Implantable Device Posture-Induced Ejection Time Analysis
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Solution Overview
Problem
Current methods for assessing patient conditions using posture-induced changes in heart-related physiological parameters are limited in accurately detecting fluid overload and heart failure, as they fail to effectively analyze changes in ejection time and heart rate postural changes, particularly in patients with conditions like hypervolemia and heart failure.
Innovation Solution
An implantable medical device with sensing and control modules that monitor and analyze posture-induced changes in left and right ventricular ejection time, heart rate, and other parameters, comparing these changes to baseline values and previous trends to assess patient conditions and potentially deliver cardiac therapy or alerts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current methods are used to assess patient conditions, then general monitoring is provided, but accurate detection of fluid overload and heart failure is limited
Solution Approach 1:
The patent segments the assessment into distinct components: posture detection, ejection time measurement, heart rate monitoring, and trend analysis. By dividing the complex assessment into manageable segments, the system achieves accurate detection of fluid overload and heart failure while maintaining manageable device complexity.
Solution Approach 2:
The system performs preliminary actions by establishing baseline values for ejection time and heart rate during normal conditions. These baselines are stored and used for future comparisons, enabling accurate detection of pathological changes without requiring complex real-time analysis algorithms.
2Reliability
If posture-induced changes in ejection time and heart rate are analyzed, then accurate assessment of patient conditions is achieved, but the device complexity increases
Solution Approach 1:
The system implements feedback by continuously monitoring ejection time and heart rate changes in response to posture changes, comparing these changes against baseline values, and using the results to assess patient condition. This feedback mechanism improves reliability while keeping device complexity manageable through automated comparison algorithms.
Solution Approach 2:
The device performs self-service by automatically detecting posture changes, measuring physiological parameters, comparing values to baselines, and generating assessments without requiring external intervention. This automation improves reliability while the integrated design prevents excessive complexity increase.
3Reliability
If baseline comparison and trend analysis are performed, then timely intervention is enabled, but the loss of time for data processing increases
Solution Approach 1:
The system performs preliminary actions by pre-establishing baseline values and storing them for rapid comparison. When new measurements are taken, the system immediately compares them against pre-stored baselines without requiring complex real-time computation, thus enabling timely intervention while minimizing data processing time.
Solution Approach 2:
The patent replaces complex mechanical or manual analysis systems with electronic data processing and automated comparison algorithms. This substitution reduces the time required for data processing while maintaining or improving the reliability of assessments, enabling timely clinical intervention.
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 accurate assessments of patient conditions by analyzing posture-induced changes in ejection time and heart rate, enabling timely intervention and therapy adjustments, thereby improving the management of fluid overload and heart failure.
Implementation Method 1
a patient changing posture from a lying position to a more upright position may affect the patient's venous return due to gravity
Data Source
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AI summary
Methods and devices for analyzing posture-induced changes to physiological parameters of a patient (e.g., ejection time, heart rate, etc.) to provide an assessment of one or more conditions of the patient.