WO2022156809A1

WO2022156809A1 - Biochemical test tube

Info

Publication number: WO2022156809A1
Application number: PCT/CN2022/073700
Authority: WO
Inventors: 王浩; 钱锐泽; 周中人
Original assignee: 上海快灵生物科技有限公司; 上海妙灵生物工程有限公司
Priority date: 2021-01-25
Filing date: 2022-01-25
Publication date: 2022-07-28
Also published as: CN112916070A

Abstract

A biochemical test tube, comprising a tube body (10) and a cover body (20), wherein the tube body (10) comprises a vent component (40) arranged on an inner wall of a tube opening of the tube body (10); and the cover body (20) comprises a first sealing component (50) arranged on an outer wall of the cover body (20). When the cover body (20) seals the tube body (10) for the first time, the first sealing member (50) is fitted with the vent component (40) for gas exchange between the interior of the tube body (10) and the exterior of the tube body (10); and when the cover body (20) seals the tube body (10) for the second time, the first sealing component (50) is in interference-fit with the inner wall of the tube body (10) below the vent component (40) such that the biochemical test tube is in a sealed state.

Description

a biochemical test tube

technical field

The invention relates to the technical field of biochemical detection devices, in particular to a biochemical test tube.

Background technique

When preparing a sample solution or drying the sample, it is usually necessary to separate the lid of the biochemical test tube from the test tube, and then perform related operations.

In the process of preparing the sample solution, since the test tube mouth of the test tube is open, it is easy to cause impurities to enter the interior of the test tube and contaminate the sample. In addition, the existing biochemical test tubes are inconvenient for operations such as vacuuming

In the process of drying the sample, after the biochemical test tube is taken out of the instrument, the auxiliary element for ventilation needs to be removed, and then the cap and the test tube are inserted or screwed to complete the sealing. Since the process of removal and reconnection will last for a certain period of time, it is easy to cause external water vapor to enter the interior of the test tube, resulting in an increase in the moisture content of the sample, which cannot meet the requirements for use, and requires repeated drying, wasting inspection time.

At present, in the related art, there are problems that the vacuum operation is complicated and the moisture content increases after drying, and no effective solution has been proposed.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a biochemical test tube in view of the deficiencies in the prior art, so as to at least solve the problems of complicated vacuum operation and increased moisture content after drying in the related art.

For realizing the above-mentioned purpose, the technical scheme that the present invention takes is:

A first aspect of the present invention provides a biochemical test tube, comprising a tube body and a cover body, including:

The tube body includes:

a ventilation part, the ventilation part is arranged on the inner wall of the nozzle of the pipe body;

The cover body includes:

a first sealing member, the first sealing member is disposed on the outer wall of the cover body;

Wherein, when the cover body seals the tube body for the first time, the first sealing member is in contact with the ventilation member, so that the inside of the tube body and the outside of the tube body are in contact with each other. gas exchange through the ventilation member;

When the cover body seals the tube body for the second time, the first sealing member is in interference fit with the inner wall of the tube body below the ventilation member, so as to make the biochemical test tube in a sealed state.

In some of these embodiments, the tubular body further includes:

a first fitting part, the first fitting part is arranged on the inner wall of the nozzle of the pipe body, and is connected with the ventilation part;

The cover body also includes:

a second fitting part, the second fitting part is arranged on the outer wall of the cover body;

Wherein, when the cover body seals the tube body for the first time, the second fitting member does not contact the first fitting member, and the first sealing member and the first fitting member are not in contact with each other. fitting part fitting;

When the cover body seals the tube body for the second time, the second fitting member is fitted and connected to the first fitting member.

In some of these embodiments, the depth at which the first fitting member is embedded into the inner wall of the tube body is smaller than the depth at which the ventilation member is embedded into the inner wall of the tube body.

In some of these embodiments, the tubular body further includes:

a second sealing member, the second sealing member is arranged on the inner wall of the nozzle of the pipe body, and is located below the ventilation member;

Wherein, when the cover body seals the tube body for the first time, the first sealing member is in contact with the second sealing member, and the first sealing member is located on the second sealing member above;

When the cover body seals the tube body for the second time, the first sealing member is located below the second sealing member, and the first sealing member passes through the inner wall of the tube body In an interference fit, the second sealing component is in an interference fit with the outer wall of the cover body.

In some of these embodiments, it also includes:

A connecting body is respectively connected with the pipe body and the cover body, and the pipe body, the cover body and the connecting body are integrally injection-molded.

In some of the embodiments, the ventilation component is a plurality of ventilation grooves, and the ventilation grooves are distributed in an annular array on the inner wall of the nozzle of the pipe body.

In some of these embodiments, the cover includes:

an opening, the opening is arranged through the cover body;

a third sealing member, the third sealing member is disposed at one end of the opening to seal the opening;

a sealing elastic member, the sealing elastic member is arranged on one side of the third sealing member;

The sealing elastic member includes a scratch, and the scratch is arranged on a side of the sealing elastic member away from the third sealing member;

Wherein, when an external force is applied to the sealing elastic member, the sealing elastic member protrudes toward the third sealing member at the position of the scratch; when the external force applied to the sealing elastic member disappears Next, the sealing elastic member is reset.

In some of these embodiments, the cover further includes:

a positioning member, the positioning member is provided inside the opening, the third sealing member is attached to the positioning member, and the inner diameter of the positioning member is smaller than the inner diameter of the opening and smaller than the third sealing member the inner diameter.

In some of these embodiments, the cover further includes:

A limiting member, the limiting member is disposed on a side of the sealing elastic member away from the third sealing member.

In some of these embodiments, in some of these embodiments, the cover further includes:

a third fitting part, the third fitting part is arranged on the inner wall of the opening;

The limiting components include:

A fourth fitting member is provided on the outer wall of the stopper member, and the fourth fitting member is fitted and connected to the third fitting member.

A second aspect of the present invention provides a biochemical test tube, comprising a tube body and a cover, and the tube body includes:

a first sealing member, the first sealing member is arranged on the inner wall of the nozzle of the pipe body;

The cover body includes:

a ventilation part, the ventilation part is arranged on the outer wall of the cover body;

Wherein, when the cover body seals the tube body for the first time, the first sealing member is fitted with the ventilation member, so that the inside of the tube body and the inner part of the tube body are fitted with each other. External gas exchange;

In some of these embodiments, the tubular body further includes:

a first fitting part, the first fitting part is arranged on the inner wall of the nozzle of the pipe body;

The cover body also includes:

a second fitting part, the second fitting part is arranged on the outer wall of the cover body and is connected with the ventilation part;

Wherein, when the cover body seals the tube body for the first time, the second fitting member and the first fitting member are not in contact, and the first sealing member and the second fitting member are not in contact with each other. fitting part fitting;

In some of these embodiments, the depth at which the second fitting part is embedded into the outer wall of the cover body is smaller than the depth at which the ventilation part is embedded in the outer wall of the cover body.

In some of these embodiments, the cover further includes:

a second sealing member, the second sealing member is arranged on the outer wall of the cover body and is located above the ventilation member;

Wherein, when the cover body seals the tube body for the first time, the first sealing member contacts the second sealing member, and the first sealing member is located on the side of the second sealing member. below;

When the cover body seals the tube body for the second time, the first sealing member is located above the second sealing member, and the first sealing member passes through the outer wall of the cover body. In an interference fit, the second sealing component is in an interference fit with the inner wall of the nozzle of the pipe body.

In some of these embodiments, it also includes:

In some of the embodiments, the ventilation component is a plurality of ventilation grooves, and the ventilation grooves are distributed in an annular array on the outer wall of the cover body.

In some of these embodiments, the cover includes:

an opening, the opening is arranged through the cover body;

In some of these embodiments, the cover further includes:

The limiting components include:

The present invention adopts the above technical scheme, compared with the prior art, has the following technical effects:

In the biochemical test tube of the present invention, through the arrangement of the ventilation part and the first sealing part, the tube body can be switched between a semi-closed state and a fully-closed state, and gas exchange operation or solution preparation operation can be performed in the semi-closed state , The operation is simple, and the use of two-stage sealing can solve the problem of moisture return and water absorption after drying, and avoid the problem of impurities entering the tube body and contaminating the sample.

Description of drawings

Fig. 1 is the schematic diagram (1) of the biochemical test tube according to the present application;

2 is a sectional view (1) of a biochemical test tube according to the present application;

Fig. 3 is the schematic diagram (1) of the use state of the biochemical test tube according to the present application;

Fig. 4 is according to the use state schematic diagram (2) of the biochemical test tube of the present application;

Fig. 5 is the schematic diagram (two) of the biochemical test tube according to the present application;

6 is a sectional view (two) of a biochemical test tube according to the present application;

Fig. 7 is the schematic diagram (three) of the use state of the biochemical test tube according to the present application;

8 is a schematic diagram of the use state of the biochemical test tube according to the present application (four);

Fig. 9 is the schematic diagram (three) of the biochemical test tube according to the present application;

Figure 10 is a sectional view (three) of a biochemical test tube according to the present application;

Figure 11 is a schematic diagram (5) of the use state of the biochemical test tube according to the present application;

12 is a schematic diagram of the use state of the biochemical test tube according to the present application (six);

Figure 13 is a schematic diagram (four) of a biochemical test tube according to the present application;

14 is a sectional view (four) of a biochemical test tube according to the present application;

15 is a schematic diagram of the use state of the biochemical test tube according to the present application (seven);

16 is a schematic diagram of the use state of the biochemical test tube according to the present application (eight);

Figure 17 is a schematic diagram (five) of a biochemical test tube according to the present application;

Figure 18 is a schematic diagram (six) of a biochemical test tube according to the present application;

Figure 19 is a schematic diagram (nine) of the use state of the biochemical test tube according to the present application;

Figure 20 is a schematic diagram (ten) of the use state of the biochemical test tube according to the present application;

Figure 21 is a top view of a pipe body according to the present application;

22 is a cross-sectional view of a tube body according to the present application.

The reference signs are: 10, pipe body; 20, cover body; 30, connecting body; 40, ventilation part; 50, first sealing part; 60, second sealing part; 70, first fitting part; 80 , the second fitting part;

21, opening; 22, third sealing part; 23, sealing elastic part; 24, scratch; 25, positioning part; 26, limit part; 27, third fitting part; 28, fourth fitting part.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but it is not intended to limit the present invention.

Example 1

An exemplary embodiment of the present invention, as shown in Figures 1-2, a biochemical test tube includes a tube body 10, a cover body 20 and a connecting body 30, the tube body 10 is connected with the cover body 20 through the connecting body 30, and the tube The body 10 , the cover body 20 and the connecting body 30 are integrally injection-molded.

The pipe body 10 includes a ventilation part 40 arranged on the inner wall of the nozzle of the pipe body 10, and is used to exchange gas between the inside and the outside of the pipe body 10 through the ventilation part 40 when the pipe body 10 is in a semi-closed state, such as a vacuuming operation. , Keep the internal and external pressures of the pipe body 10 consistent.

In some of the embodiments, the ventilation member 40 is a plurality of ventilation grooves, and the plurality of ventilation grooves are distributed in an annular array on the inner wall of the nozzle of the pipe body 10 , and the inner diameter of each ventilation groove is equal to the inner diameter of the nozzle of the pipe body 10 . The outer diameter of the ventilation groove is smaller than the outer diameter of the nozzle of the pipe body 10 .

The cover body 20 includes a first sealing member 50 disposed on the outer wall of the cover body 20, which is used for interference fit with the inner wall of the nozzle of the pipe body 10 when the cover body 20 completely closes the pipe body 10 to prevent the pipe body 10 from being damaged. The inside exchanges gas with the outside of the tube body 10 .

In some of the embodiments, the first sealing member 50 is an annular protrusion whose outer diameter is larger than the inner diameter of the orifice of the pipe body 10 .

In some of these embodiments, the outer diameter of the first sealing member 50 is smaller than the outer diameter of the ventilation member 40 , that is, during the process of closing the tube body 10 by the cover body 20 , the first sealing member 50 is embedded in the ventilation member 40 , but the first sealing member 50 is inserted into the ventilation member 40 . The sealing member 50 cannot block the vent member 40 .

The connecting body 30 is a connecting bar, which makes the tube body 10 and the cover body 20 integrally connected, avoiding the problem of manually assembling the tube body 10 and the cover body 20 due to the split design, reducing the production process and improving the production efficiency.

The use method of this embodiment is as follows: as shown in FIG. 3 , the cover body 20 seals the tube body 10 for the first time (semi-closed state), the first sealing member 50 of the cover body 20 is inserted into the ventilation member 40 of the tube body 10, Since the outer diameter of the first sealing member 50 is smaller than the outer diameter of the ventilation member 40, the inside of the tube body 10 can exchange gas with the outside of the tube body 10 through the ventilation member 40; as shown in FIG. downward movement, the cover body 20 seals the tube body 10 for the second time (completely closed state or sealed state), the first sealing part 50 of the cover body 20 is in interference fit with the inner wall of the tube body 10 located below the ventilation part 40, this When the gas is exchanged between the inside of the tube body 10 and the outside of the tube body 10, the biochemical test tube is in a sealed state.

An application scenario of the present invention is as follows: when the sample is freeze-dried, the water or solvent in the biochemical test tube can be discharged to the outside of the biochemical test tube through the ventilation part 40 by using the semi-closed state; 20 Apply a downward pressure to complete the sealing of the biochemical test tube, so as to prevent water vapor from entering the interior of the biochemical test tube again. The biochemical test tube is easy to operate and utilizes two-stage sealing, which can solve the problems of moisture return and water absorption after drying.

Example 2

This embodiment is a modified embodiment of Embodiment 1. As shown in FIGS. 5 to 6 , a biochemical test tube includes a tube body 10 , a cover body 20 and a connecting body 30 , and the tube body 10 is connected to the cover body 20 through the connecting body 30 . connected, and the tube body 10 , the cover body 20 and the connecting body 30 are integrally injection-molded.

The structures and connection relationships of the cover body 20 and the connecting body 30 are basically the same as those in Embodiment 1, and will not be repeated here.

The pipe body 10 includes a ventilation part 40 arranged on the inner wall of the nozzle of the pipe body 10, and is used to exchange gas between the inside and the outside of the pipe body 10 through the ventilation part 40 when the pipe body 10 is in a semi-closed state, such as a vacuuming operation. , Keep the inner and outer pressures of the pipe body 10 consistent.

The ventilation member 40 is an annular ventilation groove, the inner diameter of the ventilation member 40 is equal to the inner diameter of the nozzle of the pipe body 10 , and the outer diameter of the ventilation member 40 is smaller than the outer diameter of the nozzle of the pipe body 10 .

The use method of this embodiment is as follows: as shown in FIG. 7 , the cover body 20 seals the tube body 10 for the first time (semi-closed state), and the bottom of the first sealing member 50 of the cover body 20 is connected to the ventilation member of the tube body 10 for the first time. 40 is in contact with the bottom, that is, the cover body 20 and the tube body 10 are in an overlapping state, which is an open state, and the outer diameter of the first sealing member 50 is smaller than the outer diameter of the ventilation member 40. Therefore, the inside of the tube body 10 is in an open state. Gas can be exchanged with the outside of the tube body 10 through the ventilation member 40; as shown in FIG. 8, the cover body 20 continues to move downward, and the cover body 20 seals the tube body 10 for the second time (completely closed state or sealed state), The first sealing member 50 of the cover body 20 is in an interference fit with the inner wall of the tube body 10 located below the ventilation member 40. At this time, the inside of the tube body 10 and the outside of the tube body 10 cannot exchange gas, so that the biochemical test tube is sealed. state.

Example 3

This embodiment is a modified embodiment of Embodiment 1. As shown in FIGS. 9 to 10 , a biochemical test tube includes a tube body 10 , a cover body 20 and a connecting body 30 , and the tube body 10 is connected to the cover body 20 through the connecting body 30 . connected, and the tube body 10 , the cover body 20 and the connecting body 30 are integrally injection-molded.

The pipe body 10 includes a ventilation member 40 provided on the inner wall of the nozzle of the pipe body 10 and a second sealing member 60 provided on the inner wall of the nozzle of the pipe body 10 . Wherein, the ventilation member 40 is used to exchange gas between the inside and the outside of the tube body 10 through the ventilation member 40 when the tube body 10 is in a semi-closed state, such as vacuuming operation, to keep the inner and outer pressures of the tube body 10 consistent; the second sealing The part 60 is arranged below the ventilation part 40, for when the pipe body 10 is in a semi-closed state, the first sealing part 50 is located above the second sealing part 60, and when the pipe body 10 is in a completely closed state, the first sealing part 50 is located below the second sealing member 60 .

The structure and connection relationship of the ventilation member 40 are basically the same as those in the first embodiment, and are not repeated here.

The first sealing member 50 is a sealing convex ring, and the second sealing member 60 is a sealing convex ring.

The inner diameter of the second sealing member 60 is smaller than the outer diameter of the first sealing member 50 .

The use method of this embodiment is as follows: as shown in FIG. 11 , the cover body 20 seals the tube body 10 for the first time (semi-closed state), and the first sealing member 50 of the cover body 20 is located at the second sealing member of the tube body 10 Above 60 , since the outer diameter of the first sealing member 50 is larger than the inner diameter of the second sealing member 60 , under the blocking of the second sealing member 60 , the first sealing member 50 will not interact with the inner wall of the orifice of the pipe body 10 . With the interference fit, the inside of the tube body 10 can exchange gas with the outside of the tube body 10 through the ventilation part 40; as shown in FIG. (completely closed state or sealed state), the first sealing member 50 of the cover body 20 passes over the second sealing member 60 of the tube body 10 and then interferes with the inner wall of the tube body 10 located below the ventilation member 40. At this time, in the first Under the action of the first sealing member 50 and the second sealing member 60, the inside of the tube body 10 and the outside of the tube body 10 cannot exchange gas, so that the biochemical test tube is in a sealed state.

The advantage of this embodiment is that the second sealing member can be used for positioning, which is convenient for the user to judge the sealing state of the cover body and the tube body according to the different positions of the first sealing member, so as to satisfy the difference between the ventilation of the biochemical test tube and the sealing of the biochemical test tube. state switching.

Example 4

This embodiment is a modified embodiment of Embodiment 1. As shown in FIGS. 13 to 14 , a biochemical test tube includes a tube body 10 , a cover body 20 and a connecting body 30 , and the tube body 10 is connected to the cover body 20 through the connecting body 30 . connected, and the tube body 10 , the cover body 20 and the connecting body 30 are integrally injection-molded.

The structure and connection relationship of the connecting body 30 are basically the same as those in Embodiment 1, and are not repeated here.

The pipe body 10 includes the ventilation member 40 provided on the inner wall of the nozzle of the pipe body 10 , and the first fitting member 70 provided on the inner wall of the nozzle of the pipe body 10 . Wherein, the ventilation member 40 is used to exchange gas between the inside and the outside of the tube body 10 through the ventilation member 40 when the tube body 10 is in a semi-closed state, such as vacuuming, to keep the inner and outer pressures of the tube body 10 consistent; The engaging member 70 is connected with the ventilation member 40 for the first fitting with the cover body 20 when the tube body 10 is in a semi-closed state, and the second fitting with the cover body 20 when the tube body 10 is in a completely closed state. Secondary chimera.

In some of these embodiments, the first fitting part 70 is a fitting groove, the inner diameter of which is equal to the inner diameter of the orifice of the pipe body 10 , and the outer diameter of which is smaller than the outer diameter of the orifice of the pipe body 10 and smaller than that of the ventilation part 40 the outer diameter.

The cover body 20 includes a first sealing member 50 and a second fitting member 80 provided on the outer wall of the cover body 20 . Wherein, the first sealing member 50 is used for interference fit with the first fitting member 70 when the cover body 20 is semi-closed the tube body 10 , and is used for interference fit with the first fitting member 70 when the cover body 20 completely seals the tube body 10 . The inner wall of the orifice of the pipe body 10 is in an interference fit to prevent gas exchange between the inside of the pipe body 10 and the outside of the pipe body 10; In the case of the tubular body 10 , it is fitted with the first fitting member 70 .

The structure and connection relationship of the first sealing member 50 are basically the same as those in Embodiment 1, and are not repeated here.

In some of the embodiments, the second fitting part 80 is a fitting protrusion whose outer diameter is equal to the outer diameter of the first fitting part 70 and smaller than the outer diameter of the first sealing part 50 .

The use method of this embodiment is as follows: as shown in FIG. 15 , the cover body 20 seals the tube body 10 for the first time (semi-closed state), and the first sealing member 50 of the cover body 20 is first fitted with the tube body 10 . When the components 70 are fitted, since the outer diameter of the first sealing member 50 is smaller than the outer diameter of the ventilation member 40, the inside of the tube body 10 can exchange gas with the outside of the tube body 10 through the ventilation member 40; as shown in FIG. 16, The cover body 20 continues to move downward, the cover body 20 seals the tube body 10 for the second time (completely closed state or sealed state), the first sealing part 50 of the cover body 20 and the inner wall of the tube body 10 located below the ventilation part 40 By interference fit, the second fitting part 80 of the cover body 20 is fitted with the first fitting part 70 of the tube body 10 . At this time, the gas exchange between the inside of the tube body 10 and the outside of the tube body 10 cannot be performed, so that the biochemical The test tube is sealed.

The advantage of this embodiment is that the first fitting part and the second fitting part are used for fitting connection, under the double action of interference fit and fitting connection, the difficulty of separating the cover body from the tube body is greatly improved, avoiding In the case where the cap body completely closes the tube body, the cap body is separated from the tube body.

Example 5

This embodiment is a modified embodiment of Embodiment 4. As shown in FIGS. 17 to 18 , a biochemical test tube includes a tube body 10 , a cover body 20 and a connecting body 30 , and the tube body 10 is connected to the cover body 20 through the connecting body 30 . connected, and the tube body 10 , the cover body 20 and the connecting body 30 are integrally injection-molded.

The structure and connection relationship of the connecting body 30 are basically the same as those in Embodiment 3, and are not repeated here.

The pipe body 10 includes the first sealing member 50 provided on the inner wall of the nozzle of the pipe body 10 and the first fitting member 70 provided on the inner wall of the nozzle of the pipe body 10 . The first sealing member 50 is used to fit the cover body 20 when the tube body 10 is in a semi-closed state, and to perform interference fit with the cover body 20 when the tube body 10 is in a completely closed state; The engaging member 70 is not in contact with the first sealing member 50, and is used for fitting with the cover body 20 when the tube body 10 is in a completely closed state.

In some of the embodiments, the first sealing member 50 is an annular protrusion whose inner diameter is smaller than the inner diameter of the nozzle of the pipe body 10 .

In some of the embodiments, the first fitting member 70 is a fitting protrusion, the inner diameter of which is smaller than the inner diameter of the orifice of the pipe body 10 and larger than the inner diameter of the first sealing member 50 .

The lid body 20 includes a ventilation member 40 provided on the outer wall of the lid body 20 and a second fitting member 80 provided on the outer wall of the lid body 20 . Wherein, the ventilation member 40 is used to exchange gas between the inside and the outside of the tube body 10 through the ventilation member 40 when the tube body 10 is in a semi-closed state, such as a vacuuming operation, to keep the inner and outer pressures of the tube body 10 consistent; The engaging member 80 is connected to the ventilation member 40 for the first fitting with the first sealing member 50 when the tube body 10 is in a semi-closed state, and for first fitting with the first sealing member 50 when the tube body 10 is in a completely closed state The component 70 is fitted for the second time.

In some of the embodiments, the ventilation member 40 is a plurality of ventilation grooves, and the plurality of ventilation grooves are distributed in an annular array on the outer wall of the cover body 20. The outer diameter of each ventilation groove is equal to the outer diameter of the cover body 20. The inner diameter is larger than the inner diameter of the cover body 20 .

In some of the embodiments, the second fitting part 80 is a fitting groove, the inner diameter of which is larger than the inner diameter of the ventilation part 40 .

In some of these embodiments, the inner diameter of the first sealing member 50 is larger than the inner diameter of the venting member 40, that is, during the process of closing the tube body 10 by the cover body 20, the first sealing member 50 is embedded in the venting member 40, but the first sealing member 50 cannot block the vent member 40 .

The use method of this embodiment is as follows: as shown in FIG. 19 , the cover body 20 seals the tube body 10 for the first time (semi-closed state), and the first sealing member 50 of the tube body 10 is fitted with the second cover body 20 The components 80 are fitted together. Since the inner diameter of the first sealing member 50 is larger than the inner diameter of the ventilation member 40, the inside of the tube body 10 can exchange gas with the outside of the tube body 10 through the ventilation member 40; as shown in FIG. 20, the cover body 20 continues to move downward, the cover body 20 seals the tube body 10 for the second time (completely closed state or sealed state), the first sealing part 50 of the tube body 10 and the outer wall of the cover body 20 located above the ventilation part 40 interfere with each other In cooperation, the second fitting part 80 of the cover body 20 is fitted with the first fitting part 70 of the tube body 10. At this time, the inside of the tube body 10 and the outside of the tube body 10 cannot exchange gas, so that the biochemical test tube is in the sealed state.

Example 6

This embodiment is a modified embodiment of the third embodiment. A biochemical test tube includes a tube body 10 , a cover body 20 and a connecting body 30 , the tube body 10 is connected with the cover body 20 through the connecting body 30 , and the tube body 10 , the cover body 20 and the connecting body 30 are integrally injection-molded.

The pipe body 10 includes a first sealing member 50 disposed on the inner wall of the nozzle of the pipe body 10 . The first sealing member 50 is used for fitting with the cover body 20 when the tube body 10 is in a semi-closed state, and for interference fit with the cover body 20 when the tube body 10 is in a completely closed state.

The cover body 20 includes a ventilation member 40 provided on the outer wall of the cover body 20 and a second sealing member 60 provided on the outer wall of the cover body 20 . Wherein, the ventilation member 40 is used to exchange gas between the inside and the outside of the tube body 10 through the ventilation member 40 when the tube body 10 is in a semi-closed state, such as vacuuming operation, to keep the inner and outer pressures of the tube body 10 consistent; the second sealing The part 60 is arranged above the ventilation part 40, for when the tube body 10 is in a semi-closed state, the first sealing part 50 is located below the second sealing part 60, and when the tube body 10 is in a completely closed state, the first sealing part 50 is located above the second sealing member 60 .

In some of the embodiments, the ventilation member 40 is an annular ventilation groove, the outer diameter of the ventilation member 40 is equal to the outer diameter of the cover body 20 , and the inner diameter of the ventilation member 40 is smaller than the inner diameter of the cover body 20 .

The use method of this embodiment is as follows: the cover body 20 seals the tube body 10 for the first time (semi-closed state), and the second sealing member 60 of the cover body 20 is located above the first sealing member 50 of the tube body 10. The outer diameter of the first sealing member 50 is larger than the inner diameter of the second sealing member 60 . Therefore, under the blocking of the second sealing member 60 , the first sealing member 50 will not interfere with the outer wall of the cover body 20 . The inside can exchange gas with the outside of the tube body 10 through the ventilation member 40; the cover body 20 continues to move downward, and the cover body 20 seals the tube body 10 for the second time (completely closed state or sealed state), and the first time the tube body 10 is closed. After a sealing member 50 passes over the second sealing member 60 of the cover body 20, it is in interference fit with the outer wall of the cover body 20 located above the ventilation member 40. At this time, under the action of the first sealing member 50 and the second sealing member 60, There is no gas exchange between the inside of the tube body 10 and the outside of the tube body 10, so that the biochemical test tube is in a sealed state.

Example 7

This embodiment is a combination of Embodiment 3 and Embodiment 4. A biochemical test tube includes a tube body 10 , a cover body 20 and a connecting body 30 , the tube body 10 is connected with the cover body 20 through the connecting body 30 , and the tube body 10 , the cover body 20 and the connecting body 30 are integrally injection-molded.

The pipe body 10 includes a ventilation member 40 provided on the inner wall of the nozzle of the pipe body 10 , a second sealing member 60 provided on the inner wall of the nozzle of the pipe body 10 , and a first fitting member 70 provided on the inner wall of the nozzle of the pipe body 10 . . Wherein, the ventilation member 40 is used to exchange gas between the inside and the outside of the tube body 10 through the ventilation member 40 when the tube body 10 is in a semi-closed state, such as vacuuming operation, to keep the inner and outer pressures of the tube body 10 consistent; the second sealing The part 60 is arranged below the ventilation part 40, for when the pipe body 10 is in a semi-closed state, the first sealing part 50 is located above the second sealing part 60, and when the pipe body 10 is in a completely closed state, the first sealing part 50 is located below the second sealing member 60; the first fitting member 70 is connected to the vent member 40 for the first fitting with the cover body 20 when the tube body 10 is in a semi-closed state, and the first fitting member 70 In a completely closed state, the second fitting is performed with the lid body 20 .

The structure and connection relationship of the ventilation member 40 are basically the same as those of the first embodiment, the structure and connection relationship of the second sealing member 60 are basically the same as those of the second embodiment, and the structure and the connection relationship of the first fitting member 70 are basically the same as those of the third embodiment. are the same and will not be repeated here.

The structures and connection relationships of the first sealing member 50 and the second fitting member 80 are basically the same as those in Embodiment 3, and will not be repeated here.

The use method of this embodiment is as follows: the cover body 20 seals the tube body 10 for the first time (semi-closed state), the first sealing member 50 of the cover body 20 is located above the second sealing member 60 of the tube body 10, and the cover body The second fitting member 80 of 20 is located above the first fitting member 70 of the tubular body 10. Since the outer diameter of the first sealing member 50 is larger than the inner diameter of the second sealing member 60, the second sealing member 60 blocks the Then, the first sealing member 50 will not interfere with the inner wall of the nozzle of the tube body 10, and the inside of the tube body 10 can exchange gas with the outside of the tube body 10 through the ventilation member 40; the cover body 20 continues to move downward, The cover body 20 seals the tube body 10 for the second time (completely closed state or sealed state), and the first sealing member 50 of the cover body 20 passes over the second sealing member 60 of the tube body 10 and is connected to the tube body located below the ventilation member 40. The inner wall of 10 is in an interference fit, and the second fitting part 80 of the cover body 20 is fitted and connected with the first fitting part 70 of the tube body 10. At this time, the interference between the first sealing part 50 and the second sealing part 60 Under the joint action of the fitting and the fitting and connection of the first fitting part 70 and the second fitting part 80 , the inside of the tube body 10 and the outside of the tube body 10 cannot exchange gas, so that the biochemical test tube is in a sealed state.

Example 8

This embodiment is a combination of Embodiment 5 and Embodiment 6. A biochemical test tube includes a tube body 10 , a cover body 20 and a connecting body 30 , the tube body 10 is connected with the cover body 20 through the connecting body 30 , and the tube body 10 , the cover body 20 and the connecting body 30 are integrally injection-molded.

The structures and connection relationships of the first sealing member 50 and the first fitting member 70 are basically the same as those of the fourth embodiment.

The tube body 100 includes a ventilation member 40 provided on the outer wall of the cover body 20 , a second sealing member 60 provided on the outer wall of the cover body 20 , and a second fitting member 80 provided on the outer wall of the cover body 20 . Wherein, the ventilation member 40 is used to exchange gas between the inside and the outside of the tube body 10 through the ventilation member 40 when the tube body 10 is in a semi-closed state, such as vacuuming operation, to keep the inner and outer pressures of the tube body 10 consistent; the second sealing The part 60 is arranged above the ventilation part 40, for when the tube body 10 is in a semi-closed state, the first sealing part 50 is located below the second sealing part 60, and when the tube body 10 is in a completely closed state, the first sealing part 50 is located above the second sealing member 60; the second fitting member 80 is connected to the ventilation member 40 for fitting with the first fitting member 70 when the tube body 10 is in a completely closed state.

The use method of this embodiment is as follows: the cover body 20 seals the tube body 10 for the first time (semi-closed state), the second sealing member 60 of the cover body 20 is located above the first sealing member 50 of the tube body 10, the second sealing member 60 of the cover body 20 is located above the first sealing member 50 of the tube body 10, The fitting member 80 is located above the first fitting member 70 . Since the outer diameter of the first sealing member 50 is larger than the inner diameter of the second sealing member 60 , the first sealing member 50 cannot be blocked by the second sealing member 60 . There will be an interference fit with the outer wall of the cover body 20, and the inside of the tube body 10 can exchange gas with the outside of the tube body 10 through the ventilation part 40; In the secondary closed state (completely closed state or sealed state), the first sealing member 50 of the tube body 10 passes over the second sealing member 60 of the cover body 20 and then interferes with the outer wall of the cover body 20 located above the ventilation member 40, and the tube body 10 The first fitting member 70 is fitted and connected with the second fitting member 80 of the cover body 20. At this time, the interference fit between the first sealing member 50 and the second sealing member 60 and the first fitting member 70 and the Under the joint action of the fitting connection of the two fitting parts 80, the inside of the tube body 10 and the outside of the tube body 10 cannot exchange gas, so that the biochemical test tube is in a sealed state.

Example 9

This embodiment is an improved embodiment of the cover body 20 of the first embodiment to the eighth embodiment.

As shown in FIGS. 21 to 22 , the cover body 20 includes an opening 21 , a third sealing member 22 and a sealing elastic member 23 . The opening 21 is arranged through the upper and lower ends of the cover body 20 , the third sealing member 22 is arranged at one end of the opening 21 to seal the cover body 20 , and the sealing elastic member 23 is arranged on the upper end surface of the third sealing member 22 and The third sealing member 22 is covered.

The sealing elastic member 23 includes a scratch 24 , and the scratch 24 is provided on a side of the sealing elastic member 23 away from the third sealing member 22 . Specifically, the scratches 24 are provided on the upper end surface of the sealing elastic member 23 .

The scratches 24 are provided through the upper and lower ends of the sealing elastic member 23 .

In one of the embodiments, the scratch 24 is composed of at least three dividing seams, and the first ends of the plurality of dividing seams are connected to form a shape that diverges outward from a center point. If the number of separation slits is n (n is a natural number greater than or equal to 3), the included angle formed by two adjacent separation slits is 360°/n.

Generally, the preferred number of separation slits is 3 to 5, that is, the scratches 24 are in the shape of a triangular star, a cross, or a pentagram.

In order to facilitate the installation of the third sealing member 22 , the cover body 20 further includes a positioning member 25 . The positioning member 25 is disposed inside the opening 21 and is integrally formed with the opening 21 . The third sealing member 22 is attached to the upper end surface of the positioning member 25 , and the inner diameter of the positioning member 25 is smaller than the inner diameter of the opening 21 and the inner diameter of the third sealing member 22 .

In one of the embodiments, the positioning member 25 is a mounting boss.

In order to limit the position of the sealing elastic member 23 and prevent the sealing elastic member 23 from falling off, the cover body 20 further includes a limiting member 26. The limiting member 26 is disposed on the side of the sealing elastic member 23 away from the third sealing member 22, that is, the on the upper end surface of the sealing elastic member 23 . Wherein, the limiting member 26 is connected with the cover body 20 to limit the vertical displacement of the sealing elastic member 23 .

In one of the embodiments, the limiting member 26 is a limiting ring. Wherein, the scratch 24 has a circumscribed circle, and the inner diameter of the limiting member 26 is not less than the outer diameter of the circumscribed circle.

In one embodiment, the limiting member 26 is fitted and connected to the cover body 20 . Specifically, the cover body 20 includes a third fitting member 27 , and the third fitting member 27 is disposed on the inner wall of the opening 21 and located above the positioning member 25 . The limiting member 26 includes a fourth fitting member 28 provided on the outer wall of the limiting member 26 . Wherein, when the limiting member 26 is connected with the cover body 20, the third fitting member 27 is fitted and connected with the fourth fitting member 28, so as to improve the connection strength of the limiting member 26 and the cover body 20 and avoid the occurrence of limiting The case where the bit member 26 falls off.

In one embodiment, the third fitting part 27 is a fitting groove, and the fourth fitting part 28 is a fitting convex ring.

In one of the embodiments, the third sealing member 22 is a sealing film, such as an aluminum foil film.

In one of the embodiments, the sealing elastic member 23 is made of any one or a combination of several materials such as plastic, rubber, and silicone.

The use method of the present invention is as follows: the cover body 20 is set to close the tube body 10 (such as insert-type assembly, screw-type assembly, external-insertion assembly, etc.); the injection part (such as the needle) of the syringe carrying the solution is passed through the scratch 24 and pierce the third sealing member 22, extend into the interior of the tube body 10, and inject the solution into the interior of the tube body 10; after the injection is completed, remove the syringe, and the sealing elastic member 23 returns to its original state. The sealing member 22 is damaged, but the sealing elastic member 23 shields the damaged third sealing member 22, and makes the tube body 10 present a sealing state again.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the embodiments and protection scope of the present invention. Those skilled in the art should be aware of the equivalents made by using the description and illustrations of the present invention. The solutions obtained by substitutions and obvious changes shall all be included in the protection scope of the present invention.

Claims

A biochemical test tube, comprising a tube body and a cover, wherein the tube body comprises:

a ventilation part, the ventilation part is arranged on the inner wall of the nozzle of the pipe body;

The cover body includes:

a first sealing member, the first sealing member is disposed on the outer wall of the cover body;

Wherein, when the cover body seals the tube body for the first time, the first sealing member is in contact with the ventilation member for allowing the inside of the tube body and the outside of the tube body to pass through the ventilation part performs gas exchange;

When the cover body seals the tube body for the second time, the first sealing member is in interference fit with the inner wall of the tube body below the ventilation member, so as to make the biochemical test tube in a sealed state.
The biochemical test tube according to claim 1, wherein the tube body further comprises:

a first fitting part, the first fitting part is arranged on the inner wall of the nozzle of the pipe body, and is connected with the ventilation part;

The cover body also includes:

a second fitting part, the second fitting part is arranged on the outer wall of the cover body;

Wherein, when the cover body seals the tube body for the first time, the second fitting member does not contact the first fitting member, and the first sealing member and the first fitting member are not in contact with each other. fitting part fitting;

When the cover body seals the tube body for the second time, the second fitting member is fitted and connected to the first fitting member.
The biochemical test tube according to claim 1 or 2, wherein the tube body further comprises:

a second sealing member, the second sealing member is arranged on the inner wall of the nozzle of the pipe body, and is located below the ventilation member;

Wherein, when the cover body seals the tube body for the first time, the first sealing member is in contact with the second sealing member, and the first sealing member is located on the second sealing member above;

When the cover body seals the tube body for the second time, the first sealing member is located below the second sealing member, and the first sealing member passes through the inner wall of the tube body In an interference fit, the second sealing component is in an interference fit with the outer wall of the cover body.
The biochemical test tube according to claim 1, further comprising:

A connecting body, the connecting body is respectively connected with the pipe body and the cover body, and the pipe body, the cover body and the connecting body are integrally injection-molded.
The biochemical test tube according to claim 1, wherein the ventilation component is a plurality of ventilation grooves, and a plurality of the ventilation grooves are distributed in an annular array on the inner wall of the nozzle of the tube body.
The biochemical test tube according to claim 1, wherein the cover body comprises:

an opening, the opening is arranged through the cover body;

a third sealing member, the third sealing member is disposed at one end of the opening to seal the opening;

a sealing elastic member, the sealing elastic member is arranged on one side of the third sealing member;

The sealing elastic member includes a scratch, and the scratch is arranged on a side of the sealing elastic member away from the third sealing member;

Wherein, when an external force is applied to the sealing elastic member, the sealing elastic member protrudes toward the third sealing member at the position of the scratch; when the external force applied to the sealing elastic member disappears Next, the sealing elastic member is reset.
The biochemical test tube according to claim 6, wherein the cover further comprises:

a positioning member, the positioning member is provided inside the opening, the third sealing member is attached to the positioning member, and the inner diameter of the positioning member is smaller than the inner diameter of the opening and smaller than the third sealing member the inner diameter.
The biochemical test tube according to claim 6, wherein the cover further comprises:

A limiting member, the limiting member is disposed on the side of the sealing elastic member away from the third sealing member.
The biochemical test tube according to claim 8, wherein, in some embodiments, the cover further comprises:

a third fitting part, the third fitting part is arranged on the inner wall of the opening;

The limiting components include:

A fourth fitting member is provided on the outer wall of the stopper member, and the fourth fitting member is fitted and connected to the third fitting member.
A biochemical test tube, comprising a tube body and a cover, wherein the tube body comprises:

a first sealing member, the first sealing member is arranged on the inner wall of the nozzle of the pipe body;

The cover body includes:

a ventilation part, the ventilation part is arranged on the outer wall of the cover body;

Wherein, when the cover body seals the tube body for the first time, the first sealing member is fitted with the ventilation member, so that the inside of the tube body and the inner part of the tube body are fitted with each other. External gas exchange;

When the cover body seals the tube body for the second time, the first sealing member is in interference fit with the inner wall of the tube body below the ventilation member, so as to make the biochemical test tube in a sealed state.
The biochemical test tube according to claim 10, wherein the tube body further comprises:

a first fitting part, the first fitting part is arranged on the inner wall of the nozzle of the pipe body;

The cover body also includes:

a second fitting part, the second fitting part is arranged on the outer wall of the cover body and is connected with the ventilation part;

Wherein, when the cover body seals the tube body for the first time, the second fitting member and the first fitting member are not in contact, and the first sealing member and the second fitting member are not in contact with each other. fitting part fitting;

When the cover body seals the tube body for the second time, the second fitting member is fitted and connected to the first fitting member.
The biochemical test tube according to claim 10, wherein the cover further comprises:

a second sealing member, the second sealing member is arranged on the outer wall of the cover body and is located above the ventilation member;

Wherein, when the cover body seals the tube body for the first time, the first sealing member contacts the second sealing member, and the first sealing member is located on the side of the second sealing member. below;

When the cover body seals the tube body for the second time, the first sealing member is located above the second sealing member, and the first sealing member passes through the outer wall of the cover body. In an interference fit, the second sealing component is in an interference fit with the inner wall of the nozzle of the pipe body.
The biochemical test tube according to claim 10, further comprising:

A connecting body is respectively connected with the pipe body and the cover body, and the pipe body, the cover body and the connecting body are integrally injection-molded.
The biochemical test tube according to claim 10, wherein the ventilation component is a plurality of ventilation grooves, and the ventilation grooves are distributed in an annular array on the outer wall of the cover body.
The biochemical test tube according to claim 10, wherein the cover body comprises:

an opening, the opening is arranged through the cover body;

a third sealing member, the third sealing member is disposed at one end of the opening to seal the opening;

a sealing elastic member, the sealing elastic member is arranged on one side of the third sealing member;

The sealing elastic member includes a scratch, and the scratch is provided on a side of the sealing elastic member away from the third sealing member;

Wherein, when an external force is applied to the sealing elastic member, the sealing elastic member protrudes toward the third sealing member at the position of the scratch; when the external force applied to the sealing elastic member disappears Next, the sealing elastic member is reset.
The biochemical test tube according to claim 15, wherein the cover further comprises:

a positioning member, the positioning member is provided inside the opening, the third sealing member is attached to the positioning member, and the inner diameter of the positioning member is smaller than the inner diameter of the opening and smaller than the third sealing member the inner diameter.
The biochemical test tube according to claim 15, wherein the cover further comprises:

A limiting member, the limiting member is disposed on the side of the sealing elastic member away from the third sealing member.
The biochemical test tube according to claim 17, wherein, in some embodiments, the cover further comprises:

a third fitting member, the third fitting member is disposed on the inner wall of the opening;

The limiting components include:

A fourth fitting member, the fourth fitting member is provided on the outer wall of the stopper member, and the fourth fitting member is fitted and connected to the third fitting member.