Benefits of PPGWhy is it necessary? Who do they benefit?
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Our GoalPPG serves as a means of quantifying prosthetic fit for amputee patients. Traditionally, fit is qualitatively assessed, but less obvious issues often get overlooked, particularly over the long term. By utilizing PPG to obtain quantitative hemodynamic data from patients, we will provide a more accurate mechanism for assessing prosthetic fit and overall patient health.
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Is it Necessary?Improper prosthetic fit can not only be uncomfortable for the patient, but also lead to serious health problems such as tissue damage. Often, the disorder underlying the amputation can have effects that increase likelihood of skin tissue breakdown at the limb-prosthetic interface. Diseases such as diabetes or neurological disorders can further impair patients' pain sensation, making it even more difficult to qualitatively assess prosthetic fit.
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The Need for a Flexible Solution
The First Generation - Rigid PPG DeviceThe initial design of a PPG device for amputees involved a rigid plastic casing. It was rigorously validated in its measurement capabilities and shown to work effectively along flat surfaces. However, within a prosthetic sleeve, the device would ultimately be unable to fit along organic curves, resulting in potentially damaging patient discomfort and skin irritation.
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The Second Generation - Flexible PPG DeviceThe second generation design of the PPG involves a flexible design using a more pliable encasement and flex circuitry. This permits it to be placed along more surfaces and can easily fit and be adjusted within a prosthetic sleeve.
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Page credit: Michael Nacinopa