Air filtering device for hemodialysis machine

Abstract

The utility model discloses an air filtering device for a hemodialysis machine, and relates to the field of hemodialysis. The air filtering device for the hemodialysis machine comprises a dialysis tube and a filtering tube, a connecting tube is inserted between the dialysis tube and the filtering tube, the filtering tube is in threaded connection with a connecting seat, the connecting seat is provided with a communicating unit and a resetting unit, the communicating unit is communicated with a communicating tube through a sliding tube, and the resetting unit is used for positioning the sliding tube. According to the air filtering device for the hemodialysis machine, when dialysate enters the filtering pipe, air in the dialysate pushes the sliding pipe to move, so that the sliding pipe is communicated with the communicating pipe, redundant air is exhausted outwards, the situation that bubbles are mixed in the dialysate is avoided, and accidents are reduced; and the sliding pipe restores to the original position, so that the sliding pipe is separated from the communicating pipe, and external air is prevented from entering the filter pipe to cause pollution.

Description

Technical Field

[0001] The utility model relates to the technical field of hemodialysis, in particular to a gas filtering device for a hemodialysis machine. Background Technique

[0002] Hemodialysis is one of the renal replacement treatment methods for patients with acute and chronic renal failure. It replaces part of the renal function and has the functions of removing excessive water in the body, removing metabolic wastes in the body, and maintaining electrolyte and acid-base balance.

[0003] At present, the hemodialysis device consists of an arterial side and a venous side. Both the arterial side and the venous side are connected to the dialyzer to remove toxins and excessive water retained in the body, and at the same time supplement the substances required by the body.

[0004] During the circulation process of the dialysate, small bubbles are mixed in the dialysate. In the prior art, in order to avoid this situation, the dialysate is monitored by an air monitor. When bubbles appear, the bubbles are removed manually. In the prior art, the mixing of small bubbles in the dialysate is effectively prevented by means of monitoring. However, by means of monitoring, it is necessary to cooperate with manual removal of the bubbles. When there are too many bubbles, it will seriously affect the progress of hemodialysis. Therefore, we propose a gas filtering device for a hemodialysis machine. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a gas filtering device for a hemodialysis machine, which solves the problem that the mixing of small bubbles in the dialysate is effectively prevented by means of monitoring. However, by means of monitoring, it is necessary to cooperate with manual removal of the bubbles. When there are too many bubbles, it will seriously affect the progress of hemodialysis.

[0006] To achieve the above object, the utility model is realized by the following technical solutions: A gas filtering device for a hemodialysis machine, including a dialysis tube and a filtering tube. A connecting tube is inserted between the dialysis tube and the filtering tube. A connecting seat is threadedly connected to the filtering tube. The connecting seat is provided with:

[0007] A communicating unit, the communicating unit includes a communicating pipe and a sliding pipe. The sliding pipe is slidably connected to the inner wall of the communicating pipe. The communicating unit is communicated with the communicating pipe through the sliding pipe;

[0008] A reset unit, the reset unit includes a moving seat and a spring. The moving seat is fixedly connected to the sliding pipe. The moving seat is slidably connected to the inner wall of the communicating pipe. The moving seat is fixedly connected to the spring. The spring is fixedly connected to the communicating pipe. The reset unit is used to position the sliding pipe.

[0009] Preferably, a first connection port is fixedly connected to the outer wall of the filter tube. The first connection port is inserted into the connection tube, and the first connection port is connected to the dialysis tube through the connection tube.

[0010] Preferably, a second connection port is fixedly connected to the outer wall of the filter tube. The second connection port is above the first connection port.

[0011] Preferably, a fixed seat is fixedly connected to the inner wall of the filter tube.

[0012] Preferably, a filter element is inserted into the inner wall of the fixed seat.

[0013] Preferably, a sliding rod is slidably connected to the inner wall of the connecting tube. The other end of the sliding rod is fixedly connected to the moving seat.

[0014] Preferably, a limiting block is fixedly connected to the end of the sliding rod outside the connecting tube. The limiting block is in contact with the connecting tube.

[0015] Preferably, an exhaust port is formed in the connecting tube, and a communication port is formed in the sliding tube.

[0016] The utility model discloses a gas filtering device for a hemodialysis machine, and the beneficial effects thereof are as follows:

[0017] In the gas filtering device for the hemodialysis machine, when the dialysis fluid enters the filter tube, the gas in the dialysis fluid pushes the sliding tube to move, so that the sliding tube is communicated with the connecting tube, and the excess gas is discharged outwards, avoiding the situation that the dialysis fluid is mixed with bubbles, reducing the occurrence of accidents. At the same time, the moving seat compresses the spring. When the air in the filter tube is discharged, under the rebound of the spring, the sliding tube is restored to its original position, so that the sliding tube is separated from the connecting tube. When the sliding tube is communicated with the connecting tube, the gas only discharges outwards, avoiding the entry of external air into the filter tube and causing pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 It is a schematic structural diagram of the present utility model;

[0020] Figure 2 It is a schematic structural diagram of the filter tube of the present utility model;

[0021] Figure 3Schematic diagram of the inner wall structure of the filter tube of the present utility model;

[0022] Figure 4 For the present utility model Figure 3 Enlarged view of the connecting pipe in it.

[0023] In the figure: 1, dialysis tube; 2, filter tube; 201, connecting seat; 3, first connection port; 4, second connection port; 5, filter element; 501, fixed seat; 6, communicating pipe; 601, exhaust port; 7, sliding tube; 701, communication port; 8, moving seat; 801, sliding rod; 802, limiting block; 803, spring. Specific embodiments

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0025] The embodiments of the present application provide a gas filtering device for a hemodialysis machine, which solves the problem that by means of monitoring, it is effectively possible to prevent mixed small bubbles in the dialysate, but by means of monitoring, it is necessary to cooperate with manual removal of bubbles. When there are too many bubbles, it will seriously affect the progress of dialysis. When the dialysate enters the filter tube 2, the gas in the dialysate pushes the sliding tube 7 to move, so that the sliding tube 7 communicates with the communicating pipe 6, and the excess gas is discharged outwards, avoiding the situation of mixed bubbles in the dialysate and reducing the occurrence of accidents. At the same time, the moving seat 8 compresses the spring 803. After the air in the filter tube 2 is discharged, under the rebound of the spring 803, the sliding tube 7 is restored to its original position, so that the sliding tube 7 is separated from the communicating pipe 6, so that when the sliding tube 7 communicates with the communicating pipe 6, the gas only discharges outwards, avoiding the entry of external air into the filter tube 2 and causing pollution.

[0026] To better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the specification drawings and specific embodiments.

[0027] The embodiments of the present utility model disclose a gas filtering device for a hemodialysis machine.

[0028] According to the attached Figures 1-4 As shown, it includes a dialysis tube 1 and a filter tube 2. A connecting tube is inserted between the dialysis tube 1 and the filter tube 2. A connecting seat 201 is threadedly connected to the filter tube 2. The dialysate enters through the filter tube 2, and the dialysate enters the dialysis tube 1 through the filter tube 2, and then enters the human body through the dialysis tube 1 for circulation. The connecting seat 201 is provided with:

[0029] The connecting unit includes a connecting pipe 6 and a sliding pipe 7. The sliding pipe 7 is slidably connected to the inner wall of the connecting pipe 6. The connecting unit is connected through the sliding pipe 7 and the connecting pipe 6. When the dialysate enters the filter pipe 2, the gas in the dialysate pushes the sliding pipe 7 to move, so that the sliding pipe 7 is connected to the connecting pipe 6, and the excess gas is discharged outward, avoiding the situation of mixed bubbles in the dialysate and reducing the occurrence of accidents.

[0030] The reset unit includes a moving seat 8 and a spring 803. The moving seat 8 is fixedly connected to the sliding pipe 7. The moving seat 8 is slidably connected to the inner wall of the connecting pipe 6. The moving seat 8 is fixedly connected to the spring 803, and the spring 803 is fixedly connected to the connecting pipe 6. The reset unit is used to position the sliding pipe 7. Through the movement of the gas through the sliding pipe 7 and the moving seat 8, under the movement of the sliding pipe 7, the sliding pipe 7 is connected to the connecting pipe 6, and the gas is discharged. At the same time, the moving seat 8 compresses the spring 803. When the air in the filter pipe 2 is discharged, under the rebound of the spring 803, the sliding pipe 7 is restored to its original position, so that the sliding pipe 7 is separated from the connecting pipe 6, and when the sliding pipe 7 is connected to the connecting pipe 6, the gas only discharges outward, avoiding the entry of external air into the filter pipe 2 and causing pollution.

[0031] A first connection port 3 is fixedly connected to the outer wall of the filter pipe 2. The first connection port 3 is inserted into the connecting pipe, and the first connection port 3 is connected to the dialysis tube 1 through the connecting pipe. The dialysate is transported to the dialysis tube 1 through the first connection port 3.

[0032] A second connection port 4 is fixedly connected to the outer wall of the filter pipe 2. The second connection port 4 is above the first connection port 3. The dialysate is circulated to the filter pipe 2 through the second connection port 4. Since the second connection port 4 is above the first connection port 3, the air in the dialysate floats at this time, so that the air-free dialysate is transported to the dialysis tube 1 through the first connection port 3.

[0033] A fixing seat 501 is fixedly connected to the inner wall of the filter pipe 2.

[0034] A filter element 5 is inserted into the inner wall of the fixing seat 501. The dialysate is filtered through the filter element 5. At this time, the liquid slowly enters the connecting seat 201 through the filter element 5, filling the entire space of the filter pipe 2, and can effectively discharge the gas.

[0035] A sliding rod 801 is slidably connected to the inner wall of the connecting pipe 6. The other end of the sliding rod 801 is fixedly connected to the moving seat 8. When the liquid enters the connecting seat 201, at the same time, the air is filtered into the connecting seat 201, and the air pushes the sliding pipe 7 to move. At this time, the sliding pipe 7 pushes the moving seat 8 to move.

[0036] One end of the sliding rod 801 outside the communicating pipe 6 is fixedly connected with a limit block 802. The limit block 802 is in contact with the communicating pipe 6. Under the movement of the moving seat 8 and the sliding rod 801, the sliding rod 801 pushes the limit block 802 to move, and at the same time, the moving seat 8 compresses the spring 803.

[0037] An exhaust port 601 is provided on the communicating pipe 6, and a communicating port 701 is provided on the sliding pipe 7. When the exhaust port 601 is communicated with the communicating port 701, the air in the connecting seat 201 is discharged outward at this time. When the pressure in the connecting seat 201 becomes smaller and stable, at this time, under the rebound of the spring 803, the sliding pipe 7 is pushed to move, so that the exhaust port 601 is separated from the communicating port 701, thereby enabling the gas to be discharged only outward and preventing external air from entering the filter pipe 2 and causing pollution.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas filtering device for a hemodialysis machine, comprising a dialysis tube (1) and a filtering tube (2), wherein a connecting tube is inserted between the dialysis tube (1) and the filtering tube (2), and is characterized in that, A connection seat (201) is threadedly connected to the filter tube (2), and the connection seat (201) is provided with: A communication unit, which includes a communication pipe (6) and a sliding pipe (7). The sliding pipe (7) is slidably connected to the inner wall of the communication pipe (6), and the communication unit is communicated with the communication pipe (6) through the sliding pipe (7). A reset unit, which includes a moving seat (8) and a spring (803). The moving seat (8) is fixedly connected to the sliding pipe (7), the moving seat (8) is slidably connected to the inner wall of the communication pipe (6), the moving seat (8) is fixedly connected to the spring (803), and the spring (803) is fixedly connected to the communication pipe (6). The reset unit is used to position the sliding pipe (7).

2. The air filter device for a hemodialysis machine according to claim 1, characterized in that, A first connection port (3) is fixedly connected to the outer wall of the filter tube (2). The first connection port (3) is inserted with a connection pipe, and the first connection port (3) is connected to the dialysis tube (1) through the connection pipe.

3. The air filtering device for a hemodialysis machine according to claim 2, characterized in that, A second connection port (4) is fixedly connected to the outer wall of the filter tube (2), and the second connection port (4) is located above the first connection port (3).

4. The air filtering device for a hemodialysis machine according to claim 3, characterized in that, A fixed seat (501) is fixedly connected to the inner wall of the filter tube (2).

5. The air filter device for a hemodialysis machine according to claim 4, wherein A filter element (5) is inserted into the inner wall of the fixed seat (501).

6. The air filtering device for a hemodialysis machine according to claim 1, wherein, A sliding rod (801) is slidably connected to the inner wall of the communication pipe (6), and the other end of the sliding rod (801) is fixedly connected to the moving seat (8).

7. The air filtering device for a hemodialysis machine according to claim 6, characterized in that, A limiting block (802) is fixedly connected to one end of the sliding rod (801) outside the communication pipe (6), and the limiting block (802) is in contact with the communication pipe (6).

8. The air filtering device for a hemodialysis machine according to claim 7, characterized in that An exhaust port (601) is opened on the communication pipe (6), and a communication port (701) is opened on the sliding pipe (7).

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