measurements to determine the dependence of the mechanical properties of a certified PUR on temperature, strain rate and density. Experimental measurements were realised for three types of the PUR samples with different density 10, 25 and 40 pounds per cubic foot. The samples were characterised in terms of their mechanical properties evaluated from tensile and compression tests at temperatures of 25 °C, 90 °C and 155 °C. Furthermore, the structures of the samples were characterised using optical microscope, their thermal properties were characterised by thermogravimetric analysis, and their density and stiffness with the effect of temperature was monitored. The results show that it is optimal not only for mechanical testing but also for testing surgical instruments that generate heat during machining. On the basis of experimental measurements and evaluations of the obtained values, the tested materials are suitable for mechanical testing of medical devices. At the same time, this material is also suitable for testing surgical instruments that generate heat during machining.

scholarly journals Semantic Priming of Colored Signs in the Peripheral Vision during Electronic Text Reading

2020 ◽  
Vol 4 (2) ◽  
pp. 28
Author(s):  
Snežana Stupar-Rutenfrans ◽  
Jaap Elzes ◽  
John van den Elst
Keyword(s):  
Semantic Priming ◽  
Peripheral Vision ◽  
Visual Display ◽  
Evaluation Study ◽  
Electronic Text ◽  
User Evaluation ◽  
The Novel ◽  
Ambient Light ◽  
Text Reading ◽  
Reading Assignment

This study explores if peripheral colored ambient light or colored light can be noticed and semantically associated with text while reading a novel from an Electronic Visual Display (EVD). Additionally, it is investigated if those colored signs are perceived as supplementary to the story and result in a more immersive experience. For that purpose, a user evaluation study was performed based on attention theory (selective attention, semantic priming, and divided attention), reading behavior, and semantics of colors. Participants received a reading assignment. While reading a novel from an e-book, dynamic colored ambient light or colored light was emitted. Throughout the reading assignment, the colors were adapted to the particular scenes the participant was reading. Findings suggest that attention can be divided between reading the novel from an EVD and the ambient color signs.

scholarly journals iCompose: context-aware physical user interface for application composition

2011 ◽  
Vol 1 (4) ◽  
Author(s):  
Oleg Davidyuk ◽  
Ekaterina Gilman ◽  
Iván Milara ◽  
Jussi Mäkipelto ◽  
Mikko Pyykkönen ◽  
...  
Keyword(s):  
Mobile Devices ◽  
Evaluation Study ◽  
User Acceptance ◽  
User Evaluation ◽  
Context Aware ◽  
Dynamic Nature ◽  
Everyday Objects ◽  
Everyday Activities ◽  
Computing Environments ◽  
Ubiquitous Computing Environments

AbstractUbiquitous computing environments advocate creating applications by plugging together various resources (mobile devices, displays, augmented everyday objects, and so on) and Web Services to support the user’s everyday activities and needs. This approach is referred to as application composition, and such applications are called composite. Due to the dynamic nature of ubiquitous environments, application composition has to be supported at runtime, so that the applications are able to adapt to the situation within the environment and other contexts. Application composition is usually performed by autonomous context-aware mechanisms that provide limited or no control for users. Still, users need to be aware of their environments and be able to control and configure applications when they are composed and executed. Towards this goal we present in this article a context-aware application composition system based on the iCompose interface for composing and controlling applications at runtime. Users compose applications by simply touching the resources in the environment with their mobile devices, while the iCompose interface provides feedback and assists users by suggesting them possible further actions. The interface relies on a rule-based reasoner and utilizes various context sources to support users dynamically, according to the situation in which they compose applications. We present a complete implementation of the system and report the results of a user evaluation study conducted with 21 participants. This study assesses the issues of control, usability, feasibility and user acceptance of the iCompose interface for context-aware application composition and the prototype as a whole.

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