CN111001063B - Exhaust system of variable-speed infusion pump and application - Google Patents
Exhaust system of variable-speed infusion pump and application Download PDFInfo
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- CN111001063B CN111001063B CN201911103285.0A CN201911103285A CN111001063B CN 111001063 B CN111001063 B CN 111001063B CN 201911103285 A CN201911103285 A CN 201911103285A CN 111001063 B CN111001063 B CN 111001063B
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- 238000001802 infusion Methods 0.000 title claims abstract description 102
- 239000007788 liquid Substances 0.000 claims abstract description 164
- 239000003814 drug Substances 0.000 claims abstract description 70
- 238000003860 storage Methods 0.000 claims abstract description 20
- 239000012530 fluid Substances 0.000 claims abstract description 10
- 230000001105 regulatory effect Effects 0.000 claims description 33
- 230000000694 effects Effects 0.000 claims description 8
- 229940079593 drug Drugs 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000009826 distribution Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 241000219194 Arabidopsis Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000002512 chemotherapy Methods 0.000 description 1
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- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 229920000573 polyethylene Polymers 0.000 description 1
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- 238000001356 surgical procedure Methods 0.000 description 1
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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/36—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests with means for eliminating or preventing injection or infusion of air into body
-
- 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
Abstract
The invention discloses an exhaust system of a variable-speed infusion pump and application thereof, and relates to the technical field of medical appliances. The exhaust system of the variable-speed infusion pump comprises a four-way pipe, wherein a first pipeline of the four-way pipe is connected with an infusion pipe, a second pipeline of the four-way pipe is connected with a reserved flow pipe, a third pipeline of the four-way pipe is connected with a second connecting pipe, the infusion pipe is connected with a liquid inlet through an additional liquid storage bag, the reserved flow pipe is communicated with the liquid inlet, the second connecting pipe is communicated with the liquid outlet, and the liquid outlet is used for guiding air and preventing liquid from passing through; the hose is arranged at the joint of the first pipeline and the fourth pipeline and the joint of the second pipeline and the third pipeline, and is used as a fluid stop body to prevent gas from entering the second pipeline and the third pipeline in an initial state, and deformation is generated when the hose is subjected to preset pressure, so that the first pipeline is communicated with the third pipeline, and the liquid medicine in the infusion pipe enters the second connecting pipe. The invention has compact structure, clear and simple pipeline distribution, is convenient for processing and manufacturing and saves the production cost.
Description
Technical Field
The invention relates to the technical field of medical appliances.
Background
Infusion pumps are widely used as devices for delivering liquids and gases for the administration of small amounts of drugs continuously or intermittently, such as for pain relief after surgery and chemotherapy. The infusion pump is not thorough in exhaust in the use process, and if bubbles are infused into a human body, certain damage is caused to a patient, so that the bubbles in the medicine are required to be exhausted during infusion.
In clinical care, the infusion pump is used for the first time, the infusion tube (or infusion tube) is filled with air, and the air in the infusion tube must be completely discharged to start infusion. The traditional infusion pump can only discharge air through the infusion needle, once the infusion needle is pricked into a patient, the air in the infusion tube cannot be discharged any more, and unless the infusion needle is pulled out, the air is discharged and then the infusion is re-pricked, so that the huge objection and the conflict psychology of the patient are caused, and the workload of medical staff and the infusion safety risk are increased.
On the other hand, the flow controller of the existing infusion pump is complex in structure, the internal connecting pipes are crisscrossed vertically and horizontally, the number of the interfaces is numerous, the volume of the flow controller is large, and meanwhile, the difficulty in processing and manufacturing is increased due to complex pipeline distribution.
Disclosure of Invention
The invention aims at: overcomes the defects of the prior art and provides an exhaust system of a variable speed infusion pump and application thereof. According to the infusion pump provided by the invention, the exhaust system is arranged in the flow controller, so that automatic exhaust can be realized; furthermore, the pipeline is arranged on the front surface and the back surface in the flow controller, so that the structure is compact, the pipeline distribution is clear and simple, the processing and the manufacturing are convenient, and the production cost is saved.
In order to achieve the above object, the present invention provides the following technical solutions:
an exhaust system of a variable speed infusion pump is arranged in a flow controller of the infusion pump, the exhaust system comprises a four-way pipe, a first pipeline of the four-way pipe is connected with an infusion pipe, a second pipeline of the four-way pipe is connected with a reserved flow pipe, a third pipeline of the four-way pipe is connected with a second connecting pipe, a fourth pipeline of the four-way pipe is connected with an exhaust plug,
the infusion tube is connected with the liquid inlet through an additional liquid storage bag, the reserved flow tube is communicated with the liquid inlet, the second connecting tube is communicated with the liquid outlet, and the vent plug is used for guiding air and preventing liquid from passing through;
the hose is arranged at the joint of the first pipeline and the fourth pipeline and the joint of the second pipeline and the third pipeline, and is used as a fluid stop body to prevent gas from entering the second pipeline and the third pipeline in an initial state, and deformation is generated when the hose is subjected to preset pressure, so that the first pipeline is communicated with the third pipeline, and the liquid medicine in the infusion pipe enters the second connecting pipe.
Further, the first pipeline is perpendicular to the fourth pipeline, the second pipeline, the third pipeline and the fourth pipeline are arranged in parallel, the second pipeline and the third pipeline are arranged in a straight-through mode, and the third pipeline and the fourth pipeline are located on the same side.
Further, the hose is a silica gel pipe, the silica gel pipe is positioned between the second pipeline and the third pipeline and is communicated with the second pipeline and the third pipeline, and the length of the silica gel pipe is larger than that of an outlet at the junction of the first pipeline and the fourth pipeline.
Further, the vent plug is filled with a filter medium capable of allowing liquid to pass therethrough and preventing liquid from passing therethrough.
The invention also provides a flow controller of the infusion pump, which comprises a regulating valve and a shell, wherein the regulating valve is arranged in the shell and can rotate relative to the shell to regulate the flow of liquid medicine, a liquid inlet and a liquid outlet are arranged on the shell, and the exhaust system is arranged in the shell.
The device further comprises a pipeline arrangement plate arranged in the shell, wherein the middle part of the pipeline arrangement plate is provided with a regulating valve, and the front surface of the pipeline arrangement plate is provided with a liquid medicine adding module which comprises the additional liquid storage bag, an exhaust system, an infusion pipe, a reserved flow pipe, a second connecting pipe and a vent plug; the back surface of the pipeline arrangement plate is provided with a liquid medicine speed regulation module which comprises a liquid inlet, a liquid outlet, a first connecting pipe and one or more flow regulation pipes, wherein the first connecting pipe is used for communicating the liquid inlet with the regulating valve, and the flow regulation pipes are used for communicating the regulating valve with the liquid outlet.
Further, the liquid inlet comprises a four-way pipe, the first pipeline is communicated with a liquid inlet pipeline, the second pipeline is communicated with an infusion pipe, the third pipeline is communicated with a first connecting pipe, and the fourth pipeline is connected with a reserved flow pipe; the liquid outlet comprises a four-way pipe, the first pipeline is communicated with a liquid outlet pipeline, the second pipeline and the third pipeline are respectively connected with a flow regulating pipe, and the fourth pipeline is communicated with a second connecting pipe.
The invention also provides a variable speed infusion pump, which comprises a liquid storage part and a flow controller which are communicated through a connecting pipeline, wherein the flow controller is the flow controller.
Further, the liquid outlet is provided with a liquid outlet connector, and the connecting pipeline is provided with a medicine adding port for adding medicines.
The invention also provides an infusion method of the variable speed infusion pump, which comprises the following steps: filling the liquid medicine into the infusion pump, and communicating air in the additional liquid storage bag with a four-way pipe of the exhaust system through a communicated infusion pipe, wherein the air enters the exhaust plug due to the flow stopping effect of the hose and is exhausted through the exhaust plug; when the liquid medicine is needed to be added, the additional liquid storage bag is pressed to enable the liquid medicine to enter the four-way pipe, the hose deforms under the pressure of the liquid medicine to enable the first pipeline to be communicated with the third pipeline, and the liquid medicine in the infusion pipe enters the liquid outlet through the second connecting pipe.
Compared with the prior art, the invention has the following advantages and positive effects by taking the technical scheme as an example: according to the infusion pump provided by the invention, the exhaust system is arranged in the flow controller, so that automatic exhaust can be realized; furthermore, the pipeline is arranged on the front surface and the back surface in the flow controller, so that the structure is compact, the pipeline distribution is clear and simple, the processing and the manufacturing are convenient, and the production cost is saved.
Drawings
Fig. 1 is a schematic diagram of a front structure of a flow controller of a variable speed infusion pump according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an exhaust system according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a four-way pipe for exhaust according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a four-way pipe for infusion according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of the reverse structure of a flow controller for a variable speed infusion pump according to an embodiment of the present invention.
Fig. 6 is a schematic perspective view of a flow rate regulator according to an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of an infusion pump according to an embodiment of the present invention.
Reference numerals illustrate:
the device comprises a flow controller 1, a liquid inlet pipeline 2, a liquid outlet pipeline 3, a liquid storage part 4, a dosing port 5 and a liquid outlet joint 6;
adding a liquid storage bag 10 and a valve core 11 of a regulating valve;
an exhaust system 20, a first pipeline 21, a second pipeline 22, a third pipeline 23, a fourth pipeline 24 and a hose 25;
a housing 100, an upper cover 100a, and a lower cover 100b;
infusion lines 110, 150, reserved flow line 120, second connection line 130, vent plug 140;
a liquid inlet 210, a liquid outlet 220, a first connecting pipe 230, and flow regulating pipes 240 and 250.
Detailed Description
The exhaust system and application of the variable speed infusion pump disclosed herein will be described in further detail with reference to the accompanying drawings and specific examples. It should be noted that the technical features or combinations of technical features described in the following embodiments should not be regarded as being isolated, and they may be combined with each other to achieve a better technical effect. In the drawings of the embodiments described below, like reference numerals appearing in the various drawings represent like features or components and are applicable to the various embodiments. Thus, once an item is defined in one drawing, no further discussion thereof is required in subsequent drawings.
It should be noted that the structures, proportions, sizes, etc. shown in the drawings are merely used in conjunction with the disclosure of the present specification, and are not intended to limit the applicable scope of the present invention, but rather to limit the scope of the present invention. The scope of the preferred embodiments of the present invention includes additional implementations in which functions may be performed out of the order described or discussed, including in a substantially simultaneous manner or in an order that is reverse, depending on the function involved, as would be understood by those of skill in the art to which embodiments of the present invention pertain.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values.
Examples
Referring to fig. 1, a flow controller of a variable speed infusion pump according to an embodiment of the present invention is provided, in which an exhaust system is provided.
The flow controller 1 comprises a regulating valve and a housing, wherein the regulating valve is arranged inside the housing and can rotate relative to the housing to regulate the flow of the liquid medicine.
The shell is used for forming a cavity for accommodating the controller pipeline, and a liquid inlet and a liquid outlet are formed in the shell. The inside pipeline arrangement board that is provided with of cavity divides into cavity and lower cavity, pipeline arrangement board middle part can be provided with the installation governing valve, can pass through this through-hole intercommunication cavity and lower cavity.
The upper cavity corresponds to the front surface of the pipeline arrangement plate and is used for arranging a liquid medicine adding module.
In particular, the front arrangement of the piping arrangement plate is shown with reference to fig. 1. Disposed on the front face are supplemental reservoir 10, vent system 20, infusion tubes 110 and 150, reserved flow tube 120, second connecting tube 130, and vent plug 140.
The additional reservoir 10 stores a drug solution.
The reserved flow tube 120 is used for improving the infusion operation of the basic flow, and can also be called a basic flow infusion tube. By way of example and not limitation, the set infusion flow value for the reserved flow tube 120 may be 2ml/h, for example. Of course, the infusion flow value may be set to any flow value as desired, such as 0, 2, 4ml/h, etc.
The reserved flow tube 120, along with the regulator valve, provides the infusion flow. By way of example and not limitation, such as when infusing a medication, the regulator valve is set at an infusion flow rate of 2ml/h, where the overall flow controller infusion flow value is 2ml/h for the base infusion flow rate of the reserved flow tube 120 and 2ml/h, i.e., 4ml/h, for the regulator valve. For another example, the regulator valve is set at an infusion flow rate of 4ml/h, where the overall flow controller has an infusion flow rate value of 2ml/h for the base infusion flow rate of the reserved flow tube 120 and 4ml/h, i.e., 6ml/h, for the infusion flow rate provided by the regulator valve.
Referring to fig. 2 and 3, the exhaust system 20 includes a four-way pipe, a first pipe 21 of the four-way pipe is connected to the infusion pipe 110, a second pipe 22 of the four-way pipe is connected to the reserved flow pipe 120, a third pipe 23 of the four-way pipe is connected to the second connecting pipe 130, and a fourth pipe 24 of the four-way pipe is connected to the exhaust plug 140.
The infusion tube 110 is connected to the inlet through the additional reservoir 10 of the flow controller, specifically, the additional reservoir 10 may be connected to the inlet through the infusion tube 150, that is, the entire infusion tube is divided into two sections, i.e., a first section of the infusion tube 150 and a second section of the infusion tube 110, by the additional reservoir 10, and the additional reservoir 10 is disposed in the middle of the entire infusion tube.
The reserved flow pipe 120 is communicated with the liquid inlet 210, and medicine can directly enter the reserved flow pipe 120 from the liquid inlet during medicine injection.
The second connecting pipe 130 is communicated with the liquid outlet and is used for inputting the liquid medicine in the four-way pipe into the liquid outlet.
The vent plug 140 serves to conduct air and prevent liquid from passing through.
A hose 25 is arranged at the junction of the first pipeline 21 and the fourth pipeline 24 and the junction of the second pipeline 22 and the third pipeline 23, and the hose 25 can serve as a fluid stop body to prevent gas from entering the second pipeline 22 and the third pipeline 23 in an initial state; when the hose 25 is subjected to a predetermined pressure, it is deformed to allow the first line 21 to communicate with the third line 23, so that the liquid medicine in the infusion tube 110 enters the second connection tube 130.
As an example of a typical operation, the steps of exhausting using the above exhaust system are as follows:
1. exhausting step
The liquid medicine is filled into the infusion pump through the medicine filling port, and meanwhile, the air in the additional liquid storage bag is communicated with the four-way pipe of the exhaust system through the communicated infusion pipe, and the air in the pipeline enters the exhaust plug and is discharged through the exhaust plug due to the flow stopping effect of the hose.
And the reserved connecting pipe and the air in the regulating valve core are directly discharged.
2. Use steps
The flow rate of the infusion pump is controlled by adjusting the flow regulating valve as needed.
When the liquid medicine is needed to be added, the additional liquid storage bag is pressed, and as the liquid medicine enters the four-way pipe, the hose deforms under the pressure of the liquid medicine to enable the first pipeline to be communicated with the third pipeline, and the liquid medicine in the infusion pipe enters the liquid outlet through the second connecting pipe.
In the above technical solution, the hose 25 forms a one-way valve in the four-way pipe, and in the initial state, the hose 25 is used as a fluid stop to block the outlet position at the junction of the first pipeline 21 and the fourth pipeline 24, so that the fluid in the first pipeline 21 and the fourth pipeline 24 can be prevented from entering the second pipeline 22 and the third pipeline 23. When the liquid medicine is filled into the infusion pump through the liquid inlet, the air in the additional reservoir 10 is communicated with the four-way pipe of the exhaust system through the communicated infusion pipe 110, and the air in the pipeline enters the exhaust plug 140 and is discharged through the exhaust plug 140 due to the flow stopping effect of the hose 25, so that the liquid medicine is blocked, as shown in fig. 3.
And the reserved connection pipe 120 and the air in the valve core of the regulating valve are directly discharged.
When the additional liquid medicine is needed, the additional reservoir 10 is pressed, the hose 25 deforms under the pressure of the liquid medicine as the liquid medicine enters the four-way pipe, so that the first pipeline 21 is communicated with the third pipeline 23, and the liquid medicine in the infusion tube 110 enters the liquid outlet 220 through the second connecting pipe 130. Thus, the automatic air discharge is realized when the liquid medicine is added.
In this embodiment, as shown in fig. 4, preferably, the first pipeline 21 is disposed perpendicular to the fourth pipeline 24, the second pipeline 22, the third pipeline 23 and the fourth pipeline 24 are disposed in parallel, the second pipeline 22 and the third pipeline 23 are disposed directly, and the third pipeline 23 and the fourth pipeline 24 are located on the same side.
The hose 25 is preferably a silicone tube. The silicone tube is positioned between the second pipeline 22 and the third pipeline 23 and is communicated with the second pipeline 22 and the third pipeline 23, and the length of the silicone tube is longer than that of an outlet at the junction of the first pipeline and the fourth pipeline, so that the fluid plugging effect at the outlet at the junction of the first pipeline 21 and the fourth pipeline 24 can be realized.
In this embodiment, the vent plug 140 is filled with a filter medium capable of allowing and preventing the passage of liquid, such as PE powder (polyethylene powder).
The lower cavity corresponds to the reverse side of the pipeline arrangement plate and is used for arranging a liquid medicine speed regulation module.
In particular, the reverse arrangement of the piping arrangement plate is shown with reference to fig. 5. On the opposite side of the piping plate, a liquid inlet 210, a liquid outlet 220, a first connection pipe 230 and one or more flow regulating pipes 240, 250 are arranged.
The first connection pipe 230 is used for communicating the liquid inlet 210 with the valve core 11 of the regulating valve, and the liquid medicine in the liquid inlet 210 enters the valve core of the regulating valve through the first connection pipe 230.
The flow regulating pipes 240 and 250 are used for communicating the valve core 11 of the regulating valve with the liquid outlet 220, and different flow regulating pipes can correspond to different flow rates.
By way of example and not limitation, referring to fig. 5, for example, the regulator valve cartridge 11 may include 4 flow rate steps-the on flow values are 2ml/h, 4ml/h, 6ml/h, and 8ml/h, respectively, with the four flow rate steps corresponding to the 4 ports, and the user may adjust the flow rate of the liquid medicine by rotating the regulator valve to adjust the ports of the cartridge that are in communication with the first connection tube 230 and the flow regulator tubes 240 and 250.
In this embodiment, the liquid inlet 210 preferably includes a four-way pipe, the first pipe is connected to the liquid inlet pipe, the second pipe is connected to the infusion pipe 150, the third pipe is connected to the first connecting pipe 230, and the fourth pipe is connected to the reserved flow pipe 120.
The liquid outlet 220 also includes a four-way pipe, the first pipeline is connected to the liquid outlet pipeline, the second pipeline and the third pipeline are respectively connected to the flow adjusting pipes 240 and 250, and the fourth pipeline is connected to the second connecting pipe 130.
A typical structure of the housing 100 of the flow controller 1 is shown with reference to fig. 6. The housing 100 includes an upper cover 100a and a lower cover 100b, the upper cover 100a and the lower cover 100b form a cavity for accommodating a controller pipeline, a pipeline arrangement plate is arranged in the cavity to divide the cavity into an upper cavity and a lower cavity, and a through hole for installing a regulating valve can be arranged in the middle of the pipeline arrangement plate and is communicated with the upper cavity and the lower cavity. The upper cover 100a is further provided with a rotating portion to operate a valve body of the regulating valve.
As required, a flow indication mark may be further provided on the upper cover 100a corresponding to the rotating portion. The flow indication mark corresponds to the conduction flow of the flow guide pipe, so that an operator can conveniently adjust the rotation angle to select the corresponding flow. By way of example and not limitation, scale values such as Arabidopsis numerals 2, 4, 6 and 8 are set on the surface of the housing to represent corresponding flow values, or by class values such as class I, class II, class III, class IV to represent corresponding flow magnitudes, depending on the flow values of the draft tube 2ml/h, 4ml/h, 6ml/h and 8 ml/h.
In another embodiment of the present invention, a variable speed infusion pump is also provided.
Referring to fig. 7, the variable speed infusion pump includes a reservoir 4 and a flow controller 1 which are communicated through a connecting line.
The input end of the flow controller 1 is provided with a liquid inlet, and the output end is provided with a liquid outlet. The outlet may be provided with a tapping fitting 6 as required.
The connecting pipeline comprises a liquid inlet pipeline 2 and a liquid outlet pipeline 3, and a medicine adding port can be arranged on the liquid inlet pipeline 2 so that an operator can add medicines according to the needs.
The reservoir 4 may specifically include a pump housing and a silicone reservoir mounted within a cavity formed by the pump housing. Of course, the reservoir may be made of other materials as desired, and should not be taken as a limitation on the reservoir structure of the present invention.
The flow controller 1 comprises a regulating valve and a housing, wherein the regulating valve is arranged inside the housing and can rotate relative to the housing to regulate the flow of the liquid medicine.
The shell is used for forming a cavity for accommodating the controller pipeline, and a liquid inlet and a liquid outlet are formed in the shell. The cavity is internally provided with a pipeline arrangement plate to divide the cavity into an upper cavity and a lower cavity.
The upper cavity corresponds to the front surface of the pipeline arrangement plate and is used for arranging a liquid medicine adding module.
Specifically, the front of the pipeline arrangement plate is provided with an additional liquid storage bag, an exhaust system, an infusion tube and a reserved flow tube, a second connecting tube and an exhaust plug.
The exhaust system comprises a four-way pipe, a first pipeline of the four-way pipe is connected with an infusion pipe, a second pipeline of the four-way pipe is connected with a reserved flow pipe, a third pipeline of the four-way pipe is connected with a second connecting pipe, and a fourth pipeline of the four-way pipe is connected with an exhaust plug.
The infusion tube is connected with the liquid inlet through an additional liquid storage bag.
The reserved flow pipe is communicated with the liquid inlet, and when the medicine is injected, the medicine can directly enter the reserved flow pipe from the liquid inlet.
The second connecting pipe is communicated with the liquid outlet and is used for inputting the liquid medicine in the four-way pipe into the liquid outlet.
The vent plug is used to channel air and prevent liquid from passing through.
A hose is arranged at the junction of the first pipeline and the fourth pipeline and the junction of the second pipeline and the third pipeline, and can be used as a fluid stop body to prevent gas from entering the second pipeline and the third pipeline in an initial state; when the hose is subjected to preset pressure, the hose can deform to enable the first pipeline to be communicated with the third pipeline, so that the liquid medicine in the infusion tube enters the second connecting tube.
In the technical scheme, the hose forms the one-way valve in the four-way pipe, and in the initial state, the hose is used as a fluid stop to block the outlet position at the junction of the first pipeline and the fourth pipeline, so that the fluid in the first pipeline and the fourth pipeline can be prevented from entering the second pipeline and the third pipeline. When the liquid medicine is filled into the infusion pump through the liquid inlet, the air in the additional liquid storage bag is communicated with the four-way pipe of the exhaust system through the communicated infusion pipe, and the air in the pipeline enters the exhaust plug and is discharged through the exhaust plug due to the flow stopping effect of the hose, so that the liquid medicine is blocked.
And the reserved connecting pipe and the air in the valve core of the regulating valve are directly discharged.
When the liquid medicine is needed to be added, the additional liquid storage bag is pressed, the liquid medicine enters the four-way pipe along with the liquid medicine, the hose deforms under the pressure of the liquid medicine, so that the first pipeline is communicated with the third pipeline, and the liquid medicine in the infusion pipe enters the liquid outlet through the second connecting pipe. Thus, the automatic air discharge is realized when the liquid medicine is added.
The lower cavity corresponds to the reverse side of the pipeline arrangement plate and is used for arranging a liquid medicine speed regulation module.
Specifically, the reverse side of the pipeline arrangement plate is provided with a liquid inlet, a liquid outlet, a first connecting pipe and one or more flow regulating pipes.
The first connecting pipe is used for communicating the liquid inlet with the valve core of the regulating valve, and the liquid medicine of the liquid inlet enters the valve core through the first connecting pipe.
The flow regulating pipe is used for communicating the valve core of the regulating valve with the liquid outlet, and different flow regulating pipes can correspond to different flow rates.
Other technical features are referred to the previous embodiments and will not be described here again.
The components may be selectively and operatively combined in any number within the scope of the present disclosure. In addition, terms like "comprising," "including," and "having" should be construed by default as inclusive or open-ended, rather than exclusive or closed-ended, unless expressly defined to the contrary. All technical, scientific, or other terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Common terms found in dictionaries should not be too idealized or too unrealistically interpreted in the context of the relevant technical document unless the present disclosure explicitly defines them as such. Any alterations and modifications of the present invention, which are made by those of ordinary skill in the art based on the above disclosure, are intended to be within the scope of the appended claims.
Claims (9)
1. An exhaust system of a variable speed infusion pump, installed in a flow controller of the infusion pump, characterized in that: the exhaust system comprises a four-way pipe, a first pipeline of the four-way pipe is connected with an infusion pipe, a second pipeline of the four-way pipe is connected with a reserved flow pipe, a third pipeline of the four-way pipe is connected with a second connecting pipe, a fourth pipeline of the four-way pipe is connected with an exhaust plug, the infusion pipe is connected with a liquid inlet through an additional liquid storage bag, the reserved flow pipe is communicated with the liquid inlet, the second connecting pipe is communicated with a liquid outlet, and the exhaust plug is used for guiding air and preventing liquid from passing through;
a hose is arranged at the junction of the first pipeline and the fourth pipeline and the junction of the second pipeline and the third pipeline, the hose is used as a fluid stop to prevent gas from entering the second pipeline and the third pipeline in an initial state, and when liquid medicine is injected into the infusion pump through the liquid inlet, the air in the additional liquid storage bag is communicated with a four-way pipe of an exhaust system through a communicated infusion pipe, and the gas in the pipeline enters the exhaust plug and is exhausted through the exhaust plug due to the flow stop effect of the hose; when the liquid medicine is needed to be added, the additional liquid storage bag is pressed, and as the liquid medicine enters the four-way pipe, the hose deforms when receiving preset pressure to enable the first pipeline to be communicated with the third pipeline, so that the liquid medicine in the infusion pipe enters the second connecting pipe;
the hose is positioned between the second pipeline and the third pipeline and is communicated with the second pipeline and the third pipeline, and the length of the hose is longer than that of an outlet at the junction of the first pipeline and the fourth pipeline; the vent plug is filled with a filter medium capable of allowing liquid to pass and preventing the liquid from passing.
2. The exhaust system of claim 1, wherein: the first pipeline is perpendicular to the fourth pipeline, the second pipeline, the third pipeline and the fourth pipeline are arranged in parallel, the second pipeline and the third pipeline are arranged in a straight-through mode, and the third pipeline and the fourth pipeline are located on the same side.
3. An exhaust system according to claim 2, characterized in that: the hose is a silica gel tube.
4. The utility model provides a flow controller of infusion pump, flow controller includes governing valve and shell, the regulation valve is adorned in the shell inside can be rotatory in order to adjust liquid medicine flow for the shell, be provided with inlet and liquid outlet on the shell, its characterized in that: an exhaust system according to claims 1-3 mounted in said housing.
5. The flow controller of claim 4, wherein: the device also comprises a pipeline arrangement plate arranged in the shell, wherein the middle part of the pipeline arrangement plate is provided with a regulating valve, and the front surface of the pipeline arrangement plate is provided with a liquid medicine adding module which comprises the additional liquid storage bag, an exhaust system, an infusion pipe, a reserved flow pipe, a second connecting pipe and an exhaust plug; the back surface of the pipeline arrangement plate is provided with a liquid medicine speed regulation module which comprises a liquid inlet, a liquid outlet, a first connecting pipe and one or more flow regulation pipes, wherein the first connecting pipe is used for communicating the liquid inlet with the regulating valve, and the flow regulation pipes are used for communicating the regulating valve with the liquid outlet.
6. The flow controller of claim 4, wherein: the liquid inlet comprises a four-way pipe, a first pipeline is communicated with a liquid inlet pipeline, a second pipeline is communicated with an infusion pipe, a third pipeline is communicated with a first connecting pipe, and a fourth pipeline is connected with a reserved flow pipe; the liquid outlet comprises a four-way pipe, the first pipeline is communicated with a liquid outlet pipeline, the second pipeline and the third pipeline are respectively connected with a flow regulating pipe, and the fourth pipeline is communicated with a second connecting pipe.
7. A variable speed infusion pump comprising a reservoir and a flow controller in communication via a connecting line, characterized in that: the flow controller is the flow controller of any one of claims 4-6.
8. The variable speed infusion pump of claim 7, wherein: the liquid outlet is provided with a liquid outlet joint, and the connecting pipeline is provided with a medicine adding port for adding medicines.
9. An infusion method of a variable speed infusion pump according to claim 7 or 8, comprising the steps of: when the liquid medicine is filled into the infusion pump, the air in the additional liquid storage bag is communicated with the four-way pipe of the exhaust system through the communicated infusion pipe, and the air enters the exhaust plug and is exhausted through the exhaust plug due to the flow stopping effect of the hose; when the liquid medicine is needed to be added, the additional liquid storage bag is pressed to enable the liquid medicine to enter the four-way pipe, the hose deforms under the pressure of the liquid medicine to enable the first pipeline to be communicated with the third pipeline, and the liquid medicine in the infusion pipe enters the liquid outlet through the second connecting pipe.
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| CN111001063A (en) | 2020-04-14 |
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