Breathing machine

Abstract

The invention relates to a breathing machine which comprises a control system, an inhalation module and an exhalation module, wherein the exhalation module comprises a switching valve, an exhalation branch, a sputum excretion branch and a pressure regulating valve; the switching valve comprises a first joint, a second joint, and a switching element used for connecting or disconnecting the first joint and the second joint; the first end of the exhalation branch is connected with a patient end, and the second end of the exhalation branch is connected with the first joint of the switching valve; the first end of the sputum excretion branch is connected with the second joint of the switching valve, and the second end of the sputum excretion branch is connected with a negative pressure joint of a negative pressure source; the pressure regulating valve is arranged on the exhalation branch and is used for maintaining gas pressure of the exhalation branch to be in a preset range; and the gas pressure comprises positive pressure P+ and negative pressure P-. Therefore, the breathing machine disclosed by the invention has the advantages that a negative pressure sputum excretion function is increased on the basis of the existing breathing machine, normal human coughing can be simulated, and the problem that a clinical mechanical ventilation patient has sputum excretion difficulty is solved. Moreover, compared with the existing breathing machine and sputum excretion machine combination, the breathing machine disclosed by the invention is simple and compact in structure.

Description

technical field [0001] The invention belongs to the medical and health field, and in particular relates to a ventilator. Background technique [0002] The ventilator is widely used in clinical medicine. It is a vital medical device that can prevent and treat respiratory failure, reduce complications, save and prolong the life of patients; it can replace, control or change people's normal physiological breathing, increase Lung ventilation, improve respiratory function, reduce respiratory work consumption. [0003] During the use of the ventilator, different breathing parameters are often set for patients with different spontaneous breathing capabilities. However, none of the existing ventilators can evaluate the patient's spontaneous breathing ability, and cannot give suggested parameter settings. Therefore, the current judgment on whether the setting parameters are reasonable depends largely on the experience of doctors, especially the process of patients slowly getting of...

AI Technical Summary

Problems solved by technology

However, it still has the following disadvantages: first, it does not monitor and treat the respiratory muscles; second, it still adds a separate negative pressure branch outside the air circuit of the ventilator, and does not really integrate the expectoration branch into the ventilator. The air circuit of the ventilator increases the complexity of the system and cannot coordinate the work of the two well; third, the negative pressure source of the ventilator is composed of an air storage tank and a vacuum pump, the structure is too simple, and it is difficult to balance the volume of the device And equipment effectiveness requirements: If the volume of the air storage tank is small or the flow rate of the vacuum pump is small, it is difficult to quickly build up the pressure of the air storage tank during the expectoration operation, forming continuous and effective expectoration, and even causing the patient to expel Insufficient air; if the volume of the air storage tank is large enough or the flow rate of the vacuum pump is large enough, the machine will appear cumbersome; fourth, its negative pressure branch does not have sufficient safety and monitoring mechanisms to ensure the safety of patients

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