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GooglePatent applicationHealth & bodyInterest 8/10

Google patents phone sensor that measures blood pressure from a fingertip

Google describes a computing device with a small sensor on its housing that fits under a user's fingertip. It uses tiny electrodes to measure electrical changes in the finger over time to estimate blood pressure.

Why it mattersThis could allow phones to track vital health signs without separate wearables, making continuous monitoring easier for everyday users.

In the filing’s own words

A user computing device includes a housing and an impedance plethysmography (IPG) sensor positioned on the housing. The IPG sensor has a pair of miniaturized excitation electrodes and a pair of miniaturized sensing electrodes that together are sized to fit under a fingertip of a user. Further, the IPG sensor is configured to generate IPG data indicative of an impedance at the fingertip of the user with respect to time. The user computing device also includes a processor configured to receive the IPG data, generate a pulsatile signal for deriving a blood pressure or a proxy of blood pressure of the user based at least in part on the IPG data, and determine the blood pressure or the proxy of blood pressure of the user based on the pulsatile signal.

What exactly they claim (claim 1)

1. A user computing device, comprising: a housing; an impedance plethysmography (IPG) sensor positioned on the housing, the IPG sensor having a pair of miniaturized excitation electrodes and a pair of miniaturized sensing electrodes that together are sized to fit under a fingertip of a user, the IPG sensor being configured to generate IPG data indicative of an impedance at the fingertip of the user with respect to time; and a processor configured to: receive the IPG data; generate a pulsatile signal for deriving a blood pressure or a proxy of blood pressure of the user based at least in part on the IPG data; and determine the blood pressure or the proxy of blood pressure of the user based on the pulsatile signal.

Facts

Company
Google (Google LLC)
Official title
Computing Device Having Miniaturized Impedance Plethysmography Sensor for Measuring Blood Flow
Publication number
US20260272323A1
Application number
19080266
Filed
Mar 14, 2025
Published
Sep 17, 2026
Inventors
6
Claims
20

Classified under

A61B 5/0535 Human necessitiesA61B 5/021 Human necessitiesA61B 5/02427 Human necessitiesA61B 5/6898 Human necessitiesA61B 5/7278 Human necessitiesA61B 2560/0468 Human necessities
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.