Electrophysiology Coordinating Interface Arbitration
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Solution Overview
Problem
In electrophysiology studies, multiple devices competing for limited electrode resources often experience cross-coupled noise, ground stabilization issues, and interference, making it impractical to share electrodes due to differing filtration requirements, which increases setup and troubleshooting time in the operating room.
Innovation Solution
A coordinating interface that uses a computer-mediated arbitration system to manage competing demands from multiple medical devices, featuring a multiway switch, analog-to-digital converters, and a control network to intelligently allocate electrode resources, minimize interference, and allow flexible filtration and communication protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple devices share electrode resources directly, then device complexity is reduced, but cross-coupled noise and interference increase
Solution Approach 1:
The patent introduces a signal distribution unit as an intermediary device between the electrodes and multiple medical devices. This intermediary manages signal routing, filtering, and distribution to prevent direct interference between devices while sharing electrode resources. The signal distribution unit acts as a mediator that reconciles the conflicting requirements of multiple devices accessing limited electrode resources.
2Adaptability or versatility
If electrodes are shared among multiple devices, then electrode availability increases, but ground stabilization problems occur
Solution Approach 1:
The patent segments the signal distribution into multiple independent channels, each with its own filtering and grounding provisions. This segmentation allows different devices to access electrode signals through isolated pathways, preventing ground loops and stabilization issues while maintaining electrode availability. Each channel can be independently grounded and filtered to maintain signal integrity.
3Measurement precision
If different filtration requirements are applied to shared electrodes, then measurement precision improves, but setup time increases
Solution Approach 1:
The patent incorporates pre-configured filtering options within the signal distribution unit, allowing different filtration requirements to be established before patient connection. The system provides preset filter configurations that can be selected based on the specific medical devices and measurement requirements, eliminating the need for time-consuming manual filter adjustment during setup and troubleshooting.
4Productivity
If multiple devices access electrical signals simultaneously, then data acquisition efficiency improves, but interference from conflicting uses increases
Solution Approach 1:
The patent implements a request arbitration mechanism that monitors and manages access requests from multiple devices. The arbitration system evaluates competing requests, determines priority based on predefined criteria, and grants access accordingly. This feedback-controlled arbitration prevents conflicting simultaneous access that would cause interference while maintaining efficient data acquisition by allowing multiple devices to operate in a coordinated manner.
Data Source
AI summary
A coordinating interface for electrophysiological signals provides inputs for ECG and intra-cardiac electrodes and provides a computer controllable processing path outputting data using a shareable digital data output. Requests received over a digital control line allow the computer to control a multiway switch and analog filter set to arbitrate among different uses of the electrophysiological signals by different devices. A single coordinating interface helps reduce interference from competing uses. Pre-stored configuration data simplifies the connection of different devices having different uses of the physiological data.