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Aerating system of anesthesia apparatus and respirator and pressure monitoring method

A ventilation system, airway pressure technology, applied in mechanical pressure/force control, fluid pressure control, respirator, etc., can solve problems such as unstable pressure monitoring, achieve stable pressure control, low cost, and avoid interference effects

Active Publication Date: 2009-01-07
SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a method and device for monitoring the pressure of the ventilation system to solve the problem of unstable pressure monitoring of the ventilation system of the existing anesthesia machines and ventilators

Method used

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  • Aerating system of anesthesia apparatus and respirator and pressure monitoring method
  • Aerating system of anesthesia apparatus and respirator and pressure monitoring method
  • Aerating system of anesthesia apparatus and respirator and pressure monitoring method

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Embodiment Construction

[0031] figure 1It is a schematic diagram of the air circuit system of the pressure monitoring device for the ventilation system of the anesthesia machine or ventilator according to the specific embodiment of the present invention. In this embodiment, the inhalation module includes an inhalation valve 2 , and the exhalation module includes an exhalation valve 7 , an electromagnetic proportional valve 6 and an air resistance 9 for controlling the closing pressure of the exhalation valve. During inhalation, the electromagnetic proportional valve 6 adjusts the closing pressure of the exhalation valve 7 by adjusting the size of the air flow passing through it, so as to achieve the purpose of closing the exhalation valve 7 at the set pressure. After the suction valve 2 is opened, the air supply starts at the set flow rate, and the driving gas flows through the pressure reducing valve 1 and the suction valve 2 through the flow sensor 3 of the suction valve and enters the outer cavity...

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Abstract

The invention discloses a pressure monitoring and controlling method used in an aerating system of a medical device. The pressure monitoring and controlling method comprises monitoring the confining pressure of an expiratory valve on a real-time basis, and regulating and maintaining the pressure and the set confining pressure of the expiratory valve at the same value; and monitoring the pressure of a patient terminal gas channel on a real-time basis, and regulating and maintaining the pressure to reach a set control pressure. The aerating system used in the medical facility comprises a gas path system and a pressure monitoring and controlling device. The pressure monitoring and controlling device comprises a parameter monitoring and controlling unit, a valve control unit and a master controller, wherein the parameter monitoring and controlling unit includes a first pressure detecting device placed in to the patient terminal gas channel in the gas path system, and a second pressure detecting device for monitoring and controlling the confining pressure of the expiratory valve in the gas path system. A breathing machine and an anaesthetic machine using the aerating system in the technical proposal monitor the pressure of a control branch of the expiratory valve therein and employ the pressure as the basis of the feedback control to effectively avoid the external disturbance, thereby realizing stable and reliable pressure control.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a ventilation system for ventilating a patient and a pressure monitoring method thereof, in particular to a ventilation system for an anesthesia machine or a ventilator, a pressure monitoring method thereof, and an anesthesia using the ventilation system and the pressure monitoring method machines and ventilators. Background technique [0002] The function of the anesthesia machine is to perform inhalation anesthesia and mechanical ventilation on the patient during the operation. Gas flow and airway pressure are the two most basic monitoring parameters of the anesthesia machine. The measurement accuracy and stability of gas flow and airway pressure not only determine the accuracy and safety of the anesthesia machine for controlling the ventilation process, but also play a decisive role in the ventilation mode and performance indicators that the anesthesia machine can achieve. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M16/00A61M16/01G05D16/00G05D15/00
Inventor 周小勇黄林涛潘瑞玲李新胜
Owner SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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