System and method for detecting and/or monitoring the presence of at least one of pneumothorax, hemopneumothorax, or hemothorax in a living subject using one or more light sources and one or more light detectors

Patent metadata

Field	Value
Publication number	US-12336805-B2
Application number	US-202217577659-A
Country	US
Kind code	B2
Filing date	Jan 18, 2022
Priority date	Jan 20, 2021
Publication date	Jun 24, 2025
Grant date	Jun 24, 2025

Abstract

A system for detecting and/or monitoring at least one of pneumothorax, hemopneumothorax, or hemothorax using one or more light sources and one or more light detectors. The system includes one or more light sources adapted to be placed on skin of a living subject. The one or more light detectors are adapted to be placed on the skin of the living subject. A processing subsystem is coupled to the one or more light sources and the one or more light detectors detects and/or monitors the presence of at least one of pneumothorax, hemopneumothorax, or hemothorax in the living subject.

First claim

What is claimed is:

1. A system for detecting and/or monitoring at least one of pneumothorax, hemopneumothorax, or hemothorax using one or more light sources and one or more light detectors, the system comprising:
one or more light sources adapted to be placed on skin of a living subject;
one or more light detectors adapted to be placed on the skin of the living subject;
the one or more light sources are configured to emit light into tissue of the living subject and the one or more light detectors are configured to detect light from the tissue and generate one or more physiological output signals, the one or more light sources configured to emit light at two or more predetermined wavelengths and the one or more light detectors configured to generate the physiological output signals responsive to the two or more wavelengths, wherein one of the predetermined wavelengths is configured to target oxyhemoglobin chromophores and another of the predetermined wavelengths is configured to target deoxyhemoglobin chromophores;
a processing subsystem coupled to the one or more light sources and the one or more light detectors, the processing subsystem responsive to the one or more physiological output signals and configured to detect and/or monitor the presence of at least one of pneumothorax, hemopneumothorax, or hemothorax in the living subject; and wherein the one or more light sources, the one or more light detectors, and the processing subsystem are housed in an adhesive patch attachable to the living subject and the adhesive patch includes an outlined needle zone, the adhesive patch attachable to the living subject using a physiological reference point on the living subject to ensure the outlined needle zone is located at an intercostal space of the living subject for insertion of a needle to treat at least one of pneumothorax, hemopneumothorax, or hemothorax.

2. The system of claim 1 in which the one or more light sources are configured to emit light which penetrates a thoracic cavity of the living subject at one or more predetermined penetration depths and the one or more light detectors are configured to detect at least one of reflected light from tissue between a lung of the living subject and the skin or reflected light from the lung of the living subject and generate output signals.

3. The system of claim 2 in which the processing subsystem is responsive to the output signals and is configured to detect and/or monitor the presence of pneumothorax, hemopneumothorax, or hemothorax based on an amount of light reflected or not reflected from the thoracic cavity.

4. The system of claim 2 in which the one or more light detectors are spaced from the one or more light sources by one or more predetermined separation distances such that the one or more light detectors detect at least one of the light reflected from tissue between the lung and the skin of the living subject or light reflected from the lung of the living subject and generate the output signals.

5. The system of claim 4 in which the processing subsystem is configured to generate one or more tomography curves representative of the amount of reflected light from varying penetration depths and to detect and/or monitor the presence of pneumothorax, hemopneumothorax, or hemothorax based on the shape of the one or more tomography curves.

6. The system of claim 1 in which the processing subsystem is responsive to the one or more physiological output signals and is configured to determine at least one of a respiration rate of the living subject, a tissue oxygen saturation of the living subject, blood oxygenation of the living subject, or a heart rate of the living subject.

7. The system of claim 6 in which the processing subsystem is configured to determine characteristic change in the respiration rate of the living subject to detect and/or monitor the presence of at least one of pneumothorax, hemopneumothorax, or hemothorax in the living subject.

8. The system of claim 6 in which the processing subsystem is configured to determine at least one of a characteristic change in the tissue oxygen saturation or blood oxygenation to detect and/or monitor the presence of at least one of pneumothorax, hemopneumothorax, or hemothorax in the living subject.

9. The system of claim 6 in which the processing subsystem is configured to determine characteristic change in the heart rate to detect and/or monitor the presence of at least one of pneumothorax, hemopneumothorax, or hemothorax in the living subject.

10. The system of claim 6 in which the processing subsystem is configured to determine at least one of a characteristic change in the respiration rate of the living subject, a characteristic change in the tissue oxygen saturation of the living subject, a characteristic change in blood oxygenation of the living subject, or a characteristic change in the heart rate of the living subject to detect and/or monitor the presence of at least one of pneumothorax, hemopneumothorax, or hemothorax in the living subject.

11. The system of claim 1 in which the one or more light sources include near infrared spectroscopy (NIRS) light sources.

12. The system of claim 1 in which the one or more light sources are adapted to be placed above a rib of the living subject and configured to emit light into the rib of the living subject and the one or more light detectors are adapted to be placed over the rib and configured to detect reflected light from the rib and generate one or more physiological output signals.

13. The system of claim 12 in which the processing subsystem is responsive to the one or more physiological output signals and is configured to determine a respiration rate of the living subject.

14. The system of claim 13 in which the processing subsystem is configured to determine characteristic change in the respiration rate of the living subject to detect and/or monitor the presence of at least one of pneumothorax, hemopneumothorax, or hemothorax in the living subject.

15. The system of claim 1 in which the one or more light sources are placed over at least a portion of an intercostal space of the living subject and the one or more light detectors are adapted to be placed over at least a portion of the intercostal space and configured to detect reflected light from the intercostal space and generate one or more physiological output signals.

16. The system of claim 15 in which the processing subsystem is responsive to the one or more physiological output signals and is configured to determine at least one of a respiration rate of the living subject, a tissue oxygen saturation of the living subject, blood oxygenation of the living subject, or a heart rate of the living subject.

17. The system of claim 16 in which the processing subsystem is configured to determine characteristic change in the respiration rate of the living subject to detect and/or monitor the presence of at least one of pneumothorax, hemopneumothorax, or hemothorax in the living subject.

18. The system of claim 16 in which the processing subsystem is configured to determine characteristic change in the tissue oxygen saturation to detect and/or monitor the presence of at least one of pneumothorax, hemopneumothorax, or hemothorax in the living subject.

19. The system of claim 16 in which the processing subsystem is configured to determine characteristic change in the heart rate to detect and/or monitor the presence of at least one of pneumothorax, hemopneumothorax, or hemothorax in the living subject.

20. The system of claim 16

Assignees

• Vivonics Inc

Inventors

• Myers Ryan
• Dimatteo Kristian
• Dupnik Michaelina

Classifications

• A61B5/02405

  Determining heart rate variability · CPC title

• A61B5/0075

  by spectroscopy, i.e. measuring spectra, e.g. Raman spectroscopy, infrared absorption spectroscopy (A61B5/0071 takes precedence) · CPC title

• A61B5/14542

  for measuring blood gases (A61B5/14551 takes precedence) · CPC title

• A61B5/6833

  Adhesive patches · CPC title

• A61B5/0073 Primary

  by tomography, i.e. reconstruction of 3D images from 2D projections (A61B5/0066 takes precedence) · CPC title