Future Apple could measure blood pressure without extra peripherals

Plans for a new sensor could mean that the regular Apple will be able to accurately measure blood pressure without the need for supplements such as a blood pressure cuff.

One of Apple’s very first health-related features was its ability to measure heart rate in beats per minute. However, he was not able to accurately measure blood pressure as it requires more sensitive sensors, and also for these sensors to be placed accurately on a vein.

While you can get blood pressure apps for Apple, they require an additional device, such as a blood pressure cuff, that wraps around the entire wrist. “Pressure measurement designs”, US Patent No. 10,646,121 describes a way to do without this cuff and always achieve accuracy both in terms of positioning and data.

This is important both because it increases the number of people who will be able to check their blood pressure – they only need their Apple, they don’t need to buy anything else – but also because of the range of medical benefits that regularly come from recording this data.

“Pressure measurement can be useful for monitoring one or more user parameters,” says the patent. “For example, blood pressure measurements can be a useful user parameter for measuring because high blood pressure (high blood pressure) can be an indicator of potential health problems.”

“In addition, pressure measurements can also indicate a user’s heart rate,” he continues. “In addition, in some cases, pressure measurements can provide blood pressure waveform morphologies which can be a useful user parameter to monitor.”

What Apple offers is that rather than having sensors arranged through an armband or other additional device to wrap the wrist, the itself gains a number of sensors. A combination of hardware and software takes advantage of this range of sensors to calculate precise calculations.

“A network of sensors can increase the chances of correct placement of at least one pressure sensing node relative to the target artery,” he explains. This increases the “pressure sensing resolution” to help provide a range of data measurements.

“These devices can help reduce signal processing problems because one or more preferred pressure sensing nodes in the sensor network can be identified and the pressure signals received from them may require less error correction or processing “, continues the patent. “These devices can provide a more practical and accurate blood pressure monitor.”

The patent does not use the words “Apple” and instead describes several times “a device worn on the wrist”. Apple may therefore intend to create a separate product. But the patent is unlikely to point out that the point is “to increase the adoption of non-clinical measures and the monitoring of blood pressure by ordinary consumers.”

Detail of a patent showing a network of potential sensors

The invention is attributed to Ravi K. Narasimhan, Zijing Zeng and Zhipeng Zhang. Among Zeng’s prior patents, there is a related patent for a “wrist-worn accelerometer for measurements of blood pressure transit time (PTT)”. Zhang’s previous inventor credits include patent

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The Apple currently on sale were recently part of a blood pressure and body mass index research project led by the Framington Heart Study.

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