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Expiratory flow limitation detection via flow resistor adjustment

A blocker, airflow technology, used in respirator, sensor, drug device, etc.

Pending Publication Date: 2020-10-23
KONINKLJIJKE PHILIPS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] For example, NEP methods i) do not require patient cooperation, ii) require negative pressure (or at least positive pressure), and iii) can cause upper airway artifacts

Method used

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  • Expiratory flow limitation detection via flow resistor adjustment
  • Expiratory flow limitation detection via flow resistor adjustment
  • Expiratory flow limitation detection via flow resistor adjustment

Examples

Experimental program
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Effect test

Embodiment Construction

[0024] As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. As used herein, the statement that two or more parts or components are "coupled" shall mean that said parts are joined, either directly or indirectly (i.e., through one or more intermediate parts or components, wherever linking occurs). come together or work together. As used herein, "directly coupled" means that two elements are in direct contact with each other. As used herein, "fixedly coupled" or "fixed" means that two components are coupled so as to move as one while maintaining a constant orientation relative to each other. As used herein, the term "or" means "and / or" unless the context clearly dictates otherwise.

[0025] As used herein, the word "unitary" means that a component is created as a single piece or unit. That is, a component that includes multiple pieces that are created separately and then coupled together as a unit is not...

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PUM

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Abstract

A system for detecting EFL of a patient is provided. The system comprises an inhalation passage; an exhalation passage; a sensor for measuring flow-volume information of the exhaled air through an exhalation passage; a flow resistor positioned in the exhalation passage and being adjustable to provide an exhalation resistance in the exhalation passage; and a computer system. In one embodiment, oneor more physical processors of the computer system are programmed with computer program instructions which, when executed cause the computer system to: determine a reference expiratory flow-volume curve using flow-volume information of the exhaled air through the exhalation passage when a reference exhalation resistance is provided by the flow resistor in the exhalation passage; and determine a perturbed expiratory flow- volume curve using flow-volume information of the exhaled air through the exhalation passage when a lowered exhalation resistance is provided by the flow resistor in the exhalation passage.

Description

[0001] Cross References to Related Applications [0002] This patent application is based on 35 U.S.C. §119(e) claiming the benefit of priority to U.S. Provisional Application No. 62 / 610,736, filed December 27, 2017, the contents of which are incorporated herein by reference. technical field [0003] The present disclosure relates to methods and systems for detecting expiratory flow limitation (EFL) in a patient. Background technique [0004] Chronic obstructive pulmonary disease (COPD) is a public health problem. It is the fourth leading cause of chronic morbidity and mortality in the United States, affecting more than 24 million Americans. It is the third leading cause of death in the United States after heart disease and cancer, and by 2020 it is projected to be the third leading cause of death worldwide. The increasing mortality rate is driven worldwide by the expanding epidemic of smoking and an aging population. [0005] COPD is an umbrella term used to describe pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/08A61B5/087A61B5/097A61B5/093A61B5/00
CPCA61B5/7221A61B5/7246A61B5/7264A61B5/7267A61B5/742A61B5/7475A61B5/0803A61B5/087A61B5/0935A61B5/097A61B2560/0431A61B2562/0247A61B5/7271A61B5/0871A61B5/4836G16H20/40G16H50/20G16H40/63A61M16/0866A61M2016/0036A61M2230/46A61M16/024A61M16/0003A61M2016/0042A61M2205/50A61M2206/10
Inventor F·比卡里奥W·A·特鲁什切尔
Owner KONINKLJIJKE PHILIPS NV
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