A dry powder cartridge for hemodialysis

Abstract

This utility model discloses a dry powder cartridge for hemodialysis, comprising: a cartridge body and a cover body; a guide tube is provided at the axis of the cartridge body, and a sieving ring is provided at the bottom end of the guide tube; a filter hole is provided on the sieving ring; a liquid guide tube communicating with the guide tube is also provided on the sieving ring; the liquid guide tubes are multiple sets and arranged in a ring on the sieving ring. In this utility model, after filling the cartridge body with dialysis dry powder, the connecting pipe on the cover body is inserted into the connector, and the heat-sealing ring is heated to achieve a sealed connection between the cartridge body and the cover body. Liquid is injected into the guide tube through the inlet pipe, and the aqueous solution inside the guide tube is discharged from the bottom of the cartridge body through the liquid guide tube. All sets of liquid guide tubes are arc-shaped, and each set of liquid guide tubes has a drain hole on one side facing its center, allowing water to dissolve in the bottom of the cartridge body in a ring flow, fully mixing the aqueous solution with the dialysis powder at the bottom to form a dialysis concentrate, which finally flows through the filter hole into the drain tube and is discharged.

Description

Technical Field

[0001] This utility model relates to the field of dry powder cartridge technology, and in particular to a dry powder cartridge for hemodialysis. Background Technology

[0002] Currently, the most commonly used dialysis treatment equipment includes a dialysis machine and a dry powder cartridge for hemodialysis connected to the dialysis machine. The hemodialysis concentrate is stored inside the dry powder cartridge. B-solution dry powder is one of the most common hemodialysis concentrates used clinically. Compared to B-fluid, its advantages lie in its smaller size, ease of transportation, and lower cost. However, it has disadvantages such as the continuous injection of reverse osmosis water into the dry powder cartridge during use and the partial dissolution of dialysis powder. Because the dialysis powder is in excess, most of it remains undissolved, and this undissolved powder tends to clump, slowing down the dissolution rate. Simultaneously, it hinders the outflow of the hemodialysis concentrate, resulting in a lower ion concentration in the concentrate and compromising the safety and adequacy of dialysis. Existing dry powder cartridges mainly consist of a bottle body and a cap, which not only have poor sealing but also fail to filter the dialysis solution. Utility Model Content

[0003] The purpose of this invention is to address the aforementioned shortcomings by providing a dry powder cartridge for hemodialysis.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a dry powder cartridge for hemodialysis, comprising:

[0005] Cylinder and lid;

[0006] A guide tube is provided at the axis of the cylinder, and a screening ring is provided at the bottom end of the guide tube;

[0007] The screening ring is provided with filter holes;

[0008] The screening ring is also provided with a liquid guiding tube that communicates with the guide tube;

[0009] The liquid guiding tubes are in multiple groups and are arranged in a ring on the screening ring, and each liquid guiding tube has inclined drainage holes in the same direction.

[0010] Furthermore, the cylinder and the cover are respectively provided with a drain pipe and a liquid inlet pipe;

[0011] The drain pipe and inlet pipe are coaxially arranged with the guide pipe.

[0012] Furthermore, the cover is also provided with a connecting pipe, and the top end of the guide pipe is provided with a connector;

[0013] The connecting pipe is inserted into the connector to allow the guide tube to communicate with the inlet tube.

[0014] Furthermore, the inner wall of the connector is provided with circumferentially distributed sealing grooves, and the outer surface of the connecting pipe is provided with sealing ribs corresponding to the sealing grooves.

[0015] Furthermore, all of the aforementioned liquid guiding tubes are arc-shaped;

[0016] Each of the multiple sets of liquid guide tubes has a drain hole on one side facing its center, so that the internal solution flows in a ring.

[0017] Furthermore, both the cylinder and the cover are provided with corresponding heat-sealing rings for heat sealing.

[0018] The beneficial effects of this utility model are reflected in:

[0019] In this invention, after filling the cylinder with dialysis powder, the connecting pipe on the cover is inserted into the connector, and the heat-sealing ring is heated to achieve a sealed connection between the cylinder and the cover. Liquid is injected into the guide pipe through the inlet pipe, and the aqueous solution inside the guide pipe is discharged at the bottom of the cylinder through the liquid guide pipe. The multiple sets of liquid guide pipes are all arc-shaped, and each set of liquid guide pipes has a drain hole on one side facing its center, which allows water to dissolve in the bottom of the cylinder in a ring flow, fully mixing the aqueous solution with the dialysis powder at the bottom to form a dialysis concentrate, which finally flows through the filter hole into the drain pipe and is discharged. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention;

[0021] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the screening ring structure of this utility model;

[0023] Figure 4 This is a top view of the cylindrical structure of this utility model.

[0024] In the picture:

[0025] 1. Cylinder body; 11. Drain pipe;

[0026] 2. Cover; 21. Inlet pipe; 22. Connecting pipe;

[0027] 3. Guide tube; 31. Connector;

[0028] 4. Screening ring; 41. Filter hole; 42. Liquid guide tube. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0030] Please see Figure 1-4 This utility model discloses a dry powder cartridge for hemodialysis, comprising:

[0031] The cylinder 1 and the cover 2 are provided with corresponding heat-sealing rings on their circumference for heat sealing to seal the dialysis powder filling.

[0032] A guide pipe 3 is provided at the axis of the cylinder 1, and a screening ring 4 is provided at the bottom end of the guide pipe 3;

[0033] The sieving ring 4 is provided with filter holes 41. It should be noted that the pore size of the filter holes 41 is smaller than the particle size of the dialysis powder to avoid the dialysis powder from overflowing.

[0034] The screening ring 4 is also provided with a liquid guiding pipe 42 that is connected to the guide pipe 3;

[0035] The liquid guiding tubes 42 are in multiple groups and are distributed in a ring on the sieve ring 4. Each liquid guiding tube 42 has inclined drainage holes in the same direction. Similarly, the diameter of the drainage holes is smaller than the particle size of the dialysis powder to avoid the dialysis powder from overflowing.

[0036] It should be noted that the cylinder 1 and the cover 2 are respectively provided with a drain pipe 11 and a liquid inlet pipe 21;

[0037] The drain pipe 11 and the inlet pipe 21 are coaxially arranged with the guide pipe 3.

[0038] Furthermore, the cover 2 is also provided with a connecting pipe 22, and the top end of the guide pipe 3 is provided with a connector 31;

[0039] The connecting pipe 22 is inserted into the connector 31 to connect the guide pipe 3 to the inlet pipe 21.

[0040] With the above structural setup, after filling the cylinder 1 with dialysis dry powder, insert the connecting pipe 22 on the cover 2 into the connector 31 and heat the heat sealing ring to achieve a sealed connection between the cylinder 1 and the cover 2.

[0041] Then, during use, liquid is injected into the guide tube 3 through the inlet pipe 21. The aqueous solution inside the guide tube 3 is discharged at the bottom of the cylinder 1 through the guide tube 42. Since the multiple sets of guide tubes 42 are all arc-shaped, and each set of guide tubes 42 has a drain hole on one side facing its center, the water can be dissolved at the bottom of the cylinder 1 in a ring flow, which fully mixes and blends the aqueous solution with the dialysis powder at the bottom to form a uniform dialysis concentrate, avoiding the phenomenon of dry powder material clumping. Finally, it flows into the drain pipe 11 through the filter hole 41 and is discharged.

[0042] It should be further noted that, in order to prevent the aqueous solution from overflowing between the connecting pipe 22 and the connector 31, a circumferentially distributed sealing groove is provided on the inner wall of the connector 31, and a sealing rib corresponding to the sealing groove is provided on the outer surface of the connecting pipe 22, so as to strengthen the sealing performance at the connection between the connecting pipe 22 and the connector 31.

[0043] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0044] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0045] Additionally, "multiple" refers to two or more.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dry powder cartridge for hemodialysis, characterized in that, include: Cylinder (1) and cover (2); A guide tube (3) is provided at the axis of the cylinder (1), and a screening ring (4) is provided at the bottom end of the guide tube (3); The screening ring (4) is provided with filter holes (41); The screening ring (4) is also provided with a liquid guide tube (42) that is connected to the guide tube (3); The liquid guiding tubes (42) are in multiple groups and are arranged in a ring on the screening ring (4). Each liquid guiding tube (42) has inclined drainage holes in the same direction.

2. The dry powder cartridge for hemodialysis according to claim 1, characterized in that: The cylinder (1) and the cover (2) are respectively provided with a drain pipe (11) and a liquid inlet pipe (21); The drain pipe (11) and the inlet pipe (21) are coaxially arranged with the guide pipe (3).

3. The dry powder cartridge for hemodialysis according to claim 2, characterized in that: The cover (2) is also provided with a connecting pipe (22), and the top end of the guide pipe (3) is provided with a connector (31); The connecting pipe (22) is inserted into the connector (31) to connect the guide pipe (3) to the inlet pipe (21).

4. The dry powder cartridge for hemodialysis according to claim 3, characterized in that: The inner wall of the connector (31) is provided with circumferentially distributed sealing grooves, and the outer surface of the connecting pipe (22) is provided with sealing ribs corresponding to the sealing grooves.

5. The dry powder cartridge for hemodialysis according to claim 1, characterized in that: All of the aforementioned liquid guiding tubes (42) are arc-shaped; The multiple sets of liquid guide tubes (42) have drainage holes on one side facing their center to allow the internal solution to flow in an annular pattern.

6. The dry powder cartridge for hemodialysis according to claim 1, characterized in that: Both the cylinder (1) and the cover (2) are provided with corresponding heat-sealing rings for heat sealing.

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