Respirator for autonomous respiration provocative test

Abstract

The invention provides a respirator for an autonomous respiration provocative test. The respirator comprises first air sources for storing high-pressure carbon dioxide and second air sources for storing high-pressure oxygen, wherein the first air sources and the second air sources are respectively connected with an air mixing controller through a first pipeline and a second pipeline, the air mixing controller is connected with a respiration controller through a third pipeline, and an output end of the respiration controller is connected with a trachea route of a patient through a fourth pipeline; and carbon dioxide concentration monitoring devices are separately arranged at the end close to the patient of the fourth pipeline and the third pipeline and used for detecting the carbon dioxidecontent of sucked air and exhaled air by the patient. A conventional manner that during conventional test, a patient slowly generates carbon dioxide is changed into a manner that carbon dioxide from outside is precisely controlled to be mixed with oxygen, durable mechanical ventilation is realized, the carbon dioxide in bodies can achieve the test requirement level, the patient is good in tolerance, repeated blood drawing for detection is not needed, the success rate of the test is high, and the respirator is broad in promotion prospects.

Description

technical field [0001] The invention belongs to the technical field of auxiliary medical appliances, and in particular relates to a respirator used for a spontaneous breathing challenge test. Background technique [0002] Severe traumatic brain injury, cerebral hemorrhage, cerebral infarction and other severe brain injuries require a brain death judgment in order to judge the prognosis, or to judge whether organs can be donated. The judgment of brain death involves multiple examinations, one of which is the spontaneous breathing provocation test, and brain death can only be diagnosed if the spontaneous breathing provocation test is negative. The so-called spontaneous breathing stimulation test means that the patient has no spontaneous breathing in the normal state, but at this time there is no spontaneous breathing, it may not be true that there is no spontaneous breathing, it may be because the respiratory center has not received enough stimulation, so it is necessary to st...

AI Technical Summary

Problems solved by technology

However, due to various reasons, the proportion of patients who can successfully complete the test is very low, less than 50%. These patients often have lung injury, lung infection or other lung diseases, and the oxygen content in arterial blood decreases rapidly in a short period of time, resulting in unstable heartbeat and blood pressure, which makes the test impossible

Even for patients with good lung function, because such patients are generally in a state of low metabolism, carbon dioxide rises very slowly, and blood carbon dioxide cannot be directly observed, so blood needs to be drawn and sent to a laboratory for examination (hospitals with better conditions can also do it at the bedside). inspection, but it also requires waiting time), and it often occurs that multiple inspections are not up to standard and needs to be re-examined offline, which is not only time-consuming, but also increases the patient's injury after multiple blood tests

[0004] To sum up, the existing conventional spontaneous breathing provocation test is complicated to operate, takes a long time, and requires blood tests, which increases the damage of patients. The biggest problem is that a large number of patients cannot complete the test because they cannot tolerate hypoxia. Making brain death undiagnosable or less reliable

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