Liquid weight monitoring and alarming device for drainage bag
By designing a liquid weight monitoring and alarm device for the drainage bag, the problem of unstable drainage speed during pleural and peritoneal effusion drainage was solved, enabling real-time monitoring and alarm, and improving the safety and controllability of drainage management.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN TUMOR HOSPITAL
- Filing Date
- 2025-04-17
- Publication Date
- 2026-05-01
AI Technical Summary
In existing technologies, changes in patient position during pleural and peritoneal effusion drainage make it difficult to control the drainage rate stably, posing a risk of complications due to excessively rapid drainage. Furthermore, the lack of real-time monitoring and alarm devices increases the difficulty of clinical nursing care.
A liquid weight monitoring and alarm device for drainage bags was designed, including a fixed frame, an L-shaped slide rail, a slider, a control panel, a tension sensor, and a buzzer. The tension sensor monitors the liquid weight in the drainage bag in real time and alarms when the weight exceeds a set value. The device can be fixed on the hospital bed to adapt to different usage needs.
It enables real-time monitoring and alarm of the fluid weight in the drainage bag, improving the safety of drainage management, reducing the risk of complications, and enhancing the controllability and safety of clinical care.
Smart Images

Figure CN224189340U_ABST
Abstract
Description
A liquid weight monitoring and alarm device for drainage bags Technical Field
[0001] This utility model relates to the field of liquid weight monitoring technology for drainage bags, and in particular to a liquid weight monitoring alarm device for drainage bags. Background Technology
[0002] Malignant tumors have become a major public health problem posing a serious threat to the health of Chinese residents. In recent years, the incidence of malignant tumors in my country has continued to rise, with an average annual growth rate of 1.4% for all cancer types, ranking first in the world in terms of new cases. Pleural and peritoneal effusions are common complications in patients with advanced malignant tumors, especially lung cancer, liver cancer, stomach cancer, pancreatic cancer, and colorectal cancer. Their formation mechanism is mainly related to tumor metastasis to the pleura or peritoneum, leading to increased microvascular permeability and abnormal fluid infiltration into the pleural or peritoneal cavity.
[0003] The accumulation of pleural and peritoneal effusions can trigger a series of serious pathophysiological changes. Large amounts of pleural effusion can compress lung tissue, restrict lung expansion, leading to dyspnea, hypoxemia, and even respiratory failure. Peritoneal effusion, on the other hand, causes the diaphragm to shift upwards, affecting cardiopulmonary function, increasing circulatory burden, and in severe cases, inducing heart failure. Furthermore, long-term pleural and peritoneal effusion can cause significant albumin loss and electrolyte imbalance, further exacerbating hypoproteinemia, hyponatremia, and hypokalemia, creating a vicious cycle and accelerating disease progression.
[0004] Currently, the main clinical practice is to use thoracentesis or paracentesis to drain pleural and peritoneal effusions to relieve symptoms. However, during drainage, changes in patient position (such as supine, lateral, or sitting up) can cause dynamic changes in intrathoracic and abdominal pressure, affecting the distribution and flow of drainage fluid and making it difficult to control the drainage rate steadily. If the drainage rate is too fast, serious complications may occur: rapid drainage of pleural effusion can lead to re-expansion of compressed lung tissue, causing re-expansion pulmonary edema; while rapid drainage of peritoneal effusion may induce hypotension or shock due to a sudden drop in abdominal pressure, visceral vasodilation, and reduced venous return. These risks not only threaten patient safety but also increase the difficulty of clinical nursing, making drainage volume monitoring, condition assessment, and timing of intervention challenging.
[0005] Since drainage fluid is a liquid with a density similar to water, its volume in milliliters can be calculated by measuring its weight, allowing for real-time monitoring of drainage rate and volume. Therefore, developing a device that can dynamically monitor drainage fluid weight, calculate its volume in milliliters to monitor drainage rate and volume, and issue timely alarms in abnormal situations is of great significance for optimizing pleural and peritoneal effusion drainage management, reducing the risk of complications, and improving medical safety. This is also a pressing technical problem that needs to be solved in clinical practice. Summary of the Invention
[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a liquid weight monitoring and alarm device for drainage bags.
[0007] To achieve the above objectives, the present invention adopts the following technical solution:
[0008] A liquid weight monitoring alarm device for a drainage bag includes a fixed frame, an L-shaped slide rail fixed to the outer wall of the fixed frame, a slider slidably connected to the inner wall of the L-shaped slide rail, a control panel fixed to the outer wall of the slider, a set of guide plates fixed to the outer wall of the control panel, the guide plates slidably connected to the two outer walls of the L-shaped slide rail, and a set of plugs fixed to the two outer walls of the fixed frame, with limit stops inserted into the inner walls of the plugs.
[0009] As a further embodiment of this utility model: an internal threaded sleeve is fixed to the outer wall of the fixed frame, and a screw is connected to the inner wall of the internal threaded sleeve by a thread, and an extrusion plate is fixed to the outer wall of the bottom of the screw.
[0010] As a further improvement of this utility model: a tension sensor is fixed to the bottom outer wall of the control panel, and a hook is provided at the traction end of the tension sensor, and the tension sensor and the control panel are electrically connected.
[0011] As a further improvement of this utility model: a battery is provided on the inner wall of the control panel, and a charging interface is provided on the outer wall of the control panel.
[0012] As a further improvement of this utility model, a friction pad is fixed to the inner wall of the fixed frame.
[0013] As a further improvement of this utility model, a handle is fixed to the top outer wall of the control panel.
[0014] As a further improvement of this utility model: the outer wall of the control panel is provided with control buttons and a buzzer, and the control buttons and the buzzer are electrically connected to the control panel respectively.
[0015] The beneficial effects of this utility model are as follows:
[0016] 1. The drainage bag can be hung on the traction end of the tension sensor via a hook. The tension sensor can then monitor the weight of the fluid in the drainage bag in real time. The weight data monitored by the tension sensor will be transmitted to the control panel in real time, and the control panel will display the data on the screen for easy viewing by medical staff. At the same time, medical staff can adjust the weight alarm threshold through the control buttons. When the weight of the fluid inside the drainage bag exceeds the set value, the control panel will activate a buzzer to sound, thereby reminding medical staff to check in time.
[0017] 2. Medical staff insert the opening on one side of the fixing frame into the corresponding position on the outer wall of the bed board. Then, by sliding the slider connected to the inner wall of the L-shaped slide rail through the pulley, the entire control panel is slid to an angle where the fixing frame is perpendicular to the bed board. Then, the limit stop bar on one side of the guide plate is pushed forward, so that the limit stop bar is supported at the bottom of the corresponding guide plate, thus supporting and limiting the entire control panel. This allows the tension sensor to be fixed vertically on one side of the bed board, so that the tension sensor can accurately weigh the drainage bag.
[0018] 3. When it is necessary to fix the monitoring and alarm device to the outer wall of the bed rail, first insert the fixing frame into the corresponding position on the outer wall of the bed rail, then turn the screw to clamp and fix the fixing frame to the outer wall of the bed rail through the compression plate. Then, medical staff slide the control panel to the same angle as the bed rail by sliding the slider connected to the inner wall of the L-shaped slide rail, so that the tension sensor can still be at a vertical angle with the bed board. Hang the drainage bag vertically at the bottom of the tension sensor, so that the monitoring and alarm device can be fixed on the bed board and bed rail according to the specific use needs, thereby improving the applicability of the monitoring and alarm device. Attached Figure Description
[0019] Figure 1 is a schematic diagram of a liquid weight monitoring alarm device for a drainage bag proposed in this utility model when it is fixed on a horizontal plane.
[0020] Figure 2 is a schematic diagram of the main structure of a liquid weight monitoring and alarm device for a drainage bag proposed in this utility model;
[0021] Figure 3 is a schematic diagram of the control panel structure of a liquid weight monitoring and alarm device for a drainage bag proposed in this utility model;
[0022] Figure 4 is a schematic diagram of the fixing frame structure of a liquid weight monitoring alarm device for a drainage bag proposed in this utility model;
[0023] Figure 5 is a schematic diagram of a liquid weight monitoring alarm device for a drainage bag proposed in this utility model when fixed in a vertical plane.
[0024] Figure 6 is a schematic diagram of the fixed frame of the liquid weight monitoring alarm device for the drainage bag proposed in this utility model, fixed in a vertical plane.
[0025] In the diagram: 1-Fixed frame, 2-Screw, 3-Bed board, 4-Control panel, 5-Control button, 6-Buzzer, 7-Hook, 8-Drainage bag, 9-Tension sensor, 10-Extrusion plate, 11-L-shaped slide rail, 12-Friction pad, 13-Internal threaded sleeve, 14-Charging interface, 15-Slider, 16-Guide plate, 17-Limit stop bar, 18-Plug, 19-Bed rail. Detailed Implementation
[0026] The technical solution of this patent will be further described in detail below with reference to specific embodiments.
[0027] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.
[0028] Example 1
[0029] A liquid weight monitoring and alarm device for a drainage bag, as shown in Figures 1-6, includes a fixed frame 1. An L-shaped slide rail 11 is fixed to the outer wall of the fixed frame 1. A slider 15 is slidably connected to the inner wall of the L-shaped slide rail 11. A control panel 4 is fixed to the outer wall of the slider 15. A set of guide plates 16 is fixed to the outer wall of the control panel 4. The guide plates 16 are slidably connected to the outer walls of both sides of the L-shaped slide rail 11. A set of plugs 18 are fixed to the outer walls of both sides of the fixed frame 1. A limit stop bar 17 is inserted into the inner wall of the plug 18.
[0030] The outer wall of the fixed frame 1 is fixed with an internal threaded sleeve 13, and the inner wall of the internal threaded sleeve 13 is connected to a screw 2 by a thread. The outer wall of the bottom of the screw 2 is fixed with an extrusion plate 10.
[0031] A tension sensor 9 is fixed to the bottom outer wall of the control panel 4. A hook 7 is provided at the traction end of the tension sensor 9. The tension sensor 9 and the control panel 4 are electrically connected.
[0032] A battery is installed on the inner wall of the control panel 4, and a charging interface 14 is installed on the outer wall of the control panel 4.
[0033] A friction pad 12 is fixed to the inner wall of the fixed frame 1;
[0034] A handle is fixed to the top outer wall of the control panel 4;
[0035] The outer wall of the control panel 4 is provided with control buttons 5 and a buzzer 6, which are electrically connected to the control panel 4.
[0036] The bed board 3 and bed rail 19 shown in this embodiment are existing basic structures on hospital beds in the prior art. At the same time, the bed board 3 and bed rail 19 are only used for demonstration purposes in this embodiment. This monitoring and alarm device is not limited to use on hospital beds.
[0037] The drainage bag 8 can be hung on the traction end of the tension sensor 9 via the hook 7, so that the weight of the fluid in the drainage bag 8 can be monitored in real time by the tension sensor 9. The weight data monitored by the tension sensor 9 will be transmitted to the control panel 4 in real time, and the control panel 4 will display the data on the screen for medical staff to view. At the same time, medical staff can adjust the weight alarm threshold through the control button 5. When the weight of the fluid inside the drainage bag 8 exceeds the set value, the control panel 4 will control the buzzer 6 to sound, thereby reminding medical staff to check in time.
[0038] The control panel 4 has a built-in battery, which can be charged by medical staff through the charging port on one side of the control panel 4 to ensure the normal operation of the device.
[0039] Medical staff insert the opening on one side of the fixing frame 1 into the corresponding position on the outer wall of the bed board 3. Then, by sliding the slider 15 connected to the inner wall of the L-shaped slide rail 11 through the pulley, the control panel 4 is slid to an angle where one side of the fixing frame 1 is perpendicular to the bed board 3. Then, the limit stop 17 on one side of the guide plate 16 is pushed forward, so that the limit stop 17 is supported at the bottom of the corresponding guide plate 16, thus supporting and limiting the control panel 4. Then, the medical staff turns the screw 2, so that the compression plate 10 is pressed against the outer wall of the bed board 3, thereby clamping and fixing the fixing frame 1 to one side of the bed board 3, so that the tension sensor 9 can be vertically fixed to one side of the bed board 3, so that the tension sensor 9 can accurately weigh the drainage bag 8. Then, the drainage bag 8 is hung on the hook 7.
[0040] When it is necessary to fix the monitoring and alarm device to the outer wall of the bed rail 19, first insert the fixing frame 1 into the corresponding position on the outer wall of the bed rail 19, then rotate the screw 2, and use the compression plate 10 to clamp and fix the fixing frame 1 to the outer wall of the bed rail 19. Then, medical staff slide the control panel 4 to the angle where the fixing frame 1 is horizontal with the bed rail 19 by sliding the slider 15 connected to the inner wall of the L-shaped slide rail 11. This allows the tension sensor 9 to remain at a vertical angle with the bed board 3. The drainage bag 8 is then hung vertically at the bottom of the tension sensor 9, so that the monitoring and alarm device can be fixed to the bed board 3 and bed rail 19 of the hospital bed according to specific usage needs, thereby improving the applicability of the monitoring and alarm device.
[0041] Working principle: The drainage bag 8 can be hung on the traction end of the tension sensor 9 via the hook 7, so that the tension sensor 9 can monitor the weight of the fluid in the drainage bag 8 in real time. The weight data monitored by the tension sensor 9 will be transmitted to the control panel 4 in real time. The control panel 4 will display the data on the screen for medical staff to view. At the same time, medical staff can adjust the weight alarm threshold through the control button 5. When the weight of the fluid inside the drainage bag 8 exceeds the set value, the control panel 4 will control the buzzer 6 to sound, thereby reminding medical staff to check in time.
[0042] Medical staff insert the opening on one side of the fixing frame 1 into the corresponding position on the outer wall of the bed board 3. Then, by sliding the slider 15 connected to the inner wall of the L-shaped slide rail 11 through the pulley, the control panel 4 is slid to an angle where the side of the fixing frame 1 is perpendicular to the bed board 3. Then, the limit stop 17 on the side of the guide plate 16 is pushed forward, so that the limit stop 17 is supported at the bottom of the corresponding guide plate 16. Then, the medical staff turns the screw 2, so that the compression plate 10 is pressed against the outer wall of the bed board 3, thereby clamping and fixing the fixing frame 1 to one side of the bed board 3, so that the tension sensor 9 can be vertically fixed to one side of the bed board 3.
[0043] When it is necessary to fix the monitoring and alarm device to the outer wall of the bed rail 19, first insert the fixing frame 1 into the corresponding position on the outer wall of the bed rail 19, then rotate the screw 2, and use the compression plate 10 to clamp and fix the fixing frame 1 to the outer wall of the bed rail 19. Then, the medical staff slide the control panel 4 to the side of the fixing frame 1 at an angle that is horizontal with the bed rail 19 by sliding the slider 15 connected to the inner wall of the L-shaped slide rail 11, so that the tension sensor 9 can still be at a vertical angle with the bed board 3.
[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A liquid weight monitoring and alarm device for a drainage bag, comprising a fixing frame (1), characterized in that, The outer wall of the fixed frame (1) is fixed with an L-shaped slide rail (11), the inner wall of the L-shaped slide rail (11) is slidably connected with a slider (15), the outer wall of the slider (15) is fixed with a control panel (4), the outer wall of the control panel (4) is fixed with a set of guide plates (16), the guide plates (16) are slidably connected to the outer walls of both sides of the L-shaped slide rail (11), the outer walls of both sides of the fixed frame (1) are respectively fixed with a set of plugs (18), the inner wall of the plugs (18) is inserted with a limit stop bar (17); the outer wall of the fixed frame (1) is fixed with an internal thread sleeve (13), the inner wall of the internal thread sleeve (13) is connected with a screw (2) by a thread, and the bottom outer wall of the screw (2) is fixed with an extrusion plate (10).
2. The liquid weight monitoring and alarm device for a drainage bag according to claim 1, characterized in that, A tension sensor (9) is fixed to the bottom outer wall of the control panel (4). A hook (7) is provided at the traction end of the tension sensor (9). The tension sensor (9) and the control panel (4) are electrically connected.
3. The liquid weight monitoring and alarm device for a drainage bag according to claim 2, characterized in that, The inner wall of the control panel (4) is provided with a storage battery, and the outer wall of the control panel (4) is provided with a charging interface (14).
4. The liquid weight monitoring and alarm device for a drainage bag according to claim 1, characterized in that, The inner wall of the fixed frame (1) is fixed with a friction pad (12).
5. A liquid weight monitoring and alarm device for a drainage bag according to claim 3, characterized in that, The control panel (4) has a handle fixed to the top outer wall.
6. A liquid weight monitoring and alarm device for a drainage bag according to claim 5, characterized in that, The outer wall of the control panel (4) is provided with control buttons (5) and a buzzer (6), and the control buttons (5) and the buzzer (6) are electrically connected to the control panel (4).