Negative pressure precise sampling drainage bag

Abstract

The utility model belongs to the field of medical apparatus and especially is a drainage bag of negative pressure accurate sampling, which comprises: drainage bag body, three -way valve, drainage tube, three -way valve includes valve body and rotates handle of installation on valve body, valve body has first interface, second interface, third interface, first interface is connected with the bottom of drainage bag body, the inside of second interface is fixed with puncture needle, and puncture needle does not leak out second interface, drainage tube is connected with the top of drainage bag body. The utility model discloses three operating conditions of accurate sampling, fast liquid discharge and closing are realized through three -way valve, can switch according to different use state, improves work efficiency, and installs puncture needle in the second interface of three -way valve can effectively control the flow and speed of liquid, is convenient for sampling to leave the specimen, is convenient for measurement, avoids the pollution and reduces the infection risk, and the operation steps are simple, avoids the operation of two people's assistance, is safe and efficient, saves time and labour.

Description

Technical Field

[0001] This utility model belongs to the field of medical devices, and in particular, it is a drainage bag that can perform precise negative pressure sampling. Background Technology

[0002] Drainage bags are widely used in the treatment of various conditions, such as chest drainage bags and abdominal drainage bags, to drain accumulated fluid or pus. Clinically, for diagnosis and differential diagnosis, fluid samples must be collected as prescribed by the doctor to examine the nature of the fluid, thereby assisting in diagnosis, differential diagnosis, and guiding treatment.

[0003] However, in clinical practice, drainage bags are limited in form, and the speed of specimen collection at the spiral opening at the bottom of the drainage bag is difficult to control. Usually, the liquid in the drainage bag needs to be collected into a larger container (such as a mineral water bottle) or into a collection tube for testing. On the one hand, this process requires two people to assist, which is time-consuming and laborious. On the other hand, because the diameter of the collection tube is small, it is very easy for the specimen to leak out during collection. The specimen collection operation can easily contaminate the operator and the surrounding environment of the bag, affecting the accuracy of the test and increasing the risk of infection for medical staff. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a drainage bag that can achieve both rapid drainage and precise sampling, and is simple, efficient, safe and pollution-free, and capable of negative pressure precise sampling.

[0005] The technical solution adopted by this utility model to solve the technical problem is:

[0006] This utility model provides a drainage bag capable of precise negative pressure sampling, comprising: a drainage bag body, a three-way valve, and a drainage tube. The three-way valve includes a valve body and a rotating handle mounted on the valve body. The valve body has a first interface, a second interface, and a third interface. The first interface is connected to the bottom of the drainage bag body, and a puncture needle is fixedly installed inside the second interface, with the puncture needle not protruding from the second interface. The drainage tube is connected to the top of the drainage bag body.

[0007] Furthermore, a puncture needle mounting seat is installed inside the second interface, and the puncture needle is mounted on the puncture needle mounting seat.

[0008] Furthermore, the distance between the tip of the puncture needle and the end face of the second interface away from the rotating handle is 0.2 cm to 0.4 cm.

[0009] Furthermore, a detachable protective cap is connected to the end of the second interface away from the rotating handle.

[0010] Furthermore, the second interface is a reducing pipe.

[0011] Furthermore, the variable diameter tube has a thin tube and a thick tube, and during sampling, it is connected to the collection tube inside the thick tube.

[0012] Furthermore, the length of the thicker tube of the reducing pipe is 1.25 cm to 1.75 cm, and the diameter of the thicker tube is 1.5 cm to 2 cm.

[0013] Furthermore, a label sleeve is installed on the drainage tube, and the distance between the label sleeve and one end of the drainage tube located inside the drainage bag is 5 cm to 10 cm.

[0014] Furthermore, an anti-backflow plate is fitted onto one end of the drainage tube inside the drainage bag, and a drainage tube connector is provided at the other end.

[0015] Furthermore, a suspension strap is fixedly installed at the top of the drainage bag.

[0016] The advantages and positive effects of this utility model are:

[0017] This invention achieves three operating states—precise sampling, rapid drainage, and shutdown—through a three-way valve, which can be switched according to different usage states, improving work efficiency. Furthermore, the installation of a puncture needle in the second port of the three-way valve can effectively control the flow and speed of the liquid, facilitating sample collection and measurement, avoiding contamination and reducing the risk of infection. The operation steps are simple, eliminating the need for two-person assistance, and are safe, efficient, time-saving, and labor-saving. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the drainage bag for precise negative pressure sampling according to this utility model;

[0019] Figure 2 for Figure 1 Enlarged schematic diagram of a three-way valve;

[0020] Figure 3 This diagram illustrates the usage state of the drainage bag capable of precise negative pressure sampling according to this utility model when sampling through the collection tube.

[0021] Figure 4 for Figure 3 Enlarged schematic diagram of a three-way valve.

[0022] The above figures include the following reference numerals:

[0023] 1- Drainage bag body; 2- Three-way valve; 21- Valve body; 211- First interface; 212- Second interface; 213- Third interface; 214- Puncture needle; 215- Puncture needle mounting seat; 22- Rotary handle; 23- Protective cap; 3- Drainage tube; 4- Label sleeve; 5- Anti-backflow plate; 6- Drainage tube connector; 7- Suspension strap; 8- Collection tube. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0026] In the description of this utility model, it should be understood that the terms "length," "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] like Figures 1-4 As shown, this utility model provides a drainage bag capable of precise negative pressure sampling, comprising: a drainage bag body 1, a three-way valve 2, and a drainage tube 3.

[0028] like Figures 1-2 As shown, the three-way valve 2 includes a valve body 21 and a rotating handle 22 mounted on the valve body 21. The valve body 21 has a first port 211, a second port 212, and a third port 213. The first port 211 communicates with the bottom of the drainage bag body 1. A puncture needle 214 is fixedly installed inside the second port 212, and the puncture needle 214 does not protrude from the second port 212. Specifically, a puncture needle mounting seat 215 is installed inside the second port 212, and the puncture needle 214 is mounted on the puncture needle mounting seat 215. In this invention, a puncture needle 214 is installed in the second port 212 of the three-way valve 2. The puncture needle 214 is inserted into the collection tube 8 with a collection tube cap 8. Because there is negative pressure inside the collection tube 8, the liquid flows out accurately, facilitating sampling and measurement, avoiding contamination, eliminating the need for two-person operation, simplifying the operation process, and improving work efficiency.

[0029] like Figures 1-2As shown, to effectively prevent patients or medical staff from coming into contact with the needle, the distance between the needle tip of the puncture needle 214 and the end face of the second interface 212 away from the rotating handle 22 is 0.2 cm to 0.4 cm. Furthermore, a detachable protective cap 23 is connected to the end of the second interface 212 away from the rotating handle 22 to prevent patients or medical staff from being pricked.

[0030] like Figures 1-4 As shown, in one specific embodiment, the second interface 212 is a variable diameter tube, which has a thin tube and a thick tube. During sampling, it is connected to the collection tube 8 inside the thick tube. The length of the thick tube of the variable diameter tube is 1.25 cm to 1.75 cm, and the diameter of the thick tube is 1.5 cm to 2 cm. The second interface 212 of this utility model is set as a variable diameter tube, which facilitates the connection with the collection tube 8.

[0031] like Figure 1 , Figure 3 As shown, the drainage tube 3 is connected to the top of the drainage bag body 1. An anti-backflow plate 5 is fitted onto one end of the drainage tube 3 inside the drainage bag body 1, and a drainage tube connector 6 is provided at the other end. The anti-backflow plate 5 on the drainage tube 3 is used to prevent liquid backflow, and the drainage tube connector 6 facilitates connection. Furthermore, a hanging strap 7 is fixed to the top of the drainage bag body 1 for easy hanging.

[0032] like Figure 1 , Figure 3 As shown, to facilitate the identification of information from the drainage bag, a label sleeve 4 is installed on the drainage tube 3. The distance between the label sleeve 4 and the end of the drainage tube 3 located inside the drainage bag body 1 is 5-10 cm. This utility model allows a label card to be inserted into the label sleeve 4, facilitating the identification of information such as the insertion date, name, remarks, and signature on the label card. On the one hand, placing the label card inside the label sleeve 4 effectively prevents the label card from wrinkling, wearing, or having its information erased, making identification easier; on the other hand, the label card is located near the end of the drainage bag body 1, away from the patient's body, improving patient comfort and facilitating confirmation by medical staff, thus improving work efficiency.

[0033] The method of using this utility model is as follows:

[0034] like Figure 3 , Figure 4 As shown, when sampling through the collection tube 8, the protective cap 23 is opened, and the collection tube 8 with the collection tube cap 8 is connected to the second interface 212. The puncture needle 214 is inserted into the collection tube 8. The rotating handle 22 of the three-way valve 2 is rotated to make the passage of the first interface 211 and the passage of the second interface 212 connected and the passage of the third interface 213 isolated, so that the liquid flows accurately from the second interface 212 into the collection tube 8, which is convenient for sampling and measurement.

[0035] When performing rapid drainage, rotate the handle 22 of the three-way valve 2 to connect the passage of the first port 211 and the third port 213 and isolate the passage of the second port 212, so that the liquid is quickly discharged from the third port 213.

[0036] When it is necessary to stop the liquid flow, turn the rotary handle 22 of the three-way valve 2 to isolate the passage of the first port 211 and prevent the liquid from flowing out from the second port 212 and the third port 213.

[0037] This invention achieves three operating states—precise sampling, rapid drainage, and shutdown—through a three-way valve 2. It can switch between different operating states, improving work efficiency. Furthermore, the installation of a puncture needle 214 in the second port 212 of the three-way valve 2 can effectively control the flow rate and speed of the liquid, facilitating sample collection and measurement, avoiding contamination and reducing the risk of infection. The operation steps are simple, eliminating the need for two-person assistance, and are safe, efficient, time-saving, and labor-saving.

[0038] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A drainage bag capable of precise negative pressure sampling, characterized in that, include: Drainage bag body (1); A three-way valve (2) includes a valve body (21) and a rotating handle (22) mounted on the valve body (21). The valve body (21) has a first interface (211), a second interface (212), and a third interface (213). The first interface (211) is connected to the bottom of the drainage bag body (1). The second interface (212) has a puncture needle (214) fixed inside, and the puncture needle (214) does not protrude from the second interface (212). Drainage tube (3) is connected to the top of the drainage bag body (1).

2. The drainage bag capable of precise negative pressure sampling according to claim 1, characterized in that, The second interface (212) has a puncture needle mounting seat (215) installed inside, and the puncture needle (214) is mounted on the puncture needle mounting seat (215).

3. The drainage bag capable of precise negative pressure sampling according to claim 1, characterized in that, The distance between the tip of the puncture needle (214) and the end face of the second interface (212) away from the rotating handle (22) is 0.2 cm to 0.4 cm.

4. The drainage bag capable of precise negative pressure sampling according to claim 1, characterized in that, A detachable protective cap (23) is connected to the end of the second interface (212) away from the rotating handle (22).

5. The drainage bag capable of precise negative pressure sampling according to claim 1, characterized in that, The second interface (212) is a reducing pipe.

6. The drainage bag capable of precise negative pressure sampling according to claim 5, characterized in that, The variable diameter tube has a thin tube and a thick tube. During sampling, it is connected to the collection tube (8) inside the thick tube.

7. The drainage bag capable of precise negative pressure sampling according to claim 6, characterized in that, The length of the thicker tube of the reducing pipe is 1.25 cm to 1.75 cm, and the diameter of the thicker tube is 1.5 cm to 2 cm.

8. The drainage bag capable of precise negative pressure sampling according to claim 1, characterized in that, A label sleeve (4) is installed on the drainage tube (3), and the distance between the label sleeve (4) and the end of the drainage tube (3) located inside the drainage bag body (1) is 5 cm to 10 cm.

9. The drainage bag capable of precise negative pressure sampling according to claim 1, characterized in that, An anti-backflow plate (5) is fitted at one end of the drainage tube (3) inside the drainage bag body (1), and a drainage tube connector (6) is provided at the other end.

10. The drainage bag capable of precise negative pressure sampling according to claim 1, characterized in that, The top of the drainage bag (1) is fixed with a hanging strap (7).

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