Medical ventilator and method of continuously measuring airway resistance and compliance for medical ventilator

A ventilator and compliance technology, applied in the field of medical respiratory equipment, can solve the problems of inability to adjust the patient's respiratory parameters in real time, insufficient ventilation of the patient, low airway pressure and ventilation volume, etc., and achieve simple structure, precise control, and convenient use Effect

Active Publication Date: 2017-01-04
CURATIVE MEDICAL TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the ventilation process of the patient, the respiratory parameters of the patient cannot be adjusted in real time by monitoring the respiratory resistance of the patient, which may easily lead to excessively

Method used

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  • Medical ventilator and method of continuously measuring airway resistance and compliance for medical ventilator
  • Medical ventilator and method of continuously measuring airway resistance and compliance for medical ventilator
  • Medical ventilator and method of continuously measuring airway resistance and compliance for medical ventilator

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specific Embodiment approach

[0014] Medical ventilator of the present invention, its preferred embodiment is:

[0015] Including a pressure control device, the pressure control device shown is provided with an air source input port, an air flow control port and an air flow output port, the air source input port is connected to the air source, the air flow control port is connected to a solenoid valve, and the air flow output port The mouth is connected to an airflow sensor and a pressure sensor for measuring the patient's airway pressure.

[0016] The above-mentioned medical ventilator of the present invention realizes the method for continuously measuring and calculating airway resistance and compliance, and its preferred specific embodiment is: the medical ventilator adopts the positive airway pressure ventilation mode, and in the positive airway pressure ventilation mode, A high-frequency oscillating pressure whose amplitude, frequency and duration can be adjusted is superimposed on the pressure level....

specific Embodiment approach 1

[0043] Specific implementation plan one, such as figure 1 Shown:

[0044] The medical ventilator includes an air source 1, a solenoid valve 2, a pressure control device (such as a pressure control valve) 3, and the pressure control device 3 is provided with an air source input port A, an air flow control port B and an air flow output port C, and the air flow output port C An airflow sensor 4 and a pressure sensor 5 for measuring the patient's airway pressure are connected.

[0045] In a specific embodiment, an airway pressure sensor with high sensitivity and high-speed response can be used, and the system can obtain the airway pressure at the current time in time, and use a certain control algorithm, such as a linear control algorithm, according to the difference between the current pressure and the predetermined pressure, The driving control amount is calculated, and the difference between the airway pressure and the target set pressure is adjusted, so that the airway pressu...

specific Embodiment approach 2

[0049] Specific implementation scheme two, such as Figure 2a , Figure 2b Shown:

[0050] When the positive airway pressure ventilation mode is single-level continuous positive airway pressure ventilation mode, superimpose the high-frequency oscillating pressure and flow waveform schematic diagram on the continuous positive airway pressure level, wherein the pressure oscillation amplitude is △P and the frequency is f and duration t.

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Abstract

The invention discloses a medical ventilator and a method of continuously measuring airway resistance and compliance for the medical ventilator. The medical ventilator comprises a pressure control device, the pressure control device is provided with an air source input port, an air flow control port and an air flow output port, and the air flow output port is connected with an air flow sensor and a pressure sensor that measures airway pressure of a patient; the medical ventilator employs an airway positive pressure ventilation mode, a high-frequency oscillatory pressure with adjustable amplitude, frequency and duration is added to the pressure level of the airway positive pressure ventilation mode, airway resistance and lung compliance of the respiratory system are measured through the high-frequency oscillatory pressure and flow, the airway resistance and the lung compliance are continuously monitored, and the medical ventilator and the method are used to measure respiratory resistance and compliance at the premise of not interfering normal respiratory cycle of a patient and provide continuous monitoring for the respiratory resistance and compliance. The medical ventilator and the method will help a doctor to set parameters of a mechanical ventilator such that ventilation state of a patient is adjusted in time and ventilation therapeutic efficiency of the ventilator is improved.

Description

technical field [0001] The invention relates to a medical breathing apparatus, in particular to a medical ventilator and a method for continuously measuring airway resistance and compliance thereof. Background technique [0002] In the existing clinical mechanical ventilation technology, including invasive and non-invasive positive pressure ventilation, in order to adopt appropriate airway pressure, flow rate and ventilation volume for patients, it is necessary to use special testing instruments or the experience of medical personnel to monitor the patient's respiratory tract before ventilation. resistance, etc. to be tested or estimated. During the ventilation process of the patient, real-time adjustment of the patient's breathing parameters cannot be performed by monitoring the patient's breathing resistance, etc., which may easily lead to excessively high or low airway pressure and ventilation volume. Excessive pressure can easily cause ventilation side effects such as a...

Claims

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Application Information

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IPC IPC(8): A61M16/00
CPCA61M16/00A61M16/0003A61M2016/0027A61M2016/003A61M2205/3327A61M2205/3331A61M2230/46A61M2230/005
Inventor 张晓民袁越阳
Owner CURATIVE MEDICAL TECH INC
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