Sputum collector

Abstract

This utility model relates to the field of medical device technology, specifically a sputum collector. The sputum collector includes a negative pressure suction bottle, which has a negative pressure tube for transmitting negative pressure and a suction tube for transmitting sputum. The volume of the negative pressure suction bottle is no more than 40 ml. An outlet I is located at the bottom of the negative pressure suction bottle, and an outlet II is located at the bottom or side of the bottle. Outlets I and II protrude from the outside of the bottle. Outlet I is connected to a waste bottle via an outlet tube, which has a regulating valve for controlling its opening and closing. An outlet II has a sealing cap, and a connecting ring is formed around its periphery. The inner side of the connecting ring has an internal thread for threaded connection with a sputum culture bottle. This utility model has the advantages of simple structure and easy operation. The small-volume negative pressure suction bottle facilitates sputum observation and collection, and also allows for selective sputum collection.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a sputum collector. Background Technology

[0002] For patients with respiratory diseases, sputum collectors are often needed to expel sputum. By collecting and culturing the sputum, infectious pathogens such as bacteria and fungi can be accurately identified, providing direct evidence for etiological diagnosis. Therefore, sputum expulsion is crucial for maintaining airway patency and reducing infection. In practice, sputum collectors can be divided into automatic and manual collection modes. The principles and tools for sputum suction are basically the same in both modes; the only difference is that in automatic collection mode, the suction catheter needs to be left in the patient's airway for an extended period.

[0003] Chinese patent document CN220632113U discloses a sputum collector, including a negative pressure suction bottle and a collection bottle for sputum culture. A suction tube is connected to both the suction bottle and the collection bottle via a three-way connector. The suction bottle continuously performs negative pressure suction to collect sputum, while the collection bottle is connected to another tube connected to the negative pressure system. When the suction bottle is closed, the sputum from the suction tube flows into the collection bottle for sample retention. While this solution achieves the transition from sputum collection to sputum sample retention without changing the tubing and is entirely sealed, removing the collection bottle from the device is cumbersome. Furthermore, after removal, the end connected to the suction tube and the collection bottle is exposed to air, potentially causing residual sputum to slip and contaminate the environment. To improve the ease of removing the collection bottle from the device, Chinese patent document CN206214476U proposes a sputum collector, including a suction tube, a sputum bottle, and a negative pressure tube. The suction tube is connected to the negative pressure tube through the sputum bottle. The upper part of the sputum bottle is threaded and sealed with a removable cap, allowing the sputum bottle to be separated from the cap for direct sputum sampling and testing. The drawback of this design is that sputum culture only requires approximately 5-10 ml of sputum, while the smallest existing suction bottle has a volume of 25 ml. Using the suction bottle directly as a sputum culture bottle would obviously result in a waste of consumables. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a sputum collector that can conveniently collect and retain sputum without the need for a T-junction or frequent replacement of the devices connected to the tubing, and allows for selective sputum collection.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A sputum collector includes a negative pressure suction bottle, which is equipped with a negative pressure tube for transmitting negative pressure and a suction tube for transmitting sputum. The volume of the negative pressure suction bottle is no more than 40 ml. The bottom of the negative pressure suction bottle is provided with an outlet I, and the bottom or side of the negative pressure suction bottle is provided with an outlet II. Outlets I and II protrude from the outside of the negative pressure suction bottle. Outlet I is connected to a waste bottle through an outlet tube. The outlet tube is provided with a regulating valve for controlling the opening and closing of the outlet tube, and an outlet II is provided with a sealing cap.

[0007] The inventive concept of this invention lies in limiting the volume of the negative pressure suction bottle described in Chinese patent document CN220632113U, which helps ensure the effectiveness of negative pressure suction. Based on practical experience, since the suction volume for a typical patient generally does not exceed 20ml per session, the maximum volume of the negative pressure suction bottle is limited to 40ml. After closing the regulating valve, sputum collects in the negative pressure suction bottle, facilitating sputum observation. Simultaneously, to provide sufficient receiving space for sputum or its flushing fluid, a waste bottle is also provided at the bottom of the negative pressure suction bottle. The observed sputum is discharged to the waste bottle through outlet I at the bottom. After flushing, the tubing is ready for the next suctioning operation. When sputum sampling is required, sputum can be conveniently discharged from the negative pressure suction bottle to a sputum culture bottle using outlet II, which protrudes from the outside of the negative pressure suction bottle. Moreover, selective sputum collection can be performed through outlets I and II: depending on the characteristics of the sputum, a portion can be released through outlet I first, and then the selectively collected sputum can be discharged through outlet II. Compared with the sputum collection procedure in Chinese patent document CN206214476U, the sputum collection procedure in this application is simpler and more convenient, and selective sputum collection can be performed easily and conveniently.

[0008] As an improvement, the negative pressure suction bottle is cylindrical and made of transparent material, with volume markings on its outer surface. Because the negative pressure suction bottle is small in size, the volume markings can relatively accurately measure the volume of sputum.

[0009] As an improvement, the suction catheter includes a suction tube I connected to a negative pressure suction bottle and a suction tube II for contact with the human body. The suction tube I and suction tube II are detachably connected. After one suctioning is completed, the suction tube II that is in contact with the human body must be discarded. Then, the end of the suction tube I is placed in a container containing physiological saline, and the suction tube I and the negative pressure suction bottle are rinsed with physiological saline under negative pressure.

[0010] As a further improvement, a connecting ring is formed around the periphery of the outlet II, and an internal thread is provided on the inner side of the connecting ring for threaded connection with the sputum culture bottle. The existing sputum culture bottle has an external thread, which facilitates fixing the sputum culture bottle to the outlet II, making operation easier. Since the outlet II is suspended above the sputum culture bottle, its outer wall will not be contaminated by sputum, thus helping to keep the outer wall of the outlet II clean.

[0011] As a further improvement, the length of the outlet II is greater than the length of the connecting ring, so that the end of the outlet II protrudes outside the connecting ring. This design reduces the probability of sputum contaminating the connecting ring.

[0012] As a further improvement, the sealing cap has an external thread that matches the internal thread of the connecting ring. After the sealing cap is threadedly connected to the connecting ring and tightened, the inside of the sealing cap abuts against the end of outlet II. Compared with the solution where the sealing cap is fixedly connected to outlet II, since the sealing cap in this solution is fixedly connected to the connecting ring, the sealing cap can generate an upward compressive force on the end of outlet II, which is beneficial to the sealing of the end of outlet II and reduces the probability of sputum directly contacting the sealing cap.

[0013] In summary, this utility model has the advantages of simple structure and easy operation. The small-volume negative pressure suction bottle facilitates sputum observation and sputum collection, and also allows for selective sputum collection. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0015] Figure 2 for Figure 1 Enlarged view of section A;

[0016] Figure 3 This is a schematic diagram of the negative pressure suction bottle in Embodiment 2 of the utility model;

[0017] Figure 4 This is a schematic diagram of the negative pressure suction bottle in embodiment 3 of the utility model;

[0018] Figure 5 for Figure 4 A cross-sectional view along the BB direction, showing the state of the sputum culture bottle after it is connected to the connecting ring;

[0019] Figure 6 This is a diagram showing the fit between the sealing cap and the connecting ring in Embodiment 3 of this utility model.

[0020] In the diagram: 10. Negative pressure suction bottle; 11. Outlet I; 12. Outlet II; 13. Volume scale; 14. Connecting ring; 20. Negative pressure tube; 30. Suction tube; 31. Suction tube I; 32. Suction tube II; 40. Outlet tube; 50. Waste liquid bottle; 60. Adjusting valve; 70. Sealing cap; 80. Sputum culture bottle. Detailed Implementation

[0021] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0022] Example 1

[0023] like Figure 1 , Figure 2 As shown, the sputum collector described in this application includes a negative pressure suction bottle 10 and a waste bottle 50. The negative pressure suction bottle 10 is cylindrical, made of transparent material, with a volume of 25ml, and has volume markings 13 on its outer surface. The waste bottle 50 has a volume of 3L. The top of the negative pressure suction bottle 10 is provided with a negative pressure tube 20 for transmitting negative pressure and a suction tube 30 for transmitting sputum. The suction tube 30 includes a suction tube I 31 connected to the negative pressure suction bottle 10 and a suction tube II 32 for contact with the human body; the suction tube I 31 and the suction tube II 32 are inserted into each other. The suction tube II 32 is a disposable consumable; the suction tube I 31, after rinsing, can be used together with the negative pressure suction bottle 10 for 5-7 days.

[0024] The bottom of the negative pressure suction bottle 10 is provided with outlet I 11 and outlet II 12. Both outlet I 11 and outlet II 12 are conical and protrude from the outside of the negative pressure suction bottle 10. A sealing cap 70 is provided on outlet II 12, which is fastened to the end of outlet II 12. When collecting sputum samples, the negative pressure suction bottle 10 is tilted so that outlet II 12 faces upward, and then the sealing cap 70 is unscrewed to prevent sputum from dripping into the external environment. The negative pressure suction bottle 10 is preferably made of a material that can be deformed by pressure, such as a plastic with a certain degree of flexibility, so that sputum can be squeezed out from outlet II 12 by squeezing the negative pressure suction bottle 10.

[0025] Outlet I 11 and Outlet II 12 are arranged side by side. Outlet I 11 is connected to the waste liquid bottle 50 via an outlet tube 40. An adjusting valve 60 is installed on the outlet tube 40 to control its opening and closing. The adjusting valve 60 is located at the top of the outlet tube 40 and can be a flow regulating valve commonly used in intravenous infusion. When flushing the suction catheter I 31 and the negative pressure suction bottle 10 with physiological saline, the adjusting valve 60 is closed, allowing the inner wall of the negative pressure suction bottle 10 to be soaked to remove sputum remaining on the inner wall of the negative pressure suction bottle 10.

[0026] As mentioned above, the negative pressure suction bottle 10 of this application is characterized by its small volume, generally not exceeding 40ml.

[0027] Example 2

[0028] like Figure 3 As shown, the difference between this embodiment and Embodiment 1 is that the bottom of the negative pressure suction bottle 10 is also provided with a connecting ring 14 with internal threads. The connecting ring 14 is located around the outlet II 12, and the length of the outlet II 12 is greater than the length of the connecting ring 14, so that the end of the outlet II 12 protrudes outside the connecting ring 14. In the prior art, the sputum culture bottle 80 has external threads. After the external threads of the sputum culture bottle 80 are rotated and fixed with the internal threads of the connecting ring 14, the outlet II 12 is suspended in the upper part of the sputum culture bottle 80. Because the end of the outlet II 12 containing sputum does not contact or rub against the inner wall of the sputum culture bottle 80, sputum is not easily contaminated to the outer wall of the outlet II 12.

[0029] Example 3

[0030] The difference between this embodiment and Embodiment 2 is that:

[0031] like Figure 4-5 As shown, outlet II 12 and its surrounding connecting ring 14 are located on the side of the negative pressure suction bottle 10. Because the negative pressure suction bottle 10 is relatively small, outlet II 12 is not arranged side-by-side with outlet I 11, which facilitates operation. After connecting the sputum culture bottle 80 to the connecting ring 14, the negative pressure suction bottle 10 is tilted, allowing sputum to flow out from outlet II 12.

[0032] like Figure 6 As shown, the sealing cap 70 of the outlet II 12 has an external thread that matches the internal thread of the connecting ring 14. The outlet II 12 has a certain degree of flexibility. After the sealing cap 70 is threadedly connected to the connecting ring 14 and tightened, the inside of the sealing cap 70 abuts against the end of the outlet II 12 and exerts a certain amount of pressure on the outlet II 12, which is beneficial to the sealing of the outlet II 12.

Claims

1. A sputum collector comprising a negative pressure suction bottle (10) provided with a negative pressure tube (20) for transmitting negative pressure and a sputum suction tube (30) for transmitting sputum, characterized in that: The volume of the negative pressure suction bottle (10) is no more than 40 ml. The bottom of the negative pressure suction bottle (10) is provided with an outlet I (11) and the bottom or side of the negative pressure suction bottle (10) is provided with an outlet II (12). The outlet I (11) and the outlet II (12) protrude from the outside of the negative pressure suction bottle (10). The outlet I (11) is connected to the waste liquid bottle (50) through the outlet tube (40). The outlet tube (40) is provided with a regulating valve (60) for controlling the opening and closing of the outlet tube (40). The outlet II (12) is provided with a sealing cap (70).

2. The sputum collector of claim 1, wherein: The negative pressure suction bottle (10) is cylindrical and made of transparent material. The outer surface of the negative pressure suction bottle (10) is provided with volume scale (13).

3. The sputum collector of claim 1, wherein: The suction tube (30) includes a suction tube I (31) connected to a negative pressure suction bottle (10) and a suction tube II (32) for contact with the human body. The suction tube I (31) and the suction tube II (32) are detachably connected.

4. The sputum collector of claim 1, wherein: A connecting ring (14) is formed around the outlet II (12), and the inner side of the connecting ring (14) is provided with an internal thread for threaded connection with the sputum culture bottle (80).

5. The sputum collector of claim 4, wherein: The length of the outlet II (12) is greater than the length of the connecting ring (14) so ​​that the end of the outlet II (12) is exposed outside the connecting ring (14).

6. The sputum collector of claim 4, wherein: The sealing cap (70) has an external thread that matches the internal thread of the connecting ring (14). After the sealing cap (70) is threadedly connected to the connecting ring (14) and tightened, the inside of the sealing cap (70) abuts against the end of the outlet II (12).

Images