CN218590560U

CN218590560U - Sampling tube

Info

Publication number: CN218590560U
Application number: CN202222054717.7U
Authority: CN
Inventors: 赵鹤翔; 肖琬玲; 何林富; 王弢
Original assignee: Anhui Weizhen Bioengineering Technology Co ltd; Jiangsu Microdiag Biomedicine Technology Co ltd
Current assignee: Anhui Weizhen Bioengineering Technology Co ltd; Jiangsu Microdiag Biomedicine Technology Co ltd
Priority date: 2022-08-05
Filing date: 2022-08-05
Publication date: 2023-03-10
Anticipated expiration: 2032-08-05

Abstract

The utility model discloses a sampling pipe, including pressing gasbag and pipette, still include the portion of gripping, the portion of gripping includes the cyclic annular flange on upper portion and the first installation department of lower part, it is located the cyclic annular flange to press gasbag at least partly. The utility model discloses creative has add a portion of gripping, this part makes when using the sampling tube, and the portion of gripping is held to the hand, and the strength of gripping can not be like prior art directly apply for the pipette or press the gasbag, and the lateral part that the gasbag will be pressed to cyclic annular flange encircles, plays fine guard action, has avoided the hand to touch the quantitative sampling that causes to the mistake of pressing the gasbag and has deviated, simultaneously, and the prior art is different, the utility model discloses an adopt the thumb from top to bottom to press the mode of pressing the gasbag to sample, the stability of single finger will be better than prior art's the many fingers far away and pinch pressure, in addition, the sampling tube that has the portion of gripping has better operating stability.

Description

Sampling tube

Technical Field

The utility model relates to a pipette field especially relates to a sampling pipe.

Background

In the field of in vitro diagnosis and analysis, a trace amount of liquid is required to be quantitatively absorbed and added into an analysis system, when the existing pipette is used for transferring the liquid, the lower end of a glass tube is inserted into the liquid, then an ear suction ball is squeezed by hands, the ear suction ball generates negative pressure suction force to suck the liquid into the glass tube, and the purpose of transferring the liquid is further achieved.

In the prior art, when liquid is transferred, after a required liquid amount is sucked, an operator keeps the strength of pressing the ear-sucking ball by hands, so that the liquid amount is positioned in the glass tube and is at the liquid transfer amount required by the operator, then the lower end of the glass tube is taken out of the liquid, and the sucked liquid is put into an experimental bottle and the like; according to the operation method, the force of pressing the auricle ball by a hand is not easy to master, the accuracy of the sucked liquid amount cannot be effectively guaranteed, in the process of transferring the glass tube from the liquid sucking to an experiment bottle and the like, the force of pressing the auricle ball by the hand is easy to change, and further the liquid leaks from the lower end of the glass tube and the like, so that the influence is brought to the accurate liquid transfer, even if an operator blocks the lower end of the glass tube by the hand after sucking the liquid to prevent the liquid from leaking, when the sucked liquid is corrosive, unnecessary safety risks can be brought to the operator, and the problem that the accuracy of the initial sucked liquid amount cannot be effectively guaranteed in the actual operation is also solved. The prior art also has a sampling tube with a quantitative pipette and a redundant bin, which can suck liquid exceeding the capacity of the pipette at one time, the part exceeding the capacity of the pipette can flow into the redundant bin, and the liquid in the pipette is the liquid with the determined capacity, so that simple and efficient quantitative sampling is realized.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sampling pipe has overcome prior art's drawback, simple structure, easily operation.

The utility model provides a sampling tube, including pressing gasbag and pipette, still include the portion of gripping, the portion of gripping includes the cyclic annular flange on upper portion and the first installation department of lower part, press the gasbag at least partly to be located cyclic annular flange, first installation department is connected with the lower extreme of pressing the gasbag or the upper portion of pipette, the lower extreme of pipette extends the lower extreme of the portion of gripping.

The utility model discloses creative has add a portion of gripping, this part makes when using the sampling tube, and the portion of gripping is held to the hand, and the strength of gripping can not be like prior art directly apply for the pipette or press the gasbag, and the lateral part that the gasbag will be pressed to cyclic annular flange encircles, plays fine guard action, has avoided the hand to touch the quantitative sampling that causes to the mistake of pressing the gasbag and has deviated, simultaneously, and the prior art is different, the utility model discloses an adopt the thumb from top to bottom to press the mode of pressing the gasbag to sample, the stability of single finger will be better than prior art's the many fingers far away and pinch pressure, in addition, the sampling tube that has the portion of gripping has better operating stability.

Further, an upper edge of the annular flange is equal to or higher than an uppermost end of the pressing bag.

The arrangement of the annular flange can better avoid unnecessary touch on the pressing air bag in the use process, and ensure the use reliability.

Furthermore, the first mounting portion is sleeved on the lower outer edge of the pressing air bag or the upper outer edge of the pipette, or the holding portion and the pressing air bag or the pipette are integrally formed.

The holding part can be a tubular structural component, the radial size of the inner diameter of the annular flange part of the upper part of the holding part is larger than the maximum outer diameter of the pressing air bag, the inner diameter of the first mounting part of the lower part of the holding part can be matched with the outer diameter of the upper part of the pipette, so that the holding part and the pipette can be sleeved and fixed together (or sleeved on the lower part of the pressing air bag), a scheme of integrally forming the holding part and the pressing air bag or the pipette can be adopted according to requirements, the external shape structure of the holding part can be a cylindrical shape with the same upper and lower diameters, and any shape convenient to hold can be set according to human engineering.

Further, the outer wall of the first mounting part extends downwards to form an extension part annularly covering the upper part of the pipette.

The annular flange is usually not too large in size for it to be matched to the size of the pressing balloon, and the first mounting portion is small in size for its connection to the pressing balloon or pipette, with extensions being provided for a comfortable grip.

Further, the pipette includes redundant storehouse and ration storehouse, redundant storehouse upper portion is equipped with the second installation department, press the gasbag including the gasbag body and with the third installation department of second installation department adaptation, the gasbag body lower extreme has the opening, the opening part is equipped with the third installation department, press the gasbag through third installation department and second installation department detachable sealing connection.

The utility model discloses a redundant storehouse and ration storehouse and detachable press the gasbag structure, can accurate ration sample, and easy operation is swift, gets the sample in the full storehouse of ration storehouse at every turn, and the volume error of sampling at every turn is in the permissible within range, and redundant storehouse is used for accepting the part liquid that the volume exceeded ration storehouse and overflowed according to the gasbag of pressing down. In addition, due to the adoption of the detachable pressing air bag design, the quantitative bin and the pressing air bag combination with different volumes can be selected according to different adopted volumes, and the sizes of the second connecting part and the third connecting part are unified in certain range or all ranges, so that the production of the adopted pipes with various specifications is modularized, and the cost is saved. In addition, in some special application scenes, the pressing air bag can be detached after being used every time, the redundant bin and the quantitative bin can be cleaned and can be reused, and the defects that in the prior art, the cleaning is difficult and the repeated use cannot be realized are overcome.

Furthermore, the volume of the redundant bin is larger than the difference value between the volume of the air bag body and the volume of the quantitative bin, and the volume of the air bag body is larger than the volume of the quantitative bin.

Generally, the sampling tube is disposable, so long as the volume of the redundant bin is larger than the difference value between the volume of the air bag body and the volume of the quantitative bin, the volume of the air bag body is one time larger than the volume of the quantitative bin, and the redundant bin is used for receiving the overflow liquid of the part of the air bag body, of which the pressed compression volume is larger than the volume of the quantitative bin, so that the quantitative bin can be ensured to be full, and the redundant bin which is as small as possible can be adopted, so that the cost is saved.

In some special application scenes, when repeated sampling is needed for multiple times, the volume of the redundant bin can be designed to be several times larger than that of the air bag, so that the air bag can be changed differently under the condition that the air bag is pressed to the bottom, repeated accurate sampling is carried out for multiple times, and the times are the times that the volume of the redundant bin is larger than that of the air bag. The volume of the redundant bin is generally integral multiple or more of the volume of the air bag, so that effusion in the redundant bin is prevented from flowing out to influence pipetting precision.

The detachable design of the pressing air bag can realize repeated use and accurate quantitative sampling under the situation without considering biological pollution.

Furthermore, the second installation department is located redundant storehouse upper end and has axial dimensions, and radial dimension is greater than redundant storehouse, the third installation department is equipped with ring form flange ring, ring form flange ring lower part is equipped with the extension that external dimension and redundant storehouse size match, the extension is inserted and is located in the upper portion in redundant storehouse. The annular flange ring plays a limiting role, and can play a dual role in enhancing sealing under certain conditions (the sealing structure design is carried out on the contact surface of the annular flange ring and the redundant bin). The extension part is inserted in the redundant bin, and can realize sealing connection by adopting interference fit.

Redundant storehouse and ration storehouse all have radial dimension and axial dimensions, the radial dimension in redundant storehouse is greater than the radial dimension in ration storehouse, the upper end in ration storehouse extends into redundant storehouse, and is equipped with the bottom that the overflow mouth just is higher than redundant storehouse on the ration storehouse. In some cases, the axial dimension of the redundant cartridge is greater than the axial dimension of the portion of the dosing cartridge located in the redundant cartridge, as desired.

Further, the installation department is located redundant storehouse upper end and has axial dimensions, and radial dimension is greater than redundant storehouse, the third installation department is equipped with ring form flange ring, ring form flange ring lower part is equipped with the gasbag extension that external dimension and redundant storehouse size match, the gasbag extension is inserted and is located in the upper portion in redundant storehouse.

Further, the airbag body is hemispherical.

Because the utility model discloses creative adoption is from top to bottom the mode of pressing, consequently adopts hemispherical gasbag body can realize better operation experience.

Further, a gap is formed between the inner wall of the extension part and the outer wall of the redundant bin.

Furthermore, the quantitative bin is a circular tube which is made of hydrophobic hard materials and has a radial size which is reduced from top to bottom.

Furthermore, the redundant bin and the quantitative bin are integrally formed by the same material.

The design that hard material pipette and pressing gasbag surround entirely can prevent to a certain extent that the material warp, and the ration that the extrusion caused is inaccurate.

Furthermore, the cross sections of the pressing air bag, the redundant bin and the quantitative bin are all circular rings, and the circle centers of the circular rings are located on the same vertical line.

Furthermore, accurate ration sampling pipe still includes the shell, the shell is one end closed one end open-ended cavity cylinder, the internal diameter and the pipette upper end or redundant storehouse sealing connection of opening one end, the ration storehouse is inserted and is located in the shell.

Further, one end of the opening of the shell is connected with the sampling pipe or the redundant bin through sealing threads.

Furthermore, the lower end of the shell is provided with a sample liquid bin with the inner diameter gradually reduced, and the lower end of the quantitative bin extends into the sample liquid bin.

Drawings

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making creative efforts shall fall within the protection scope of the present application.

Fig. 1-6 are schematic structural diagrams of different examples of the accurate quantitative sampling tube of the present invention.

Wherein the identification of each part is as follows:

the pressing airbag comprises a pressing airbag 1, an airbag body 11, a third mounting part 12, an annular flange ring 121, an airbag extension part 122, an opening 111, a cavity 212, a holding part 2, an annular flange 21, a first mounting part 24 and an extension part 23; a tubular cavity 22, the housing 3; a sealing thread 4; a sample liquid chamber 5, a pipette 6, a redundant chamber 61, a second mounting part 611, a quantitative chamber 62 and an overflow port 621.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

As shown in fig. 1, a sampling tube comprises a pressing air bag 1 and a pipette 6, and further comprises a holding part 2, wherein the holding part 2 comprises an upper annular flange 21 and a lower first mounting part 24, at least a part of the pressing air bag 1 is located in a tubular cavity 22 formed by the annular flange 21, the first mounting part 24 is connected with the lower end of the pressing air bag 1 in an interference fit manner or is bonded or is welded in a melting manner (or is connected with the upper part of the pipette), and the lower end of the pipette 6 extends out of the lower end of the holding part 2.

The utility model discloses creative having add a portion of gripping 2, this part makes when using the sampling pipe, and the portion of gripping 2 is held to the hand, and the strength that grips can not be like prior art directly apply for pipette 6 or press gasbag 1, and annular flange 21 encircles the lateral part of pressing gasbag 1, plays fine guard action, has avoided the hand to touch the ration sampling that bumps the cause to pressing mistake of gasbag 1 and has appeared the deviation, simultaneously, and the prior art difference is, the utility model discloses an adopt the thumb from top to bottom to press the mode of pressing gasbag 1 to sample, the stability of single finger will be better than prior art's the most fingers far away and pinch pressure, in addition, the sampling pipe that has portion of gripping 2 has better operating stability.

In some embodiments, the upper edge of the annular flange is equal to (as in the example of fig. 1 and 2) or higher than the uppermost end of the pressing bladder, so as not to interfere with the pressing of the pressing bladder by the fingers.

The provision of the annular flange 21 can better avoid unnecessary contact with the pressing airbag 1 during use, and ensure reliability of use.

In some embodiments, the first mounting portion 24 is disposed on the lower outer edge of the pressing air bag 1 (as shown in fig. 1) or the upper outer edge of the pipette, or the holding portion 2 is integrally formed with the pressing air bag 1. Of course, the grip 2 may also be formed integrally with the pipette.

The holding part 2 may be a tubular structure member, the radial dimension of the inner diameter of the annular flange 21 portion of the upper portion thereof is larger than the maximum outer diameter of the pressing air bag 1, and the inner diameter of the first mounting portion 24 of the lower portion thereof may be adapted to the outer diameter of the upper portion of the pipette, so that the two may be sleeved and fixed together (or sleeved on the lower portion of the pressing air bag, as shown in fig. 1), or may be integrally formed with the pressing air bag or the pipette as required, and the external shape structure of the holding part 2 may be a cylinder with the same upper and lower diameters, or may be set in any shape convenient to hold according to human engineering.

Further, the outer wall of the first mounting portion 24 extends downward to form an extension 23 annularly covering the upper part of the pipette 6.

The part of the annular flange 21 that is normally required to match the size of the pressing bladder is not too large in size, while the part of the first mounting portion 24 that is required to be connected to the pressing bladder or pipette is also small in size (here, the axial dimension), and an extension 23 is provided for a comfortable gripping size.

As shown in fig. 2, in some embodiments, the pipette 6 includes a redundant chamber 61 and a quantitative chamber 62, the redundant chamber 61 is provided with a second mounting portion 611 at an upper portion, the pressing airbag 1 includes an airbag body 11 and a third mounting portion 12 adapted to the second mounting portion 611, the airbag body 11 has an opening 111 at a lower end, the third mounting portion 12 is provided at the opening 111, and the pressing airbag is detachably and sealingly connected to the second mounting portion 611 through the third mounting portion 12.

The utility model discloses a redundant storehouse and ration storehouse and detachable press the gasbag structure, can accurate ration sample, and easy operation is swift, gets the sample in the full storehouse of ration storehouse at every turn, and the volume error of sampling at every turn is in the permissible within range, and redundant storehouse is used for accepting the part liquid that the volume exceeded ration storehouse and overflowed according to the gasbag of pressing down. In addition, due to the adoption of the detachable pressing air bag design, the quantitative bin with different volumes and the pressing air bag combination can be selected according to different adopted volumes, and the sizes of the second connecting part and the third connecting part are unified in certain range or all ranges, so that the production of sampling pipes with various specifications is modularized, and the cost is saved. In addition, in some special application scenes, after the air bag is used every time, the pressing air bag can be detached, the redundant bin and the quantitative bin can be cleaned and can be reused, and the defects that in the prior art, the air bag is difficult to clean and cannot be reused are overcome.

In practical application, the volume of the redundant chamber is larger than the difference value between the volume of the airbag body and the volume of the quantitative chamber, and the volume of the airbag body is larger than the volume of the quantitative chamber.

Generally, the sampling tube is disposable, so long as the volume of the redundant bin is larger than the difference value between the volume of the air bag body and the volume of the quantitative bin, the volume of the air bag body is one time larger than the volume of the quantitative bin, and the redundant bin is used for receiving the overflow liquid of the part of the air bag body, the compressed volume of which is larger than the volume of the quantitative bin, so that the quantitative bin can be ensured to be full, and the redundant bin which is as small as possible can be adopted, so that the cost is saved.

In some special application scenes, when repeated sampling is needed for multiple times, the volume of the redundant bin can be designed to be several times larger than that of the air bag, so that the air bag can be replaced under the condition that the air bag is pressed to the bottom, repeated and accurate sampling is carried out for multiple times, and the times are the times that the volume of the redundant bin is larger than that of the air bag. The volume of the redundant bin is generally integral multiple or more of the volume of the air bag, so that effusion in the redundant bin is prevented from flowing out to influence pipetting precision.

In some embodiments, the second installation portion is located redundant storehouse upper end and has axial dimensions, and radial dimensions is greater than redundant storehouse, the third installation portion is equipped with ring form flange ring, ring form flange ring lower part is equipped with the gasbag extension that external dimension and redundant storehouse size match, the gasbag extension is inserted and is located in the upper portion in redundant storehouse. The annular flange ring plays a limiting role, and can play a dual role in enhancing sealing under certain conditions (the sealing structure design is carried out on the contact surface of the annular flange ring and the redundant bin). The extension part is inserted in the redundant bin, and can realize sealing connection by adopting interference fit.

In some embodiments, as shown in fig. 2, the holding portion 2 is integrally formed with the redundant bin 61, and as can be seen in fig. 2, the first mounting portion 24 of the holding portion and the second mounting portion 611 of the redundant bin 61 are integrally formed, so that the annular flange 121 is larger than the upper diameter of the second mounting portion 611 of the redundant bin 61, and serves as a limiting function, and the airbag extension portion 122 is in interference sealing connection with the inner wall of the second mounting portion 611. The contact surface of the annular flange 121 and the redundant bin can also be provided with a sealing structure, so that the sealing effect is further enhanced.

Redundant storehouse and ration storehouse all have radial dimension and axial dimension, the radial dimension in redundant storehouse is greater than the radial dimension in ration storehouse, the upper end in ration storehouse extends into redundant storehouse, and the ration storehouse upper end is equipped with overflow mouth and is higher than the bottom in redundant storehouse. In some cases, the axial dimension of the redundant cartridge is greater than the axial dimension of the portion of the dosing cartridge located in the redundant cartridge, as desired.

In a preferred embodiment, the balloon body 11 has a hemispherical shape.

Because the utility model discloses the mode that creative adoption from top to bottom pressed consequently adopts hemispherical gasbag body can realize better operation and experience.

The design that hard material pipette and pressing gasbag surround entirely can prevent to a certain extent that the material from warping, and the ration that the extrusion caused is inaccurate.

In the prior art, for example, chinese with patent number CN203790960U exclusively discloses an improved micro quantitative pipette in 2014, 8 months and 27 days, which comprises a quantitative straight tube, a liquid containing cavity and a buffer cavity communicated with the liquid containing cavity, wherein one end of the quantitative straight tube is provided with a liquid suction port, and the other end of the quantitative straight tube is communicated with the liquid containing cavity. The micro quantitative straw has the advantages of convenient liquid absorption, accurate quantification, low manufacturing cost, good use effect, convenient and fast operation and easy large-scale popularization and application. However, such a micro-metering pipette also has its disadvantages: 1. the quantitative straight tube is easy to deform, so that the liquid absorbed is inaccurate in quantitative determination; 2. the straw has limited application environment and can not be reused.

As shown in fig. 2 and fig. 3, the present invention is an example of a sampling tube capable of accurately quantifying, including a pressing air bag 1, a pipette 6, wherein the pipette 6 includes a redundant chamber 61 and a quantitative chamber 62, the redundant chamber 61 and the quantitative chamber 62 both have a radial dimension and an axial dimension, the radial dimension of the redundant chamber 61 is greater than the radial dimension of the quantitative chamber 62, the upper end of the quantitative chamber 62 extends into the redundant chamber 61, and the upper end of the quantitative chamber 62 is provided with a liquid overflow 621 and is higher than the bottom of the redundant chamber 61; the axial dimension of the redundant cartridge 61 is greater than the axial dimension of the portion of the dosing cartridge 62 located in the redundant cartridge 62; redundant storehouse 61 upper portion is equipped with second installation department 611, press gasbag 1 including gasbag body 11 and with the third installation department 12 of second installation department 611 adaptation, gasbag body 11 lower extreme has opening 111, opening 111 department is equipped with third installation department 12, press gasbag 1 through third installation department 12 with installation department 211 detachable sealing connection.

The utility model discloses a redundant storehouse 61 and quantitative storehouse 62 and detachable press down gasbag 1 structure, can accurate ration sample, easy operation is swift (get the sample of the full storehouse in quantitative storehouse 62 at every turn, the volume error of taking a sample at every turn is in the permissible within range), in addition, owing to adopt detachable to press down gasbag 1 design, after using at every turn, can dismantle and press down gasbag 1, with redundant storehouse 61 and quantitative storehouse 62 sanitization, can used repeatedly, the difficulty of wasing among the prior art has been avoided, the drawback that can not reuse.

Preferably, the volume of the redundant bin is greater than integral multiple of the volume of the airbag body, and the volume of the airbag body is greater than integral multiple of the volume of the quantitative bin. The volume of the redundant bin can be designed to be several times of the volume of the air bag, so that the air bag can be changed differently under the condition that the air bag is pressed to the bottom, repeated and accurate sampling is carried out for many times, and the times are the multiples that the volume of the redundant bin is larger than the volume of the air bag. The volume of the redundant bin is generally integral multiple or more of the volume of the air bag, and the part which is larger than the integral multiple is used for preventing effusion in the redundant bin from flowing out to influence pipetting precision.

In some embodiments, the second mounting portion 611 is located at the upper end of the redundant bin 61 and has an axial dimension, and the radial dimension is greater than that of the redundant bin 61, the third mounting portion 12 is provided with an annular flange ring 121, an extension portion 122 with an external dimension matched with that of the redundant bin 61 is arranged at the lower portion of the annular flange ring 121, and the extension portion 122 is inserted into the upper portion of the redundant bin. The annular flange ring 121 plays a limiting role and also plays a role in strengthening sealing, the extension portion 122 can have an enough contact surface with the inner wall of the redundant bin 6, and can be in interference fit or other modes for realizing sealing connection, for example, the mode that more than 1 sealing ring is arranged on the periphery of the extension portion 122 can be adopted, and sealing connection can also be realized.

In some embodiments, the balloon body 11 is of a hemispherical structure. The hemispherical structure not only saves the manufacturing cost, but also facilitates the thumb pressing operation.

The setting of portion 2 that grips makes things convenient for the one hand to hold sampling pipe, accords with ergonomic more, increases the travelling comfort and the stability of operation.

In practical applications, it is preferable that the capacity of the redundant cartridge 61 is larger than the capacity of the airbag body 11. Therefore, the phenomenon that the sample sucked by the primary air bag body 11 exceeds the storage capacity of the redundant bin 61 to cause that the liquid level in the redundant bin 61 is higher than the overflow port 621 at the upper end of the quantitative bin 62 is avoided, and the accurate quantitative transfer of the sample cannot be realized. The utility model discloses can need not to consider above-mentioned problem, press and once can realize that accurate ration moves the liquid, improve operating efficiency and reliability.

In a preferred embodiment, the quantitative bin 62 is a circular tube made of hydrophobic hard material and having a radial size decreasing from top to bottom. The hydrophobic material can reduce the influence of the pipe wall hanging liquid on accurate quantification as much as possible, and the gradually reduced pipe diameter can reduce the dripping tendency of the liquid in the quantification bin 62.

In a preferred scheme, the redundant bin and the quantitative bin are integrally formed by adopting the same material.

In the embodiment, the design that the hard material pipette and the pressing air bag are completely surrounded is adopted, so that the material can be prevented from deforming to a certain extent, and the quantification caused by extrusion is inaccurate.

In a preferred scheme, the cross sections of the pressing air bag, the redundant bin and the quantitative bin are all circular rings, and the circle centers of the circular rings are positioned on the same vertical line.

In some embodiments, including pressing gasbag 1 and pipette 6, redundant storehouse 61 is located the upper end of pipette 6, pipette 6 lower extreme is accurate quantitative ration storehouse 62, press gasbag 1 and adopt the silica gel material, can press and absorb liquid, pipette 6 adopts transparent plastic to make, pipette 6, the interior outer surface smoothness and the no burr of redundant storehouse 61 and ration storehouse 62, the upper portion outer fringe of pipette is the cylinder, redundant storehouse 61 lower extreme draw-in platform, the finger is fixed when being handheld, after the inside liquid medicine of quantitative storehouse 62 is extruded, because the circular inner wall smoothness and the no burr of redundant storehouse 61 and ration storehouse 62, so the attached condition of liquid medicine can not appear in the inner wall of ration storehouse 62, thereby can effectually avoid the liquid medicine to remain, press the first half of gasbag 1 and adopt the spherical design, press gasbag 1 and pipette 2 and guarantee the interference fit through the silica gel and connect, press gasbag 1 to have elasticity and inside cavity, press gasbag 1 to be pressed and loosen after can reset automatically, when the liquid medicine, the user needs to be close to the plane of redundant storehouse 61 lower part of redundant storehouse 61 and support redundant finger, and press the pipette 62 to press the head and press gasbag 1 and press slowly and press down in the liquid medicine, press gasbag 1 and can be got up again to suction gasbag 1 and suction the liquid medicine to the redundancy storehouse, thereby can be reached the suction effect of the suction by the suction gasbag 1 again to the liquid medicine and suction.

As shown in FIG. 5, in practical applications, a protective shell 3 can be added to the measuring chamber 62, the protective shell 3 is a cup-shaped cylinder with an open upper end and a sealed lower end, the size of the upper end opening is matched with that of the shell at the lower end of the redundant chamber 61, the upper end of the shell 3 is sleeved on the lower end of the redundant chamber 61, the measuring chamber 62 is arranged in the shell 3 for protection, and a detachable sealing structure can be adopted between the shell 3 and the redundant chamber 61, so that the sampling tube can be prevented from being polluted before use. For example: comprises a pressing air bag 1 and a pipette 6, a redundant chamber 61 is positioned at the upper end of the pipette 6, the lower end of the pipette 6 is a precise quantitative chamber 62, the lower end of the pipette 6 is added with a shell 3 capable of protecting a quantitative area, the air bag is tightly clamped with the pipette 6 through interference between plastics, when in use, the shell 3 is taken down, the pressing air bag 1 is made of silica gel, the liquid can be sucked by pressing, the pipette 6 and the shell 3 are both made of transparent plastics, the inner and outer surfaces of the pipette 6, the redundant bin 61, the quantitative bin 62 and the shell 3 are smooth and have no burrs, when the liquid medicine in the quantitative bin 62 is extruded, because the round inner walls of the redundant bin 61 and the quantitative bin 62 are smooth and have no burrs, the outer edge of the upper part of the pipette is an elliptic cylinder, the inward-contracting platform at the lower end of the redundant bin 61 is extended, so that the pipette 6 can be better fixed by fingers when being held by hands, therefore, the inner wall of the quantitative bin 62 can not be attached with liquid medicine, so that the liquid medicine residue can be effectively avoided, the upper half part of the pressing air bag 1 adopts a spherical design, the pressing air bag 1 and the pipette 6 ensure air-tight connection through interference, the pressing air bag 1 has elasticity and hollow inside, the pressing air bag 1 can automatically reset after being pressed and loosened, when the liquid medicine is sucked, a user needs a forefinger and a middle finger to abut against the lower part of the pipette 6 close to the redundant bin 61, and the pipette tip at the lower end of the dosing chamber 62 is slowly brought closer to the medical fluid until the tip is submerged in the medical fluid, then the pressing air bag 1 is pressed by a thumb, the pressed pressing air bag 1 is released, the pressing air bag 1 can automatically reset at the moment, when the pressing air bag 1 is reset, suction effect is generated on the redundant bin 61 and the quantitative bin 62, so that liquid medicine is sucked into the quantitative bin 62 and the redundant bin 61 through the tip of the pipette 6.

As shown in fig. 6, in some embodiments, including the pressing air bag 1 and the pipette 6, the redundant chamber 61 is located at the upper end of the pipette 6, the lower end of the pipette 6 is a precise quantitative quantifying chamber 62, the lower end of the pipette 6 is connected to the housing 3 through a sealing thread 4, the housing 3 can protect the tube body at the quantifying chamber 62 during transportation, the lower end of the housing 3 is provided with a sample solution chamber 5 with a gradually reduced inner diameter (the inner diameter is gradually reduced, so that the usage amount of the sample solution can be saved, and of course, the sample solution chamber may not adopt a gradually reduced structure, for example, the structure of the housing 3 shown in fig. 4, the inner diameter of the housing 3 is completely consistent from top to bottom, and other usable shapes can also be adopted), and the lower end of the quantifying chamber 62 extends into the sample solution chamber 5. Sample liquid can be packaged in advance in the sample liquid bin 5, if the virus sampling tube can be used for containing sample liquid, and the quality control sample tube can be used for containing various scenes such as quality control products, the sample liquid is preset, the liquid storage device and the liquid transfer device can be integrally designed, the operation can be simplified, and the cost can be saved. The liquid level of sample liquid is higher than the lowest edge of a tube head of a pipette 6, a pressing air bag 1 is made of silica gel, liquid can be sucked by pressing, the pipette 6 and a shell 3 are both made of transparent plastics, the pipette 6, a redundant bin 61, the inner surface and the outer surface of the quantitative bin 62 and the shell 3 are smooth and burr-free, after sample liquid 5 in the quantitative bin 62 is extruded, the circular inner walls of the redundant bin 61 and the quantitative bin 62 are smooth and burr-free, sample liquid adhesion can not occur on the inner wall of the quantitative bin 62, sample liquid residue can be effectively avoided, the upper half part of the pressing air bag 1 is designed in a spherical surface mode, the air bag 1 and the pipette 6 are pressed to guarantee air-tight connection through interference, the pressing air bag 1 has elasticity and is hollow, the pressing air bag 1 can automatically reset after being pressed and loosened, when the sample liquid is sucked, a user needs a forefinger and a middle finger to abut against the lower part of the pipette 6 close to the redundant bin 61, the pipette head at the lower end of the quantitative bin 62 is slowly close to the sample liquid until the tube head is immersed into the sample liquid, then the tube head 1 is pressed by a thumb, and the redundant bin 61 and the redundant bin 62 can suck the redundant sample liquid.

Adopt the technical scheme of the utility model the accurate quantitative sampling pipe's in proper order of preparation actual precision verifies as shown in the following table:

TABLE 150ul sampling tube precision validation

Table 2 precision verification of 100ul sampling tubes

TABLE 3 150ul sampling tube precision verification

It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided would be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the pending claims along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego the subject matter and should not be construed as an admission that the applicant does not consider such subject matter to be part of the disclosed subject matter.

Claims

1. The utility model provides a sampling tube, is including pressing gasbag and pipette, its characterized in that still includes the portion of gripping, the portion of gripping includes the cyclic annular flange on upper portion and the first installation department of lower part, press the gasbag at least partly to be located cyclic annular flange, first installation department is connected with the lower extreme of pressing the gasbag or the upper portion of pipette, the lower extreme of pipette extends the lower extreme of the portion of gripping.

2. The sampling tube of claim 1, wherein the annular flange has an upper edge equal to or higher than an uppermost end of the depressing balloon.

3. The sampling tube of claim 1, wherein the first mounting portion is disposed over a lower outer edge of the pressing air bag or an upper outer edge of the pipette, or the holding portion is integrally formed with the pressing air bag or the pipette.

4. The sampling tube of claim 3, wherein the outer wall of the first mounting portion extends downwardly to form an extension annularly enclosing an upper portion of the pipette.

5. The sampling tube according to any one of claims 1 to 4, wherein the pipette comprises a redundant chamber and a quantitative chamber, a second installation part is arranged at the upper part of the redundant chamber, the pressing air bag comprises an air bag body and a third installation part matched with the second installation part, an opening is formed in the lower end of the air bag body, the third installation part is arranged at the opening, and the pressing air bag is detachably and hermetically connected with the second installation part through the third installation part.

6. The sampling tube of claim 5, wherein the volume of the redundant cartridge is greater than the difference between the volume of the balloon body and the volume of the dosing cartridge, and wherein the volume of the balloon body is greater than the volume of the dosing cartridge.

7. The sampling tube of claim 6, wherein the redundant cartridge and the dosing cartridge each have a radial dimension and an axial dimension, the radial dimension of the redundant cartridge is greater than the radial dimension of the dosing cartridge, the upper end of the dosing cartridge extends into the redundant cartridge, and the upper end of the dosing cartridge is provided with a spill port and is higher than the bottom of the redundant cartridge.

8. The sampling tube according to claim 7, wherein the second mounting portion is located at the upper end of the redundant bin and has an axial dimension, and the radial dimension is larger than that of the redundant bin, the third mounting portion is provided with an annular flange ring, the lower portion of the annular flange ring is provided with an air bag extension portion, the external dimension of which is matched with the size of the redundant bin, and the air bag extension portion is inserted into the upper portion of the redundant bin.

9. The sampling tube of claim 8, wherein the balloon body is hemispherical.

10. The sampling tube of claim 9, wherein the redundant cartridge and the dosing cartridge are integrally formed of the same material.

11. The sampling tube of claim 5, further comprising a housing, wherein the housing is a hollow cylinder with one end closed and one end open, the inner diameter of the open end is hermetically connected with the upper end of the pipette or a redundant cartridge, and the quantitative cartridge is inserted into the housing.

12. The sampling tube of claim 11, wherein the open end of the housing is threadably connected to the sampling tube or the redundant cartridge by a seal.

13. The sampling tube of claim 11, wherein the housing has a lower end with a sample chamber having a tapered inner diameter, and the lower end of the dosing chamber extends into the sample chamber.