Waste liquid drainage device for CRRT treatment

Abstract

The invention discloses a waste liquid drainage device for CRRT treatment, which is used for solving the problems that in the CRRT treatment process, waste liquid is directly collected through a collecting box, so that peculiar smell is easily generated in the collecting box, and cross infection is easily caused when the collecting box is used for other patients, the waste liquid drainage device comprises a liquid transfer box, and a mounting plate is fixed in the liquid transfer box; a waste liquid bag for collecting waste liquid is arranged on the surface of the mounting plate and is of a bag body structure with two open ends; when the device is used, the waste liquid bag section with the appropriate length can be taken from the waste liquid bag roll according to the waste liquid discharge amount set during CRRT treatment, waste liquid is discharged into the waste liquid bag section through connection of the liquid inlet connector and the drainage tube to be sealed and stored, and compared with the prior art that waste liquid is directly contained in a collection box, peculiar smell can be reduced, and the treatment effect is improved. And cross infection caused when the device is used by different patients can be avoided.

Description

Technical Field

[0001] This invention relates to the field of drainage device technology, and more specifically to a waste fluid drainage device for CRRT treatment. Background Technology

[0002] CRRT (Continuous Renal Replacement Therapy) is a treatment technique that removes harmful substances from a patient's blood through extracorporeal blood circulation to replace the function of damaged kidneys. During the operation of the CRRT device, dialysate flows in through a dedicated dialysate inlet. After exchanging solutes with the blood, it forms a waste liquid containing toxins. This waste liquid is then transported to a drainage bag for temporary storage through the waste liquid outlet and a connected drainage tube.

[0003] To reduce the workload of medical staff in frequently changing drainage bags, existing technologies, such as the medical waste fluid collection device and its usage method disclosed in Chinese invention patent CN111097074B, include a movable lifting platform with a waste fluid collection box installed on it. After collecting the waste fluid through the waste fluid collection box, it is convenient to centrally process the drainage waste fluid.

[0004] However, the existing collection methods described above have at least the following drawbacks: 0. Due to the complex composition of the waste liquid and the possibility of high concentrations of metabolic waste and bacteria, after being transferred and temporarily stored in the collection box, dirt is easily left on the inner wall of the box and a serious odor is produced.

[0005] 1. The structure of the collection box is usually relatively closed, and its internal cavity is difficult to clean and disinfect effectively, which can easily lead to cross-infection. Summary of the Invention

[0006] The purpose of this invention is to provide a waste fluid drainage device for CRRT treatment, in order to solve the problems of odor generated by directly collecting waste fluid in the collection box and cross-infection when used by other patients.

[0007] To solve the above problems, the present invention provides the following technical solution: a waste fluid drainage device for CRRT treatment, including a transfer tank, an installation plate fixed inside the transfer tank, a waste fluid bag for collecting waste fluid on the surface of the installation plate, the waste fluid bag is a bag structure with openings at both ends, and the waste fluid bag is integrally formed by multiple interconnected waste fluid bag units, each waste fluid bag unit is fixed with a liquid inlet connector. The mounting plate has a winding mechanism on one side for winding one end of the waste liquid bag, and a bag clamping mechanism for clamping and pulling the waste liquid bag is movably installed on the other side; the surface of the mounting plate is also provided with a cutting mechanism and heat sealing mechanisms located on both sides of the cutting mechanism. It also includes a controller, which is specifically configured as follows: Obtain the set waste liquid discharge volume; Based on the obtained waste liquid discharge volume and the pre-stored waste liquid bag unit capacity, the required number of waste liquid bag units is calculated, and based on the number, the bag clamping mechanism is controlled to pull out waste liquid bags of the corresponding length. The control cutting mechanism cuts the waste liquid bag, and at the same time, the control heat sealing mechanism heat seals both sides of the cut surface of the waste liquid bag, so that the pulled-out waste liquid bag segment forms an independent bag with a volume corresponding to the waste liquid discharge volume.

[0008] The above solution achieves the following beneficial effects: During use, the system can automatically take a waste fluid bag segment of appropriate length from the waste fluid bag roll according to the waste fluid discharge volume set during CRRT treatment. The waste fluid is discharged into the waste fluid bag segment and sealed by connecting the inlet connector to the drainage tube. Compared with the existing technology of directly loading the waste fluid into the collection box, it can reduce odor and avoid cross-infection caused when the device is used by different patients.

[0009] Furthermore, the bag clamping mechanism includes: The movable plate has its two ends slidably connected to the inner wall of the transfer tank, and its surface is provided with a bag clamping plate. The bag clamping plate drive mechanism is connected between the moving plate and the bag clamping plate to drive the bag clamping plate to move vertically on the surface of the moving plate.

[0010] Beneficial effects: With the bag clamping mechanism, when the amount of waste liquid to be discharged for CRRT treatment is determined, the controller can control the moving plate to move closer to one end of the waste liquid bag, use the bag clamping plate to move downward to clamp the waste liquid bag, and then control the moving plate to move in the opposite direction to pull the waste liquid bag out to the length corresponding to the amount of waste liquid discharged.

[0011] Furthermore, the cutting mechanism includes: The lower cutting assembly is embedded on the surface of the mounting plate, and the upper cutting assembly is installed on the top of the transfer tank 1 for moving downward and cutting off the waste liquid bag; The heat sealing mechanism includes: The lower heat-sealing assembly is embedded on the surface of the mounting plate, and the upper heat-sealing assembly is installed on the top of the transfer tank 1 for moving downward and heat-sealing the waste liquid bag.

[0012] Beneficial effects: By setting up the cutting mechanism and the heat sealing mechanism, after the waste liquid bag is pulled out by the bag clamping mechanism, the controller can control the upper heat sealing component and the upper cutting component to move downward. The pulled-out waste liquid bag segment is cut by the contact between the upper cutting component and the lower cutting component. The two sides of the cut surface of the waste liquid bag are heat sealed by the contact between the upper heat sealing component and the lower heat sealing component, so that the waste liquid bag segment adapted to the waste liquid discharge volume can be independently separated from the waste liquid bag roll.

[0013] Furthermore, the surface of the mounting plate is embedded with a groove, which is located on the side of the cutting mechanism and the heat sealing mechanism away from the winding mechanism. When the waste liquid bag is cut, the bag clamping mechanism can pull the cut waste liquid bag segment into the groove. The top of the transfer tank is covered by a cover plate located above the groove.

[0014] Beneficial effects: After the waste liquid bag segment is separated, the waste liquid bag segment can be pulled by the bag clamping mechanism to enter the groove. In this way, the section of the waste liquid bag segment near the waste liquid connector will be lifted by the bag clamping mechanism, thereby raising the bag opening and ensuring the capacity of the waste liquid bag segment. The cover plate makes it easy to open the cover plate and connect the drainage pipe to the liquid inlet connector of the waste liquid bag segment.

[0015] Furthermore, the interior of the transfer tank is provided with a cavity at the bottom of the mounting plate for temporarily storing the waste liquid bag segment that has been collected. The bottom opening of the groove is movably connected to the base plate through a movable component set in the cavity. The movable component can drive the base plate to move up, down, left and right in the cavity. The surface of the base plate is provided with a discharge port, and two discharge flaps are symmetrically rotated and installed on both sides of the discharge port.

[0016] Beneficial effects: The base plate is used to support the waste liquid bag segment containing waste liquid. After the waste liquid is collected, the base plate can be lifted off the bottom of the groove by the movable component, and the base plate can be moved by the movable component. Then, the feeding flap can be rotated to put the waste liquid bag segment into a suitable position in the cavity, which is convenient for the temporary storage of the waste liquid bag segment containing waste liquid.

[0017] Furthermore, the movable components include a vertical lifting mechanism installed on both sides of the inner wall of the transfer tank for driving the base plate to move vertically, and a horizontal moving mechanism installed on the vertical lifting mechanism for driving the base plate to move horizontally.

[0018] Beneficial effects: The vertical lifting mechanism facilitates the vertical movement of the horizontal moving mechanism, thereby adjusting the height position of the base plate within the cavity. The horizontal moving mechanism facilitates the horizontal adjustment of the base plate within the cavity, thus adjusting the position of the base plate. After opening the unloading flap, the waste liquid bag segment containing waste liquid is placed in the appropriate position.

[0019] Furthermore, the inlet connector has a cap attached to its threaded connection.

[0020] Beneficial effects: When using, the cap can be opened to easily connect one end of the drainage tube to the waste liquid bag section through the liquid inlet connector, and then connect the other end of the drainage tube to the waste liquid outlet of the CRRT equipment for drainage. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the internal three-dimensional structure of the present invention.

[0022] Figure 2 This is a frontal cross-sectional structural diagram of the present invention.

[0023] Figure 3 This is a three-dimensional structural diagram of the present invention.

[0024] Figure 4 This is another frontal cross-sectional structural schematic diagram of the present invention.

[0025] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle.

[0026] Figure 6 This is a schematic diagram of the waste liquid bag structure of the present invention.

[0027] Figure 7 This is a schematic diagram of the external three-dimensional structure of the present invention.

[0028] In the diagram: 1. Transfer tank; 2. Mounting plate; 3. Waste liquid bag; 301. Waste liquid bag unit; 302. Waste liquid bag section; 4. Inlet connector; 5. Winding mechanism; 6. Bag clamping mechanism; 61. Moving plate; 62. Bag clamping plate; 63. Bag clamping plate drive mechanism; 7. Cutting mechanism; 71. Lower cutting assembly; 72. Upper cutting assembly; 8. Heat sealing mechanism; 81. Lower heat sealing assembly; 82. Upper heat sealing assembly; 9. Controller; 10. Cavity; 11. Movable assembly; 111. Vertical lifting mechanism; 112. Horizontal moving mechanism; 12. Base plate; 13. Discharge port; 14. Discharge flap; 15. First motor; 16. Connecting plate; 17. First electric push rod; 18. Cover; 19. Traction mechanism; 20. Step surface. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figure 1-7 .

[0031] Example 1 A waste fluid drainage device for CRRT treatment includes a transfer tank 1, a horizontally mounted mounting plate 2 fixed inside the transfer tank 1, and a waste fluid bag 3 for collecting waste fluid on the surface of the mounting plate 2. By collecting waste fluid through the waste fluid bag 3, direct contact between the waste fluid and the inside of the transfer tank 1 can be avoided, thereby reducing odor and infection.

[0032] The waste liquid bag 3 is a bag structure with openings at both ends, and the waste liquid bag 3 is integrally formed by multiple interconnected waste liquid bag units 301. Each waste liquid bag unit 301 is fixed with an inlet connector 4, and each inlet connector 4 is threaded with a cap 18. When the cap 18 is removed, the inlet connector 4 can be connected to an external drainage tube, and the other end of the drainage tube can be connected to a drainage bag. After the drainage bag valve is opened, the waste liquid flows into the waste liquid bag 3 for collection under the action of gravity. In addition, the drainage tube can also be directly connected to the waste liquid outlet of the CRRT equipment, and the waste liquid can be collected directly by the waste liquid bag 3 instead of the drainage bag.

[0033] It is worth noting that the amount of waste liquid discharged during CRRT treatment is not random, but strictly controlled. It is affected by many factors such as the dosage of medication and the treatment time. For example, the CRRT waste liquid discharge analysis method and system disclosed in Chinese invention patent application CN118629590A is specifically used to calculate the waste liquid discharge. Therefore, when the drainage tube is connected to the waste liquid outlet of the CRRT equipment or when the drainage bag is full and needs to be discharged, the waste liquid discharge can be determined.

[0034] Based on this, such as Figure 1 As shown, during drainage, different numbers of waste liquid bag units 301 can be flexibly combined according to the known waste liquid discharge volume. The capacity of the waste liquid bag 3 is adapted to the waste liquid discharge volume. For example, if the capacity of the waste liquid bag unit 301 is 500ml, one waste liquid bag unit 301 can be used when the waste liquid discharge volume is 400ml. When the waste liquid discharge volume is 800ml, two waste liquid bag units 301 can be combined. On the one hand, this avoids unnecessary waste caused by the waste liquid bag 3 being too large, and on the other hand, it avoids waste liquid backflow caused by the waste liquid bag 3 being too small.

[0035] The following section provides a detailed explanation of how the waste liquid bag unit 301 is combined into a waste liquid bag segment 302 with a corresponding capacity based on the amount of waste liquid discharged.

[0036] like Figure 1 and Figure 2 As shown, the mounting plate 2 has a winding mechanism 5 on one side for winding one end of the waste liquid bag 3, and a clamping mechanism 6 on the other side for clamping and pulling the waste liquid bag 3. The winding mechanism 5 can be a common rotating shaft structure. Specifically, one end of the waste liquid bag 3 can be fixed and wound on the rotating shaft structure. When the clamping mechanism 6 clamps one end of the waste liquid bag 3 and moves it away from the winding mechanism 5, the waste liquid bag 3 can be unwound from the winding mechanism 5. The waste liquid bag 3 can be replaced after it is used up. It should be noted that the rotating shaft structure is installed and then rotated and disassembled, which are conventional technical means. Therefore, they will not be described in detail here.

[0037] Furthermore, such as Figure 2 , Figure 4 and Figure 5 As shown, the surface of the mounting plate 2 is also provided with a cutting mechanism 7 and a heat sealing mechanism 8 located on both sides of the cutting mechanism 7. After the waste liquid bag 3 is pulled out from the winding mechanism 5 for a certain distance, the pulled-out waste liquid bag segment 302 can be cut by the cutting mechanism 7 to form an independent waste liquid bag segment 302. The heat sealing mechanism 8 heat seals both sides of the cut surface of the waste liquid bag 3. In this way, several cut-off waste liquid bag units 301 constitute a waste liquid bag segment 302, and the tail of the waste liquid bag segment 302 is sealed. At the same time, the head of the next segment of the remaining waste liquid bag 3 is also sealed. When the next waste liquid bag segment 302 is used, both ends of the heat-sealed waste liquid bag segment 302 will be sealed. Therefore, when a new waste liquid bag 3 is installed, the first waste liquid bag unit 301 can be discarded. The subsequent cut-off waste liquid bag segments 302 will be sealed at both ends after heat sealing and can be used directly.

[0038] To facilitate the use of waste liquid bag segments 302 of appropriate length, a controller 9 is fixedly installed on the side of the transfer tank 1. The controller 9 has an input button, which allows the waste liquid discharge volume to be easily input into the controller 9. The controller 9 obtains the set waste liquid discharge volume. Based on the obtained waste liquid discharge volume and the pre-stored capacity of waste liquid bag units 301, it calculates the required number of waste liquid bag units 301. Based on the number, it controls the bag clamping mechanism 6 to pull out a waste liquid bag of the corresponding length, and controls the cutting mechanism 7 to cut the pulled-out waste liquid bag 3 to form a waste liquid bag segment 302. At the same time, it controls the heat sealing mechanism 8 to heat seal both sides of the cut surface of the waste liquid bag 3, so that the pulled-out waste liquid bag segment 302 forms an independent bag with a volume corresponding to the waste liquid discharge volume.

[0039] Specifically, the controller 9 has a built-in calculation module. The calculation module obtains the key input value V1, for example, 800ml, and the capacity of the waste liquid bag unit 301 is V2, for example, 500ml. Then, the number of waste liquid bag units 301 that need to be combined is N = V1 (800) / V2 (500) = 2 (rounded down). After the controller 9 obtains the number of waste liquid bag units 301 that need to be combined obtained by the calculation module, it controls the bag clamping mechanism 6 to pull out the width of two lengths of waste liquid bag units 301, thereby obtaining a waste liquid bag segment 302 with a capacity that is adapted to the amount of waste liquid discharged.

[0040] like Figure 5As shown, the surface of the mounting plate 2 near the bag clamping mechanism 6 has a stepped surface 20. The end of the waste liquid bag 3 extends from the stepped surface 20, so that the bottom surface of the exposed part of the waste liquid bag 3 is suspended. The bag clamping mechanism 6 includes a movable plate 61, whose two ends are respectively horizontally slidably connected to the inner wall of the transfer tank 1, and its surface is provided with a bag clamping plate 62 and a bag clamping plate driving mechanism 63. The bag clamping plate driving mechanism 63 can be an electric push rod. The bag clamping plate driving mechanism 63 is connected between the movable plate 61 and the bag clamping plate 62 to drive the bag clamping plate 62 to move vertically on the surface of the movable plate 61. Specifically, the surface of the mounting plate 2 is equipped with a traction mechanism 1 for driving the movable plate 61 to move horizontally. 9. The traction mechanism 19 can be a linear module, which is a screw and slide rail mechanism driven by a motor. This is existing technology and will not be described in detail here. The controller 9 can be electrically connected to the motor of the linear module. In use, the controller 9 controls the motor of the traction mechanism 19 to work, driving the moving plate 61 to move horizontally closer to the step surface 20. When it reaches the step surface 20, the moving plate 61 moves to the bottom surface of the end of the waste liquid bag 3, and the clamping plate 62 moves to the upper part of the waste liquid bag 3. The clamping plate driving mechanism 63 drives the clamping plate 62 to move downward to clamp the waste liquid bag 3. Then the controller 9 controls the motor of the traction mechanism 19 to work, driving the moving plate 61 to move in the opposite direction to pull out the waste liquid bag 3.

[0041] Understandably, once the cut waste liquid bag segment 302 is filled with waste liquid, the other end connecting the drainage tube to the inlet connector 4 can be disconnected and plugged with a stopper to prevent waste liquid leakage. Then, the drainage tube can be rolled up as follows... Figure 6 As shown, the medical staff attach adhesive tape to the side of the waste fluid bag segment 302, which is carried by them. This facilitates the disposal of the used waste fluid bag segment 302 and the drainage tube together. During disposal, the medical staff can easily pull the end of the waste fluid bag 3 outward a short distance until it protrudes from the stepped surface 20 (that is...). Figure 5 (as shown in the diagram) makes it easy for the bag clamping mechanism 6 to clamp the waste liquid bag 3. The advantage of manually pulling the waste liquid bag 3 is that it is convenient to adjust the position of the liquid inlet connector 4 and prevent the cutting mechanism 7 and the heat sealing mechanism 8 from pressing on the liquid inlet connector 4 when they are working. In order to prevent the waste liquid bag 3 from being pulled too fast and becoming loose, a damping structure can be added to the rotating shaft structure of the winding mechanism 5. Adding damping to the rotating shaft structure is a common practice and will not be elaborated here.

[0042] The cutting mechanism 7 includes a lower cutting assembly 71 embedded in the surface of the mounting plate 2 and an upper cutting assembly 72 installed on the top of the transfer tank 1 for moving downward and cutting the waste liquid bag 2. The heat sealing mechanism 8 includes a lower heat sealing assembly 81 embedded in the surface of the mounting plate 2 and an upper heat sealing assembly 82 installed on the top of the transfer tank 1 for moving downward and heat sealing the waste liquid bag 2.

[0043] In some specific embodiments of this example, the lower heat-sealing assembly 81 and the upper heat-sealing assembly 82 can directly use existing heat-sealing knives, and the lower cutting assembly 71 and the upper cutting assembly 72 can directly use existing cutting blades. Both the heat-sealing knife and the cutting blade are electrically connected to the controller 9. Furthermore, the lower heat-sealing assembly 81 and the lower cutting assembly 71 can be bolted into the surface of the mounting plate 2. This way, when the waste liquid bag 3 is pulled, the bottom surface of the waste liquid bag 3 slides on the surface of the mounting plate 2, preventing it from scraping against the lower heat-sealing assembly 81 and the lower cutting assembly 71 in the groove. The upper heat-sealing assembly 82 and the upper cutting assembly 72... 2. It can be fixedly installed on the connecting plate 16 by bolt connection. The width of the connecting plate 16 is less than the vertical distance between adjacent liquid inlet connectors 4. The connecting plate 16 is connected to the upper part of the inside of the liquid transfer tank 1 by a first electric push rod 17. The first electric push rod 17 is electrically connected to the controller 9. By extending the first electric push rod 17, the connecting plate 16 can be driven to move downward, which drives the upper heat sealing assembly 82 and the upper cutting assembly 72 to move downward at the same time. While the waste liquid bag 3 is cut by the lower cutting assembly 71 and the upper cutting assembly 72, the two sides of the cut are heated and pressurized at the same time, forming two parallel sealing lines on the bag body on both sides of the cut surface.

[0044] In some specific implementations of this embodiment, such as Figure 1 As shown, the liquid inlet connectors 4 can be staggered on both sides of the waste liquid bag 3. The advantage of this is that it avoids the problem of the waste liquid bag 3 bulging when it is wound up because the liquid inlet connectors 4 are concentrated on one side, and ensures that the waste liquid bag 3 is wound evenly as much as possible.

[0045] The specific usage process of this embodiment is as follows: S1, Move the transfer tank 1 to the vicinity of the CRRT treatment equipment.

[0046] S2. Input the amount of waste liquid to be discharged this time through the buttons on the controller 9.

[0047] After S3 and controller 9 obtain the waste liquid discharge volume, they drive the bag clamping mechanism 6 to move to the step surface 20 through the control traction mechanism 19, so that the bag opening of the waste liquid bag 3 is located between the moving plate 61 and the bag clamping plate 62. Then, the bag clamping plate driving mechanism 63 drives the bag clamping plate 62 to move downward and clamp the bag opening. Then, the traction mechanism 19 drives the traction mechanism 6 to move in the opposite direction to pull out the waste liquid bag segment 302 that matches the waste liquid discharge volume.

[0048] S4, the controller 9 controls the cutting mechanism 7 and the heat sealing mechanism 8 to cut and seal the pulled-out waste liquid bag segment 302 to form an independent waste liquid bag segment 302. Waste liquid is collected through the independent waste liquid bag segment 302, which avoids waste caused by the waste liquid bag segment 302 being too large, and also avoids waste liquid backflow caused by the waste liquid bag segment 302 being too small.

[0049] S5. Manually connect the drainage tube to the inlet connector 4 of the waste fluid bag section 302 closest to the bag clamping mechanism 6 to start collecting waste fluid. By collecting the waste fluid into the waste fluid bag section 302, direct contact between the waste fluid and the inner wall of the transfer tank 1 is avoided, effectively solving the problem of inconvenient cleaning caused by directly using the transfer tank 1 for collection in the existing technology. In addition, each waste fluid collection is equipped with a separate waste fluid bag section 302, effectively solving the problem of easy infection caused by the transfer tank 1 when collecting waste fluid from different patients.

[0050] S6. After the waste liquid bag section 302 is filled, the plug is manually blocked to stop the drainage pipe. Then, the drainage pipe is rolled up and fixed to the surface of the bag with tape and disposed of together.

[0051] S7. The end of the waste liquid bag 3 is manually pre-pulled back from below the cutting mechanism 7 to the step surface 20, in preparation for the next retrieval.

[0052] Example 2 The embodiment is an improvement on embodiment 1, the main difference being the addition of a waste liquid bag section for temporary storage.

[0053] In this embodiment, a groove 21 is embedded in the surface of the mounting plate 2. This groove 21 is located on the side of the cutting mechanism 7 and the heat sealing mechanism 8 away from the winding mechanism 5. The bag clamping mechanism 6 moves horizontally at both ends of the groove 21 to pull the waste liquid bag 3. When the waste liquid bag 2 is cut, the bag clamping mechanism 6 can pull the cut waste liquid bag segment 302 into the groove 21. In this way, as Figure 2 As shown, the end of the waste liquid bag 3 near the waste liquid connector 4 will be lifted by the bag clamping mechanism 6, thereby raising the bag opening, i.e., the waste liquid connector 4, to ensure the capacity of the waste liquid bag section 302 and avoid the problem that the height of the inlet connector 4 is too low due to the collapse of the waste liquid bag section 302 when it is laid flat, which would affect the actual collection capacity.

[0054] The top of the transfer tank 1 is provided with a cover plate above the groove 21. The cover plate can be installed by means of hinge connection, which makes it convenient to open the cover plate to connect the drainage pipe, and to open the cover plate to process the waste liquid bag segment 302 containing waste liquid after the waste liquid is collected. The top of the transfer tank 1 is located on the top of the winding mechanism 5, the cutting mechanism 7 and the heat sealing mechanism 8. Another cover plate can be installed in the same way to facilitate the replacement of the waste liquid bag 3.

[0055] Furthermore, to facilitate the temporary storage of the waste liquid bag segment 302 containing waste liquid, the interior of the transfer tank 1 is provided with a cavity 10 at the bottom of the mounting plate 2 for temporarily storing the waste liquid bag segment 301 that has been collected. The bottom opening of the groove 21 is movably connected to the base plate 12 through a movable component 11 set in the cavity 10. The movable component 11 can drive the base plate 12 to move up, down, left and right in the cavity 10. The surface of the base plate 12 is provided with a discharge port 13. Two discharge flaps 14 are symmetrically installed on both sides of the discharge port 13. The discharge flaps 14 can be driven by a motor installed on the base plate 12. The motor can be electrically connected to the controller 9.

[0056] With the above structure, after the waste liquid bag segment 302 is filled with waste liquid and the drainage pipe is fixed to the surface of the bag, the controller 9 can control the movable component 11 to move the bottom plate 12 in the cavity 10, move the bottom plate 12 carrying the waste liquid bag segment 302 to a suitable position, and then the controller 9 controls the motor on the bottom plate 12 to work, drive the feeding flap 14 to flip, so that the waste liquid bag segment 302 falls into the cavity 10.

[0057] It is understandable that the waste liquid bag segment 302, after being filled with waste liquid, has a relatively regular shape, resembling a rectangular block. Furthermore, the length of the waste liquid bag segment 302 is fixed each time it is filled. Therefore, the controller 9 can control the movement of the base plate 12 to arrange the waste liquid bag segments 302 orderly within the cavity 10. The waste liquid bag segments 302, filled with waste liquid, have a certain degree of flexibility, so even if some overlap occurs, it will not cause problems. Of course, the moving component 11 can also be controlled manually by operating the controller 9. In this case, a side door is installed at the bottom of the transfer tank 1 on the side of the cavity 10. The side door can be installed in the same way as the cover plate, and the side door can be made of a transparent material, for example... The transparent acrylic sheet facilitates the placement of waste fluid bags 302 by medical staff according to their distribution. The advantages of placing the waste fluid bags 302 containing waste fluid through the movable component 11 are twofold: firstly, it facilitates control of the placement height, preventing the waste fluid bags 302 from being dropped from a height onto the bottom of the cavity 10 and causing damage to the bags; secondly, when handling the waste fluid bags 302 containing waste fluid, it is only necessary to open the cover plate at the top of the groove 21, roll up the drainage tube, and stick it to the surface of the waste fluid bags 302 with adhesive tape. The rest can be completed by the controller 9. Medical staff do not need to manually pick up the waste fluid bags 302 containing waste fluid and gently place them on the surface of a pile of waste fluid bags 302, reducing psychological discomfort for medical staff.

[0058] In this embodiment, the movable component 11 includes a vertical lifting mechanism 111 installed on both sides of the inner wall of the transfer tank 1 for driving the base plate 12 to move vertically, and a horizontal moving mechanism 112 installed on the vertical lifting mechanism 111 for driving the base plate 12 to move horizontally. The vertical lifting mechanism 111 and the horizontal moving mechanism 112 can adopt the same linear module structure as the traction mechanism 19 in Embodiment 1. The controller 9 is electrically connected to the motor in the linear module, thereby facilitating the control of the movement of the base plate 12 in the horizontal and vertical directions.

[0059] The bottom of the transfer tank 1 is equipped with rollers, and the top of the transfer tank 1 is fixed with a handle. The handle and rollers make it easy to move the transfer tank 1.

[0060] Based on Example 1, the specific usage process of this example is as follows: S1. After fixing the drainage tube to the surface of the waste liquid bag section 302 with adhesive tape, the controller 9 controls the movable component 11 to drive the base plate 12 to carry the waste liquid bag section 302 to the designated position in the cavity 10.

[0061] S2. The discharge flap 14 is flipped by the controller 9 to smoothly put the waste liquid bag segment 302 into the cavity 10 for temporary storage.

[0062] S3. Observe the temporary storage status through the transparent side door. When final processing is required, open the side door to remove all items at once.

[0063] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

[0064] Apart from the technical features described in the specification, the other technical features are known to those skilled in the art. To highlight the innovative features of this invention, the other technical features will not be described in detail here.

Claims

1. A waste liquid drainage device for CRRT treatment, comprising a liquid transfer tank, characterized in that: a mounting plate is fixed inside the liquid transfer tank, and a waste liquid bag for collecting waste liquid is arranged on the surface of the mounting plate, the waste liquid bag has a bag structure with two open ends, and the waste liquid bag is integrally formed by a plurality of connected waste liquid bag units, and each waste liquid bag unit is fixed with a liquid inlet connector; a winding mechanism for winding one end of the waste liquid bag is arranged on one side of the mounting plate, and a bag clamping mechanism for clamping and pulling the waste liquid bag is movably arranged on the other side of the mounting plate; a cutting mechanism and heat sealing mechanisms arranged on both sides of the cutting mechanism are further arranged on the surface of the mounting plate; a controller is further included, which is specifically configured to: obtain a set waste liquid discharge amount; based on the obtained waste liquid discharge amount and a pre-stored waste liquid bag unit capacity, calculate the number of required waste liquid bag units, and based on the number, control the bag clamping mechanism to pull out a waste liquid bag with a corresponding length; control the cutting mechanism to cut the waste liquid bag, and control the heat sealing mechanisms to heat seal the two sides of the cut surface of the waste liquid bag, so that the pulled-out waste liquid bag section forms an independent bag body with a volume corresponding to the waste liquid discharge amount.

2. A waste fluid drainage device for CRRT treatment as defined in claim 1, characterized in that The bag clamping mechanism comprises: a moving plate, both ends of which are slidably connected with the inner wall of the liquid transfer tank, and the surface of which is provided with a bag clamping plate; a bag clamping plate driving mechanism connected between the moving plate and the bag clamping plate for driving the bag clamping plate to move vertically on the surface of the moving plate.

3. A spent fluid drainage device for CRRT treatment as defined in claim 2, characterized in that The cutting mechanism comprises: a lower cutting assembly embedded on the surface of the mounting plate and an upper cutting assembly arranged on the top of the liquid transfer tank for moving downward and cutting the waste liquid bag; The heat sealing mechanism comprises: a lower heat sealing assembly embedded on the surface of the mounting plate and an upper heat sealing assembly arranged on the top of the liquid transfer tank for moving downward and heat sealing the waste liquid bag. 4.The waste liquid drainage device for CRRT treatment according to claim 1, characterized in that: a groove is embedded on the surface of the mounting plate, the groove is located on the side of the cutting mechanism and the heat sealing mechanisms away from the winding mechanism, and when the waste liquid bag is cut, the bag clamping mechanism can pull the cut waste liquid bag section to move into the groove; a cover plate is arranged above the groove on the top of the liquid transfer tank. 5.The waste liquid drainage device for CRRT treatment according to claim 4, characterized in that: a cavity for temporarily storing the waste liquid bag section that has collected waste liquid is arranged at the bottom of the mounting plate inside the liquid transfer tank, the bottom of the groove is open and connected with a bottom plate through a movable assembly arranged in the cavity, the movable assembly can drive the bottom plate to move up and down and left and right in the cavity, a discharge opening is arranged on the surface of the bottom plate, and two discharge flaps are symmetrically arranged on both sides of the discharge opening. 6.The waste liquid drainage device for CRRT treatment according to claim 5, characterized in that: the movable assembly comprises a vertical lifting mechanism arranged on both sides of the inner wall of the liquid transfer tank for driving the bottom plate to move in the vertical direction, and a horizontal moving mechanism arranged on the vertical lifting mechanism for driving the bottom plate to move in the horizontal direction.

7. A waste fluid drainage device for use in CRRT treatment as defined in claim 1, characterized in that, The liquid inlet connector is threadedly connected with a cover.

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