公开(公告)号：US20210321889A1

公开(公告)日：2021-10-21

申请号：US17210371

申请日：2021-03-23

Applicant: Apple Inc.

Inventor： Pranay Jain ,  Nicholas R. Trincia ,  Chia-Hsien Lin ,  Zijing Zeng

IPC: A61B5/022 ,  A61B5/0235 ,  A61B5/00

Abstract: Embodiments include a blood pressure measurement device that includes a cuff for measuring blood pressure of a user. The cuff may include a bladder assembly configured to retain a fluid within an internal chamber where the bladder assembly is formed from a first cell defining a first portion of the internal chamber that is connected with a second cell defining a second portion of the internal chamber. The bladder assembly can also include a fluid passage that is in fluid communication with the first cell and the second cell and coupled with a reservoir. The bladder assembly can exchange the fluid with the reservoir and be configured to increase in length when a volume of the fluid in the internal chamber decreases, and decrease in length when the volume of the fluid in the internal chamber increases.

公开(公告)号：US20220015652A1

公开(公告)日：2022-01-20

申请号：US16928933

申请日：2020-07-14

Applicant: Apple Inc.

Inventor： Joseph R. Lee ,  Joseph M. Schmitt ,  Derek Young ,  Pranay Jain ,  Ali M. Amin ,  Wegene Tadele ,  Zijing Zeng

IPC: A61B5/022 ,  A61B5/00

Abstract: Embodiments are directed to a blood pressure measurement device including a cuff that is operative to wrap around a limb of a user, a bladder coupled to the cuff and operative to compress the limb of the user when inflated, and a piezoelectric sensor coupled to the cuff and operative to detect blood flow through the limb of the user and output a signal indicative of the blood flow. The blood pressure measurement device can also include a processor coupled with the piezoelectric sensor that is operative to filter the signal to isolate sounds corresponding to changes in the blood flow through the limb due to inflation of the bladder, correlate the isolated sounds with a pressure inside the bladder, and determine a blood pressure of the user at least partially based on correlating the isolated sounds with the pressure.

公开(公告)号：US20220087545A1

公开(公告)日：2022-03-24

申请号：US17398775

申请日：2021-08-10

Applicant: Apple Inc.

Inventor： Pranay Jain ,  Joseph R. Lee ,  William S. Lee ,  Zijing Zeng

IPC: A61B5/0235 ,  A61B5/021

Abstract: Embodiments are directed to a blood pressure measurement device that includes a cuff configured to wrap around a limb of a user when the cuff is worn by the user, a bladder coupled to the cuff and configured to compress the limb when inflated, and a pump operative to inflate the bladder. The blood pressure measurement device can also include a valve positioned between the bladder and the pump and configured to operate in a first state that allows air from the pump to enter the bladder and prevent air from leaving the bladder. The valve can also be configured to operate in a second state that allows air to leave the bladder. The blood pressure measurement device can also include a vent positioned between the bladder and an external environment and configured to continuously release air from the bladder.