RU76563U1 - Probe for Chlamydia Sampling from the Mucous Nasal and Pharyngeal Cavities - Google Patents

Abstract

The utility model relates to medicine, namely to otorhinolaryngology, and can be used to diagnose chlamydia of the upper respiratory tract. The proposed reusable probe has two working elements connected by a handle. The working element intended for sampling from the nasal mucosa is made in the form of a narrow flat platform of a rhombic shape with a blunt end. The working element for sampling from the mucosa of the posterior pharyngeal wall is made in the form of a flat rounded platform. The use of a bilateral probe, the working elements of which correspond in shape to the anatomical features of the ENT organs, can reduce the amount of mucus in the scraping, which helps to improve the quality of diagnosis of chlamydial infection.

Description

The utility model relates to medicine, namely to otorhinolaryngology, and can be used to diagnose chlamydia of the upper respiratory tract.

In the diagnosis of chlamydial infectious process, laboratory methods that make it possible to establish an etiological diagnosis are of paramount importance.

At present, there is no laboratory method to avoid both false positive and false negative results. When diagnosing chlamydia, a comprehensive laboratory diagnosis is recommended (PIF, ELISA, microbiological method, PCR), which allows to identify the pathogen, determine the stage of the disease, justify the need for the appointment of antibacterial drugs [1].

The material for the detection of chlamydial agent by direct immunofluorescence (PIF) method is smear swabs from the mucous membranes without any impurity of mucus and blood. The presence of a large amount of mucus and an impurity of blood in the test material can lead to both false positive and false negative results [2]. For the diagnosis of respiratory chlamydia, swabs are taken from the nasal mucosa and the posterior pharyngeal wall.

Known for special sterile disposable brush probes used for sampling for chlamydia [3]. The material is sampled by the working element of the probe, made in the form of a brush. The known probe has significant disadvantages: the presence of one working surface does not allow simultaneous sampling of scrapings from

nasal cavity and pharynx; with the help of a brush, a lot of mucus is selected, which prevents the mutual fund; it is difficult to take the scraping from the posterior pharyngeal wall due to the narrow working surface of the probe.

Known bilateral gynecological spoon Volkman (prototype), used to collect material for chlamydia (scraping from the cervical canal of the cervix) [3]. The ends of the Volkman spoons have a rounded shape of different diameters (2 mm and 4 mm), which provides it with the greatest correspondence when performing the necessary manipulations. Volkman's spoon is widely used in gynecology for sampling for chlamydia, but unsuitable for use in otorhinolaryngology: the presence of indentations, narrow working parts of the instrument, and also insufficient length of the spoon make it difficult to take material from the mucosa of the posterior pharyngeal wall; applying the test material to a glass slide is also difficult.

The objective of the utility model is the development of a two-sided instrument that allows sampling material for chlamydia from the mucous membrane of the nose and posterior pharyngeal wall.

The problem is solved by the proposed probe having two working elements connected by a handle. The working element intended for sampling from the nasal mucosa is made in the form of a narrow flat platform of a rhombic shape with a blunt end. The working element for sampling from the mucosa of the posterior pharyngeal wall is made in the form of a flat rounded platform.

The probe is made of solid material (medical steel or polymer).

Figure 1 shows a two-way probe for sampling for chlamydia, including a working element 1 for taking a scraping from the nasal cavity, a handle 2 and a working element 3 for taking a scraping from the pharynx.

The proposed probe is used as follows. A patient with a suspected respiratory chlamydia after the evacuation of discharge from the nasal cavity is administered a probe. Tip 1 produce scraping from the mucosa in the middle nasal passage. The collected scraping material is applied to a glass slide, fixing it with 96% ethanol. Then the probe tip 3 is inserted beyond the soft palate into the patient's nasopharynx and is carried out along the posterior pharyngeal wall. The scraping material is also applied to a glass slide, fixing it with 96% ethanol. A study of scraping material for chlamydia using the PIF method is carried out.

The proposed two-way reusable probe has the following advantages:

working elements of the probe are made in accordance with the anatomical features of the ENT organs;

reduced amount of mucus in the scraping, which helps to improve the quality of diagnosis of chlamydial infection.

The effectiveness of the proposed probe is clinically confirmed. 197 people who were hospitalized in the 2nd surgical department of the clinic at the Research Institute of Medical Problems of the North of the Siberian Branch of the Russian Academy of Medical Sciences in Krasnoyarsk were examined, of which 71 patients received a positive result for chlamydial infection, which was confirmed by PCR.

Information sources.

1. Kudryavtseva L.V., Misyurina O.Yu. et al. Clinic, diagnosis and treatment of chlamydial infection (a manual for doctors). - M., 2001.

2. Lobzin Yu.V., Lyashchenko Yu.I., Poznyak A.L. Chlamydial infections. St. Petersburg. 2003.S. 233-249. (400 p.).

3. Pukhner A.F., Kozlova V.I. "Chlamydial urogenital and extragenital diseases.", Moscow, Triada-X, 2004. p. 82. (128 p.)

Claims (1)

A probe for sampling for chlamydia from the nasal mucosa and pharynx, containing two working elements connected by a handle, characterized in that the working element intended for sampling from the nasal mucosa is made in the form of a narrow flat platform of a rhombic shape with a blunt end, and the working element for sampling from the pharyngeal mucosa is made in the form of a flat rounded platform.