Automatic calibration device and method for anaesthesia machine

An anesthesia machine and automatic technology, which is applied in the field of anesthesia machines, can solve the problems that anesthesia machines do not have the automatic calibration function, and achieve the effects of saving maintenance costs, improving accuracy and consistency, and low operation difficulty

Pending Publication Date: 2022-02-25
河北谊安奥美医疗设备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of existing anesthesia machines that do not have the function of automatic calibration or can only calibrate the inspiratory flow, thereby providing an automatic calibration device and method for anesthesia machines

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  • Automatic calibration device and method for anaesthesia machine
  • Automatic calibration device and method for anaesthesia machine
  • Automatic calibration device and method for anaesthesia machine

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Embodiment Construction

[0032] The technical solutions provided by the present invention are further described below in conjunction with the examples.

[0033] Such as Figure 1-2 As shown, a kind of automatic calibration anesthesia machine provided by the present invention comprises inhalation valve, coil 1, APL valve 2, exhalation one-way valve 3, inspiratory one-way valve 4, soda lime tank 5, inspiratory probe 6. The exhalation probe 7 and probe sampling sensor, the automatic calibration anesthesia machine also includes: flow meter;

[0034] The flow meter is installed between the suction valve and the coil;

[0035] During calibration, the air outlet of the exhalation probe 7 of the absorption circuit is connected to the atmosphere, and the air inlet of the exhalation probe 7 of the absorption circuit is connected with the air outlet of the inhalation probe 6 .

[0036] The air outlet of the expiratory probe 7 of the absorption circuit is connected with the atmosphere through the calibration to...

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Abstract

The invention relates to the field of anaesthesia machines, in particular to an automatic calibration device and method for an anaesthesia machine. The air outlet of an expiration probe of an absorption loop is connected with the atmosphere, and the air inlet of the expiration probe is connected with the air outlet of the inspiration probe; the gas flow of an input gas source is controlled to be selected flow nodes in sequence; actual flow values, corresponding to the flow nodes, in the absorption loop are sequentially collected through a flow meter; and a voltage difference value between the inlet and the outlet of the inspiration probe and the expiration probe corresponding to the actual flow value of each node is acquired through an inspiration flow sensor and an expiration flow sensor so as to obtain a flow-voltage curve of the inspiration flow sensor and the expiration flow sensor. According to the automatic calibration device and method for the anaesthesia machine, the inspiration flow sensor and the expiration flow sensor can be calibrated at the same time, the inspiration flow sensor and the expiration flow sensor are both kept at quite high precision, an inspiration valve is accurately controlled, and the inspiration tidal volume and the expiration tidal volume are more accurate.

Description

technical field [0001] The invention relates to the field of anesthesia machines, in particular to an automatic calibration device and method for anesthesia machines. Background technique [0002] Pneumatic and electronically controlled anesthesia machine is the most widely used anesthesia machine at present. It introduces a stable high-pressure gas source as the power source, and the gas actually flowing into the machine control gas circuit is regulated by an electric control valve. The main controller The inhalation gas flow rate is controlled by the operation of this valve. This valve is generally called an inspiratory valve or an air delivery valve, and its accuracy directly determines the performance of the anesthesia machine. [0003] The inspiratory and exhalation ports of the patient on the anesthesia machine correspond to the inspiratory probe and the exhalation probe respectively. The inlet and outlet of the inspiratory probe and the exhalation probe have sampling ...

Claims

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Application Information

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IPC IPC(8): A61M16/01A61M16/20
CPCA61M16/01A61M16/0003A61M16/204A61M2016/003A61M2205/70A61M2205/18
Inventor 张凯吴艳美徐学利李杰
Owner 河北谊安奥美医疗设备有限公司
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