Flexible Sensor Sheet for Blood Flow Disorder Detection
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Solution Overview
Problem
Current methods for detecting blood flow disorders in transplanted tissues, such as congestion and ischemia, are cumbersome, require technical expertise, and often lead to delayed detection, increasing the risk of tissue necrosis due to their reliance on visual observations, skin color changes, or oxygen level measurements, which are not applicable in all cases.
Innovation Solution
A flexible blood flow disorder detection device featuring a sensor sheet with multiple sensing sections that measure pulse waves, color, and temperature, allowing for reliable detection of blood flow information without mechanical stress on the tissue, enabling continuous monitoring and early detection of congestion and ischemia.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional methods (visual observation, skin color change, oxygen level measurement) are used to detect blood flow disorders, then detection can be performed with simple equipment, but detection reliability is insufficient and technical expertise is required
Solution Approach 1:
The patent combines multiple sensing sections (optical sensors, temperature sensors, pulse wave sensors) into a single integrated sensor sheet. This merging of multiple detection functions into one device improves detection reliability by capturing comprehensive blood flow information while maintaining ease of use through a unified application process.
Solution Approach 2:
The sensor sheet is designed to perform multiple detection functions simultaneously - measuring optical properties, temperature, and pulse waves - making it a universal monitoring device that can detect various blood flow disorders (congestion, ischemia, thrombosis) without requiring separate specialized equipment for each type of detection.
2Loss of time
If frequent manual checks are performed to detect blood flow disorders early, then detection timeliness improves, but labor burden increases significantly
Solution Approach 1:
The sensor sheet enables continuous automated monitoring of blood flow parameters without requiring intermittent manual intervention. The device continuously collects optical, temperature, and pulse wave data, automatically detecting blood flow disorders as they develop, thereby eliminating the need for frequent manual checks while maintaining early detection capability.
Solution Approach 2:
The system performs self-monitoring and automatic detection of blood flow disorders. Once applied, the sensor sheet autonomously collects data and detects abnormalities without requiring ongoing technical expertise or manual operation, allowing the monitoring function to serve itself continuously.
3Measurement precision
If compression methods are used to evaluate blood circulation, then blood flow state can be assessed, but mechanical stress is applied to the tissue
Solution Approach 1:
The patent replaces mechanical compression methods with non-contact optical sensing. Instead of applying physical pressure to assess blood flow, the device uses optical sensors to measure light absorption and reflection properties, temperature sensors to detect thermal changes, and pulse wave sensors to capture vascular pulsations - all without mechanical stress on the tissue.
Solution Approach 2:
The sensor sheet acts as an intermediary that indirectly measures blood flow parameters through optical, thermal, and mechanical wave properties rather than directly compressing the tissue. Light, heat, and sound waves serve as mediators to assess blood circulation without physical contact that could harm the tissue.
4Ease of operation
If simple visual observation methods are used, then ease of operation is maintained, but measurement precision deteriorates
Solution Approach 1:
The sensor sheet automatically performs measurements and detects abnormalities without requiring user expertise. The device self-calibrates and autonomously analyzes the collected data, providing accurate detection results while maintaining simplicity of operation - the user only needs to apply the sheet, and the system handles all complex analysis independently.
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 device provides highly reliable and continuous monitoring of blood flow disorders on curved surfaces, reducing the risk of delayed detection and tissue damage, allowing for early intervention and improved recovery rates without requiring extensive technical expertise.
Implementation Method 1
an optical sensor which measures pulse waves or heartbeats of blood flow and color of the transplanted living tissue
Implementation Method 2
a thermal sensor which measures temperature of the transplanted living tissue
Implementation Method 3
an acceleration sensor which measures acceleration in a direction perpendicular to a surface of the transplanted living tissue
Data Source
AI summary
A blood flow disorder detection device includes: a sensor sheet including a flexible substrate and a plurality of sensors provided on the flexible substrate; and an analyzer that analyzes outputs of the plurality of sensors. The plurality of sensors measure different types of blood flow information of a living tissue, the blood flow information being obtained by attaching the sensor sheet to the living tissue. The analyzer detects a blood flow disorder in the living tissue by analyzing the different types of blood flow information from the plurality of sensors.