CN2783995Y - Balanced liquid supply device - Google Patents
Balanced liquid supply device Download PDFInfo
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- CN2783995Y CN2783995Y CN 200520055490 CN200520055490U CN2783995Y CN 2783995 Y CN2783995 Y CN 2783995Y CN 200520055490 CN200520055490 CN 200520055490 CN 200520055490 U CN200520055490 U CN 200520055490U CN 2783995 Y CN2783995 Y CN 2783995Y
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- liquid
- displacement
- balance
- waste liquid
- fluid
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Abstract
The utility model provides a liquid balanced liquid supplying device which comprises a liquid conveying component, a conveyance adjusting component and a balancing balance, wherein the liquid conveying component is connected with a waste liquid storage component and the displacement liquid placed on the balanced balance by a liquid conveying pipe, the conveyance adjusting component is connected with the liquid conveying component, the liquid conveying component is a synchronous double-pipe pump of which the two pipelines are respectively connected with a displacement liquid conveying pipeline and a waste liquid recovering pipeline, and the conveyance adjusting component is simultaneously connected with the displacement liquid conveying pipeline and the waste liquid recovering pipeline. The liquid balanced liquid supplying device has the advantages of simplified and reasonable structure, high accuracy, various function modes and good safety performance. The utility model can be used for equicontinuity artery-vein haemodialysis / filtration devices of hemodialysis machines and blood filters.
Description
Technical field
This utility model relates to seriality artery-vein hemodialysis/filtration equipment, particularly a kind of fluid-balancing liquid-supplying device.
Background technology
Seriality artery-vein hemodialysis/filtration is the blood purification therapy that a kind of seriality substitutes impaired renal function, is the Therapeutic Method of realizing hemofiltration on the basis of hemodialysis.
Hemodialysis is by a kind of dialyser of small-molecule substance (as electrolyte, micromolecule kidney toxin etc.) by being made by semipermeable membrane that can only allow with blood, make the side of blood at film, displacement liquid is at the opposite side of film, the solution of both sides is by disperse, osmosis, be solute by the low side infiltration of the high side direction concentration of concentration, allow in the blood in, the micromolecule toxin is penetrated in the displacement liquid.Existing hemodialysis apparatus mainly comprises blood circuit and displacement liquid loop two big ingredients, blood circuit is meant from patient's tremulous pulse blood is drawn through the wriggling blood pump, wait across semipermeable membrane and displacement liquid through dialyser and to ooze ion and hand over and suffer, correct acid base imbalance, remove after lps molecule and the redundant moisture, return patient's vein; The displacement liquid loop is meant that the reverse osmosis water that will introduce is after heating and being configured to the displacement liquid of standard in proportion, the bascule of flowing through, under the effect of bascule, guarantee the balance of displacement liquid turnover dialyser, make displacement liquid in dialyser, carry out effectively waiting oozing ion exchange across semipermeable membrane, thereby reach the effect of treatment with blood.Hemofiltration is on the blood circuit of hemodialysis, with the isoosmotic displacement liquid of human body be preheating to the corresponding temperature of human body after, slowly inject the arterial end or the vein end of blood circuit with certain flow, the displacement liquid of standard is directly mixed with blood, and enter human body, to reach the correction acid base imbalance, reduce the therapeutic effect of lps molecule and removing excessive moisture.Meanwhile, utilize the balance liquid feed device to take out the liquid (waste liquid) of corresponding deal, thereby realize that displacement liquid and waste liquid in the hemofiltration therapeutic process pass in and out the balance of human body from the filter of blood circuit or the water side of dialyser.
The balance feed flow dependency structure that existing hemodialysis/filtration equipment adopts mainly is provided with liquor pump respectively at turnover dialyser or filter end, two liquor pumps are separately worked under the controlling of control device independently, guarantee the balance of displacement liquid turnover dialyser or filter; If the turnover of displacement liquid measures existing deviation, the operating rate by two liquor pumps of control device adjusting can make the turnover amount reach balance again so; This balance liquid feed device can be realized the balance adjustment of displacement liquid, but also there is significant disadvantages: because the balance conveying that two pumps carry out displacement liquid is set respectively, and these two pumps are independent operatings, so guarantee to carry balance just to need control device to have control accuracy preferably, like this equipment proposed higher requirement; The more important thing is quit work, and another continues operation and carries displacement liquid, will make displacement liquid unbalance, produces serious malpractice, so there is tangible potential safety hazard in this balance liquid feed device if one of them in two pumps goes wrong.
The utility model content
The purpose of this utility model be to provide a kind of security performance good, control conveniently, simple in structure, low cost of manufacture, be adapted at the fluid-balancing liquid-supplying device of applying in seriality artery-vein hemodialysis/filtration equipment.
The purpose of this utility model is achieved through the following technical solutions: this fluid-balancing liquid-supplying device comprises the liquid conveying member, the feed adjustment part, balance claims, the liquid conveying member is connected with displacement liquid that places balance to deserve to be called and waste liquid storaging piece by tube for transfusion, the feed adjustment part is connected with the liquid conveying member, it is characterized in that: described liquid conveying member is synchronous two-tube pump, two pipelines of synchronous two-tube pump are connected to displacement liquid transfer pipeline and waste liquid reclaim line, described feed adjustment part is connected with displacement liquid transfer pipeline and waste liquid reclaim line simultaneously, simultaneously the flow of displacement liquid transfer pipeline and waste liquid reclaim line is regulated.
Described feed adjustment part is an eccentric wheel structure, comprise shell, eccentric, motor, control circuit, displacement liquid transfer pipeline and waste liquid reclaim line are passed through shell, described eccentric is in shell and be arranged between displacement liquid transfer pipeline and the waste liquid reclaim line, its maximum diameter can contact with displacement liquid transfer pipeline or waste liquid reclaim line, displacement liquid transfer pipeline or waste liquid reclaim line are pressed folder, described eccentric is connected with motor, described motor claims to be connected by control circuit and balance, claims the eccentric wheel load of feedback signal control step driven by motor to insert and put by balance and changes liquid transfer pipeline or waste liquid reclaim line.
Described feed adjustment part also can be the electromagnetic valve pipe clamp structure, comprise electromagnetic valve, control circuit, displacement liquid transfer pipeline and waste liquid reclaim line are passed electromagnetic valve respectively, described electromagnetic valve claims to be connected by control circuit and balance, claim opening or closing of feedback signal control electromagnetic valve by balance, thereby the control electromagnetic valve is pressed folder displacement liquid transfer pipeline or waste liquid reclaim line.
Version except aforementioned two kinds of feed adjustment parts, as long as can realize pressing the frame for movement of folder displacement liquid transfer pipeline or waste liquid reclaim line all to belong to the form of the equivalence replacement of this feed adjustment part, belong to the technical scheme under this utility model design together by the control requirement.
Described feed adjustment part can place the arrival end of two pipelines of synchronous two-tube pump, and the flow that is entered synchronous two-tube pump by displacement liquid transfer pipeline and waste liquid reclaim line is regulated.
Described synchronous two-tube pump is made up of the pump case that is provided with two passes, roll extrusion rotor and drive motors, and the roll extrusion rotor is positioned at pump case, distributes axisymmetricly and is connected with drive motors.
The quantity of described roll extrusion rotor is more than 3.
This fluid-balancing liquid-supplying device can be applicable to seriality artery-vein hemodialysis/filtration equipment, as haemodialysis control unit, blood filtering machine etc.
Action principle of the present utility model is: synchronous two-tube pump is roll extrusion displacement liquid transfer pipeline and waste liquid reclaim line conveying liquid simultaneously, article two, flow direction is opposite in the pipeline, the displacement liquid transfer pipeline will be hung on balance and claim the displacement liquid on the pallet to import the tremulous pulse or the vein end of blood circuit through synchronous two-tube pump roll extrusion, the waste liquid reclaim line will be dialled back the liquid waste of corresponding equivalent through synchronous two-tube pump from blood circuit, and will feed back to balance and claim in the waste fluid bag of pallet; Because acting on simultaneously, synchronous two-tube pump drives displacement liquid transfer pipeline or waste liquid reclaim line, so the liquid flow of two pipelines can carry out synchronously, pipeline can not occur and carry liquid and the out-of-work situation of another pipeline, and the weight that easier realization balance deserves to be called weighing keeps stable; When the weight that deserves to be called increase when balance exceeds the error amount that sets with the ratio of initial weight, by the feed adjustment part in the synchronous two-tube mouth of a river end front clamp waste liquid reclaim line that pumps into, oppressing this pipeline reduces flow, under the constant situation of the effusive flow of displacement liquid, the waste liquid flow that returns reduces, the weight that detects when the weight that deserves to be called up to balance recovers initial, promptly effusive displacement liquid reaches dynamic equilibrium with the waste liquid that returns; Compare with initial weight when the weight of balance shown in deserving to be called and to occur reducing, then explanation is flowed out displacement liquid that balance claims more than the waste liquid that returns, when the weight that deserves to be called minimizing when balance exceeds the error amount that sets with the ratio of initial weight, clamp the displacement liquid transfer pipeline by the feed adjustment part, oppressing this pipeline causes the effusive flow of displacement liquid to reduce, the waste liquid that returns then increases relatively, thereby the weight of impelling balance to claim returns to initial weight, promptly reaches the dynamic equilibrium of effusive displacement liquid and the waste liquid that returns.
The relative prior art of this utility model has following advantage and effect: (1) designs simplification, reasonable, degree of accuracy height; This utility model adopts the setting of synchronous two-tube pump to be easy to realize the balance of fluid turnover, with respect to the existing structure of using two independent single tube pumps to be provided with, the flow-control degree of accuracy of the technical program is higher, and it only takies the volume of single pump, the outfit of equipment volume-diminished, can obviously save the production cost of equipment, placement, control and operation are all very convenient.(2) action mode is various; This utility model utilizes balance regulator to control the flow of synchronous two-tube pump, make balance claim only to play and keep the constant Stabilization of weight, this control mode allows to change the flow of displacement liquid in therapeutic process, both changed the rotating speed of synchronous two-tube pump, do not cause the unbalanced situation of liquid to take place again, for the medical personnel provides personalized therapeutic scheme.(3) security performance is good; Structures shape of the present utility model this equipment drive displacement liquid transfer pipeline and waste liquid reclaim line simultaneously and carry displacement liquid and waste liquid, so the liquid flow of two pipelines carries out synchronously, a pipeline can not occur and carry liquid and the out-of-work situation of another pipeline, can avoid because of the unbalance malpractice of displacement liquid and waste liquid takes place, and the weight that the easier realization balance of this equipment deserves to be called weighing keeps stable.
Description of drawings
Fig. 1 has been to use the structural representation of the hemofiltration equipment of this fluid-balancing liquid-supplying device.
Fig. 2 is the sketch map of eccentric wheel structure in the fluid-balancing liquid-supplying device shown in Figure 1.
Fig. 3 has been to use the structural representation of the hemofiltration equipment of another structured liquids balance liquid feed device.
Fig. 4 is the sketch map of electromagnetic valve pipe clamp structure in the fluid-balancing liquid-supplying device shown in Figure 3.
Fig. 5 is the structural representation that this fluid-balancing liquid-supplying device is used in combination with haemodialysis control unit.
Fig. 6 is the structural representation that the fluid-balancing liquid-supplying device with another structure is used in combination with haemodialysis control unit.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing this utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Fig. 1 shows the concrete structure that has used hemofiltration equipment of the present utility model, and as seen from Figure 1, this hemofiltration equipment comprises blood circuit, balance feed flow loop.Described blood circuit is connected and composed by members such as blood pump 1, heparin pump 2, tremulous pulse kettle 3, dialyser 4, vein kettle 5, choked flow folder 6, air monitor 7; Described balance feed flow loop comprises that balance claims 8, eccentric wheel structure regulating part 9, synchronous two-tube pump 10, described balance claims to hang with together on 8 displacement liquid bag 11 and waste fluid bag 12, described displacement liquid bag 11 is by on the passage of displacement liquid connection tube 13 through being connected to synchronous two-tube pump 10 behind the eccentric wheel structure regulating part 9, be connected to tremulous pulse kettle 3 again by this passage, described waste fluid bag 12 is connected to eccentric wheel structure regulating part 9 by waste liquid connection tube 14 behind another passage of synchronous two-tube pump 10, be connected with the waste liquid output channel of dialyser 4 then, the waste liquid output channel of dialyser 4 is simultaneously by effusion meter 15, ultrafiltrate pump 16 is connected with ultrafiltrate bag 17, utilizes ultrafiltrate pump 16 to realize taking away at regular time and quantity the ultrafiltration function of excessive moisture in the body from blood circuit.The concrete structure of described eccentric wheel structure regulating part 9 as shown in Figure 2, comprise pipe clamp shell 9-1, eccentric 9-2, motor 9-3, the control circuit (not shown), displacement liquid connection tube 13 passes through pipe clamp shell 9-1 with waste liquid connection tube 14, described eccentric 9-2 is in pipe clamp shell 9-1 and be arranged between displacement liquid connection tube 13 and the waste liquid connection tube 14, its maximum diameter can contact with displacement liquid connection tube 13 or waste liquid connection tube 14, displacement liquid connection tube 13 or waste liquid connection tube 14 are pressed folder, described eccentric 9-2 is connected with motor 9-3, described motor 9-3 claims 8 to be connected by control circuit and balance, claims 8 feedback signal control step motor 9-3 to drive eccentric 9-2 by balance and presses folder displacement liquid connection tube 13 or waste liquid connection tube 14.Described synchronous two-tube pump 10 is made up of the pump case that is provided with two passes, 3 roll extrusion rotors and drive motors, and 3 roll extrusion rotors are positioned at pump case, distributes axisymmetricly and is connected with drive motors.
The mechanism of this balance liquid feed device is: after the start, under the roll extrusion of synchronous two-tube pump 10, when balance claims that initial relatively the weighing of weight on 8 increases, illustrate that the displacement liquid that flows out displacement liquid bag 11 is less than the waste liquid that returns waste fluid bag 12, the waste liquid that returns is increased, and promptly the waste liquid of drawing back from human body is more than the displacement liquid that enters human body; When balance claims on 8 that the ratio of the weight that increases and initial weight exceeds the error amount that sets, control circuit control step motor 9-3 drives eccentric 9-2 at synchronous two-tube pump 10 water inlet end front clamp waste liquid connection tubes 14, oppressing this connection tube can make the waste liquid flow reduce, under the constant situation of the effusive flow of displacement liquid, the waste liquid flow that returns reduces, the weight that detects when balance claims weight on 8 to recover initial, promptly effusive displacement liquid reaches dynamic equilibrium with the waste liquid that returns.When the relative initial weight of the weight shown in balance claims on 8 reduces, illustrate that flowing out balance claims 8 displacement liquid more than the waste liquid that returns, when balance claims on 8 that the ratio of the weight that reduces and initial weight exceeds the error amount that sets, control circuit control step motor 9-3 drives eccentric 9-2 and clamps displacement liquid connection tube 13 at synchronous two-tube pump 10 water inlet front ends, oppressing this connection tube can make the displacement liquid flow reduce, the waste liquid that returns then increases relatively, the weight that when balance claims weight on 8 to recover initial, detects, be that effusive displacement liquid reaches dynamic equilibrium with the waste liquid that returns, can realize the balance feed flow between displacement liquid and the waste liquid.In addition, moisture content unnecessary in the body is then external by ultrafiltrate pump 16 extractions, makes this equipment realize removing the effect of excessive moisture in the body.
Fig. 3 shows the concrete structure of the hemofiltration equipment of the fluid-balancing liquid-supplying device that uses another structure, as seen from Figure 3, this hemodialysis apparatus comprises blood circuit, balance feed flow loop, described blood circuit, balance feed flow loop is identical with embodiment 1 except that following characteristics: wherein the feed adjustment part is an electromagnetic valve pipe clamp structure regulating part 18, concrete structure as shown in Figure 4, comprise the movable piece 18-1 that inhales, spring 18-2, electric magnet 18-3, pressure tube plate 18-4, pressure pipe body 18-5, connecting axle 18-6, the control circuit (not shown), described electric magnet 18-3, pressure pipe body 18-5 fixedly installs, the described movable piece 18-1 that inhales is connected in connecting axle 18-6 one end that passes electric magnet, the other end of connecting axle 18-6 passes pressure pipe body 18-5 and fixedlys connected with the pressure tube plate 18-4 that lays respectively at pressure pipe body 18-5 both sides, spring housing is connected to connecting axle 18-6 and upward and in activity inhales between piece 18-1 and the electric magnet 18-3, displacement liquid connection tube 13 and waste liquid connection tube 14 pass the gap between pressure tube plate 18-4 and the pressure pipe body 18-5 respectively, described electric magnet 18-3 claims 8 to be connected by control circuit and balance, claim the power on/off of 8 feedback signals by balance by control circuit control electric magnet 18-3, can the control activity inhale moving of piece 18-1, thereby can control pressure tube plate 18-4 and pressure pipe body 18-5 pressure folder displacement liquid connection tube 13 or waste liquid connection tube 14; Described displacement liquid connection tube 13 is not to be connected with tremulous pulse kettle 3 in the blood circuit but to be connected among the vein kettle 5 after the filter.
The mechanism of this balance liquid feed device is substantially the same manner as Example 1, its difference is: the power on/off of control circuit control electric magnet 18-3, can control and clamp displacement liquid connection tube 13 or waste liquid connection tube 14, displacement liquid or waste liquid flow in the connection tube are reduced, thereby reach the purpose of balance displacement liquid and waste liquid.
Fig. 5 shows the concrete structure that this fluid-balancing liquid-supplying device is used in combination with haemodialysis control unit, its except that following characteristics with embodiment 1: this fluid-balancing liquid-supplying device and haemodialysis control unit dialysis fluid circuit are called for short water route 19, be connected, mainly be dialyser 4 with waste liquid connection tube 14 is inserted between water channel of hemodialysis machine is connected, waste liquid connection tube 14 is drawn back balance with waste liquid and is claimed 8, be connected in the water channel of hemodialysis machine of dialyser 4 and possess the ultrafiltrate pump (not shown), use described ultrafiltrate pump just can from blood circuit, carry out ultrafiltration, realize from human body, taking away the ultrafiltration function of excessive moisture.
Fig. 6 shows the concrete structure that the fluid-balancing liquid-supplying device that used another structure is used in combination with haemodialysis control unit, this fluid-balancing liquid-supplying device except that following characteristics with embodiment 3: displacement liquid connection tube 13 is connected with vein kettle 5; The feed adjustment part is an electromagnetic valve pipe clamp structure regulating part 18, and concrete structure is with embodiment 2.
Claims (6)
1, a kind of fluid-balancing liquid-supplying device, comprise that liquid conveying member, feed adjustment part, balance claim, the liquid conveying member is connected with displacement liquid that places balance to deserve to be called and waste liquid storaging piece by tube for transfusion, the feed adjustment part is connected with the liquid conveying member, it is characterized in that: described liquid conveying member is synchronous two-tube pump, two pipelines of synchronous two-tube pump are connected to displacement liquid transfer pipeline and waste liquid reclaim line, and described feed adjustment part is connected with displacement liquid transfer pipeline and waste liquid reclaim line simultaneously.
2, fluid-balancing liquid-supplying device according to claim 1, it is characterized in that: described feed adjustment part is an eccentric wheel structure, comprise shell, eccentric, motor, control circuit, described displacement liquid transfer pipeline and waste liquid reclaim line are passed through shell, described eccentric is in shell and be arranged between displacement liquid transfer pipeline and the waste liquid reclaim line, its maximum diameter can contact with displacement liquid transfer pipeline or waste liquid reclaim line, displacement liquid transfer pipeline or waste liquid reclaim line are pressed folder, described eccentric is connected with motor, and described motor claims to be connected by control circuit and balance.
3, fluid-balancing liquid-supplying device according to claim 1, it is characterized in that: described feed adjustment part is the electromagnetic valve pipe clamp structure, comprise electromagnetic valve, control circuit, described displacement liquid transfer pipeline and waste liquid reclaim line are passed electromagnetic valve respectively, and described electromagnetic valve claims to be connected by control circuit and balance.
4, according to claim 2 or 3 described fluid-balancing liquid-supplying devices, it is characterized in that: described feed adjustment part places the arrival end of two pipelines of synchronous two-tube pump.
5, fluid-balancing liquid-supplying device according to claim 1, it is characterized in that: described synchronous two-tube pump is made up of the pump case that is provided with two passes, roll extrusion rotor and drive motors, the roll extrusion rotor is positioned at pump case, distributes axisymmetricly and is connected with drive motors.
6, fluid-balancing liquid-supplying device according to claim 5 is characterized in that: the quantity of described roll extrusion rotor is 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520055490 CN2783995Y (en) | 2005-03-11 | 2005-03-11 | Balanced liquid supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520055490 CN2783995Y (en) | 2005-03-11 | 2005-03-11 | Balanced liquid supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2783995Y true CN2783995Y (en) | 2006-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520055490 Expired - Lifetime CN2783995Y (en) | 2005-03-11 | 2005-03-11 | Balanced liquid supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2783995Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100444906C (en) * | 2005-03-11 | 2008-12-24 | 暨南大学 | Fluid-balancing liquid-supplying device and its application |
| CN105536085A (en) * | 2016-01-28 | 2016-05-04 | 龚德华 | Continuous CRRT machine capacity balancing device |
| CN107583120A (en) * | 2017-09-20 | 2018-01-16 | 中南大学湘雅二医院 | A kind of plasma exchange dialysis adsorption system |
-
2005
- 2005-03-11 CN CN 200520055490 patent/CN2783995Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100444906C (en) * | 2005-03-11 | 2008-12-24 | 暨南大学 | Fluid-balancing liquid-supplying device and its application |
| CN105536085A (en) * | 2016-01-28 | 2016-05-04 | 龚德华 | Continuous CRRT machine capacity balancing device |
| CN107583120A (en) * | 2017-09-20 | 2018-01-16 | 中南大学湘雅二医院 | A kind of plasma exchange dialysis adsorption system |
| CN107583120B (en) * | 2017-09-20 | 2024-05-14 | 中南大学湘雅二医院 | Plasma exchange dialysis adsorption system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20081224 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |