Airflow blocking-type nasal resistance detection device and method thereof

Abstract

The invention discloses an airflow blocking-type nasal resistance detection device and a method thereof, which relates to the technical field of medical equipment. A mask is connected with a breatherpipe, the breather pipe is connected with the input end of a throttling device, and the breather pipe extends outwards from the output end of the throttling device; the two ends of a first differential pressure sensor are connected with the throttling device; one end of a differential pressure transducer II is connected with one end of the differential pressure transducer I, and the other end of the differential pressure transducer II is arranged in the atmosphere; an electromagnetic valve is arranged on the breather pipe at the output end of the throttling device; and a data processing deviceis respectively connected with a flow detection device and a pressure detection device. The lung pressure is obtained from the outside of the nose by intermittently blocking the breather pipe in thebreathing process, a nasal resistance value is calculated by combining directly measured front nasal cavity pressure and respiratory flow, the nasal resistance detection device is simple in structureand convenient to use, does not need to put a measuring probe into the oral cavity and the nasal cavity, is suitable for people of all ages to use, provides convenience for nasal cavity detection of children, consumes few materials and is easy to disinfect.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to an airflow blocking nasal resistance detection device and method. Background technique [0002] The respiratory system is a very important organ in the human body, and the diseases of the respiratory system account for about 1 / 3 of the diseases of the whole body. The nose is one of the very important organs of the respiratory system. The diagnosis of nasal diseases has attracted more and more attention. In normal people, nasal airway resistance (nasal airway resistance, NAR) accounts for about 50-53% of the total airway resistance under normal conditions, and NAR plays an important role in maintaining the function of the nasal cavity and the entire airway. In recent years, NAR research has been highly valued by many scholars. NAR is an important part of the physiological parameters of nasal breathing, and it plays an important role in maintaining alveolar pressure, nega...

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Problems solved by technology

[0006] The purpose of the present invention is to provide an airflow blocking nasal resistance detection device and method to solve the problems of complex detection, potential safety hazards, inaccurate measurement data, and difficulty in detecting children's nasal cavity ventilation in the above-mentioned background technology

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