公开(公告)号：US20240108303A1

公开(公告)日：2024-04-04

申请号：US18372626

申请日：2023-09-25

Applicant: California Institute of Technology

Inventor： Alessio TAMBORINI ,  Morteza GHARIB

IPC: A61B7/00 ,  A61B5/00 ,  A61B5/021 ,  A61B5/022

CPC classification number: A61B7/00 ,  A61B5/02116 ,  A61B5/022 ,  A61B5/7264 ,  A61B5/7282 ,  A61B5/025

Abstract: The disclosure relates to systems and methods for noninvasively performing cardiac auscultation. In some implementations, a method includes: performing, using a BP cuff of a BP cuff system, a blood pressure measurement of a subject to obtain one or more blood pressure values corresponding to the subject; inflating, based on the one or more blood pressure values corresponding to the subject, the BP cuff to a subject specific pressure value; capturing, using the BP cuff system, while the BP cuff is inflated to the subject specific pressure value, a pulse pressure waveform signal associated with an artery of the subject; obtaining a sound waveform signal associated with a heart valve of the subject by filtering the pulse pressure waveform signal to extract sound components associated with the opening or closing of the heart valve; and analyzing the sound waveform signal to identify characteristics of the heart of the subject.

公开(公告)号：US20250082280A1

公开(公告)日：2025-03-13

申请号：US18829089

申请日：2024-09-09

Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY

Inventor： Alessio TAMBORINI ,  Morteza GHARIB ,  Arian AGHILINEJAD

IPC: A61B5/00 ,  A61B5/02 ,  A61B5/021 ,  A61B5/024 ,  A61B5/025

Abstract: The disclosure relates to techniques for transferring a pulse pressure waveform signal of a peripheral vascular site to a central vascular site. In some implementations, a method includes: obtaining a time-domain representation of a first pulse pressure waveform signal of a brachial artery of a subject; converting the time-domain representation of the first pulse pressure waveform signal to a frequency-domain representation of the first pulse pressure waveform signal; selecting a first plurality of frequency components of the frequency-domain representation of the first pulse pressure waveform signal; predicting, using a non-linear mapping, based on the first plurality of frequency components, a second plurality of frequency components of a frequency-domain representation of a second pulse pressure waveform signal of an ascending aorta or left ventricle of the subject; and converting the frequency-domain representation of the second pulse pressure waveform signal to a time-domain representation of the second pulse pressure waveform signal.

公开(公告)号：US20240265585A1

公开(公告)日：2024-08-08

申请号：US18431447

申请日：2024-02-02

Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY

Inventor： Julian M. HUMML ,  Morteza GHARIB ,  Thomas ROESGEN

IPC: G06T11/00 ,  G01P1/07 ,  G01P5/00 ,  G06T7/70

CPC classification number: G06T11/00 ,  G01P1/07 ,  G01P5/001 ,  G06T7/70 ,  G06T2207/20081

Abstract: Systems and methods for real-time environmental sensor data gathering is enhanced using augmented reality, with a virtual target object being presented to the user of the sensor device that guides the user where to move the sensor device next. A combination of pose data for the sensor and data modeling of the sensor data allows for users with minimal training to make optimized environmental readings.