CN218167075U - Can be used to micropipette save pipe of trace - Google Patents

Abstract

The utility model relates to a preservation tube for micro-pipetting, which comprises a soft tube body with a closed bottom and an open top and a cap for fixing and sealing the opening of the soft tube body in an opening and closing way; the cap on be provided with the tubule of outside extension, when this cap is fixed and seal the opening of soft body, this tubule with soft body inside switch-on, preserve in liquid in the soft body passes through the tubule flows the preservation outside of the tubes. The technical scheme of this application has increased the flow length of liquid in the body through the setting of tubule to the speed of the selection control liquid outflow through the tubule diameter has realized that controllable trace is moved liquid. In addition, the structure of this application save pipe is succinct, makes portably, and is with low costs, is suitable for extensive popularization and application.

Description

Can be used to micropipette save pipe of trace

Technical Field

The application relates to the technical field of preservation tubes, in particular to a preservation tube capable of being used for micro liquid transfer.

Background

In the biomedical field, a sample holding tube is a device commonly used for collecting, holding, and processing samples (including respiratory tract samples, digestive tract samples, blood, body fluid samples, etc.).

The sample preservation pipe of prior art includes (1) and comprises tube cap and body, when needs examine the sample, take out the sample preservation pipe, open the tube cap, take out a certain amount of samples from the sample preservation intraductal and carry out follow-up dropwise add and detect, such operation appears because of the sample that the human contact leads to pours in the sample detection process very easily, the problem of pollution, especially respiratory track sample is collecting, the save, there is the problem that the human contact sample has the propagation risk in the in-process of detection, the safety problem of detection has been increased. Or (2) set up the opening at the top of tube cap, later through the extrusion preservation pipe body, extrude the preservation pipe with intraductal liquid through this opening, although this technical scheme has solved to a certain extent and has spilt, the risk of pollution, this technical scheme is limited by open-ended structure and extruded operation and can't realize the extraction of trace liquid.

Therefore, there is a need for a storage tube that overcomes the risk of spillage and contamination and can be used for micropipetting.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a purpose has overcome the shortcoming among the above-mentioned prior art, provides one kind and overcomes the risk of spilling, pollution promptly and can be used for the trace to move the liquid again to easily control the save tube that moves the liquid measure.

In order to achieve the above object, the present invention has the following constitutions:

the application relates to a preservation tube for micro-pipetting, which comprises a flexible tube body with a closed bottom and an open top and a cap for fixing and closing the opening of the flexible tube body;

the cap on be provided with the tubule of outside extension, when this cap is fixed and seal the opening of soft body, this tubule with soft body inside switch-on, preserve in liquid in the soft body passes through the tubule flows the preservation outside of the tubes.

In a preferred storage tube for micropipette, the tube body and the cap are connected into a whole by a bendable connecting piece.

In a preferred storage tube for micropipette, a filtration membrane is provided at a position facing the inside of the tube body on the cap.

In a preferred storage tube for micropipettes, the cap comprises a cylindrical insertion member inserted into the interior of the tube body and a hollow mounting seat for mounting the tubule.

In a preferred storage tube usable for micropipette transfer, a filtration membrane is provided in the cylindrical insertion member, and the liquid inside the tube body passes through the filtration membrane and flows out of the storage tube through the mounting seat and the narrow tube in this order.

In a preferred storage tube for micropipetting, the thin tube is a flexible thin tube.

In a preferred storage tube for micropipette use, the internal diameter of the narrow tube is in the range of 0.3mm to 1mm.

In a preferred storage tube for micropipette use, the length of the tubule ranges from 20 to 50mm.

The preservation tube used for micro liquid transfer comprises a soft tube body with a closed bottom and an open top and a cap used for closing the opening of the soft tube body; the block top be provided with the tubule to the outside extension of save pipe, this tubule with the inside switch-on of body, save in liquid in the body passes through the tubule flows the save pipe is outside. The technical scheme of this application has increased the flow length of liquid in the body through the setting of tubule to the speed of liquid outflow is controlled through the selection of tubule diameter, has realized the controllable trace and has pipetted.

Adopted the utility model discloses a can be used to micropipette's save tube, the block including inserting the inside cylindrical insertion part of body and being used for the installation the cavity mount pad of tubule. And a filtering membrane is arranged in the cylindrical insertion part, and liquid in the pipe body passes through the filtering membrane and sequentially passes through the mounting seat and the thin pipe to flow out of the storage pipe. Solid phase and mucus are filtered through the filtering membrane, and the sample is transferred conveniently.

Drawings

Fig. 1 is a schematic perspective view of a preferred storage tube of the present invention in a first state;

FIG. 2 is a schematic view of the first state of the preferred storage tube of the present invention;

fig. 3 is a schematic cross-sectional structural view of a preferred cap of the present invention;

FIG. 4 is a schematic view of the preferred storage tube of the present invention in a second state;

description of the symbols: the device comprises a pipe body 1, a cover cap 2, a thin pipe 3, a connecting piece 4 and a filtering membrane 5.

Detailed Description

The technical solutions in the embodiments of the present disclosure will be described below clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present disclosure, rather than all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure without any creative effort also belong to the protection scope of the present invention.

As shown in fig. 1 and 2, the present application is a preservation tube for micropipette, which comprises a flexible tube body 1 with a closed bottom and an open top, and a cap 2; the cap 2 is mounted on the tube body 1 and closes the top opening of the tube body 1. This application is through being provided with the tubule 3 towards the outside extension of save tube in 2 tops of block, and is fixed and seal as this block 2 during the opening of soft body 1, this tubule 3 with 1 inside switch-on of body, save in liquid in the body 1 passes through tubule 3 flows out save tube is outside.

The narrow tube 3 is attached to the top end of the cap 2 and can be extended to any direction outside the storage tube, and the extending direction and length are determined according to actual use conditions. The cap 2 is provided with a through hole at the position where the thin tube 3 is installed, the through hole is communicated with the thin tube 3 and the tube body 1, and liquid in the tube body 1 can enter the thin tube 3 through the through hole.

In a preferred embodiment, the thin tube 3 is a flexible thin tube 3, and the flexible thin tube 3 can be bent or adjusted by a user to point in any direction.

The technical scheme of this application need not to open the block when moving the liquid, and the liquid in the body is kept in the body from gathering, handling until moving the liquid always promptly, can not take place the sample under safe operational environment and spill, the problem of pollution.

The technical scheme of this application passes through the setting of thin hose (flexible tubule), can slow down the liquid-transfering speed of liquid in the body, more is applicable to moving liquid of trace liquid. The concrete advantages are that:

(1) The diameter of tubule is less, through the tubule of installation minor diameter, can slow down the speed that intraductal liquid flows out, and the liquid volume that the control that can be more accurate flows out carries out accurate micropipette control.

(2) Through longer tubule, can move liquid measure when moving the liquid better control, long tubule has the length long enough and needs longer time when making the interior liquid of body flow out to pass through this tubule, provides the longer decision-making time of user promptly and continues to move the liquid or stop moving the liquid, can accomplish more accurate trace and move the liquid.

In addition, the storage tube of the technical scheme is simple and convenient to process, low in cost and suitable for mass production.

In a preferred embodiment, the tube, cap and connectors described below are all made of PP or COC, which has good comprehensive physical properties and is more suitable for medical, pharmaceutical, genetic and protein research, biological research, drug development laboratories and other biotechnology application fields.

Preferably, the inner diameter and length of tubule 3 may be varied to adjust pipetting accuracy according to actual use. In a preferred storage tube for micropipette use, the narrow tube 3 has an inner diameter in the range of 0.3mm to 1mm. In a preferred storage tube for micropipette use, the length of the narrow tube 3 is in the range of 20mm to 50mm. It should be understood that the specific dimensions of tubule 3 described above are merely exemplary, and that preservation tubes incorporating tubules 3 of other internal diameters and lengths are within the scope of the present application.

In a preferred embodiment, a filtering membrane 5 is further arranged in the preservation tube, and the filtering membrane 5 is fixedly arranged on the cover cap 2. When the cap 2 is attached to the tube body 1, the filtration membrane 5 faces the tube body 1, and the liquid in the tube body 1 is filtered by the filtration membrane 5 before entering the narrow tube 3.

In the preferred practical use example, the preservation pipe of this application is used for collecting nasopharynx swab or oropharynx swab, through extrudeing soft body 1, can make sample and the mixing of body in preservation liquid, when carrying out the liquid-transfering, through filter membrane 5 filter solid phase and mucus.

The liquid transfer mode in the practical use of the liquid transfer device comprises the steps of inverting the storage tube and extruding the tube body 1 to enable liquid in the tube body 1 to flow out; or other device to draw liquid from the tube through the tubule 3. It should be understood that the above-mentioned pipetting method is only an example, and any pipetting method using the storage tube of the present invention is covered by the present application.

With the utility model discloses still include a transfer cup that is provided with the scale that uses cooperatively, will liquid in the storage tube moves the liquid to shifting the cup through tubule 3, moves the scale on the liquid in-process reading transfer cup, when to specific scale, stops to move the liquid. The application saves the pipe because of being provided with tubule 3, and liquid-moving speed is slow to the volume is less, can realize reading the trace of meticulous scale value and move the liquid. In addition, in the pipetting process, because of the slow pipetting speed of the thin tube 3, the fault-tolerant space can be increased, and a user can move the thin tube 3 out of the range of the transfer cup at any time to stop pipetting.

For convenience of description, as shown in fig. 1 to 4, the orientation and the positional relationship are described based on the protection tube in fig. 4, that is, the positional relationship and the orientation of the tube are based on the tube in fig. 1 and 2, and the positional relationship and the orientation of the cap are based on the cap in fig. 3.

In a preferred embodiment, the upper end of the tube body 1 is open and the lower end is closed, the cross section of the bottom of the tube body 1 is semicircular, the transverse perimeter of the tube body 1 is uniformly reduced from top to bottom, and the top end of the tube body 1 is provided with a circular ring protruding out of the surface of the tube body 1.

As shown in fig. 3, the cap 2 includes a cylindrical insertion member inserted into the pipe body 1 and a hollow mount (tubule mount) for mounting the tubule 3. The thin tube mounting seat and the insertion part are respectively mounted on the upper end face and the lower end face of the limiting disc, and the diameter of the limiting disc is larger than that of the insertion part. The limiting disc is provided with a hole corresponding to the hollow position of the hollow mounting seat, and the hole is used for enabling liquid in the pipe body 1 to enter the hollow mounting seat and the thin pipe 3.

The diameter of the section of the insertion part is gradually reduced from the connecting end of the insertion part and the limiting disc in the extending process, and the reduction amplitude is the same as the reduction amplitude of the contact part of the insertion part in the pipe body 1 from top to bottom. Correspondingly, the outer diameter of the cross section of the insertion part is the same as the inner diameter of the corresponding position in the pipe. The corresponding position is that as shown in fig. 4, the cap 2 is inserted into the tube 1 in the transverse direction. After the cap 2 is inserted into the tube body 1, the opening of the tube body 1 can be sealed and closed.

In a preferred embodiment, a filtering membrane 5 is arranged in the cylindrical insertion part, and the liquid in the pipe body 1 passes through the filtering membrane 5 and flows out of the preservation pipe through the mounting seat and the thin pipe 3 in sequence. The filtering membrane 5 is attached to the inner peripheral wall of the inserting part and fixedly installed on the lower end face of the limiting disc. In the actual production process, the thickness or the pore diameter of the filtering membrane 5 can be changed to adapt to various use requirements.

In a preferred embodiment, as shown in fig. 1, 2 and 4, the tube body 1 and the cap 2 are connected into a whole through a bendable connecting piece 4. The connecting piece 4 is respectively fixedly arranged on the circular ring of the pipe body 1 and the limiting disc of the cap 2. As shown in fig. 1 and 4, the cap 2 and the tube 1 are in a second state (an attached state) and a first state (a separated state) to form the connector 4.

The connecting element 4 shown in fig. 1, 2 and 4 is a rectangular strip, but it should be understood that any shape of connecting element 4 capable of connecting the cap 2 and the pipe body 1 falls within the scope of the present invention.

As used in this application and in the claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to include the plural, unless the context clearly dictates otherwise. The terms "first" and "second" are not limiting words, and are used for explanation only and understanding of the technical solution of the present invention, and the terms "first" and "second" may be substituted for each other.

The components, relative arrangements, functions, and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Also, it is apparent that the dimensions of the various parts shown in the drawings are not drawn to scale in practice for ease of description. Techniques, methods and apparatus that are known to those of ordinary skill in the relevant art have not been described in detail for the time being, but are intended to be part of the specification as appropriate. In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as a limitation. Thus, other examples of step-wise embodiments may have a different order of precedence.

The foregoing is illustrative of the present invention and is not to be construed as limiting thereof. Although a few exemplary embodiments of the present invention have been described, those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments without materially departing from the novel teachings and advantages of this invention. Accordingly, all such modifications are intended to be included within the scope of this invention as defined in the claims. It is to be understood that the foregoing is illustrative of the present invention and is not to be construed as limited to the specific embodiments disclosed, and that modifications to the disclosed embodiments, as well as other embodiments, are intended to be included within the scope of the appended claims. The invention is defined by the claims and their equivalents.

Claims (8)

1. A preservation tube for micro-pipetting is characterized by comprising a flexible tube body with a closed bottom and an open top and a cap for fixing and closing the opening of the flexible tube body;

the block on be provided with outside extension's tubule, when this block is fixed and seal the opening of soft body, this tubule with the inside switch-on of soft body, preserve in liquid in the soft body passes through the tubule flows the preservation outside of tubes.

2. A holding tube for micropipettes according to claim 1, wherein the tube body and the cap are integrally connected by a bendable connecting member.

3. A holding tube for micropipettes according to claim 1, wherein a filtration membrane is provided at a position facing the inside of the tube body of the cap.

4. A holding tube for micropipettes according to claim 1, wherein said cap comprises a cylindrical insertion member inserted into the inside of said tube body and a hollow mounting seat for mounting said narrow tube.

5. A preservation tube for micropipette according to claim 4, wherein a filtration membrane is provided in said cylindrical insertion member, and the liquid inside said tube body passes through said filtration membrane and flows out of the preservation tube through said mounting seat and said tubule in this order.

6. A holding tube for micropipettes according to claim 1, wherein the thin tube is a flexible thin tube.

7. A preservation tube for micropipette according to claim 1, wherein the inner diameter of said narrow tube is in the range of 0.3mm to 1mm.

8. A preservation tube usable for micropipette according to claim 1, wherein the length of said tubule ranges from 20mm to 50mm.

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