US 12,343,112 B2
Device and method for diagnosing vessel occlusion
Yince Loh, Seattle, WA (US); Kendall S Hartung, Carnation, WA (US); Leo C Bolero, Brisbane (AU); Michael E Baum, Bellevue, WA (US); and David H Gusdorf, Cle Elum, WA (US)
Assigned to Loh Medical Holdings, LLC, Seattle, WA (US)
Filed by Loh Medical Holdings LLC, Seattle, WA (US)
Filed on May 24, 2024, as Appl. No. 18/674,505.
Application 16/685,985 is a division of application No. 15/828,840, filed on Dec. 1, 2017, abandoned.
Application 18/674,505 is a continuation of application No. 18/423,744, filed on Jan. 26, 2024.
Application 18/423,744 is a continuation in part of application No. 16/685,985, filed on Nov. 15, 2019, abandoned.
Claims priority of provisional application 62/517,549, filed on Jun. 9, 2017.
Claims priority of provisional application 62/486,177, filed on Apr. 17, 2017.
Prior Publication US 2024/0306915 A1, Sep. 19, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/00 (2006.01); A61B 5/026 (2006.01); A61B 8/00 (2006.01); A61B 8/06 (2006.01); A61B 8/08 (2006.01)
CPC A61B 5/0042 (2013.01) [A61B 5/0261 (2013.01); A61B 5/6803 (2013.01); A61B 5/7282 (2013.01); A61B 8/06 (2013.01); A61B 8/0891 (2013.01); A61B 8/4209 (2013.01); A61B 8/4227 (2013.01); A61B 8/5223 (2013.01); A61B 5/684 (2013.01); A61B 8/4254 (2013.01); A61B 8/488 (2013.01); A61B 2576/026 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A portable head-mounted diagnostic device for placing on a head of a patient for diagnosing conditions consistent with the existence of a blockage of a blood vessel in the brain of the patient, such as a large vessel occlusion, comprising:
a sensor support structure having a first signal generation device and at least one corresponding first reflected signal sensor located on one side of the sensor support structure and further having a second signal generation device and at least one corresponding second reflected signal sensor located on the opposite side of the sensor support structure, symmetric to the first signal generation device and to the at least one first reflected signal sensor;
a control assembly having an alert screen and storing a threshold value;
a head engagement assembly having a temple arm structure and a pair of nose supports;
wherein the sensor support structure, the control assembly and the head engagement assembly are connected to one another and the distance between the pair of nose supports, the temple arm and the sensor support structure is fixed such that when the portable head-mounted diagnostic device is placed on the head of the patient, the head engagement assembly places the first signal generation device and the at least one corresponding first reflected signal sensor in contact with the skin of the patient at approximately the temple area of the left side of the head of the patient, and places the second signal generation device and the at least one corresponding second reflected signal sensor in contact with the skin of the patient at approximately the temple area of the right side of the head of the patient; wherein the second signal generation device and the at least one corresponding second reflected signal sensor are in a position on the head of the patient that is symmetric to the first signal generation device and the at least one corresponding first reflected signal sensor that are in contact with the skin of the patient at approximately the temple area of the left side of the head of the patient;
wherein, in use, the first signal generation device transmits a single signal in a wavelength from a range of approximately 380 nanometers to 1 millimeter into the left side of the brain of the patient that hits a first blood vessel cluster, creating a first reflected signal on the left side of the brain and, concurrently, the second signal generation device transmits a single signal in a wavelength from a range of approximately 380 nanometers to 1 millimeter into the right side of the brain of the patient that hits a second blood vessel cluster, creating a second reflected signal on the right side of the brain;
wherein, in use, the at least one first reflected signal sensor receives the first reflected signal and the control assembly converts the received first reflected signal into a left side data point amplitude value, and the at least one second reflected signal sensor receives the second reflected signal and the control assembly converts the received second reflected signal into a right side data point amplitude value;
wherein the control assembly, using a single reflection datapoint capture of the first and second blood vessel clusters, calculates the difference between the left side data point amplitude value and the right side data point amplitude value and compares the calculated difference between the left side data point amplitude value and the right side data point amplitude value to the threshold value stored in the control assembly to determine if a large vessel occlusion condition exists, without the need to measure continuous blood flow in the first and second blood vessel clusters; and
wherein when a large vessel occlusion exists, the control assembly generates an alert on the alert screen that a large vessel occlusion exists.