RU191794U1 - TURNING COVER-SUMMER HOLDER WITH FAST CLIPPING FUNCTION - Google Patents

Abstract

The utility model relates to laboratory glassware, namely, to test tubes for taking patient biomaterial, and is mainly used in clinical diagnostic laboratories for collecting samples. The technical result of the above task is achieved by creating a swirling cap-holder of the sample probe with a quick donning function, the design of which made of two coaxial hollow cylinders of different diameters, one of which corresponds to the inner diameter of the tube, and the second corresponds to the outer diameter tubes of the tube, while in the center of the cap-holder there is a polygonal hole with an additional recess in one of the corners, where the diameter of the inscribed circle is equal to the diameter of the probe, while on the cylinder surface corresponding to the outer diameter of the tube body, there are discontinuous threads that allow guaranteed closing the tube by pressing on the cap, and screwing the cap.

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. It is also known that analyzes are taken with a device called a sampler or sampler. And the installation of the latter in a test tube using the cap - holder should be carried out in a short time.

A test tube with a probe and a cap is known (RU161715 dated 07/14/2015), where the claimed holder cap is a monolithic design of two coaxially arranged hollow cylinders of different diameters, one of which corresponds to the inner diameter of the tube (di) and is tightly held inside the tube by dry friction, and the second one (cb) corresponds to the outer diameter of the tube and has protrusions located opposite each other for taking by hands, which can vary both in quantity and in shape. In the center of the lower part of the holder-cap there is a polygonal hole, where the diameter of the inscribed circle is equal to the diameter of the sampling tube. In this case, the connection of the holder cap and the tube body is carried out using friction.

The disadvantage is the connection of the tube body and the holder cap using dry friction, which, in the absence of a mechanical lock, does not guarantee reliable connections under vibration conditions when transporting the tube in a ready-to-use form, i.e. assembled with a sample probe.

A known tube for taking capillary blood (RU166182 from 03.03.2016), where the claimed cap is a sample holder, the design of which is made of two coaxially arranged hollow cylinders of different diameters, one of which corresponds to the inner diameter of the tube, and the second corresponds to the outer diameter of the tube, In the center of the holder-cap there is a polygonal hole, where the diameter of the inscribed circle is equal to the diameter of the sampling tube. The connection of the test tube and the cap is carried out using clamps made in the form of triangles. The specified cover-holder-sampler taken for the first prototype due to its closest technical characteristics.

The disadvantage is the connection of the tube body and the cap holder with the sampler on dry friction, since it is not possible to screw the cap holder together with the sample probe onto the tube body, which does not guarantee a reliable connection.

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 lid made using 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 extract 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 the lack of a hole for the sample inlet, which does not allow the procedure for removing biomaterial from the patient with the possibility of further transportation of the cover-holder of the sample inlet together with the sample inlet. In addition, there is no possibility of putting on the cap on the tube. The specified cover is taken for the second prototype due to its closest technical characteristics.

The objective of the technical solution is to create a swirling cap-holder of the sampling inlet with a quick donning function, which ensures equally reliable closure of the test tube both by pressure and screwing in a short time, which makes it possible to reduce the cost of assembly of the product at the manufacturer by reducing the cost of putting the cap on the test tube (putting on pressure caps are technically simpler, and therefore cheaper and faster), as well as maintaining a convenient and reliable donning of the cover assembly for the user hand screwdriver.

DISCLOSURE OF THE ESSENCE OF A USEFUL MODEL

The technical result of the above task is achieved by creating a swirling cap-holder of the sample probe with a quick donning function, the design of which is made of two coaxially arranged hollow cylinders of different diameters, one of which corresponds to the inner diameter of the tube, and the center diameter of the tube the holder has a polygonal hole with an additional recess in one of the corners to balance the flow of air displaced from test tubes supplied with liquid through the sample inlet and characterized in that discontinuous thread lines are arranged on the cylinder surface corresponding to the outer diameter of the tube body.

These features make it possible, due to the discontinuity of the thread lines made on the inner surface of the holder-cap, to put the cap-holder onto the tube during industrial assembly of the product by simple pressure, which simplifies the assembly equipment and accelerates the assembly process of the product, and at the same time the user (laboratory assistant ) can repeatedly use intermittent threads, as well as regular solid threads, for screwing the cap-holder onto the tube body.

According to the technical solution, broken lines of thread are made in an amount of at least two units. This feature provides a reliable connection of the cap-holder and the tube body.

According to the technical solution, the broken lines of the thread are made equal to half the height of the cylinder, corresponding to the outer diameter of the tube body. This feature provides a reliable connection of the cap-holder and the tube body.

According to the technical solution, the hole in the cap-holder is made parallel to the walls of the tube. The indicated feature provides a stable vertical position of the inlet inside the tube.

According to the technical solution, the length of the dashed thread line is made in such a way that it provides stable engagement with the return thread lines along the tube body. The indicated feature ensures a steady state of the sample intake inside the tube.

According to the technical solution, a corrugated surface is made on the outside of the holder-cover by vertical or horizontal lines.

These signs provide convenience at the time of use, eliminating the possibility of slipping the fingers of the laboratory assistant from the cover-holder.

BRIEF DESCRIPTION OF THE DRAWINGS

In FIG. 1 shows a technical solution, namely, a test tube assembly together with a cap holder.

In FIG. 2-3 shows a technical solution, namely, the cover-holder with a hole for the inlet.

Pos. 1 - test tube;

Pos. 2 - holder cover;

Pos. 3 - tube body;

Pos. 4 - hole in the lid-holder 2;

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

Pos. 6 - relief surface, made on the outer part of the lid-holder 2, mainly vertical threads;

Pos. 7 - obturator - cylinder, corresponding to the inner diameter of the casing 3 tubes 1;

Pos. 8 is a cylinder corresponding to the outer diameter of the body 3 of the tube 1;

Pos. 9 - threaded threads located on the cylinder 8 of the cover-holder 2, intermittent.

IMPLEMENTATION OF A USEFUL MODEL

An example implementation of a technical solution is shown in FIG. 1-3, which shows a screw cap-holder (2) of the inlet with the function of quick donning.

The tube assembly (1), which is the connection between the tube body (3) of the tube (1) and the cap-holder (2). In the claimed technical solution, the connection is made using the threaded threads of the housing (3) and intermittent threaded threads (9) of the holder-cap (2). All of these components of the test tube (1) in the assembly are made of material approved for use with biological material.

The threaded threads (9), the holder-cap (2) are intermittent, which allows the industrial assembly of the product to be put on the holder-cap (2) on the tube (1) by simple pressure, this action simplifies the assembly equipment and speeds up the assembly process of the product, and at the same time, the user (laboratory assistant) can repeatedly use the discontinuous thread (9) as well as the usual solid thread to screw the holder cover (2). The number of threaded threads (9) is at least 2, while the number can be increased to 8 to strengthen the reliability of the connection of the cap - holder (2) with the tube body (3). Such manufacture of threaded threads (9) makes it possible to place holes (4) for the sample inlet in the holder-holder (2), which ensures that the holder-holder (2) is twisted manually. The height of the threaded threads (9), made intermittent, does not exceed half the height of the cylinder, corresponding to the outer diameter of the tube body.

The connection made by intermittent threaded threads (9) provides positioning of the housing (3) and the holder-cover (2) relative to each other by free rotation around a common longitudinal axis (line B). In this case, one of the connected parts, mainly on the cover-holder (2), is a pressing force directed along the longitudinal axis (line B). Moreover, the interacting threaded threads (9) are made in such a way that the specified pressing force is converted into relative rotational or rotational movement between the holder cap (2) and the body (3) relative to the common longitudinal axis (line B). In this case, the threaded threads (9) of the holder-cover (2) are engaged along the entire length of the screwing path until the casing (3) is sealed with a shutter (7).

With the help of threaded threads (9), the reaction force is converted into the clamping force of the threaded threads (9) of the holder cover (2) to the corresponding threads of the housing thread (3), which prevents spontaneous unwinding of the thread and the violation of the reliability of the connection of the holder holder (2) ) and tubes (1).

On the inner side of the cap-holder (2) of the tube (1) between the obturator (7) and the threaded threads (9), there is a cylinder (8) for placing the housing wall (3) in the process of connection with the cap-holder (2). The hole (4) is made parallel to the walls of the cap-holder (2) of the tube (1) with the possibility of installing a sample probe for taking patient biomaterials. This hole (4) allows you to accurately position the sample in the cover-holder (2) in a short time even with a skew during installation. In the hole (4) there is an additional recess in one of the corners to balance the flow of air displaced from the test tube entering through the sample inlet with liquid. At the same time, discontinuous threaded threads (9) are made on the inner side of the holder-cap (2), which provides simple pressure. This action simplifies the assembly equipment and speeds up the assembly process of the product, and at the same time, the user (laboratory assistant) can repeatedly use intermittent threaded threads (9) as well as the usual solid thread for screwing the holder-cap (2).

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

Wipe a finger with a cotton swab moistened with a disinfectant solution at the puncture site. Pierce your finger with a scarifier. Remove the first drop of blood with a dry swab.

Bring the sample inlet to the protruding drop of blood, holding the tube (1) with the cap-holder (2) with the sample inlet at an angle to the point of finger puncture from top to bottom. Fill the sample probe with freely protruding blood from the finger completely, pushing the finger as needed to form a drop of blood. Then turn the tube into a vertical position with the sample inlet upward and allow the blood to drain into the tube (1). Due to the additional recess in one of the corners of the opening of the holder-cap (2), the air flow displaced from the test tube (1) by the liquid entering through the sample inlet is balanced with atmospheric pressure, which allows the liquid to flow freely into the test tube (1), which is important, for example, in the analysis of human capillary blood, since the rapid movement of fluid prevents platelet aggregation and, as a result, increases the accuracy of the analysis.

Remove the sample inlet from the tube (1). Seal the container with a lid, gently turn several times to mix the blood sample and excipient and incubate at room temperature. It is allowed to use automatic shakers, mixers, and other devices for automatic mixing and homogenization of the sample, as well as centrifugation in sealed tubes, since the design of the cap for sealing ensures tightness of the sample closure and prevents the sample from spreading over the edge of the tube even when the tube is repeatedly opened and closed (1) . In the process of analysis, the laboratory assistant can put the tube (1) in a special tripod, and on a horizontal surface both in open and in closed form on either side.

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.

The use of a swirling cap-holder of the sampling inlet with the function of quick donning allows you to work on standard equipment, expand functionality due to the reliability of closing the biomaterial sample, and also provide a higher level of safety for personnel during the collection, storage and transportation of biomaterial samples.

Claims (8)

1. A screw-on sample holder cap with a quick donning function, the design of which is made of two coaxially arranged hollow cylinders of different diameters, one of which corresponds to the inner diameter of the tube, and the second corresponds to the outer diameter of the tube, with a polygonal hole in the center of the cap with an additional recess in one of the corners, where the diameter of the inscribed circle is equal to the diameter of the probe, and characterized in that on the surface of the cylinder, corresponds to to the outer diameter of the tube body, discontinuous thread lines are located. 2. The cover-holder according to claim 1, characterized in that the interrupted thread lines are made in an amount of at least two units. 3. The cap-holder according to claim 1, characterized in that the broken lines of the thread are made equal to half the cylinder corresponding to the outer diameter of the tube body. 4. The holder cap according to claim 1, characterized in that the hole in the holder cap is made parallel to the walls of the tube. 5. The holder cap according to claim 1, characterized in that the length of the dashed thread line is designed in such a way that it provides stable engagement with the response thread lines along the tube body. 6. The cover-holder according to claim 1, characterized in that on the outer side of the cover-holder there is a corrugated surface. 7. The cover-holder according to claim 6, characterized in that the lines of the corrugated surface are made vertical. 8. The cover-holder according to claim 6, characterized in that the lines of the corrugated surface are made horizontal.

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