Doppler Ultrasound Probe for Real-Time CPR Hemodynamic Guidance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current CPR assistance tools fail to significantly improve survival rates and post-arrest conditions during cardiac arrest, as they lack real-time feedback and prescriptive measures to optimize blood flow and account for individual subject factors.
Innovation Solution
Devices and methods that non-invasively measure hemodynamic properties like blood flow velocity and pressure, providing real-time resuscitation guidance to adjust CPR techniques based on baseline metrics for improved coronary and cerebral perfusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current CPR assistance tools are used to monitor chest compression depth and rate, then basic CPR metrics can be tracked, but real-time hemodynamic effectiveness and prescriptive feedback for improvement cannot be provided
Solution Approach 1:
The patent replaces mechanical measurement systems (chest compression depth sensors) with acoustic measurement systems (Doppler ultrasound transducers) to directly measure blood flow velocity in carotid arteries, providing precise hemodynamic data without complex mechanical instrumentation
Solution Approach 2:
The patent introduces an acoustic interface element with hydrogel as an intermediary between the ultrasound transducer and the patient's skin, enabling effective acoustic coupling and signal transmission while simplifying the overall measurement system architecture
2Adaptability or versatility
If universal CPR protocols are applied to all cardiac arrest patients, then standardization is achieved, but individual variations in blood flow response and survival outcomes cannot be addressed
Solution Approach 1:
The patent implements real-time feedback by continuously monitoring blood flow velocity during CPR and comparing it to baseline values, providing immediate prescriptive feedback to rescuers about whether compressions are effective and guiding adjustments to improve individual patient outcomes
Solution Approach 2:
The patent measures hemodynamic properties at specific critical locations (carotid arteries supplying the brain) to assess local blood flow quality, enabling targeted evaluation of CPR effectiveness for each patient's unique anatomy and physiology
3Ease of operation
If indirect light absorption methods are used to measure tissue perfusion, then non-invasive monitoring is achieved, but specific prescriptive feedback for improving blood flow cannot be provided
Solution Approach 1:
The patent provides prescriptive feedback by analyzing the relationship between chest compression actions and resulting blood flow velocity changes, giving rescuers specific guidance on whether to increase compression depth, rate, or allow full recoil to optimize hemodynamic outcomes
Solution Approach 2:
The patent replaces optical measurement methods (light absorption) with acoustic measurement methods (Doppler ultrasound) to directly measure blood flow velocity, providing more actionable hemodynamic information while maintaining non-invasive operation through acoustic coupling
4Stability of the object's composition
If automated compression devices are used to replicate manual CPR, then consistency in compression delivery is improved, but real-time adjustment based on hemodynamic response cannot be achieved
Solution Approach 1:
The patent enables real-time feedback to both automated devices and manual rescuers, allowing immediate adjustment of compression parameters based on measured blood flow velocity, thereby extending the duration of effective CPR by adapting to the patient's changing hemodynamic needs
Solution Approach 2:
The patent transforms static, fixed-protocol CPR delivery into a dynamic system that continuously adapts compression parameters based on real-time hemodynamic measurements, optimizing the duration and effectiveness of CPR for each individual patient
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
Enhances CPR effectiveness by providing precise prescriptive adjustments to improve survival rates and post-arrest conditions through direct measurement and analysis of hemodynamic properties, addressing the limitations of existing technologies.
Implementation Method 1
In one embodiment, the measured hemodynamic property is cardiac output through a carotid artery as measured by blood flow velocity
Data Source
AI summary
A medical device for providing guidance to administered cardiopulmonary resuscitation during cardiac arrest in a subject comprising a measuring probe to measure a hemodynamic property of blood flowing through a blood vessel of the subject, an interface element with reference indicia to guide the measuring probe to major blood vessels of the subject experiencing cardiac arrest, and a blood flow monitoring device comprising a data module to collect measured hemodynamic properties of the subject and a guidance module configured to display resuscitation guidance information for manipulating at least one hemodynamic property of the blood.