Smart Tourniquet Real-Time Feedback Occlusion Detection
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Solution Overview
Problem
Despite training initiatives, a significant proportion of tourniquets are misapplied, leading to delayed hemorrhage control and increased trauma-related morbidity and mortality, as existing tourniquets lack real-time feedback for proper application and arterial occlusion detection.
Innovation Solution
A 'smart' tourniquet device with a fastening strap, tourniquet tightener, and control module that provides real-time audio and visual feedback for proper application, includes sensors to detect arterial occlusion, and initiates a timer to monitor occlusion duration, ensuring effective blood flow occlusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional tourniquets are used without feedback mechanisms, then the device structure remains simple, but the reliability of proper application and arterial occlusion detection is insufficient
Solution Approach 1:
The patent implements feedback mechanisms through sensors that detect arterial occlusion and provide real-time information to the user. The sensor system monitors blood flow parameters and provides feedback signals (visual, audio, or haptic) to confirm proper tourniquet application and arterial occlusion, thereby improving reliability without requiring complex manual assessment procedures
Solution Approach 2:
The tourniquet system performs self-monitoring of arterial occlusion through integrated sensors that automatically detect when occlusion is achieved. The system self-confirms proper application through automated detection algorithms and provides self-guided feedback to the user, reducing the need for external monitoring equipment or complex manual verification procedures
2Ease of operation
If real-time feedback mechanisms are added to guide proper application, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The patent provides real-time feedback during the application process through sensors that monitor tightening force and arterial occlusion status. The system delivers step-by-step guidance via visual displays, audio prompts, or haptic feedback, enabling users to confidently achieve proper application without requiring extensive training or complex manual assessment skills
Solution Approach 2:
The patent replaces manual mechanical assessment of arterial occlusion (requiring skill and judgment) with electronic sensor-based detection. The sensor system automatically measures blood flow parameters and translates them into user-friendly feedback signals, substituting complex human mechanical assessment with simpler electronic detection and communication systems
3Measurement precision
If sensors and control modules are integrated into the tourniquet, then the measurement precision of arterial occlusion detection is improved, but the device complexity and weight increase
Solution Approach 1:
The tourniquet system performs self-monitoring of arterial occlusion through integrated sensors that automatically detect and continuously monitor blood flow parameters. The system self-confirms proper application through automated detection algorithms, eliminating the need for external monitoring equipment or complex manual verification procedures by subsequent caregivers
Solution Approach 2:
The sensor system serves multiple functions: detecting arterial occlusion, monitoring blood flow parameters, providing feedback to the user, and recording data for subsequent caregivers. This multi-functionality consolidates what would otherwise require separate devices into a single integrated system, improving measurement precision without proportionally increasing overall device complexity
4Loss of information
If a timer and information display are added to monitor occlusion duration, then the loss of information is reduced, but the device complexity increases
Solution Approach 1:
The patent automatically initiates and continuously updates a timer as soon as arterial occlusion is detected, pre-preparing critical information for subsequent caregivers. The system proactively collects and stores application time, occlusion duration, and sensor data before handoff to medical professionals, eliminating the need for manual timing or note-taking and ensuring no critical information is lost or forgotten
Data Source
AI summary
A “smart” tourniquet device includes a fastening strap, a tourniquet tightener and a control module carried on the fastening strap. The control module includes a controller, an information display, an indicator and a power source. The “smart” tourniquet device may be used in a method of occluding blood flow through a body part, to reduce trauma related morbidity and mortality.