Pressure Sensor Support Surface for Ulcer Risk Detection
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Solution Overview
Problem
Current technologies for preventing and managing pressure ulcers are inadequate, as they lack reliability and accuracy in detecting risk and promoting effective interventions, leading to prolonged healing times, complications, and high treatment costs.
Innovation Solution
A sensor and decision support system that uses a support surface with a pressure sensor component to monitor and analyze movement patterns, determining the likelihood of pressure ulcers by analyzing pressure power spectra and providing notifications or interventions to prevent tissue breakdown and promote healing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If voluntary reporting systems and cross-sectional surveys are used to collect pressure ulcer data, then data collection is simple and low-cost, but the accuracy and reliability of the data are poor due to under-reporting and inaccurate information
Solution Approach 1:
The patent replaces manual voluntary reporting systems with an automated sensor-based measurement system. Pressure sensors, accelerometers, and other detectors continuously collect objective data on patient position, pressure distribution, and movement, eliminating reliance on human memory and voluntary reporting. This substitution of mechanical/automated systems for manual processes directly improves measurement precision while the modular sensor design keeps system complexity manageable.
2Loss of time
If retrospective reviews of medical records are conducted to identify risk factors, then comprehensive patient information can be obtained, but the process is time-consuming and cannot provide real-time prevention
Solution Approach 1:
The system performs preliminary assessment of pressure ulcer risk continuously by monitoring patient position, movement patterns, and pressure distribution in real-time. Rather than waiting for retrospective medical record reviews, the sensors proactively identify at-risk patients and trigger alerts before pressure ulcers develop. This preliminary action eliminates time delays while maintaining comprehensive risk factor detection through continuous multi-parameter monitoring.
Solution Approach 2:
The patent implements continuous monitoring of pressure distribution, patient movement, and positional changes using wearable and bed-integrated sensors. This continuous data collection provides uninterrupted assessment of pressure ulcer risk factors, replacing intermittent retrospective reviews with ongoing real-time evaluation. The continuous action ensures no risk factors are missed and enables immediate intervention when dangerous conditions are detected.
3Reliability
If intensive treatments and prolonged monitoring are applied to severe pressure ulcer cases, then patient outcomes can be improved, but healthcare costs increase significantly and hospitalization time is prolonged
Solution Approach 1:
The system prevents the need for intensive treatments by continuously monitoring pressure distribution and patient movement to identify at-risk conditions before pressure ulcers develop. By taking preliminary preventive actions such as alerting caregivers to reposition patients or adjust support surfaces, the system avoids the development of severe ulcers that would require costly and resource-intensive treatments, thereby improving outcomes while reducing healthcare resource consumption.
Solution Approach 2:
The patent implements a feedback loop where sensors continuously monitor pressure distribution and patient position, compare readings against risk thresholds, and provide real-time alerts to caregivers when dangerous conditions are detected. This feedback enables timely interventions that prevent pressure ulcer progression, improving patient outcomes while avoiding the need for prolonged intensive treatments and reducing overall healthcare resource utilization.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively reduces the risk of pressure ulcers by providing timely interventions, shortening healing times, and reducing the incidence of complications, thereby improving patient outcomes and reducing healthcare costs.
Implementation Method 1
a pressure sensor component designed to obtain pressure-related measurements due to force applied by a patient
Data Source
AI summary
Technologies are provided for determining a likelihood or risk of a human patient for developing pressure injury based on patterns of movement by the patient determined using a specialized measurement support surface. Some embodiments automatically ascertain whether patterns of movements of a human subject, whose weight is supported on the support surface, exhibit sufficient frequency and variability of activity such as will confer either certain health benefits or expose the individual to certain health risks, such as development of pressure ulcers in the load-bearing skin and soft tissues. The measurement support surface can include a contact layer, a pressure-measuring layer having an air bladder subjacent to the measurement support surface, and a substrate layer with a density and stiffness to mechanically isolate the pressure-measuring layer from ambient vibrations transmitted through a floor, furniture, or other intervening articles upon which the measurement support surface is mounted.