Exhalation acquisition device for liver disease patients and photo-acoustic detection method for ammonia and methyl mercaptan in exhalations

Abstract

The invention relates to an exhalation acquisition device for liver disease patients and a photo-acoustic detection method for ammonia and methyl mercaptan in exhalations, and belongs to the field of exhalation acquisition in order to solve the problems that a mask can be connected to or used by different exhalation acquisition devices, ensures sanitary requirements, and achieves the front-end filtering of exhalation acquisition. The exhalation acquisition device for liver disease patients includes a breathing mask and an exhalation acquisition device, wherein the breathing mask is an ear-hooked mask; the front surface of the mask has an air outlet; two air inlet valves are arranged on both sides of the air outlet; the mask is made of a polyvinyl chloride material; the air outlet is connected to a first air pipeline; the first air pipeline is provided with an one-way valve; the one-way valve is located inside a mask end; the first air pipeline is provided therein with a molecular sieve; the first air pipeline is in communication with the second air pipeline, and a joint is sealed by a spiral fixing hoop; and the second air pipeline is in communication with the exhalation acquisition device, and a joint is sealed by a spiral fixing hoop. The exhalation acquisition device for liver disease patients can be quickly replaced and ensures the sanitary requirements.

Description

technical field [0001] The invention belongs to the field of breath collection, and relates to a device and a method for detecting and diagnosing ammonia and methyl mercaptan in the breath of hepatic encephalopathy of patients with liver disease. Background technique [0002] Hepatic encephalopathy is the manifestation of the end stage of liver disease, and it is the main cause of death in patients with liver disease (about 35%). Hepatic encephalopathy is often caused by severe damage to the liver parenchyma or concurrent liver cirrhosis leading to extensive damage to the liver parenchyma. Upper gastrointestinal bleeding, infection, hypokalemia, surgical blows, improper ascites drainage, and the use of large amounts of diuretics and drugs that damage the liver are common causes of hepatic encephalopathy. The pathogenesis of hepatic encephalopathy is currently mainly based on ammonia poisoning as the main culprit. Under normal circumstances, the production and removal of am...

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