A urine collection bag for bladder irrigation in patients with urinary tract infections
By setting an observation window and scale lines on the urine collection bag, combined with a gravity sensing linkage structure of spring and conductive block, the problems of inaccurate measurement and insufficient early warning of urine collection bags are solved, realizing automatic early warning and safe flow control, and improving the nursing safety and operation convenience of bladder irrigation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING YOUAN HOSPITAL CAPITAL MEDICAL UNIV
- Filing Date
- 2025-09-04
- Publication Date
- 2026-05-26
AI Technical Summary
Existing urine collection bags suffer from inaccurate waste liquid monitoring and recording, lack of full-liquid warning, unsafe pipeline control, and insufficient adaptability and operational efficiency, which affect the effectiveness of bladder irrigation and the safety of nursing care.
A urine collection bag with an observation window and scale lines was designed. It combines a gravity sensing linkage structure with springs, metal conductors and conductive blocks to achieve automatic early warning. The inlet and outlet pipelines are controlled by a one-way valve to improve measurement accuracy and safety.
It achieves accurate waste liquid measurement and automatic early warning, reduces the risk of retrograde infection, simplifies the operation process, and improves nursing efficiency and patient comfort.
Smart Images

Figure CN224269847U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of urine collection bag technology, specifically a urine collection bag for bladder irrigation in urinary patients. Background Technology
[0002] Bladder irrigation is an important clinical treatment in urology, mainly used to remove blood clots, mucus, bacteria, and other foreign bodies from the bladder, preventing urinary tract infections and catheter obstruction. It is especially suitable for patients after bladder surgery, those with long-term indwelling catheters, or those with urinary tract bleeding. During irrigation, the urine collection bag, as the core component for collecting waste fluid, directly affects the irrigation effect and the safety of nursing care.
[0003] The traditional urine collection bags currently used in clinical practice have the following problems:
[0004] Inconvenient monitoring and recording of waste fluid: Traditional urine collection bags mostly use external graduation lines. Due to the light transmittance of the bag material, expansion and deformation, and the observation angle, nursing staff have difficulty accurately reading the amount of waste fluid, resulting in deviations in the recording of flushing fluid inflow and outflow, which affects the judgment of the patient's bladder function recovery and bleeding status.
[0005] Lack of full-volume warning: The urine collection bag requires manual and regular checks of the fluid level. If the waste fluid reaches the upper limit of the capacity and is not disposed of in time, it is easy to cause reflux into the bladder or leakage and contamination, increasing the risk of retrograde infection, especially for patients at night or in intensive care, which poses a potential nursing oversight.
[0006] Insufficient pipeline control and safety: Some urine collection bags lack independent control valves for inlet and outlet pipelines, or the valves have poor sealing, making them prone to leakage during flushing. At the same time, traditional open-loop drainage operations require frequent contact with pipeline interfaces, increasing the probability of iatrogenic infection.
[0007] Adaptability and operational efficiency issues: The existing urine collection bags have poor compatibility with bladder irrigation devices (such as three-lumen catheters and irrigation fluid bottles), and the tubing is not securely fixed and is prone to falling off; moreover, waste fluid discharge requires manual emptying, which is cumbersome and increases the workload of nursing staff.
[0008] Therefore, in order to meet the clinical needs of bladder irrigation in urology patients, there is an urgent need to design a urine collection bag with accurate measurement, automatic early warning, safe flow control and convenient operation, so as to improve the safety and nursing efficiency of irrigation treatment. Summary of the Invention
[0009] (a) Technical problems to be solved
[0010] To address the shortcomings of existing technologies, this invention provides a urine collection bag for bladder irrigation in urinary patients, which solves the problems mentioned in the background section.
[0011] (II) Technical Solution
[0012] To achieve the above objectives, this utility model provides the following technical solution: a urine collection bag for bladder irrigation in urinary patients, comprising a lifting arm and a urine collection bag. A hook is fixedly connected to the middle of the upper surface of the lifting arm, a warning light is provided in the middle of one side of the lifting arm, a power supply is provided inside the lifting arm, and sliding grooves are provided on both side walls of the lifting arm. A conductive block is fixedly connected to one side of the bottom wall of the sliding groove, and a spring is fixedly connected to the other side of the bottom wall of the sliding groove. An inlet pipe is fixedly connected to one side of the upper surface of the urine collection bag, and a drain pipe is fixedly connected to the middle of the lower surface of the urine collection bag.
[0013] Optionally, an observation window is provided on one side of the urine collection bag, and the inside of the observation window is provided with scale lines for easy observation by personnel.
[0014] Optionally, a metal conductor is inserted into the top wall of the urine collection bag, and the metal conductor passes through the urine collection bag and is fixedly connected to the spring.
[0015] Optionally, the number of conductive blocks is two, one of which is electrically connected to the power supply via a wire, and the other of which is electrically connected to the warning light and the power supply via a wire.
[0016] Optionally, the number of warning lights is three, and the three warning lights are connected in series by wires.
[0017] Optionally, a first check valve is provided in the middle of the surface of the inlet pipe, and a second check valve is provided in the middle of the surface of the outlet pipe.
[0018] (III) Beneficial Effects
[0019] This invention provides a urine collection bag for bladder irrigation in urinary patients, which has the following beneficial effects:
[0020] Improved accuracy of waste fluid measurement: The design of the observation window and built-in scale reduces the interference of bag deformation and light refraction on the reading. Nursing staff can read the amount of flushing waste fluid intuitively and accurately, ensuring accurate recording of intake and output balance, and providing reliable data support for assessing the effect of bladder flushing, bleeding and renal function recovery.
[0021] Automatic full-volume warning: With the help of a gravity-sensing linkage structure of spring, metal conductor and conductive block, when the waste liquid in the urine collection bag reaches the preset capacity, the metal conductor contacts the conductive block to trigger the warning light to flash. It can promptly remind nursing staff to handle the situation without the need for continuous manual monitoring, effectively avoiding waste liquid overflow or reflux into the bladder, reducing the risk of retrograde infection and environmental pollution, and is especially suitable for unattended scenarios at night or for critically ill patients.
[0022] Enhanced pipeline control safety: The inlet and outlet pipes are equipped with first and second check valves, respectively, which can independently control the inflow rate of flushing fluid and the discharge of waste fluid, preventing liquid leakage or backflow during flushing. The sealing design of the check valves reduces the exposure of pipeline interfaces, lowers the probability of iatrogenic infection, and simplifies the flushing start and stop operation, thereby improving nursing safety.
[0023] Optimize clinical operation efficiency: The hook structure allows the urine collection bag to be stably suspended on the hospital bed or infusion stand, adapting to different clinical scenarios; the one-way valve design of the drainage tube, combined with the scale line, can achieve accurate drainage and measurement simultaneously, reducing the number of manual pouring times and saving nursing time; the overall structure is highly compatible with bladder irrigation devices (such as three-lumen catheters), the tubing connection is stable, reducing the risk of dislodgement and improving the convenience of nursing operations.
[0024] Improving patient comfort and treatment experience: Through automatic warning and anti-reflux design, the frequency of bed unit replacement due to overflow of waste fluid is reduced, and the discomfort caused by patient movement or operation is reduced; precise waste fluid measurement helps doctors dynamically adjust the irrigation plan, avoid over-irrigation or under-irrigation, and promote the recovery of bladder function in patients. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the structure of this utility model;
[0026] Figure 2 This is a cross-sectional view of the present invention;
[0027] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle.
[0028] In the diagram: 1. boom; 2. urine collection bag; 3. hook; 4. warning light; 5. power supply; 6. chute; 7. conductive block; 8. spring; 9. inlet pipe; 10. outlet pipe; 11. observation window; 12. scale line; 13. metal conductor; 14. first check valve; 15. second check valve. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0030] Please see Figures 1 to 3 This utility model provides a technical solution:
[0031] A urine collection bag for bladder irrigation in urinary patients includes a lifting arm 1 and a urine collection bag 2. A hook 3 is fixedly connected to the middle of the upper surface of the lifting arm 1, facilitating the hanging of the urine collection bag 2. Three warning lights 4 are located on the middle of one side of the lifting arm 1, connected in series by a wire. A power supply 5 is installed inside the lifting arm 1. Slide grooves 6 are formed on both side walls of the lifting arm 1. Two conductive blocks 7 are fixedly connected to one side of the bottom wall of the slide groove 6. One conductive block 7 is electrically connected to the power supply 5 via a wire, and the other conductive block 7 is electrically connected to both the warning light 4 and the power supply 5 via a wire. A spring 8 is fixedly connected to the other side of the bottom wall of the slide groove 6. A metal conductor 13 is inserted into the top wall of the urine collection bag 2, passing through the urine collection bag 2 and fixedly connected to the spring 8. With the arrangement of spring 8, slide 6, metal conductor 13, power supply 5, and warning light 4, when the urine inside the urine collection bag 2 reaches a certain amount, the urine collection bag 2 presses down on spring 8 due to gravity, until the metal conductor 13 contacts the conductive block 7, so that the warning light 4 and the power supply 5 form a closed circuit. The warning light 4 flashes to alert personnel that the urine collection bag 2 is about to be full. An inlet pipe 9 is fixedly connected to one side of the upper surface of the urine collection bag 2, and a drain pipe 10 is fixedly connected to the middle of the lower surface of the urine collection bag 2. A first one-way valve 14 is set in the middle of the surface of the inlet pipe 9, and a second one-way valve 15 is set in the middle of the surface of the drain pipe 10. An observation window 11 is opened on one side of the urine collection bag 2. The observation window 11 has a scale line 12 for easy observation by personnel. The observation window 11 and the scale line 12 make it easy for personnel to observe the amount of urine inside the urine collection bag.
[0032] In practical use, medical staff first suspend the urine collection bag 2 at a suitable height using the hook 3 on the boom 1. Then, they connect the inlet tube 9 to the patient's catheter and open the first one-way valve 14 to allow urine to flow smoothly into the urine collection bag 2. Through the observation window 11 and internal scale lines 12 on one side of the urine collection bag 2, medical staff can visually read the urine volume for accurate recording. As the urine in the urine collection bag 2 gradually increases, its increased gravity compresses the springs 8 in the slide grooves 6 on both sides of the boom 1, causing the metal conductor 13 to move downwards. When the urine volume reaches the preset warning value, the metal conductor 13 contacts the two conductive blocks 7 at the bottom of the slide groove 6, forming a closed circuit between the power supply 5, the warning light 4, and the conductive blocks 7. The three series-connected warning lights 4 flash synchronously to remind medical staff to handle the situation promptly. At this time, medical staff can close the first one-way valve 14 to stop the inlet flow, open the second one-way valve 15 on the drain tube 10 to drain the urine, and close the second one-way valve 15 and reopen the first one-way valve 14 to resume use. This device, through a combination of mechanical and electrical design, enables visualized monitoring and automatic early warning of urine output, effectively reducing the workload of nursing staff and improving the convenience and safety of clinical use.
[0033] In practical use, the circuit system of this urine collection bag works in conjunction with its mechanical structure to achieve an automatic early warning function. Its core working principle is as follows:
[0034] Circuit system composition and working logic
[0035] The integrated circuit system inside the boom 1 consists of a power supply 5 (such as a button battery or a small lithium battery), warning lights 4 (three LEDs connected in series), conductive blocks 7 (two metal contacts), and a metal conductor 13 (as a trigger switch). One conductive block is connected to the positive terminal of the power supply via a wire, and the other conductive block is connected in series with the warning lights and then to the negative terminal of the power supply, forming a complete control circuit. The metal conductor 13 vertically penetrates the top of the urine collection bag 2, with its upper end fixed to the spring 8 and its lower end suspended inside the urine collection bag. Under normal conditions, the spring tension keeps it separated from the conductive block 7, and the circuit is in an open state.
[0036] Urine volume monitoring and early warning triggering mechanism
[0037] When urine enters the urine collection bag 2 through the inlet pipe 9 (with the first one-way valve 14 preventing backflow), the overall weight of the urine collection bag increases as the liquid level rises, compressing the spring 8 downwards. The metal conductor 13 moves downwards synchronously with the urine collection bag. When the urine volume reaches a preset warning value (such as the upper limit mark on the scale 12), the lower end of the conductor contacts and conducts electricity to the two conductive blocks 7, closing the circuit. The power supply 5 supplies power to the warning light 4, and the three LEDs flash synchronously due to their series design, alerting medical staff to take timely action through light signals. During this process, the slide 6 provides vertical guidance for the metal conductor, ensuring accurate triggering.
[0038] Circuit protection and stability design
[0039] The power supply 5 uses a low-power power supply module, which, combined with the low-energy characteristics of the LED warning light, can extend the battery life; the contact part between the metal conductor 13 and the conductive block 7 is made of corrosion-resistant metal material to avoid the impact of urine vapor on conductivity; the elastic coefficient of the spring 8 is calibrated to ensure that the circuit is triggered precisely when the urine volume reaches the warning value, which avoids false alarms (such as fluctuations in a small amount of urine) and provides timely warnings before the liquid is full.
[0040] Human-computer interaction and operation collaboration
[0041] Medical staff can read the urine volume in real time through the scale line 12 on the observation window 11 and judge whether drainage is necessary based on the status of the warning light. During drainage, the first one-way valve 14 is closed to cut off the inlet fluid, and the second one-way valve 15 (drainage pipe 10) is opened to empty the urine. After the weight of the urine collection bag is reduced, the spring 8 returns to its original position, the metal conductor separates from the conductive block, the circuit is broken, and the warning light automatically turns off, realizing a closed-loop operation of "full liquid warning - manual drainage - automatic reset".
[0042] This design combines a simple and reliable series circuit with a mechanical trigger structure, enabling visualized monitoring and automatic early warning of urine output without the need for complex sensors or programmed control. It balances clinical practicality and cost control, and is especially suitable for the daily care of patients who require long-term indwelling catheters.
[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A urine collection bag for bladder irrigation in patients with urinary tract problems, comprising a boom (1) and a urine collection bag (2), characterized in that: A hook (3) is fixedly connected to the middle of the upper surface of the boom (1). A warning light (4) is provided in the middle of one side of the boom (1). A power supply (5) is provided inside the boom (1). Slide grooves (6) are provided on both sides of the boom (1). A conductive block (7) is fixedly connected to one side of the bottom wall of the slide groove (6). A spring (8) is fixedly connected to the other side of the bottom wall of the slide groove (6). An inlet pipe (9) is fixedly connected to one side of the upper surface of the urine collection bag (2). A drain pipe (10) is fixedly connected to the middle of the lower surface of the urine collection bag (2).
2. The urine collection bag for bladder irrigation in patients with urinary tract infections according to claim 1, characterized in that: The urine collection bag (2) has an observation window (11) on one side, and the observation window (11) has scale lines (12) inside for easy observation by personnel.
3. A urine collection bag for bladder irrigation in patients with urinary tract infections according to claim 1, characterized in that: A metal conductor (13) is inserted into the top wall of the urine collection bag (2), and the metal conductor (13) passes through the urine collection bag (2) and is fixedly connected to the spring (8).
4. A urine collection bag for bladder irrigation in patients with urinary tract infections according to claim 1, characterized in that: There are two conductive blocks (7), one of which is electrically connected to the power supply (5) via a wire, and the other of which is electrically connected to the warning light (4) and the power supply (5) via a wire.
5. A urine collection bag for bladder irrigation in patients with urinary tract infections according to claim 1, characterized in that: The number of warning lights (4) is three, and the three warning lights (4) are connected in series by wires.
6. A urine collection bag for bladder irrigation in patients with urinary tract infections according to claim 1, characterized in that: A first check valve (14) is provided in the middle of the surface of the inlet pipe (9), and a second check valve (15) is provided in the middle of the surface of the outlet pipe (10).