RU212292U1 - Scattering filter - Google Patents

Abstract

The utility model relates to laboratory equipment and can be used in veterinary medicine for filtering fecal suspension during scatological diagnostics of helminthiases. The scatological filter includes a round hoop, on which a synthetic mesh is stretched, while the synthetic mesh is stretched in two layers with a mesh diameter not exceeding 0.9 mm and has the shape of a cone. The proposed useful tool allows you to increase the convenience of laboratory diagnosis of helminthiases without the need to spend money on consumables (filter gauze), time - to cut gauze flaps of the required size and put each flap into the funnel cone. A cone made of synthetic fabric is clearly inserted into the funnel, being held on it by a hoop. A double layer of synthetic fabric gives the same level of filtration as the double layer of gauze featured in descriptions of scatological techniques. At the same time, the meshes of the synthetic cone matter have a fixed size (unlike gauze), not exceeding 0.9 mm, which guarantees a stable filtration quality. When using the proposed filter, there is no risk of injuring your hand on protruding metal elements, as when using strainers (which can be critical, since the feces under study contain a large number of bacteria that can cause inflammation). Synthetic mesh in the form of a cone does not rust (like metal strainers). The scatter filter is a reusable device, which is easy to clean. 3 ill.

Description

The utility model relates to laboratory equipment and can be used in veterinary medicine for filtering fecal suspension during scatological diagnostics of helminthiases.

There are known methods of scatological diagnosis of helminthiasis based on the sedimentation of the desired helminth eggs (for example, the method of successive washings) or on their flotation (for example, the Darling method), due to the difference in the specific gravity of the eggs and the liquid used (GOST R 54627-2011 "Animals agricultural ruminants Methods of laboratory diagnosis of helminthiases "; Parasitology and parasitic animal diseases / Akbaev, M.Sh., Vodyanov, A.A., Kosminkov, N.E. [and others]. - M .: Kolos, 1998. - 743 Teterin, V. I. Diagnosis of helminthiases in animals: a textbook / V. I. Teterin, I. A. Kravchenko, St. Petersburg: Lan, 2020. - 160 p.: ill.). In various versions of the description of these diagnostic procedures, there is invariably a stage when a suspension of feces (mixed with water) must be filtered. For this, it is proposed to use metal strainers or pieces of two-layer gauze.

The disadvantages of the known methods are

1) in relation to metal strainers - (1) the inconvenience of cleaning them after each use, due to the rigidity of the structure; (2) the inevitable appearance of rust from frequent contact with water, which impairs their throughput and therefore makes filtration difficult; (3) the risk of scratching the hand on the sharp edges of the strainer (when they are no longer held by the shell during prolonged use, or if the strainer was not originally equipped with it), which is fraught with infection of the wound, since the fecal suspension contains many bacteria;

2) in relation to gauze - (1) high consumption of gauze (since it is not possible to reuse it); (2) labor costs for cutting the required size flaps during mass studies (since each fecal sample requires its own piece of gauze), and also (3) poor quality gauze available on the market (with unequal and too large gaps between the warp and weft threads of the weave ), which reduces the filtration efficiency; (4) the inconvenience of laying a piece of gauze in the funnel cone due to the fact that initially the gauze lies horizontally (that is, when pouring a suspension, this suspension begins to flow down the sides, bypassing the funnel cone), so the gauze must either be additionally folded in the form of a cone, or crush with a finger in a (constantly wet) glove, to which it sticks (and therefore bends back), or pre-wet with water, that is, perform additional actions that increase the time of the diagnostic procedure.

The closest devices are the entomological landing net (for catching butterflies) and the landing net (for playing fish to prevent the line from breaking or the fish leaving the bait): both contain a hoop (20 cm in diameter and wider) connected to a handle (often telescopic, up to 10 m ), and a bag (up to 90 cm deep). These nets are chosen as a prototype.

The technical result lies in the fact that the proposed utility model allows you to quickly, safely and economically filter the suspension of feces during laboratory diagnosis of helminthiases.

The technical result is achieved by the fact that the utility model consists of a round hoop, on which a synthetic mesh is stretched, while the synthetic mesh is stretched in two layers with a mesh diameter not exceeding 0.9 mm, and has the shape of a cone (which is obtained due to the pattern and properties synthetic fabric).

The essence of the utility model is illustrated by pictures, where

in fig. 1 shows a top view of the invention;

in fig. 2 is a right side view of the present invention,

in fig. 3 - use of the filter in laboratory practice.

The scatological filter contains a round hoop 1, on which a synthetic mesh is stretched, while the synthetic mesh is stretched in two layers with a mesh diameter not exceeding 0.9 mm, and has the shape of a cone 2.

The coprological filter is used as follows

To filter the suspension of feces during laboratory diagnosis of helminthiases, the scatological filter is taken by the hoop 1 and placed in the cone of the funnel inserted into the test tube so that the synthetic mesh in the form of a cone 2 is directly inside the funnel cone, and the round hoop 1 lies on the top of the funnel ( Fig. 3). A container with a suspension of feces is brought with a hole to the center of the round hoop 1, and the suspension is carefully poured out. Thus, the liquid fraction (required for further research) is in the test tube, and the large particles of the suspension remain in the synthetic mesh 2. water. After that, the filter is ready to work again.

The usefulness of the proposed utility model lies in the fact that it makes it possible to increase the convenience of laboratory diagnosis of helminthiases without the need to spend money on consumables (filter gauze), time - to cut gauze flaps of the required size and put each flap into a funnel cone. A cone made of synthetic fabric is clearly inserted into the funnel, being held on it by a hoop. A double layer of synthetic fabric gives the same level of filtration as the double layer of gauze featured in descriptions of scatological techniques. At the same time, the meshes of the synthetic cone matter have a fixed size (unlike gauze), not exceeding 0.9 mm, which guarantees a stable filtration quality. When using the proposed filter, there is no risk of injuring your hand on protruding metal elements, as when using strainers (which can be critical, since the feces under study contain a large number of bacteria that can cause inflammation). Synthetic mesh in the form of a cone does not rust (like metal strainers).

The scatter filter is a reusable device that is easy to clean

Claims (1)

Scattering filter, including a round hoop, on which a synthetic mesh is stretched, characterized in that the synthetic mesh is stretched in two layers with a mesh diameter not exceeding 0.9 mm, and has the shape of a cone.

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