This design paper describes the development of custom built interface between a force-replicating virtual reality (VR) haptic interface glove, and a user. The ability to convey haptic information – both kinematic and tactile – is a critical barrier in creating comprehensive simulations. Haptic interface gloves can convey haptic information, but often the haptic “signal” is diluted by sensory “noise,” miscuing the user’s brain. Our goal is to convey compelling interactions – such as grasping, squeezing, and pressing – with virtual objects by improving one such haptic interface glove, the SenseGlove, through a redesign of the user-glove interface, soft glove. The redesign revolves around three critical design factors – comfort, realism, and performance – and three critical design areas – thimble/fingertip, palm, and haptic feedback. This paper introduces the redesign method and compares the two designs with a quantitative user study. The benefit of the improved soft glove can be shown by a significant improvement of the design factors, quantified through QUESI, NASA-TLX, and comfort questionnaires.
It is well known that hyperosmolar hyperglycemic state (HHS) can lead to hypertriglyceridemia (HTG), and that HTG can lead to acute pancreatitis. However, few case reports exist of these three conditions occurring simultaneously. In this case report, we describe a 49-year-old female with a past medical history of well-controlled hypertension who presented to the emergency department with abdominal pain and hematemesis after being found minimally responsive at home. Labs and imaging on admission were consistent with acute pancreatitis in the setting of severe HTG. She also had a significantly elevated glucose and serum osmolality consistent with HHS. We suggest the patient had HHS that led to an HTG severe enough to cause acute pancreatitis. These findings may provide insight into HHS as an important predisposing condition to acute pancreatitis.
After decades of research and development, haptic feedback is increasingly appearing in consumer products. While the prevalence of haptic feedback is increasing, the integration rarely offers increased fidelity to previous generations. We argue this is because of the tremendous complexity of successful haptic design engineering, but critically, also because of information saturation. With novel cutaneous feedback technologies and companies emerging almost daily, the multi-disciplinary nature of haptics and the marketing-driven terminology used to stand out in a crowded market makes it challenging to select and integrate actuators correctly.To manage this complexity and facilitate the interdisciplinary exchange of user requirements and material affordances, we introduce a novel classification criterion for haptic actuators focused on the bandwidth and fidelity of potential effects. We introduce vocabulary for describing the precise experience the actuators and corresponding systems should deliver. This same criterion and language can also prove valuable for steering nearfuture technology development of new and improved actuators and enabling novice and experienced practitioners to understand and integrate cutaneous feedback in their products.
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