Postnaris sampler

Abstract

The invention discloses a postnaris sampler, which comprises a cannula capable of being inserted into a nasal cavity. A flexible blind tube is arranged at the front tube end of the cannula; the back tube end of the cannula is open; the head part of the flexible blind tube is divided into a plurality of tube sections capable of opening and closing along the circumferential direction; a specimen brush which can be inserted into or pulled out of the cannula is arranged in the cannula; the specimen brush comprises a brush holder and a sampling brush hair installed at the front end of the brush holder; the postnaris sampling operation can be carried out by the sampling brush hair which extends out of the cannula when the specimen brush extending into the cannula is pushed forwards; and the sampling brush hair with a sampled specimen is withdrawn into the cannula from the flexible blind tube when the specimen brush is pulled backwards. The invention has the following advantages: (1) the sampling operation is convenient, time-saving and labor-saving, and the damage to nasal tissues is small; (2) the sampling brush hair can be withdrawn back to the cannula after specimen sampling, therebyeffectively preventing the sampled specimen on the sampling brush hair from being polluted by secretions in the nasal cavity when passing through a nasal passage through the protection of the cannulaand ensuring the effect of the sampled specimen.

Description

technical field [0001] The invention relates to the technical field of medical sampling instruments, in particular to a posterior nasal cavity sampler. Background technique [0002] At present, due to poor ambient air quality, many bacteria, viruses, microorganisms and even toxic particles will enter the body through the respiratory tract as inhalants, leading to respiratory tract infections in the human body. Because there are viscous nasal secretions in the posterior nasal cavity of these human beings, some of these inhaled substances are usually adhered by these posterior nasal secretions. Rapid and efficient detection of diseases. [0003] At present, the sampling method of suction tube and suction device is generally used to sample the nasal secretion of the human body. The above-mentioned sampling methods have the following disadvantages: (1) When the suction tube negatively sucks the nasal secretions, it is very easy to cause damage to the nasal mucosa and bleeding,...

AI Technical Summary

Problems solved by technology

The above-mentioned sampling method has the following disadvantages: (1) When the suction tube negatively sucks the nasal secretions, it is very easy to cause damage to the posterior nasal mucosa and bleeding, which not only easily causes contamination of the sampled specimens, but also leads to poor sampling results and even sampling failures, and leads to Sampling is painful for patients; (2) Sampling is time-consuming, laborious and difficult; (3) Sampling samples on the suction tube are easily polluted by nasal secretions when they pass through the nasal passages, resulting in poor sampling results and even sampling failures

Images