Inter-Device Arrhythmia Confirmation Using Cardiac and Pressure Signals
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Solution Overview
Problem
Existing passive implantable medical sensors require patient interaction for data collection and communication, leading to significant delays in obtaining physiologically relevant data, which limits their use in real-time arrhythmia detection and management.
Innovation Solution
An implantable medical device (IMD) and implantable pressure sensor (IPS) system that senses cardiac activity and pressure on-demand and in real-time, with processors analyzing signals to detect and confirm arrhythmia, optionally adjusting sensitivity settings based on signal analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If passive implantable medical sensors are used to monitor physiologic conditions, then the sensor can collect physiologic data, but the sensor requires patient interaction and external device activation which causes significant delays in data collection and communication
Solution Approach 1:
The implantable pressure sensor is designed to autonomously sense and transmit physiologic data without requiring patient interaction or external device activation. The sensor self-activates to collect pressure data during cardiac cycles and automatically communicates with the IMD, eliminating the need for patient training and periodic reminders to use external devices.
Solution Approach 2:
The sensor enables continuous, on-demand physiologic monitoring by automatically sensing pressure during cardiac cycles and transmitting data in real-time to the IMD. This continuous operation ensures timely data collection without interruptions caused by patient non-compliance or delays in external device activation.
2Use of energy by moving object
If passive implantable medical sensors require external device activation for data collection, then the system can reduce power consumption, but the physiologic data is not timely collected and made available for real-time treatment determination
Solution Approach 1:
The implantable pressure sensor operates in periodic cycles, activating to sense pressure during specific cardiac cycles and then entering low-power states. This periodic operation allows the sensor to maintain real-time monitoring capability while managing power consumption through controlled activation intervals rather than continuous operation.
Solution Approach 2:
Despite periodic activation, the sensor maintains continuous monitoring capability by strategically activating during critical cardiac cycles to capture essential physiologic data. The sensor ensures timely data availability for real-time treatment determination while minimizing power consumption through optimized activation timing.
3Measurement precision
If multiple implantable devices are used for arrhythmia detection, then the system can improve diagnostic accuracy through signal analysis, but the device complexity increases
Solution Approach 1:
The system combines data from multiple sources including cardiac activity signals from the IMD and pressure signals from the implantable pressure sensor into a unified analysis framework. The processors integrate these different signal types to detect and confirm arrhythmias, improving diagnostic accuracy while managing system complexity through coordinated multi-device operation.
Solution Approach 2:
The implantable pressure sensor acts as an intermediary device that provides additional physiologic information to complement cardiac activity monitoring. By introducing this intermediate measurement modality, the system achieves more accurate arrhythmia detection through cross-validation of signals without requiring direct complex integration of multiple sensing mechanisms within a single device.
Data Source
AI summary
System for arrhythmia detection and confirmation includes implantable medical device (IMD) having a sensing circuit for sensing cardiac activity (CA) for one or more cardiac cycles and generating one or more CA signals. An implantable pressure sensor (IPS) includes IPS sensing circuit for sensing pressure during the one or more cardiac cycles and generating one or more pressure signals. IMD and IPS include communications circuits for communicating with each other and/or an external device. One or both of IMD or IPS includes memory for storing program instructions and processor(s) for analyzing one of the CA or pressure signals, for one or more cardiac cycles, to detect a candidate arrhythmia. In response to detecting candidate arrhythmia, the processor(s) obtain another one of CA or pressure signals for cardiac cycles corresponding to the one or more cardiac cycles, and confirm or deny candidate arrhythmia based on the other one of the signals.