Wearable Sensor Orientation Display for Pressure Ulcer Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current systems for managing pressure ulcers lack the ability to reliably detect compromised tissue perfusion and optimize surface pressure at specific body regions, leading to inadequate prevention and treatment of pressure-induced ischemia and ulcers.
Innovation Solution
The development of sensing systems that utilize multi-axial accelerometers and body surface markers to monitor patient position, orientation, and movement, providing data for a host system to optimize surface pressure and redistribute pressure away from ischemic areas, thereby preventing and treating pressure ulcers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pressure management is implemented to prevent pressure ulcers, then tissue perfusion is improved, but the system complexity increases due to lack of reliable detection capabilities
Solution Approach 1:
The system divides the monitoring task into segments: accelerometers detect patient position and orientation, body surface markers identify specific body regions, and the host system processes this data to determine pressure risk. This segmentation allows reliable tissue perfusion detection without requiring a single complex device, as each component performs a specific function.
Solution Approach 2:
Body surface markers serve as intermediaries between the patient's body and the sensing system. These markers are placed on specific body regions to enable the host system to identify and monitor pressure-prone areas without direct contact with the skin, simplifying the detection mechanism while maintaining reliability.
2Measurement precision
If sensor-based monitoring is used to detect patient position and orientation, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The accelerometer system is designed to perform multiple functions: detecting patient position, determining orientation, and monitoring movement. This multi-functionality allows the same sensing components to provide comprehensive data for pressure ulcer prevention without requiring separate specialized devices for each measurement type.
Solution Approach 2:
Body surface markers create a simplified representation or 'copy' of the patient's body geometry and key anatomical landmarks. This copying approach allows the host system to track body region positions without complex 3D scanning or imaging systems, achieving precise position detection through simpler marker-based tracking.
3Object-affected harmful factors
If surface pressure optimization is implemented to redistribute pressure, then harmful factors are reduced, but system complexity increases due to lack of localized pressure control
Solution Approach 1:
The system implements feedback by continuously monitoring patient position and orientation data from accelerometers and body surface markers, then using this information to dynamically adjust pressure redistribution strategies. The host system processes real-time data to determine when and how to optimize surface pressure, creating a closed-loop control system that reduces pressure-induced harm without requiring overly complex hardware.
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 solution effectively detects compromised tissue perfusion and optimizes surface pressure, promoting increased blood circulation and airflow, which aids in the healing of existing pressure ulcers and prevents new ones from forming.
Implementation Method 1
sensing systems that utilize multi-axial accelerometers and body surface markers to monitor patient position, orientation, and movement
Data Source
AI summary
A user-wearable sensor device may be configured to be directly or indirectly secured to a user or to an article worn by the user. The user-wearable sensor device may include at least one sensor configured to collect sensor data associated with an orientation of the user, a display unit including at least one LED or other visual indicator, a battery configured to provide power to at least the display unit, and a control system. The control system may be configured to determine the orientation of the user based on sensor data collected by the at least one sensor, maintain the display unit in a deactivated state in the absence of a defined activation input, detect a defined activation input, activate the deactivated display unit in response to detecting the defined activation input, and control the activated display unit based on the determined orientation of the user.