Joshua Hyungjoo Kim

US Patent:

20210161405, Jun 3, 2021

Filed:

Jan 22, 2021

Appl. No.:

17/156235

Inventors:

- Oakland CA, US
Nicole Eckmann - Folsom CA, US
Kimberly Veliz - Paramount CA, US
Jonathan Pegan - Irvine CA, US
Joshua Kim - Irvine CA, US

International Classification:

A61B 5/0205
A61B 5/00
A61B 5/021
A61B 5/145
A61B 5/024
A61B 5/08

Abstract:

A method of estimating a continuous blood pressure waveform or a continuous blood pressure in a subject including: measuring an arterial blood pressure waveform or an arterial blood pressure with a sensor supported by a supporting structure comprising a polymeric substrate and connected to a processor and a transmitter, wherein the supporting structure is configured to press the sensor against a skin surface of a subject, wherein the sensor is configured to detect a biological metric of the subject, and wherein the processor is configured to quantify one or more signal(s) corresponding to the biological metric and the transmitter is configured to transmit the one or more signals to an external user system, and transforming the arterial blood pressure waveform or the arterial blood pressure to the continuous blood pressure waveform or the continuous blood pressure using a transfer function.

US Patent:

20200069193, Mar 5, 2020

Filed:

Nov 8, 2019

Appl. No.:

16/678626

Inventors:

- Oakland CA, US
Joshua Kim - Irvine CA, US
Gregory Washington - Irvine CA, US
Theron Frederick Lee Smith - Irvine CA, US
Floranne Tavailau Ellington - Irvine CA, US
Joseph Garcia - Irvine CA, US

International Classification:

A61B 5/022

Abstract:

Soft capacitive pressure sensors for continuous wearable health monitoring applications are described herein. Wrinkled gold thin films on elastomeric substrates are used as robust parallel plate electrodes to create a robust integration with the polymer, allowing repeated normal force to deform the thin film without failure. By incorporating micro-ridged structures that support the counter electrodes to create air cavities within the elastomeric dielectric layer, pressure sensitivity is further increased. The pressure sensors are configured to measure human physiological signals such as pressure exerted from a radial pulse on a skin's surface. The radial pulse pressure detected by the sensor can be correlated to an arterial blood pressure. Calibration of said pressure sensors using a neural network allows for determination of absolute blood pressure.

US Patent:

20190113326, Apr 18, 2019

Filed:

Dec 12, 2018

Appl. No.:

16/218297

Inventors:

- Oakland CA, US
Michelle Khine - Irvine CA, US
Mark Bachman - Irvine CA, US
Joshua Kim - Oakland CA, US

International Classification:

G01B 7/16
A61B 5/113
G01L 1/22

Abstract:

A method of making a sensor apparatus including placing a mask over a polymeric sheet, wherein the mask is configured to block regions of the polymeric sheet, depositing a conductive structure on the polymeric sheet at regions exposed through the mask, shrinking the polymeric sheet with conductive structure patterned on its surface by heating, and transferring the conductive structure to a flexible substrate.

US Patent:

20170281082, Oct 5, 2017

Filed:

Mar 30, 2017

Appl. No.:

15/474937

Inventors:

- Oakland CA, US
Nicole Eckmann - Folsom CA, US
Kimberly Veliz - Paramount CA, US
Jonathan Pegan - Irvine CA, US
Joshua Kim - Irvine CA, US

International Classification:

A61B 5/00
A61B 5/145
A61B 5/0205

Abstract:

An apparatus comprising a wearable device comprising a supporting structure, a sensor and an electronics module, wherein the supporting structure is configured to press the sensor against a skin surface of a subject, wherein the sensor is configured to detect a biological metric of the subject, and wherein the electronics module is configured to quantify and/or transmit one or more signal(s) corresponding to the biological metric. Some aspects relate to a method of monitoring a biological metric in a subject comprising: adorning a subject with the wearable device; and detecting the biological metric over a period of time in the subject with the wearable device. Other aspects relate to a method of treating a disease in a subject comprising: monitoring a biological metric in the subject over a period of time, and treating the subject with a therapeutic protocol, and monitoring the biological metric in the subject to assess treatment efficacy. Method are provided for estimating a central aortic pressure waveform in a subject comprising: measuring a radial artery pressure waveform in the subject and transforming the radial artery pressure waveform to a central aortic pressure waveform using a transfer function.

US Patent:

20170219331, Aug 3, 2017

Filed:

May 18, 2015

Appl. No.:

15/311990

Inventors:

- Oakland CA, US
Michelle KHINE - Irvine CA, US
Mark BACHMAN - Irvine CA, US
Joshua KIM - Oakland CA, US

International Classification:

G01B 7/16
A61B 5/113

Abstract:

A sensor apparatus including a flexible substrate and a wrinkled conductor disposed on the flexible substrate. In some embodiments, the conductor includes micro-scale invaginations. Also disclosed are methods of making a sensor apparatus, including: placing a mask over a polymeric sheet, wherein the mask is configured to block regions of the polymeric sheet, depositing a conductive structure on the polymeric sheet at regions exposed through the mask, shrinking the polymeric sheet with conductive structure patterned on its surface by heating, and transferring the conductive structure to a flexible substrate. Also disclosed are methods of sensing a health condition of a user or patient. The methods include coupling a sensor apparatus to a surface of a user or patient overlying structures to be monitored. The sensor apparatus may include a crumpled conductor capable of detecting strain. Strain is detected by directing current through the sensor apparatus during flexing of the surface and measuring a characteristic of the sensor apparatus based on the strain to generate an output for a user, indicative of the condition of the user or patient.

US Patent:

20170086709, Mar 30, 2017

Filed:

May 18, 2015

Appl. No.:

15/312030

Inventors:

- Oakland CA, US
Jonathan PEGAN - Irvine CA, US
Eugene LEE - Irvine CA, US
Mark BACHMAN - Irvine CA, US
Joshua KIM - Oakland CA, US
Gareth FORDE - Irvine CA, US
Dorsey LIGON - Grand Rapids MI, US

International Classification:

A61B 5/11
A61B 5/00
G06F 19/00

Abstract:

A wearable sensor apparatus is disclosed that includes a flexible substrate adapted to be coupled with a skin surface of an expectant mother. A conductor is disposed on the flexible substrate. The conductor can include micron-scale invaginations. The conductor can be capable of repeatable variation in resistance when subject to a strain. Also disclosed is a system for monitoring the health of a fetus in utero that includes a wearable sensor apparatus. The wearable sensor apparatus is configured to output a signal responsive to an electrical input. The system includes a computing system with one or more hardware processors. The computing system is programmed to implement a signal processing module configured to access the output signal from the wearable strain gauge and generate an output indicative of health of the baby in utero. The output can be based in part on the received output signal and previously stored correlations between signal data from the wearable strain gauge and observations of the system or of the mother. A user interface module can be provided and can be configured to display an output indicative of health of the baby in utero.