The Experts below are selected from a list of 327 Experts worldwide ranked by ideXlab platform
Andrew Smith - One of the best experts on this subject based on the ideXlab platform.
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biofouling of surgical Power Tools during routine use
Journal of Hospital Infection, 2015Co-Authors: A. Deshpande, Gordon W G Smith, Andrew SmithAbstract:Surgical Power Tools (SPTs) are frequently used in many surgical specialties such as dentistry, orthopaedics, ophthalmology, neurology, and podiatry. They have complex designs that may restrict access to cleaning and sterilization agents and frequently become contaminated with microbial and tissue residues following use. Due to these challenges, surgical Power Tools can be considered the weak link in the decontamination cycle and present a potential for iatrogenic transmission of infection. We aimed to review the existing literature on the decontamination of surgical Power Tools and associated iatrogenic transmission of infection. A search of the medical literature was performed using Ovid online using the following databases: Ovid Medline 1950–2014, Embase 1980–2014, and EBM Reviews Full Text – Cochrane DSR, ACP Journal Club, and Dare. Despite challenges to decontamination processes, reported episodes of iatrogenic infection directly linked to SPTs appear rare. This may reflect a true picture but more likely represents incomplete reporting, failure to investigate Power Tools, or lack of surveillance linking surgical site infections (SSIs) to Power Tools. Healthcare professionals should be aware of the complexities associated with the decontamination of different SPTs, and should review manufacturers' reprocessing instructions prior to purchase. More clarity is required in the manufacturers' validation of these reprocessing instructions. This particularly applies to the emerging surgical robot systems that present extreme challenges to decontamination between uses. Investigation of cross-infection incidents or SSI surveillance should include an element of assessment of SPT decontamination to further elucidate the contribution of SPTs to skin and soft tissue infections.
A. Deshpande - One of the best experts on this subject based on the ideXlab platform.
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biofouling of surgical Power Tools during routine use
Journal of Hospital Infection, 2015Co-Authors: A. Deshpande, Gordon W G Smith, Andrew SmithAbstract:Surgical Power Tools (SPTs) are frequently used in many surgical specialties such as dentistry, orthopaedics, ophthalmology, neurology, and podiatry. They have complex designs that may restrict access to cleaning and sterilization agents and frequently become contaminated with microbial and tissue residues following use. Due to these challenges, surgical Power Tools can be considered the weak link in the decontamination cycle and present a potential for iatrogenic transmission of infection. We aimed to review the existing literature on the decontamination of surgical Power Tools and associated iatrogenic transmission of infection. A search of the medical literature was performed using Ovid online using the following databases: Ovid Medline 1950–2014, Embase 1980–2014, and EBM Reviews Full Text – Cochrane DSR, ACP Journal Club, and Dare. Despite challenges to decontamination processes, reported episodes of iatrogenic infection directly linked to SPTs appear rare. This may reflect a true picture but more likely represents incomplete reporting, failure to investigate Power Tools, or lack of surveillance linking surgical site infections (SSIs) to Power Tools. Healthcare professionals should be aware of the complexities associated with the decontamination of different SPTs, and should review manufacturers' reprocessing instructions prior to purchase. More clarity is required in the manufacturers' validation of these reprocessing instructions. This particularly applies to the emerging surgical robot systems that present extreme challenges to decontamination between uses. Investigation of cross-infection incidents or SSI surveillance should include an element of assessment of SPT decontamination to further elucidate the contribution of SPTs to skin and soft tissue infections.
Sven Matthiesen - One of the best experts on this subject based on the ideXlab platform.
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Meaningful Prediction Parameters for Evaluating the Suitability of Power Tools for Usage
Procedia CIRP, 2020Co-Authors: Sven Matthiesen, René GermannAbstract:Abstract During the usage of Power Tools, user and Power tool are interacting strongly with each other, which is why the working result depends heavily on the usability of a Power tool depending on the application (Suitability of Usage (SoU)). The optimization of Power Tools, in terms of the user-centered design, therefore aims at an increase of the SoU. So far, the acquisition of the SoU is done within broad application tests, with several users and different application situations. Hereby, problems occur because it is often difficult to find an adequate mix of professional trained participants, which are able to evaluate the SoU objectively. To investigate the differences between professional Power tool users and trained non-professional users, a study has been performed. In this study, 20 professional and 19 non-professional users tested Power Tools (cordless screwdrivers and impact wrenches, three different manufacturer each) and evaluated the handles of these systems according to fourteen test items, divided into an observation and a usage phase. By the use of statistical variance analysis, the captured data has been analyzed to investigate the influence on the evaluation through the usage experience of the users. Results indicates a strong influence within the evaluation categories where evaluations are done which rely on long term experiences, like the evaluation of the distributed force on the fingers. To produce further increase in efficiency and objectivity, a categorical regression by the use of Lasso models has been performed to identify the most meaningful influencing predictors for the SoU level. The investigation is carried out using the example of the evaluation of discomfort on the handle. Results indicates that the most meaningful predictor for the evaluation of the handle is the circumference of the handle at the position of the middle finger.
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Methodical Approach for the Analysis of the Active User Behavior during the Usage of Power Tools
2020Co-Authors: Sven MatthiesenAbstract:In the validation of Power Tools, the user must always be taken into account. In order to make the influences of the user in the tests as reproducible as possible, these influences must be modelled on test stands. Until now, there was no method by which the necessary input variables could be measured and processed accordingly. In this article a developed method is shown and verified using an orbit sander.
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Recognizing Product Application based on Integrated Consumer Grade Sensors: A Case Study with Handheld Power Tools
Procedia CIRP, 2020Co-Authors: Matthias Dörr, Maximilian Ries, Thomas Gwosch, Sven MatthiesenAbstract:Abstract As more and more consumer grade sensors are integrated into products such as handheld Power Tools, data acquisition is becoming more affordable. The product development process benefits greatly from the knowledge of the incidence and the relevance of applications performed by a user. Using the collected sensor data remains a challenge due to the noise caused by the consumer grade sensors and the complexity of the applications. In this study, the use of machine learning on time series to identify which predefined applications a user performed with a Power tool, using an angle grinder and a cordless screwdriver as example, is explored. An acceleration sensor, a rotation rate sensor, a geomagnetic sensor and a current sensor were used for data acquisition. We tested two sampling rates and two approaches of feature extraction: An effectively off-the-shelf method of feature extraction and an expert-tuned extraction of the features. The study shows that both methods achieve very good results within existing data sets (>95% accuracy). When applied to new experiments, overfitting occurs due to the complexity of the application and the noise of the consumer-grade sensors. Thus, this study shows first promising results and further potentials for the future application of machine learning for the recognition of applications in products such as handheld Power Tools.
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Objective Usability Evaluation of Power Tools under Consideration of the User Experience [in press]
Applied Ergonomics, 2020Co-Authors: Sven Matthiesen, René Germann, Björn JahnkeAbstract:During validation of Power Tools, one objective is to determine the usability of the device for several applications. A common way to gain this user knowledge is to carry out tests under laboratory conditions with non-professional craftsmen. Problems occurs due to the fact, that a non-professional user does not work and evaluate a Power tool similarly to a professional. Therefore an experimental study was conducted to investigate the possibility of training non-professionals in the professional working methods and the evaluation of relevant key criteria for drywall screwdrivers. Application study was performed to gain relevant usage knowledge. 39 subject were divided in three groups and trained in the professional use of a drywall screwdriver to a various extend. Results indicates that targeted training improve the professional way of working and evaluating especially in activities in which the focus is on the working posture and the way the Power tool is handled.
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The influence of variating passive user interactions on Power Tools in the context of product development
Forschung Im Ingenieurwesen-engineering Research, 2018Co-Authors: Sven Matthiesen, S. Mangold, Tim BruchmuellerAbstract:Comparing different development variants under same test conditions with the help of test rigs is one success factor within the Power tool development process. One question in test rig design is about the necessity to model variating user’s biodynamic response within such test rigs. The objective of this contribution is to reveal the main influential factors on user’s biodynamic response which have to be included in test rig design for Power Tools. Therefore, this article presents a qualitative study to give indications for the relevance of user, posture, grip and push force on Power tool’s behavior. It is shown that different user’s biodynamic response leading to different vibration levels at a hammer drill’s and impact driver’s handle. While assuming that any kind of vibration level influenced by the user’s biodynamic response will directly lead to different interactions of the technical subsystems inside the Power tool, it is stated that variation of user’s biodynamic response has to be taken into account when designing test rigs for Power tool development.
Gordon W G Smith - One of the best experts on this subject based on the ideXlab platform.
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biofouling of surgical Power Tools during routine use
Journal of Hospital Infection, 2015Co-Authors: A. Deshpande, Gordon W G Smith, Andrew SmithAbstract:Surgical Power Tools (SPTs) are frequently used in many surgical specialties such as dentistry, orthopaedics, ophthalmology, neurology, and podiatry. They have complex designs that may restrict access to cleaning and sterilization agents and frequently become contaminated with microbial and tissue residues following use. Due to these challenges, surgical Power Tools can be considered the weak link in the decontamination cycle and present a potential for iatrogenic transmission of infection. We aimed to review the existing literature on the decontamination of surgical Power Tools and associated iatrogenic transmission of infection. A search of the medical literature was performed using Ovid online using the following databases: Ovid Medline 1950–2014, Embase 1980–2014, and EBM Reviews Full Text – Cochrane DSR, ACP Journal Club, and Dare. Despite challenges to decontamination processes, reported episodes of iatrogenic infection directly linked to SPTs appear rare. This may reflect a true picture but more likely represents incomplete reporting, failure to investigate Power Tools, or lack of surveillance linking surgical site infections (SSIs) to Power Tools. Healthcare professionals should be aware of the complexities associated with the decontamination of different SPTs, and should review manufacturers' reprocessing instructions prior to purchase. More clarity is required in the manufacturers' validation of these reprocessing instructions. This particularly applies to the emerging surgical robot systems that present extreme challenges to decontamination between uses. Investigation of cross-infection incidents or SSI surveillance should include an element of assessment of SPT decontamination to further elucidate the contribution of SPTs to skin and soft tissue infections.
Franziska Frankfurter - One of the best experts on this subject based on the ideXlab platform.
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Official Kais Power Tools Studio Secrets
2020Co-Authors: Franziska FrankfurterAbstract:Thank you for downloading official kais Power Tools studio secrets. Maybe you have knowledge that, people have search numerous times for their favorite books like this official kais Power Tools studio secrets, but end up in malicious downloads. Rather than enjoying a good book with a cup of coffee in the afternoon, instead they are facing with some harmful bugs inside their laptop. official kais Power Tools studio secrets is available in our book collection an online access to it is set as public so you can download it instantly. Our books collection hosts in multiple countries, allowing you to get the most less latency time to download any of our books like this one. Merely said, the official kais Power Tools studio secrets is universally compatible with any devices to read.
