Low-flow expiration cut-off device

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

Active Publication Date: 2018-04-13
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 l

Method used

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  • Low-flow expiration cut-off device

Examples

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Example Embodiment

[0030] Example

[0031] This embodiment provides a low-flow exhalation cut-off device, which is used in a small animal ventilator, which has a rapid and effective cut-off effect during low-flow exhalation, and prevents the lungs of small animals from rapidly shrinking and increasing alveoli during exhalation. Alveolar-arterial oxygen partial pressure difference promotes the regression of pulmonary interstitial and alveolar edema, reduces intrapulmonary shunt to improve oxygenation and lung compliance.

[0032] The low-flow expiratory cut-off device in this embodiment is as Figure 1-3 As shown, it includes a two-position two-way solenoid valve 1. The two-position two-way solenoid valve 1 is a normally open solenoid valve. The working principle of the normally open solenoid valve is: the solenoid valve coil is energized due to the action of suction. The iron core moves down, the auxiliary valve plug is pressed down, the auxiliary valve closes, and the pressure in the main valve cup...

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Abstract

The invention discloses a low-flow expiration cut-off device. The low-flow expiration cut-off device comprises a two-position two-way electromagnetic valve which is installed on an electromagnetic valve base, a porthole of the two-position two-way electromagnetic valve is connected to one end of a connection pipe, and the other end of the connection pipe is connected to an expiration mechanism ofa ventilator. The cut-off function of an experimental device, namely the small animal ventilator, is achieved in an expiration loop through the two-position two-way electromagnetic valve, the electromagnetic valve is quick in response, the positive end-expiratory pressure of the small animal ventilator can be quickly and efficiently controlled, the low-flow expiration cut-off device is excellent in cut-off performance, quick in response and simple in structure, the problems that a traditional pinch valve type expiration cut-off device is high in pipeline aging speed and short in maintenance period and easily causes harm to an experiment object are solved, and the device is long in service life, high in safety performance, and capable of being widely used in the field of biological experiments of scientific research institutions and colleges and universities.

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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IPC IPC(8): A61M16/20A61D7/00
CPCA61D7/00A61M2250/00A61M16/202
Inventor 李成
Owner RWD LIFE SCI
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