20250213125. Blood Pressure Monitoring Using M (Apple .)
Blood Pressure Monitoring Using a Multi-Function Wrist-Worn Device
Abstract: methods and devices for obtaining a blood pressure measurement of a subject measure a transit time of a blood pulse of the subject. a method includes sensing, with a pulse ejection sensor of a wrist-worn device, ejection of blood from the left ventricle. arrival of a resulting blood pressure pulse at the wrist is sensed via a pulse arrival sensor of the wrist-worn device. a transit time of the blood pressure pulse from the left ventricle to the wrist is determined. a relative blood pressure value of the subject is determined based on the transit time. a reference absolute blood pressure value associated with the relative blood pressure value is received. an absolute blood pressure value for the relative blood pressure value is determined based on the reference absolute blood pressure value and the relative blood pressure value.
Inventor(s): Erno H. Klaassen, Wren Nancy Dougherty, Richard C. Kimoto, Ravi K. Narasimhan, Thomas J. Sullivan, Stephen J. Waydo, Todd K. Whitehurst, Santiago Quijano, Derek Park-Shing Young, Zijing Zeng
CPC Classification: A61B5/021 (Measuring pressure in heart or blood vessels ( takes precedence))
Search for rejections for patent application number 20250213125
- Patent Applications
- Apple Inc.
- CPC A61B5/021
- Erno H. Klaassen of Los Altos CA US
- Wren Nancy Dougherty of San Francisco CA US
- Richard C. Kimoto of Fremont CA US
- Ravi K. Narasimhan of Sunnyvale CA US
- Thomas J. Sullivan of San Jose CA US
- Stephen J. Waydo of Saratoga CA US
- Todd K. Whitehurst of Cupertino CA US
- Santiago Quijano of San Jose CA US
- Derek Park-Shing Young of Fremont CA US
- Zijing Zeng of San Jose CA US