CN216169149U - Automatic closed type circulating auxiliary pre-flushing device for dialyzer - Google Patents
Automatic closed type circulating auxiliary pre-flushing device for dialyzer Download PDFInfo
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- CN216169149U CN216169149U CN202122497994.0U CN202122497994U CN216169149U CN 216169149 U CN216169149 U CN 216169149U CN 202122497994 U CN202122497994 U CN 202122497994U CN 216169149 U CN216169149 U CN 216169149U
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Abstract
The utility model relates to an automatic closed type circulation auxiliary pre-flushing device for a dialyzer, which comprises the dialyzer, a vein end pipeline, an artery end pipeline, a waste liquid end pipeline, a non-contact liquid level sensor, a pinch valve and a signal processing module, wherein the dialyzer is provided with a venous end pipeline and a venous end pipeline; the input end of the vein end pipeline and the output end of the artery end pipeline are communicated with the dialyzer; the input end of the waste liquid end pipeline, the output end of the vein end pipeline and the input end of the artery end pipeline are communicated with each other; the non-contact liquid level sensor is connected with the vein end pipeline; the pinch valve is provided with a first channel and a second channel, and the arterial end pipeline and the waste liquid end pipeline respectively pass through the first channel and the second channel; the signal processing module is electrically connected with the non-contact liquid level sensor and the pinch valve. The automatic closed type circulation auxiliary pre-flushing device for the dialyzer is a device capable of performing automatic closed type circulation, and pre-flushing amount can be adjusted according to needs, so that pipelines can be automatically switched after the pre-flushing amount is reached.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to an automatic closed type circulation auxiliary priming device for a dialyzer.
Background
The dialyzer is a core component of the hemodialysis apparatus, and an important functional part of the dialyzer is a dialysis membrane. Hemodialysis is accomplished by hollow fiber dialysis membranes, exchange of the blood within the membrane with dialysate material outside the membrane. The quality of the pre-filling of the dialyzer directly affects the smooth proceeding of the dialysis process and the sufficiency and safety of the dialysis. Researches prove that the extracorporeal circulation system can be fully humidified by the pre-washing dialyzer and the pipeline in a closed circulation method, so that blood coagulation of the dialyzer and the pipeline is effectively avoided, the effective area of a dialysis membrane is prevented from being reduced, and the dialysis sufficiency is improved.
In the pre-flush operation of Hemodialysis (HD), Hemofiltration (HF) and Hemodiafiltration (HDF) mentioned in the specification of blood purification operation (SOP)2020, closed circulation can be performed on a dialyzer and a pipeline as required, and the closed circulation can promote lubrication and expansion of a dialysis membrane, so that dialysis is more sufficient, and meanwhile, the closed circulation is one of the content of the current and future standard pre-flush operation of dialysis, but in actual operation, complete closed circulation requires a nurse on a computer to follow up the operation for at least 8 minutes in time, and time and labor are very consumed. Closed circulation is insufficient due to various problems, and in the existing brand machine, the Belamcanda Dialog + hemodialysis machine can prompt closed circulation ultrafiltration in time, but a closed pipeline still needs to be opened and closed by manual operation. In actual work, the number of the on-board nurses and patients is often lower than the ratio (1: 5) specified in the SOP, and the shortage of hands is a normal state of many hospitals, so that the phenomenon that pre-flushing liquid is used up (a large amount of air enters a pipeline due to forgetting to close a clamp) or the phenomenon that the pressure of an original sealing cover of a dialyzer bypass is too high and popped occurs frequently, the working efficiency is seriously reduced, the treatment risk is increased, and a device capable of performing automatic closed circulation is urgently needed.
SUMMERY OF THE UTILITY MODEL
Based on the above, the utility model aims to overcome the defects and shortcomings in the prior art and provide an automatic closed circulation auxiliary priming device for a dialyzer.
An automatic closed type circulation auxiliary pre-flushing device of a dialyzer comprises the dialyzer, a vein end pipeline, an artery end pipeline, a waste liquid end pipeline, a non-contact liquid level sensor, a pinch valve and a signal processing module;
the input end of the vein end pipeline and the output end of the artery end pipeline are communicated with the dialyzer; the input end of the waste liquid end pipeline, the output end of the vein end pipeline and the input end of the artery end pipeline are communicated with each other;
the non-contact liquid level sensor is connected with the vein end pipeline;
the pinch valve is provided with a first channel and a second channel, and the arterial end pipeline and the waste liquid end pipeline respectively pass through the first channel and the second channel;
the signal processing module is electrically connected with the non-contact liquid level sensor and the pinch valve.
Further, the non-contact liquid level sensor is a capacitance type liquid level sensor.
Further, the pinch valve is a double-channel electromagnetic pinch valve.
Furthermore, the signal processing module comprises a switch delay module and a single chip microcomputer; the switch delay module is electrically connected with the single chip microcomputer; the switch delay module is electrically connected with the non-contact liquid level sensor and the pinch valve.
Further, the singlechip is an 89C51 singlechip.
Further, still include the buffering bag, the buffering bag with the output of waste liquid end pipeline is connected.
Further, the device also comprises a closed anti-backflow liquid discharge connector; and two sides of the closed anti-backflow liquid discharge connector are connected with the buffer bag and the waste liquid end pipeline.
Further, the device also comprises a venous kettle, an arterial kettle, a blood pump and a pre-flush infusion device; the output end of the arterial pot and the input end of the venous pot are connected with the dialyzer; the output end of the venous pot is connected with the input end of the venous end pipeline; the input end of the arterial pot is connected with the output end of the blood pump; the input end of the blood pump is connected with the output end of the pre-flushing infusion apparatus and the output end of the arterial end pipeline.
The automatic closed type circulation auxiliary priming device for the dialyzer disclosed by the utility model is characterized in that each pipeline and the dialyzer are connected according to a closed type circulation priming method to form closed circulation; by adopting a non-contact liquid level sensor, the principle is that the water level change of a vein end pipeline is detected in a capacitance mode; the signal processing module is used for programming by using an 89C51 singlechip, when the non-contact liquid level sensor detects that the pipeline at the venous end is air, a signal is transmitted to the switch delay module, the pinch valve keeps CL time disconnection, and when the pinch valve is disconnected, the pinch valve closes the pipeline at the arterial end and opens the pipeline at the waste liquid end;
triggering the pinch valve to conduct after CL time is over, and when the pinch valve is conducted, opening the artery end pipeline and closing the waste liquid end pipeline by the pinch valve; if the venous end detects bubbles (the signal disappears), the pinch valve is switched off (bubble discharge) for OP time, the pinch valve is triggered to be switched on after the OP time is over, and if the signal triggers the non-contact liquid level sensor in the OP time, namely the venous end pipeline is detected to be air, the switch delay module counts time again, and the pinch valve is switched off again.
The utility model can timely exhaust and effectively close the infusion end of the pre-flushing liquid, thereby realizing the automatic closed membrane pre-flushing of the pipeline and avoiding the condition that a large amount of air enters the pipeline because the pre-flushing liquid is used up and the clamp is forgotten to be closed.
The automatic closed type circulation auxiliary pre-flushing device for the dialyzer is a device capable of performing automatic closed type circulation, pre-flushing amount can be adjusted according to needs, a pipeline (a closed circulation pipe) is automatically switched after the pre-flushing amount is reached, and a pinch valve can be automatically disconnected and air is discharged from a waste liquid end pipeline if a non-contact liquid level sensor detects that the venous end pipeline has air in a circulation pipe process, so that the automatic closed type circulation pipe is realized; the utility model has high efficiency and low error rate, can automatically exhaust air, and can freely adjust the pre-impulse quantity by a user, thereby facilitating the assembly and disassembly of pipelines by medical staff.
For a better understanding and practice, the utility model is described in detail below with reference to the accompanying drawings.
Drawings
Fig. 1 is a working principle diagram of an automatic closed circulation auxiliary priming device of a dialyzer of the present invention;
fig. 2 is a schematic circuit connection diagram of the automatic closed-cycle auxiliary priming device of the dialyzer of the present invention.
In the figure: 10. a venous-end conduit; 20. an arterial end conduit; 30. a waste liquid end pipe; 40. a non-contact liquid level sensor; 50. a pinch valve; 51. a first channel; 52. a second channel; 60. a switch delay module; 71. a venous pot; 72. the arteria cruris; 73. a blood pump; 74. a pre-infusion set; 75. a buffer bag; 80. a dialyzer.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It will be understood that in the description of the present application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application. The terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, i.e. a feature defined as "first", "second" may explicitly or implicitly include one or more of such features. Further, unless otherwise specified, "a plurality" means two or more.
It should be noted that, in the description of the present application, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "hollow" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1 and fig. 2, the automatic closed-type circulation auxiliary priming device of the dialyzer of the present embodiment includes a dialyzer 80, a vein-end pipeline 10, an artery-end pipeline 20, a waste-liquid-end pipeline 30, a non-contact liquid level sensor 40, a pinch valve 50, and a signal processing module;
specifically, a venous end pipeline 10, an arterial end pipeline 20 and a waste liquid end pipeline 30, wherein the input end of the venous end pipeline 10 and the output end of the arterial end pipeline 20 are communicated with the dialyzer 80; the input end of the waste liquid end pipeline 30, the output end of the venous end pipeline 10 and the input end of the arterial end pipeline 20 are communicated with each other;
more specifically, the device also comprises a venous pot 71, an arterial pot 72, a blood pump 73 and a pre-flush infusion apparatus 74; the output end of the arterial pot 72 and the input end of the venous pot 71 are connected with the dialyzer 80; the output end of the venous pot 71 is connected with the input end of the venous-end pipeline 10; the input end of the arterial pot 72 is connected with the output end of the blood pump 73; the input end of the blood pump 73 is connected with the output end of the pre-flush infusion apparatus 74 and the output end of the arterial end pipeline 20;
specifically, the non-contact liquid level sensor 40 is connected to the venous-end pipe 10; preferably, the contactless level sensor 40 is a capacitive level sensor, the venous end pipe 10 passing through the sensing position of the capacitive level sensor;
specifically, the pinch valve 50 is provided with a first channel 51 and a second channel 52, and the arterial end pipeline 20 and the waste liquid end pipeline 30 respectively pass through the first channel 51 and the second channel 52; preferably, the pinch valve 50 is a dual-channel electromagnetic pinch valve 50;
specifically, the signal processing module is electrically connected with the non-contact liquid level sensor 40 and the pinch valve 50; preferably, the signal processing module includes a switch delay module 60 and a single chip (not shown); the switch delay module 60 is electrically connected with the single chip microcomputer; the switch delay module 60 is electrically connected to the non-contact level sensor 40 and the pinch valve 50.
In a preferred embodiment, the single chip microcomputer is an 89C51 single chip microcomputer.
In the preferred embodiment, the device further comprises a buffer bag 75, and the buffer bag 75 is connected with the output end of the waste liquid end pipe 30.
In the preferred embodiment, a sealed anti-backflow drainage connector (not shown) is further included; the two sides of the closed anti-backflow liquid discharge connector are connected with the buffer bag 75 and the waste liquid end pipeline 30.
The working process of the embodiment:
connecting the pipes and the dialyzer 80 according to a closed circulation priming method to form a closed circulation; by adopting the non-contact liquid level sensor 40, the principle is that the water level change of the vein end pipeline 10 is detected in a capacitance mode; through the signal processing module, a 89C51 singlechip is used for programming, when the non-contact liquid level sensor 40 detects that the venous end pipeline 10 is air, a signal is transmitted to the switch delay module 60, the pinch valve 50 keeps CL time disconnection, and when the pinch valve 50 is disconnected, the pinch valve 50 enables the arterial end pipeline 20 to be closed and the waste liquid end pipeline 30 to be opened;
triggering the pinch valve 50 to be conducted after the CL time is over, and when the pinch valve 50 is conducted, opening the artery end pipeline 20 and closing the waste liquid end pipeline 30 by the pinch valve 50; if the venous end detects that bubbles exist (the signal disappears), the pinch valve 50 is switched off (bubble is discharged) for OP time, the pinch valve 50 is triggered to be switched on after the OP time is over, and if the signal triggers the non-contact liquid level sensor 40 in the OP time, namely the venous end pipeline 10 is detected to be air, the switch delay module 60 counts again, and the pinch valve 50 is switched off again.
Compared with the prior art, the automatic pre-flushing device can timely exhaust air and effectively close the infusion end of the pre-flushing liquid, so that automatic closed type membrane pre-flushing of the pipeline is realized, and the condition that a large amount of air enters the pipeline due to the fact that the clamp is forgotten to close after the pre-flushing liquid is used up is avoided;
the automatic closed type circulation auxiliary pre-flushing device for the dialyzer is a device capable of performing automatic closed type circulation, pre-flushing amount can be adjusted according to needs, a pipeline (a closed circulation pipe) is automatically switched after the pre-flushing amount is reached, and a pinch valve can be automatically disconnected and air is discharged from a waste liquid end pipeline if a non-contact liquid level sensor detects that the venous end pipeline has air in a circulation pipe process, so that the automatic closed type circulation pipe is realized; the utility model has high efficiency and low error rate, can automatically exhaust air, and can freely adjust the pre-impulse quantity by a user, thereby facilitating the assembly and disassembly of pipelines by medical staff.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (8)
1. The utility model provides a supplementary preflushing device of cerini dialyser cerini automatic closed circulation which characterized in that includes:
a dialyzer;
the dialyzer comprises a venous end pipeline, an arterial end pipeline and a waste liquid end pipeline, wherein the input end of the venous end pipeline and the output end of the arterial end pipeline are communicated with the dialyzer; the input end of the waste liquid end pipeline, the output end of the vein end pipeline and the input end of the artery end pipeline are communicated with each other;
a non-contact level sensor connected to the venous-end conduit;
the pipe clamping valve is provided with a first channel and a second channel, and the arterial end pipeline and the waste liquid end pipeline respectively pass through the first channel and the second channel;
and the signal processing module is electrically connected with the non-contact liquid level sensor and the pinch valve.
2. The dialyzer automatic closed cycle auxiliary priming device of claim 1, wherein the non-contact liquid level sensor is a capacitive liquid level sensor.
3. The dialyzer automatic closed cycle auxiliary priming device of claim 2, wherein the pinch valve is a two-way solenoid pinch valve.
4. The dialyzer automatic closed circulation auxiliary priming device of claim 3, wherein the signal processing module comprises a switch delay module and a single chip microcomputer; the switch delay module is electrically connected with the single chip microcomputer; the switch delay module is electrically connected with the non-contact liquid level sensor and the pinch valve.
5. The dialyzer automatic closed circulation auxiliary priming device of claim 4, wherein the single chip microcomputer is an 89C51 single chip microcomputer.
6. The dialyzer automatic closed cycle auxiliary priming device of claim 1, further comprising a buffer bag connected to an output end of the waste fluid end conduit.
7. The dialyzer automatic closed cycle auxiliary priming device of claim 6, further comprising a closed anti-reflux drain connector; and two sides of the closed anti-backflow liquid discharge connector are connected with the buffer bag and the waste liquid end pipeline.
8. The dialyzer automatic closed circulation auxiliary preflush device of claim 1, further comprising a venous pot, an arterial pot, a blood pump, a preflush infusion set; the output end of the arterial pot and the input end of the venous pot are connected with the dialyzer; the output end of the venous pot is connected with the input end of the venous end pipeline; the input end of the arterial pot is connected with the output end of the blood pump; the input end of the blood pump is connected with the output end of the pre-flushing infusion apparatus and the output end of the arterial end pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122497994.0U CN216169149U (en) | 2021-10-15 | 2021-10-15 | Automatic closed type circulating auxiliary pre-flushing device for dialyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122497994.0U CN216169149U (en) | 2021-10-15 | 2021-10-15 | Automatic closed type circulating auxiliary pre-flushing device for dialyzer |
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| Publication Number | Publication Date |
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| CN216169149U true CN216169149U (en) | 2022-04-05 |
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| CN202122497994.0U Active CN216169149U (en) | 2021-10-15 | 2021-10-15 | Automatic closed type circulating auxiliary pre-flushing device for dialyzer |
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- 2021-10-15 CN CN202122497994.0U patent/CN216169149U/en active Active
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