A waste liquid collecting and metering integrated device for home drainage tube nursing

Abstract

The present application relates to the technical field of medical devices, and discloses a waste liquid collecting and metering integrated device for home nursing of a drainage tube, comprising a waste liquid bag, a measuring cylinder, a drainage tube, an overflow pipe, a liquid collecting pipe and a cutting component. The measuring cylinder is arranged in a metering area and has a metering cavity. The drainage tube is arranged at one end of the measuring cylinder away from the waste liquid collecting area and is in communication with the metering cavity. The first end of the overflow pipe is in communication with the metering cavity, and the first end of the overflow pipe is located at the maximum metering scale of the measuring cylinder. Alternatively, the first end of the overflow pipe is located above the maximum metering scale of the measuring cylinder. The first end of the liquid collecting pipe is in communication with the waste liquid collecting cavity. The first liquid inlet of the cutting component is in communication with the second end of the overflow pipe, and the liquid outlet of the cutting component is in communication with the second end of the liquid collecting pipe. The cutting component is used for controlling the communication or blockage of the first liquid inlet and the liquid outlet. The device has the functions of waste liquid collecting and metering integration.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an integrated device for collecting and metering waste fluid in home drainage tube care. Background Technology

[0002] With the promotion of the concept of enhanced recovery after surgery (ERAS) and the deepening of the tiered medical system, patients' postoperative hospital stays are shortening, and it has become common for them to be discharged with drainage devices and recover at home. In the home setting, changes in the color, quality, and quantity of drainage fluid are the basis for doctors to judge the prognosis of the condition and prevent postoperative complications, creating a demand for patients or their families to collect and measure waste fluid in non-medical environments.

[0003] Existing clinically used drainage bags or bottles only have a single function of storing fluid. In practice, to accurately measure the waste fluid, it must first be poured from the collection container into a measuring cup for measurement, and then transferred to a storage container for disposal. This process is cumbersome and requires repeated pouring. During this process, the drainage fluid is prone to splashing or leaking, which not only contaminates the home environment but also increases the risk of the operator coming into contact with the patient's bodily fluids, posing a potential risk of cross-infection.

[0004] In summary, existing diversion devices do not have the function of integrating waste liquid collection and metering. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide an integrated device for collecting and metering waste liquid in home drainage tube care, which has the integrated function of collecting and metering waste liquid.

[0006] The objective of this invention is achieved through the following technical solution:

[0007] An integrated device for collecting and metering waste fluid in home drainage tube care includes:

[0008] A waste liquid bag, the waste liquid bag comprising a metering area and a waste liquid collection area arranged sequentially along its height direction, the waste liquid collection area having a waste liquid collection chamber;

[0009] A graduated cylinder, wherein the graduated cylinder is disposed in the measuring area, and the graduated cylinder has a measuring cavity;

[0010] A drainage tube is provided at one end of the measuring cylinder away from the waste liquid collection area, and the drainage tube is connected to the metering chamber;

[0011] An overflow tube, the first end of which is connected to the measuring chamber, and the first end of which is located at the maximum measuring scale of the measuring cylinder; or, the first end of which is located above the maximum measuring scale of the measuring cylinder.

[0012] A liquid collection pipe, the first end of which is connected to the waste liquid collection chamber;

[0013] The cut-off component has a first inlet connected to the second end of the overflow pipe and an outlet connected to the second end of the collecting pipe; the cut-off component is used to control the connection or blockage between the first inlet and the outlet.

[0014] Furthermore, the integrated device for collecting and metering waste fluid in home drainage tube care also includes:

[0015] A drain pipe, the first end of which is connected to the metering chamber and is located at the smallest metering graduation of the graduated cylinder; or, the first end of which is located below the smallest metering graduation of the graduated cylinder; the second end of which is connected to the second inlet of the cut-off component.

[0016] The cutting-off component is also used to control the connection or blockage between the second inlet and the outlet.

[0017] Furthermore, the graduated cylinder is made of a transparent material.

[0018] Furthermore, the measuring cylinder has a viewing section for allowing the user to visually observe the waste liquid inside the measuring chamber from outside the measuring cylinder.

[0019] Furthermore, an exhaust valve is provided at the end of the measuring cylinder away from the waste liquid collection area. The exhaust valve connects the measuring chamber to the external environment, and the gas flow direction of the exhaust valve is from the measuring chamber to the external environment.

[0020] Furthermore, a normally closed air inlet valve is provided at the end of the measuring cylinder away from the waste liquid collection area. The normally closed air inlet valve connects the measuring chamber with the external environment, and the gas flow direction of the normally closed air inlet valve is from the external environment to the measuring chamber.

[0021] Furthermore, the drainage tube is provided with a one-way valve and a pressure regulating air bag. The one-way valve is located inside the drainage tube, and the flow direction of the one-way valve is from the end of the drainage tube away from the measuring cylinder to the waste liquid bag. The pressure regulating air bag is located between the one-way valve and the waste liquid bag.

[0022] Furthermore, the waste liquid bag and the measuring cylinder are integrally integrated together.

[0023] Furthermore, the metering area has a connecting hole that extends through both sides of the metering area along the thickness direction of the waste liquid bag. The measuring cylinder passes through the connecting hole, and the outer wall of the measuring cylinder is integrally formed with the wall of the connecting hole.

[0024] Furthermore, the metering area is provided with a hanging opening; the integrated device for collecting and metering waste liquid in home drainage tube care also includes a weighing hanging device, which is used to pass through the hanging opening to suspend the waste liquid bag on an external support, and to weigh the waste liquid in the waste liquid bag in real time.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] 1. The waste liquid bag includes a metering area and a waste liquid collection area arranged sequentially along its height direction. The waste liquid collection area has a waste liquid collection chamber. A measuring cylinder is located in the metering area and has a metering chamber. A drain pipe is located at the end of the measuring cylinder away from the waste liquid collection area and is connected to the metering chamber. The first end of the overflow pipe is connected to the metering chamber and is located at the maximum metering scale of the measuring cylinder; or, the first end of the overflow pipe is located above the maximum metering scale of the measuring cylinder. The first end of the collection pipe is connected to the waste liquid collection chamber. The first inlet of the cutting-off component is connected to the second end of the overflow pipe, and the outlet of the cutting-off component is connected to the second end of the collection pipe. The cutting-off component is used to control the connection or blockage between the first inlet and the outlet. All the above components are integrated into the same waste fluid bag, concentrating the waste fluid measurement and collection functions, which originally required separate measurement cups and drainage bags, into a single device. Nursing staff no longer need to transfer waste fluid between different instruments or manage multiple independent switches. They can control the opening and closing of the overflow pipeline simply by operating the cut-off component. After the waste fluid measurement reading is completed in the measuring cylinder, the excess automatically flows into the waste fluid collection chamber through the overflow pipe and the collection pipe. Throughout the entire drainage cycle, the introduction, measurement, overflow, and collection of waste fluid are all completed within the closed pipeline system of the same waste fluid bag, without the need for external auxiliary instruments, thus realizing the integration of waste fluid collection and measurement functions.

[0027] 2. The first end of the overflow tube is connected to the measuring chamber, and the first end of the overflow tube is located at the maximum measuring scale of the measuring cylinder; or, the first end of the overflow tube is located above the maximum measuring scale of the measuring cylinder. The first end of the overflow tube being located at or above the maximum measuring scale of the measuring cylinder ensures that waste liquid continuing to flow into the measuring chamber after reaching the maximum measuring scale automatically enters the overflow tube through the first end and flows along the overflow path to the waste liquid collection chamber, preventing waste liquid from overflowing from the top of the measuring cylinder. The position of the first end of the overflow tube is fixed and does not change with the suspension angle of the waste liquid bag or the filling degree of the waste liquid collection chamber, providing nursing staff with stable and predictable overflow triggering conditions. Waste liquid only flows through the overflow tube when the liquid level in the measuring chamber exceeds the maximum measuring scale, and does not affect the stability of the liquid level and the accuracy of the reading under normal measuring conditions.

[0028] 3. The first inlet of the cutting-off component is connected to the second end of the overflow pipe, and the outlet of the cutting-off component is connected to the second end of the collecting pipe. The cutting-off component is used to control the connection or blockage between the first inlet and the outlet. The cutting-off component is connected to the overflow pipe through the first inlet and to the collecting pipe through the outlet, and performs the on / off control function between the two. When the cutting-off component is open, the waste liquid in the overflow pipe flows into the waste liquid collection chamber through the collecting pipe, and when it is blocked, it is stopped in the overflow pipe. This structural design concentrates the on / off control of the overflow pipe on a single component, the cutting-off component. Nursing staff do not need to install a separate clamping device on the overflow pipe or perform additional operations to open or close the overflow pipe, reducing the number of pipeline nodes on the waste liquid bag that require independent operation. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the integrated waste liquid collection and metering device for home drainage tube care according to the present invention.

[0030] Figure 2 for Figure 1 An enlarged view of point A shown;

[0031] Figure 3 for Figure 1 Side view;

[0032] Figure 4 for Figure 1 Partial sectional view;

[0033] Figure 5 for Figure 4 A magnified view of point B shown.

[0034] In the diagram: 1. Waste liquid bag; 11. Metering area; 111. Suspension opening; 12. Waste liquid collection area; 121. Waste liquid collection chamber; 2. Metering cylinder; 21. Metering chamber; 3. Drainage tube; 31. One-way valve; 32. Pressure regulating airbag; 4. Overflow tube; 5. Drainage tube; 6. Collection tube; 7. Cut-off component; 71. First inlet; 72. Outlet; 73. Second inlet; 8. Exhaust valve; 9. Normally closed air inlet valve. Detailed Implementation

[0035] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0036] It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is described as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] See Figures 1-5 The present invention provides an integrated device for collecting and measuring waste liquid in home drainage tube care, comprising: a waste liquid bag 1, a measuring cylinder 2, a drainage tube 3, an overflow tube 4, a collection tube 6, and a cutting component 7.

[0039] The waste liquid bag 1 includes a metering area 11 and a waste liquid collection area 12 arranged sequentially along its height direction. The waste liquid collection area 12 has a waste liquid collection cavity 121. The height direction refers to the spatial extension direction of the waste liquid bag 1 from the highest point to the lowest point along the direction of gravity when it is in normal use. In this direction, the metering area 11 is located above the waste liquid collection area 12, and the waste liquid collection cavity 121 is located at the bottom of the entire waste liquid bag 1.

[0040] The measuring cylinder 2 is located in the measuring area 11 and has a measuring chamber 21. Since the measuring cylinder 2 is located in the measuring area 11 and above the waste liquid collection area 12, the liquid level in the measuring chamber 21 can intuitively reflect the amount of waste liquid that has been drained, making it convenient for nursing staff to complete the reading and recording without touching the waste liquid. At the same time, the rigid wall of the measuring chamber 21 is not easily deformed by negative pressure or the gravity of the waste liquid, thus ensuring the accuracy and consistency of the measuring scale under different usage conditions.

[0041] The drainage tube 3 is located at the end of the measuring cylinder 2 away from the waste fluid collection area 12, and is connected to the measuring chamber 21. That is, the drainage tube 3 is connected to the upper part of the measuring cylinder 2. This position allows the waste fluid drained from the patient's body to flow downwards into the measuring chamber 21 along the vertical direction after entering the drainage tube 3, utilizing gravity-assisted drainage. Additionally, a spiral buffer section can be provided at the end of the drainage tube 3 away from the waste fluid collection area 12. The spiral buffer section provides elastic expansion and contraction allowance in the axial direction of the drainage tube 3 through its spiral shape. When the drainage tube 3 is subjected to external pulling force, the spiral buffer section absorbs the pulling force by increasing or decreasing the spacing between the spiral coils, thereby reducing the direct transmission of external pulling force to the connection between the drainage tube 3 and the patient's drainage catheter, and lowering the risk of the drainage tube 3 dislodging from the patient due to accidental pulling.

[0042] The first end of the overflow pipe 4 is connected to the measuring chamber 21, and the first end of the overflow pipe 4 is located at the maximum measuring scale of the measuring cylinder 2; or, the first end of the overflow pipe 4 is located above the maximum measuring scale of the measuring cylinder 2. Regardless of which of the two positional relationships is adopted, the connection between the first end of the overflow pipe 4 and the measuring chamber 21 is located on the side wall of the measuring cylinder 2, rather than at the top opening. This structure prevents waste liquid from splashing outward from the top of the measuring cylinder 2 or evaporating into the external environment, while ensuring that the overflow process is always completed in a closed pipeline system, reducing the possibility of odor emission and cross-infection. It is a protective measure to prevent the measuring cylinder 2 from overflowing (such as when nursing staff forget to empty it or the amount of waste liquid flowing out increases).

[0043] The first end of the collection tube 6 is connected to the waste fluid collection chamber 121. After the first end of the collection tube 6 is connected to the waste fluid collection chamber 121, the waste fluid collection chamber 121 becomes the only liquid storage container with a large volume in the entire device. Its internal space can accommodate all the waste fluid generated during the entire drainage cycle, so that caregivers do not need to frequently change the waste fluid bag 1 during the drainage process. They only need to dispose of the entire waste fluid collection and metering integrated device as disposable medical waste after a single drainage cycle, which simplifies the operation process of home care and reduces the risk of secondary pollution.

[0044] The first inlet 71 of the cut-off component 7 is connected to the second end of the overflow pipe 4, and the outlet 72 of the cut-off component 7 is connected to the second end of the collection pipe 6. The cut-off component 7 is used to control the connection or disconnection between the first inlet 71 and the outlet 72. The control function of the cut-off component 7 over the first inlet 71 and the outlet 72 allows the nursing staff to selectively open or close the overflow pipe 4 according to the actual liquid level in the measuring chamber 21. Thus, when the waste liquid in the measuring chamber 21 reaches the maximum measuring scale, the excess waste liquid is guided into the waste liquid collection chamber 121 by connecting the first inlet 71 and the outlet 72, preventing the waste liquid from continuously accumulating in the measuring chamber 21 and overflowing from the top of the measuring cylinder 2 or flowing back to the drainage pipe 3. Of course, the overflow pipe 4 can also be kept open so that the waste liquid automatically flows into the waste liquid collection chamber 121 after the measuring chamber 21 is full. If it is necessary to empty the metering chamber 21, the waste liquid in the metering chamber 21 can be discharged into the waste liquid collection chamber 121 through a specific emptying structure, and then the metering work can be carried out again.

[0045] The aforementioned components, through their respective functional positioning and interconnections, form a complete closed-loop system on the waste liquid bag 1, encompassing waste liquid introduction, volume measurement, excess overflow, and waste liquid storage. The drainage tube 3 introduces waste liquid into the measuring cylinder 2, which provides real-time volume readings. Once full, the overflow tube 4 automatically discharges the excess volume. The cut-off component 7 controls the opening and closing of the overflow tube 4. The collection tube 6 collects the waste liquid discharged from the overflow tube 4 into the waste liquid collection chamber 121. The functions of each component are sequentially connected according to the direction of waste liquid flow. Without the need for external instruments or pipeline switching, nursing staff only need to connect the drainage tube 3 to the patient, suspend the waste liquid bag 1 on a support, and control the opening and closing of the overflow tube 4 via the cut-off component 7 based on the liquid level in the measuring chamber 21. This allows for the completion of the entire process of drainage, measurement, overflow, and collection on a single device, achieving integrated waste liquid collection and measurement functions within a single unit.

[0046] The working principle of the integrated waste fluid collection and metering device for home drainage tube care of the present invention is as follows: waste fluid flows from the patient's body into the metering chamber 21 of the measuring cylinder 2 through the drainage tube 3 and gradually accumulates. The nursing staff reads the volume value of the currently drained waste fluid through the metering scale on the side wall of the measuring cylinder 2. When the waste fluid level in the metering chamber 21 rises to or above the maximum metering scale of the measuring cylinder 2, the waste fluid that continues to flow in no longer accumulates in the metering chamber 21, but enters the overflow pipe 4 through the first end of the overflow pipe 4 and flows along the overflow pipe 4 to the second end of the overflow pipe 4. Then, it enters the cutting component 7 through the first inlet 71 of the cutting component 7, flows out through the outlet 72 of the cutting component 7 and enters the collection pipe 6. Finally, it flows into the waste fluid collection chamber 121 from the first end of the collection pipe 6. While the measuring cylinder 2 is always kept at full scale, the excess part is automatically guided into the waste fluid collection chamber 121 to prevent the waste fluid from overflowing from the top of the measuring cylinder 2. This structural design allows waste liquid to complete the entire process of diversion, metering, overflow and collection in a single device. Nursing staff can select between two working modes, metering accumulation and overload overflow, by operating the cut-off component 7.

[0047] The waste liquid bag 1 includes a metering area 11 and a waste liquid collection area 12 arranged sequentially along its height direction. The waste liquid collection area 12 has a waste liquid collection chamber 121. A measuring cylinder 2 is located in the metering area 11 and has a metering chamber 21. A drain pipe 3 is located at one end of the measuring cylinder 2 away from the waste liquid collection area 12 and is connected to the metering chamber 21. The first end of the overflow pipe 4 is connected to the metering chamber 21 and is located at the maximum metering scale of the measuring cylinder 2. Alternatively, the first end of the overflow pipe 4 is located above the maximum metering scale of the measuring cylinder 2. The first end of the liquid collecting pipe 6 is connected to the waste liquid collection chamber 121. The first inlet 71 of the cutting-off component 7 is connected to the second end of the overflow pipe 4, and the outlet 72 of the cutting-off component 7 is connected to the second end of the liquid collecting pipe 6. The cutting-off component 7 is used to control the connection or blockage between the first inlet 71 and the outlet 72. All the above components are integrated into the same waste liquid bag 1, which concentrates the waste liquid measurement and collection functions that originally needed to be completed separately by measuring cup and drainage bag into a single device. Nursing staff do not need to transfer waste liquid between different instruments or manage multiple independent switches. They can control the opening and closing of the overflow pipe 4 by operating the cut-off component 7. After the waste liquid measurement reading is completed in the measuring cylinder 2, the excess part automatically flows into the waste liquid collection chamber 121 through the overflow pipe 4 and the collection pipe 6. The introduction, measurement, overflow and collection of waste liquid in the entire drainage cycle are completed in the closed pipeline system of the same waste liquid bag 1 without the need for external auxiliary instruments, thus realizing the integration of waste liquid collection and measurement functions.

[0048] The first end of the overflow pipe 4 is connected to the measuring chamber 21, and the first end of the overflow pipe 4 is located at the maximum measuring scale of the measuring cylinder 2; or, the first end of the overflow pipe 4 is located above the maximum measuring scale of the measuring cylinder 2. The first end of the overflow pipe 4 being located at or above the maximum measuring scale of the measuring cylinder 2 ensures that waste liquid continuing to flow into the measuring chamber 21 after reaching the maximum measuring scale automatically enters the overflow pipe 4 through the first end and flows along the overflow path to the waste liquid collection chamber 121, preventing waste liquid from overflowing from the top of the measuring cylinder 2. The position of the first end of the overflow pipe 4 is fixed and does not change with the hanging angle of the waste liquid bag 1 or the filling degree of the waste liquid collection chamber 121, providing nursing staff with stable and predictable overflow triggering conditions. Waste liquid only passes through the overflow pipe 4 when the liquid level in the measuring chamber 21 exceeds the maximum measuring scale, and does not affect the stability of the liquid level and the accuracy of the reading in the measuring chamber 21 under normal measuring conditions.

[0049] The first inlet 71 of the cutting-off component 7 is connected to the second end of the overflow pipe 4, and the outlet 72 of the cutting-off component 7 is connected to the second end of the collection pipe 6. The cutting-off component 7 is used to control the connection or disconnection between the first inlet 71 and the outlet 72. The cutting-off component 7 is connected to the overflow pipe 4 through the first inlet 71 and to the collection pipe 6 through the outlet 72, and performs the on / off control function between the two. When the cutting-off component 7 is open, the waste liquid in the overflow pipe 4 flows into the waste liquid collection chamber 121 through the collection pipe 6, and is cut off in the overflow pipe 4 when it is closed. This structural design concentrates the on / off control of the overflow pipe 4 on a single component, the cutting-off component 7. Nursing personnel do not need to install a separate clamping device on the overflow pipe 4 or perform additional operations to open or close the overflow pipe 4, reducing the number of pipeline nodes on the waste liquid bag 1 that require independent operation.

[0050] Preferably, depending on the different drainage sites and the patient's physical condition, the maximum measurement scale of the measuring cylinder 2 can be set to any value among 100ml, 200ml, or 300ml (the actual capacity is greater than the maximum scale). The capacity of the waste fluid collection chamber 121 is preferably 3 to 5 times the maximum measurement scale of the measuring cylinder 2. That is, when the maximum measurement scale of the measuring cylinder 2 is 200ml, the capacity of the waste fluid collection chamber 121 can be set to any value among 600ml, 800ml, or 1000ml. Of course, the capacity of the waste fluid collection chamber 121 can be directly selected as 2000ml, which is suitable for home care scenarios that require long-term continuous drainage and where nursing staff cannot frequently perform emptying operations (such as during nighttime sleep or when the patient is out).

[0051] In addition, an integrated device for collecting and metering waste fluid in home drainage tube care also includes:

[0052] The first end of the drain pipe 5 is connected to the measuring chamber 21, and the first end of the drain pipe 5 is located at the smallest measuring mark of the measuring cylinder 2; or, the first end of the drain pipe 5 is located below the smallest measuring mark of the measuring cylinder 2. The second end of the drain pipe 5 is connected to the second inlet 73 of the cut-off component 7. The first end of the drain pipe 5 is connected to the measuring chamber 21, and the first end of the drain pipe 5 is located at the smallest measuring mark of the measuring cylinder 2; or, the first end of the drain pipe 5 is located below the smallest measuring mark of the measuring cylinder 2. The connection position of the first end of the drain pipe 5 with the measuring chamber 21 also corresponds to the starting position of the scale line on the side wall of the measuring cylinder 2, ensuring a clear spatial correspondence between the volume value displayed by the measuring cylinder 2 and the actual volume of waste liquid that the drain pipe 5 can discharge. This avoids the situation where some waste liquid remains at the bottom of the measuring chamber 21 and cannot be discharged due to the drain pipe 5 opening position being too high, thus ensuring the consistency of the residual liquid volume in the measuring chamber 21 after each emptying operation, which is beneficial to improving the comparability and repeatability between multiple consecutive measurement readings.

[0053] The shut-off component 7 is also used to control the connection or blockage between the second inlet 73 and the outlet 72. Based on the existing drain pipe 5 and the shut-off component 7 with the second inlet 73, the shut-off component 7, in addition to controlling the connection or blockage between the first inlet 71 and the outlet 72 to manage the opening or closing of the overflow pipe 4, is also used to control the connection or blockage between the second inlet 73 and the outlet 72 to manage the opening or closing of the drain pipe 5. The control of the first inlet 71 and outlet 72 by the cut-off component 7 and the control of the second inlet 73 and outlet 72 by the cut-off component 7 are independent of each other. That is, the cut-off component 7 can block the second inlet 73 and outlet 72 while opening the first inlet 71 and outlet 72, or block the first inlet 71 and outlet 72 while opening the second inlet 73 and outlet 72, or block both inlets and outlets 72 at the same time or open both inlets and outlets 72 at the same time, depending on the operation needs of the nursing staff. Because of the control function of the cut-off component 7 on the second inlet 73 and outlet 72, the drain pipe 5 is only allowed to flow from the metering chamber 21 to the waste liquid collection chamber 121 through the drain pipe 5, the cut-off component 7 and the collection pipe 6 when the cut-off component 7 controls the second inlet 73 and outlet 72 to be in a connected state. When the second inlet 73 and outlet 72 are in a blocked state, the drain pipe 5 is cut off and the metering chamber 21 remains in a metering accumulation state.

[0054] Preferably, the measuring cylinder 2 is made of a transparent material. The transparent material of the measuring cylinder 2 can be any one of polycarbonate, polypropylene, polystyrene, polymethyl methacrylate, or polyethylene terephthalate. Nursing staff can directly observe the level and properties of the waste fluid inside the measuring chamber 21 through the wall of the measuring cylinder 2, including the color, turbidity, and the presence of clinical indicators such as sediment or blood clots, thereby obtaining additional information for assessing the patient's condition while obtaining the volume reading. The transparent material, combined with the graduation lines on the side wall of the measuring cylinder 2, allows nursing staff to use the lowest point of the meniscus as a reading reference when observing through the wall of the measuring cylinder 2, and directly read the drainage volume value according to the graduation line markings. Since the measuring cylinder 2 is located in the measuring area 11 and above the waste liquid collection area 12, the transparent measuring cylinder 2 allows caregivers to make a preliminary visual judgment from a certain distance on whether waste liquid has accumulated in the measuring chamber 21 and the approximate accumulation range without bending over or touching the waste liquid bag 1 in home care scenarios, thus improving the convenience and efficiency of nursing observation.

[0055] Alternatively, the measuring cylinder 2 has a viewing section for the user to visually observe the waste liquid inside the measuring chamber 21 from the outside. The viewing section on the measuring cylinder 2 also meets the needs of nursing staff to observe the waste liquid inside the measuring chamber 21 without requiring the entire wall of the measuring cylinder 2 to be made of transparent material, thus reducing manufacturing costs and material selection limitations. The viewing section can be a strip-shaped transparent area extending along the height of the measuring cylinder 2, or a transparent window covering a partial area of ​​the side wall of the measuring cylinder 2. It should at least cover the entire height range from the smallest to the largest measuring scale of the measuring cylinder 2 to ensure that nursing staff can observe any scale position corresponding to the liquid level inside the measuring chamber 21. Compared to the overall transparent graduated cylinder 2, the graduated cylinder 2 has a transparent section structure that allows other areas of the graduated cylinder 2 to be made of opaque or semi-transparent materials. These areas can provide additional structural support strength and light protection for the graduated cylinder 2, preventing the waste liquid from deteriorating or degrading due to light exposure during long-term use. At the same time, the transparent section, as a transparent observation window, still retains the function of allowing nursing staff to visually observe the level and properties of the waste liquid in the measuring chamber 21.

[0056] Preferably, an exhaust valve 8 is provided at the end of the measuring cylinder 2 away from the waste liquid collection area 12. The exhaust valve 8 connects the metering chamber 21 to the external environment, and the gas flow direction of the exhaust valve 8 is from the metering chamber 21 to the external environment. During the drainage process, waste liquid continuously enters the metering chamber 21, and the gas above the liquid surface in the metering chamber 21 is gradually compressed. If there is no exhaust valve 8 (such as a duckbill valve, one-way spring valve, or umbrella valve), the gas will form an air resistance, hindering the smooth flow of waste liquid into the metering chamber 21, and even causing the liquid flow in the drainage pipe 3 to stop. With the exhaust valve 8, the compressed gas in the metering chamber 21 can be automatically discharged to the external environment through the exhaust valve 8 when the internal pressure increases, maintaining the stable gas pressure in the metering chamber 21, so that the waste liquid can continuously and smoothly flow into the metering chamber 21. The exhaust valve 8 is located at the top of the measuring cylinder 2, and the outlet position of the exhaust valve 8 is higher than the highest liquid level in the metering chamber 21, preventing the waste liquid from leaking out through the exhaust valve 8 during the drainage process or when the device is tilted, ensuring that the waste liquid always flows in a closed pipeline system.

[0057] Preferably, a normally closed air inlet valve 9 is also provided at the end of the measuring cylinder 2 away from the waste liquid collection area 12. The normally closed air inlet valve 9 connects the measuring chamber 21 with the external environment, and the gas flow direction of the normally closed air inlet valve 9 is from the external environment to the measuring chamber 21. The normally closed air inlet valve 9 is located at the end of the measuring cylinder 2 away from the waste liquid collection area 12, that is, at the top of the measuring cylinder 2, and is located at the same end as the exhaust valve 8. The gas flow direction of the normally closed air inlet valve 9 (such as a spring-return type press valve, elastic diaphragm type press valve, or plug type air inlet valve, etc.) is limited to from the external environment to the measuring chamber 21. That is, the normally closed air inlet valve 9 is in the closed state under normal conditions, and only allows external air to enter the measuring chamber 21 when the nursing staff actively opens it. The normally closed air inlet valve 9 works in conjunction with the drain pipe 5 during evacuation operations. When the nursing staff opens the connection between the second inlet 73 and the outlet 72 of the cut-off component 7 to evacuate, the waste liquid in the metering chamber 21 flows out through the drain pipe 5, and the liquid level in the metering chamber 21 drops. If external air is not introduced, a negative pressure will form in the metering chamber 21, causing the waste liquid evacuation speed to slow down or even stop. After opening the normally closed air inlet valve 9, external air enters the metering chamber 21, making the air pressure in the metering chamber 21 consistent with the external environment, ensuring that the waste liquid in the metering chamber 21 can be smoothly discharged through the drain pipe 5 under the action of gravity. Since the normally closed air inlet valve 9 is normally closed, the air inlet valve remains closed under normal metering conditions, which does not affect the airtightness of the metering chamber 21. External air will not enter the metering chamber 21 through the normally closed air inlet valve 9 and change the gas composition in the metering chamber 21 or introduce contaminants. The nursing staff only needs to actively open the normally closed air inlet valve 9 during evacuation operations.

[0058] Additionally, it should be noted that during the emptying operation, the drainage tube 3 should be closed first (using a Robert clamp, slide clamp, or stopcock valve) to block the passage between the drainage tube 3 and the metering chamber 21. Then, the normally closed air inlet valve 9 should be opened, connecting the second inlet 73 and outlet 72 of the cut-off component 7, allowing the waste liquid in the metering chamber 21 to be discharged into the waste liquid collection chamber 121 via the drain pipe 5. The purpose of closing the drainage tube 3 is to prevent the waste liquid in the metering chamber 21 or externally introduced air from flowing back into the patient's body through the drainage tube 3 during the emptying process, due to changes in air pressure or a drop in liquid level within the metering chamber 21, thus avoiding the risk of retrograde infection or air embolism. Alternatively, a traditional flow control device (such as a roller regulator, screw valve, or clip-on regulator) can be used, which can not only control the flow rate of the drained waste liquid but also cut off the drainage tube 3. The flow rate of waste fluid in the drainage tube 3 is controlled by adjusting the opening of the flow regulating device, so that the drainage speed is kept within a suitable range for the patient and avoids drastic pressure fluctuations or adverse reactions caused by excessively fast drainage speed.

[0059] Preferably, the drainage tube 3 is equipped with a one-way valve 31 and a pressure regulating balloon 32. The one-way valve 31 is located inside the drainage tube 3, and the flow direction of the one-way valve 31 is from the end of the drainage tube 3 away from the measuring cylinder 2 towards the waste fluid bag 1. The pressure regulating balloon 32 is located between the one-way valve 31 and the waste fluid bag 1. The flow direction of the one-way valve 31 is consistent with the direction of the drainage process, ensuring that the one-way valve 31 remains unobstructed during normal drainage, and that the one-way valve 31 can close in time to prevent backflow when the pressure in the patient's thoracic or abdominal cavity fluctuates. The pressure regulating balloon 32 is located on the drainage tube 3 between the one-way valve 31 and the waste fluid bag 1, that is, the pressure regulating balloon 32 is downstream of the one-way valve 31. This position allows pressure fluctuations in the drainage tube 3 to be filtered and blocked by the one-way valve 31 before being transmitted to the pressure regulating balloon 32. The pressure regulating balloon 32 buffers and regulates the pressure in the drainage tube 3 through its own elastic deformation. When the pressure in the drainage tube 3 increases instantaneously, the pressure regulating balloon 32 expands to absorb part of the pressure. When the pressure in the drainage tube 3 decreases, the pressure regulating balloon 32 contracts to release the stored pressure, thereby reducing the impact of drastic pressure fluctuations in the drainage tube 3 on the patient's wound and drainage effect.

[0060] Preferably, the waste liquid bag 1 and the measuring cylinder 2 are integrally formed together. The metering area 11 of the waste liquid bag 1 and the measuring cylinder 2 are formed into an inseparable unit during the manufacturing process through processes such as heat sealing, bonding, or co-injection molding. The integral design allows the waste liquid bag 1 and the measuring cylinder 2 to be disposed of as a whole after a single drainage cycle. Nursing staff do not need to handle the measuring cylinder 2 and the waste liquid bag 1 separately, simplifying the post-use treatment process and reducing the number of steps for waste sorting and disposal. At the same time, the integral structure reduces dead space and liquid residue at the detachable interface, reducing the possibility of waste liquid stagnation at the connection between the measuring cylinder 2 and the waste liquid bag 1.

[0061] Preferably, the metering zone 11 has a connecting hole that extends through both sides of the metering zone 11 along the thickness direction of the waste liquid bag 1. The measuring cylinder 2 passes through the connecting hole, and its outer wall is integrally formed with the hole wall. The measuring cylinder 2, inserted into the connecting hole, is integrally formed with the hole wall through a heat-sealing or adhesive process, making the measuring cylinder 2 a part of the metering zone 11 after being inserted into the connecting hole, forming a continuous sealed interface. This provides stable support for the measuring cylinder 2, preventing axial movement or radial deflection within the connecting hole due to the weight of the waste liquid or external forces during use.

[0062] Preferably, the metering zone 11 has a hanging opening 111. The hanging opening 111 in the metering zone 11 is used to suspend the waste liquid bag 1 on an external support (such as an IV stand, bed hook, etc.), so that the waste liquid bag 1 is kept vertically suspended in the height direction during use. This ensures that the liquid level in the metering chamber 21 maintains a correct horizontal correspondence with the scale lines on the side wall of the measuring cylinder 2, avoiding reading errors caused by the tilt of the waste liquid bag 1 or the skewness of the measuring cylinder 2.

[0063] In addition, an integrated device for collecting and measuring waste fluid in home drainage tube care also includes a weighing suspension device. This device passes through the suspension opening 111 to suspend the waste fluid bag 1 on an external support and is used to weigh the waste fluid inside the bag 1 in real time. The weighing suspension device continuously outputs weight data while bearing the weight of the waste fluid bag 1, and caregivers can directly read the current weight of the waste fluid inside the bag 1 through its display. Because the weighing suspension device is independent of the waste fluid bag 1, its weighing function is unaffected by the distribution of waste fluid inside the bag 1 or the suspension angle of the bag 1, and the weighing result objectively reflects the total change in the amount of waste fluid inside the bag 1. The weighing suspension device can be a mechanical spring scale or an electronic sensor structure, etc. Any suspended weighing device that can pass through the suspension opening 111 and detect the weight of the waste bag 1 in real time is applicable. The weighing suspension device and the waste bag 1 are two detachable independent components. The weighing suspension device can be removed from the suspension opening 111 after the current waste bag 1 is used and reused for a new waste bag 1. Simultaneously, to facilitate data analysis and recording, a wireless communication module can be installed within the weighing suspension device, electrically connected to the circuit board of the weighing suspension device. This module transmits the weight data acquired in real time by the weighing suspension device to an external receiving device via wireless signal. The weight data transmitted by the wireless communication module can be presented on the external receiving device in the form of numerical values, trend graphs, or data curves, facilitating nursing staff to observe changes in drainage volume and take timely nursing measures when drainage volume abnormally increases or decreases. Simultaneously, the external receiving device can store and export the received weight data in chronological order, providing clinical data support for doctors to assess changes in the patient's condition and adjust treatment plans.

[0064] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0065] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0066] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An integrated device for collecting and metering waste fluid in home drainage tube care, characterized in that, include: Waste liquid bag (1), the waste liquid bag (1) includes a metering area (11) and a waste liquid collection area (12) arranged sequentially along its height direction, the waste liquid collection area (12) having a waste liquid collection chamber (121); Measuring cylinder (2), the measuring cylinder (2) is located in the measuring area (11), the measuring cylinder (2) has a measuring cavity (21); Drainage tube (3), the drainage tube (3) is located at one end of the measuring cylinder (2) away from the waste liquid collection area (12), and the drainage tube (3) is connected to the metering chamber (21); An overflow pipe (4) is provided, with its first end connected to the measuring chamber (21). The first end of the overflow pipe (4) is located at the maximum measuring scale of the measuring cylinder (2); or, the first end of the overflow pipe (4) is located above the maximum measuring scale of the measuring cylinder (2). A liquid collection pipe (6) is provided, the first end of which is connected to the waste liquid collection chamber (121); The cut-off component (7) has a first inlet (71) connected to the second end of the overflow pipe (4) and an outlet (72) connected to the second end of the collecting pipe (6). The cut-off component (7) is used to control the connection or blockage between the first inlet (71) and the outlet (72).

2. The integrated device for collecting and metering waste fluid in home drainage tube care according to claim 1, characterized in that, The integrated device for collecting and metering waste fluid in home drainage tube care also includes: The drain pipe (5) has its first end connected to the metering chamber (21) and is located at the minimum metering scale of the measuring cylinder (2); or, the first end of the drain pipe (5) is located below the minimum metering scale of the measuring cylinder (2); the second end of the drain pipe (5) is connected to the second inlet (73) of the cut-off component (7); The cutting-off component (7) is also used to control the connection or blockage between the second inlet (73) and the outlet (72).

3. The integrated device for collecting and metering waste fluid in home drainage tube care according to claim 1, characterized in that, The graduated cylinder (2) is made of transparent material.

4. The integrated device for collecting and metering waste fluid in home drainage tube care according to claim 1, characterized in that, The measuring cylinder (2) has a transparent section for allowing the user to visually observe the waste liquid inside the measuring chamber (21) from outside the measuring cylinder (2).

5. The integrated device for collecting and metering waste fluid in home drainage tube care according to claim 1, characterized in that, An exhaust valve (8) is provided at one end of the measuring cylinder (2) away from the waste liquid collection area (12). The exhaust valve (8) connects the measuring chamber (21) with the external environment. The gas flow direction of the exhaust valve (8) is from the measuring chamber (21) to the external environment.

6. The integrated device for collecting and metering waste fluid in home drainage tube care according to claim 1, characterized in that, The measuring cylinder (2) is also provided with a normally closed air inlet valve (9) at one end away from the waste liquid collection area (12). The normally closed air inlet valve (9) connects the metering chamber (21) with the external environment. The gas flow direction of the normally closed air inlet valve (9) is from the external environment to the metering chamber (21).

7. The integrated device for collecting and metering waste fluid in home drainage tube care according to claim 1, characterized in that, The drainage tube (3) is provided with a one-way valve (31) and a pressure regulating air bag (32). The one-way valve (31) is located inside the drainage tube (3), and the flow direction of the one-way valve (31) is from the end of the drainage tube (3) away from the measuring cylinder (2) to the waste liquid bag (1). The pressure regulating air bag (32) is located between the one-way valve (31) and the waste liquid bag (1).

8. The integrated device for collecting and metering waste fluid in home drainage tube care according to claim 1, characterized in that, The waste liquid bag (1) and the measuring cylinder (2) are integrally set together.

9. The integrated device for collecting and metering waste fluid in home drainage tube care according to claim 1, characterized in that, The metering area (11) has a connecting hole that penetrates both sides of the metering area (11) along the thickness direction of the waste liquid bag (1). The measuring cylinder (2) passes through the connecting hole, and the outer wall of the measuring cylinder (2) is integrally formed with the hole wall of the connecting hole.

10. The integrated device for collecting and metering waste fluid in home drainage tube care according to claim 1, characterized in that, The metering area (11) is provided with a hanging opening (111); the integrated device for collecting and metering waste liquid for home drainage tube care also includes a weighing hanging device, which is used to pass through the hanging opening (111) to suspend the waste liquid bag (1) on an external support, and to weigh the weight of the waste liquid in the waste liquid bag (1) in real time.

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