CN205215817U - Closed type artificial kidney connecting pipe - Google Patents

Abstract

The utility model discloses a closed artificial kidney connecting tube, which comprises ten pipelines, wherein the first pipeline, the second pipeline and the third pipeline are respectively connected with three joints of the first tee; the third pipeline The other end of the third pipeline, one end of the fourth pipeline, the fifth pipeline and the seventh pipeline are respectively connected to the four ports of the cross, or the other end of the third pipeline, one end of the fourth pipeline and the fifth pipeline One end of the seventh pipeline is connected to the middle of the fifth pipeline through the fifth three-way; the other end of the seventh pipeline, one end of the eighth pipeline and one end of the tenth pipeline are respectively connected with the first The three joints of the second and three links are connected; one end of the sixth pipeline, the other end of the eighth pipeline and one end of the ninth pipeline are respectively connected with the three interfaces of the third and three links. The closed artificial kidney connecting tube can simultaneously satisfy the individual preflushing and serial preflushing of the perfusion device and the dialyzer, the combined treatment of the perfusion device and the dialyzer, and the single treatment of the dialyzer, without safety hazards.

Description

Closed Artificial Kidney Connecting Tube

technical field

The utility model relates to a blood purification consumable, in particular to a closed artificial kidney connecting tube.

Background technique

Hemoperfusion and hemodialysis are blood purification technologies that have been rapidly emerging clinically in recent years. The treatment scope has involved kidney disease, acute poisoning, liver disease, critical illness, skin disease and immune disease, etc. With the improvement of people's living standards and the increase of health awareness, blood purification has been widely accepted as a disease treatment method, and the annual usage is increasing.

Currently, dialyzers and perfusion devices are often used in series to treat uremia patients. Usually, combined treatment with hemoperfusion and dialyzer is used first, then the perfusion device is removed after 2 hours, and then dialyzer is used for dialysis for 2 hours. This kind of dialysis treatment can reduce the complications of uremia patients and make up for the defects of simple dialyzer dialysis, which can play a certain positive role, but it often encounters some technical problems in actual operation. For example: (1) The adsorbent in the hemoperfusion device is generally a neutral macroporous adsorbent resin that has been processed by a special process. The hemoperfusion device and the dialyzer are connected in series. Pass through the hemoperfusion device, and then enter the dialyzer through the pipeline, which may cause secondary pollution of the dialyzer by the preflush passing through the perfusion device, and may even affect the effectiveness of the dialyzer. (2) After 2 hours of serial treatment with the perfusion device and the dialyzer, the perfusion device needs to be removed and the dialyzer alone is used for dialysis. During the removal of the pipeline, the connection end of the dialyzer and the end of the patient's dialysis tube must be exposed to the air. Bacteria, fine dust, etc. can easily enter the dialyzer and blood pipeline through the open end to cause pollution or infection, causing unnecessary harm to patients.

Contents of the invention

The technical problem to be solved by the utility model is to provide a closed artificial kidney connecting tube used with a perfusion device and a dialyzer.

In order to achieve the above object, the utility model adopts the following technical solutions:

A closed artificial kidney connecting tube, including ten pipelines; wherein, one end of the first pipeline, the second pipeline and the third pipeline are respectively connected to the three joints of the first tee;

The other end of the third pipeline, one end of the fourth pipeline, one end of the fifth pipeline and one end of the seventh pipeline form an interconnected structure;

The other end of the seventh pipeline, one end of the eighth pipeline and one end of the tenth pipeline are respectively connected to the three joints of the second tee;

One end of the sixth pipeline, the other end of the eighth pipeline and one end of the ninth pipeline are respectively connected to the three interfaces of the third tee.

Wherein preferably, the first three-way is a plug-type three-way that can control flow; or, the first three-way is an ordinary three-way, and a pipe clamp is provided on the second pipeline.

Preferably, the other end of the third pipeline, one end of the fourth pipeline, one end of the fifth pipeline and one end of the seventh pipeline are respectively connected to the four interfaces of the four-way .

Wherein preferably, the second three-way and the third three-way are cock-type three-way for controlling flow; the four-way is a cock-type four-way for controlling flow; wherein, when the first three-way is In the case of a common tee, a pipe clamp is provided on the third pipeline.

Or, preferably, the second three-way and the third three-way are ordinary three-way, and the four-way is an ordinary four-way; in the third pipeline, the fourth pipeline, the The fifth pipeline, the sixth pipeline, the seventh pipeline, the eighth pipeline and the ninth pipeline are respectively provided with pipe clamps; and the fourth pipeline is close to the four-way A one-way valve is provided at the position for allowing the liquid to flow in one direction along the fourth pipeline to the fifth pipeline.

Preferably, the other end of the third pipeline, one end of the fourth pipeline and one end of the fifth pipeline are connected through a fourth tee; one end of the seventh pipeline is connected through the fifth The tee is connected to the middle of the fifth pipeline or the middle of the fourth pipeline.

Wherein preferably, the second three-way, the third three-way, the fourth three-way and the fifth three-way are plug-type three-way for controlling flow; wherein, when the first three-way When it is an ordinary tee, a pipe clamp is provided on the third pipeline.

Or, preferably, the second three-way, the third three-way, the fourth three-way and the fifth three-way are ordinary three-way; Pipe clamps are respectively arranged on the four pipelines, the fifth pipeline, the sixth pipeline, the seventh pipeline, the eighth pipeline and the ninth pipeline; and on the fourth pipeline A one-way valve is provided near the fourth three-way, for one-way flow of liquid along the fourth pipeline to the fifth pipeline.

Preferably, it also includes a perfusion device and a dialyzer, the arterial end of the perfusion device is connected to the end of the second pipeline away from the first tee, the venous end of the perfusion device is connected to the fourth The end of the pipeline away from the fifth pipeline is connected; the arterial end of the dialyzer is connected to the end of the fifth pipeline away from the fourth pipeline, and the venous end of the dialyzer is connected to the sixth pipeline. One end of the pipeline away from the third tee is connected.

Preferably, the other end of the tenth pipeline is connected to a waste liquid bag, or the other end of the tenth pipeline is connected to a waste liquid bag with a connecting pipeline through a two-way.

The closed artificial kidney connecting tube provided by the utility model can realize a separate preflush perfusator, a separate preflush dialyzer, a series preflush perfusator and a dialyzer, using Toggle between the functions of tandem therapy with a perfusate and a dialyzer, and dialysis with only a dialyzer. The closed artificial kidney connecting tube is set through the pipeline. On the one hand, the perfusion device and the dialyzer can be pre-flushed separately at first, avoiding that when the pre-flush perfusion device and the dialyzer are directly connected in series, the pre-flushing waste liquid of the perfusion device flows into the dialyzer. Causes the problem of polluting the dialyzer; on the other hand, by closing the clamps on different pipelines or adjusting multiple plug-type tees or crosses during dialysis, the two dialysis methods can be directly switched, avoiding the need to use existing tubes. When the two dialysis methods are switched, the perfusion device and its pipeline need to be removed, causing the pollution of the pipeline and sealing joints.

Description of drawings

Fig. 1 is the overall structural schematic view of the closed artificial kidney connecting tube provided by the first embodiment;

Fig. 2 is a schematic diagram of the overall structure of the closed artificial kidney connecting tube provided by the second embodiment.

detailed description

The technical content of the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

The first embodiment and the second embodiment provide two kinds of closed artificial kidney connecting tube structures, wherein, in the first embodiment shown in FIG. The interconnection of the four pipelines; and in the second embodiment shown in FIG. 2 , two tees are used between the perfusion device 11 and the dialyzer 12 to realize the interconnection of the four pipelines, which will be described in detail below.

first embodiment

As shown in Figure 1, the closed artificial kidney connecting tube includes a first pipeline 1, a second pipeline 2, a third pipeline 3, a fourth pipeline 4, a fifth pipeline 5, a sixth pipeline 6, a The seventh pipeline 7 , the eighth pipeline 8 , the ninth pipeline 9 and the tenth pipeline 10 .

Wherein, one end of the first pipeline 1, the second pipeline 2 and the third pipeline 3 are respectively connected with the three joints of the first three-way 13; the first three-way 13 can be a common three-way or a flow control cock type tee; when the first tee 13 is an ordinary tee, a pipe clamp is provided on the second pipeline 2.

The other end of the third pipeline 3, one end of the fourth pipeline 4, one end of the fifth pipeline 5 and one end of the seventh pipeline 7 are respectively connected to 4 interfaces of the four-way, and the four-way can be an ordinary four-way or Cock cross for flow control. When the four-way is an ordinary four-way, a one-way valve 20 can be set on the fourth pipeline 4 near the four-way, so that the liquid can flow in one direction along the fourth pipeline 4 to the fifth pipeline 5 , thereby preventing the blood from seeping back into the pipeline 4 when the dialyzer 12 is used for dialysis alone, and preventing the patient's blood from being wasted.

In this closed artificial kidney connecting tube, the other end of the seventh pipeline 7, one end of the eighth pipeline 8 and one end of the tenth pipeline 10 are respectively connected to the three joints of the second tee; the sixth pipeline One end of 6, the other end of the eighth pipeline 8 and one end of the ninth pipeline 9 are respectively connected to the three interfaces of the third tee.

The closed artificial kidney connecting tube also includes a perfusion device 11 and a dialyzer 12 . Wherein, the perfusion device 11, the dialyzer 12 and the above-mentioned pipelines are packaged and stored separately, and the above-mentioned pipelines need to be connected with the perfusion device 11 and the dialyzer 12 before clinical use. The specific connection method is as follows: the arterial end of the perfusion device 11 is connected with the end of the second pipeline 2 away from the first tee 13, and the venous end of the perfusion device 11 is connected with the end of the fourth pipeline 4 away from the four-way connection; The arterial end is connected to the end of the fifth pipeline 5 away from the cross, and the venous end of the dialyzer 12 is connected to the end of the sixth pipeline 6 away from the third three-way.

In the above-mentioned closed artificial kidney connecting tube, the four-way can use a cock-type four-way to control the flow rate, and can also use an ordinary four-way; the second three-way and the third three-way can use a cock-type three-way to control the flow rate, or Use a regular tee. When the second three-way and the third three-way are ordinary three-way, and the four-way is an ordinary four-way, in the third pipeline 3, the fourth pipeline 4, the fifth pipeline 5, the sixth pipeline 6, the seventh Pipe clamps 31 , 41 , 51 , 61 , 71 and 81 are respectively provided on the pipeline 7 and the eighth pipeline 8 . A pipe clip 91 may also be provided on the ninth pipeline 9 . By closing the tube clamps on different lines or turning the above-mentioned stopcock tees and crosses, it is possible to realize individual pre-flushing and serial pre-flushing of perfusion and dialyzer, combined treatment of perfusion and dialyzer, as well as using only dialyzer. Dialysis.

In this closed artificial kidney connecting tube, a waste liquid bag 14 is also arranged at the other end of the tenth pipeline 10, and the waste liquid bag 14 is directly connected with the tenth pipeline 10 or the other end of the tenth pipeline 10 passes through two Connect with the waste liquid bag 14 that has connecting pipeline. By controlling the tube clamps 81 and 91 , the preflush of the perfusion device 11 and the dialyzer 12 is discharged to the waste bag 14 , thereby preventing the preflush of the perfusion device 11 and the dialyzer 12 from polluting the venous tube.

In this closed artificial kidney connecting tube, the first pipeline 1, the second pipeline 2, the fourth pipeline 4, the fifth pipeline 5, the sixth pipeline 6, the ninth pipeline 9 and the tenth pipeline The open ends of the pipeline 10 are respectively provided with sealing joints, and are coupled with protective caps such as heparin caps to ensure a sterile environment inside the pipeline. After the medical personnel separate the protective cap from the pipeline before clinical use, they are connected with the perfusion device 11, the dialyzer 12, the waste liquid bag 14, and the veins and arteries of the human body.

Before dialysis, the perfusion device 11 and the dialyzer 12 need to be preflushed with physiological saline. When preflushing the perfusion device 11, first close the pipe clamp 31 of the third pipeline 3, the pipe clamp 51 of the fifth pipeline 5, and the pipe clamp 81 of the eighth pipeline 8, and close the pipe clamp of the fourth pipeline 4. 41 and the clamp 51 of the seventh pipeline 7 are opened, and the first three-way 13 cock is adjusted to the state where the first pipeline 1 and the second pipeline 2 are connected and the third pipeline 3 is disconnected, and then the physiological saline is injected The first pipeline 1 ; physiological saline enters the perfusion device 11 through the second pipeline 2 , then enters the seventh pipeline 7 through the fourth pipeline 4 , and finally enters the waste liquid bag 14 through the tenth pipeline 10 .

When preflushing the dialyzer 12, first close the pipe clamp 41 of the fourth pipeline 4, the pipe clamp 71 of the seventh pipeline 7 and the pipe clamp 91 on the ninth pipeline 9, and open the pipe clamp of the third pipeline 3 31. The pipe clamp 51 of the fifth pipeline 5, the pipe clamp 61 of the sixth pipeline 6 and the pipe clamp 81 of the eighth pipeline 8, and adjust the first three-way 13 cock to the first pipeline 1 and the third The pipeline 3 is connected and the second pipeline 2 is disconnected; physiological saline enters the dialyzer 12 through the first pipeline 1, the third pipeline 3 and the fifth pipeline 5, and then passes through the sixth pipeline 6 and the eighth pipeline The line 8 and the tenth line 10 enter the waste liquid bag 14 . After the preflushing process of the whole system is completed, the preflushing process is independent, and the perfusion device 11 and the dialyzer 12 do not interfere with each other. After the perfusion device 11 and the dialyzer 12 are pre-flushed separately, the waste liquid bag 14 can be disassembled from the tenth pipeline 10, so as to avoid the influence of the waste liquid bag 14 with a large mass on the convenience of subsequent operations.

After the perfusion device 11 and the dialyzer 12 are preflushed separately, the pipe clamp 31 of the third pipeline 3, the pipe clamp 71 of the seventh pipeline 7 and the pipe clamp 81 of the eighth pipeline 8 are closed, and the fourth pipeline is closed. 4, the pipe clamp 51 of the fifth pipeline 5, the pipe clamp 61 of the sixth pipeline 6 and the pipe clamp 91 on the ninth pipeline 9 are opened, and the first three-way 13 cock is adjusted to the first The pipeline 1 is in communication with the second pipeline 2 and the third pipeline 3 is disconnected to realize the preflushing of the ninth pipeline 9 .

After the perfusion device 11 and the dialyzer 12 are prefilled, when the dialyzer 12 and the perfusion device 11 are dialyzed in series, keep the open and closed state of each tube clamp in the pipeline, and at the same time, the ninth pipeline 9 is connected to the patient's venous blood line tube, the first The pipeline 1 is connected to the patient's arterial blood line, and the blood enters the first pipeline 1, the second pipeline 2, the perfusion device 11, the fourth pipeline 4, the fifth pipeline 5, the dialyzer 12 and the sixth pipeline through the arterial blood pipeline 6 and the ninth pipeline 9 enter the venous blood pipeline to complete the series dialysis.

The perfusion device 11 needs to be removed for about 2 hours of dialysis. When using the dialyzer 12 for dialysis alone, it is only necessary to close the pipe clamp 41 of the fourth pipeline 4, open the pipe clamp 31 of the third pipeline 3, and keep the other pipe clamps in place. The state of perfusion device 11 and dialyzer 12 combined treatment, then adjust the first three-way cock 13 to the state where the first pipeline 1 and the third pipeline 3 are connected and the second pipeline 2 is disconnected, and the blood passes through the first tube Line 1, third line 3, and fifth line 5 enter the dialyzer 12, and enter the venous blood line via the sixth line 6 and the ninth line 9. Simultaneously because one-way valve 20 only allows liquid to flow from perfusion device 11 to the direction of dialyzer 12, and prevents liquid from flowing from dialyzer 12 to the direction of perfusion device 11, thereby avoids when dialyzer 12 treatment is carried out alone, blood seeps back to the first Four pipelines 4 and the perfusion device 11, thereby avoiding the waste of blood of the patient.

During the above-mentioned preflushing and treatment process, the closed artificial kidney connection pipeline is in a closed environment. After completing the combined dialysis of the perfusion device and the dialyzer, it is only necessary to switch different switches and adjust the communication state of the cock tee, that is, The switching of different pipelines can be realized, and the cross-infection hazard caused by the open end exposed to the air caused by the removal of the pipeline during the dialysis process is avoided.

The process of preflushing and treating with the first three-way 13 of the cock type and a plurality of pipe clamps has been introduced above. When connecting to the cock type four-way, the setting of the tube clamp can be omitted, and it is only necessary to adjust the flow state of the above-mentioned pipeline to the corresponding flow state during the process of preflushing and treatment. Moreover, by setting the one-way valve 20 near the four-way position on the fourth pipeline 4, when the dialyzer 12 is used for dialysis treatment alone, it prevents blood from seeping back into the pipeline connected to the perfusion device 11, preventing blood waste .

second embodiment

The structure and operating principle of the closed artificial kidney connecting tube provided by the second embodiment are similar to those of the first embodiment, only the third pipeline 3, the fourth pipeline 4, the fifth pipeline 5 and the seventh pipeline 7 The connections between are different.

As shown in Figure 2, in this embodiment, the other end of the third pipeline 3, one end of the fourth pipeline 4 and one end of the fifth pipeline 5 are connected through the fourth tee 24; One end is connected to the middle part of the fifth pipeline 5 through the fifth tee 25 . Of course, it is also possible to connect one end of the seventh pipeline 7 to the middle of the fourth pipeline 4 through the fifth tee 25 .

Similarly, in the closed artificial kidney connecting tube, the fourth three-way 4 and the fifth three-way 5 can be ordinary three-way or cock-type three-way. When the fourth three-way 4 and the fifth three-way 5 are ordinary three-way, a one-way valve can be set near the fourth three-way 24 on the fourth pipeline 4, so that the liquid can flow along the fourth pipeline. 4 flows in one direction in the direction of the fifth pipeline 5, so as to prevent the blood from seeping back into the fourth pipeline 4 when the dialyzer 12 is used for dialysis alone, and prevent the patient's blood from being wasted.

The connection mode of other pipelines in the closed artificial kidney connecting tube is the same as that in the first embodiment, and will not be described in detail here.

The closed artificial kidney connecting tube also includes a perfusion device 11 and a dialyzer 12 . Wherein, the perfusion device 11, the dialyzer 12 and the above-mentioned pipelines are packaged and stored separately, and the above-mentioned pipelines need to be connected with the perfusion device 11 and the dialyzer 12 before clinical use. The specific connection method is as follows: the arterial end of the perfusion device 11 is connected to the end of the second pipeline 2 away from the first tee 21, and the venous end of the perfusion device 11 is connected to the end of the fourth pipeline 4 away from the fourth tee 24; The arterial end of the dialyzer 12 is connected to the end of the fifth pipeline 5 away from the fifth tee 25 , and the venous end of the dialyzer 12 is connected to the end of the sixth pipeline 6 away from the third tee 23 .

In the above-mentioned closed artificial kidney connecting tube, the second three-way 22, the third three-way 23, the fourth three-way 24 and the fifth three-way 25 can use the cock type three-way to control the flow rate, and can also use the common three-way. When the second three-way 22, the third three-way 23, the fourth three-way 24 and the fifth three-way 25 use ordinary three-way, in the third pipeline 3, the fourth pipeline 4, the fifth pipeline 5, the fifth pipeline The sixth pipeline 6 , the seventh pipeline 7 , the eighth pipeline 8 and the ninth pipeline 9 are respectively provided with pipe clips. By closing the clamps on different pipelines or adjusting the above-mentioned cock tee to different communication states, it is possible to realize separate preflushing and serial preflushing of the perfusion device and the dialyzer, combined treatment of the perfusion device and the dialyzer, and use only Dialyzer for dialysis.

In this closed artificial kidney connecting tube, the other end of the tenth pipeline 10 is also provided with a waste liquid bag 14, and the waste liquid bag 14 is directly connected with the tenth pipeline 10 or the other end of the tenth pipeline 10 passes through two Connect with the waste liquid bag 14 that has connecting pipeline.

In this closed artificial kidney connecting tube, the first pipeline 1, the second pipeline 2, the fourth pipeline 4, the fifth pipeline 5, the sixth pipeline 6, the ninth pipeline 9 and the tenth pipeline The open end of the pipeline 10 is provided with a sealed joint, and is coupled with a protective cap such as a heparin cap to ensure a sterile environment inside the pipeline. After the medical personnel separate the protective cap from the pipeline before clinical use, they are connected with the perfusion device 11, the dialyzer 12, the waste liquid bag 14, and the veins and arteries of the human body.

The second three-way 22, the third three-way 23, the fourth three-way 24 and the fifth three-way 25 used in this closed artificial kidney connecting pipe are all common three-way, and in the third pipeline 3, the fourth three-way When the tube clips are respectively installed on the pipeline 4, the fifth pipeline 5, the sixth pipeline 6, the seventh pipeline 7 and the eighth pipeline 8, the preflushing and treatment process are the same as those described in the first embodiment .

The second tee 22, the 3rd tee 23, the 4th tee 24 and the 5th tee 25 used by this closed artificial kidney connecting pipe are prewashing and treatment process when all are cock type tees below introduce.

Before dialysis, the perfusion device 11 and the dialyzer 12 need to be preflushed with physiological saline. When preflushing the perfusion device 11, first adjust the first three-way 21 cock to the state where the first pipeline 1 and the second pipeline 2 are connected and the third pipeline 3 is disconnected, and the fourth three-way 24 and the fifth three-way Through the cock of 25, adjust the fifth pipeline 5 between the fifth three-way 25 and the fourth three-way 24 to communicate with the fourth pipeline 4, and the third pipeline 3 is disconnected; the fourth three-way 24 and the fifth three-way The fifth pipeline 5 between the channels 25 is connected with the seventh pipeline 7, and the fifth pipeline 5 between the fifth three-way 25 and the dialyzer 12 is disconnected, and the second three-way 22 cock is adjusted To the state where the seventh pipeline 7 and the tenth pipeline 10 are connected and the eighth pipeline 8 is disconnected; then inject physiological saline into the first pipeline 1; The fourth pipeline 4 enters the seventh pipeline 7 , and finally enters the waste liquid bag 14 from the tenth pipeline 10 .

When preflushing the dialyzer 12, the first three-way 21 cock is adjusted to the state that the first pipeline 1 and the third pipeline 3 are connected and the second pipeline 2 is disconnected, and the fourth three-way 24 and the fifth three-way 25 are connected. The cock is adjusted so that the fifth pipeline 5 between the fourth three-way 24 and the fifth three-way 25 communicates with the third pipeline 3 and the fourth pipeline 4 is disconnected, and the connection between the fourth three-way 24 and the fifth three-way 25 Between the fifth pipeline 5 and the fifth three-way 25 and the fifth pipeline 5 between the dialyzer 12 and the state that the seventh pipeline 7 is disconnected, and the third three-way 23 and the second three-way 22 The cock is adjusted to the state where the sixth pipeline 6 is connected to the eighth pipeline 8 and the ninth pipeline 9 is disconnected; the eighth pipeline 8 is connected to the tenth pipeline 10 and the seventh pipeline 7 is disconnected; The first pipeline 1 , the third pipeline 3 and the fifth pipeline 5 enter the dialyzer 12 , and then enter the waste liquid bag 14 through the sixth pipeline 6 , the eighth pipeline 8 and the tenth pipeline 10 . After the preflushing process of the whole system is completed, the preflushing process is independent, and the perfusion device 11 and the dialyzer 12 do not interfere with each other.

After the perfusion device 11 and the dialyzer 12 are pre-flushed separately, adjust the cock of the first three-way 21 to the state where the first pipeline 1 and the second pipeline 2 are connected and the third pipeline 3 is disconnected, and the fourth three-way 24 and the fifth three-way 25 cock to the state where the fourth pipeline 4 and the fifth pipeline 5 are connected and the third pipeline 3 and the seventh pipeline 7 are disconnected, and the third three-way 23 cock is adjusted to the sixth The pipeline 6 is in communication with the ninth pipeline 9 and the eighth pipeline 8 is disconnected; thus, the preflushing of the ninth pipeline 9 is completed. Then keep the state of each tee unchanged, carry out serial dialysis with dialyzer 12 and perfusion device 11, connect the ninth pipeline 9 to the patient's venous blood line, and the first pipeline 1 to connect the patient's arterial blood line, and the blood enters through the arterial blood line The first pipeline 1, the second pipeline 2, the perfusion device 11, the fourth pipeline 4, the fifth pipeline 5, the dialyzer 12, the sixth pipeline 6 and the ninth pipeline 9 enter the venous blood pipeline to complete the series connection Dialysis.

The perfusion device 11 needs to be removed for about 2 hours of dialysis. When the dialyzer 12 is alone for dialysis, only the first three-way cock 21 needs to be adjusted to the state where the first pipeline 1 and the third pipeline 3 are connected and the second pipeline 2 is disconnected. , and the fourth three-way 24 is adjusted to the state where the third pipeline 3 and the fifth pipeline 5 are connected and the fourth pipeline 4 is disconnected, and the other three-way states remain unchanged; blood passes through the first pipeline 1, the second pipeline The third pipeline 3 and the fifth pipeline 5 enter the dialyzer 12 and enter the venous blood line via the sixth pipeline 6 and the ninth pipeline 9 .

The closed artificial kidney connecting pipelines are all in a closed environment. After completing the combined dialysis of the perfusion device and the dialyzer, it is only necessary to adjust the connection status of multiple cock-type tees to realize the switching of different pipelines, avoiding the Cross-infection hazards caused by open ends exposed to air due to removal of tubing during dialysis.

In summary, the closed artificial kidney connecting tube is set through the pipeline. On the one hand, by preflushing the cartridge and the dialyzer separately, it avoids the waste liquid of the cartridge preflushing when the cartridge and the dialyzer are directly connected in series. On the other hand, during dialysis, the two dialysis methods can be directly switched by closing different pipe clamps or adjusting the state of the three-way and four-way, avoiding the removal of the perfusion device and the Its pipeline causes the problem of pipeline and sealing joint exposure pollution.

The closed artificial kidney connecting tube provided by the present invention has been described in detail above. For those skilled in the art, any obvious changes made to the utility model without departing from the essential spirit of the utility model will fall within the scope of protection of the utility model patent right.

Claims (10)

1. a closed type artificial kidney connection tube, is characterized in that:

Comprise ten pipelines; Wherein, the first pipeline, the second pipeline are connected with three joints of the first threeway respectively with one end of the 3rd pipeline;

The other end of described 3rd pipeline, one end of the 4th pipeline, one end of the 5th pipeline and one end of the 7th pipeline form the structure be interconnected;

The other end of described 7th pipeline, one end of the 8th pipeline are connected with three joints of the second threeway respectively with one end of the tenth pipeline;

One end of 6th pipeline, the other end of described 8th pipeline are connected with three interfaces of the 3rd threeway respectively with one end of the 9th pipeline.

2. closed type artificial kidney connection tube as claimed in claim 1, is characterized in that:

Described first threeway is the cock-type threeway of controllable flow rate;

Or described first threeway is common threeway, and be provided with pipe clamp on described second pipeline.

3. closed type artificial kidney connection tube as claimed in claim 2, is characterized in that:

The other end of described 3rd pipeline, one end of described 4th pipeline, one end of described 5th pipeline are connected with four interfaces of four-way respectively with one end of described 7th pipeline.

4. closed type artificial kidney connection tube as claimed in claim 3, is characterized in that:

Described second threeway and described 3rd threeway are the cock-type threeway controlling flow; Described four-way is the cock-type four-way controlling flow;

Wherein, when described first threeway is common threeway, described 3rd pipeline is provided with pipe clamp.

5. closed type artificial kidney connection tube as claimed in claim 3, is characterized in that:

Described second threeway and described 3rd threeway are common threeway, and described four-way is common four-way;

Described 3rd pipeline, described 4th pipeline, described 5th pipeline, described 6th pipeline, described 7th pipeline, described 8th pipeline and the 9th pipeline are respectively arranged with pipe clamp;

And on described 4th pipeline, the position of described four-way is provided with check valve, for making liquid can along described 4th pipeline to described 5th pipeline direction one-way flow.

6. closed type artificial kidney connection tube as claimed in claim 2, is characterized in that:

The other end of described 3rd pipeline, one end of described 4th pipeline are connected by the 4th threeway with one end of described 5th pipeline; One end of described 7th pipeline is connected to the middle part of described 5th pipeline or the middle part of described 4th pipeline by the 5th threeway.

7. closed type artificial kidney connection tube as claimed in claim 6, is characterized in that:

Described second threeway, described 3rd threeway, described 4th threeway and described 5th threeway are the cock-type threeway controlling flow;

Wherein, when described first threeway is common threeway, described 3rd pipeline is provided with pipe clamp.

8. closed type artificial kidney connection tube as claimed in claim 6, is characterized in that:

Described second threeway, described 3rd threeway, described 4th threeway and described 5th threeway are common threeway;

Described 3rd pipeline, described 4th pipeline, described 5th pipeline, described 6th pipeline, described 7th pipeline, described 8th pipeline and the 9th pipeline are respectively arranged with pipe clamp;

And on described 4th pipeline, the position of described 4th threeway is provided with check valve, for making liquid can along described 4th pipeline to described 5th pipeline direction one-way flow.

9. closed type artificial kidney connection tube as claimed in claim 2, is characterized in that:

Also comprise perfusion device and dialyser, the arterial end of described perfusion device is connected with described second pipeline one end away from described first threeway, and the vein end of described perfusion device is connected with described 4th pipeline one end away from described 5th pipeline; The arterial end of described dialyser is connected with described 5th pipeline one end away from described 4th pipeline, and the vein end of described dialyser is connected with described 6th pipeline one end away from described 3rd threeway.

10. closed type artificial kidney connection tube as claimed in claim 2, is characterized in that:

The other end of described tenth pipeline is connected with waste fluid bag, or the other end of described tenth pipeline is connected with the waste fluid bag with connecting line by two-way.