Peritoneal dialysis solution filtering device

By installing an alert structure between the upper and lower shells of the peritoneal dialysis fluid filtration device, the problem of unstable connection was solved, ensuring the device's sealing and filtration effect, and reducing the probability of false alarms.

CN224167097UActive Publication Date: 2026-04-28BEIJING CHILDRENS HOSPITAL AFFILIATED TO CAPITAL MEDICAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BEIJING CHILDRENS HOSPITAL AFFILIATED TO CAPITAL MEDICAL UNIV
Filing Date
2025-08-22
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

The connection between the upper and lower parts of the existing peritoneal dialysis fluid filtration device is not stable, which affects the sealing and filtration effect, and makes it impossible to know the connection status in a timely manner.

Method used

A peritoneal dialysis fluid filtration device was designed, which adopts a detachable connection between the upper and lower shells, and an alert structure is set between the upper and lower shells, including mounting ears, movable cylinder, contact switch, alarm and power supply. The loosening is alerted through electrical connection to ensure the connection is stable.

Benefits of technology

It enables timely reminders for maintenance when the upper and lower housings become loose, ensuring the sealing and filtration effect of the filter device and reducing the probability of false alarms.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a peritoneal dialysis solution filtering device, which belongs to the technical field of peritoneal dialysis and comprises a device body, the device body comprises an upper shell and a lower shell, and the upper shell is detachably connected with the lower shell; the upper shell and the lower shell are provided with reminding structures; the reminding structure comprises an installation lug installed on the upper shell and an extrusion plate installed on the lower shell, the extrusion plate is located under the installation lug, a movable barrel is arranged on the installation lug, a power source is arranged in the movable barrel, a contact switch is installed at the lower end of the movable barrel, and an alarm is installed on the upper shell. By arranging the reminding structure, if the upper shell and the lower shell are loosened, the contact switch is not extruded by the extrusion plate, and at the moment, the contact switch controls the contact switch to sound, so that the effect of quickly reminding a worker to technically find that the upper part and the lower part of the peritoneal dialysis solution filtering device are loosened is achieved, and the worker can conveniently maintain the peritoneal dialysis solution filtering device; the filtering effect is prevented from being influenced.
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Description

Technical Field

[0001] This utility model relates to the field of peritoneal dialysis technology, specifically to a peritoneal dialysis fluid filtration device. Background Technology

[0002] Peritoneal dialysis fluid is the core medical product in peritoneal dialysis treatment. It is used to replace kidney function, remove metabolic waste, excess water and electrolytes from the body, and maintain homeostasis.

[0003] Peritoneal dialysis fluid needs to be used in conjunction with a peritoneal dialysis fluid filtration device. Currently, in order to facilitate the replacement of the internal filter element, the peritoneal dialysis fluid filtration device is generally set up as an upper and lower part. At this time, the two parts are directly connected by connectors such as bolts. During use, it is not possible to know the stability of the connection between the upper and lower parts of the peritoneal dialysis fluid filtration device in time, which affects the sealing of the peritoneal dialysis fluid filtration device and thus affects the filtration effect.

[0004] To address the aforementioned issues, this application proposes a peritoneal dialysis fluid filtration device. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a peritoneal dialysis fluid filtration device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a peritoneal dialysis fluid filtration device.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a peritoneal dialysis fluid filtration device, including a device body, the device body including an upper shell and a lower shell, the upper shell and the lower shell being detachably connected;

[0008] The upper and lower shells are equipped with reminder structures;

[0009] The reminder structure includes a mounting ear mounted on the upper shell and a pressing plate mounted on the lower shell. The pressing plate is located directly below the mounting ear. A movable cylinder is provided on the mounting ear. A power source is provided inside the movable cylinder. A contact switch is installed at the lower end of the movable cylinder. An alarm is installed on the upper shell. The alarm, the contact switch, and the power source are electrically connected.

[0010] Preferably, both the upper and lower shells are provided with through mounting holes, and bolts are inserted into the upper and lower shells through the mounting holes. The bolts are threaded with nuts, and the mounting holes, bolts, and nuts are used to connect and fix the upper and lower shells.

[0011] Preferably, a threaded rod is rotatably connected to the mounting ear, one end of the threaded rod is provided with a rotating block, a through hole is provided through the mounting ear, the movable cylinder is movably inserted into the through hole, a connecting block is installed on the movable cylinder, and the outer side of the threaded rod is threadedly connected to the inner wall of the connecting block. By setting the threaded rod, rotating block, through hole and connecting block, the contact switch can be finely adjusted.

[0012] Preferably, the power supply is placed inside a movable cylinder, and a threaded cap is threaded onto the movable cylinder. By providing the threaded cap, it is easy to remove and replace the power supply.

[0013] Preferably, a bearing is installed on the mounting ear, and the outer side of the bottom end of the threaded rod is connected to the inner ring of the bearing. By setting the bearing, the rotation of the threaded rod is supported and assisted.

[0014] Preferably, the top end of the threaded rod is provided with a slot, and a plug is installed on one side of the rotating block. The plug is adapted to the slot. By setting the slot and the plug, it is convenient to disassemble and assemble the rotating block.

[0015] Preferably, the upper shell has a placement groove, the rotating block is adapted to the placement groove, the upper shell is fitted with a magnetic sheet through the placement groove, the rotating block is made of iron, and the magnetic sheet magnetically attracts and adsorbs the rotating block. By setting the placement groove and the magnetic sheet, the rotating block is attracted and fixed.

[0016] The beneficial effects of this utility model are:

[0017] By setting up a reminder structure, if there is looseness between the upper and lower shells, the contact switch will not be squeezed by the compression plate. At this time, the contact switch will sound, thus quickly reminding the staff to detect that the upper and lower parts of the peritoneal dialysis fluid filtration device are loose, making it easier for the staff to carry out maintenance and minimizing the impact on the filtration effect.

[0018] By rotating the rotating block, the contact switch is moved, thereby achieving the effect of fine-tuning the contact switch to ensure its sensitivity.

[0019] Pull the insert block out of the slot, then place the rotating block in the placement slot. Use the magnetic sheet to hold the rotating block in place, which prevents accidental activation of the rotating block from causing the threaded rod to rotate more easily, thereby reducing the probability of the alarm sounding falsely. Attached Figure Description

[0020] Figure 1 This is a schematic diagram illustrating the overall structure of the device.

[0021] Figure 2 This utility model is a schematic diagram showing the structure of the movable cylinder and its related parts;

[0022] Figure 3 This utility model is a schematic diagram illustrating the structure of a threaded rod and its related parts;

[0023] Figure 4 This utility model is a schematic diagram showing the structure of the placement slot and its related parts.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Device body; 101. Upper shell; 102. Lower shell; 103. Mounting hole; 104. Bolt; 105. Nut;

[0026] 2. Reminder structure; 201. Mounting ear; 202. Through hole; 203. Movable cylinder; 204. Bearing; 205. Threaded rod; 206. Rotating block; 207. Power supply; 208. Threaded cover; 209. Slot; 210. Insert block; 211. Alarm; 212. Extrusion plate; 213. Contact switch; 214. Connecting block;

[0027] 3. Placement slot; 4. Magnetic sheet. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Reference Figure 1 and Figure 2A peritoneal dialysis fluid filtration device includes a device body 1, which comprises an upper shell 101 and a lower shell 102, detachably connected. Both the upper shell 101 and the lower shell 102 have through mounting holes 103. Bolts 104 are inserted into the upper shell 101 and the lower shell 102 through the mounting holes 103, and nuts 105 are threaded onto the bolts 104. The bolts 104 and nuts 105 are used to assemble and disassemble the upper shell 101 and the lower shell 102. A sealing ring is provided between the upper shell 101 and the lower shell 102 for sealing the space between them; the sealing ring is existing technology. A reminder structure 2 is provided on the upper shell 101 and the lower shell 102. The reminder structure 2 includes a mounting ear 201 mounted on the upper shell 101 and a compression plate 212 mounted on the lower shell 102. 212 is located directly below the mounting ear 201. A movable cylinder 203 is provided on the mounting ear 201. A power supply 207 is provided inside the movable cylinder 203. A contact switch 213 is installed at the lower end of the movable cylinder 203. An alarm 211 is installed on the upper shell 101. The alarm 211, contact switch 213 and power supply 207 are electrically connected. According to the above technical solution, when the upper shell 101 and the lower shell 102 are sealed stably and securely, the contact switch 213 is in a state of being squeezed by the compression plate 212. If there is loosening between the upper shell 101 and the lower shell 102, the contact switch 213 is not squeezed by the compression plate 212. At this time, the contact switch 213 controls the contact switch 213 to sound, thereby achieving the effect of quickly reminding the staff to discover that the upper and lower parts of the peritoneal dialysis fluid filtration device are loose, which facilitates the staff to carry out maintenance and minimizes the impact on the filtration effect.

[0030] Among them, the contact switch 213 is a D2HW model manufactured by Omron Automation (China) Co., Ltd., the alarm 211 is a Sirene 1000 model manufactured by Siemens Industrial Automation Co., Ltd., and the power supply 207 is a No. 7 lithium battery manufactured by Panasonic Energy (Wuxi) Co., Ltd. The circuit connection between the three can be reasonably set according to the actual situation, and the signal transmission method of the three is the existing technology.

[0031] Reference Figure 1 and Figure 3A threaded rod 205 is rotatably connected to the mounting ear 201. One end of the threaded rod 205 is provided with a rotating block 206. A through hole 202 is provided through the mounting ear 201. A movable cylinder 203 is movably inserted into the through hole 202. A connecting block 214 is installed on the movable cylinder 203. The outer side of the threaded rod 205 is threadedly connected to the inner wall of the connecting block 214. According to the above technical solution, specifically, by rotating the rotating block 206, the threaded rod 205 is rotated. The rotation of the threaded rod 205 drives the connecting block 214 to move. The movement of the connecting block 214 drives the movement of the movable cylinder 203. The movement of the movable cylinder 203 drives the movement of the contact switch 213, thereby achieving the effect of fine adjustment of the contact switch 213 to ensure the sensitivity of the contact switch 213.

[0032] Reference Figure 2 The power supply 207 is placed inside the movable cylinder 203, and the movable cylinder 203 is threadedly connected to a threaded cover 208, which facilitates the disassembly and replacement of the power supply 207.

[0033] Reference Figure 3 A bearing 204 is mounted on the mounting ear 201. The outer side of the bottom end of the threaded rod 205 is connected to the inner ring of the bearing 204. The bearing 204 is used to support the threaded rod 205 and assist its rotation.

[0034] Reference Figure 3 and Figure 4 The threaded rod 205 has a slot 209 at its top end. A plug 210 is installed on one side of the rotating block 206. The plug 210 is compatible with the slot 209. The slot 209 is square and the plug 210 is square. Inserting the plug 210 into the slot 209 facilitates the rotation of the rotating block 206, thereby driving the rotation of the threaded rod 205. The upper shell 101 has a placement groove 3. The rotating block 206 is compatible with the placement groove 3. A magnetic sheet 4 is installed on the upper shell 101 through the placement groove 3. The rotating block 206 is made of iron. The magnetic sheet 4 magnetically attracts the rotating block 206. The plug 210 is pulled out from the slot 209 and then placed in the placement groove 3. The magnetic sheet 4 attracts and fixes the rotating block 206, which avoids accidental activation of the rotating block 206, which would make it easier to drive the threaded rod 205 to rotate, thereby reducing the probability of the alarm 211 sounding falsely.

[0035] Working principle:

[0036] If the upper shell 101 and lower shell 102 of the peritoneal dialysis fluid filtration device become loose, the contact switch 213 will not be squeezed by the compression plate 212. At this time, the contact switch 213 will sound, thereby quickly reminding the staff to detect that the upper and lower parts of the peritoneal dialysis fluid filtration device are loose, which facilitates the staff to carry out maintenance and avoids affecting the filtration effect as much as possible.

[0037] The peritoneal dialysis fluid filtration device rotates the rotating block 206, which in turn drives the threaded rod 205 to rotate. The rotation of the threaded rod 205 drives the connecting block 214 to move, which in turn drives the movable cylinder 203 to move. The movement of the movable cylinder 203 drives the contact switch 213 to move, thereby achieving the effect of fine-tuning the contact switch 213 to ensure its sensitivity.

[0038] In this peritoneal dialysis fluid filtration device, the insert 210 is pulled out of the slot 209, and then the rotating block 206 is placed in the placement slot 3. The rotating block 206 is fixed by adsorption with the magnetic sheet 4, which achieves the effect of avoiding accidental contact with the rotating block 206, which would make it easier to drive the threaded rod 205 to rotate, thereby reducing the probability of the alarm 211 sounding falsely.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A peritoneal dialysis fluid filtration device, comprising a device body (1), characterized in that, The device body (1) includes an upper shell (101) and a lower shell (102), and the upper shell (101) and the lower shell (102) are detachably connected; The upper shell (101) and the lower shell (102) are provided with a reminder structure (2); The reminder structure (2) includes a mounting ear (201) mounted on the upper shell (101) and a pressing plate (212) mounted on the lower shell (102). The pressing plate (212) is located directly below the mounting ear (201). A movable cylinder (203) is provided on the mounting ear (201). A power supply (207) is provided inside the movable cylinder (203). A contact switch (213) is installed at the lower end of the movable cylinder (203). An alarm (211) is installed on the upper shell (101). The alarm (211), the contact switch (213), and the power supply (207) are electrically connected.

2. The peritoneal dialysis fluid filtration device according to claim 1, characterized in that, The upper shell (101) and the lower shell (102) are both provided with mounting holes (103). Bolts (104) are inserted into the upper shell (101) and the lower shell (102) through the mounting holes (103). Nuts (105) are threaded onto the bolts (104).

3. The peritoneal dialysis fluid filtration device according to claim 1, characterized in that, A threaded rod (205) is rotatably connected to the mounting ear (201). A rotating block (206) is provided at one end of the threaded rod (205). A through hole (202) is provided through the mounting ear (201). The movable cylinder (203) is movably inserted into the through hole (202). A connecting block (214) is installed on the movable cylinder (203). The outer side of the threaded rod (205) is threadedly connected to the inner wall of the connecting block (214).

4. The peritoneal dialysis fluid filtration device according to claim 1, characterized in that, The power source (207) is placed inside the movable cylinder (203), and the movable cylinder (203) is threadedly connected to a threaded cap (208).

5. A peritoneal dialysis fluid filtration device according to claim 3, characterized in that, A bearing (204) is mounted on the mounting lug (201), and the outer side of the bottom end of the threaded rod (205) is connected to the inner ring of the bearing (204).

6. A peritoneal dialysis fluid filtration device according to claim 3, characterized in that, The threaded rod (205) has a slot (209) at its top end, and a plug (210) is installed on one side of the rotating block (206), which is compatible with the slot (209).

7. A peritoneal dialysis fluid filtration device according to claim 3, characterized in that, The upper shell (101) is provided with a placement groove (3), the rotating block (206) is adapted to the placement groove (3), the upper shell (101) is equipped with a magnetic sheet (4) through the placement groove (3), the rotating block (206) is made of iron, and the magnetic sheet (4) magnetically attracts the rotating block (206).