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A low-flow expiratory cut-off device

A cut-off device and low-flow technology, applied in the field of medical equipment, to achieve the effect of short maintenance cycle, simple structure and long service life

Active Publication Date: 2021-07-09
RWD LIFE SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For this reason, the present invention just aims to solve the problems existing in the above-mentioned traditional pinch valve type low-flow exhalation cut-off device, thereby proposing an Low-flow expiratory cut-off device with high performance and wide application range

Method used

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  • A low-flow expiratory cut-off device
  • A low-flow expiratory cut-off device

Examples

Experimental program
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Embodiment

[0031] This embodiment provides a low-flow expiratory cut-off device, which is used in a small animal ventilator, and plays a role of fast and effective cut-off during low-flow exhalation, preventing the small animal lungs from rapidly shrinking alveoli during exhalation, improving the The alveolar-arterial oxygen partial pressure difference can promote the regression of pulmonary interstitial and alveolar edema, reduce intrapulmonary shunt, and improve oxygenation and lung compliance.

[0032] The low-flow expiratory cut-off device described in this embodiment is as Figure 1-3 As shown, it includes a two-position two-way solenoid valve 1, and the two-position two-way solenoid valve 1 is a normally open solenoid valve. The iron core moves down, the auxiliary valve plug is pressed down, the auxiliary valve is closed, and the pressure in the main valve cup rises. When the pressure rises to a certain value, the upper and lower pressure differences of the main valve cup are the s...

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Abstract

The invention discloses a low-flow exhalation cut-off device, which includes a two-position two-way solenoid valve, the two-position two-way solenoid valve is installed on the solenoid valve seat, and the channel port of the two-position two-way solenoid valve is connected to a One end of the connecting tube, the other end of the connecting tube is connected to the exhalation mechanism of the ventilator. The cut-off function of the experimental equipment small animal ventilator in the exhalation circuit is realized through the two-position two-way solenoid valve. The solenoid valve responds quickly and can quickly and efficiently control the positive end-expiratory pressure of the small animal ventilator, and its cut-off performance is excellent. , rapid response and simple structure, which solves the problems of rapid aging of the traditional pinch valve breathing cut-off device, short maintenance cycle and easy damage to the experimental subjects. The device has a long service life and high safety performance, and can be widely used in scientific research Institutions, universities and other biological experiment fields.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and relates to a small animal ventilator, in particular to a low-flow expiratory stop device for the small animal ventilator. Background technique [0002] The ventilator is an artificial mechanical ventilation device, which is used to assist the function of controlling breathing to achieve gas exchange in the lungs. Among them, the animal ventilator is a common experimental equipment, widely used in basic medicine, clinical medicine and animal medicine and other sciences. Artificial respiration, respiratory management, first aid for animals, respiratory therapy, etc. in research experiments are precisely controlled, convenient and practical, and do not require high-pressure air sources. [0003] Small animals such as mice are key and important experimental models for medical research. The diagnosis, treatment and related mechanism research of various diseases can be simulated through thi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M16/20A61D7/00
CPCA61D7/00A61M2250/00A61M16/202
Inventor 李成
Owner RWD LIFE SCI
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