Patents by Inventor Anand CHANDRASEKHAR

Anand CHANDRASEKHAR has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12011297
    Abstract: Various systems, techniques, and embodiments are disclosed for implementing a blood-pressure measurement method that does not require specialized equipment (such as inflatable blood pressure cuffs). The measurement can be taken from arterial locations within a user's finger, via the standard equipment and features of many widely-available consumer mobile devices. Such devices can be programmed to accurately and easily guide a user to press her finger on the screen of a device at a precise location, so that an accurate measurement can be taken. For example, guidance visualizations on a screen (such as finger silhouettes and animations) can be employed on the same screen on which a user presses her finger. Pressure sensitivity and optical camera readings are then used to calculate blood pressure for the user.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: June 18, 2024
    Assignee: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY
    Inventors: Ramakrishna Mukkamala, Anand Chandrasekhar, Keerthana Natarajan, Mohammad Yavarimanesh
  • Publication number: 20240000326
    Abstract: Devices and methods for determining blood pressures are provided. In one example, a device for determining blood pressure of a subject includes a camera configured to measure a finger photo-plethysmography (PPG) waveform, an accelerometer configured to measure a vertical height of the device relative to a heart of a subject, an output device configured to guide the subject to raise a hand to vary the transmural pressure of an artery while maintaining a finger pressure on the camera, and a processor configured to compute pulse pressure of the subject from the finger PPG waveform and the vertical height, and display the pulse pressure on the screen.
    Type: Application
    Filed: July 7, 2023
    Publication date: January 4, 2024
    Applicant: UNIVERSITY OF PITTSBURGH - OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION
    Inventors: Aman MAHAJAN, Ramakrishna MUKKAMALA, Feng XIONG, Mark A. FREITHALER, Sanjeev Govinddas SHROFF, Vishaal DHAMOTHARAN, Anand CHANDRASEKHAR
  • Patent number: 11684274
    Abstract: A system and method is presented for cuff-less blood pressure measurement in a mobile device. A key aspect of this disclosure is the discovery of a new location for blood pressure measurement at the fingertip of a subject and that reflectance-mode photoplethysmography can be used to help make this measurement. Through experiments in human subjects, it was discovered that it is indeed possible to measure systemic blood pressure by having a subject press the fingertip against a reflectance-mode photo-plethysmography-force sensor unit under visual guidance and then compute blood pressure from the resulting variable-amplitude blood volume oscillations and applied pressure via an oscillometric algorithm.
    Type: Grant
    Filed: June 2, 2021
    Date of Patent: June 27, 2023
    Assignee: Board of Trustees of Michigan State University
    Inventors: Ramakrishna Mukkamala, Anand Chandrasekhar, Jin-Oh Hahn
  • Patent number: 11179047
    Abstract: A system and method is presented for cuff-less blood pressure measurement in a mobile device. A key aspect of this disclosure is the discovery of a new location for blood pressure measurement at the fingertip of a subject and that reflectance-mode photoplethysmography can be used to help make this measurement. Through experiments in human subjects, it was discovered that it is indeed possible to measure systemic blood pressure by having a subject press the fingertip against a reflectance-mode photo-plethysmography-force sensor unit under visual guidance and then compute blood pressure from the resulting variable-amplitude blood volume oscillations and applied pressure via an oscillometric algorithm.
    Type: Grant
    Filed: July 18, 2019
    Date of Patent: November 23, 2021
    Assignee: Board of Trustees of Michigan State University
    Inventors: Ramakrishna Mukkamala, Anand Chandrasekhar, Jin-Oh Hahn
  • Publication number: 20210298618
    Abstract: A system and method is presented for cuff-less blood pressure measurement in a mobile device. A key aspect of this disclosure is the discovery of a new location for blood pressure measurement at the fingertip of a subject and that reflectance-mode photoplethysmography can be used to help make this measurement. Through experiments in human subjects, it was discovered that it is indeed possible to measure systemic blood pressure by having a subject press the fingertip against a reflectance-mode photo-plethysmography-force sensor unit under visual guidance and then compute blood pressure from the resulting variable-amplitude blood volume oscillations and applied pressure via an oscillometric algorithm.
    Type: Application
    Filed: June 2, 2021
    Publication date: September 30, 2021
    Inventors: Ramakrishna MUKKAMALA, Anand CHANDRASEKHAR, Jin-Oh HAHN
  • Publication number: 20200008693
    Abstract: A system and method is presented for cuff-less blood pressure measurement in a mobile device. A key aspect of this disclosure is the discovery of a new location for blood pressure measurement at the fingertip of a subject and that reflectance-mode photoplethysmography can be used to help make this measurement. Through experiments in human subjects, it was discovered that it is indeed possible to measure systemic blood pressure by having a subject press the fingertip against a reflectance-mode photo-plethysmography-force sensor unit under visual guidance and then compute blood pressure from the resulting variable-amplitude blood volume oscillations and applied pressure via an oscillometric algorithm.
    Type: Application
    Filed: July 18, 2019
    Publication date: January 9, 2020
    Inventors: Ramakrishna MUKKAMALA, Anand CHANDRASEKHAR, Jin-Oh HAHN
  • Patent number: 10398324
    Abstract: A system and method is presented for cuff-less blood pressure measurement in a mobile device. A key aspect of this disclosure is the discovery of a new location for blood pressure measurement at the fingertip of a subject and that reflectance-mode photoplethysmography can be used to help make this measurement. Through experiments in human subjects, it was discovered that it is indeed possible to measure systemic blood pressure by having a subject press the fingertip against a reflectance-mode photo-plethysmography-force sensor unit under visual guidance and then compute blood pressure from the resulting variable-amplitude blood volume oscillations and applied pressure via an oscillometric algorithm.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: September 3, 2019
    Assignees: Board of Trustees of Michigan State University, University of Maryland, College Park
    Inventors: Ramakrishna Mukkamala, Anand Chandrasekhar, Jin-Oh Hahn
  • Publication number: 20190008399
    Abstract: A system and method is presented for cuff-less blood pressure measurement in a mobile device. A key aspect of this disclosure is the discovery of a new location for blood pressure measurement at the fingertip of a subject and that reflectance-mode photoplethysmography can be used to help make this measurement. Through experiments in human subjects, it was discovered that it is indeed possible to measure systemic blood pressure by having a subject press the fingertip against a reflectance-mode photo-plethysmography-force sensor unit under visual guidance and then compute blood pressure from the resulting variable-amplitude blood volume oscillations and applied pressure via an oscillometric algorithm.
    Type: Application
    Filed: August 31, 2018
    Publication date: January 10, 2019
    Inventors: Ramakrishna MUKKAMALA, Anand CHANDRASEKHAR, Jin-Oh HAHN