CN102908686B - Balance cavity leak detecting system for blood purification - Google Patents
Balance cavity leak detecting system for blood purification Download PDFInfo
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- CN102908686B CN102908686B CN201210261635.8A CN201210261635A CN102908686B CN 102908686 B CN102908686 B CN 102908686B CN 201210261635 A CN201210261635 A CN 201210261635A CN 102908686 B CN102908686 B CN 102908686B
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- 239000008280 blood Substances 0.000 title claims abstract description 22
- 210000004369 blood Anatomy 0.000 title claims abstract description 22
- 238000000746 purification Methods 0.000 title claims abstract description 13
- 238000012545 processing Methods 0.000 claims abstract description 41
- 238000001514 detection method Methods 0.000 claims abstract description 35
- 239000002699 waste material Substances 0.000 claims abstract description 35
- 239000000385 dialysis solution Substances 0.000 claims description 35
- 239000007788 liquid Substances 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 17
- 230000004888 barrier function Effects 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 16
- 238000012360 testing method Methods 0.000 claims description 9
- 239000000523 sample Substances 0.000 claims description 5
- 238000011897 real-time detection Methods 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 210000001124 body fluid Anatomy 0.000 description 2
- 239000010839 body fluid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000002560 therapeutic procedure Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Abstract
The invention provides a balance cavity leak detecting system for blood purification, belonging to the field of blood purification. The system comprises a balance cavity and a detecting circuit, wherein a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve and a fourth electromagnetic valve are sequentially mounted at a waste liquor inlet, a dialysate inlet, a waste liquor outlet and a dialysate outlet of the cavity body in the balance cavity; a first electrode is mounted at any place of the first electromagnetic valve and the third electromagnetic valve, while a third electrode is mounted at the other place of the first electromagnetic valve and the third electromagnetic valve; a second electrode is mounted at any place of the second electromagnetic valve and the fourth electromagnetic valve, while a fourth electrode is mounted at the other place of the second electromagnetic valve and the fourth electromagnetic valve; a signal generating circuit provides electric detection signals to the first electrode and the second electrode; and the third electrode and the fourth electrode output the signals to a signal processing circuit. The detecting system has higher precision of leak detection, and real-time detection can be implemented.
Description
Technical field
The invention belongs to a kind of blood cleaning equipment checkout gear, specifically a kind of blood purification counter balance pocket leak detection system.
Background technology
In blood cleaning equipment, mainly comprise bloody path, fluid path and control system three parts.Bloody path system sets up a blood circulator circuit in vitro for patient; Liquid-way system produces the dialysis solution close with normal human's body fluid components, and control system controls all parts running and the every security parameter of watch-dog, ensures the running of machine normal safe.In normal therapeutic process, blood is drawn in patient body, and the dialysis solution meeting the every physiological parameter of human body produced at dialyser place and blood cleaning equipment exchanges, after correcting the electrolyte of patient and body fluid balance, then by defeated for blood time patient body.
The weight balance wanting to maintain patient also accurately controls patient's dehydrating amount, a bascule just must be had in blood cleaning equipment, in guarantor unit's time, two kinds of amount of liquid of this device of turnover are completely equal, and current blood cleaning equipment mainly adopts a kind of mode of counter balance pocket to control fluid balance.Whether the electromagnetic valve in counter balance pocket is according to control system order regular event, can whether the barrier film of electromagnetic valve and cavity centre produces leaks and will directly have influence on the normal operation of balance sysmte, therefore monitor will directly maintain patient's life security over the course for the treatment of to the leakage of counter balance pocket.
Counter balance pocket in existing blood cleaning equipment, generally adopt to carry out detecting to leakage situation in two ways and judge: the first scheme is installation site sensor on the barrier film in counter balance pocket, judges whether counter balance pocket solenoid and diaphragm leak by the position of barrier film movement.Its shortcoming is: the pressure differential at barrier film two ends is very little, and cannot detect electromagnetic valve and diaphragm minute leakage, accuracy of detection is lower.
First scheme is when treating interval or equipment self-inspection, controls counter balance pocket solenoid and closes or open mode, balances chamber pressurization by pump, judges that pressure maintenance situation is to detect electromagnetic valve and whether diaphragm leaks.Its shortcoming is: can interrupt normal therapeutic process over the course for the treatment of, and can not detect in real time, there is potential safety hazard.
Summary of the invention
The present invention is intended at least solve the technical problem existed in prior art, innovatively propose a kind of blood purification counter balance pocket leak detection system especially, utilize the detection signal of telecommunication to detect, accuracy of detection is higher, and real-time detection can be realized, improve safety.
In order to realize above-mentioned purpose of the present invention, the invention provides a kind of blood purification counter balance pocket leak detection system, comprise counter balance pocket (1), the inside of this counter balance pocket has cavity (6), this cavity (6) is separated into waste chamber (A) and dialysis solution chamber (B) by barrier film (7), is provided with the first electromagnetic valve (5-1), the second electromagnetic valve (5-2), the 3rd electromagnetic valve (5-3) and the 4th electromagnetic valve (5-4) successively in the waste liquid entrance of this cavity (6), dialysis solution entrance, waste liquid outlet and dialysis solution exit;
It is characterized in that: at any place of this first electromagnetic valve (5-1) and the 3rd electromagnetic valve (5-3), the first electrode is installed, and another place is provided with the 3rd electrode; At any place of this second electromagnetic valve (5-2) and the 4th electromagnetic valve (5-4), the second electrode is installed, and another place is provided with the 4th electrode;
Also comprise testing circuit (4), this testing circuit (4) is made up of signal generating circuit (8) and signal processing circuit (9), and wherein said signal generating circuit (8) is for providing the detection signal of telecommunication respectively to the first electrode, the second electrode;
This detection signal of telecommunication by the first electrode, the electromagnetic valve of answering with this first electrode pair, waste chamber (A), the electromagnetic valve of answering with the 3rd electrode pair, is transferred to this signal processing circuit (9) by the 3rd electrode successively;
This detection signal of telecommunication also successively by the second electrode, the electromagnetic valve of answering with this second electrode pair, dialysis solution chamber (B), the electromagnetic valve of answering with the 4th electrode pair, is transferred to this signal processing circuit (9) by the 4th electrode.
This first electrode, the 3rd electrode, the second electrode and the 4th electrode are separately installed with a ground electrode (3) on the one end away from corresponding electromagnetic valve.
This first electrode, the 3rd electrode, the second electrode and the 4th electrode are needle-like or ring-type probe.
This detection signal of telecommunication is pulse signal.
This signal processing circuit (9) is for judging the conducting situation of the first electrode in waste liquid input process, dialysis solution input process, the 3rd electrode, the second electrode and the 4th electrode.
In waste liquid input process, if the first electrode and the 3rd electrode conduction, then this signal processing circuit (9) judges that the electromagnetic valve of answering with the 3rd electrode pair exists and leaks;
If the second electrode and the 4th electrode conduction, then this signal processing circuit (9) judges that the electromagnetic valve of answering with this second electrode pair exists and leaks;
If this first electrode and the 4th electrode conduction, then this signal processing circuit (9) judges that barrier film (7) exists leakage.
In dialysis solution input process, if the first electrode and the 3rd electrode conduction, then this signal processing circuit (9) judges that the electromagnetic valve of answering with this first electrode pair exists and leaks;
If the second electrode and the 4th electrode conduction, then this signal processing circuit (9) judges that the electromagnetic valve of answering with the 4th electrode pair exists and leaks;
If the second electrode and the 3rd electrode conduction, then this signal processing circuit (9) judges that this barrier film (7) exists leakage.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
1, utilize the detection signal of telecommunication to detect, accuracy of detection is higher, and can realize real-time detection, improves safety;
2, this first electrode, the 3rd electrode, the second electrode and the 4th electrode are separately installed with a ground electrode on the one end away from corresponding electromagnetic valve, the detection signal of telecommunication preventing electrode from receiving transmits to other directions, ensures that detecting electric signal streams returns signal processing circuit;
3, this first electrode, the 3rd electrode, the second electrode and the 4th electrode are needle-like or ring-type probe, have good electric conductivity;
4, detect the signal of telecommunication and select pulse signal, can effectively avoid electrode to corrode in detection electric signal transmission process.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the structural representation of counter balance pocket in the present invention;
Fig. 2 is the circuit theory diagrams of testing circuit in the present invention;
Fig. 3 is the circuit theory diagrams of the first embodiment in the present invention.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " longitudinal direction ", " transverse direction ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
In describing the invention, unless otherwise prescribed and limit, it should be noted that, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly be connected, also indirectly can be connected by intermediary, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
Blood purification counter balance pocket leak detection system, comprise counter balance pocket 1 and testing circuit 4, as shown in Figure 1, the inside of this counter balance pocket has cavity 6, this cavity 6 is separated into waste chamber A and dialysis solution chamber B by barrier film 7, is provided with the first electromagnetic valve 5-1, the second electromagnetic valve 5-2, the 3rd electromagnetic valve 5-3 and the 4th electromagnetic valve 5-4 successively in the waste liquid entrance of this cavity 6, dialysis solution entrance, waste liquid outlet and dialysis solution exit.At any place of this first electromagnetic valve 5-1 and the 3rd electromagnetic valve 5-3, the first electrode is installed, and another place is provided with the 3rd electrode; At any place of this second electromagnetic valve 5-2 and the 4th electromagnetic valve 5-4, the second electrode is installed, and another place is provided with the 4th electrode.Such as the first electrode is arranged on the waste liquid porch of the first electromagnetic valve 5-1,3rd electrode is arranged on the waste liquid outlet place of the 3rd electromagnetic valve 5-3, and the second electrode is arranged on the dialysis solution exit of the 4th electromagnetic valve 5-4, the 4th electrode is arranged on the dialysis solution porch of the second electromagnetic valve 5-2.
As shown in Figure 2, this testing circuit 4 is made up of signal generating circuit 8 and signal processing circuit 9, wherein signal generating circuit 8 is for providing the detection signal of telecommunication respectively to the first electrode, the second electrode, this detection signal of telecommunication by the first electrode, the electromagnetic valve of answering with this first electrode pair, waste chamber A, the electromagnetic valve of answering with the 3rd electrode pair, is transferred to this signal processing circuit 9 by the 3rd electrode successively; And detect the signal of telecommunication also successively by the second electrode, the electromagnetic valve of answering with this second electrode pair, dialysis solution chamber B, the electromagnetic valve of answering with the 4th electrode pair, be transferred to this signal processing circuit 9 by the 4th electrode.
This first electrode, the 3rd electrode, the second electrode and the 4th electrode are separately installed with a ground electrode 3 on the one end away from corresponding electromagnetic valve, thus the detection signal of telecommunication preventing electrode from receiving transmits to other directions.This ground electrode 3 can direct ground connection, also can be connected with the earth terminal of signal generating circuit 8.
This signal processing circuit 9 is for judging the conducting situation of the first electrode, the 3rd electrode, the second electrode and the 4th electrode in waste liquid input process, dialysis solution input process.
In waste liquid input process, if the first electrode and the 3rd electrode conduction, then this signal processing circuit 9 judges that the electromagnetic valve of answering with the 3rd electrode pair exists and leaks; If the second electrode and the 4th electrode conduction, then this signal processing circuit 9 judges that the electromagnetic valve of answering with this second electrode pair exists and leaks; If this first electrode and the 4th electrode conduction, then this signal processing circuit 9 judges that barrier film 7 exists leakage.
In dialysis solution input process, if the first electrode and the 3rd electrode conduction, then this signal processing circuit 9 judges that the electromagnetic valve of answering with this first electrode pair exists and leaks; If the second electrode and the 4th electrode conduction, then this signal processing circuit 9 judges that the electromagnetic valve of answering with the 4th electrode pair exists and leaks; If the second electrode and the 3rd electrode conduction, then this signal processing circuit 9 judges that this barrier film 7 exists leakage.
In addition, in the present invention, this first electrode, the 3rd electrode, the second electrode and the 4th electrode select needle-like or ring-type probe, and probe has good electric conductivity.The detection signal of telecommunication that signal generating circuit 8 provides is pulse signal, can effectively avoid electrode to corrode in detection electric signal transmission process.
In the first embodiment of the present invention, the waste liquid porch of the first electromagnetic valve 5-1 is arranged on the first electrode 2-1,3rd electrode 2-3 is arranged on the waste liquid outlet place of the 3rd electromagnetic valve 5-3, and the second electrode 2-2 is arranged on the dialysis solution porch of the second electromagnetic valve 5-2, the dialysis solution exit that 4th electrode 2-4 is arranged on the 4th electromagnetic valve 5-2 is example, as shown in Figure 3, this blood purification counter balance pocket leak detection system comprises counter balance pocket 1 and testing circuit 4, the inside of this counter balance pocket 1 has cavity 6, and this cavity 6 is separated into waste chamber A and dialysis solution chamber B by barrier film 7.The first electromagnetic valve 5-1, the second electromagnetic valve 5-2, the 3rd electromagnetic valve 5-3 and the 4th electromagnetic valve 5-4 is separately installed with in the waste liquid entrance of this cavity 6, dialysis solution entrance, waste liquid outlet and dialysis solution exit; Extremely far the first electrode 2-1, the first ground electrode 3-1 are installed successively in the waste liquid porch of the first electromagnetic valve 5-1 by near; Extremely far the second electrode 2-2, the second ground electrode 3-2 are installed successively in the dialysis solution porch of the second electromagnetic valve 5-2 by near; Extremely far the 3rd electrode 2-3, the 3rd ground electrode 3-3 are installed successively at the waste liquid outlet place of the 3rd electromagnetic valve 5-3 by near; Extremely far the 4th electrode 2-4, the 4th ground electrode 3-4 are installed successively in the dialysis solution exit of the 4th electromagnetic valve 5-4 by near.
This testing circuit 4 is made up of signal generating circuit 8 and signal processing circuit 9, and wherein this signal generating circuit 8 provides the detection signal of telecommunication respectively to the first electrode 2-1 and the second electrode 2-2; This detection signal of telecommunication by the first electrode 2-1, the first electromagnetic valve 5-1, waste chamber A and the 3rd electromagnetic valve 5-3, is transferred to signal processing circuit 9 by the 3rd electrode 2-3 successively; For the second electrode 2-2, this detection signal of telecommunication by the second electrode 2-2, the second electromagnetic valve 5-2, dialysis solution chamber B and the 4th electromagnetic valve 5-4, is transferred to signal processing circuit by the 4th electrode 2-4 successively.
The operation principle of the present embodiment is: in waste liquid input process, open the first electromagnetic valve 5-1 and the 4th electromagnetic valve 5-4, now the second electromagnetic valve 5-2 and the 3rd electromagnetic valve 5-3 is in closed condition, and waste chamber A is filled by waste liquid, and forces the dialysis solution of dialysis solution chamber B moderate to be discharged.Because the first electromagnetic valve 5-1 is in opening and the 3rd electromagnetic valve 5-3 is in closure state, if the sealing of the 3rd electromagnetic valve 5-3 is fine, there is not leakage, then the first electrode 2-1 and the 3rd electrode 2-3 can not conducting; When the first electrode 2-1 and the 3rd electrode 2-3 conducting, this signal processing circuit 9 can judge that the 3rd electromagnetic valve 5-3 exists and leak.Because the second electromagnetic valve 5-2 is in closure state and the 4th electromagnetic valve 5-4 is in opening, if the good airproof performance of the second electromagnetic valve 5-2, there is not leakage, then the second electrode 2-2 and the 4th electrode 2-4 can not conducting; When the second electrode 2-2 and the 4th electrode 2-4 conducting, this signal processing circuit 9 can judge that this second electromagnetic valve 5-2 exists and leak.When this first electrode 5-1 and the 4th electrode 5-4 conducting, this signal processing circuit 9 can judge that barrier film 7 exists and leak.
In dialysis solution input process, open the second electromagnetic valve 5-2 and the 3rd electromagnetic valve 5-3 and close the first electromagnetic valve 5-1 and the 4th electromagnetic valve 5-4, dialysis solution chamber B is filled by dialysis solution, and forces the waste liquid of waste chamber A moderate to be discharged.Because the first electromagnetic valve 5-1 is in closure state and the 3rd electromagnetic valve 5-3 is in opening, if the first electromagnetic valve 5-1 sealing is fine, there is not leakage, then the first electrode 2-1 and the 3rd electrode 2-3 can not conducting; When the first electrode 2-1 and the 3rd electrode 2-3 conducting, signal processing circuit 9 can judge that the first electromagnetic valve 5-1 exists and leak.Because the 4th electromagnetic valve 5-4 is in closure state and the second electromagnetic valve 5-2 is in opening, if the 4th electromagnetic valve 5-4 sealing is fine, there is not leakage, then the second electrode 2-2 and the 4th electrode 2-4 can not conducting; When the second electrode 2-2 and the 4th electrode 2-4 conducting, this signal processing circuit 9 can judge that the 4th electromagnetic valve 5-4 exists and leak.When the second electrode 2-2 and the 3rd electrode 2-3 conducting, then this signal processing circuit 9 judges that this barrier film 7 exists leakage.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (4)
1. a blood purification counter balance pocket leak detection system, comprise counter balance pocket (1), the inside of this counter balance pocket has cavity (6), this cavity (6) is separated into waste chamber (A) and dialysis solution chamber (B) by barrier film (7), is provided with the first electromagnetic valve (5-1), the second electromagnetic valve (5-2), the 3rd electromagnetic valve (5-3) and the 4th electromagnetic valve (5-4) successively in the waste liquid entrance of this cavity (6), dialysis solution entrance, waste liquid outlet and dialysis solution exit;
It is characterized in that: at any place of this first electromagnetic valve (5-1) and the 3rd electromagnetic valve (5-3), the first electrode is installed, and another place is provided with the 3rd electrode; At any place of this second electromagnetic valve (5-2) and the 4th electromagnetic valve (5-4), the second electrode is installed, and another place is provided with the 4th electrode;
Also comprise testing circuit (4), this testing circuit (4) is made up of signal generating circuit (8) and signal processing circuit (9), and wherein said signal generating circuit (8) is for providing the detection signal of telecommunication respectively to the first electrode, the second electrode;
This detection signal of telecommunication by the first electrode, the electromagnetic valve of answering with this first electrode pair, waste chamber (A), the electromagnetic valve of answering with the 3rd electrode pair, is transferred to this signal processing circuit (9) by the 3rd electrode successively;
This detection signal of telecommunication also successively by the second electrode, the electromagnetic valve of answering with this second electrode pair, dialysis solution chamber (B), the electromagnetic valve of answering with the 4th electrode pair, is transferred to this signal processing circuit (9) by the 4th electrode;
Described signal processing circuit (9) is for judging the conducting situation of the first electrode in waste liquid input process, dialysis solution input process, the 3rd electrode, the second electrode and the 4th electrode;
In waste liquid input process, if the first electrode and the 3rd electrode conduction, then this signal processing circuit (9) judges that the electromagnetic valve of answering with the 3rd electrode pair exists and leaks; If the second electrode and the 4th electrode conduction, then this signal processing circuit (9) judges that the electromagnetic valve of answering with this second electrode pair exists and leaks; If this first electrode and the 4th electrode conduction, then this signal processing circuit (9) judges that barrier film (7) exists leakage;
In dialysis solution input process, if the first electrode and the 3rd electrode conduction, then this signal processing circuit (9) judges that the electromagnetic valve of answering with this first electrode pair exists and leaks; If the second electrode and the 4th electrode conduction, then this signal processing circuit (9) judges that the electromagnetic valve of answering with the 4th electrode pair exists and leaks; If the second electrode and the 3rd electrode conduction, then this signal processing circuit (9) judges that this barrier film (7) exists leakage.
2. blood purification counter balance pocket leak detection system according to claim 1, is characterized in that: this first electrode, the 3rd electrode, the second electrode and the 4th electrode are separately installed with a ground electrode (3) on the one end away from corresponding electromagnetic valve.
3. blood purification counter balance pocket leak detection system according to claim 2, is characterized in that: this first electrode, the 3rd electrode, the second electrode and the 4th electrode are needle-like or ring-type probe.
4. blood purification counter balance pocket leak detection system according to claim 1, is characterized in that: this detection signal of telecommunication is pulse signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210261635.8A CN102908686B (en) | 2012-07-26 | 2012-07-26 | Balance cavity leak detecting system for blood purification |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210261635.8A CN102908686B (en) | 2012-07-26 | 2012-07-26 | Balance cavity leak detecting system for blood purification |
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| CN102908686A CN102908686A (en) | 2013-02-06 |
| CN102908686B true CN102908686B (en) | 2015-02-18 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114812959A (en) * | 2022-04-24 | 2022-07-29 | 重庆山外山血液净化技术股份有限公司 | Blood purifies and uses balanced chamber leak detection optimizing system |
| CN115089793B (en) * | 2022-06-20 | 2025-05-30 | 重庆山外山血液净化技术股份有限公司 | A balance chamber seal, a balance chamber assembly and a leakage detection method thereof |
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| JP2002139395A (en) * | 2000-11-01 | 2002-05-17 | Maeda Corp | Water-leakage position detection device and method therefor |
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| US4997570A (en) * | 1988-11-04 | 1991-03-05 | Fresenius Ag | Method and device for ultrafiltration during hemodialysis |
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