A drainage fluid level monitoring device
By introducing a floating component and a ball bearing structure into the drainage fluid level monitoring device, the problems of inaccurate detection and motion interference caused by sliding friction are solved, achieving more efficient and accurate level monitoring.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MEI HOSPITAL UNIV OF CHINESE ACAD OF SCI
- Filing Date
- 2025-09-04
- Publication Date
- 2026-06-26
AI Technical Summary
Existing drainage fluid level monitoring devices suffer from high friction between the sliding trigger component and the drainage bag, leading to inaccurate detection and easy motion interference, especially when precise cerebrospinal fluid flow is required, resulting in a failure to provide timely alerts.
A drainage fluid level monitoring device was designed, which uses a floating component including a sliding plate, a limiting component, a guide component, and a ball bearing. By cooperating with the limiting rail and the ball bearing, sliding friction is reduced, and rolling friction is used to replace sliding friction. When the fluid level is too high, an alarm is triggered by an electromagnetic button.
It improves the accuracy and reliability of drainage fluid level detection, reduces friction, avoids motion interference, ensures normal operation even in the presence of impurities, and achieves more efficient level monitoring.
Smart Images
Figure CN224416198U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drainage fluid monitoring technology, specifically a drainage fluid level monitoring device. Background Technology
[0002] Currently, the disparity between medical staff and patients in clinical practice is significant, leading to night shift nurses often having to care for multiple patients, which in turn causes nurse-patient conflicts. Existing methods for reminding medical staff to change drainage bags rely on markings on the outside of the bag or on nurses or patients subjectively judging changes in the fluid level. However, doctors require that only a specified volume of fluid be drained from the patient's chest cavity, especially for cerebrospinal fluid drainage, which requires even greater precision and necessitates timely observation of the target markings by medical staff.
[0003] A few existing methods utilize floats placed in the drainage fluid. As the drainage fluid increases, the float rises, causing it to pull a trigger mechanism that activates an alarm. Personnel can then determine the drainage fluid level by listening to the alarm. Although this method facilitates the detection of drainage fluid and reduces the workload of medical staff, the triggering component usually requires sliding. If there is significant friction between the trigger and the drainage bag, motion interference can easily occur, making effective detection impossible.
[0004] To address this issue, we designed a drainage fluid level monitoring device. Utility Model Content
[0005] The purpose of this invention is to provide a drainage fluid level monitoring device to solve the problems mentioned in the background art.
[0006] To solve the above-mentioned technical problems, this utility model provides a drainage fluid level monitoring device, including a drainage bag body. A detection groove is fixedly installed on the inner side wall of the drainage bag body. An electromagnetic button is provided on the top wall of the detection groove. A floating component for triggering the electromagnetic button is also movably arranged in the detection groove. A limiting rail is opened in the detection groove and is connected to the inside of the detection groove. A limiting member is provided on the side of the floating component. A guide member is provided on one side of the limiting member. A ball is rotatably arranged on the other side of the guide member. The ball is rotatably connected to the limiting rail.
[0007] The floating assembly includes a slide plate, which is slidably disposed within the detection groove. The side of the limiting member away from the telescopic rod is fixedly connected to the slide plate. A striker is provided on the top of the slide plate, which cooperates with and abuts against an electromagnetic button. A rope is provided on one side of the slide plate, and a float is provided at the other end of the rope. An alarm is provided on the top of the drainage bag, and the electromagnetic button is electrically connected to the alarm. The density of the float is less than the density of the patient's drainage fluid.
[0008] Furthermore, the number of limiting rails is three, and the three limiting rails are respectively opened on three sides away from the opening of the detection groove. The number of limiting members, guide members and balls corresponds to the number of limiting rails.
[0009] Furthermore, the guide member has an installation cavity and a fixing port respectively inside and on one side. The installation cavity is connected to the fixing port. The ball is rotatably disposed in the installation cavity and the fixing port, and part of it is located outside the fixing port.
[0010] Furthermore, a gap is left between the limiting member and the guide member, and a support spring is installed thereon, the outer surface of which is covered with a waterproof membrane.
[0011] Furthermore, a telescopic rod is provided between the limiting member and the guide member, and the support spring is movably sleeved on the telescopic rod.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting up a floating component, the drainage liquid level in the drainage bag can be easily detected. At the same time, with the alarm, it can sound to remind personnel to drain the liquid when the liquid level is too high. Through the setting of the limiting rail, limiting component, guide component and ball, the ball can be driven by the floating component to roll in the limiting rail, which can change the sliding friction of the slide plate in the detection groove to rolling friction, reduce the friction force, so that the slide plate can slide smoothly, avoid the problem of motion interference, and improve the detection effect.
[0013] Compared with the prior art, the beneficial effects of this utility model are: if there are impurities in the drainage fluid, and the impurities will adhere to the inner wall of the limiting rail, the ball will react when it comes into contact with the impurities, pushing the guide to compress the support spring and move closer along the direction of the telescopic rod extension end, so that the ball can directly crush the impurities, avoiding the problem of ball movement interference due to the obstruction of impurities, and further improving the detection effect. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural schematic diagram of the internal half-section of this utility model;
[0015] Figure 2 This is a three-dimensional structural diagram of the exterior of this utility model;
[0016] Figure 3 This is a three-dimensional structural schematic diagram of the internal half-section of the limiting rail of this utility model;
[0017] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle.
[0018] In the diagram: 1. Drainage bag body; 2. Detection groove; 3. Electromagnetic button; 4. Limit rail; 5. Limiting component; 6. Guide component; 7. Ball bearing; 8. Mounting cavity; 9. Fixing port; 10. Support spring; 11. Telescopic rod; 12. Slide plate; 13. Strike pin; 14. Rope; 15. Float; 16. Alarm. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Please see Figure 1-4 This utility model provides a technical solution: a drainage fluid level monitoring device, including a drainage bag body 1, a detection groove 2 fixedly installed on the inner side wall of the drainage bag body 1, an electromagnetic button 3 provided on the top wall of the inner side of the detection groove 2, a floating component for triggering the electromagnetic button 3 movably installed in the detection groove 2, a limiting rail 4 opened in the detection groove 2, the limiting rail 4 being connected to the inside of the detection groove 2, a limiting member 5 provided on the side of the floating component, a guide member 6 provided on one side of the limiting member 5, a ball bearing 7 rotatably provided on the other side of the guide member 6, the ball bearing 7 being rotatably connected in the limiting rail 4, an installation cavity 8 and a fixing port 9 respectively opened inside and on one side of the guide member 6, the installation cavity 8 being connected to the fixing port 9, the ball bearing 7 being rotatably installed in the installation cavity 8 and the fixing port 9, and partly located outside the fixing port 9;
[0021] The floating assembly includes a slide plate 12, which is slidably disposed in the detection groove 2. The side of the limiting member 5 away from the telescopic rod 11 is fixedly connected to the slide plate 12. A striker 13 is provided on the top of the slide plate 12, which cooperates with the electromagnetic button 3 to resist each other. A rope 14 is provided on one side of the slide plate 12, and a float 15 is provided at the other end of the rope 14. An alarm 16 is provided on the top of the drainage bag 1. The electromagnetic button 3 is electrically connected to the alarm 16. The density of the float 15 is less than the density of the patient's drainage fluid.
[0022] In practice, the drainage tube is inserted into the patient's wound and onto the drainage bag 1, ensuring that the wound is connected to the bag. This facilitates the drainage of bodily fluids into the bag. As the drainage fluid in the bag increases, the float 15 floats on top of the fluid. When the fluid exceeds the top of the detection tank 2, the float 15 pulls the rope 14 to slide the slide plate 12 upwards in the detection tank 2 until the striker 13 contacts the electromagnetic button 3. This causes the electromagnetic button 3 to send an electrical signal to the alarm 16, which then sounds. Medical staff can use the alarm 16 to determine the fluid level and drain the fluid promptly. During this process, the slide plate 12 moves the limiting component 5 and the guide component 6, while the ball bearing 7 rolls within the limiting rail 4. This changes the sliding friction of the slide plate 12 in the detection tank 2 to rolling friction, reducing friction and allowing the slide plate 12 to slide smoothly. This avoids motion interference and improves the detection effect.
[0023] Furthermore, it should be noted that the presence of the ball bearing 7 creates a gap between the slide plate 12 and the detection groove 2. Since the contact area between the ball bearing 7 and the limiting rail 4 is much smaller than the contact area between the slide plate 12 and the detection groove 2, and the ball bearing 7 can change the sliding friction of the slide plate 12 to rolling friction, experiments show that the buoyancy required to pull the slide plate 12 after the improvement is only 20% of the original buoyancy. Compared with the existing technology, the failure rate is lower and the monitoring is more accurate.
[0024] See Figure 1-4 There are three limiting rails 4, which are respectively set on the three sides away from the opening of the detection groove 2. The number of limiting parts 5, guide parts 6 and ball bearings 7 are all corresponding to the number of limiting rails 4. The setting of three limiting rails 4 can make the sliding plate 12 change to rolling friction on three sides, thereby further reducing the friction and making the sliding plate 12 move more smoothly.
[0025] See Figure 1-4 There is a gap between the limiting member 5 and the guide member 6, and a support spring 10 is installed thereon. The outer surface of the support spring 10 is covered with a waterproof membrane.
[0026] In specific implementation, based on the above implementation, if there are impurities in the drainage fluid and the impurities will adhere to the inner wall of the limiting rail 4, the ball 7 will have a reaction force when it comes into contact with the impurities, pushing the guide 6 to compress the support spring 10 and approach the limiting member 5. This allows the ball 7 to directly crush the impurities, avoiding the problem of ball 7 movement interference due to the obstruction of impurities, and further improving the detection effect.
[0027] See Figure 1-4A telescopic rod 11 is also provided between the limiting member 5 and the guide member 6, and the support spring 10 is movably sleeved on the telescopic rod 11. This allows the guide member 6 to move only along the telescopic end of the telescopic rod 11, thereby avoiding the problem of movement deviation.
[0028] Working principle: Before use, all electrical appliances inside and outside the drainage bag 1 need to be connected to an external power source, or a small-capacity battery pack needs to be installed in an area outside the drainage bag 1 that does not obstruct other components, in order to reduce weight and save costs. Then, the battery pack is connected to the electrical appliances through wiring. It is also necessary to avoid the wiring from getting tangled due to the movement of the components. Wiring needs to be buried and planned and organized to provide power to the electrical appliances, thereby ensuring their normal operation and switching. Since connecting the electrical appliances to an external power source or setting up a battery pack for power supply are existing technologies and are not problems that need to be solved in the background technology of this manual, they will not be explained in detail.
[0029] In use, the drainage tube is inserted into the patient's wound and onto the drainage bag 1, ensuring that the wound is connected to the bag. This facilitates the drainage of bodily fluids into the bag. As the drainage fluid in the bag increases, the float 15 floats on top of the fluid. When the fluid exceeds the top of the detection tank 2, the float 15 pulls the rope 14 to slide the slide plate 12 upwards in the detection tank 2 until the striker 13 contacts the electromagnetic button 3. This causes the electromagnetic button 3 to send an electrical signal to the alarm 16, which then sounds. Medical staff can use the sound of the alarm 16 to determine the fluid level and drain the fluid promptly. During this operation, the slide plate 12 moves the limiting component 5 and the guide component 6, while the ball bearing 7 rolls within the limiting rail 4. This changes the sliding friction of the slide plate 12 in the detection tank 2 to rolling friction, reducing friction and allowing the slide plate 12 to slide smoothly. This avoids motion interference and improves the detection effect.
[0030] Furthermore, if there are impurities in the drainage fluid, and these impurities adhere to the inner wall of the limiting rail 4, the ball bearing 7 will react when it comes into contact with the impurities, pushing the guide 6 to compress the support spring 10 and move closer to the limiting member 5 along the direction of the telescopic end of the telescopic rod 11. This allows the ball bearing 7 to directly crush the impurities, avoiding interference in the movement of the ball bearing 7 due to the obstruction of the impurities, and further improving the detection effect.
Claims
1. A drainage liquid level monitoring device, comprising a drainage bag body (1), a detection groove (2) is fixedly installed on the inner side wall of the drainage bag body (1), characterized in that, An electromagnetic button (3) is provided on the top wall of the detection groove (2). A floating component for triggering the electromagnetic button (3) is also movably provided in the detection groove (2). A limiting rail (4) is provided in the detection groove (2). The limiting rail (4) is connected to the inside of the detection groove (2). A limiting member (5) is provided on the side of the floating component. A guide member (6) is provided on one side of the limiting member (5). A ball bearing (7) is rotatably provided on the other side of the guide member (6). The ball bearing (7) is rotatably connected in the limiting rail (4). The floating assembly includes a slide plate (12), which is slidably disposed in the detection groove (2), and the side of the limiting member (5) away from the telescopic rod (11) is fixedly connected to the slide plate (12). A striker (13) is provided on the top of the slide plate (12), and the striker (13) cooperates with the electromagnetic button (3). A rope (14) is provided on one side of the slide plate (12), and a float (15) is provided at the other end of the rope (14). An alarm (16) is provided on the top of the drainage bag (1), and the electromagnetic button (3) is electrically connected to the alarm (16). The density of the float (15) is less than the density of the patient's drainage fluid.
2. The drainage fluid level monitoring device as described in claim 1, characterized in that: The number of the limiting rails (4) is three, and the three limiting rails (4) are respectively opened on three sides away from the opening of the detection groove (2). The number of the limiting member (5), the guide member (6) and the ball (7) are all corresponding to the number of the limiting rails (4).
3. The drainage fluid level monitoring device as described in claim 1, characterized in that: The guide (6) has an installation cavity (8) and a fixing port (9) on its interior and one side, respectively. The installation cavity (8) is connected to the fixing port (9). The ball (7) is rotatably disposed in the installation cavity (8) and the fixing port (9), and part of it is located outside the fixing port (9).
4. The drainage fluid level monitoring device as described in claim 1, characterized in that: There is a gap between the limiting member (5) and the guide member (6), and a support spring (10) is installed thereon. The outer surface of the support spring (10) is covered with a waterproof membrane.
5. The drainage fluid level monitoring device as described in claim 4, characterized in that: A telescopic rod (11) is also provided between the limiting member (5) and the guide member (6), and the support spring (10) is movably sleeved on the telescopic rod (11).