Methods and systems for endobronchial diagnostics

Patent metadata

Field	Value
Publication number	US-11819328-B2
Application number	US-202117163173-A
Country	US
Kind code	B2
Filing date	Jan 29, 2021
Priority date	Jul 1, 2010
Publication date	Nov 21, 2023
Grant date	Nov 21, 2023

Abstract

Methods and systems for targeting, accessing and diagnosing diseased lung compartments are disclosed. The method comprises introducing a diagnostic catheter with an occluding member at its distal end into a lung segment via an assisted ventilation device; inflating the occluding member to isolate the lung segment; and performing a diagnostic procedure with the catheter while the patient is ventilated. The proximal end of the diagnostic catheter is configured to be attached to a console. The method may also comprise introducing the diagnostic catheter into the lung segment; inflating the occluding member to isolate the lung segment; and monitoring blood oxygen saturation. The method may further comprise introducing the diagnostic catheter into the lung segment; determining tidal flow volume in the lung segment; determining total lung capacity of the patient; and determining a flow rank value based on the tidal flow volume of the lung segment and the total lung capacity.

First claim

What is claimed is:

1. A method of assessing the functionality of a lung segment in a patient, the method comprising:
introducing a diagnostic catheter into the lung segment, wherein the diagnostic catheter comprises a distal end comprising an occluding member and a proximal end configured to be attached to a console;
inflating the occluding member to isolate the lung segment;
monitoring blood oxygen saturation of the patient; and
determining functionality of the lung segment based on a rate of change of blood oxygen concentration.

2. The method of claim 1 , wherein the monitoring step comprises monitoring oxygen saturation before and after the inflating step.

3. The method of claim 1 , further comprising deflating the occluding member after the monitoring step.

4. The method of claim 3 , further comprising monitoring oxygen saturation after the deflating step.

5. The method of claim 1 , wherein the monitoring step is conducted by a pulse oximeter.

Assignees

• Pulmonx Corp

Inventors

• Mantri Surag
• Radhakrishnan Srikanth

Classifications

• A61B5/14552 Primary

  Details of sensors specially adapted therefor · CPC title

• A61B1/00082 Primary

  Balloons · CPC title

• A61B1/2676

  Bronchoscopes · CPC title

• A61B5/08

  Measuring devices for evaluating the respiratory organs · CPC title

• A61B5/085

  Measuring impedance of respiratory organs or lung elasticity · CPC title