Ventricular Assist System Eddy Current Sensor
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Solution Overview
Problem
Current ventricular assist devices require frequent hospital visits for ultrasound diagnostics, making it time-consuming and costly to monitor ventricular blood flow and adjust pumping speed, which can be detrimental in case of adverse reactions.
Innovation Solution
A ventricular assist system with a ventricular state sensor using eddy current induction measurement to detect ventricular contraction/relaxation and dynamically adjust device parameters, enabling real-time monitoring and non-invasive, non-contact feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If cardiac ultrasound is used to monitor ventricular blood flow, then measurement precision is improved, but device complexity and loss of time increase due to requiring hospital visits and professional operators
Solution Approach 1:
The patent replaces the mechanical ultrasound imaging system with an electromagnetic sensing system. The sensor uses eddy current induction to detect ventricular contraction and relaxation through electromagnetic fields, eliminating the need for mechanical ultrasound transducers and complex imaging equipment while maintaining measurement capability.
Solution Approach 2:
The patent introduces an electromagnetic field as an intermediary between the sensor and the ventricle. The coil generates electromagnetic fields that interact with the conductive blood and heart tissue to detect ventricular state, serving as a non-contact mediator that simplifies the monitoring system compared to direct mechanical ultrasound contact.
2Measurement precision
If cardiac ultrasound is used to monitor ventricular blood flow, then measurement precision is improved, but loss of time increases due to requiring regular hospital visits
Solution Approach 1:
The patent implements a feedback mechanism where the sensor continuously monitors ventricular contraction and relaxation, and the control module automatically adjusts the ventricular assist device parameters in real-time. This closed-loop feedback system eliminates the need for periodic manual monitoring and allows immediate response to changes in ventricular function.
Solution Approach 2:
The patent enables continuous monitoring of ventricular function through the implantable sensor that operates continuously without interruption. The electromagnetic sensing continues throughout the cardiac cycle and over time, providing uninterrupted data stream that eliminates the discontinuous periodic monitoring required by hospital visits.
3Reliability
If ventricular assist device parameters are adjusted manually based on hospital tracking, then reliability is improved through professional evaluation, but loss of time increases and adaptability decreases
Solution Approach 1:
The patent enables the ventricular assist device to self-adjust its parameters based on real-time ventricular state detection. The control module automatically modifies pump speed and other parameters without requiring manual intervention from healthcare professionals, allowing the device to adapt autonomously to changing ventricular conditions.
Solution Approach 2:
The patent transforms the static manual parameter adjustment system into a dynamic automated control system. The device parameters continuously adapt in real-time based on the detected ventricular contraction and relaxation patterns, enabling the system to respond dynamically to changing physiological conditions rather than requiring periodic manual reconfiguration.
4Ease of operation
If eddy current induction measurement is used, then ease of operation is improved through non-contact measurement, but manufacturing precision requirements increase
Solution Approach 1:
The patent utilizes changes in electromagnetic field parameters (frequency, amplitude, phase) to detect ventricular state. By varying these electrical parameters and measuring their response, the system achieves non-contact detection without requiring precise mechanical positioning or contact with the ventricle, simplifying the operational aspect of the sensor.
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
This solution allows for real-time detection and adjustment of ventricular assist devices, reducing the risk of adverse reactions and improving patient recovery by providing a cost-effective, widely accessible monitoring mechanism.
Implementation Method 1
The control module is configured to drive the coil to perform an eddy current induction measurement on a ventricle of the subject
Data Source
AI summary
A ventricular assist system comprises a ventricular state sensor and a ventricular assist device coupled to the ventricular state sensor. The ventricular state sensor includes a coil and a control module coupled to the coil. Wherein the control module is configured to drive the coil to perfume an eddy current induction measurement to a ventricle of the subject, and derive at least one ventricular state information of the subject through the eddy current induction measurement. Wherein the ventricular assist device receives the at least one ventricular state information to adjust at least one ventricular control parameter of the ventricular assist device.