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Method and system for patient-synchronized ventilatory assist with endotracheal through-flow

An auxiliary system and patient technology, applied in the directions of tracheal intubation, application, drug devices, etc., can solve the problems of incomplete elimination, increased risk of infarction, complicated dynamic overexpansion, etc.

Active Publication Date: 2013-05-01
ST MICHAELS HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The proposed method of using parallel chambers does not completely eliminate the volume that the patient re-breaths during inspiration
Therefore, the proposed method reduces, but does not optimize CO 2 Removal and minimization of CO 2 rebreathing problem
Also, this approach has been complicated by the problem of dynamic over-inflation due to constant inspiratory airflow
Other approaches using catheter lumens with valve function may increase the risk of infarction

Method used

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  • Method and system for patient-synchronized ventilatory assist with endotracheal through-flow
  • Method and system for patient-synchronized ventilatory assist with endotracheal through-flow
  • Method and system for patient-synchronized ventilatory assist with endotracheal through-flow

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Embodiment Construction

[0017] Aspects of the present disclosure generally address one or more issues related to the presence of dead space caused by a breathing circuit of a mechanical ventilator. The present disclosure also relates to ventilation assistance systems and methods including features that reduce anatomical dead space in a patient's airway.

[0018] The following terms are used throughout this disclosure:

[0019] Ventilation Assist System: A device adapted for medical use to assist a patient requiring respiratory support.

[0020] Respiratory Tract: Of the patient, the lungs, bronchi, trachea, pharynx, nose, and mouth through which air is breathed.

[0021] Air: Any gas composition suitable for use in a ventilatory assist system. In the context of this disclosure, the term "air" may refer to natural air, pure oxygen, natural air with additional oxygen added, oxygen mixed with other gases such as water vapor, or any combination thereof. The term can also refer to air expelled from a p...

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PUM

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Abstract

A ventilatory assist system and method are disclosed. The system comprises a tube for connection to a patient's airway, inspiratory and expiratory tube lumens connected to the tube, an inspiratory air source connected to the inspiration tube lumen, and a controller of air pressure in the expiratory tube lumen. The pressure controller is responsive to a physiological breathing signal representative of patient's inspiratory effort to allow air flow through the expiratory tube lumen during a patient's expiration phase, partially restricting the air flow through the expiratory tube lumen to a minimum air flow during a patient's inspiration phase. During both respiratory phases, a unidirectional air flow is produced through the inspiratory and expiratory tube lumens to prevent air expired by the patient from being breathed again. The physiological breathing signal allows synchronization of the ventilatory assist with breathing efforts of the patient.

Description

technical field [0001] The present disclosure relates to the field of ventilatory assistance systems. More specifically, the present disclosure relates to a method and system for patient-synchronized ventilation assistance by endotracheal through-flow. Background technique [0002] A recurring problem in patients with impaired respiratory function is reduced volume of ventilating lung tissue. This may be due to edema, collapsed lung, and / or other factors. If the volume of the air-transferring tissue / airway (eg, including the main bronchi, trachea, and upper airway) is maintained, the volume of the air-transferring tissue is reduced relative to the volume of the air-transporting tissue / airway. in for CO 2 In case of increased need to remove, if the ratio of dead space or dead volume in air delivery tissue / airway and in breathing circuits for mechanical ventilators relative to lung with intact ventilating tissue If it becomes abnormally large, the ventilatory contribution ...

Claims

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Application Information

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IPC IPC(8): A61M16/00A61M16/04
CPCA61M2016/161A61M2016/0018A61M16/0051A61M16/161A61M16/205A61M16/202A61M2016/0027A61M16/04A61M16/16A61M16/0003A61M2202/0208A61M2016/0021A61M16/0069A61M16/12A61M16/1005A61M16/0486A61M2016/205A61M2016/0486A61M2016/0033A61M2210/1014A61M2230/08A61M2230/60A61M16/0012A61M16/042A61B5/087A61B5/4836A61M16/125A61M16/024A61B5/389
Inventor C.辛德比J.贝克
Owner ST MICHAELS HOSPITAL
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