Wearable Sensor Device for Pressure Ulcer Prevention
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Solution Overview
Problem
Current systems for managing pressure ulcers lack the ability to reliably detect compromised tissue perfusion and optimize surface pressure at specific regions of the body, leading to inadequate prevention and treatment of pressure-induced ischemia and ulcers.
Innovation Solution
A system that uses sensors to monitor patient position, orientation, and movement, and communicates with a host system to optimize surface pressure at sites of compromised tissue perfusion, employing body surface markers and various sensing technologies such as accelerometers, pressure sensors, and resistive sensors to selectively modulate pressure and promote blood circulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current pressure ulcer management systems are used, then general pressure monitoring is provided, but the ability to detect compromised tissue perfusion and optimize surface pressure at specific regions is insufficient
Solution Approach 1:
The patent applies local quality by using body surface markers positioned at specific anatomical locations (sacrum, heels, hips, elbows) to enable region-specific pressure monitoring and optimization. Each marker location corresponds to a high-risk area for pressure ulcers, allowing the system to tailor pressure management to local tissue perfusion needs rather than applying uniform monitoring across the entire body surface.
Solution Approach 2:
The patent uses body surface markers as intermediaries between the patient's body and the sensor system. These markers serve as mediators that facilitate accurate localization of pressure measurement points and enable the sensor system to identify and monitor specific high-risk regions. The markers act as a bridge that connects anatomical landmarks with electronic sensing capabilities, improving both detection precision and optimization reliability.
2Reliability
If frequent patient repositioning is implemented to prevent pressure ulcers, then pressure relief is improved, but patient comfort and mobility may be reduced
Solution Approach 1:
The patent implements feedback by continuously monitoring pressure distribution through body surface markers and sensor systems, then using this information to determine optimal repositioning timing and methodology. The system provides real-time feedback to caregivers about which regions require pressure relief and when repositioning should occur, enabling targeted interventions that prevent pressure ulcers while minimizing unnecessary patient movement. This feedback loop allows the system to balance prevention reliability with patient comfort by only triggering repositioning when and where needed.
3Ease of manufacture
If manual pressure monitoring and assessment methods are used, then implementation is simple, but detection accuracy and response time are insufficient
Solution Approach 1:
The patent applies universality by designing a multi-functional system where body surface markers serve multiple purposes: they mark anatomical landmarks for positioning, enable localization of pressure measurement points, facilitate identification of high-risk regions, and provide reference points for sensor alignment. This multi-functionality allows the system to achieve high detection accuracy without requiring separate components for each function, thereby maintaining implementation simplicity while dramatically improving measurement precision compared to manual methods.
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 prevents and treats pressure ulcers by optimizing surface pressure distribution, promoting healing and reducing the risk of new ulcers through real-time monitoring and automated or caregiver-guided interventions.
Implementation Method 1
A sensor, such as a multi-axial accelerometer, provides data representative of the patient's position, orientation, and movement
Implementation Method 2
employing body surface markers and various sensing technologies such as accelerometers, pressure sensors, and resistive sensors to selectively modulate pressure
Implementation Method 3
employing body surface markers and various sensing technologies such as accelerometers, pressure sensors, and resistive sensors
Data Source
AI summary
A system for monitoring medical conditions including pressure ulcers, pressure-induced ischemia and related medical conditions comprises at least one sensor adapted to detect one or more patient characteristic including at least position, orientation, temperature, acceleration, moisture, resistance, stress, heart rate, respiration rate, and blood oxygenation, a host for processing the data received from the sensors together with historical patient data to develop an assessment of patient condition and suggested course of treatment. In some embodiments, the system can further include a support surface having one or more sensors incorporated therein either in addition to sensors affixed to the patient or as an alternative thereof. The support surface is, in some embodiments, capable of responding to commands from the host for assisting in implementing a course of action for patient treatment. The sensor can include bi-axial or tri-axial accelerometers, as well as resistive, inductive, capacitive, magnetic and other sensing devices, depending on whether the sensor is located on the patient or the support surface, and for what purpose.