Studies in health technology and informatics
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Stud Health Technol Inform · Jan 1998
Development of the force-feedback model for an epidural needle insertion simulator.
The Ohio Supercomputer Center and the Department of Anesthesiology at the OSU Medical Center have developed a computer-based simulation system for use in training anesthesiology residents in the technique of placing a needle for an epidural block. Although the simulator has been well regarded, the fidelity of the haptic feedback is limited because it is based on subjective expert-user evaluation and not on objective model-based or data-based empirical methods. ⋯ However, the simulation must be able to accurately portray the force required to puncture each layer of tissue in order to feel realistic. The purpose of the research described in this paper was to devise a methodology for creating empirically based realistic force-feedback models for the epidural needle insertion procedure using MRI data and biomechanical data from materials testing.
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Stud Health Technol Inform · Jan 1998
An examination of the variables associated with the adoption of a computerized innovation (an operating room simulation model).
The purpose of this study was to describe the variables that influenced senior staff to decide to adopt (or reject) a computerized innovation (Operating Room Simulation Model) and to describe the decision process at four hospitals. Rogers' Innovation-Decision Process Model (1983) and Model of the Innovation Process in Organizations (1983) formed the conceptual framework for this study. ⋯ There were insufficient data to determine if a match existed between complexity, trialability and observability with adoption of the Model. The links between the organizational variables (agenda setting, matching, decision) and adoption of the OR Simulation Model were not conclusive.
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Arthroscopy has already become an irreplaceable method in diagnostics. The arthroscope, with optics and light source, and the exploratory probe are inserted into the knee joint through two small incisions underneath the patella. Currently, the skills required for arthroscopy are taught through hands-on clinical experience. ⋯ Currently, the main drawback of the developed simulator is the missing of haptic perception, especially of force feedback. In cooperation with the Department of Electro-Mechanical Construction at the Technical University Darmstadt a haptic display is designed and built for the VR arthroscopy training simulator. In parallel we developed a concept for the integration of the haptic display in a configurable way.