Improved medical drainage bag
By introducing a side bag and a rotary switch to control the liquid passage in the medical drainage bag, the leakage and contamination problems in the sampling process of existing drainage bags are solved, and convenient sampling and safe storage of drainage fluid are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGSHAN HOSPITAL XIAMEN UNIV
- Filing Date
- 2025-01-21
- Publication Date
- 2026-05-19
AI Technical Summary
Existing medical drainage bags have limited functionality, posing risks of leakage and contamination when medical staff collect drainage fluids, resulting in low sampling safety and efficiency.
An improved medical drainage bag is designed, comprising a main bag and a side bag. The side bag contains a sterile culture bottle, which is connected to the main bag via a connecting tube. A rotary switch controls the opening and closing of the liquid passage, enabling convenient sampling of the drainage fluid and avoiding leakage and contamination.
It improves the safety and efficiency of drainage fluid sampling, reduces the risk of leakage and contamination, and enhances the safety and convenience of the sampling process.
Smart Images
Figure CN224251855U_ABST
Abstract
Description
[Technical Field]
[0001] This utility model relates to the field of medical supplies technology, specifically to an improved medical drainage bag. [Background Technology]
[0002] Medical drainage bags are specialized containers used after surgery to drain fluids such as blood and effusion from the body or deep surgical sites. They are typically connected to the end of a drainage tube to collect and store the drained fluid. The two ends of the drainage tube are connected to a puncture needle and the drainage bag, respectively. One purpose of drainage is to collect the drained fluid for bacterial culture. Currently, commonly used drainage bags have a single function; all the drained fluid must be stored in the drainage bag.
[0003] For example, prior art CN219127424U discloses a drainage bag, including a bag body with a drain port at the center of the bottom and an inlet tube at the center of the top. The bag body mainly consists of an outer frame and a transparent bag located in the middle of the outer frame. This type of drainage bag only has conventional drainage function. If medical staff need to sample the drainage fluid, they need to use a separate sampling device to extract the drainage fluid and inject it into different sterile culture bottles. This process carries the risks of contamination and specimen leakage.
[0004] In view of this, this case involves in-depth research into the aforementioned issues, which led to the formation of this case. [Utility Model Content]
[0005] The present invention aims to solve the above-mentioned technical problems by providing an improved medical drainage bag, which facilitates medical staff in sampling drainage fluid, avoids leakage and contamination risks, and improves sampling safety and efficiency.
[0006] This invention is implemented as follows: An improved medical drainage bag includes a main bag and at least one side bag; the main bag has an inlet pipe at its upper end and an outlet pipe at its lower end; the side bag is located at the lower end of the main bag and next to the outlet pipe, and the main bag and the side bag are connected by a connecting pipe; the connecting pipe includes a vertical part and a horizontal part; a fluid passage is formed in the vertical part, and a sterile culture bottle is movably connected to the bottom end of the vertical part; a first cylindrical rotary switch is sleeved on the horizontal part, and the first cylindrical rotary switch has a connecting cavity opened radially; when the connecting cavity is oriented in the same direction as the fluid passage, the fluid passage is opened; when the connecting cavity is perpendicular to the fluid passage, the fluid passage is disconnected.
[0007] Furthermore, a first annular groove is formed on the inner wall of the horizontal portion, and a first annular protrusion is formed on the outer wall of the first cylindrical rotary switch to cooperate with the first annular groove.
[0008] Furthermore, one end of the first cylindrical rotary switch is provided with a first control part, and the first control part is marked with a first indicator arrow, the direction of which is the same as that of the connecting cavity.
[0009] Furthermore, the bottom end of the vertical part is threadedly connected to a sterile culture bottle.
[0010] Furthermore, the heat-pressed edge of the side pocket is provided with an easy-tear line.
[0011] Furthermore, the inlet pipe is connected to a tee connector, which includes a main connecting pipe, a first threaded connector, a second threaded connector, a straight connector, and a second cylindrical rotary switch. The main connecting pipe is a hollow tube with its rear end connected to the top end of the inlet pipe. The first threaded connector, the second threaded connector, and the straight connector are circumferentially distributed along the radial direction of the main connecting pipe and are connected to the main connecting pipe. The second cylindrical rotary switch is rotatably fitted inside the main connecting pipe. The second cylindrical rotary switch has a cylindrical cavity inside, which is connected to the inlet pipe. A connection port is opened on the tube wall of the second cylindrical rotary switch, and the connection port is connected to the cylindrical cavity.
[0012] Furthermore, the end of the second cylindrical rotary switch is provided with a second control part, and the second control part is marked with a second indicator arrow, the direction of which is the same as that of the connection port.
[0013] Furthermore, the outer wall of the second cylindrical rotary switch is formed with a second annular protrusion, and the inner wall of the main connecting pipe is formed with a second annular groove for engaging with the second annular protrusion.
[0014] Furthermore, the drainage bag is a transparent drainage bag, and the surface of the transparent drainage bag is marked with scale lines.
[0015] Furthermore, the top of the drainage bag is also provided with a suspension line.
[0016] This improved medical drainage bag features a side bag with a sterile culture bottle inside, which is movably connected to the bottom of the vertical section. This facilitates drainage fluid sampling, eliminating the need for medical staff to manually extract the drainage fluid. Furthermore, the inclusion of a first cylindrical rotary switch allows the fluid passage to be opened and closed as needed, preventing drainage fluid from easily spraying out during sampling and mitigating the risks of specimen leakage and contamination, thus improving sampling safety and efficiency. [Attached Image Description]
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0018] Figure 1 This is a schematic diagram of the drainage bag in this utility model.
[0019] Figure 2 This is a cross-sectional view of the drainage bag in this utility model.
[0020] Figure 3 This is a schematic diagram of the connection structure between the connecting tube and the sterile culture bottle in this utility model.
[0021] Figure 4 This is a schematic diagram of the liquid passage in the open state of this utility model.
[0022] Figure 5 This is a schematic diagram of the liquid passage in the disconnected state of this utility model.
[0023] Figure 6 This is a structural schematic diagram of the three-way connector in this utility model.
[0024] Figure 7 This is a schematic diagram of the structure of the second cylindrical rotary switch in this utility model.
[0025] Figure 8 This is a cross-sectional view of the tee connector in this utility model.
[0026] Main bag 100, inlet pipe 101, outlet pipe 102, side bag 200, easy-tear line 201, connecting pipe 1, vertical part 11, liquid passage 111, horizontal part 12, first annular groove 121, sterile culture bottle 2, first cylindrical rotary switch 3, connecting cavity 31, first annular protrusion 32, first control part 33, first indicator arrow 34, tee connector 4, main connecting pipe 41, second annular groove 411, first threaded connector 42, second threaded connector 43, straight connector 44, second cylindrical rotary switch 45, cylindrical cavity 451, connecting port 452, second annular protrusion 453, second control part 46, second indicator arrow 47, suspension line 5.
Detailed Implementation Methods
[0027] To better understand the technical solution of this utility model, the technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0028] It should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing these embodiments and for 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. Furthermore, the terms "first," "second," etc., 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. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.
[0029] Please see Figures 1 to 8 As shown, this utility model provides an improved medical drainage bag, including a main bag 100 and at least one side bag 200; the main bag 100 has an inlet pipe 101 at its upper end and an outlet pipe 102 at its lower end; the side bag 200 is located at the lower end of the main bag 100 and is located on the side of the outlet pipe 102, and the main bag 100 and the side bag 200 are connected by a connecting pipe 1; the connecting pipe 1 includes a vertical part 11 and a horizontal part 12; a fluid passage 111 is formed in the vertical part 11, and a sterile culture bottle 2 is movably connected to the bottom end of the vertical part 11; a first cylindrical rotary switch 3 is sleeved on the horizontal part 12, and the first cylindrical rotary switch 3 has a connecting cavity 31 radially opened; when the connecting cavity 31 and the fluid passage 111 are oriented in the same direction, the fluid passage 111 is open; when the connecting cavity 31 and the fluid passage 111 are perpendicular to each other, the fluid passage 111 is disconnected.
[0030] The improved medical drainage bag of this utility model features a side bag 200, within which a sterile culture bottle 2 is movably connected to the bottom of the vertical part 11. This facilitates drainage fluid sampling, eliminating the need for medical staff to manually extract the drainage fluid. Furthermore, the first cylindrical rotary switch 3 allows the fluid passage 111 to be opened and closed as needed, preventing drainage fluid from easily spraying out during sampling, thus avoiding the risks of specimen leakage and contamination, and improving sampling safety and efficiency.
[0031] In this utility model, there are two side bags 200, which are respectively located on both sides of the liquid outlet pipe 102.
[0032] In this invention, the connecting edge between the main bag 100 and the side bag 200 outside the connecting pipe 1 is formed by a hot pressing process.
[0033] In this utility model, as shown in the appendix Figure 4As shown, a first annular groove 121 is formed on the inner wall of the horizontal portion 12, and a first annular protrusion 32 is formed on the outer wall of the first cylindrical rotary switch 3 to cooperate with the first annular groove 121. The arrangement of the first annular groove 121 and the first annular protrusion 32 can limit the first cylindrical rotary switch 3 and the horizontal portion 12 to only rotate radially relative to each other, without axial sliding. The first cylindrical rotary switch 3 will not slide out of the horizontal portion 12, and thus the connecting cavity 31 can be accurately aligned with the liquid passage 111 during rotation.
[0034] In this invention, one end of the first cylindrical rotary switch 3 is provided with a first control part 33, and the first control part 33 is marked with a first indicator arrow 34. The direction of the first indicator arrow 34 is the same as that of the connecting cavity 31. When the first indicator arrow 34 is set upward or downward, the liquid passage 111 is in an open state; when the first indicator arrow 34 is set to the left or right, the liquid passage 111 is in a closed state.
[0035] In this invention, the bottom end of the vertical part 11 is threadedly connected to the sterile culture bottle 2. The threaded connection facilitates the disassembly and assembly of the connecting tube 1 and the sterile culture bottle 2, and the connection between the two has good stability and sealing.
[0036] In this invention, the side bag 200 has an easy-tear line 201 on its heat-pressed edge. When not in use, the sterile culture bottle 2 is connected to the connecting tube 1 and wrapped inside the side bag 200, reducing air contact and improving hygiene. When in use, the side bag 200 is torn open from the easy-tear line 201 to check the connection status between the connecting tube 1 and the sterile culture bottle 2.
[0037] In this utility model, as shown in the appendix Figure 6-8 As shown, the inlet pipe 101 is connected to a three-way connector 4, which includes a main connecting pipe 41, a first threaded connector 42, a second threaded connector 43, a straight connector 44, and a second cylindrical rotary switch 45. The main connecting pipe 41 is a hollow tube and its rear end is connected to the top end of the inlet pipe 101. The first threaded connector 42, the second threaded connector 43, and the straight connector 44 are circumferentially distributed along the radial direction of the main connecting pipe 41 and are connected to the main connecting pipe 41. The second cylindrical rotary switch 45 is rotatably sleeved inside the main connecting pipe 41. A cylindrical cavity 451 is opened inside the second cylindrical rotary switch 45, which is connected to the inlet pipe 101. A connection port 452 is opened on the pipe wall of the second cylindrical rotary switch 45, which is connected to the cylindrical cavity 451. By installing a three-way connector 4 at the inlet pipe 101, the drainage bag can be adapted to various sizes of drainage tubes, increasing the applicability of the drainage bag.
[0038] As needed, medical staff can rotate the second cylindrical rotary switch 45 to connect the connection port 452 to different connectors; after the drainage is completed, rotate the first cylindrical rotary switch 3 to turn the connection port 452 downward, disconnect the inlet tube 101 from each connector, and the drainage bag and drainage tube will not drip drainage fluid when separated.
[0039] In this invention, the end of the second cylindrical rotary switch 45 is provided with a second control part 46, and the second control part 46 is marked with a second indicator arrow 47, the direction of which is the same as that of the connection port 452. The second control part 46 is a triangular control part, which facilitates manual rotation of the second control part 46. When the second indicator arrow 47 points upward, the connection port 452 is connected to the first threaded connector 42; when the second indicator arrow 47 points to the left, the connection port 452 is connected to the second threaded connector 43; and when the second indicator arrow 47 points to the right, the connection port 452 is connected to the straight connector 44. The setting of the second indicator arrow 47 enables medical personnel to accurately switch the connection port 452, greatly improving the ease of operation of the tee connector 4.
[0040] In this invention, the outer wall of the second cylindrical rotary switch 45 has a second annular protrusion 453, and the inner wall of the main connecting pipe 41 has a second annular groove 411 for engaging with the second annular protrusion 453. The arrangement of the second annular protrusion 453 and the second annular groove 411 can limit the second cylindrical rotary switch 45 and the main connecting pipe 41 to only undergo radial relative rotation, without axial sliding, so that the connecting port 452 can be accurately aligned with each connector during rotation; it can also prevent the head of the second cylindrical rotary switch 45 from sliding out of the main connecting pipe 41.
[0041] In this invention, the drainage bag is a transparent drainage bag, and the surface of the transparent drainage bag is marked with scale lines to facilitate observation of the drainage fluid volume. The transparent drainage bag is made of any one of the following materials: polyvinyl chloride, ABS, and polypropylene.
[0042] In this invention, the top of the drainage bag is also provided with a hanging line 5, which makes it easy to hang the drainage bag on the support or bedside during drainage, so that the drainage bag can always be in a vertical state to facilitate the flow of drainage fluid.
[0043] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.
Claims
1. An improved medical drainage bag, characterized in that: It includes a main bag and at least one side bag; the main bag has an inlet pipe at the upper end and an outlet pipe at the lower end; the side bag is located at the lower end of the main bag and is located next to the outlet pipe, and the main bag and the side bag are connected by a connecting pipe; The connecting tube includes a vertical section and a horizontal section; a liquid passage is formed in the vertical section, and a sterile culture bottle is movably connected to the bottom end of the vertical section; a first cylindrical rotary switch is sleeved on the horizontal section, and the first cylindrical rotary switch has a connecting cavity opened radially; when the connecting cavity is oriented in the same direction as the liquid passage, the liquid passage is opened; when the connecting cavity is perpendicular to the liquid passage, the liquid passage is disconnected.
2. The improved medical drainage bag as described in claim 1, characterized in that: The inner wall of the horizontal portion is formed with a first annular groove, and the outer wall of the first cylindrical rotary switch is formed with a first annular protrusion that mates with the first annular groove.
3. The improved medical drainage bag as described in claim 2, characterized in that: One end of the first cylindrical rotary switch is provided with a first control part, and the first control part is marked with a first indicator arrow, the direction of which is the same as that of the connecting cavity.
4. The improved medical drainage bag as described in claim 3, characterized in that: The bottom end of the vertical part is threadedly connected to the sterile culture bottle.
5. The improved medical drainage bag as described in claim 4, characterized in that: The side pockets have easy-tear lines on their heat-pressed edges.
6. The improved medical drainage bag as described in any one of claims 1-5, characterized in that: The inlet pipe is connected to a three-way connector, which includes a main connecting pipe, a first threaded connector, a second threaded connector, a straight cylindrical connector, and a second cylindrical rotary switch. The main connecting pipe is a hollow tube and its rear end is connected to the top end of the liquid inlet pipe. The first threaded connector, the second threaded connector, and the straight cylindrical connector are circumferentially distributed along the radial direction of the main connecting pipe and are connected to the main connecting pipe. The second cylindrical rotary switch is rotatably sleeved inside the main connecting pipe. The second cylindrical rotary switch has a cylindrical cavity inside, which is connected to the liquid inlet pipe. A connection port is opened on the pipe wall of the second cylindrical rotary switch, which is connected to the cylindrical cavity.
7. The improved medical drainage bag as described in claim 6, characterized in that: The end of the second cylindrical rotary switch is provided with a second control part, and the second control part is marked with a second indicator arrow, the direction of which is the same as that of the connection port.
8. The improved medical drainage bag as described in claim 7, characterized in that: The outer wall of the second cylindrical rotary switch has a second annular protrusion, and the inner wall of the main connecting pipe has a second annular groove for engaging with the second annular protrusion.
9. The improved medical drainage bag as described in claim 8, characterized in that: The drainage bag is a transparent drainage bag, and the surface of the transparent drainage bag is marked with scale lines.
10. The improved medical drainage bag as described in claim 9, characterized in that: The top of the drainage bag is also equipped with a hanging line.