Disposable drainage fluid testing bottle

By designing disposable test bottles with built-in collection tubes, the problem of not being able to guarantee a sterile environment and airtightness in the collection of drainage fluid in existing technologies has been solved, achieving the effect of automatic collection and convenient testing.

CN224462027UActive Publication Date: 2026-07-07PEKING UNIVERSITY THIRD HOSPITAL (THE THIRD CLINICAL MEDICAL SCHOOL OF PEKING UNIVERSITY)

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
PEKING UNIVERSITY THIRD HOSPITAL (THE THIRD CLINICAL MEDICAL SCHOOL OF PEKING UNIVERSITY)
Filing Date
2025-03-18
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing methods for collecting drainage fluid cannot guarantee a sterile environment and the sterility and tightness of the drainage tubing. Furthermore, medical staff need to manually keep the collection tube stable, which can easily lead to fluid splashing and infection risks.

Method used

A disposable test bottle with a built-in collection tube has been designed, comprising a bottle body, a cap, and a collection tube. The cap has a receiving cavity and a through hole. The collection tube is inserted through the through hole. The cap can be installed movably. During the collection process, the collection tube is automatically sealed after being connected to the drainage tube to prevent liquid splashing. After the collection is completed, it can be directly tested.

Benefits of technology

It enables automated collection of drainage fluid in a sterile environment, reducing operational steps, preventing liquid splashing and infection, and improving the safety and convenience of collection.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224462027U_ABST
    Figure CN224462027U_ABST
Patent Text Reader

Abstract

The utility model provides a disposable drainage liquid test bottle, including the bottle body of containing liquid, and the bottle lid of closing bottle body opening, the bottle lid includes the cover body with containing cavity and two collection tubes, is provided with the snap ring sealed with bottle body opening end in the bottom of cover body, is provided with two through -holes in the containing cavity bottom of cover body, two collection tubes place in the cover body and are respectively through one end plug -in in two through -holes, the top movable mounting of cover body has the closure cap. The utility model discloses through the closed containing cavity of bottle lid, can protect the collection tube of containing, prevent its in the transportation process from being contaminated, and will the component used integrate together, also greatly reduce the action of operation. The bottle lid after collection completion also can not influence the detection of drainage liquid in bottle body in later period, can directly take down the bottle lid in the specific detection.
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Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a disposable test bottle with a built-in collection tube that can easily extract drainage fluid. Background Technology

[0002] According to the latest data from the National Cancer Center, lung cancer remains the leading cause of malignant tumor incidence in my country. Video-assisted thoracoscopic surgery (VATS) is currently the preferred method for treating early-stage lung cancer. After undergoing this surgery, one or more drainage tubes are placed at the surgical incision site. One end of the tube is placed in the patient's pleural cavity, and the other end is connected to a closed pleural drainage bottle. Sterile saline solution is poured into the bottle to the mark to maintain a water seal. The main function of the drainage tube is to drain gas or fluid from the pleural cavity, thereby reducing lung pressure and discomfort. It also allows doctors to assess the patient's condition based on the nature of the drainage fluid. Therefore, it is necessary to collect the drainage fluid frequently for observation of its color, nature, and amount.

[0003] The commonly used method for collecting drainage fluid is as follows: use two hemostatic forceps 100mm apart to clamp the silicone drainage tube near the wound end in opposite directions, then disconnect the drainage tube between the two hemostatic forceps, and let a small amount of drainage fluid remaining in the silicone drainage tube flow into the blood sample collection tube along the end of the tube. Cover the collection tube, affix a label, and send it for testing.

[0004] While this method can achieve its purpose, it cannot guarantee the sterile environment of the drainage fluid and the sterile sealing of the drainage tube. In addition, medical staff need to manually keep the blood sample collection tube stable at all times, which can easily lead to problems such as liquid splashing and exposure of medical staff. Utility Model Content

[0005] The purpose of this invention is to provide a disposable test bottle with a built-in collection tube that allows for easy extraction of drainage fluid.

[0006] Specifically, this utility model provides a disposable drainage fluid test bottle, including a bottle body for holding liquid and a bottle cap for sealing the opening of the bottle body. The bottle cap includes a cap body with a receiving cavity and two collection tubes. A retaining ring is provided at the bottom of the cap body to seal with the opening end of the bottle body. Two through holes are provided at the bottom of the receiving cavity of the cap body. The two collection tubes are placed in the cap body and are respectively inserted into the two through holes through one end. A sealing cap is movably installed on the top of the cap body.

[0007] In one embodiment of this utility model, a closing clamp is clamped on each of the two collection tubes.

[0008] In one embodiment of this utility model, a connecting sleeve is provided at the end of each of the two collection tubes that is not inserted into the through hole.

[0009] In one embodiment of this utility model, the two collection tubes are flexible tubes with a length ≥ 80 mm; the capacity of the bottle is ≥ 15 ml.

[0010] In one embodiment of this utility model, the sealing cover is provided with a retaining ring that engages with the cover body on its side circumference.

[0011] In one embodiment of this utility model, two top posts are provided on the side of the sealing cover facing the body of the cover, and the positions of the two top posts correspond to the positions of the two through holes respectively.

[0012] In one embodiment of this utility model, the cover body and the sealing cover are made of flexible material, and the sealing cover is connected together by a connecting strip integral with the cover body. A radially protruding pushing block is provided at the end of the sealing cover opposite to the connecting strip.

[0013] In one embodiment of this utility model, the sealing cover is inserted into a pin hole on the side of the cover body via a pin, and the installed sealing cover can rotate radially according to the pin.

[0014] In one embodiment of this utility model, a scale for displaying the internal liquid volume is provided on the bottle body.

[0015] In one embodiment of this utility model, the bottle body consists of two sleeves that are inserted into each other and a pull rod. The pull rod includes a push rod and a sealing section installed at the end of the push rod. The diameter of the sealing section is the same as the inner diameter of the sleeve. The pull rod is inserted into the sleeve through the sealing section and its position is opposite to that of the bottle cap.

[0016] This invention protects the collection tube by using a sealed cavity in the bottle cap, preventing contamination during transportation. The integrated components significantly reduce operational steps, eliminating the need for medical personnel to hold the test bottle during collection; only the seal between the collection tube and drainage tube needs to be maintained. The bottle cap remains in place after collection and does not interfere with subsequent testing of the drainage fluid; it can be simply removed for testing. Furthermore, the independent bottle cap structure can be installed on bottles in various locations to meet different needs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the test bottle of this utility model;

[0018] Figure 2 This is a schematic diagram of a structure in one embodiment where a top post is provided on the closed cover;

[0019] Figure 3 This is a schematic diagram of a structure in one embodiment where a partition is provided on the closed cover;

[0020] Figure 4 This is a schematic diagram of a bottle body using a suction structure in one embodiment. Detailed Implementation

[0021] The present solution will be described in detail below with reference to specific embodiments and accompanying drawings.

[0022] In the following embodiments, "bottom" refers to the bottom of the image when facing the screen, and "top" refers to the top of the image when facing the screen.

[0023] like Figure 1 As shown, in one embodiment of this utility model, a disposable drainage fluid test bottle is disclosed, including a bottle body 1 for holding liquid and a bottle cap 2 for sealing the bottle body opening. The bottle cap 2 in this solution includes a cap body 21 with a receiving cavity and two collection tubes 3. A retaining ring 22 is provided at the bottom of the cap body 21 to seal with the opening end of the bottle body 1. Two through holes 23 are provided at the bottom of the receiving cavity of the cap body 21, and the through holes 23 are opposite to the opening end of the bottle body. The two collection tubes 3 are placed in the cap body 21 and are respectively inserted into the two through holes 23 through one end. A sealing cap 24 is movably installed on the top of the cap body 21.

[0024] In the unused state, the bottle cap 2 is installed on the open end of the bottle body 1 via a retaining ring 22. The retaining ring 22 can be a threaded structure that mates with the open end of the bottle body 1, or a barrel-shaped structure that is directly sealed within the bottle body opening via friction. The two collection tubes 3 are hereinafter referred to as the first collection tube 31 and the second collection tube 32. One end of each collection tube 31 and the second collection tube 32 is inserted through the through hole 23 in the cap body 21 towards the bottle opening. The insertion depth is sufficient not to affect the subsequent liquid filling of the bottle body 1. The uninserted portions of the first collection tube 31 and the second collection tube 31 are accommodated within the cap body 21, and the opening of the cap is then sealed by a sealing cap.

[0025] When using this method, first separate the patient's drainage tube by a predetermined distance using two hemostatic forceps, then disconnect the separated drainage tube in the middle, push open the sealing cap 24, connect the first collection tube 31 inside the cap 21 to one end of the disconnected drainage tube, and connect the second collection tube 32 to the other end of the disconnected drainage tube. Open the hemostatic forceps on the drainage tube closest to the patient, allowing the drainage fluid to enter the bottle 1 along the first collection tube 31. Once the predetermined amount is reached, the drainage tube can be closed again using the hemostatic forceps.

[0026] During the drainage process, if the drainage fluid in bottle 1 exceeds the predetermined amount, the hemostat on the drainage tube connected to the second collection tube 32 can be opened to drain the excess drainage fluid in bottle 1 into the patient's drainage bottle through the second collection tube 32. After the expected amount is reached, the hemostat can be closed.

[0027] After drainage is completed, the first collection tube 31 and the second collection tube 32 are returned to the cap 21, and the sealing cap 24 is closed, completing the collection process. At this point, the first and second collection tubes 31 and 32, due to their flexibility, will automatically bend inside the cap 24 to form a seal, preventing backflow of the drainage fluid in the bottle 21. In this method, the drainage fluid remains within the collection tubes 31 throughout the collection process and does not come into contact with the outside environment, thus preventing splashing, reducing the risk of infection from external pathogens, and also improving the protection of medical personnel.

[0028] The sealed cavity of the cap 21 protects the collection tube 3 from contamination during transportation. Integrating all components significantly reduces operational steps. During collection, medical personnel do not need to hold the test bottle; only the connection between the collection tube 3 and the drainage tube needs to be sealed. The cap 2, once removed, does not affect subsequent testing of the drainage fluid within the bottle; it can be simply removed from the bottle body 1 for testing. The independent cap 2 structure in this design can also be installed on bottles in various locations to meet different needs.

[0029] In this solution, the bottle body 1, bottle cap 2, and collection tube 3 are made of flexible materials, such as polypropylene resin, silicone, polyethylene terephthalate (PET), etc.

[0030] like Figure 2 As shown, in one embodiment of this utility model, to prevent leakage of the collection tube 3 after collection, two top posts 25 are provided on the side of the sealing cap 24 facing inwards from the cap body 21. The positions of the two top posts 25 correspond to the positions of the two through holes 23, respectively. When the collection tube 3 is placed into the receiving cavity inside the cap body 21, the closing of the sealing cap 24 causes the two top posts 25 to press against the collection tube 3 located in the two through holes 23, thereby forming a compression seal on the collection tube 3 and ensuring that the collection tube 3 does not experience backflow of drainage fluid. Figure 3 As shown, in other embodiments, the two top posts 25 can also be configured as partitions 26, that is, a plate extending in the direction of the two through holes 23. After the cover 24 is closed, the front end of the partition 24 will press against the collection tube 3 at the two through holes 23, thus achieving the same sealing effect.

[0031] Furthermore, to prevent the drainage fluid from splashing during the collection process, a closing clamp 33 is clamped onto each of the two collection tubes 3. The closing clamp 33 can be used in conjunction with hemostatic forceps to clamp the drainage tubes. For example, after drainage is completed, the collection tubes 3 can be clamped with the closing clamp 33 to prevent the fluid inside the collection tubes from flowing out during the process of retracting them into the cap 21.

[0032] To facilitate the connection between the collection tube 3 and the drainage tube, a connecting sleeve 34 is provided at the end of each of the two collection tubes 3 before it is inserted into the through hole 23. The inner diameter of the connecting sleeve 34 is less than or equal to the outer diameter of the drainage tube. When the collection tube 3 is connected to the drainage tube, the connecting sleeve 34 can be directly put on the end of the drainage tube. This structure can realize the quick insertion and connection of the collection tube 3 and the drainage tube.

[0033] To facilitate viewing the volume of drainage fluid inside bottle 1, a scale 11 is provided on bottle 1 to display the internal liquid volume.

[0034] In one embodiment of this utility model, a retaining ring 26 is provided on the side circumference of the sealing cover 24 facing the cover body 21, which is inserted into the cover body. When the sealing cover 24 is fastened to the cover body 21, the retaining ring 26 will be inserted into the receiving cavity of the cover body 21, thereby making the sealing cover 24 more stably seal the opening end of the cover body 21.

[0035] To prevent the sealing cap 24 from falling off, it is connected to the cap body 21 by a connecting strap 35. A radially protruding push block 27 is also provided at the opposite end of the sealing cap 24 to the connecting strap 35. In this design, both the cap body 21 and the sealing cap 24 are made of a flexible material such as plastic, allowing the connecting strap 35 to be integrated with both. After the sealing cap 24 is opened, it will be hooked onto the cap body 21 via the connecting strap 35, preventing it from falling off. The push block 27 allows medical personnel to easily and quickly open the sealing cap 24 manually.

[0036] In another embodiment of the present invention, the sealing cover 24 can be inserted into the pin hole on the side of the cover body 21 by means of a pin (not shown in the figure). This structure can open the opening of the cover body 21 by radially pushing the sealing cover 24, with the pin serving as the fulcrum for the radial rotation of the sealing cover 24.

[0037] In the aforementioned embodiments, the specific collection tube is a flexible tube with a length ≥ 80 mm; the bottle capacity is ≥ 15 ml. For example, in this solution, the collection tube length is 100 mm, and the bottle capacity is 20 ml.

[0038] like Figure 4 As shown, in one embodiment of this utility model, the bottle body 1 is composed of two sleeves 12 that are inserted into each other and a pull rod 13. The end of the pull rod 13 is provided with a sealing section 131 and a push rod 132. The diameter of the sealing section 131 is the same as the inner diameter of the sleeve 12. The pull rod 13 is inserted into the sleeve 12 through the sealing section 131 and its position is opposite to that of the bottle cap 2.

[0039] The structure of this solution is similar to that of a conventional syringe. By using the push rod 132 to pull the sealing section 131, the air inside the sleeve 12 can be extracted, thereby accelerating the outflow speed of the drainage fluid in the drainage tube.

[0040] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A disposable drainage fluid test bottle, comprising a bottle body for holding liquid and a cap for sealing the opening of the bottle body, characterized in that, The bottle cap includes a cap body with a receiving cavity and two collection tubes. A retaining ring is provided at the bottom of the cap body to seal with the opening end of the bottle body. Two through holes are provided at the bottom of the receiving cavity of the cap body. The two collection tubes are placed in the cap body and are inserted into the two through holes through one end of each tube. A sealing cap is movably installed on the top of the cap body.

2. The disposable drainage fluid test bottle according to claim 1, characterized in that, A closing clamp is held on each of the two collection tubes.

3. The disposable drainage fluid test bottle according to claim 1, characterized in that, Each of the two acquisition tubes has a connecting sleeve at the end that is not inserted into the through hole.

4. The disposable drainage fluid test bottle according to claim 1, characterized in that, The two collection tubes are flexible tubes with a length ≥ 80 mm; the bottle has a capacity ≥ 15 ml.

5. The disposable drainage fluid test bottle according to claim 1, characterized in that, The sealing cap has a retaining ring that engages with the cap body on its side circumference.

6. The disposable drainage fluid test bottle according to claim 1, characterized in that, Two top posts are provided on the side of the closed cover facing the inside of the cover body, and the positions of the two top posts correspond to the positions of the two through holes respectively.

7. The disposable drainage fluid test bottle according to claim 1, characterized in that, The cover and the sealing cover are made of flexible material, and the sealing cover is connected together by a connecting strip integral with the cover. A radially protruding push block is provided at the end of the sealing cover opposite to the connecting strip.

8. The disposable drainage fluid test bottle according to claim 1, characterized in that, The sealing cover is inserted into a pin hole on the side of the cover body via a pin, and the installed sealing cover can rotate radially according to the pin.

9. The disposable drainage fluid test bottle according to claim 1, characterized in that, A scale is provided on the bottle to display the internal liquid volume.

10. The disposable drainage fluid test bottle according to claim 1, characterized in that, The bottle body consists of two interlocking sleeves and a pull rod. The pull rod includes a push rod and a sealing section installed at the end of the push rod. The diameter of the sealing section is the same as the inner diameter of the sleeve. The pull rod is inserted into the sleeve through the sealing section and is positioned opposite to the bottle cap.