CN103990193B - A kind of blood purification single pump Double-channel control system and control method thereof - Google Patents
A kind of blood purification single pump Double-channel control system and control method thereof Download PDFInfo
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- CN103990193B CN103990193B CN201410209291.5A CN201410209291A CN103990193B CN 103990193 B CN103990193 B CN 103990193B CN 201410209291 A CN201410209291 A CN 201410209291A CN 103990193 B CN103990193 B CN 103990193B
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- China
- Prior art keywords
- blood
- pipeline
- liquid level
- kettle
- peristaltic pump
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
- A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
- A61M1/1601—Control or regulation
Abstract
A kind of blood purification single pump Double-channel control system and control method thereof, single head two-way peristaltic pump keeps stabilized (steady-state) speed in dialysis procedure, arterial blood is introduced buffering kettle by a pipeline of single head two-way peristaltic pump by tremulous pulse output pipe in patient body, blood after purification in buffering kettle is introduced in patient body by another pipeline of single head two-way peristaltic pump by vein intake line, the liquid level of flow-limiting valve in buffering kettle rises and changes the opening degree restriction blood back amount of valve body in decline process, squeezing valve is closed when cushioning liquid level rising in kettle, liquid level flicks when declining, the present invention can be realized the change of two-way liquid differential thus control the introducing of blood and the direction vector change of extraction by the two-way folding controlling blood back pipeline, avoid the blood coagulation in pipeline simultaneously, and structure is simple, cost is low.
Description
Technical field
The present invention relates to hemodialysis technology field, be specifically related to a kind of blood purification single pump Double-channel control system and control method thereof.
Background technology
Hemodialysis is renal failure one of alternative medicine safely and effectively, has been widely used in clinical at present.In today of multi-disciplinary integrated medical skill development, research and develop intelligent buffer-type hemodialysis system, be the important foundation realizing improving dialysis-effect and quality, increase hemodialysis safety, have very important and urgent demand for current hemodialysis diagnosis and treatment.Add first-level buffer kettle for buffer-type dialysis machine and realize low blood flow drain high flux hemodialysis, draw blood constant airspeed, blood back speed determines by cushioning liquid level in kettle.For ensureing that in buffering kettle, liquid level changes within the specific limits, and when drawing blood constant airspeed, blood back speed should change along with the change of buffering kettle liquid level, thus ensures the supply pumping into blood volume in dialyser, realizes high flux hemodialysis, ensures dialytic efficiency.
For realizing drawing blood, the difference of blood back speed often adopts dual pump apparatus, to control the changes in pump speed of blood back pipeline, but there is following defect:
1, changes in pump speed process is determined by fluid level condition, and control structure is complicated, and the pump other when wherein a pump breaks down still is in work, will cause the danger such as blood coagulation if can not shut down in time.
2, owing to drawing blood vessel road and blood back pipeline is controlled by different blood pumps respectively, add the cost of dialysis system, for portable hemodialysis apparatus, take up space large, and be not easy to install and use.
Summary of the invention
For solving above-mentioned prior art Problems existing, the object of the present invention is to provide a kind of blood purification single pump Double-channel control system and control method thereof, adopt single head two-way peristaltic pump to realize cushioning the smooth change of liquid level in kettle when pump speed is constant by the folding of the two-way of control blood back pipeline.
In order to achieve the above object, the present invention adopts following technical scheme:
The single pump Double-channel control system of a kind of blood purification, comprise the tremulous pulse output pipe 5 and vein intake line 4 that connect patient and buffering kettle, described tremulous pulse output pipe 5 and vein intake line 4 arrange single head two-way peristaltic pump 3, tremulous pulse output pipe 5 and vein intake line 4 respectively with a pipeline connection of single head two-way peristaltic pump 3, single head two-way peristaltic pump 3 keeps stabilized (steady-state) speed in dialysis procedure, arterial blood is introduced buffering kettle by a pipeline of single head two-way peristaltic pump 3 by tremulous pulse output pipe 5 in patient body, blood after purification in buffering kettle is introduced in patient body by another pipeline of single head two-way peristaltic pump 3 by vein intake line 4, described vein intake line 4 is provided be in parallel flow-limiting valve 1 and squeezing valve 2, form flow-limiting valve pipeline 6 and squeezing valve pipeline 7, described flow-limiting valve 1 is connected with the outfan of squeezing valve 2 with controller 10, be connected with the input of described controller 10 the high liquid level sensor 8 that is arranged on and cushions kettle liquid level high limit place and be arranged on the low liquid level sensor 9 cushioning kettle liquid level lower bound place, the outfan of described controller 10 is also connected with single head two-way peristaltic pump 3.
The diameter of described tremulous pulse output pipe 5
with the diameter of vein intake line 4
ratio be
The blood purification described above control method of single pump Double-channel control system, adopt single head two-way peristaltic pump 3, realize cushioning the smooth change of liquid level in kettle when single head two-way peristaltic pump 3 pump speed is constant by the folding of the two-way controlling vein intake line, realize the change of two-way liquid differential thus control the introducing of blood and the direction vector change of extraction, avoiding the blood coagulation in pipeline simultaneously;
Concrete grammar is: draw blood when starting, flow-limiting valve 1 and squeezing valve 2 are all in closure state, and arterial blood enters buffering kettle by tremulous pulse output pipe 5, and now the liquid level cushioned in kettle constantly rises, and draws the direction vector of blood loop blood flow for flowing into buffering kettle; When high liquid level sensor 8 detects that liquid level rising is paramount in limited time, controller 10 sends liquid and flows out buffering kettle instruction and disconnect squeezing valve 2, now draws the direction vector of blood loop blood flow for outflow buffering kettle; Due to the diameter of tremulous pulse output pipe 5
with the diameter of vein intake line 4
ratio be
when squeezing valve 2 disconnects, the blood flow flowed in vein intake line 4 is greater than the blood flow flowed out in tremulous pulse output pipe 5, blood in vein intake line 4 will by flow-limiting valve pipeline 6 and squeezing valve pipeline 7, but the blood flow being entered Venous Blood pipe by squeezing valve pipeline 7 is determined by the caliber of squeezing valve pipeline 7; The liquid level of flow-limiting valve 1 in buffering kettle rises and changes the opening degree control blood back amount of valve body in decline process, therefore by changing the opening degree of flow-limiting valve 1 to regulate the blood flow through flow-limiting valve pipeline 6, thus controls to cushion the speed that in kettle, liquid level declines; When low liquid level sensor 9 detects that liquid level drops to lower bound, controller 10 sends liquid forward and flows into buffering kettle instruction and closed squeezing valve 2, now draws the direction vector of blood loop blood flow for flowing into buffering kettle; The rising of squeezing valve 2 along with liquid level in buffering kettle and the state of the change closed and disconnected that declines, the speed that the opening degree of flow-limiting valve 1 changes depending on liquid level regulates manually or automatically; When squeezing valve 2 closes, blood in squeezing valve pipeline 7 remains static, but the blood in vein intake line 4 and flow-limiting valve pipeline 6 is flow regime, and high lower bound scope in buffering kettle is less, closed and the disconnection switching frequency of squeezing valve 2 is higher, so the blood coagulation probability in squeezing valve pipeline 7 is less.
Compared to the prior art comparatively, the present invention possesses following advantage:
The present invention adopts single head two-way peristaltic pump 3, realize cushioning the smooth change of liquid level in kettle when single head two-way peristaltic pump 3 pump speed is constant by the folding of the two-way controlling vein intake line, realize the change of two-way liquid differential thus control the introducing of blood and the direction vector change of extraction, avoid the blood coagulation in pipeline, and structure is simple, cost is low simultaneously.
Accompanying drawing explanation
Accompanying drawing is structural representation of the present invention.
Detailed description of the invention
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As shown in drawings, the single pump Double-channel control system of a kind of blood purification of the present invention, comprise the tremulous pulse output pipe 5 and vein intake line 4 that connect patient and buffering kettle, described tremulous pulse output pipe 5 and vein intake line 4 arrange single head two-way peristaltic pump 3, tremulous pulse output pipe 5 and vein intake line 4 respectively with a pipeline connection of single head two-way peristaltic pump 3, single head two-way peristaltic pump 3 keeps stabilized (steady-state) speed in dialysis procedure, arterial blood is introduced buffering kettle by a pipeline of single head two-way peristaltic pump 3 by tremulous pulse output pipe 5 in patient body, blood after purification in buffering kettle is introduced in patient body by another pipeline of single head two-way peristaltic pump 3 by vein intake line 4, described vein intake line 4 is provided be in parallel flow-limiting valve 1 and squeezing valve 2, form flow-limiting valve pipeline 6 and squeezing valve pipeline 7, described flow-limiting valve 1 is connected with the outfan of squeezing valve 2 with controller 10, be connected with the input of described controller 10 the high liquid level sensor 8 that is arranged on and cushions kettle liquid level high limit place and be arranged on the low liquid level sensor 9 cushioning kettle liquid level lower bound place, the outfan of described controller 10 is also connected with single head two-way peristaltic pump 3.
The diameter of described tremulous pulse output pipe 5
with the diameter of vein intake line 4
ratio be
As shown in drawings, the blood purification described above control method of single pump Double-channel control system, adopt single head two-way peristaltic pump 3, realize cushioning the smooth change of liquid level in kettle when single head two-way peristaltic pump 3 pump speed is constant by the folding of the two-way controlling vein intake line, realize the change of two-way liquid differential thus control the introducing of blood and the direction vector change of extraction, avoiding the blood coagulation in pipeline simultaneously; Concrete grammar is: draw blood when starting, flow-limiting valve 1 and squeezing valve 2 are all in closure state, and arterial blood enters buffering kettle by tremulous pulse output pipe 5, and now the liquid level cushioned in kettle constantly rises, and draws the direction vector of blood loop blood flow for flowing into buffering kettle; When high liquid level sensor 8 detects that liquid level rising is paramount in limited time, controller 10 sends liquid and flows out buffering kettle instruction and disconnect squeezing valve 2, now draws the direction vector of blood loop blood flow for outflow buffering kettle; Due to the diameter of tremulous pulse output pipe 5
with the diameter of vein intake line 4
ratio be
when squeezing valve 2 disconnects, the blood flow flowed in vein intake line 4 is greater than the blood flow flowed out in tremulous pulse output pipe 5, blood in vein intake line 4 will by flow-limiting valve pipeline 6 and squeezing valve pipeline 7, but the blood flow being entered Venous Blood pipe by squeezing valve pipeline 7 is determined by the caliber of squeezing valve pipeline 7; The liquid level of flow-limiting valve 1 in buffering kettle rises and changes the opening degree control blood back amount of valve body in decline process, therefore by changing the opening degree of flow-limiting valve 1 to regulate the blood flow through flow-limiting valve pipeline 6, thus controls to cushion the speed that in kettle, liquid level declines; When low liquid level sensor 9 detects that liquid level drops to lower bound, controller 10 sends liquid forward and flows into buffering kettle instruction and closed squeezing valve 2, now draws the direction vector of blood loop blood flow for flowing into buffering kettle; The rising of squeezing valve 2 along with liquid level in buffering kettle and the state of the change closed and disconnected that declines, the speed that the opening degree of flow-limiting valve 1 changes depending on liquid level regulates manually or automatically; When squeezing valve 2 closes, blood in squeezing valve pipeline 7 remains static, but the blood in vein intake line 4 and flow-limiting valve pipeline 6 is flow regime, and high lower bound scope in buffering kettle is less, closed and the disconnection switching frequency of squeezing valve 2 is higher, so the blood coagulation probability in squeezing valve pipeline 7 is less.
Therefore, control the closed opportunity with disconnecting of squeezing valve 2, opening degree in conjunction with flow-limiting valve 1 regulates liquid level pace of change, and it is equivalent in vein intake line 4 and tremulous pulse output pipe 5, use blood pump respectively and regulates pump speed to realize the above results respectively according to the change of buffering kettle liquid level.
Claims (2)
1. the single pump Double-channel control system of blood purification, it is characterized in that: comprise all with patient with cushion the tremulous pulse output pipe (5) and vein intake line (4) that kettle is connected, described tremulous pulse output pipe (5) and vein intake line (4) arrange single head two-way peristaltic pump (3), tremulous pulse output pipe (5) and vein intake line (4) respectively with a pipeline connection of single head two-way peristaltic pump (3), single head two-way peristaltic pump (3) keeps stabilized (steady-state) speed in dialysis procedure, arterial blood is introduced buffering kettle by a pipeline of single head two-way peristaltic pump (3) by tremulous pulse output pipe (5) in patient body, blood after purification in buffering kettle is introduced in patient body by another pipeline of single head two-way peristaltic pump (3) by vein intake line (4), described vein intake line (4) is provided with the flow-limiting valve that is in parallel (1) and squeezing valve (2), form flow-limiting valve pipeline (6) and squeezing valve pipeline (7), described flow-limiting valve (1) is all connected with the outfan of controller (10) with squeezing valve (2), be connected with the input of described controller (10) the high liquid level sensor (8) that is arranged on and cushions kettle liquid level high limit place and be arranged on the low liquid level sensor (9) cushioning kettle liquid level lower bound place, the outfan of described controller (10) is also connected with single head two-way peristaltic pump (3).
2. the single pump Double-channel control system of a kind of blood purification according to claim 1, is characterized in that: the diameter of described tremulous pulse output pipe (5)
with the diameter of vein intake line (4)
ratio be
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410209291.5A CN103990193B (en) | 2014-05-15 | 2014-05-15 | A kind of blood purification single pump Double-channel control system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410209291.5A CN103990193B (en) | 2014-05-15 | 2014-05-15 | A kind of blood purification single pump Double-channel control system and control method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN103990193A CN103990193A (en) | 2014-08-20 |
| CN103990193B true CN103990193B (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410209291.5A Expired - Fee Related CN103990193B (en) | 2014-05-15 | 2014-05-15 | A kind of blood purification single pump Double-channel control system and control method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107693924A (en) * | 2017-05-17 | 2018-02-16 | 威海吉威重症医疗制品有限公司 | One kind blocks elimination type catheter |
| CN111529785B (en) * | 2020-05-20 | 2021-06-11 | 浙江大学 | Dialysis machine capable of adjusting blood flow |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4275726A (en) * | 1977-12-09 | 1981-06-30 | Dr. Eduard Fresenius, Chemisch-Pharmazeutische Industrie Kg Apparatebau Kg | Apparatus for fluid balancing under sterile conditions |
| US4585007A (en) * | 1982-05-15 | 1986-04-29 | Kabushiki Kaisha Kyoto Daiichi Kagaku | Method for continuously measuring a specified ingredient in a diluted liquid |
| CN201692386U (en) * | 2010-05-07 | 2011-01-05 | 陈炳华 | Liquid level control device of blood purification artery and vein pot |
| CN203548140U (en) * | 2013-11-04 | 2014-04-16 | 珠海健帆生物科技股份有限公司 | Single-pump-core double-pipe peristaltic pump |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4650461A (en) * | 1985-06-10 | 1987-03-17 | Woods Randall L | Extracapasular cortex irrigation and extraction |
| EP1429822B1 (en) * | 2001-09-25 | 2009-01-07 | Bio Heart & Kidney Inc. | Cardiopulmonary life support system |
| US8038639B2 (en) * | 2004-11-04 | 2011-10-18 | Baxter International Inc. | Medical fluid system with flexible sheeting disposable unit |
| JP4812101B2 (en) * | 2006-06-23 | 2011-11-09 | 日機装株式会社 | Ironing type pump and method for removing flexible tube thereof |
| KR101090414B1 (en) * | 2010-02-23 | 2011-12-06 | 최낙명 | Dialysate pump and blood dialyzing apparatus having the same |
| US20110313343A1 (en) * | 2010-06-18 | 2011-12-22 | Alcon Research, Ltd. | Phacoemulsification Fluidics System Having a Single Pump Head |
-
2014
- 2014-05-15 CN CN201410209291.5A patent/CN103990193B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4275726A (en) * | 1977-12-09 | 1981-06-30 | Dr. Eduard Fresenius, Chemisch-Pharmazeutische Industrie Kg Apparatebau Kg | Apparatus for fluid balancing under sterile conditions |
| US4585007A (en) * | 1982-05-15 | 1986-04-29 | Kabushiki Kaisha Kyoto Daiichi Kagaku | Method for continuously measuring a specified ingredient in a diluted liquid |
| CN201692386U (en) * | 2010-05-07 | 2011-01-05 | 陈炳华 | Liquid level control device of blood purification artery and vein pot |
| CN203548140U (en) * | 2013-11-04 | 2014-04-16 | 珠海健帆生物科技股份有限公司 | Single-pump-core double-pipe peristaltic pump |
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| CN103990193A (en) | 2014-08-20 |
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Granted publication date: 20160224 Termination date: 20190515 |