Gas mixing module and breathing machine and anesthesia machine with same

A gas mixing and mixing cavity technology, applied in the field of medical devices, can solve the problems of reducing battery life, difficult to achieve precise control, difficult to achieve large flow, etc., to ensure stable operation, improve positioning repeatability, and low cost Effect

Inactive Publication Date: 2010-07-07
BEIJING AEONMED
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Problems solved by technology

Among them, in the way of adjusting the oxygen concentration by relying on two flow proportional valves, due to the limitations of the ordinary flow proportional valve itself, it is difficult to achieve precise control at low flow rates, and it is not only very difficult to replace the high-precision small flow proportional valves. Difficult to meet the requirements of large flow rate and increase product cost accordingly
In devices that

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  • Gas mixing module and breathing machine and anesthesia machine with same
  • Gas mixing module and breathing machine and anesthesia machine with same

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Embodiment Construction

[0021] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims. The same components are denoted by the same reference numerals in the drawings.

[0022] refer to figure 1 , the air-oxygen mixing module of the present invention includes: a housing 5, a mandrel 2 and a stepping motor 9 for driving the mandrel 2, wherein a mixing chamber 52 and air on both sides of the mixing chamber are formed in the housing 5 The chamber 5 and the oxygen chamber 53, the air chamber 51 and the oxygen chamber 53 communicate with the mixing chamber 52 through the air outlet 512 and the oxygen outlet 532 respectively, so as to input air and pure oxygen into the mixing chamber respectively. In this example, if figure 1 As shown, the mandrel 2 passes through the air chamber 51, the mixing chamber 52 and the oxygen chamber 53 sequential...

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Abstract

The invention provides a gas mixing module, and a breathing machine and an anesthesia machine with the same. The gas mixing module comprises a shell (5), a mandrel (2), and a stepping motor (9), wherein the shell (5) has a mixing cavity (52), and a first cavity (51) and a second cavity (53) which are arranged on two sides of the mixing cavity (52) respectively, and the first cavity (51) and the second cavity (53) are communicated with the mixing cavity (52) through a first air outlet (512) and a second air outlet (532) respectively; the mandrel (2) passes through the first cavity (51), the mixing cavity (52) and the second cavity (53) axially in turn and has a shoulder (22) which is accommodated in the mixing cavity (52); and the stepping motor (9) drives the mandrel (2) to move axially, and the opening of the first air outlet (512) and the second air outlet (532) is changed simultaneously through the axial movement of the shoulder (22). The gas mixing module can accurately control the position of the shoulder of the mandrel in the mixing cavity, improve the positioning repeatability of the mandrel, and improve the accuracy and reliability of the breathing machine and the anesthesia machine.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a gas mixing module for mixing two different gases such as air and oxygen, and a ventilator and anesthesia machine with the module. Background technique [0002] During the use of medical devices such as ventilators and anesthesia machines, patients need to be mechanically ventilated. For patients undergoing treatment, the size control of ventilation and the adjustment of oxygen concentration are very important, especially for infants and critically ill patients. Accurate, sensitive and continuous adjustment of oxygen concentration from large tidal volume in adults to small tidal volume in infants determines the accuracy of the ventilator and also determines the grade of the ventilator. [0003] At present, the methods used to adjust the oxygen concentration of ventilators are divided into two different ways: relying on two flow proportional valves to control and adjust, relying o...

Claims

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Application Information

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IPC IPC(8): A61M16/10A61M16/00
Inventor 李捷任福立王军
Owner BEIJING AEONMED
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