Scanning techniques to determine sensor placement
The scanning device optimizes PPG sensor placement on the chest by analyzing PPG signals and force feedback, addressing the impracticality of peripheral sites and improving measurement accuracy and reliability.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- IRHYTHM TECHNOLOGIES INC
- Filing Date
- 2025-12-30
- Publication Date
- 2026-07-09
AI Technical Summary
Conventional PPG sensor placement techniques on peripheral sites like fingers or earlobes are impractical for continuous monitoring due to motion artifacts and anatomical variations, and alternative sites like the chest present unique challenges due to individual differences in anatomy and physiology.
A scanning device is used to determine optimal PPG sensor placement on the chest by analyzing PPG signals at multiple locations, considering anatomical data and force feedback, to optimize signal quality based on metrics like signal-to-noise ratio and perfusion index, and provide personalized recommendations.
This approach improves the accuracy and reliability of PPG measurements by systematically identifying high-quality signal locations, reducing variability, and making the technique accessible and cost-effective using a smartphone.
Smart Images
Figure US2025061715_09072026_PF_FP_ABST