Apple drew up a patent for a new kind of blood pressure monitor

June 11, 2018

Two years ago, a handful of Apple employees dreamed up a device that would take the company beyond the world of healthcare apps, and into healthcare products. That device isn’t the Apple Watch, at least not yet. Instead, it seems to be a device whose function could very well be rolled into future Apple Watch devices down the line. Apple applied for a patent for said device in a listing that became public, and it looks … underwhelming.

The design Apple had patented is for a wearable blood pressure monitor—a cuff, equipped with a sensor (or several) that track when a wearer’s blood pressure might be spiking too high or swimming too low. To put a tech spin on things, they mention that the device (might) sport a touchscreen, and (might) be Bluetooth compatible.

The reason for those qualifiers is because the current patent is extremely broad. The first claim says that it’ll be:

  • A blood pressure measurement system, comprising: a pressure sensor; an expandable member comprising a plurality of expandable cells, wherein the plurality of expandable cells comprises at least three expandable cells or at least two repeating expandable cells; and an expansion actuator configured to selectively expand the expandable member.

It’s a description that sounds like any other “blood pressure measurement” cuff on the market today. These devices work through a collection of tiny airbags, or “cells” in the patent, that are there to exert pressure on the wearer’s arm and cut off blood flow. From there, the device gets a measure of the heart’s maximum output, or its systolic pressure, before releasing to get a measure of the heart’s resting output, or the diastolic pressure.

Per Apple’s patent, the device is planned to have either one sensor (or several, in each airbag) to measure the blood’s pressure as it flows through the user’s arm or leg. There’s also an “actuator” to measure how much pressure is needed to get a good reading without crushing the user’s arm entirely.

Still, not only have these devices already been in the consumer market for years, but some of the tech-centric perks that Apple describes, like Bluetooth compatibility that can alert the wearer of any significant pressure issues, have already been done by other tech companies like Quardio, who have been selling its own Bluetooth-enabled monitors through Apple’s site and physical stores since last year.

The Verge article

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