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...

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