Matching structure for piston and piston cylinder of sputum ejection machine gas vibration generating mechanism

Abstract

A matching structure for a piston and a piston cylinder of a sputum ejection machine gas vibration generating mechanism belongs to the technical field of medical instruments. The sputum ejection machine gas vibration generating mechanism comprises a motor fixing seat, a piston pump motor, an eccentric disk and a connecting rod, the matching structure for the piston and the piston cylinder comprises a piston body and a piston cylinder body, one end of the piston body forms a small end, a pair of shaft holes is arranged at the small end, one end of the connecting rod is connected with the corresponding shaft hole, the other end of the piston body forms a large end, a pair of piston ring grooves is arranged on the outer wall of the large end, a piston ring is embedded into each piston ring groove, the bottom of the piston cylinder body is provided with a fixing seat, an air inlet valve hole and an air outlet valve hole are arranged on a wall body of one end of the piston cylinder body, an air inlet valve is arranged on the air inlet valve hole, an air outlet valve is arranged on the air outlet valve hole, an air inlet pipe joint and an air outlet pipe are fixed onto the outer wall ofthe wall body. The matching structure has the advantages that compressed air in a piston cylinder cavity is prevented from escaping, sputum ejection effects are improved for patients having difficulty in sputum ejection, and the integral structure is simple.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a cooperation structure of a piston and a piston cylinder of a gas vibration generating mechanism of an expectorant machine. Background technique [0002] With the increase of environmental pollution caused by the development of industry and the acceleration of the aging process of the population, the number of patients with lung diseases is increasing year by year. Since 2001, more than 3 million patients have died of chronic obstructive pulmonary disease in the world every year. The third leading cause of death worldwide. During the course of chronic obstructive pulmonary disease, patients manifest cough, sputum, shortness of breath and / or wheezing, increased sputum volume, purulent or sticky purulent, and even accompanied by inflammation such as fever. Many patients especially Elderly and infirm patients are often difficult to cough up sputum smoothly by t...

AI Technical Summary

Problems solved by technology

This method of providing oscillating gas for the interlayer air cavity of the airbag vest has the shortcoming of low working efficiency, because a part of the compressed air in the shell cavity of the housing will flow from the air induction mechanism during the movement of the first and second eardrum discs. The fan end leaks or escapes, so that the compressed air cannot be fully supplied to the airbag vest

It seems that this shortcoming can be compensated by increasing the working speed of the power machine, but increasing the working speed of the power machine will cause the following technical problems. First, it is difficult or even impossible for the action frequency of the first and second tympanic discs to match the patient's breathing rate. The second is to waste the power of the power machine, that is, the electric energy of the motor

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