CN211383037U

CN211383037U - Blood purification device

Info

Publication number: CN211383037U
Application number: CN201921244369.1U
Authority: CN
Inventors: 周长铭; 刘宇飞; 张翠英
Original assignee: Second Hospital of Dalian Medical University
Current assignee: Second Hospital of Dalian Medical University
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2020-09-01
Anticipated expiration: 2029-08-02

Abstract

The utility model discloses a blood purification device, including blood pump, first arteria kettle, first filter, the first vein kettle that connects gradually, the both ends of arteria kettle are provided with three-way valve I and three-way valve II respectively, the both ends of filter are provided with three-way valve III, three-way valve IV, three-way valve V, three-way valve VI respectively, the both ends of vein kettle are provided with three-way valve VII, three-way valve VIII respectively, the feed liquor end and the arterial end of blood pump are connected, the mouth I of three-way valve I is connected to the play liquid end of blood pump, vein end is connected to mouth II of three-way valve VIII. The utility model can flexibly change the blood coagulation part according to the actual situation, and the operation is simple and convenient; the condition that the whole set of pipeline needs to be replaced when blood coagulation occurs is avoided, the economic pressure of a patient is reduced, and the workload of medical staff is reduced; the time required by the replacement process is short, the continuity of treatment is ensured, and a better treatment effect is achieved; the satisfaction of the patient is improved, and the harmonious medical care relation is established.

Description

Blood purification device

Technical Field

The utility model relates to a blood purification technology field, concretely relates to blood purification device.

Background

Continuous Blood Purification (CBP) has become one of the important means for intensive care unit rescue and treatment. Because of its wide adaptation and good therapeutic effect, its application range in clinic is increasingly expanded. The single treatment time is from several hours to dozens of hours according to different illness states, the existing blood purification device has more factors influencing the coagulation of the pipeline, and the condition that the patient is forced to be out of the machine due to various conditions is caused in the treatment process, so that the whole set of pipeline is frequently replaced, the economic burden of the patient is increased, the workload of medical care personnel is increased, the blood loss of the patient is caused, the treatment time is delayed, and the treatment effect is influenced. In the blood purification process, the most frequent sites of coagulation are the filters, venous vessels, arterial vessels. If the blocked part can be replaced before the pipeline is completely blocked, the original treatment pipeline can be reserved, and the treatment can be quickly recovered. When the filter is replaced, direct separation and installation of the filter are not recommended, and blood extravasation and secondary pollution are easy to occur.

SUMMERY OF THE UTILITY MODEL

For solving the problem of the prior art, the utility model provides a blood purification device improves current ordinary blood purification pipeline.

The purpose of the utility model is realized through the following technical scheme: a blood purification device comprises a blood pump, a first arterial pot, a first filter and a first venous pot which are sequentially connected, wherein two ends of the first arterial pot are respectively provided with a three-way valve I and a three-way valve II, two ends of the first filter are respectively provided with a three-way valve III, a three-way valve IV, a three-way valve V and a three-way valve VI, and two ends of the first venous pot are respectively provided with a three-way valve VII and a three-way valve VIII;

the liquid inlet end and the artery end of blood pump are connected, the play liquid end of blood pump connects mouth I of three-way valve I, the liquid inlet end of first artery kettle is connected to mouth II of three-way valve I, mouth I of three-way valve III is connected to mouth II of three-way valve II, mouth I of three-way valve IV is connected to mouth II of three-way valve III, the liquid inlet end of first filter is connected to mouth II of three-way valve IV, mouth I of three-way valve V is connected to the play liquid end of first filter, mouth I of three-way valve VI is connected to mouth II of three-way valve V, mouth I of three-way valve VII is connected to mouth II of three-way valve VI, the liquid inlet end of first vein kettle is connected to mouth II of three-way valve VI, mouth I of three-way valve VIII is connected to the play liquid end of first vein kettle, vein kettle II of three-way valve VIII connects the vein end.

Furthermore, the upper end of the side wall of the first filter is connected with the liquid inlet end of the waste liquid pump.

Furthermore, a pipeline between the three-way valve VI and the three-way valve VIII is connected with a liquid inlet end of the displacement pump/dialysis pump.

Furthermore, a port III of the three-way valve I is connected with a liquid inlet end of a second arterial pot, and a liquid outlet end of the second arterial pot is connected with a port III of the three-way valve II.

Furthermore, the upper end of the side wall of the second filter is connected with the liquid inlet end of the waste liquid pump.

Furthermore, a port III of the three-way valve IV is connected with a liquid inlet end of a second filter, and a liquid outlet end of the second filter is connected with a port III of the three-way valve V.

Furthermore, a port III of the three-way valve II is connected with a liquid inlet end of a third filter, and a liquid outlet end of the third filter is connected with a port III of the three-way valve IV.

Furthermore, a port III of the three-way valve V is connected with a liquid inlet end of a fourth filter, and a liquid outlet end of the fourth filter is connected with a port III of the three-way valve VI.

Further, the liquid outlet end of the waste liquid pump is connected with a waste liquid bag.

Further, the liquid outlet end of the replacement pump/dialysis pump is connected with a replacement liquid bag/dialysis liquid bag.

The utility model has the advantages that:

(1) the blood coagulation part can be flexibly replaced according to the actual condition, and the operation is simple and convenient.

(2) The condition that the whole set of pipeline needs to be replaced when blood coagulation occurs is avoided, the economic pressure of a patient is reduced, and the workload of medical staff is reduced.

(3) The time required by the replacement process is short, the continuity of treatment is ensured, and a better treatment effect is achieved.

(4) The filter is a closed pre-flushing filter, so that blood extravasation and secondary infection are avoided.

(5) The satisfaction of the patient is improved, and the harmonious medical care relation is established.

(6) The operation is more flexible when a plurality of filters are used for combined treatment, the filters can be flexibly increased and decreased according to the disease condition, and meanwhile, the open filter replacement is avoided.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of a second parallel arterial pot of the present invention.

Fig. 3 is a schematic structural diagram of the parallel second filter of the present invention.

Fig. 4 is a schematic structural view of the parallel second venous kettle of the present invention.

Fig. 5 is a schematic structural diagram of the combination therapy of two filters according to the present invention.

Fig. 6 is a schematic structural diagram of the combination therapy with three filters according to the present invention.

In the figure: 1. three-way valves I, 2, three-way valves II, 3, three-way valves III, 4, three-way valves IV, 5, three-way valves V, 6, three-way valves VI, 7, three-way valves VII, 8, three-way valves VIII, 9, a blood pump, 10, a first arterial pot, 11, a first filter, 12, a first venous pot, 13, a substitution pump/dialysis pump, 14, a waste liquid pump, 15, a second arterial pot, 16, a second filter, 17, a second venous pot, 18, a third filter, 19, a fourth filter, 20, a substitution fluid bag/dialysis fluid bag, 21, a waste fluid bag, 22, an arterial end, 23, a venous end, 101, a port I, 102 of the three-way valve I, a port II, 103 of the three-way valve I, a port III, 201 of the three-way valve I, 202, a port II, 203 of the three-way valve II, a port III, 301, a port I, 302 of the three-way valve II, a port III, 303, a port III of the three-way valve III, 401. the three-way valve comprises ports I and 402 of a three-way valve IV, ports II and 403 of the three-way valve IV, ports III and 501 of the three-way valve IV, ports I and 502 of a three-way valve V, ports II and 503 of the three-way valve V, ports III and 601 of the three-way valve V, ports I and 602 of the three-way valve VI, ports II and 603 of the three-way valve VI, ports III and 701 of the three-way valve VI, ports I and 702 of the three-way valve VII, ports II and 703 of the three-way valve VII, ports III and 801 of the three-way valve VII, ports I and 802 of the three-way valve VIII, ports II and 803 of the three-way valve VIII and port III of the.

Detailed Description

The following non-limiting examples will allow one of ordinary skill in the art to more fully understand the present invention, but are not intended to limit the invention in any way.

Example 1

As shown in fig. 1, a blood purification device comprises a blood pump 9, a first arterial pot 10, a first filter 11 and a first venous pot 12 which are connected in sequence through pipelines, wherein two ends of the first arterial pot 10 are respectively provided with a three-way valve i 1 and a three-way valve ii 2, two ends of the first filter 11 are respectively provided with a three-way valve iii 3, a three-way valve iv 4, a three-way valve v 5 and a three-way valve vi 6, and two ends of the venous pot are respectively provided with a three-way valve vii 7 and a three-way valve viii 8; the liquid inlet end of the blood pump 9 is connected with the artery end 22, the liquid outlet end of the blood pump 9 is connected with the port I101 of the three-way valve I through a pipeline, the port II 102 of the three-way valve I is connected with the liquid inlet end of the first arterial pot 10 through a pipeline, the liquid outlet end of the first arterial pot 10 is connected with the port I201 of the three-way valve II through a pipeline, the port II 202 of the three-way valve II is connected with the port I301 of the three-way valve III through a pipeline, the port II 302 of the three-way valve III is connected with the port I401 of the three-way valve IV through a pipeline, the port III 402 of the three-way valve IV is connected with the liquid inlet end of the first filter 11 through a pipeline, the liquid outlet end of the first filter 11 is connected with the port I501 of the three-way valve V through a pipeline, the port II 502 of the three-way valve V is connected with the port I601 of the three-way valve VI through a pipeline, the port II, the liquid outlet end of the first venous pot 12 is connected with a port I801 of a three-way valve VIII through a pipeline, and a port II 802 of the three-way valve VIII is connected with a venous end 23 through a pipeline. The upper end of the side wall of the first filter 11 is connected with the liquid inlet end of the waste liquid pump 14 through a pipeline, and the liquid outlet end of the waste liquid pump 14 is connected with the waste liquid bag 21 through a pipeline. And a pipeline between the port II 602 of the three-way valve VI and the port I801 of the three-way valve VIII is connected with the liquid inlet end of the displacement pump/dialysis pump 13, and the liquid outlet end of the displacement pump/dialysis pump 13 is connected with the displacement liquid bag/dialysis liquid bag 20 through a pipeline.

The blood from the artery end 22 passes through the blood pump 9 in proper order, three-way valve I1, first arteria pot 10, three-way valve II 2, three-way valve III 3, three-way valve IV 4 reaches the inlet end of first filter 11, filter through first filter 11, the play liquid end that the blood that permeates through first filter 11 passes through three-way valve V5 in proper order, three-way valve VI 6, the replacement fluid/the dislysate in the replacement fluid bag/dislysate bag 20 flows out through replacement pump/dialysis pump 13, the blood that permeates assembles at the mouth I701 of three-way valve VII with replacement fluid/dislysate, pass through three-way valve VII 7 in proper order, first vein kettle 12, three-way valve VIII 8 flows out through vein end 23. The waste liquid separated by the first filter 11 flows into the waste liquid bag 21 via the waste liquid pump 14.

Example 2

As shown in fig. 2, a blood purification device comprises a blood pump 9, a first arterial pot 10, a first filter 11 and a first venous pot 12 which are connected in sequence through pipelines, wherein two ends of the first arterial pot 10 are respectively provided with a three-way valve i 1 and a three-way valve ii 2, two ends of the first filter 11 are respectively provided with a three-way valve iii 3, a three-way valve iv 4, a three-way valve v 5 and a three-way valve vi 6, and two ends of the venous pot are respectively provided with a three-way valve vii 7 and a three-way valve viii 8; the liquid inlet end of the blood pump 9 is connected with the artery end 22, the liquid outlet end of the blood pump 9 is connected with a port I101 of a three-way valve I through a pipeline, a port II 102 of the three-way valve I is connected with the liquid inlet end of a first arterial pot 10 through a pipeline, the liquid outlet end of the first arterial pot 10 is connected with a port I201 of the three-way valve II through a pipeline, an outlet II 103 of the three-way valve I is connected with the liquid inlet end of a second arterial pot 15 through a pipeline, the liquid outlet end of the second arterial pot 15 is connected with a port III 203 of the three-way valve II through a pipeline, a port II 202 of the three-way valve II is connected with a port I301 of the three-way valve III through a pipeline, a port II 302 of the three-way valve III is connected with a port I401 of a three-way valve IV through a pipeline, a port III 402 of the three-way valve IV is connected with the liquid inlet end of a first filter 11 through a pipeline, the liquid, the port II 602 of the three-way valve VI is connected with the port I701 of the three-way valve VII through a pipeline, the port II 702 of the three-way valve VI is connected with the liquid inlet end of the first vein pot 12 through a pipeline, the liquid outlet end of the first vein pot 12 is connected with the port I801 of the three-way valve VIII through a pipeline, and the port II 802 of the three-way valve VIII is connected with the vein end 23 through a pipeline. The upper end of the side wall of the first filter 11 is connected with the liquid inlet end of the waste liquid pump 14 through a pipeline, and the liquid outlet end of the waste liquid pump 14 is connected with the waste liquid bag 21 through a pipeline. And a pipeline between the port II 602 of the three-way valve VI and the port I801 of the three-way valve VIII is connected with the liquid inlet end of the displacement pump/dialysis pump 13, and the liquid outlet end of the displacement pump/dialysis pump 13 is connected with the displacement liquid bag/dialysis liquid bag 20 through a pipeline.

When first arteria kettle 10 takes place the blood coagulation, through rotatory three-way valve I1, close mouth II 102 of three-way valve I above first arteria kettle 10, open mouth III 103 of three-way valve I, through rotatory three-way valve II 2, close mouth I201 of three-way valve II below first arteria kettle 10, open mouth III 203 of three-way valve II, first arteria kettle 11 is closed this moment, and second arteria kettle 15 is unobstructed, makes blood flow through from second arteria kettle 15.

The blood from the artery end 22 passes through the blood pump 9 in proper order, three-way valve I1, second artery kettle 15, three-way valve II 2, three-way valve III 3, three-way valve IV 4 reaches the inlet end of first filter 11, filter through first filter 11, the blood that permeates is through the play liquid end of first filter 11 passes through three-way valve V5, three-way valve VI 6 in proper order, the replacement fluid/the dislysate in the replacement fluid bag/dislysate bag 20 flows out through replacement pump/dislysate pump 13, the blood that permeates assembles at the mouth I701 of three-way valve VII with replacement fluid/dislysate, pass through three-way valve VII 7 in proper order, first vein kettle 12, three-way valve VIII 8 flows out through vein end 23. The waste liquid separated by the first filter 11 flows into the waste liquid bag 21 via the waste liquid pump 14.

Example 3

As shown in fig. 3, a blood purification device comprises a blood pump 9, a first arterial pot 10, a first filter 11 and a first venous pot 12 which are connected in sequence through pipelines, wherein two ends of the first arterial pot 10 are respectively provided with a three-way valve i 1 and a three-way valve ii 2, two ends of the first filter 11 are respectively provided with a three-way valve iii 3, a three-way valve iv 4, a three-way valve v 5 and a three-way valve vi 6, and two ends of the venous pot are respectively provided with a three-way valve vii 7 and a three-way valve viii 8; the liquid inlet end of the blood pump 9 is connected with the artery end 22, the liquid outlet end of the blood pump 9 is connected with a port I101 of a three-way valve I through a pipeline, a port II 102 of the three-way valve I is connected with the liquid inlet end of a first arterial pot 10 through a pipeline, the liquid outlet end of the first arterial pot 10 is connected with a port I201 of the three-way valve II through a pipeline, a port II 202 of the three-way valve II is connected with a port I301 of the three-way valve III through a pipeline, a port II 302 of the three-way valve III is connected with a port I401 of a three-way valve IV through a pipeline, a port III 402 of the three-way valve IV is connected with the liquid inlet end of a first filter 11 through a pipeline, the liquid outlet end of the first filter 11 is connected with a port I501 of a three-way valve V through a pipeline, a port III of the three-way valve IV is connected with the liquid inlet end of a second filter 16 through a pipeline, the liquid outlet, the port II 602 of the three-way valve VI is connected with the port I701 of the three-way valve VII through a pipeline, the port II 702 of the three-way valve VI is connected with the liquid inlet end of the first vein pot 12 through a pipeline, the liquid outlet end of the first vein pot 12 is connected with the port I801 of the three-way valve VIII through a pipeline, and the port II 802 of the three-way valve VIII is connected with the vein end 23 through a pipeline. The upper end of the side wall of the second filter 16 is connected with the liquid inlet end of the waste liquid pump 14 through a pipeline, and the liquid outlet end of the waste liquid pump 14 is connected with a waste liquid bag 21 through a pipeline. And a pipeline between the port II 602 of the three-way valve VI and the port I801 of the three-way valve VIII is connected with the liquid inlet end of the displacement pump/dialysis pump 13, and the liquid outlet end of the displacement pump/dialysis pump 13 is connected with the displacement liquid bag/dialysis liquid bag 20 through a pipeline.

When the first filter 11 is coagulated, the port II 402 of the three-way valve IV below the first filter 11 is closed by rotating the three-way valve IV 4, the port III 403 of the three-way valve IV is opened, the port I501 of the three-way valve V above the first filter 11 is closed by rotating the three-way valve V, and the port III 503 of the three-way valve V is opened, at this moment, the first filter 11 is closed, the second filter 16 is unobstructed, and blood flows through the second filter 16.

The blood from the artery end 22 passes through the blood pump 9 in proper order, three-way valve I1, first arteria pot 10, three-way valve II 2, three-way valve III 3, three-way valve IV 4 reaches the inlet end of first filter 11, filter through first filter 11, the blood that permeates is through the play liquid end of first filter 11 passes through three-way valve V5, three-way valve VI 6 in proper order, the replacement fluid/the dislysate in the replacement fluid bag/dislysate bag 20 flows out through replacement pump/dialysis pump 13, the blood that permeates assembles at the mouth I701 of three-way valve VII with replacement fluid/dislysate, pass through three-way valve VII 7 in proper order, second vein pot 17, three-way valve VIII 8 flows out through vein end 23. The waste liquid separated by the first filter 11 flows into the waste liquid bag 21 via the waste liquid pump 14.

Example 4

As shown in fig. 4, a blood purification device comprises a blood pump 9, a first arterial pot 10, a first filter 11 and a first venous pot 12 which are connected in sequence through pipelines, wherein two ends of the first arterial pot 10 are respectively provided with a three-way valve i 1 and a three-way valve ii 2, two ends of the first filter 11 are respectively provided with a three-way valve iii 3, a three-way valve iv 4, a three-way valve v 5 and a three-way valve vi 6, and two ends of the venous pot are respectively provided with a three-way valve vii 7 and a three-way valve viii 8; the liquid inlet end of the blood pump 9 is connected with the artery end 22, the liquid outlet end of the blood pump 9 is connected with the port I101 of the three-way valve I through a pipeline, the port II 102 of the three-way valve I is connected with the liquid inlet end of the first arterial pot 10 through a pipeline, the liquid outlet end of the first arterial pot 10 is connected with the port I201 of the three-way valve II through a pipeline, the port II 202 of the three-way valve II is connected with the port I301 of the three-way valve III through a pipeline, the port II 302 of the three-way valve III is connected with the port I401 of the three-way valve IV through a pipeline, the port III 402 of the three-way valve IV is connected with the liquid inlet end of the first filter 11 through a pipeline, the liquid outlet end of the first filter 11 is connected with the port I501 of the three-way valve V through a pipeline, the port II 502 of the three-way valve V is connected with the port I601 of the three-way valve VI through a pipeline, the port II, the liquid outlet end of the first venous kettle 12 is connected with a port I801 of a three-way valve VIII through a pipeline, a port III 703 of the three-way valve VII is connected with a liquid inlet end of a second venous kettle 17, a liquid outlet end of the second venous kettle 17 is connected with a port III 803 of the three-way valve VIII, and a port II 802 of the three-way valve VIII is connected with a venous end 23 through a pipeline. The upper end of the side wall of the first filter 11 is connected with the liquid inlet end of the waste liquid pump 14 through a pipeline, and the liquid outlet end of the waste liquid pump 14 is connected with the waste liquid bag 21 through a pipeline. And a pipeline between the port II 602 of the three-way valve VI and the port I801 of the three-way valve VIII is connected with the liquid inlet end of the displacement pump/dialysis pump 13, and the liquid outlet end of the displacement pump/dialysis pump 13 is connected with the displacement liquid bag/dialysis liquid bag 20 through a pipeline.

When the first venous pot 12 is coagulated blood, the opening II 702 of the three-way valve VII above the first venous pot 12 is closed by rotating the three-way valve VII 7, the opening III 703 of the three-way valve I is opened, the opening I801 of the three-way valve VII below the first venous pot 12 is closed by rotating the three-way valve VIII 8, the opening III 803 of the three-way valve II is opened, the first venous pot 12 is closed at the moment, the second venous pot 17 is unobstructed, and blood flows through the second venous pot 17.

The blood from the artery end 22 passes through the blood pump 9 in proper order, three-way valve I1, the third artery 15, three-way valve II 2, three-way valve III 3, three-way valve IV 4 reaches the inlet end of first filter 11, filter through first filter 11, the blood that permeates is through the play liquid end of first filter 11 passes through three-way valve V5 in proper order, three-way valve VI 6, the replacement fluid/the dislysate in the replacement fluid bag/dislysate bag 20 flows out through replacement pump/dialysis pump 13, the blood that permeates is assembled with replacement fluid/dislysate in the mouth I701 of three-way valve VII, pass through three-way valve VII 7 in proper order, first vein kettle 12, three-way valve VIII 8 flows out through vein end 23. The waste liquid separated by the first filter 11 flows into the waste liquid bag 21 via the waste liquid pump 14.

Example 5

As shown in fig. 5, a blood purification device comprises a blood pump 9, a first arterial pot 10, a first filter 11 and a first venous pot 12 which are connected in sequence through pipelines, wherein two ends of the first arterial pot 10 are respectively provided with a three-way valve i 1 and a three-way valve ii 2, two ends of the first filter 11 are respectively provided with a three-way valve iii 3, a three-way valve iv 4, a three-way valve v 5 and a three-way valve vi 6, and two ends of the venous pot are respectively provided with a three-way valve vii 7 and a three-way valve viii 8; the liquid inlet end of the blood pump 9 is connected with the artery end 22, the liquid outlet end of the blood pump 9 is connected with a port I101 of a three-way valve I through a pipeline, a port II 102 of the three-way valve I is connected with the liquid inlet end of a first arterial pot 10 through a pipeline, the liquid outlet end of the first arterial pot 10 is connected with a port I201 of the three-way valve II through a pipeline, a port II 202 of the three-way valve II is connected with a port I301 of the three-way valve III through a pipeline, a port II 302 of the three-way valve III is connected with a port I401 of a three-way valve IV through a pipeline, a port III 203 of the three-way valve II is connected with the liquid inlet end of a third filter 18 through a pipeline, the liquid outlet end of the third filter 18 is connected with a port III of the three-way valve IV through a pipeline, a port III 402 of the three-way valve IV is connected with the liquid inlet end of a first filter 11 through a pipeline, the liquid outlet, the port II 602 of the three-way valve VI is connected with the port I701 of the three-way valve VII through a pipeline, the port II 702 of the three-way valve VI is connected with the liquid inlet end of the first vein pot 12 through a pipeline, the liquid outlet end of the first vein pot 12 is connected with the port I801 of the three-way valve VIII through a pipeline, and the port II 802 of the three-way valve VIII is connected with the vein end 23 through a pipeline. The upper end of the side wall of the first filter 11 is connected with the liquid inlet end of the waste liquid pump 14 through a pipeline, and the liquid outlet end of the waste liquid pump 14 is connected with the waste liquid bag 21 through a pipeline. And a pipeline between the port II 602 of the three-way valve VI and the port I801 of the three-way valve VIII is connected with the liquid inlet end of the displacement pump/dialysis pump 13, and the liquid outlet end of the displacement pump/dialysis pump 13 is connected with the displacement liquid bag/dialysis liquid bag 20 through a pipeline.

In the embodiment, the blood purification device is used for the combined treatment of two filters, the port II 302 of the three-way valve III is closed by rotating the three-way valve III 3, the port III 303 of the three-way valve III is opened, the port I401 of the three-way valve IV is closed by rotating the three-way valve IV 4, the port III 403 of the three-way valve IV is opened, and the third filter 18 is unblocked at the moment; the third filter 18 and the first filter 11 are connected in series for treatment.

The blood driven vein end 22 sequentially passes through a blood pump 9, a three-way valve I1, a first arterial pot 10, a three-way valve II 2, a three-way valve III 3, a third filter 18 and a three-way valve IV 4 to the liquid inlet end of the first filter 11, the blood is filtered by the first filter 11, the permeated blood sequentially passes through a three-way valve V5 and a three-way valve VI 6 through the liquid outlet end of the first filter 11, replacement liquid/dialysate in a replacement liquid bag/dialysate bag 20 flows out through a replacement pump/dialysate pump 13, the permeated blood and the replacement liquid/dialysate are gathered at an opening I701 of the three-way valve VII, and the permeated blood sequentially passes through a three-way valve VII 7, a first venous pot 12 and a three-way valve VIII 8 and flows out through a vein. The waste liquid separated by the first filter 11 flows into the waste liquid bag 21 via the waste liquid pump 14.

Example 6

As shown in fig. 6, a blood purification device comprises a blood pump 9, a first arterial pot 10, a first filter 11 and a first venous pot 12 which are connected in sequence through pipelines, wherein two ends of the first arterial pot 10 are respectively provided with a three-way valve i 1 and a three-way valve ii 2, two ends of the first filter 11 are respectively provided with a three-way valve iii 3, a three-way valve iv 4, a three-way valve v 5 and a three-way valve vi 6, and two ends of the venous pot are respectively provided with a three-way valve vii 7 and a three-way valve viii 8; the liquid inlet end of the blood pump 9 is connected with the artery end 22, the liquid outlet end of the blood pump 9 is connected with a port I101 of a three-way valve I through a pipeline, a port II 102 of the three-way valve I is connected with the liquid inlet end of a first arterial pot 10 through a pipeline, the liquid outlet end of the first arterial pot 10 is connected with a port I201 of the three-way valve II through a pipeline, a port II 202 of the three-way valve II is connected with a port I301 of the three-way valve III through a pipeline, a port II 302 of the three-way valve III is connected with a port I401 of a three-way valve IV through a pipeline, a port III 203 of the three-way valve II is connected with the liquid inlet end of a third filter 18 through a pipeline, the liquid outlet end of the third filter 18 is connected with a port III of the three-way valve IV through a pipeline, a port III 402 of the three-way valve IV is connected with the liquid inlet end of a first filter 11 through a pipeline, the liquid outlet, the liquid inlet end of a port III 503 of the three-way valve V is connected with a liquid inlet end of a fourth filter 19 through a pipeline, the liquid outlet end of the fourth filter 19 is connected with a port III 603 of a three-way valve VI through a pipeline, a port II 602 of the three-way valve VI is connected with a port I701 of the three-way valve VII through a pipeline, a port II 702 of the three-way valve VI is connected with a liquid inlet end of a first vein pot 12 through a pipeline, the liquid outlet end of the first vein pot 12 is connected with a port I801 of the three-way valve VIII through a pipeline, and a port II 802 of the three-way valve VIII is connected with a vein end. The upper end of the side wall of the first filter 11 is connected with the liquid inlet end of the waste liquid pump 14 through a pipeline, and the liquid outlet end of the waste liquid pump 14 is connected with the waste liquid bag 21 through a pipeline. And a pipeline between the port II 602 of the three-way valve VI and the port I801 of the three-way valve VIII is connected with the liquid inlet end of the displacement pump/dialysis pump 13, and the liquid outlet end of the displacement pump/dialysis pump 13 is connected with the displacement liquid bag/dialysis liquid bag 20 through a pipeline.

In the embodiment, the blood purification device is used for the combined treatment of three filters, the port II 302 of the three-way valve III is closed by rotating the three-way valve III 3, the port III 303 of the three-way valve III is opened, the port I401 of the three-way valve IV is closed by rotating the three-way valve IV 4, the port III 403 of the three-way valve IV is opened, and the third filter 18 is unblocked at the moment; the port II 502 of the three-way valve V is closed, the port III 503 of the three-way valve V is opened by rotating the three-way valve V5, the port I601 of the three-way valve VI is closed and the port III 603 of the three-way valve VI is opened by rotating the three-way valve VI 6, and at the moment, the fourth filter 19 is unobstructed; the third filter 18, the first filter 11 and the fourth filter 19 are connected in series for treatment.

The blood driven vein end 22 sequentially passes through the blood pump 9, the three-way valve I1, the first arterial pot 10, the three-way valve II 2, the three-way valve III 3, the third filter 18 and the three-way valve IV 4 to the liquid inlet end of the first filter 11, the blood is filtered by the first filter 11, the permeated blood sequentially passes through the three-way valve V5, the fourth filter 19 and the three-way valve VI 6 from the liquid outlet end of the first filter 11, the replacement fluid/dialysate in the replacement fluid bag/dialysate bag 20 flows out through the replacement pump/dialysate pump 13, the permeated blood and the replacement fluid/dialysate are converged at an opening I701 of the three-way valve VII, and sequentially pass through the three-way valve VII 7, the first venous pot 12 and the three-way valve VIII 8 and flow out through the vein end 23. The waste liquid separated by the first filter 11 flows into the waste liquid bag 21 via the waste liquid pump 14.

Claims

1. A blood purification device comprises a blood pump, a first arterial pot, a first filter and a first venous pot which are sequentially connected, and is characterized in that two ends of the first arterial pot are respectively provided with a three-way valve I and a three-way valve II, two ends of the first filter are respectively provided with a three-way valve III, a three-way valve IV, a three-way valve V and a three-way valve VI, and two ends of the first venous pot are respectively provided with a three-way valve VII and a three-way valve VIII;

2. A blood purification apparatus according to claim 1, wherein the upper end of the side wall of the first filter is connected to the inlet side of the waste liquid pump.

3. The blood purification device according to claim 1, wherein a pipeline between the three-way valve VI and the three-way valve VIII is connected with the liquid inlet end of the displacement pump/dialysis pump.

4. The blood purification device of claim 1, wherein the port III of the three-way valve I is connected with the inlet end of a second arterial pot, and the outlet end of the second arterial pot is connected with the port III of the three-way valve II.

5. A blood purification apparatus according to claim 1, wherein the port iii of the three-way valve iv is connected to the inlet port of the second filter, and the outlet port of the second filter is connected to the port iii of the three-way valve v.

6. A blood purification apparatus according to claim 5, wherein the upper end of the side wall of the second filter is connected to the inlet side of the waste liquid pump.

7. The blood purification device according to claim 1, wherein a port III of the three-way valve VII is connected with a liquid inlet end of a second venous kettle, and a liquid outlet end of the second venous kettle is connected with a port III of the three-way valve VIII.

8. A blood purification apparatus according to claim 1 or 2, wherein the port iii of the three-way valve ii is connected to the inlet port of the third filter, and the outlet port of the third filter is connected to the port iii of the three-way valve iv.

9. A blood purification device as claimed in claim 8, wherein the port III of the three-way valve V is connected with the inlet end of a fourth filter, and the outlet end of the fourth filter is connected with the port III of the three-way valve VI.

10. A blood purification device according to claim 2 or 6, wherein the outlet end of the waste liquid pump is connected to a waste liquid bag.

11. A blood purification apparatus according to claim 3, wherein the outlet end of the substitution pump/dialysis pump is connected to a substitution/dialysis fluid bag.