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Expiratory valve

A technology of exhalation valve and valve body, which is applied in the field of exhalation valve, can solve the problems of difficult cleaning and replacement, inconvenient disinfection, etc., and achieve the effect of low cost, easy cleaning and convenient disassembly

Active Publication Date: 2010-02-10
BEIJING AEONMED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some flow sampling devices directly package the bridge structure bypass and sensor design into one body. Although it is convenient to use and install, it is inconvenient to directly sterilize this part
Although some ventilators in the prior art use the bridge structure bypass and the sensor separately, the mesh-shaped air resistance is cold-packed or red-packed (heated) or bonded to the main air circuit.
It is not easy to clean and replace when the air block is blocked or damaged

Method used

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Embodiment Construction

[0025] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0026] Such as Figure 1 to Figure 4 As shown, the exhalation valve used in a ventilator according to the present invention includes a valve body 2, a top sleeve 4, a linear air resistance 5, a valve cover 7, a diaphragm 8, a diaphragm baffle 6, a mouthpiece 1 and a ball plug 3. Such as figure 2 As shown, the patient's expiratory airflow from figure 2 The direction of the three arrows in flows into the main road and passes through the linear air resistance 5 . In order to make the gas flowing through the main path change from laminar flow to turbulent flow, and to facilitate more accurate sampling, the linear air resistance 5 is provided with many mesh-like small holes (such as Figure 7 shown).

[0027] The valve body 2 is the base that carries the other parts and is usually made of aluminium. Such as Figure 5c As shown, the valve body ...

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Abstract

The invention discloses an expiratory valve. The valve comprises a valve body, a top cover, a linear air-resistor, a membrane baffle, a membrane and a valve cover, wherein a first connection part is arranged on the valve body; a second connection part is arranged on the top cover, and the first connection part of the valve body and the second connection part are connected; a plurality of net nest-shaped pores are arranged on the linear air-resistor, and one end of the linear air-resistor is limited by the top cover; the membrane baffle is used for supporting the control external force of a respirator; a groove part for receiving the membrane baffle is arranged on the membrane; and the valve cover is combined with the membrane, and is received in the valve body. Because the expiratory valve is connected and installed in a mode of screw threads, the expiratory valve has low cost, and is convenient for disassembly, cleaning, disinfection and maintenance, so that the expiratory valve can be neatly installed or replaced infinitely, and is suitable for batch production.

Description

technical field [0001] The invention relates to an exhalation valve, which is used in a ventilator. Background technique [0002] In the ventilator, not only the switch between inhalation and exhalation can be realized by controlling the opening and closing of the exhalation valve, but also PEEP (positive end-expiratory pressure) can be realized by controlling the opening degree of the exhalation valve exhaust valve. )Features. In order to make the ventilator convenient and accurate to control and monitor relevant technical parameters, it is necessary to set a sampling point near the exhalation valve to collect signals such as the flow rate and pressure of the patient's exhalation. The measurement of the flow usually adopts the bridge structure bypass for two-point sampling. In order to generate a certain pressure difference between the two sampling points, a set of air resistance is often designed in the main circuit. The air resistance is often designed in a mesh shape,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M16/20A61M39/22
Inventor 颜辉
Owner BEIJING AEONMED
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