RU191335U1 - MANUAL TUBE WITH A CAP FOR REPEATING BIO MATERIAL MANUAL - Google Patents

Abstract

The utility model relates to laboratory glassware, namely to test tubes, and can be used in chemical, physical, biological, and clinical diagnostic laboratories for collecting, storing, and transporting samples. The technical result of the above task is achieved by creating a test tube with a stopper for repeatedly capping biomaterial manually, consisting of a body and a stopper, and characterized in that the obturator in the stopper is made elongated cone-shaped, with a cone angle of inclination from 0.1 to 45 degrees, with the screw part of the plug converts the resulting vertically directed pushing force into the clamping force of the thread threads of the plug and body.

Description

FIELD OF TECHNOLOGY

The utility model relates to laboratory glassware, namely to test tubes, and can be used in chemical, physical, biological and clinical diagnostic laboratories for the collection, storage and transportation of samples.

BACKGROUND

Currently, in medical institutions for the collection, storage and transportation of samples of biomaterial, such as blood, urine, intestinal contents, etc., various disposable plastic tubes are used in configuration, with stoppers whose design does not provide for the possibility of multiple safe opening / capping the sample.

There are a number of analyzes in which manual selection of biomaterial from a test tube is provided, moreover, several samples are often taken from one test tube for the study of various analytes. For example, when analyzing capillary blood collected in a mini-tube, up to 4 tests are performed: screening with a hematology analyzer, blood smear on glass, erythrocyte sedimentation rate, reticulocyte assay. And for each analysis, you must open the tube manually, then close the tube again. It is also customary in the laboratory to leave the remainder of the sample after analysis for some time in the archive to ensure the possibility of re-analysis in the event of a device failure. For such analyzes, it is necessary to create a disposable tube, which is easily guaranteed to seal several times manually. It is known that the biomaterial sample is biologically hazardous, and the patient’s biomaterial, which is usually liquid, is always taken manually, which creates a high probability of spraying and the risk of infection for the laboratory assistant.

A bottle is known that is sealed with a cap (RU 2401783 dated 03/13/2006, IPC class B65D 51/28), which ensures reliable storage of the soluble substance and solvent and the preparation of the solution without violating the isolation of the contents of the bottle. In this case, the casing is made with a hole in the center located parallel to the axis of the casing, where the tube is installed with longitudinal holes and with the possibility of axial movement. On the casing and on the lid are made annular recesses with a toothed surface for installing a protective toothed tape. The cap contains a cylindrical body for pressing on the neck of the bottle and a cap with screw thread for installation on the body.

The disadvantage is the complex design of the cap, which does not allow the procedure of repeated opening of the closure of the tube.

Known test tube cap 187 (RU 2485033 dated 12/09/2008, IPC class B65D 39/00, A61J 1/14, B65D 51/00) which is used to seal the test tube, but provides pipette access to the liquid contained in the test tube. The cap includes an annular flanged portion for plugging the tube and a sloping section of a truncated cone for simplified piping into the tube. The section of the tubular seal connected to the flange section and the section of the truncated cone is made so that it surrounds the section of the truncated cone and with ease of insertion is tightly engaged with the inner wall of the tube. A section of the central valve connected to the section of the truncated cone is surrounded by a pipette on its upper surface and has a flexible section. A section of the central valve is separated along the perimeter of the gutter, but above the flexible section it hinges on the gutter and does not separate. The ratio of the diameters of the pipette and the section of the central valve is such that during the transfer of the liquid contained in the test tube there are no problems associated with backpressure and vacuum conditions.

The disadvantage is the presence of an opening for the pipette, which prevents the use of a test tube for storing the patient’s biomaterial, since leakage occurs and, as a result, spillage or spillage of the biomaterial, which is potentially dangerous. In addition, the design of the lid does not allow the procedure of repeatedly opening the closure of the tube manually.

The Smart Secure Closure Technology cap design is known for a tube with a twisting mechanism, in which the obturator abuts against the contour of the base of the tube (electronic deposit http://biopharmexpert.ru/product/screw-caps/ or http://axiomabio.com/index.php ? route = product / product & product_id = 308). This cover, due to its technical characteristics, is closest to the claimed technical solution and is taken as a prototype. A cover made by Smart Closure technology prevents biomaterial contamination, withstands organic solutions, and remains soft at extremely low and high temperatures. Due to the lack of an inner cylinder in the lid and a short straight shutter, it is possible to remove the sample from the test tube as completely as possible and reduce the contact area of the biomaterial with the lid surface. In this case, the cavity outside the lid does not come into contact with the sample. Inside the lid is smooth, without cavities and cavities.

The disadvantage is a direct short cover obturator, which does not provide tightness during corking of the biomaterial of a patient in a test tube. Moreover, the use of this cover, at extremely low and high temperatures, places high demands on the material of which the cork is made. The material must have a very small coefficient of thermal expansion to maintain dimensions over a wide temperature range, since the cork and test tube can be made by different manufacturers and even from different materials. In practice, this is a rather complicated engineering task, which is the maintenance of the precision mold, which is required to create a stable quality of articulation of two products with point contact at the place of closure, which affects the tightness and safety of work in the laboratory.

The objective of the technical solution is to create a test tube with a stopper, where the latter has a design that provides multiple capping of the patient’s biomaterial in the test tube by a laboratory assistant, while the stopper must additionally ensure tightness and safety of work during work with the biomaterial.

DISCLOSURE OF THE ESSENCE OF A USEFUL MODEL

The technical result of the above task is achieved by creating a test tube with a stopper for repeatedly sealing biomaterial manually, consisting of a body and a stopper, and characterized in that the body is made with threaded threads, the obturator in the stopper is made elongated conical, with a tilt angle of the cone with a range from 0, 1 to 45 degrees, with the screw part of the tube, a continuous line of contact between the plug sealer and the threaded part of the tube body can be reached anywhere for at least 2/3 of the height of the shutter, while the screwing part of the plug with threaded threads is made on its inner side, converts the resulting vertically directed buoyancy force into the clamping force of the thread of the plug and body. These features provide the ability to repeatedly open / close the tube with a stopper manually, that is, the laboratory technician is able to guaranteedly close the patient’s biomaterial manually, in addition, tightness and safety during storage and transportation under conditions of vibration and temperature changes are additionally ensured.

A technical solution is possible in which graduation is performed on the outside of the casing. This feature provides convenience while filling the test tube with the patient's biomaterial.

According to the technical solution, a corrugated surface is made on the outside of the cork.

A technical solution is possible in which the corrugation of the surface of the outer side of the cork is made with vertical lines.

A technical solution is possible in which the corrugation of the surface of the outer side of the cork is made by horizontal lines. These signs provide convenience at the time of use, eliminating the possibility of slipping the fingers of the laboratory assistant from the cork.

BRIEF DESCRIPTION OF THE DRAWINGS

In FIG. 1 shows a technical solution, namely, a test tube with a stopper for repeatedly capping the patient’s biomaterial, where the latter is made with threaded threads.

In FIG. 2 shows a technical solution, namely, the tube body with the ability to perform calibration on the outside;

In FIG. 3 shows a technical solution, namely, a threaded plug.

Pos. 1 - test tube;

Pos. 2 - cork;

Pos. 3 - tube body;

Pos. 4 - threaded threads made on the upper part of the housing 3 for connection with a stopper 2;

Pos. 5 - skirt for stability of the body 3 tubes 1;

Pos. 6 - relief surface, made on the outer part of the cork 2, mainly vertical lines;

Pos. 7 - obturator;

Pos. 8 - the inner surface of the tube 2;

Pos. 9 - threaded threads made on the inside of the tube 2.

IMPLEMENTATION OF A USEFUL MODEL

An example implementation of a technical solution is shown in FIG. 1-3, where a tube with a stopper is shown for repeatedly capping a patient's biomaterial manually.

The tube assembly (1), which is the tube (1) and the tube (2) connected between the body (3). In the claimed technical solution, the connection is made using the threaded threads (4) of the housing (3) and (9) and the plug (2). Biomaterial can fill the tube (1), for example, 2/3 of the height of the tube. All of these components of the test tube (1) in the assembly are made of material approved for use with biological material.

The connection made using the threaded threads (4) and (9) ensures the positioning of the body (3) and the plug (2) relative to each other by free rotation around a common longitudinal axis (line B). At the same time, one of the parts to be joined, mainly the plug (2), exerts a pressing force directed along the longitudinal axis (line B). Moreover, the interacting threaded threads (4) and (8a) are made in such a way that the specified pressing force is converted into relative rotational or rotational movement between the plug (2) and the housing (3) relative to the common longitudinal axis (line B). In this case, the threaded threads (9) of the plug (2) are engaged along the entire length of the screwing path until the casing (3) is sealed with a seal (7). The tube (2) has a conical obturator (7), where the tilt angle of the cone is in the range from 0.1 to 45 degrees, which allows the tube (1) to be sealed at an arbitrary point of contact of the obturator (7) with the inner surface of the neck of the tube body (3) (1), and does not require high accuracy in the manufacture of cork (2) tubes (1).

The conical shutter (7) of the plug (3), when tightening the thread, enters the case (3) of the tube (1) from the inside until the casing (3) is sealed with a shutter (7). When screwing the plug (2) with force, as a rule, a reaction force arises, which pushes the obturator (7) out of the sealed case (3) of the tube (1). Using the threaded threads (4) and (9), the reaction force is converted into the clamping force of the threaded threads (9) of the plug (2) to the corresponding thread of the thread (4) of the body (3), which prevents the spontaneous unwinding of the thread and the violation of the tightness of the tube (one).

An additional advantage of the proposed technical solution is the height of the obturator (7) of the plug (2), where the angle of inclination of the cone is selected so that a continuous line of contact of the obturator (7) of the plug (2) with the inside of the housing (3) can be reached anywhere for at least 2/3 of the height of the shutter (7). Moreover, even the minimum width of the continuous contact line of the tube (2) and the housing (3) ensures the tightness of the tube (1). On the inner side of the tube (2) of the tube (1) between the obturator (7) and the threaded part (9) there is a cavity (8) for accommodating the wall of the housing (3) in the process of connection with the tube (2).

The use of tubes (1) is illustrated by an example:

The laboratory assistant takes the tube (1) with the patient’s biomaterial into the hands, manually, that is, with minimal effort, opens the tube (2) of the case (3). Makes the necessary tests, repeatedly capping the patient’s biomaterial, without attracting additional effort. At the same time, the test tube (1) due to the stability skirt (5) stands confidently on any horizontal surface. The laboratory assistant has the ability to repeatedly open and close the stopper (2) due to the corrugation (6), performed on the outer part of the stopper (2), and not allowing the fingers of the laboratory assistant to slide, while the corrugation can be performed both by horizontal lines and vertical. The obturator (7) itself is elongated conical, which ensures the tightness of the tube (1) by contacting the obturator (7) with the inner surface of the tube (1) at an arbitrary point of contact.

Nothing in the above description should be construed as limiting the technical solution to any specific materials, geometry or orientation of the elements. Many replacements of parts / orientations are contemplated within the scope of the invention and will be apparent to those skilled in the art. The embodiments described herein were presented by way of example only and should not be used to limit the scope of the technical solution.

Despite the fact that in this application a technical solution was described on the basis of specific embodiments, a specialist in the art in the light of the ideas set forth in this document can develop additional options for implementation and modification without departing from the essence, or exceeding the scope, technical solution described in the formula. Accordingly, it should be understood that the drawings and descriptions in this document are offered only to facilitate understanding and should not be construed as limiting its scope.

Thus, the proposed technical solution allows you to create a test tube with a stopper for repeatedly capping the patient’s biomaterial manually, which is used in medical practice, for example, for collecting human capillary blood in clinical diagnostic laboratories equipped with automatic and semi-automatic blood analyzers, storing and transporting samples of biological fluids from the collection site to specialized laboratories.

Claims (5)

1. A test tube with a stopper for repeatedly capping biomaterial manually, consisting of a body and a stopper, characterized in that the body is made with threaded threads, the obturator in the tube is elongated cone-shaped, with a cone inclination angle in the range from 0.1 to 45 degrees, a continuous line contact between the stopper of the stopper and the threaded portion of the tube body can be achieved anywhere for at least 2/3 of the height of the stopper, while the screw-down part of the stopper with threaded threads is made on its inner side, p converts the resulting vertically directed buoyancy force into the clamping force of the threads of the plug and housing threads. 2. The test tube according to claim 1, characterized in that graduation is performed on the outside of the casing. 3. The test tube according to claim 1, characterized in that the corrugation is performed on the outside of the tube. 4. The test tube according to claim 6, characterized in that the corrugation is made in vertical lines. 5. The test tube according to claim 6, characterized in that the corrugation is made by horizontal lines.

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