Modular Defibrillation Architecture for Refractory VF Rescue
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Solution Overview
Problem
Conventional defibrillators struggle to effectively convert refractory ventricular fibrillation to a sustained organized rhythm, particularly in cases of Out-of-Hospital Cardiac Arrest, due to their single-channel defibrillation limitations.
Innovation Solution
A medical device with a host capable of assembling and disassembling defibrillation modules, supporting single-channel and dual-channel defibrillation modes, and a processor to automatically or manually select the appropriate mode based on the number of modules detected, allowing flexible and efficient defibrillation operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate defibrillator is used for cardiac arrest rescue, then defibrillation function is provided, but device complexity and cost increase
Solution Approach 1:
The patent combines the defibrillator's core functions (rhythm analysis, defibrillation delivery, and shock advisory) directly into the wearable cardioverter defibrillator device. This integration eliminates the need for separate defibrillator equipment while maintaining full defibrillation capability, thereby reducing device complexity and cost without compromising cardiac arrest rescue reliability
2Reliability
If shock delivery is delayed during CPR, then continuous monitoring is possible, but defibrillation effectiveness decreases
Solution Approach 1:
The device performs preliminary rhythm analysis and continuously monitors cardiac rhythms during CPR, pre-positioning the system to deliver defibrillation shocks immediately when life-threatening rhythms are detected. This preliminary monitoring and readiness state ensures that when a shockable rhythm is identified, defibrillation can be delivered without dangerous delays, maintaining both effectiveness and timely response
3Measurement precision
If multiple leads are used for rhythm monitoring, then monitoring accuracy improves, but device complexity and infection risk increase
Solution Approach 1:
The patent employs a single multi-functional lead that serves multiple purposes: it performs rhythm monitoring, delivers pacing therapy, and provides defibrillation shock delivery. This single lead system achieves comprehensive cardiac monitoring and therapy delivery without requiring multiple separate leads, thereby maintaining measurement precision while reducing device complexity and infection risk associated with multiple lead insertions
Data Source
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AI summary
A medical device with a defibrillation function, a method for configuring same, and a medium. The medical device comprises a host (101) configured to be detachably attached to at least one defibrillation module (102, 102a, 102b) such that at least two defibrillation modules (102, 102a, 102b) can be combined in the medical device, and is pre-set with single- and dual-channel defibrillation modes (104a, 104b). The host (101) comprises a processor (101a) configured to: detect the number of defibrillation modules (102, 102a, 102b) included in the medical device; when a single defibrillation module (102, 102a, 102b) is detected, determine the single-channel defibrillation mode (104a) as the target defibrillation mode and control the medical device to perform defibrillation operations in this mode; when two defibrillation modules (102, 102a, 102b) are detected, automatically or on the basis of user-selected instructions, determine the single- or dual-channel defibrillation mode (104a, 104b) as the target defibrillation mode and control the medical device to perform defibrillation operations in this mode. The device can provide an open architecture and functionality, flexibly and efficiently meeting needs for defibrillation for cardiac arrhythmia in various scenarios, is convenient to use, and has lower maintenance costs.