Iron Selective Conductive Circuit for Hemorrhage Detection
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Solution Overview
Problem
Traditional medical monitoring devices lack a standardized, data-driven method for detecting bleeding-related events such as hemorrhages, leading to increased risks, especially in high-risk patients like those undergoing cesarean section procedures, where timely detection is critical.
Innovation Solution
A sensing device with a blood selective layer and an iron selective conductive circuit, supported by a permeable film, which determines impedance changes in response to blood presence or amount, generating an alert signal to notify caregivers and potentially modify connected systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional medical monitoring devices are used, then device complexity is reduced, but hemorrhage detection reliability is insufficient
Solution Approach 1:
The sensing device is divided into multiple functional layers including a blood selective layer with iron-selective conductive circuit, a diversion layer, an absorption layer, and a hydrophobic layer. Each layer performs a specific function in the blood detection process, allowing the complex detection mechanism to be modularized and managed through segmentation.
Solution Approach 2:
The device detects hemorrhage by monitoring changes in electrical impedance parameters of the iron-selective conductive circuit. When blood contacts the circuit, the impedance changes due to the presence of iron in hemoglobin, providing a reliable detection mechanism through parameter transformation from physical contact to electrical signal.
2Measurement precision
If blood selective layer with iron selective conductive circuit is used, then measurement precision of blood amount is improved, but device complexity increases
Solution Approach 1:
The iron-selective conductive circuit utilizes the magnetic properties of iron in blood to detect presence and amount. The circuit's electrical characteristics change in response to iron content, providing a precise measurement mechanism that leverages the unique chemical composition of blood rather than requiring complex visual or mechanical systems.
Solution Approach 2:
The device replaces complex mechanical or optical blood measurement systems with an electrical impedance-based detection method. The iron-selective conductive circuit converts the chemical presence of iron into an electrical signal, simplifying the measurement mechanism while maintaining high precision through parameter transformation.
3Reliability
If multi-layer structure with diversion and absorption layers is used, then blood detection reliability is improved, but manufacturing complexity increases
Solution Approach 1:
The multi-layer structure is segmented into distinct functional layers (blood selective, diversion, absorption, hydrophobic), where each layer can be optimized and manufactured independently before assembly. This segmentation allows specialized manufacturing processes for each layer while maintaining overall system reliability.
Solution Approach 2:
The diversion layer and absorption layer serve multiple functions: they manage fluid distribution, protect the sensitive conductive circuit, control blood flow patterns, and extend device functionality. This multi-functionality reduces the need for additional separate components, potentially simplifying the overall manufacturing process despite the layered structure.
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 reliable, timely detection of hemorrhages, reducing risks by accurately determining blood presence and amount, and can be integrated into medical procedures to improve patient safety and care.
Implementation Method 1
determine an impedance (e.g., a speed of impedance change and/or time required for the impedance to change/meet an associated threshold) of the iron selective conductive circuit responsive to blood received by the blood selective layer
Data Source
AI summary
Devices, apparatuses, methods, and computer program products are provided for hemorrhage detection. An example sensing device for hemorrhage detection includes a blood selective layer that includes a permeable film and an iron selective conductive circuit supported by the permeable film. The sensing device further includes a controller operably coupled with the blood selective layer. The controller is configured to supply a current to the iron selective conductive circuit, determine an impedance of the iron selective conductive circuit responsive to blood received by the blood selective layer, and determine an amount of blood received by the blood selective layer based upon the determined impedance. The controller may further compare the determined impedance with an alert threshold and generate an alert signal in an instance in which the determined impedance satisfies the alert threshold.