Peritoneal dialysis solution quantitative filling structure

Abstract

This utility model discloses a quantitative filling structure for peritoneal dialysis fluid, relating to the field of peritoneal dialysis fluid technology. It includes a support mechanism comprising a support frame, a positioning frame fixedly connected to the bottom of the inner cavity of the support frame, and a first cylinder fixedly connected to the surface of the positioning frame. A clamping plate is fixedly connected to the output end of the first cylinder. This utility model utilizes a defoaming storage mechanism. The storage tank integrates a vacuum pump and a piston assembly. By evacuating air, the internal pressure is reduced, causing bubbles to escape. A pressure sensor monitors in real time to ensure the defoaming effect. A second solenoid valve on the piston surface controls the liquid flow pressure to prevent the generation of new bubbles, ensuring bubble-free filling of the dialysis fluid from the source. Simultaneously, a flow sensor monitors the liquid flow rate in real time, linking with a third solenoid valve to precisely control the filling volume. Combined with the third cylinder adjusting the filling port height, a quantitative system of "dynamic monitoring + precise control" is formed, significantly reducing the dosage error rate of traditional structures.

Description

Technical Field

[0001] This utility model relates to the field of peritoneal dialysis fluid technology, specifically to a quantitative filling structure for peritoneal dialysis fluid. Background Technology

[0002] In the medical field, peritoneal dialysis is one of the important treatments for patients with kidney failure, and the filling of peritoneal dialysis fluid is crucial in the entire treatment process. Precise quantitative filling not only ensures the accuracy of the dialysis fluid dosage used by the patient but also avoids treatment risks caused by dosage errors. Therefore, efficient, precise, and fluid-quality-assured quantitative filling structures for peritoneal dialysis fluid have become a key research and development focus for medical device manufacturers.

[0003] However, existing peritoneal dialysis fluid quantitative filling structures on the market have many problems. During the filling process, air bubbles can easily get mixed into the liquid, which not only causes errors in the filling volume, but may also allow patients to introduce air bubbles into their bodies when using the dialysis fluid, thus causing adverse reactions. Therefore, a peritoneal dialysis fluid quantitative filling structure is proposed. Utility Model Content

[0004] This invention provides a quantitative filling structure for peritoneal dialysis fluid to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A peritoneal dialysis fluid quantitative filling structure includes a support mechanism, which includes a support frame. A positioning frame is fixedly connected to the bottom of the inner cavity of the support frame, and a first cylinder is fixedly connected to the surface of the positioning frame. A clamping plate is fixedly connected to the output end of the first cylinder. A de-aeration storage mechanism includes a storage tank, with an inlet on one side of the inner cavity of the storage tank and a first solenoid valve inside the inlet. A quantitative filling mechanism includes a third cylinder, the top of which is fixedly connected to the top of the inner cavity of the support frame, and a connecting piece is fixedly connected to the output end of the third cylinder.

[0007] A further improvement of this utility model is that the support mechanism further includes a rubber pad, one side of which is fixedly connected to one side of the clamping plate, and guide rods are fixedly connected to both ends of the clamping plate near the first cylinder. The surface of the guide rods is slidably connected to the inside of the positioning frame, and the rubber pad...

[0008] A further improvement of this utility model is that: a filling container is attached to the bottom of the inner cavity of the support frame, and a cross-shaped top piece is provided on the inner wall of the filling port at the top of the filling container.

[0009] A further improvement of the present invention is that the de-bubbling storage mechanism further includes a second cylinder, the surface of the second cylinder being fixedly connected to the surface of the storage tank, and a piston being fixedly connected to the output end of the second cylinder.

[0010] A further improvement of this utility model is that: a second solenoid valve is provided on the surface of the piston, a vacuum pump is fixedly connected to the top of the storage tank, the suction port of the vacuum pump is connected to the top of the inner cavity of the storage tank through a pipe, and a pressure sensor is provided on the top of the piston.

[0011] A further improvement of the present invention is that the quantitative filling mechanism further includes a flow sensor, a third solenoid valve is provided at the bottom of the flow sensor, and the bottom of the flow sensor is fixedly connected to the top of the connector.

[0012] A further improvement of this utility model is that: the top of the third solenoid valve is fixedly connected to the bottom of the connector; the interior of the flow sensor is connected to the bottom of the storage tank cavity through a pipe; the interior of the flow sensor is connected to the interior of the third solenoid valve; and a filling port is provided below the third solenoid valve.

[0013] A further improvement of this utility model is that: a spring is fixedly connected to the inner wall of the filling port, a top block is fixedly connected to the bottom of the spring, a sealing gasket is provided on the surface of the top block, the bottom of the sealing gasket overlaps with the inner wall of the filling port, and the bottom of the top block abuts against the top of the cross-shaped top piece.

[0014] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0015] This invention provides a quantitative filling structure for peritoneal dialysis fluid. Through the design of a de-aeration storage mechanism, the storage tank integrates a vacuum pump and piston assembly. By evacuating the tank and reducing the internal pressure, air bubbles are expelled. A pressure sensor monitors the process in real time to ensure effective de-aeration. A second solenoid valve on the piston surface controls the liquid flow pressure, preventing the formation of new air bubbles and ensuring bubble-free filling of the dialysis fluid from the source. Simultaneously, a flow sensor monitors the liquid flow rate in real time, linking with a third solenoid valve to precisely control the filling volume. Combined with a third cylinder to adjust the filling port height, this forms a quantitative system of "dynamic monitoring + precise control," significantly reducing the dosage error rate of traditional structures. Furthermore, the first cylinder drives a clamping plate with a rubber pad, which, along with a guide rod, slides and positions the container, achieving rapid and precise fixation, making it easier to use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2This is a bottom view of the structure of this utility model;

[0018] Figure 3 This is a side view of the present invention.

[0019] Figure 4 This is an exploded structural diagram of the bubble-removing storage mechanism of this utility model.

[0020] Figure 5 This is a schematic diagram of the quantitative filling mechanism of this utility model;

[0021] Figure 6 This is a cross-sectional view of the filling port structure of this utility model.

[0022] In the diagram: 11. Support frame; 12. Positioning frame; 13. First cylinder; 14. Clamping plate; 15. Rubber pad; 16. Guide rod; 17. Filling container; 18. Cross top piece; 21. Storage tank; 22. Liquid inlet; 23. First solenoid valve; 24. Second cylinder; 25. Piston; 26. Second solenoid valve; 27. Vacuum pump; 28. Pressure sensor; 31. Third cylinder; 32. Connector; 33. Flow sensor; 34. Third solenoid valve; 35. Filling port; 36. Spring; 37. Top block; 38. Sealing gasket. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to embodiments:

[0024] Example 1

[0025] like Figure 1-6 As shown, this utility model provides a peritoneal dialysis fluid quantitative filling structure, including a support mechanism, which includes a support frame 11, a positioning frame 12 fixedly connected to the bottom of the inner cavity of the support frame 11, a first cylinder 13 fixedly connected to the surface of the positioning frame 12, and a clamping plate 14 fixedly connected to the output end of the first cylinder 13; a de-bubbling storage mechanism, which includes a storage tank 21, an inlet 22 provided on one side of the inner cavity of the storage tank 21, and a first solenoid valve 23 provided inside the inlet 22; and a quantitative filling mechanism, which includes a third cylinder 31, the top of the third cylinder 31 fixedly connected to the top of the inner cavity of the support frame 11, and a connector 32 fixedly connected to the output end of the third cylinder 31.

[0026] In this embodiment, during use, the positioning frame 12 at the bottom of the inner cavity of the support frame 11 provides an initial positioning reference for the filling container. The first cylinder 13 on the surface of the positioning frame 12 drives the clamping plate 14 to move horizontally along the guide rod 16 through the output end. The guide rod 16 is slidably connected to the positioning frame 12 to ensure the stability and accuracy of the clamping plate 14 during translation. When the clamping plate 14 is close to the side wall of the filling container 17, the rubber pad 15 on its surface provides uniform clamping force through elastic contact, which not only prevents the container from shaking but also avoids surface damage caused by rigid clamping. At the same time, during the clamping process, the cross top piece 18 on the inner wall of the filling port at the top of the filling container 17 is simultaneously aligned to be directly below the filling port 35 to complete the positioning.

[0027] Example 2

[0028] like Figure 1-6 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the support mechanism further includes a rubber pad 15, one side of which is fixedly connected to one side of the clamping plate 14. Guide rods 16 are fixedly connected to both ends of the clamping plate 14 near the first cylinder 13. The surface of the guide rods 16 is slidably connected to the interior of the positioning frame 12. A filling container 17 is attached to the bottom of the inner cavity of the rubber pad 15 and the support frame 11. A cross-shaped top piece 18 is provided on the inner wall of the filling port at the top of the filling container 17. In addition to the bubble storage mechanism, a second cylinder 24 is also included. The surface of the second cylinder 24 is fixedly connected to the surface of the storage tank 21. A piston 25 is fixedly connected to the output end of the second cylinder 24. A second solenoid valve 26 is provided on the surface of the piston 25. A vacuum pump 27 is fixedly connected to the top of the storage tank 21. The suction port of the vacuum pump 27 is connected to the top of the inner cavity of the storage tank 21 through a pipe. A pressure sensor 28 is provided on the top of the piston 25.

[0029] In this embodiment, dialysate is injected through the inlet 22 of the storage tank 21. The first solenoid valve 23 controls the on / off state and flow rate of the liquid. After the liquid is injected, the vacuum pump 27 at the top of the storage tank 21 is started, and air is extracted from the tank through the pipeline, so that the internal air pressure drops to the set negative pressure, causing the dissolved bubbles in the liquid to escape and be discharged. At this time, the second cylinder 24 drives the piston 25 to move downward, applying a constant pressure to the liquid. The second solenoid valve 26 on the surface of the piston 25 cooperates to adjust the liquid flow rate to avoid pressure fluctuations that generate new bubbles. The air pressure sensor 28 at the top of the piston 25 monitors the air pressure inside the tank in real time to ensure that the defoaming process is carried out in a stable negative pressure environment.

[0030] Example 3

[0031] like Figure 1-6As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the quantitative filling mechanism further includes a flow sensor 33, a third solenoid valve 34 is provided at the bottom of the flow sensor 33, the bottom of the flow sensor 33 is fixedly connected to the top of the connector 32, the top of the third solenoid valve 34 is fixedly connected to the bottom of the connector 32, the interior of the flow sensor 33 is connected to the bottom of the inner cavity of the storage tank 21 through a pipe, the interior of the flow sensor 33 is connected to the interior of the third solenoid valve 34, a filling port 35 is provided below the third solenoid valve 34, a spring 36 is fixedly connected to the inner wall of the filling port 35, a top block 37 is fixedly connected to the bottom of the spring 36, a sealing gasket 38 is provided on the surface of the top block 37, the bottom of the sealing gasket 38 overlaps with the inner wall of the filling port 35, and the bottom of the top block 37 abuts against the top of the cross top member 18.

[0032] In this embodiment, after the degassing is completed, the third cylinder 31 is fixed to the top of the inner cavity of the support frame 11. The output connector 32 drives the flow sensor 33, the third solenoid valve 34 and the filling port 35 to move vertically. When the filling port 35 descends to contact the top of the filling container 17, the top block 37 on the inner wall of the filling port 35 is pushed upward by the cross top piece 18 of the container, compressing the spring 36 and pushing open the sealing gasket 38, opening the liquid channel. The dialysate in the storage tank 21 flows into the flow sensor 33 through the pipeline, and the flow data is monitored in real time. When the cumulative flow is close to the preset value, the third solenoid valve 34 automatically reduces the opening, switching from high-speed filling to low-speed precise replenishment, until the target filling volume is reached and then the solenoid valve is closed to cut off the liquid path. The third cylinder 31 synchronously drives the filling port 35 to reset, the spring 36 pushes the top block 37 back down, and the sealing gasket 38 re-attaches to the inner wall of the filling port 35 to achieve quantitative filling.

[0033] The working principle of this peritoneal dialysis fluid quantitative filling structure will be explained in detail below.

[0034] like Figure 1-6As shown, during use, the positioning frame 12 at the bottom of the inner cavity of the support frame 11 provides an initial positioning reference for the filling container. The first cylinder 13 on the surface of the positioning frame 12 drives the clamping plate 14 to move horizontally along the guide rod 16 through its output end. The guide rod 16 is slidably connected to the positioning frame 12 to ensure the stability and accuracy of the clamping plate 14 during translation. When the clamping plate 14 is close to the side wall of the filling container 17, the rubber pad 15 on its surface provides a uniform clamping force through elastic contact, which not only prevents the container from shaking but also avoids surface damage caused by rigid clamping. During the process, the cross-shaped top piece 18 on the inner wall of the filling port at the top of the filling container 17 is simultaneously aligned to be directly below the filling port 35, completing the positioning. Subsequently, the dialysate is injected through the inlet 22 of the storage tank 21. The first solenoid valve 23 controls the liquid inlet flow and the liquid flow rate. After the liquid is injected, the vacuum pump 27 at the top of the storage tank 21 is started, and air is extracted from the tank through the pipeline, causing the internal air pressure to drop to the set negative pressure, which causes the dissolved air bubbles in the liquid to escape and be discharged. At this time, the second cylinder 24 drives the piston 25 to move downward, applying a constant pressure to the liquid. The piston 25... The second solenoid valve 26 on the surface works in conjunction with the liquid flow rate to prevent pressure fluctuations from generating new bubbles. The air pressure sensor 28 on the top of the piston 25 monitors the air pressure inside the tank in real time to ensure that the defoaming process is carried out in a stable negative pressure environment. After the defoaming is completed, the third cylinder 31 is fixed to the top of the inner cavity of the support frame 11. Through the connector 32 at the output end, it drives the flow sensor 33, the third solenoid valve 34, and the filling port 35 to move vertically. When the filling port 35 descends to contact the top of the filling container 17, the top block 37 on the inner wall of the filling port 35 is pushed by the cross-shaped top of the container. When component 18 is pushed upward, it compresses spring 36 and pushes open sealing gasket 38, opening the liquid channel. Dialysis fluid in storage tank 21 flows into flow sensor 33 through pipeline, monitoring flow data in real time. When the cumulative flow approaches the preset value, third solenoid valve 34 automatically reduces its opening, switching from high-speed filling to low-speed precise replenishment until the target filling volume is reached. Then, the solenoid valve closes, cutting off the liquid path. Third cylinder 31 synchronously drives filling port 35 to reset, spring 36 pushes top block 37 back down, and sealing gasket 38 re-fits the inner wall of filling port 35, realizing quantitative filling.

[0035] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A peritoneal dialysis solution dosing and filling structure, characterized by: include The support mechanism includes a support frame (11), a positioning frame (12) is fixedly connected to the bottom of the inner cavity of the support frame (11), a first cylinder (13) is fixedly connected to the surface of the positioning frame (12), and a clamping plate (14) is fixedly connected to the output end of the first cylinder (13). The de-bubbling storage mechanism includes a storage tank (21), and a liquid inlet (22) is provided on one side of the inner cavity of the storage tank (21). A first solenoid valve (23) is provided inside the liquid inlet (22). A quantitative filling mechanism includes a third cylinder (31), the top of which is fixedly connected to the top of the inner cavity of the support frame (11), and a connector (32) is fixedly connected to the output end of the third cylinder (31).

2. The peritoneal dialysis solution dosing and filling structure according to claim 1, characterized in that: The support mechanism also includes a rubber pad (15), one side of which is fixedly connected to one side of the clamping plate (14). The clamping plate (14) has guide rods (16) fixedly connected to both ends of the side near the first cylinder (13). The surface of the guide rods (16) is slidably connected to the inside of the positioning frame (12).

3. The peritoneal dialysis solution dosing and filling structure according to claim 2, characterized in that: The bottom of the inner cavity of the support frame (11) is connected to a filling container (17), and the inner wall of the filling port at the top of the filling container (17) is provided with a cross-shaped top piece (18).

4. The peritoneal dialysis solution dosing and filling structure according to claim 1, characterized in that: The debubbling storage mechanism also includes a second cylinder (24), the surface of which is fixedly connected to the surface of the storage tank (21), and a piston (25) is fixedly connected to the output end of the second cylinder (24).

5. The peritoneal dialysis solution dosing and filling structure according to claim 4, characterized in that: The piston (25) is provided with a second solenoid valve (26), the top of the storage tank (21) is fixedly connected with a vacuum pump (27), the air extraction port of the vacuum pump (27) is connected to the top of the inner cavity of the storage tank (21) through a pipe, and the top of the piston (25) is provided with a pressure sensor (28).

6. The peritoneal dialysis solution dosing and filling structure according to claim 1, characterized in that: The quantitative filling mechanism also includes a flow sensor (33), and a third solenoid valve (34) is provided at the bottom of the flow sensor (33). The bottom of the flow sensor (33) is fixedly connected to the top of the connector (32).

7. The peritoneal dialysis solution dosing and filling structure according to claim 6, characterized in that: The top of the third solenoid valve (34) is fixedly connected to the bottom of the connector (32). The inside of the flow sensor (33) is connected to the bottom of the inner cavity of the storage tank (21) through a pipe. The inside of the flow sensor (33) is connected to the inside of the third solenoid valve (34). A filling port (35) is provided below the third solenoid valve (34).

8. The peritoneal dialysis solution dosing and filling structure according to claim 7, characterized in that: A spring (36) is fixedly connected to the inner wall of the filling port (35), and a top block (37) is fixedly connected to the bottom of the spring (36). A sealing gasket (38) is provided on the surface of the top block (37), the bottom of the sealing gasket (38) overlaps with the inner wall of the filling port (35), and the bottom of the top block (37) abuts against the top of the cross top piece (18).

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