CN103212132B - Push-in bellows transfusion device - Google Patents
Push-in bellows transfusion device Download PDFInfo
- Publication number
- CN103212132B CN103212132B CN201310123793.1A CN201310123793A CN103212132B CN 103212132 B CN103212132 B CN 103212132B CN 201310123793 A CN201310123793 A CN 201310123793A CN 103212132 B CN103212132 B CN 103212132B
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- Prior art keywords
- bellows
- feed liquor
- liquid
- bellows housing
- housing
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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
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M5/14586—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of a flexible diaphragm
-
- 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
Abstract
A kind of push-in bellows transfusion device, comprise one with feed liquor, the bellows housing of fluid joint, wherein feed liquor, fluid joint is respectively by tube for transfusion and medicinal liquid bottle, infusion needle is connected, and at feed liquor, fluid joint is separately installed with feed liquor locking flap valve and fluid unidirectional valve, flexible silicon glued membrane for extruding bellows housing is installed in the outside of bellows housing, the outside of flexible silicon glued membrane is provided with the trigger truncated cone contact contacted with elastica, the rear end that the bellows intracavity of described bellows housing is positioned at liquid outlet unidirectional valve is also provided with drain shelves, the inwall of drain shelves side and bellows housing defines catches air chamber, the opposite side of drain shelves and the inwall of bellows housing define exhaust duct.The present invention is under trigger truncated cone contact back and forth touches film body effect thus change cavity volume, actuate feed liquor locking flap valve close and liquid outlet unidirectional valve open, make liquid orientation flow into blood vessel, come and go according to frequency and sequentially changed liquid infusion process.
Description
Technical field
The invention belongs to medical instruments field, be specifically related to a kind of push-in bellows transfusion device.
Background technology
Over more than 100 year, venous transfusion be the clinical department of domestic and international medical institutions at different levels the most generally, one of the most effective treatment means.According to authoritative department investigation, the Clinical Inpatients of medical institutions more than 90% all needs to accept infusion treatment.And each Surgical Inpatients almost 100% needs to accept infusion, about there are 1,300,000,000 populations in China, according to statistics, on average wants infusion liquid 8 bottles for each person every year, and annual amount of infusion can reach 10,000,000,000 bottles.In today of medical science and technology development, conventional liquid infusion method is still also at " Mo Feishi " fixing infusion model that use was invented before more than 100 year, and according to statistics, there is family more than 200 in the producer that the whole nation produces " Mo Feishi " transfusion device.Mo Feishi transfusion device mainly exists in Clinical practice that patient body position is relatively fixing, active receiving restriction, accurately can not control the inconveniences such as transfusion speed for many years.
Except traditional " Mo Feishi " transfusion device, have also appeared Pneumatic automatic transfusion device, pump type automatic transfusion device in recent years, monolithic processor controlled Portable automatic infusion apparatus.Its shortcoming is that too busy to get away drip stand hangs liquid respectively, and need extra power supply and infusion pump, infusion pump volume is large, needs driven by power or continuous manual inflation etc.Be difficult in a word use at clinical expansion.
Utility model patent CN202426961U discloses a kind of disposable bellows transfusion device, liquid directed flow can be realized under the effect of trigger, but although it is referred to when liquid infusion is complete in explanation, automatic startup prevents air from entering blood circulation and preventing backflow of blood from entering the function of liquid-transport pipe-line, ensure that safety and the effectiveness of infusion process, but in whole technical scheme, just give above imagination of dealing with problems, in technical scheme, do not provide the means of solution.
Summary of the invention
The object of the present invention is to provide and a kind ofly can not only change traditional infusion model, do not need infusion bottle to be fixed on the position higher than suffering from all, infusion bottle can be placed on any position to infuse, and achieve and prevent air from entering blood circulation and prevent backflow of blood from entering the push-in bellows transfusion device of the function of liquid-transport pipe-line.
In order to achieve the above object, the technical solution used in the present invention is: comprise one with feed liquor, the bellows housing of fluid joint, wherein, feed liquor, fluid joint is respectively by tube for transfusion and medicinal liquid bottle, syringe needle is connected, and at feed liquor, fluid joint is separately installed with feed liquor locking flap valve and liquid outlet unidirectional valve, flexible silicon glued membrane for extruding bellows housing is installed in the outside of bellows housing, the outside of flexible silicon glued membrane is provided with the trigger truncated cone contact contacted with flexible silicon glued membrane, the rear end that the bellows intracavity of described bellows housing is positioned at liquid outlet unidirectional valve is also provided with drain shelves, the inwall of drain shelves side and bellows housing defines catches air chamber, the opposite side of drain shelves and the inwall of bellows housing define exhaust duct.
The described bellows housing being positioned at the side of elastica is also provided with fast plug.
Described medicinal liquid bottle is rack-mount, and on support, be also provided with band and the bayonet socket of fixing medicinal liquid bottle.
The volume in bellows chamber of the present invention is the seal chamber of 10.5, container casing is designed with feed liquor locking flap valve, fluid unidirectional valve, intracavity is provided with drain shelves and exhaust passage, the liquid of infusion depends on the elastica that housing is arranged, under trigger truncated cone contact back and forth touches film body effect thus change cavity volume, actuate feed liquor locking flap valve close and liquid outlet unidirectional valve opening, make liquid orientation flow into blood vessel, come and go order according to frequency and changed liquid infusion process.
Accompanying drawing explanation
Fig. 1 is liquid directed flow structural representation of the present invention;
Fig. 2 is that bellows of the present invention is to minimum gas identification and lock function schematic diagram;
Fig. 3 is that the present invention prevents Venous Reflux functional schematic.
Wherein, 1 syringe needle; 2 tube for transfusions; 3 flexible silicon glued membranes; 4 fluid joints; 5 liquid outlet unidirectional valves; 6 bellows housings; 7 bellows chambeies; 8 feed liquors are interrupted; 9 feed liquor locking flap valves; 10 drain shelves; 11 catch air chamber; 12 fast plug; 13 trigger truncated cone contacts; 14 medicinal liquids; 15 exhaust ducts; 16 supports; 17 medicinal liquid bottles; 18 bands; 19 dops.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
See Fig. 1, 2, the present invention includes one with feed liquor, fluid joint 8, the bellows housing 6 of 4, wherein, feed liquor, fluid joint 8, 4 respectively by tube for transfusion 2 and medicinal liquid bottle 17, syringe needle 1 is connected, and at feed liquor, fluid joint 8, feed liquor locking flap valve 9 and liquid outlet unidirectional valve 5 is separately installed with on 4, flexible silicon glued membrane 3 for extruding bellows housing 6 is installed in the outside of bellows housing 6, the outside of flexible silicon glued membrane 3 is provided with the trigger truncated cone contact 13 contacted with elastic gum silicon fiml 3, the bellows housing 6 being positioned at the side of flexible silicon glued membrane 3 is also provided with fast plug 12, the rear end being positioned at liquid outlet unidirectional valve 5 in the bellows chamber 7 of described bellows housing 6 is also provided with drain shelves 10, the inwall of drain shelves 10 side and bellows housing 6 defines catches air chamber 11, the opposite side of drain shelves 10 and the inwall of bellows housing 6 define exhaust duct 15.Medicinal liquid bottle 17 of the present invention is arranged on support 16, and on support 16, be also provided with band 18 and the bayonet socket 19 of fixing medicinal liquid bottle 17.
During use, medicinal liquid bottle 17 is arranged on support 16, medicinal liquid bottle is fixed by band 18 and bayonet socket 19, and then by fast plug 12, bellows housing 6 is fixing after, respectively medicinal liquid bottle is interrupted with the feed liquor of bellows housing by tube for transfusion, syringe needle interrupts with fluid and be connected.
Liquid directed flow function of the present invention: as seen from Figure 1, medicinal liquid 14 enters bellows chamber 7, account for have living space after, form a complete liquid bag, at this moment trigger truncated cone contact 13 advances mobile, elastica 3 is to intracavity flexural deformation, VB equals zero, at this moment medicinal liquid 14 is squeezed, because medicinal liquid 14 pressurized can not reduce, extruding force passes to liquid outlet unidirectional valve 5, liquid outlet unidirectional valve 5 departs from original position and forms passage, pressurized medicinal liquid is discharged bellows chamber 7 and is entered in tube for transfusion 2, produce infuse medical fluid power, meanwhile feed liquor locking flap valve 9 is because extruding by bellows intracavity liquid, locking flap valve is close to front cover, locking liquid can not flow backwards.When trigger truncated cone contact 13 resets, flexible silicon glued membrane 3 flexural deformation loses VB=-VB thereupon, produces the vacuum being equivalent to flexural deformation volume VB in bellows chamber 7.Liquid outlet unidirectional valve 5 resets and is close to front cover, and feed liquor locking flap valve 9 is opened under suction function, and medicinal liquid enters in bellows chamber 7, moves in circles with this, and medicinal liquid bottle 17 medicinal liquid just sucks bellows chamber endlessly, then injects human vein by the output of bellows chamber through syringe needle 1.
Minimum gas identification and lock function: see Fig. 2, the present invention is in bellows infusion way, may occur that air enters the situation in bellows chamber 7, because the proportion of air and liquid is 3.2:1000, gas can float rapidly in liquid, and straight line rises, and captures peak, as seen from Figure 2, bellows chamber 7 peak is designed with and catches the accommodation of air chamber 11 supplied gas.The gas of catching air chamber 11 moves back and forth distortion, the positive and negative alternation of fluid pressure due to elastica 3, when bellows chamber malleation in liquid gas by the effect of its pressure.Because gas density is 3.2/1000 liquid body pressure of liquid, gas volume is reduced, absorb the pressure of liquid.At this moment liquid does not have enough extruding forces to promote the unlatching of fluid individual event flap valve, and bellows intracavity liquid can not to output flow.When bellows chamber negative pressure, gas expansion in liquid, destroys bellows intracavity vacuum, and feed liquor locking flap valve is in closedown without pressure reduction promotes, and causes infusion process to interrupt.Now unidirectional fluid flap valve is in closed condition, and because vein pressure and tube for transfusion overbottom pressure cannot discharge, infusion pressure and vein pressure maintain an equal level, and medicinal liquid does not enter, and venous blood can not flow backwards.
The emphasis of this principle is: 1. the proportion of air is the 3.2/1000(floating of liquid (water) proportion); 2. the density of air is that the 3.2/1000(gas of liquid (water) density is compressible); 3. liquid incompressible (ordinary circumstance); 4. gas floats (ordinary circumstance) at water cathetus; 5. gas floats to peak (as level indicator) in water.
Prevent blood reflux function: see Fig. 3, when liquid infusion is complete, trigger truncated cone contact stops moving back and forth, and elastica stops vibration.In normal infusion process, bellows infusion pressure P notes the > P resistance of ducting+vein pressure P arteries and veins, P notes >, and (P hinders+P arteries and veins, P note-(P hinders+P arteries and veins)=△, under the effect of direct flow forces △ P, medicinal liquid injects vein blood vessel along tube for transfusion.
When infusion-completed: infusion flow-rate is zero, resistance of ducting disappearance P hinders=0.Direct flow forces △ P=0, P note-P arteries and veins=0, P note=P arteries and veins under flexible silicon glued membrane distorting tension (energy storage) effect, and under the release action of bellows energy storage, pressure balanced in venous blood pressure and tube for transfusion, makes blood can not blow back into syringe needle and cause obstruction.
Claims (1)
1. a push-in bellows transfusion device, it is characterized in that: comprise one with feed liquor, fluid joint (8, 4) bellows housing (6), wherein, feed liquor, fluid joint (8, 4) respectively by tube for transfusion (2) and medicinal liquid bottle (17), syringe needle (1) is connected, and at feed liquor, fluid joint (8, 4) feed liquor locking flap valve (9) and liquid outlet unidirectional valve (5) is separately installed with on, elastica (3) for extruding bellows housing (6) is installed in the outside of bellows housing (6), the outside of elastica (3) is provided with the trigger truncated cone contact (13) contacted with elastica (3), the rear end being positioned at liquid outlet unidirectional valve (5) in the bellows chamber (7) of described bellows housing (6) is also provided with drain shelves (10), the inwall of drain shelves (10) side and bellows housing (6) defines catches air chamber (11), catch the peak that air chamber (11) is positioned at bellows chamber (7), catch air chamber (11) configuration ground to be used for identifying and locking minimum gas, when bellows chamber (7) malleation, the gas volume of catching in air chamber (11) reduces, absorb the pressure of liquid, liquid does not have enough extruding forces to promote liquid outlet unidirectional valve (5) unlatching, bellows chamber (7) interior liquid can not to output flow, when bellows chamber (7) negative pressure, destroy bellows chamber (7) interior vacuum, feed liquor locking flap valve (9) is in closedown without pressure reduction promotes, liquid outlet unidirectional valve (5) is in closed condition simultaneously, infusion process is caused to interrupt, the opposite side of drain shelves (10) and the inwall of bellows housing (6) define exhaust duct (15), and the described bellows housing (6) being positioned at the side of elastica (3) is also provided with fast plug (12), described medicinal liquid bottle (17) is arranged on support (16), and on support (16), be also provided with band (18) and the bayonet socket (19) of fixing medicinal liquid bottle (17).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310123793.1A CN103212132B (en) | 2013-04-10 | 2013-04-10 | Push-in bellows transfusion device |
| PCT/CN2013/077305 WO2014166156A1 (en) | 2013-04-10 | 2013-06-17 | Quick-insertion membrane pump-type transfusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310123793.1A CN103212132B (en) | 2013-04-10 | 2013-04-10 | Push-in bellows transfusion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103212132A CN103212132A (en) | 2013-07-24 |
| CN103212132B true CN103212132B (en) | 2016-01-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310123793.1A Active CN103212132B (en) | 2013-04-10 | 2013-04-10 | Push-in bellows transfusion device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103212132B (en) |
| WO (1) | WO2014166156A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86206279U (en) * | 1986-08-28 | 1987-05-20 | 孙连峰 | Intravenous pressure infusion unit |
| CN2568198Y (en) * | 2002-08-29 | 2003-08-27 | 欣慰 | Portable multifunctional safety transfusion system |
| CN1642589A (en) * | 2002-03-14 | 2005-07-20 | 梅杜克斯公司 | Ambulatory infusion membrane pump |
| CN101708350A (en) * | 2008-07-25 | 2010-05-19 | Wwt工程建筑设备有限公司 | Fluid warming bag and bag heater |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6302653B1 (en) * | 1999-07-20 | 2001-10-16 | Deka Products Limited Partnership | Methods and systems for detecting the presence of a gas in a pump and preventing a gas from being pumped from a pump |
| US9248225B2 (en) * | 2008-01-23 | 2016-02-02 | Deka Products Limited Partnership | Medical treatment system and methods using a plurality of fluid lines |
| CN101927044A (en) * | 2010-09-28 | 2010-12-29 | 柯丽红 | Intravenous infusion set capable of exhausting air automatically |
| US8382711B2 (en) * | 2010-12-29 | 2013-02-26 | Baxter International Inc. | Intravenous pumping air management systems and methods |
| CN202426961U (en) * | 2012-02-02 | 2012-09-12 | 中国人民解放军第四军医大学 | Disposable bellows transfusion device |
-
2013
- 2013-04-10 CN CN201310123793.1A patent/CN103212132B/en active Active
- 2013-06-17 WO PCT/CN2013/077305 patent/WO2014166156A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86206279U (en) * | 1986-08-28 | 1987-05-20 | 孙连峰 | Intravenous pressure infusion unit |
| CN1642589A (en) * | 2002-03-14 | 2005-07-20 | 梅杜克斯公司 | Ambulatory infusion membrane pump |
| CN2568198Y (en) * | 2002-08-29 | 2003-08-27 | 欣慰 | Portable multifunctional safety transfusion system |
| CN101708350A (en) * | 2008-07-25 | 2010-05-19 | Wwt工程建筑设备有限公司 | Fluid warming bag and bag heater |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014166156A1 (en) | 2014-10-16 |
| CN103212132A (en) | 2013-07-24 |
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