CN103212132A - Quick-plug type membrane box infusion apparatus - Google Patents
Quick-plug type membrane box infusion apparatus Download PDFInfo
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- CN103212132A CN103212132A CN2013101237931A CN201310123793A CN103212132A CN 103212132 A CN103212132 A CN 103212132A CN 2013101237931 A CN2013101237931 A CN 2013101237931A CN 201310123793 A CN201310123793 A CN 201310123793A CN 103212132 A CN103212132 A CN 103212132A
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- China
- Prior art keywords
- liquid
- bellows
- membrane
- membrane box
- liquid outlet
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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
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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
Abstract
The invention relates to a quick-plug type membrane box infusion apparatus, which comprises a membrane box casing, wherein the membrane box casing is provided with a liquid inlet joint and a liquid outlet joint, the liquid inlet joint and the liquid outlet joint are respectively communicated with a medicine liquid bottle and an infusion needle through infusion pipes, the liquid inlet joint and the liquid outlet joint are respectively provided with a liquid inlet locking movable flap and a liquid outlet one-way movable flap, the outer side of the membrane box casing is provided with an elastic silica gel membrane for extruding the membrane box casing, the outer side of the elastic silica gel membrane is provided with a trigger truncated contact head which is in contact with an elastic membrane, a drainage block is arranged at the back end of the liquid outlet one-way movable flap in the membrane box cavity of the membrane box casing, one side of the drainage block and the inner wall of the membrane box casing form an air trapping chamber, and the other side of the drainage block and the inner wall of the membrane box casing form an air exhaust passage. The infusion apparatus has the advantage that under the action of the trigger truncated contact head triggering the membrane in a reciprocating way, the capacity of the cavity is improved, the liquid inlet locking movable flap and the liquid outlet one-way movable flap are promoted to be opened, the liquid flows into blood vessels in a directional way, and then the liquid infusion process is completed according to the frequency back and forth sequence.
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 is the most general, one of the most effective treatment means in the clinical department of domestic and international medical institutions at different levels.According to the authoritative department investigation, the clinical inpatient of medical institutions more than 90% all need be accepted infusion treatment.And each surgery inpatient almost 100% need be accepted the venous transfusion treatment, and China has 1,300,000,000 populations approximately, according to statistics, on average wants 8 bottles of infusion liquid 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, " Mo Feishi " that conventional liquid infusion method is still also invented before using more than 100 year be infusion model fixedly, and according to statistics, there is family more than 200 in the producer that the whole nation produces " Mo Feishi " transfusion device.The Mo Feishi transfusion device mainly exists patient body position's relative fixed, active receiving to limit, can not accurately control inconveniences such as transfusion speed in clinical use for many years.
Except that traditional " Mo Feishi " transfusion device, monolithic processor controlled Portable Automatic transfusion device Pneumatic automatic transfusion device, pump formula automatic transfusion device also appearred in recent years.Its shortcoming is respectively to be unable to do without drip stand to hang liquid, needs extra power supply and infusion pump, and the infusion pump volume is big, needs driven by power or continuous manual inflation etc.Being difficult in clinical expansion in a word uses.
Utility model patent CN202426961U discloses a kind of disposable bellows transfusion device, can under the effect of trigger, realize the liquid directed flow, though but it has been mentioned in explanation when liquid infusion finishes, automatically start and prevent the air admission blood circulation and prevent that backflow of blood from going into the function of liquid-transport pipe-line, the safety and the effectiveness of infusion process have been guaranteed, but the imagination of having dealt with problems more than just having provided in whole technical proposal does not provide the means of solution in technical scheme.
Summary of the invention
The object of the present invention is to provide and a kind ofly not only can change traditional infusion model, do not need infusion bottle is fixed on and be higher than trouble position all, infusion bottle can be placed on any position and infuse, and realize preventing the air admission blood circulation and prevented that backflow of blood from going into 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 that one has feed liquor, the bellows housing of fluid joint, wherein, feed liquor, the fluid joint is respectively by tube for transfusion and medicinal liquid bottle, syringe needle is connected, and at feed liquor, be separately installed with feed liquor locking flap valve and the unidirectional flap valve of liquid outlet on the fluid joint, the flexible silicon glued membrane that is used to push the bellows housing is installed in the outside of bellows housing, the outside of flexible silicon glued membrane is equipped with and the contacted trigger truncated cone of flexible silicon glued membrane contact, the rear end that the bellows intracavity of described bellows housing is positioned at the unidirectional flap valve of liquid outlet also is provided with the drain shelves, the inwall of drain shelves one side and bellows housing has formed catches air chamber, and the inwall of the opposite side of drain shelves and bellows housing has formed exhaust duct.
Also be provided with the fast-assembling plug on the bellows housing of a described side that is positioned at elastica.
Described medicinal liquid bottle is rack-mount, and also is provided with the fixedly band and the bayonet socket of medicinal liquid bottle on support.
The volume in bellows of the present invention chamber is 10.5 seal chamber, design has feed liquor locking flap valve on container casing, the unidirectional flap valve of fluid, intracavity is provided with drain shelves and exhaust passage, the liquid of infusion depends on the elastica that is provided with on the housing, thereby back and forth touches change cavity volume under the film body effect at trigger truncated cone contact, actuates feed liquor locking flap valve and closes with the unidirectional flap valve of liquid outlet open, make the directed blood vessel that flows into of liquid, come and go order according to frequency and change the liquid infusion process of finishing.
Description of drawings
Fig. 1 is a 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 sketch map;
Fig. 3 is that the present invention prevents the vein functional schematic that backflows.
Wherein, 1 syringe needle; 2 tube for transfusions; 3 flexible silicon glued membranes; 4 fluid joints; The unidirectional flap valve of 5 liquid outlets; 6 bellows housings; 7 bellows chambeies; 8 feed liquors are interrupted; 9 feed liquors locking flap valve; 10 drain shelves; 11 catch air chamber; 12 fast-assembling plugs; 13 trigger truncated cone contacts; 14 medicinal liquids; 15 exhaust ducts; 16 supports; 17 medicinal liquid bottles; 18 bands; 19 dops.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
Referring to Fig. 1,2, the present invention includes one and have 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, be separately installed with feed liquor locking flap valve 9 and the unidirectional flap valve 5 of liquid outlet on 4, the flexible silicon glued membrane 3 that is used to push bellows housing 6 is installed in the outside of bellows housing 6, the outside of flexible silicon glued membrane 3 is equipped with and elastic gum silicon fiml 3 contacted trigger truncated cone contacts 13, be positioned on the bellows housing 6 of a side of flexible silicon glued membrane 3 and also be provided with fast-assembling plug 12, the rear end that is positioned at the unidirectional flap valve 5 of liquid outlet in the bellows chamber 7 of described bellows housing 6 also is provided with drain shelves 10, the inwall of drain shelves 10 1 sides and bellows housing 6 has formed catches air chamber 11, and the inwall of the opposite side of drain shelves 10 and bellows housing 6 has formed exhaust duct 15.Medicinal liquid bottle 17 of the present invention is installed on the support 16, and also is provided with the fixedly band 18 and the bayonet socket 19 of medicinal liquid bottle 17 on support 16.
During use medicinal liquid bottle 17 is installed on the support 16, by the fixing medicinal liquid bottle of band 18 and bayonet socket 19, and then by fast-assembling plug 12 with bellows housing 6 fixing after, by tube for transfusion respectively the medicinal liquid bottle is interrupted with the feed liquor of bellows housing, syringe needle interrupts with fluid and is connected.
Liquid directed flow function of the present invention: as seen from Figure 1, medicinal liquid 14 enters bellows chamber 7, account for the institute 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, and VB equals zero, and at this moment medicinal liquid 14 is squeezed, because medicinal liquid 14 pressurizeds can not dwindle, extruding force passes to the unidirectional flap valve 5 of liquid outlet, and the unidirectional flap valve 5 of liquid outlet breaks away from original position and forms passage, and the pressurized medicinal liquid is discharged bellows chamber 7 and entered in the tube for transfusion 2, produce infusion medicinal liquid power, the flap valve 9 of feed liquor locking meanwhile pushes because of being subjected to the bellows intracavity liquid, and the locking flap valve is close to front cover, and locking liquid can not flow backwards.When trigger truncated cone contact 13 resetted, 3 flexural deformations of flexible silicon glued membrane lost VB=-VB thereupon, produced the vacuum that is equivalent to flexural deformation volume VB in the bellows chamber 7.The unidirectional flap valve 5 of liquid outlet resets and is close to front cover, and feed liquor locking flap valve 9 is opened under suction function, and medicinal liquid enters in the bellows chamber 7, moves in circles with this, and medicinal liquid bottle 17 medicinal liquids just suck the bellows chamber endlessly, inject human vein by the output of bellows chamber through syringe needle 1 again.
Minimum gas identification and lock function: referring to Fig. 2, the present invention is in bellows infusion way, situation in the air admission bellows chamber 7 may appear, because the proportion of air and liquid is 3.2:1000, gas can float rapidly in liquid, and the straight line rising, captures peak, as seen from Figure 2, bellows chamber 7 peaks designs is caught air chamber 11 supplied gas and is held.Catch the gas of air chamber 11 because elastica 3 moves back and forth distortion, the positive and negative alternation of fluid pressure, gas is subjected to the effect of its pressure in the liquid when the malleation of bellows chamber.Because of gas density is that 3.2/1000 liquid body pressure of liquid dwindles gas volume, absorbed 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 the bellows intracavity liquid can not flow to outlet.When the negative pressure of bellows chamber, gas expansion in the liquid has destroyed bellows intracavity vacuum, and feed liquor locking flap valve does not have pressure reduction to be promoted and be in and close, and causes infusion process to interrupt.This moment, unidirectional fluid flap valve was in closed condition, because vein pressure and tube for transfusion overbottom pressure can't discharge, infusion pressure and vein pressure maintain an equal level, and medicinal liquid does not advance, and venous blood can not flow backwards.
The emphasis of this principle is: 1. the proportion of air is the 3.2/1000(come-up 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 is in water cathetus come-up (ordinary circumstance); 5. gas floats to peak (as level indicator) in water.
Prevent the blood reflux function: referring to Fig. 3, when liquid infusion finished, trigger truncated cone contact stopped to move back and forth, and elastica stops vibration.In the normal infusion process, the bellows infusion pressure P notes＞P resistance of ducting+vein pressure P arteries and veins, notes＞(under the effect of directed flow pressure △ P, medicinal liquid injects vein blood vessel along tube for transfusion to P for P resistance+P arteries and veins, P notes-(P resistance+P arteries and veins)=△.
When transfusion finished: infusion flow-rate was zero, resistance of ducting disappearance P resistance=0.Directed flow pressure △ P=0, P notes-P arteries and veins=0, P notes=P arteries and veins under flexible silicon glued membrane distortion tension force (energy storage) effect, under the release action of bellows energy storage, the intrinsic pressure balance of venous blood pressure and tube for transfusion makes blood can not blow back into syringe needle and causes obstruction.
Claims (3)
1. push-in bellows transfusion device, it is characterized in that: comprise that one has 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) be separately installed with feed liquor locking flap valve (9) and the unidirectional flap valve of liquid outlet (5) on, the elastica (3) that is used to push bellows housing (6) is installed in the outside of bellows housing (6), the outside of elastica (3) is equipped with and elastica (3) contacted trigger truncated cone contact (13), the rear end that is positioned at the unidirectional flap valve of liquid outlet (5) in the bellows chamber (7) of described bellows housing (6) also is provided with drain shelves (10), the inwall of drain shelves (10) one sides and bellows housing (6) has formed catches air chamber (11), and the inwall of the opposite side of drain shelves (10) and bellows housing (6) has formed exhaust duct (15).
2. push-in bellows transfusion device according to claim 1 is characterized in that: also be provided with fast-assembling plug (12) on the bellows housing (6) of a described side that is positioned at elastica (3).
3. push-in bellows transfusion device according to claim 1 is characterized in that: described medicinal liquid bottle (17) is installed on the support (16), and also is provided with the fixedly band (18) and the bayonet socket (19) of medicinal liquid bottle (17) on support (16).
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 true CN103212132A (en) | 2013-07-24 |
| CN103212132B 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 (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86206279U (en) * | 1986-08-28 | 1987-05-20 | 孙连峰 | Intravenous pressure infusion unit |
| 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 |
| 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 |
| CN101977642A (en) * | 2008-01-23 | 2011-02-16 | 德卡产品有限公司 | Pump cassette and methods for use in medical treatment system using a plurality of fluid lines |
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
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 (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86206279U (en) * | 1986-08-28 | 1987-05-20 | 孙连峰 | Intravenous pressure infusion unit |
| 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 |
| 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 |
| CN101977642A (en) * | 2008-01-23 | 2011-02-16 | 德卡产品有限公司 | Pump cassette and methods for use in medical treatment system using a plurality of fluid lines |
| 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103212132B (en) | 2016-01-20 |
| WO2014166156A1 (en) | 2014-10-16 |
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