CN217490937U

CN217490937U - Extraction tube

Info

Publication number: CN217490937U
Application number: CN202221584445.5U
Authority: CN
Inventors: 吉斌; 文志勇; 李才烈; 李孟达; 贾勇
Original assignee: Chongqing Weikebei Technology Co ltd
Current assignee: Chongqing Weikebei Technology Co ltd
Priority date: 2022-06-23
Filing date: 2022-06-23
Publication date: 2022-09-27
Anticipated expiration: 2032-06-23

Abstract

The utility model discloses an extraction tube, which comprises a tube body, wherein the tube body comprises a bottle body and a tube plug, a bottle cavity is arranged in the bottle body, a bottle opening is arranged on the bottle cavity, and a plug column which is used for being plugged into the bottle cavity through the bottle opening is arranged on the tube plug; the bottle mouth is provided with an empty avoiding groove, and the inner diameter of the empty avoiding groove is larger than that of the bottle mouth. The utility model discloses an extraction tube is through setting up the clearance groove in bottleneck department to make the internal diameter of clearance groove be greater than the internal diameter of bottleneck, so, form the step between bottleneck and clearance groove, this step region can hold an amount of colloid, thereby when avoiding sealing the membrane to the bottleneck, seal the membrane because of the transition and collapse the bottleneck position and cause the many gluey problems of oral area, make the stopcock can fill in the bottle intracavity through the bottleneck smoothly.

Description

Extraction tube

Technical Field

The utility model belongs to the technical field of medical instrument, specificly be an extraction tube.

Background

The extraction tube is a tool integrating sampling and sample adding, and is mainly used for in vitro diagnosis projects. Chinese patent publication No. CN216224457U discloses an extraction tube. This draw tube includes pipe shaft, tube cap and dripper all connect on the pipe shaft through an anticreep muscle, the tube cap is established the mouth end position at the pipe shaft including the lid with the range of motion of dripper under the anticreep muscle tractive, the mouth end of pipe shaft is equipped with annular catching groove, the tube cap inboard is provided with detains with annular catching groove assorted annular, annular is detained and can is detained annular catching groove. This extraction tube is equipped with annular catching groove and is realized sealedly with the mode that sets up annular knot in the tube cap inboard through the mouth end at the pipe shaft, though has certain sealed effect, still has following not enough:

1) the pipe body can be extruded and deformed, so that the pipe orifice of the pipe body is easily deformed during film sealing, excessive colloid exists in the annular buckling groove, and the pipe cover is difficult to cover on the pipe body through the annular buckling groove;

2) because the pipe shaft, the pipe cover and the like of the extracting pipe can be extruded and deformed, when the extracting pipe is extruded, the annular buckle groove and the annular buckle can be broken, and the leakage risk exists.

Disclosure of Invention

In view of this, the present invention provides an extraction tube, which can avoid the problem that the plug is difficult to be plugged due to excessive colloid.

In order to achieve the above purpose, the utility model provides a following technical scheme:

an extraction tube comprises a tube body, wherein the tube body comprises a bottle body and a tube plug, a bottle cavity is arranged in the bottle body, a bottle opening is arranged on the bottle cavity, and a plug column which is used for being plugged into the bottle cavity through the bottle opening is arranged on the tube plug;

the bottle mouth is provided with an empty avoiding groove, and the inner diameter of the empty avoiding groove is larger than that of the bottle mouth.

Further, the depth of the clearance groove is 0.1mm-1 mm.

Further, the difference between the inner diameter of the clearance groove and the inner diameter of the bottle mouth is 1mm-4 mm.

Further, the bottleneck is provided with a flaring section, and the inner diameter of the flaring section is gradually reduced along the direction of the bottleneck pointing to the cavity bottom of the bottle cavity.

Further, a connecting belt is arranged between the bottle body and the pipe plug, and the bottle body and the pipe plug are connected into a whole through the connecting belt.

The plug is provided with a sample dripping head, a sample dripping hole is formed in the sample dripping head, and a communicating hole communicated with the sample dripping hole is formed in the plug column; the pipe cap is internally provided with a cover groove with an opening at one end and used for being matched with the sample dripping head, and the bottom of the cover groove is provided with a sealing column used for being matched with the sample dripping hole in a sealing way.

Further, the sealing column is in interference fit with the sample dripping hole; the cover groove is in clearance fit with the sample dripping head.

Further, the outer diameter of the sealing column gradually increases along the direction from the opening of the cover groove to the groove bottom.

Further, the sample dripping hole comprises a hole inner end communicated with the pipe body and a hole outer end communicated with the external environment, and the inner diameter of the sample dripping hole is gradually reduced along the direction from the hole outer end to the hole inner end; or one end of the sample dropping hole close to the outer end of the hole is provided with a reducing section, and the inner diameter of the reducing section is gradually reduced along the direction of the outer end of the hole pointing to the inner end of the hole.

Further, the sealing column is a cone, the sample dripping hole or the reducing section is a conical hole, and the cone angle alpha of the sealing column is larger than the cone angle beta of the sample dripping hole or the reducing section; the cone angle alpha of the sealing column is as follows: alpha is more than or equal to 5 degrees and less than or equal to 20 degrees, and the taper angle beta of the conical hole satisfies the following conditions: the angle of alpha-beta is more than or equal to 1 degree and less than or equal to 5 degrees.

The beneficial effects of the utility model reside in that:

the utility model discloses an extraction tube is through setting up the clearance groove in bottleneck department to make the internal diameter of clearance groove be greater than the internal diameter of bottleneck, so, form the step between bottleneck and clearance groove, this step region can hold an amount of colloid, thereby when avoiding sealing the membrane to the bottleneck, seal the membrane because of the transition and collapse the bottleneck position and cause the many gluey problems of oral area, make the stopcock can fill in the bottle intracavity through the bottleneck smoothly.

In addition, through setting up the pipe cap, utilize the cover groove can cover on the dropping sample head, utilize the sealed post that sets up at the cover groove tank bottom to closely cooperate with the hole of dropping sample simultaneously, can improve sealed effect, prevent the weeping.

The sealing performance can be improved by the interference fit between the sealing column and the sample dropping hole; meanwhile, the cover groove is in clearance fit with the sample dropping head, so that the cover can be conveniently covered on the sample dropping head or taken down from the sample dropping head.

Drawings

In order to make the purpose, technical scheme and beneficial effect of the utility model clearer, the utility model provides a following figure explains:

FIG. 1 is a schematic structural view of an embodiment of an extraction tube of the present invention, specifically a state diagram when a plug is plugged into a bottle body but a cap is not covered;

FIG. 2 is a full sectional view of the extraction tube of this embodiment with the plug inserted into the bottle mouth and the cap attached;

FIG. 3 is detail A of FIG. 2;

FIG. 4 is detail B of FIG. 3;

fig. 5 is a schematic structural view of the bottle body and the plug.

Description of reference numerals:

11-a pipe cap; 12-a sample dropper; 13-a sample dropping hole; 13 a-the outer end of the bore; 13 b-the inner end of the bore; 14-a bottle body; 15-pipe plug; 16-a connecting band; 17-cover groove; 18-a sealed column; 19-bottle cavity; 20-bottle mouth; 21-plug column; 22-a communication hole; 23-avoiding empty slots; 24-flared section.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not limited to the present invention.

As shown in FIG. 1, the extraction tube for preventing liquid leakage of this embodiment comprises a tube body and a cap 11. The tube body is provided with a sample dripping head 12, and a sample dripping hole 13 is arranged in the sample dripping head 12. Specifically, the tube of the present embodiment includes a bottle body 14 andthe tube plug 15 and the sample dripping head 12 are arranged on the tube plug 15, a connecting belt 16 is arranged between the bottle body 14 and the tube plug 15, and the connecting belt 16 connects the bottle body 14 and the tube plug 15 into a whole. As shown in fig. 2-4, a cover groove 17 with an open end and used for cooperating with the sample dripping head 12 is provided in the cap 11, and a sealing column 18 for hermetically cooperating with the sample dripping hole 13 is provided at the bottom of the cover groove 17, so that the cover groove 17 covers the sample dripping head 12, and the sealing column 18 is inserted into the sample dripping hole 13, and the sealing effect can be improved, the sealing requirement can be met, and liquid leakage can be prevented by using the hermetically cooperating relation between the sealing column 18 and the sample dripping hole 13. Specifically, in this embodiment, the cover slot 17 is in clearance fit with the sample dripping head 12, and the fit clearance is L ₁ To reduce the resistance of the cap 11 to being covered on or removed from the drip sample 12, and to facilitate the operation.

Specifically, in order to meet the sealing requirement between the sealing column 18 and the sample dropping hole 13, the embodiment adopts interference fit between the sealing column 18 and the sample dropping hole 13, and the interference fit amount is L ₂ As shown in fig. 3-4. In order to facilitate the insertion of the sealing column 18 into the sample dropping hole 13 or the extraction of the sealing column 18 from the sample dropping hole 13, the outer diameter of the sealing column 18 is gradually increased along the direction pointing to the bottom of the groove of the opening of the cover groove 17 in the present embodiment, so that the head of the sealing column 18 away from the cover groove 17 is in clearance fit with the sample dropping hole 13, and thus the sealing column can be conveniently inserted into the sample dropping hole 13, and along with the increase of the depth of the sealing column 18 inserted into the sample dropping hole 13, the outer diameter of the sealing column 18 is gradually increased, and finally, the effect of interference fit is achieved. Specifically, as shown in fig. 3 to 4, in the present embodiment, in order to further facilitate insertion and extraction of the sealing column 18 into and from the dripping hole 13, the dripping hole 13 is also provided in a shape in which the inner diameter dimension gradually changes along the axial direction thereof. Specifically, the sample dropping hole 13 includes an inner hole end 13a (shown in fig. 5) communicating with the tube body and an outer hole end 13b (shown in fig. 5) communicating with the external environment, the inner diameter of the sample dropping hole 13 gradually decreases along the direction from the outer hole end 13b to the inner hole end 13a, and the sealing column 18 is inserted into the sample dropping hole 13 from the outer hole end 13b of the sample dropping hole 13. Of course, in other embodiments, a tapered section may be provided at the end of the sample dropping hole 13 near the outer end 13a, and the inner diameter of the tapered section gradually decreases from the outer end 13b to the inner end 13aAnd reducing, namely, utilizing the reducing section to be matched with the sealing column 18, wherein the hole diameter of the sample dropping hole 13 at other positions except the reducing section can be kept unchanged. Meanwhile, in order to satisfy the requirement of the close fit, the outer diameter of the sealing column 18 at a certain position is required to be larger than the maximum value of the inner diameter of the dripping hole 13. Specifically, in the present embodiment, the sealing column 18 is a cone, the sample dropping hole 13 or the diameter-variable section is a cone hole, and the cone angle α of the sealing column 18 is greater than the cone angle β of the sample dropping hole 13 or the diameter-variable section, so that the outer diameter of the head of the sealing column 18 is smaller than the maximum inner diameter of the sample dropping hole 13 or the diameter-variable section, but after the sealing column 18 is inserted into the sample dropping hole 13 or the diameter-variable section to a certain depth, the outer diameter of the sealing column 18 gradually increases and is greater than the maximum inner diameter of the sample dropping hole 13 or the diameter-variable section, thereby achieving the interference fit. Specifically, in the present embodiment, the preferable range of the taper angle α of the seal post 18 is: alpha is more than or equal to 5 degrees and less than or equal to 20 degrees, and the cone angle beta of the conical hole meets the following requirements: the angle alpha-beta is more than or equal to 1 degree and less than or equal to 5 degrees, namely the cone angle beta of the dripping hole 13 or the diameter-variable section is 1 to 5 degrees smaller than the cone angle alpha of the sealing column 18.

In this embodiment, the tube body is provided separately as the vial body 14 and the stopper 15, and the connection band 16 is provided between the vial body 14 and the stopper 15 to connect the vial body 14 and the stopper 15 integrally. As shown in fig. 5, a bottle cavity 19 is formed in the bottle body 14, and a bottle opening 20 is formed on the bottle cavity 19. To facilitate the engagement between the bottle body 14 and the plug 15, the plug 15 of the present embodiment is provided with a plug 21 for being inserted into the bottle cavity 19 through the bottle opening 20. Meanwhile, in order to allow the bottle chamber 19 to communicate with the dripping hole 13, a communicating hole 22 communicating with the dripping hole 13 is provided in the plug 21, so that when the plug 21 is inserted into the bottle opening 20, the bottle chamber 19 communicates with the dripping hole 13 through the communicating hole 22, that is, the liquid in the bottle chamber 19 can drip through the dripping hole 13.

As shown in fig. 5, the opening 20 of the present embodiment is provided with a clearance groove 23, and the inner diameter of the clearance groove 23 is larger than the inner diameter of the opening 20, so that an annular step is formed between the inner wall of the clearance groove 23 and the inner wall of the opening 20, the annular step can contain a certain amount of colloid, and the strength of the opening 20 can be increased, so as to avoid the problem that the opening 20 is squeezed and deformed when the film is sealed, i.e. the problem that the opening is too much glue due to the fact that the opening part is sealed and collapsed by the transitional sealing film when the film is sealed on the opening 20 is avoided, so that the plug 15 can be smoothly plugged into the cavity 19 through the opening 20. Specifically, the depth of the clearance groove 23 in this embodiment is 0.1mm to 1mm, and the difference between the inner diameter of the clearance groove 23 and the inner diameter of the bottle mouth 20 is 1mm to 4mm, that is, the radial width of the annular step is 0.5mm to 2 mm. In addition, in order to facilitate the plug 21 to be able to cooperate with the bottle mouth 20, in this embodiment, a flared section 24 is further provided at the bottle mouth 20, and an inner diameter of the flared section 24 is gradually reduced along a direction from the bottle mouth 20 to the bottom of the bottle cavity 19, so as to achieve a technical purpose of guiding the plug 21 into the bottle mouth 20. Specifically, the flared section 24 is disposed at one end of the clearance groove 23 facing the cavity bottom of the bottle cavity 19, and a difference between an inner diameter of the clearance groove 23 and a maximum inner diameter of the flared section 24 is 1mm to 4mm, that is, in this embodiment, the flared section 24 is regarded as a part of the bottle mouth 20.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims

1. An extraction tube, characterized in that: the bottle comprises a tube body, wherein the tube body comprises a bottle body and a tube plug, a bottle cavity is arranged in the bottle body, a bottle opening is arranged on the bottle cavity, and a plug column which is used for being plugged into the bottle cavity through the bottle opening is arranged on the tube plug;

the bottle mouth is provided with a clearance groove, and the inner diameter of the clearance groove is larger than that of the bottle mouth.

2. The extraction tube of claim 1, wherein: the depth of the clearance groove is 0.1mm-1 mm.

3. The extraction tube of claim 2, wherein: the difference between the inner diameter of the clearance groove and the inner diameter of the bottle mouth is 1mm-4 mm.

4. The extraction tube of claim 1, wherein: the bottle mouth is provided with an opening expanding section, and the inner diameter of the opening expanding section is gradually reduced along the direction of the bottle mouth pointing to the bottom of the bottle cavity.

5. The extraction tube of claim 1, wherein: and a connecting belt is arranged between the bottle body and the pipe plug and connects the bottle body and the pipe plug into a whole.

6. The extraction tube of any one of claims 1-5, wherein: the plug is provided with a sample dripping head, a sample dripping hole is formed in the sample dripping head, and a communicating hole communicated with the sample dripping hole is formed in the plug column; the pipe cap is internally provided with a cover groove with an opening at one end and used for being matched with the sample dripping head, and the bottom of the cover groove is provided with a sealing column used for being matched with the sample dripping hole in a sealing mode.

7. The extraction tube of claim 6, wherein: the sealing column is in interference fit with the sample dripping hole; the cover groove is in clearance fit with the sample dripping head.

8. The extraction tube of claim 6, wherein: the outer diameter of the sealing column is gradually increased along the direction from the opening of the cover groove to the groove bottom.

9. The extraction tube of claim 8, wherein: the sample dripping hole comprises a hole inner end communicated with the pipe body and a hole outer end communicated with the external environment, and the inner diameter of the sample dripping hole is gradually reduced along the direction of the hole outer end to the hole inner end; or one end of the sample dropping hole close to the outer end of the hole is provided with a reducing section, and the inner diameter of the reducing section is gradually reduced along the direction of the outer end of the hole pointing to the inner end of the hole.

10. The extraction tube of claim 9, wherein: the sealing column is a cone, the sample dripping hole or the reducing section is a conical hole, and the cone angle alpha of the sealing column is larger than the cone angle beta of the sample dripping hole or the reducing section; the cone angle alpha of the sealing column is as follows: alpha is more than or equal to 5 degrees and less than or equal to 20 degrees, and the cone angle beta of the conical hole meets the following requirements: the alpha-beta is more than or equal to 1 degree and less than or equal to 5 degrees.