公开(公告)号：US20210041287A1

公开(公告)日：2021-02-11

申请号：US16930125

申请日：2020-07-15

Applicant: Apple Inc.

Inventor： Henry Rimminen ,  Ali M. Amin ,  Timothy L. Weadon ,  Yindar Chuo ,  Zijing Zeng ,  Erno Klaassen

IPC: G01H11/08 ,  A61B5/00 ,  H01L41/047 ,  H01L41/113 ,  A61B5/08 ,  A61B5/0205

Abstract: A sensor system includes a sensor stack, a differential amplifier, an analog-to-digital converter, and a processor. The sensor stack includes a piezoelectric material having a first side opposing a second side, a first electrode connected to the first side, and a second electrode connected to the second side. The differential amplifier is coupled to the first and second electrodes and is configured to generate a differential output indicative of vibrations sensed by the piezoelectric material. The analog-to-differential converter is configured to digitize the differential output. The processor is configured to identify a type of biological vibration included in the digitized differential output.

公开(公告)号：US20200367767A1

公开(公告)日：2020-11-26

申请号：US16990650

申请日：2020-08-11

Applicant: Apple Inc.

Inventor： Thomas J. Sullivan ,  Wren Nancy Dougherty ,  Richard C. Kimoto ,  Erno Klaassen ,  Ravi K. Narasimhan ,  Stephen J. Waydo ,  Todd K. Whitehurst ,  Derek Park-Shing Young ,  Santiago Quijano ,  Zijing Zeng

IPC: A61B5/021 ,  A61B5/0408 ,  A61B5/1455 ,  A61B5/00

Abstract: A pulse transit time is measured non-invasively and used to calculate a blood pressure value. A method of determining one or more blood pressure values includes propagating an alternating drive current through a thorax of a subject via electrodes located on a wrist-worn device. Resulting voltage levels of the subject are sensed by the wrist-worn device. The voltage levels are processed to detect when a volume of blood is ejected from the left ventricle. Output from a pulse arrival sensor coupled to the wrist-worn device is processed to detect when a blood pressure pulse generated by ejection of the volume of blood from the left ventricle arrives at the wrist. A pulse transit time (PTT) for transit of the blood pressure pulse from the left ventricle to the wrist is calculated. One or more blood pressure values for the subject are determined based on the PTT.

公开(公告)号：US10772512B2

公开(公告)日：2020-09-15

申请号：US15680931

申请日：2017-08-18

Applicant: Apple Inc.

Inventor： Erno H. Klaassen ,  Wren Nancy Dougherty ,  Richard C. Kimoto ,  Ravi Narasimhan ,  Thomas J. Sullivan ,  Stephen J. Waydo ,  Todd K. Whitehurst ,  Santiago Quijano ,  Derek Park-Shing Young ,  Zijing Zeng

IPC: A61B5/021 ,  A61B5/00 ,  A61B5/11 ,  A61B5/1455 ,  G06F19/00

Abstract: The present invention provides non-invasive devices, methods, and systems for determining a pressure of blood within a cardiovascular system of a user, the cardiovascular system including a heart and the user having a wrist covered by skin. More particularly, the present invention discloses a variety of wrist-worn devices having a variety of sensors configured to non-invasively engage the skin on the wrist of the user for sensing a variety of user signals from the cardiovascular system of the user. Generally, approaches disclosed herein may passively track blood pressure values without any interaction required on the part of the user or may allow for on demand or point measurements of blood pressure values by having a user actively interact with the sensors of the wrist-worn device. Approaches disclosed herein further allow for absolute blood pressure values to be determined directly without the requirement for any periodic calibrations or for relative blood pressure values to be tracked so as to provide relative blood pressure indices.

公开(公告)号：US11896136B2

公开(公告)日：2024-02-13

申请号：US17020585

申请日：2020-09-14

Applicant: Apple Inc.

Inventor： Riley E. Brandt ,  Linda Benavente-Notaro ,  Antonio Herrera ,  Denis Lin ,  Zijing Zeng ,  Erno H. Klaassen ,  Zhipeng Zhang

IPC: A47C27/08 ,  G08B6/00 ,  A47C27/14 ,  A47C27/10 ,  A47C27/18 ,  G08B1/04

CPC classification number: A47C27/083 ,  A47C27/10 ,  A47C27/146 ,  A47C27/18 ,  G08B1/04 ,  G08B6/00

Abstract: An in-bed haptic device may include an array of actuation cells. Actuation cells of the array of actuation cells may be configured to actuate (e.g., expand, contract, or otherwise change shape) in a predetermined sequence to provide haptic outputs. The in-bed haptic device may be configured to be placed beneath a user during use, for example between a user and a mattress. The haptic outputs may be provided to help a user relax, to move and/or wake a user, to indicate outputs, alerts, or notifications at the in-bed haptic device or another electronic device, or the like.

公开(公告)号：US11747218B2

公开(公告)日：2023-09-05

申请号：US17145150

申请日：2021-01-08

Applicant: Apple Inc.

Inventor： Joseph M. Schmitt ,  Pablo A. Escobar ,  Zijing Zeng

IPC: G01K11/12 ,  G06T7/90 ,  G03B17/56 ,  A61B5/01 ,  A61B5/00 ,  A61B1/04 ,  A61B1/07 ,  A61B1/227 ,  G06T7/00 ,  H04N23/55 ,  H04N23/80 ,  H04N23/667 ,  F21V8/00

CPC classification number: G01K11/12 ,  A61B1/042 ,  A61B1/07 ,  A61B1/227 ,  A61B5/015 ,  A61B5/6898 ,  G03B17/565 ,  G06T7/0004 ,  G06T7/90 ,  H04N23/55 ,  H04N23/667 ,  H04N23/80 ,  G02B6/0001 ,  G06T2207/10024

Abstract: A camera attachment for measuring a temperature of a surface, and related methods of measuring the temperature of the surface, employ a temperature reactive material that is thermally coupled with the surface and imaged to provide image data of the temperature reactive material that is analyzed to measure the temperature. A camera attachment for measuring a temperature of a surface includes a distal surface configured to be thermally coupled with the surface, a frame configured to be coupled with a camera that has a field of view, and a temperature reactive material coupled with the frame and thermally coupled with the distal surface. The frame positions the temperature reactive material within the field of view of the camera so that an image captured by the camera includes at least a portion of the temperature reactive material.

公开(公告)号：US20220409095A1

公开(公告)日：2022-12-29

申请号：US17355442

申请日：2021-06-23

Applicant: Apple Inc.

Inventor： Yindar Chuo ,  Zijing Zeng

IPC: A61B5/11 ,  A61B7/00 ,  A61B5/00

Abstract: A sensor system may have a force sensor formed from a piezoelectric film. The piezoelectric film may comprise a number of tuned microstructures that are configured to resonate at a particular frequency. In accordance with the tuning of the microstructures, frequency signals corresponding to the microstructure resonance may be mechanically amplified before being processed by associated processing electronics. The processing electronics may be configured to identify a type of biological vibration detected by the force sensor.

公开(公告)号：US20210038092A1

公开(公告)日：2021-02-11

申请号：US16929731

申请日：2020-07-15

Applicant: Apple Inc.

Inventor： Ali M. Amin ,  Yindar Chuo ,  Zijing Zeng

IPC: A61B5/0205 ,  H01L41/047 ,  H01L41/053 ,  H01L41/113 ,  H01L41/193 ,  H01L41/29 ,  H01L41/313 ,  H01L41/338 ,  A61B5/00

Abstract: A sleep monitor includes a layered sensor that includes at least one substrate layer that includes multiple laterally adjacent substrates. The substrate layer may be formed by interdigitating fingers of a first sheet with fingers of a second sheet. Combining multiple substrates in a single layer of a layered sensor may allow multiple materials and/or sensing mechanisms to be combined together in a single layer.

公开(公告)号：US20170360306A1

公开(公告)日：2017-12-21

申请号：US15507659

申请日：2015-09-08

Applicant: Apple, Inc.

Inventor： Ravi Narasimhan ,  Zijing Zeng ,  Richard C. Kimoto ,  Erno Klaassen ,  Thomas J. Sullivan ,  Derek Park-Shing Young ,  Todd K. Whitehurst

IPC: A61B5/022 ,  A61B5/021 ,  A61B5/00

Abstract: The present invention generally relates to blood pressure monitoring. In some embodiments, methods and devices of measuring a mean arterial pressure are provided and/or monitoring blood pressure changes. A wrist-worn device may include a plurality of sensors backed by a plurality of actuators. Subsets of the plurality of sensors may be selectively actuateable against a wrist of a user using one or more of the plurality of actuators. A preferred sensor and location may be identified based on pressure signals received from each of the sensors. In some embodiments, devices may use a fluid bladder coupled with piezoelectric film sensors. A fluid bladder pressure sensor may be used to calibrate the piezoelectric film signal to provide a static and dynamic pressure reading. In yet another embodiment, a mean arterial pressure may be calculated by processing a swept pressure signal obtained as a sensor is swept through different heights.

公开(公告)号：US12220213B2

公开(公告)日：2025-02-11

申请号：US16987851

申请日：2020-08-07

Applicant: Apple Inc.

Inventor： 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

IPC: A61B5/021 ,  A61B5/00 ,  A61B5/11 ,  A61B5/1455 ,  G16H20/00 ,  G16H40/67

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.

公开(公告)号：US20240019317A1

公开(公告)日：2024-01-18

申请号：US18224204

申请日：2023-07-20

Applicant: Apple Inc.

Inventor： Joseph M. Schmitt ,  Pablo A. Escobar ,  Zijing Zeng

IPC: G01K11/12 ,  G06T7/90 ,  G03B17/56 ,  A61B5/01 ,  A61B5/00 ,  A61B1/04 ,  A61B1/07 ,  A61B1/227 ,  G06T7/00 ,  H04N23/55 ,  H04N23/80 ,  H04N23/667

CPC classification number: G01K11/12 ,  G06T7/90 ,  G03B17/565 ,  A61B5/015 ,  A61B5/6898 ,  A61B1/042 ,  A61B1/07 ,  A61B1/227 ,  G06T7/0004 ,  H04N23/55 ,  H04N23/80 ,  H04N23/667 ,  G02B6/0001

Abstract: A camera attachment for measuring a temperature of a surface, and related methods of measuring the temperature of the surface, employ a temperature reactive material that is thermally coupled with the surface and imaged to provide image data of the temperature reactive material that is analyzed to measure the temperature. A camera attachment for measuring a temperature of a surface includes a distal surface configured to be thermally coupled with the surface, a frame configured to be coupled with a camera that has a field of view, and a temperature reactive material coupled with the frame and thermally coupled with the distal surface. The frame positions the temperature reactive material within the field of view of the camera so that an image captured by the camera includes at least a portion of the temperature reactive material.