CN114247006A - Infusion apparatus capable of automatically stopping liquid and preventing blood return - Google Patents
Infusion apparatus capable of automatically stopping liquid and preventing blood return Download PDFInfo
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- CN114247006A CN114247006A CN202210068650.4A CN202210068650A CN114247006A CN 114247006 A CN114247006 A CN 114247006A CN 202210068650 A CN202210068650 A CN 202210068650A CN 114247006 A CN114247006 A CN 114247006A
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- 239000007788 liquid Substances 0.000 title claims abstract description 321
- 238000001802 infusion Methods 0.000 title claims abstract description 162
- 239000008280 blood Substances 0.000 title claims abstract description 38
- 210000004369 blood Anatomy 0.000 title claims abstract description 38
- 239000003814 drug Substances 0.000 claims abstract description 111
- 230000003068 static effect Effects 0.000 claims abstract description 48
- 238000007789 sealing Methods 0.000 claims abstract description 37
- 241001411320 Eriogonum inflatum Species 0.000 claims abstract description 15
- 210000003462 vein Anatomy 0.000 claims abstract description 13
- 238000001990 intravenous administration Methods 0.000 claims abstract description 10
- 238000005192 partition Methods 0.000 claims description 10
- 239000007779 soft material Substances 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000004803 Di-2ethylhexylphthalate Substances 0.000 claims description 3
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 3
- 239000004014 plasticizer Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000000474 nursing effect Effects 0.000 abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 230000002265 prevention Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 206010001526 Air embolism Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
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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
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
-
- 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
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- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses an infusion apparatus capable of automatically stopping liquid and preventing blood return, which comprises a liquid sealing pool device, a bottle stopper puncture outfit, a vent valve, a dropping funnel, a spiral connector, an intravenous infusion needle, a flow regulator and an infusion hose. The invention mainly uses the function of automatically storing liquid medicine in the liquid sealing pool cavity of the liquid sealing pool device and effectively utilizes the liquid medicine in the liquid sealing pool cavity to form static pressure and sealing function to prevent air from entering human veins after the liquid medicine in the infusion bottle is completely infused, namely, the static pressure of the liquid in the infusion bottle is zero, the atmospheric pressure, the static pressure of the liquid in the liquid sealing pool cavity and the human vein pressure in the wall of an infusion hose are kept in a constant pressure state, namely, the infusion apparatus realizes the functions of automatically stopping liquid and preventing blood return. When the infusion is finished at every turn, the nursing staff is not required to repeatedly confirm that the redundant air remained in the infusion hose is discharged again manually for the second time, the nursing workload is greatly reduced, the cavity position of the liquid seal pool device is slightly extruded after the liquid is automatically stopped, the residual liquid medicine in the cavity of the liquid seal pool can be completely infused, and the nursing quality is improved.
Description
Technical Field
The invention relates to the technical field of transfusion by effectively utilizing water seal and static pressure principles, in particular to an infusion apparatus capable of automatically stopping liquid and preventing blood return.
Background
Water seals, i.e. water seals, are generally used for low pressure gas seals, in particular for liquid columns having a certain height in the installation, preventing gas from escaping into the drainage pipes, and are usually implemented by means of traps (see fig. 1).
The intravenous infusion is to utilize the physical principle of static pressure and atmospheric pressure formed by the height of liquid medicine (liquid) to deliver the liquid medicine into human body. The liquid medicine in the infusion bottle is acted by atmospheric pressure and gravity, so that the liquid medicine flows into the infusion hose to form a water column, and when the water column pressure (atmospheric pressure plus the static pressure of the liquid medicine) is greater than the venous pressure, the liquid medicine in the bottle can smoothly flow into the veins of the human body. Under normal environment, the venous pressure is greater than the atmospheric pressure, and the infusion bottle should be hung about 50 ~ 60cm above the puncture position during infusion and form certain water column pressure, makes water column pressure be greater than the venous pressure, and the liquid medicine of inputing just can flow to human venous blood vessel smoothly.
At present, (1) a three-way bottle stopper puncture outfit is used for connecting an infusion bottle and an infusion apparatus, the upper part of the bottle stopper puncture outfit is used for puncturing and connecting liquid medicine in the infusion bottle, the lower part of the bottle stopper puncture outfit is provided with an infusion hose for connecting the liquid medicine to flow downwards, the middle of the bottle stopper puncture outfit is protruded with an air filtering vent valve (pipe), when the liquid medicine flows downwards, the air pressure in the infusion bottle is reduced, air is pressed into the infusion bottle from the vent valve by atmospheric pressure, so that the static pressure formed by the liquid medicine in the infusion bottle and the atmospheric pressure outside the infusion bottle keep the air pressure difference constant, and the liquid medicine in the infusion bottle can flow out at a constant speed; (2) the Murphy dropper is connected in the middle of the transfusion hose below the transfusion bottle, the speed of the liquid medicine dripped into the Murphy dropper (also called a dropping funnel) is adjusted by the flow regulator, and the liquid medicine is required to be left below the Murphy dropper, so that the pressure of the transfusion can be kept unchanged, namely the speed of the transfusion is kept unchanged.
At present, when a common infusion set is used for infusion or liquid changing, if large air bubbles are mixed in an infusion hose, venous air embolism of a patient can be caused, and the common infusion set can seriously and even endanger life.
Disclosure of Invention
The invention aims to provide an infusion apparatus capable of automatically stopping liquid and preventing blood return. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides an infusion apparatus capable of automatically stopping liquid and preventing blood return, which comprises a liquid sealing pool device, a bottle stopper puncture outfit, a dropping funnel, a spiral connector, an intravenous infusion needle, a flow regulator, an infusion hose and a vent valve; the bottle stopper puncture outfit, the liquid seal pool device, the dropping funnel, the spiral connector and the intravenous infusion needle are communicated through the infusion hose in sequence; the infusion hose penetrates through the flow regulator, and the vent valve is connected with the bottle stopper puncture outfit; the liquid seal pool device comprises an input pipe orifice, a liquid seal pool cavity and an output pipe orifice.
Preferably, when the liquid medicine in the infusion bottle and the static pressure formed by the liquid medicine in the infusion bottle are greater than zero, the liquid medicine in the infusion bottle enters the cavity of the liquid sealing tank through the input pipe orifice of the liquid sealing tank device, the static pressure formed by the liquid medicine in the infusion bottle is greater than the static pressure formed by the liquid medicine in the cavity of the liquid sealing tank due to the existence of atmospheric pressure, the height of the infusion bottle and the vent valve, the liquid medicine in the cavity of the liquid sealing tank normally flows into the output pipe orifice of the liquid sealing tank device and smoothly enters the dropping funnel and the infusion hose due to the pressure, and meanwhile, the static pressure formed by the liquid medicine in the infusion bottle is greater than the venous pressure of a human body in the wall of the infusion hose due to the height of the infusion bottle and the vent valve, and the infusion apparatus capable of automatically stopping liquid and preventing blood return starts automatic infusion.
When the liquid medicine in the infusion bottle is completely infused and the liquid medicine is not available and the static pressure formed by the liquid medicine in the infusion bottle is zero, the atmospheric pressure and the liquid medicine in the liquid seal pool cavity can not enter the output pipe orifice of the liquid seal pool device any more, and because the height of the liquid seal pool device and the static pressure and the sealing action formed by the liquid medicine in the liquid seal pool cavity of the liquid seal pool device can automatically store the liquid medicine and effectively utilize the liquid medicine in the liquid seal pool cavity, the liquid medicine automatically stored in the liquid seal pool cavity effectively utilizes the liquid seal pool cavity, so that the static pressure formed by the liquid medicine in the liquid seal pool cavity is completely equal to the venous pressure of a human body in the wall of the infusion hose, air can be prevented from entering veins of the human body after the liquid medicine in the infusion bottle is completely infused, and the automatic liquid stopping and blood returning prevention infusion apparatus can realize automatic liquid stopping and blood returning prevention.
Preferably, the liquid seal pool device comprises a liquid seal body, a liquid seal pool cavity, an input inner pipeline and an output inner pipeline; the liquid seal pool cavity is arranged inside the liquid seal body, the input inner pipeline is connected with an input pipe orifice in the liquid seal pool cavity, and the output inner pipeline is connected with an output pipe orifice in the liquid seal pool cavity.
Preferably, the input inner pipeline and the output inner pipeline are symmetrically arranged around the periphery of the cavity of the liquid seal pool.
Preferably, the cavity of the liquid seal pool is circular; the output nozzle is a convex nozzle.
Preferably, the cavity of the liquid seal pool comprises a first cavity, a second cavity, a cavity partition plate and a cavity inner through pipe; the first cavity and the second cavity are separated by the cavity partition plate, and the cavity inner through pipe is fixed on the cavity partition plate and used for communicating the first cavity with the second cavity.
Preferably, the part of the through pipe in the cavity, which is located in the first cavity, is a first inner through pipe, and the part of the through pipe in the cavity, which is located in the second cavity, is a second inner through pipe.
Preferably, the height of the input inner pipeline is 60% -90% of the height of the first cavity, the height of the output inner pipeline is 80% -90% of the height of the second cavity, the height of the first inner through pipe is 80% -90% of the height of the first cavity, and the height of the second inner through pipe is 60% -90% of the height of the second cavity.
Preferably, the cavity of the liquid seal pool is cylindrical.
Preferably, the liquid seal body is made of transparent soft material.
Preferably, the transparent soft material is a TPE material, or the transparent soft material is medical grade PVC, MT or MD containing a plasticizer DEHP.
The implementation of one of the technical schemes of the invention has the following advantages or beneficial effects: according to the automatic liquid stopping and blood return preventing infusion apparatus, under the condition of no manual interference, the liquid sealing tank cavity of the liquid sealing tank device has the function of automatically storing liquid medicine and effectively utilizes the static pressure and sealing effect formed by the liquid medicine in the liquid sealing tank cavity (20), so that air is prevented from entering human veins after the liquid medicine is completely infused, the nursing work is greatly reduced, and medical disputes are reduced; when each infusion is finished, the nursing staff can directly replace the next infusion bottle to realize the continuous normal infusion without manually discharging the redundant air remained in the infusion hose again by the nursing staff and repeatedly confirming that the infusion hose is completely free of air; through gently squeezing the liquid seal pool device after automatically stopping liquid, residual liquid medicine liquid in the liquid seal pool cavity can be completely transported, waste of the liquid medicine is avoided, the treatment effect is effectively guaranteed, the nursing quality is greatly improved, the trust of patients to nursing staff is enhanced, and the harmonious development of the disease protection relationship is effectively promoted.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic view of a prior art trapway;
FIG. 2 is a schematic structural diagram of an embodiment of the automatic liquid stopping and blood return preventing infusion apparatus of the present invention;
FIG. 3 is a cross-sectional view of a first configuration of a liquid seal reservoir apparatus of an embodiment of the automatic liquid stop and blood return prevention infusion set of the present invention;
FIG. 4 is a cross-sectional view of a first configuration of a fluid seal reservoir assembly of an embodiment of the automatic fluid stop and blood return prevention infusion set of the present invention;
FIG. 5 is a perspective view of a first configuration of a liquid seal reservoir device of an embodiment of the automatic liquid stopping and blood return preventing infusion set of the present invention;
FIG. 6 is a first schematic diagram of a second configuration of a liquid seal reservoir device of an embodiment of the automatic liquid stopping and blood return preventing infusion set of the present invention;
fig. 7 is a second schematic diagram of a second structure of the liquid seal pool device of the automatic liquid stopping and blood return preventing infusion apparatus embodiment of the invention.
Detailed Description
In order that the objects, aspects and advantages of the present invention will become more apparent, various exemplary embodiments will be described below with reference to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary embodiments in which the invention may be practiced. The same numbers in different drawings identify the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. It is to be understood that they are merely examples of processes, methods, apparatus, etc. consistent with certain aspects of the present disclosure as detailed in the appended claims, and that other embodiments may be used or structural and functional modifications may be made to the embodiments set forth herein without departing from the scope and spirit of the present disclosure.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," and the like are used in the orientations and positional relationships illustrated in the accompanying drawings for the purpose of facilitating the description of the present invention and simplifying the description, and do not indicate or imply that the elements so referred to must have a particular orientation, be constructed in a particular orientation, and be operated. The terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. The term "plurality" means two or more. The terms "connected" and "coupled" are to be construed broadly and may include, for example, a fixed connection, a removable connection, an integral connection, a mechanical connection, an electrical connection, a communicative connection, a direct connection, an indirect connection via intermediate media, and may include, for example, a connection between two elements or an interaction between two elements. The term "and/or" includes any and all combinations of one or more of the associated listed items. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In order to explain the technical solution of the present invention, the following description is made by way of specific examples, which only show the relevant portions of the embodiments of the present invention.
As shown in fig. 2, the present invention provides an embodiment of an infusion apparatus capable of automatically stopping liquid and preventing blood from returning, which comprises a liquid sealing pool device 1, a bottle stopper puncture outfit 2, a dropping funnel 3, a screw connector 4, an intravenous infusion needle 5, a flow regulator 6, an infusion hose 7 and a vent valve 8; the bottle stopper puncture outfit 2, the liquid seal pool device 1, the dropping funnel 3, the spiral connector 4 and the intravenous infusion needle 5 are communicated through the infusion hose 7 in sequence; the infusion hose 7 passes through the flow regulator 6, and the flow regulator 6 can regulate the dropping speed of the liquid medicine in the infusion hose 7. The vent valve 8 is connected with the bottle stopper puncture outfit 2, and then air enters an infusion bottle 9 after being filtered by the vent valve 8; the liquid seal pool device comprises an input pipe orifice 201, a liquid seal pool cavity 20 and an output pipe orifice 202. More specifically, the dropping funnel 3 includes a three-way medicine adding pipe 31. The bottle stopper puncture outfit 2, the dropping funnel 3, the screw connector 4, the intravenous infusion needle 5, the flow regulator 6, the infusion hose 7 and the vent valve 8 can be conventional, can also be specially designed according to the patent of the invention, and are not limited specifically herein.
In this embodiment, the automatic liquid stopping function of the automatic liquid stopping and blood return preventing infusion apparatus of the present invention is realized by the principle that the static pressure formed by the atmospheric pressure and the height difference of the liquid sealing tank device and the liquid medicine in the cavity of the liquid sealing tank are sealed by liquid.
Specifically, when the liquid medicine is in the infusion bottle 9 or the static pressure formed by the liquid medicine in the infusion bottle 9 is greater than zero, the atmospheric pressure, the static pressure generated by the liquid medicine in the infusion bottle and the static pressure formed by the liquid medicine in the liquid seal pool device 1 (the liquid seal pool cavity 20) are greater than the venous pressure of the human body in the wall of the infusion hose 7, and the automatic liquid stopping and blood return preventing infusion apparatus starts automatic infusion; more specifically, when the liquid medicine is in the infusion bottle 9 and the static pressure formed by the liquid medicine in the infusion bottle 9 is more than zero, the liquid medicine in the infusion bottle 9 enters the liquid sealing pool cavity 20 through the input pipe orifice 201 of the liquid sealing pool device 1, the existence of atmospheric pressure, the height of the infusion bottle 9 and the vent valve 8 enable the static pressure intensity formed by the liquid medicine in the infusion bottle 9 to be larger than the static pressure formed by the liquid medicine in the liquid sealing pool cavity 20, and the pressure intensity enables the liquid medicine in the liquid sealing pool cavity 20 to normally flow into the output pipe orifice 202 of the liquid sealing pool device 1 to smoothly enter the dropping funnel 3 and the infusion hose 7, meanwhile, the height of the infusion bottle 9 and the vent valve 8 enable the static pressure intensity formed by the liquid medicine in the infusion bottle 9 to be larger than the venous pressure of the human body in the wall of the infusion hose 7, and the infusion apparatus capable of automatically stopping liquid and preventing blood return starts automatic infusion. Namely, the atmospheric pressure, the static pressure generated by the liquid medicine in the infusion bottle and the static pressure generated by the liquid medicine in the liquid seal pool cavity 20 are greater than the venous pressure of the human body in the wall of the infusion hose 7; wherein the pressure is the sum of atmospheric pressure and the static pressure formed by the liquid medicine in the infusion bottle 9.
Specifically, when the infusion of the liquid medicine in the infusion bottle 9 is completed and no liquid medicine exists or the static pressure generated by the liquid medicine in the infusion bottle 9 is zero, the atmospheric pressure and the static pressure generated by the liquid medicine in the liquid seal tank cavity 20 are equal to the venous pressure of the human body in the wall of the infusion hose 7, namely, the liquid medicine stands in the liquid seal tank cavity of the liquid seal tank device 1 and is kept in a constant pressure state, air is prevented from entering the veins of the human body after the infusion of the liquid medicine in the infusion bottle 9 is completed, and the automatic liquid stopping and blood return preventing infusion apparatus realizes automatic liquid stopping and blood return prevention. The function is not affected by the components and purity of the liquid medicine, and the automatic liquid stopping effect can be ensured.
More specifically, when the liquid medicine in the infusion bottle 9 is completely infused and the static pressure formed by the liquid medicine in the infusion bottle 9 and the liquid medicine in the infusion bottle is zero, the atmospheric pressure and the liquid medicine in the liquid seal pool cavity 20 do not enter the output pipe port 202 of the liquid seal pool device 1 any more, because the height of the liquid seal pool device 1 and the liquid medicine in the liquid seal pool cavity 20 of the liquid seal pool device 1 can automatically store the liquid medicine and effectively utilize the static pressure and the sealing action formed by the liquid medicine in the liquid seal pool cavity 20, the liquid medicine automatically stored in the liquid seal pool cavity 20 effectively utilizes the liquid seal pool cavity 20, so that the static pressure formed by the liquid medicine in the liquid seal pool cavity 20 is completely equal to the venous pressure of the human body in the wall of the infusion hose 7, the air can be prevented from entering the human body vein after the liquid medicine in the infusion bottle is infused, and the automatic liquid stopping and blood return preventing infusion apparatus realizes automatic liquid stopping and blood return preventing. The liquid medicine reserved in the liquid seal pool device 1 is based on the liquid seal principle (namely the water seal principle), so that air can be prevented from entering human veins through the liquid seal pool device 1, blood in the human veins can be prevented from flowing back to the infusion hose, and the personal safety of patients can be guaranteed.
The automatic liquid stopping and blood return preventing infusion apparatus effectively utilizes the height of the liquid sealing pool device to enable liquid medicine in the cavity of the liquid sealing pool to form static pressure or buoyancy, a constant-pressure sealing state is manufactured, and when the liquid medicine (also called liquid medicine) in an infusion bottle completely flows into the cavity of the liquid sealing pool and passes through a certain liquid level depth, the atmospheric pressure and the liquid level depth in the cavity of the liquid sealing pool reach pressure balance and form static pressure of liquid in the cavity of the liquid sealing pool; the liquid seal device mainly has the function of automatically storing liquid medicine in a liquid seal pool cavity of the liquid seal pool device and effectively utilizes the height of the liquid seal pool device to enable the liquid medicine in the liquid seal pool cavity to form static pressure and sealing effect and prevent air from entering human veins after the liquid medicine in an infusion bottle is completely infused, namely, the static pressure of the liquid in the infusion bottle is zero, the atmospheric pressure, the static pressure of the liquid in the liquid seal pool cavity and the human vein pressure in the wall of an infusion hose are kept in a constant pressure state, namely, the infusion apparatus capable of automatically stopping liquid and preventing blood return realizes the functions of automatically stopping liquid and preventing blood return.
The liquid seal pool device of the infusion apparatus capable of automatically stopping liquid and preventing blood return effectively utilizes the action of the liquid seal principle (namely the water seal principle), and under the same atmospheric pressure environment, when the liquid medicine in the infusion bottle is quickly infused in the infusion process, the static pressure of the liquid medicine in the infusion bottle is reduced to zero, and the liquid seal pool device starts to function; when the liquid medicine completely flows into the liquid seal pool device and passes through a certain liquid level depth, the atmospheric pressure and the liquid level depth in the liquid seal pool device reach pressure balance and form the static pressure of the liquid seal liquid medicine; meanwhile, the height of the liquid seal pool device, the static pressure of liquid medicine in the cavity of the liquid seal pool (liquid medicine liquid seal formed by gravity pressure) and the venous pressure of a human body in the wall of the infusion hose reach a balanced state, so that the infusion apparatus naturally achieves the functions of automatically stopping liquid and preventing blood return.
The present invention relates to a positive liquid seal (also called positive liquid seal tank), it is a kind of equipment or container, in which the liquid is held in a certain depth, the mouth of liquid inlet pipe is extended into the bottom of stored liquid, the mouth of output pipe is retained above the liquid level, the air is fed into the liquid inlet pipe, pressed into the stored liquid of liquid seal pool device by means of pressure difference, at the same time fed into the mouth of output pipe and discharged. When the static pressure of the liquid in the infusion bottle is zero, the air inlet pressure is equal to or slightly lower than the air outlet pressure, and the depth of the liquid seal with the stored static pressure in the positive liquid seal is kept unchanged, so that the air inlet pressure and the air outlet pressure are balanced.
As shown in fig. 3-7, the liquid seal pool device 1 includes a liquid seal body 10, a liquid seal pool cavity 20, an input inner pipeline 30 and an output inner pipeline 40; the liquid seal pool cavity 20 is arranged inside the liquid seal body 10, the input inner pipeline 30 is connected with an input pipe orifice 201 of the liquid seal pool cavity 20, and the output inner pipeline 40 is connected with an output pipe orifice 202 of the liquid seal pool cavity 20.
As shown in fig. 3-5, in the present embodiment, the input inner pipeline 30 and the output inner pipeline 40 are symmetrically arranged around the periphery of the liquid seal pool cavity 20; preferably, the liquid seal pool cavity 20 is circular, and the output nozzle 202 is a convex nozzle, so as to facilitate the liquid medicine to enter the output inner pipeline 40 through the output nozzle 202, and of course, the liquid seal pool cavity 20 and the output nozzle 202 may be in other shapes, which is not limited herein.
As shown in fig. 6-7, in the present embodiment, the liquid seal pool cavity 20 includes a first cavity 21, a second cavity 22, a cavity partition 23 and a cavity inner through pipe 24; the first cavity 21 and the second cavity 22 are separated by the cavity partition 23, and the cavity inner through pipe 24 is fixed on the cavity partition 23 for communicating the first cavity 21 and the second cavity 22. The part of the cavity inner through pipe 24 located in the first cavity 21 is a first inner through pipe 241, and the part of the cavity inner through pipe 24 located in the second cavity 22 is a second inner through pipe 242. Preferably, the liquid seal pool cavity 20 is cylindrical, but may be other shapes, and is not limited in this respect. Specifically, the height of the input inner pipe 30 is 60% -90% of the height of the first cavity 21, the height of the output inner pipe 40 is 80% -90% of the height of the second cavity 22, the height of the first inner through pipe 241 is 80% -90% of the height of the first cavity 21, and the height of the second inner through pipe 242 is 60% -90% of the height of the second cavity 22.
In this embodiment, the liquid seal body 10 is made of a transparent soft material, specifically, the transparent soft material is a TPE material, or the transparent soft material is medical grade PVC, MT or MD containing a plasticizer DEHP. Because the liquid seal body 10 is made of transparent soft materials, residual liquid medicine in the cavity of the liquid seal pool can be completely infused by slightly extruding the liquid seal pool device after automatic liquid stopping, so that the waste of the liquid medicine is avoided, the treatment effect is effectively guaranteed, the nursing quality is greatly improved, the trust of patients to nursing staff is enhanced, and the harmonious development of the disease protection relationship is effectively promoted.
According to the automatic liquid stopping and blood return preventing infusion apparatus, under the condition of no manual interference, part of liquid can still be reserved in the liquid seal cavity, so that air is prevented from entering veins of a human body after the infusion of liquid medicine is finished, the nursing work is greatly reduced, and doctor-patient disputes are reduced; when each infusion is finished, the nursing staff can directly replace the next infusion bottle to realize the continuous normal infusion without manually discharging the redundant air remained in the infusion hose again by the nursing staff and repeatedly confirming that the infusion hose is completely empty of air; after the liquid is automatically stopped, the residual liquid medicine in the liquid seal cavity can be completely transported by slightly extruding the liquid seal pool device, so that the waste of the liquid medicine is avoided, the treatment effect is effectively guaranteed, the nursing quality is greatly improved, the trust of patients to nursing staff is enhanced, and the harmonious development of the disease protection relationship is effectively promoted.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. An infusion apparatus capable of automatically stopping liquid and preventing blood return is characterized by comprising a liquid sealing pool device (1), a bottle stopper puncture outfit (2), a dropping funnel (3), a spiral connector (4), an intravenous infusion needle (5), a flow regulator (6), an infusion hose (7) and a vent valve (8); the bottle stopper puncture outfit (2), the liquid seal pool device (1), the dropping funnel (3), the spiral connector (4) and the intravenous infusion needle (5) are communicated through the infusion hose (7) in sequence; the infusion hose (7) passes through the flow regulator (6), and the vent valve (8) is connected with the bottle stopper puncture device (2); the liquid seal pool device (1) comprises an input pipe orifice (201), a liquid seal pool cavity (20) and an output pipe orifice (202);
when liquid medicine in an infusion bottle (9) and the static pressure formed by the liquid medicine in the infusion bottle (9) are more than zero, the liquid medicine in the infusion bottle (9) enters the liquid seal pool cavity (20) through an input pipe orifice (201) of the liquid seal pool device (1), the static pressure formed by the liquid medicine in the infusion bottle (9) is higher than the static pressure formed by the liquid medicine in the liquid seal pool cavity (20) due to the existence of atmospheric pressure, the height of the infusion bottle (9) and the vent valve (8), the pressure of the liquid medicine in the liquid seal pool cavity (20) is higher than the static pressure formed by the liquid medicine in the liquid seal pool cavity (20), the pressure of the liquid medicine is higher than the pressure of a human body in the wall of the infusion hose (7), the liquid medicine in the infusion bottle (9) normally flows into the drip chamber (3) and the infusion hose (7) due to the height of the infusion bottle (9) and the vent valve (8), the infusion apparatus with automatic liquid stopping and blood return preventing functions starts automatic infusion;
when the liquid medicine in the infusion bottle (9) is completely infused and the static pressure formed by the liquid medicine and the liquid medicine in the infusion bottle (9) is zero, the atmospheric pressure and the liquid medicine in the liquid seal pool cavity (20) do not enter the output pipe port (202) of the liquid seal pool device (1), and because the height of the liquid seal pool device (1) and the static pressure and the sealing action formed by the liquid medicine in the liquid seal pool cavity (20) of the liquid seal pool device (1) can be automatically stored and the liquid medicine can be effectively utilized, the liquid medicine automatically stored in the liquid seal pool cavity (20) can effectively utilize the liquid seal pool cavity (20) to ensure that the static pressure formed by the liquid medicine in the liquid seal pool cavity (20) is completely equal to the intravenous pressure of the human body in the wall of the infusion hose (7), namely, the air can be prevented from entering the veins of the human body after the infusion of the liquid medicine in the infusion bottle is completely infused, the automatic liquid stopping and blood return preventing infusion apparatus realizes automatic liquid stopping and blood return preventing.
2. The automatic liquid-stopping and blood-return-preventing infusion set according to claim 1, wherein the liquid seal pool device (1) further comprises a liquid seal body (10), an input inner pipeline (30) and an output inner pipeline (40); the liquid seal pool cavity (20) is arranged inside the liquid seal body (10), the input inner pipeline (30) is connected with an input pipe orifice (201) of the liquid seal pool cavity (20), and the output inner pipeline (40) is connected with an output pipe orifice (202) of the liquid seal pool cavity (20).
3. The automatic liquid-stopping and blood-return-preventing infusion set according to claim 2, wherein the input inner pipeline (30) and the output inner pipeline (40) are symmetrically arranged around the periphery of the liquid sealed pool cavity (20).
4. The automatic liquid-stopping and blood-return-preventing infusion set according to claim 3, wherein the liquid sealing tank cavity (20) is circular; the output nozzle (202) is a convex nozzle.
5. The automatic liquid-stopping and blood-return-preventing infusion set according to claim 2, wherein the liquid seal pool cavity (20) comprises a first cavity (21), a second cavity (22), a cavity partition plate (23) and a cavity inner through pipe (24) penetrating through the cavity partition plate (23);
the first cavity (21) and the second cavity (22) are separated by the cavity partition plate (23), and the cavity inner through pipe (24) is fixed on the cavity partition plate (23) and used for communicating the first cavity (21) with the second cavity (22).
6. The automatic liquid-stopping and blood-return-preventing infusion set according to claim 5, wherein the portion of the cavity inner through pipe (24) located in the first cavity (21) is a first inner through pipe (241), and the portion of the cavity inner through pipe (24) located in the second cavity (22) is a second inner through pipe (242).
7. The automatic liquid stopping and blood return preventing infusion set according to claim 6, wherein the height of the input inner pipeline (30) is 60% -90% of the height of the first cavity (21), the height of the output inner pipeline (40) is 80% -90% of the height of the second cavity (22), the height of the first inner through pipe (241) is 80% -90% of the height of the first cavity (21), and the height of the second inner through pipe (242) is 60% -90% of the height of the second cavity (22).
8. The automatic liquid-stopping and blood-return-preventing infusion set according to claim 5, wherein the liquid sealing tank cavity (20) is cylindrical.
9. The automatic liquid-stopping and blood-return-preventing infusion set according to any one of claims 1-8, wherein the liquid seal body (10) is made of transparent soft material.
10. The automatic liquid stopping and blood return preventing infusion set according to claim 9, wherein the transparent soft material is TPE material or medical grade PVC, MT or MD containing DEHP plasticizer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210068650.4A CN114247006B (en) | 2022-01-20 | 2022-01-20 | Infusion apparatus capable of automatically stopping liquid and preventing blood return |
| PCT/CN2023/081329 WO2023138704A1 (en) | 2022-01-20 | 2023-03-14 | Automatic liquid-stop and blood-return-prevention infusion set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210068650.4A CN114247006B (en) | 2022-01-20 | 2022-01-20 | Infusion apparatus capable of automatically stopping liquid and preventing blood return |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114247006A true CN114247006A (en) | 2022-03-29 |
| CN114247006B CN114247006B (en) | 2024-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210068650.4A Active CN114247006B (en) | 2022-01-20 | 2022-01-20 | Infusion apparatus capable of automatically stopping liquid and preventing blood return |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114247006B (en) |
| WO (1) | WO2023138704A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023138704A1 (en) * | 2022-01-20 | 2023-07-27 | 上海协贮智能科技服务有限公司 | Automatic liquid-stop and blood-return-prevention infusion set |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117159840B (en) * | 2023-11-03 | 2024-01-05 | 吉林大学 | Accurate transfusion system based on bubble filtering is carried out in automatic pressure release |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2023138704A1 (en) | 2023-07-27 |
| CN114247006B (en) | 2024-02-20 |
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Address after: Room 502, 5th Floor, Building 4, No. 333 Jinyuan 5th Road, Jiading District, Shanghai, 2018 Patentee after: Shanghai Xiechu Intelligent Technology Service Co.,Ltd. Country or region after: China Address before: 201914 room a1-9533, No. 58 Fumin Branch Road, Hengsha Township, Chongming District, Shanghai (Shanghai Hengtai Economic Development Zone) Patentee before: Shanghai Xiechu Intelligent Technology Service Co.,Ltd. Country or region before: China |