CN103599581A - Backflow-preventing precise-filtering infusion apparatus - Google Patents
Backflow-preventing precise-filtering infusion apparatus Download PDFInfo
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- CN103599581A CN103599581A CN201310614469.XA CN201310614469A CN103599581A CN 103599581 A CN103599581 A CN 103599581A CN 201310614469 A CN201310614469 A CN 201310614469A CN 103599581 A CN103599581 A CN 103599581A
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Abstract
A backflow-preventing precise-filtering infusion apparatus comprises a self-exhausting dripping bucket, a speed adjuster, a guide pipe, a bubble-preventing precise filter, a backflow-preventing connecting valve and a needle pipe. The self-exhausting dripping bucket, the bubble-preventing precise filter, the backflow-preventing connecting valve and the needle pipe are sequentially communicated through the guide pipe, the speed adjuster is arranged on the guide pipe between the self-exhausting dripping bucket and the bubble-preventing precise filter, and the bubble-preventing precise filter is mounted on the guide pipe within a 150mm range distant from a connecting seat output end of the needle pipe. The backflow-preventing precise-filtering infusion apparatus can precisely and effectively filter particles, larger than 5 micrometers, in liquid medicine in the process of infusion, can remove air generated in the process of infusion, can effectively prevent blood returning, can automatically stop infusion after liquid medicine delivery is completed, can avoid blood returning fundamentally and has the advantages of high precision and safety.
Description
Technical field
The present invention relates to technical field of medical instruments, particularly relate to a kind of anti-return precision filter infusion set.
Background technology
Transfusion device is one of conventional medical supplies of medical field intravenous injection, is usually used in clinically disease treatment and severe disease and rescues.
In prior art, transfusion device is comprised of dropping funnel, speed regulator, conduit and needle tubing conventionally, and the liquid in medicine bottle or medicated bag enters dropping funnel, by conduit, is directly delivered to vein blood vessel.
In infusion process, gas, anti-return blood phenomenon in eliminating medicinal liquid occur most important to infusion safety.If deal with improperly just in case occur that air enters the conduit of dropping funnel bottom, unexpected blood back phenomenon will occur.Blood back phenomenon not only can cause conduit due to air embolism, cannot continue transfusion, even can cause blood coagulation become clot and human body is damaged, and the serious problems such as nosocomial infection, septicemia, in treatment clinical course, how processing this problem and bringing adverse consequences is a stubborn problem always.
And in prior art, for the processing method of the problems referred to above, be all often the mode of remedying that concentrates on medical personnel, as the aerofluxus of quick winding conduit, pull out transfusion needle and carry out the methods such as aerofluxus and process.These operations often bother very much, not only need veteran medical personnel to operate, and easily occur pulling the thunder bolt generations such as unexpected.Thus, not only waste medicinal liquid but also easily cause nosocomial infection, and use such method to process, also be only to have solved the problem that can again infuse, the risk problem of the grievous injuries such as the thrombosis risks such as the venous thrombosis causing for blood coagulation clot, other blood vessel embolisms and nosocomial infection, septicemia, remains and cannot tackle the problem at its root.
Therefore, not enough for prior art, provide a kind of anti-return precision filter infusion set very necessary to overcome prior art deficiency.
Summary of the invention
The object of the invention is to avoid weak point of the prior art and a kind of anti-return precision filter infusion set is provided, this anti-return precision filter infusion set can secondary filter, effectively remove the air in infusion process herb liquid, anti-return blood phenomenon occurs, can automatic stopping infusion after medicinal liquid is carried, can avoid the generation of blood back phenomenon in infusion process, from avoiding in essence the generation of blood back phenomenon, there is high, the safe feature of precision
Above-mentioned purpose of the present invention realizes by following technical measures.
An anti-return precision filter infusion set, is provided with from aerofluxus dropping funnel, speed regulator, conduit, Anti-bubble accurate filter, anti-return connection valve and needle tubing;
Describedly from aerofluxus dropping funnel, described Anti-bubble accurate filter and described anti-return connection valve and described needle tubing, be communicated with successively by described conduit, described speed regulator is arranged at described described conduit between aerofluxus dropping funnel and described Anti-bubble accurate filter;
Described Anti-bubble accurate filter is installed within the scope of the distance input 150mm of described needle tubing.
Above-mentioned automatic vent dropping funnel is provided with dropping funnel body, installation cover and puncture joint, and described installation cover is fixedly assemblied in described dropping funnel body, and described puncture joint is fixedly assemblied in the one side away from described dropping funnel body of described installation cover;
Installation cover has been equipped with aerofluxus post and lower fluid column, and described aerofluxus post and described lower fluid column are assemblied in described dropping funnel body interior, and the air inlet of described aerofluxus post is higher than the leakage fluid dram of described lower fluid column;
Described puncture joint is provided with catheter, airway, inlet and air vent, described catheter is communicated with described lower fluid column, described airway is communicated with described aerofluxus post, the top of described feed tube is provided with inlet, the end of described airway is provided with air vent, and described air vent is higher than described inlet.
Above-mentioned catheter casing is located at described airway, and described airway passes described catheter and is connected with puncturing head;
Described installation cover is provided with the first guiding groove, and described first guiding groove one end is connected with the lower end of described airway, and the other end of described the first guiding groove is connected with the upper end of described aerofluxus post;
Described installation cover is provided with the second guiding groove, and described second guiding groove one end is connected with the lower end of described lower liquid pipe, and the other end of described the second guiding groove is connected with the upper end of described lower fluid column.
Preferably, described Anti-bubble accurate filter is provided with bottom, protecgulum and intermediate layer;
Described intermediate layer be set to gas can not by and the logical liquid membrane of choke that liquid can pass through, described protecgulum is provided with exhaust apparatus, the fixing assembling of described bottom and described protecgulum, described intermediate layer sandwiched is fixed between described bottom and described protecgulum, the space forming between described protecgulum and described intermediate layer is the first cavity, and the space forming between described intermediate layer and described bottom is the second cavity;
The liquid entering from described bottom input is transported to described the first cavity, and the gas in the first cavity in liquid is discharged by described exhaust apparatus, and the liquid in the first cavity enters the second cavity by intermediate layer, and is discharged by the outlet side of the second cavity.
Above-mentioned bottom is provided with groove, and described groove is communicated with the input of described bottom, and described protecgulum is provided with liquid-through hole;
Described liquid-through hole is corresponding with described groove location, and the space that the liquid-through hole position of the groove location of described bottom and described protecgulum forms is liquid guiding cavity; From the liquid of described bottom input input, enter liquid guiding cavity and inputed in described the first cavity by described liquid-through hole.
Above-mentioned exhaust apparatus be provided with pore and can not by and gas and the membrane of can the blocking solution by liquid ventilating;
Described pore is arranged at described protecgulum, and described blocking solution ventilation membrane is fixedly installed on described pore position.
Above-mentioned exhaust apparatus is also provided with fitting recess, and the sealing of described blocking solution ventilation membrane is assemblied in described fitting recess, described pore be arranged at described protecgulum with corresponding position, described fitting recess position.
Preferably, described blood return prevention connection valve is provided with assembly connection input mechanism, output mechanism and anti-return stop fluid cushion sheet;
Described input mechanism is provided with anti-return and stops liquid device, and described anti-return stops liquid device to be provided with cavity, to stop fluid column, connector and intake chute; Described cavity be arranged at described input mechanism first flow liquid outlet position and with described first flow conducting, the internal face of described cavity is fixed in described connector one end, the described connector other end is fixed on described only fluid column, and the gap forming between the internal face of described only fluid column, described cavity and described connector forms described intake chute;
Described anti-return stops fluid cushion sheet and is provided with the first groove face for matching with described fluid stopping post, described fluid stopping post and described the first groove face assembling, and the through hole that described anti-return stops the setting of fluid cushion sheet is positioned at the center of described the first groove face;
Described anti-return stops fluid cushion sheet and is simultaneously assemblied in described anti-return and stops liquid device, described anti-return stops fluid cushion sheet another side and is assemblied in described output mechanism, and described input mechanism and described output mechanism are fixed assembling and described anti-return is stopped to fluid cushion sheet and be located between described input mechanism and described output mechanism.
Above-mentioned only fluid column is set to cylindrical structure, and the interior diameter of described cavity is greater than the interior diameter of described first flow, and the described only diameter of fluid column is less than the interior diameter of described first flow, and the described only diameter of fluid column is greater than the diameter of described through hole.
Above-mentioned anti-return stops liquid device and is also provided with diversion column, and described diversion column is fixedly installed on the internal face of described inner chamber, and described diversion column is between two adjacent connectors;
Described anti-return stops fluid cushion sheet and is provided with the second groove face for matching with described cavity, and described cavity assembles mutually with described the second groove face, and described the second groove face is set to concave surface;
Described input mechanism is provided with department of assembly, and described department of assembly is provided with for outer cornice, the first boss and interior cornice with the fixing assembling of described output mechanism, and described outer cornice and described interior cornice are individually fixed in outside and the inner side of described the first boss;
Described output mechanism is provided with for outer lug boss, the first groove and inner convex platform with described input mechanism assembling, and described outer lug boss and described inner convex platform are individually fixed in outside and the inner side of described the first groove;
Described the first boss is fixedly assemblied in described the first groove, described outer cornice and described outer lug boss butt, described interior cornice and described inner convex platform butt;
The internal diameter of described inner convex platform equates with the external diameter that described anti-return stops fluid cushion sheet.
Anti-return precision filter infusion set of the present invention, is provided with from aerofluxus dropping funnel, speed regulator, conduit, Anti-bubble accurate filter, anti-return connection valve and needle tubing; Describedly from aerofluxus dropping funnel, described Anti-bubble accurate filter and described anti-return connection valve and described needle tubing, be communicated with successively by described conduit, described speed regulator is arranged at described described conduit between aerofluxus dropping funnel and described Anti-bubble accurate filter; Anti-bubble accurate filter is installed on apart from the conduit within the scope of the Connection Block outfan 150mm of needle tubing.The medicinal liquid that this anti-return precision filter infusion set can secondary filter, can effectively filter in infusion process is greater than microgranules more than 5 μ n, and can remove the air that produces in infusion process, and can effectively anti-return blood phenomenon occur, can automatic stopping infusion after medicinal liquid is carried, can avoid the generation of blood back phenomenon in infusion process, from avoiding in essence the generation of blood back phenomenon, there is high, the safe feature of precision.
Accompanying drawing explanation
The invention will be further described to utilize accompanying drawing, but content in accompanying drawing does not form any limitation of the invention.
Fig. 1 is the structural representation of a kind of anti-return precision filter infusion set of the present invention.
Fig. 2 is the structural representation of the automatic vent dropping funnel of a kind of anti-return precision filter infusion set of the present invention.
Fig. 3 is the decomposition texture schematic diagram of the automatic vent dropping funnel of a kind of anti-return precision filter infusion set of the present invention.
Fig. 4 is the cross-sectional view of the automatic vent dropping funnel of a kind of anti-return precision filter infusion set of the present invention.
Fig. 5 is the structural representation of the automatic vent dropping funnel of a kind of anti-return precision filter infusion set of the present invention while removing over cap.
Fig. 6 is the structural representation of the Anti-bubble accurate filter of a kind of anti-return precision filter infusion set of the present invention.
Fig. 7 is the cutaway view of the Anti-bubble accurate filter of a kind of anti-return precision filter infusion set of the present invention.
Fig. 8 is the cut-away section structural representation of the Anti-bubble accurate filter of a kind of anti-return precision filter infusion set of the present invention.
Fig. 9 is the decomposing schematic representation of the Anti-bubble accurate filter of a kind of anti-return precision filter infusion set of the present invention.
Figure 10 is the decomposing schematic representation of another angle of Anti-bubble accurate filter of a kind of anti-return precision filter infusion set of the present invention.
Figure 11 is another decomposing schematic representation of the Anti-bubble accurate filter of a kind of anti-return precision filter infusion set of the present invention.
Figure 12 is the structural representation of the blood return prevention connection valve of a kind of anti-return precision filter infusion set of the present invention.
Figure 13 is the decomposing schematic representation of the blood return prevention connection valve of a kind of anti-return precision filter infusion set of the present invention.
Figure 14 is the upward view of the input mechanism of a kind of blood return prevention connection valve of the present invention.
Figure 15 is the top view of a kind of blood return prevention connection valve of the present invention.
Figure 16 is Figure 15 " A-A " cutaway view.
Figure 17 is the decomposing schematic representation of Figure 16.
In Fig. 1 to Figure 17, include:
From aerofluxus dropping funnel 100,
Dropping funnel body 1100,
Aerofluxus post 1210, air inlet 1220, lower fluid column 1230, leakage fluid dram 1240,
Puncture joint 1300,
Catheter 1310, inlet 1320, airway 1330, air vent 1340,
Over cap 1400,
From aerofluxus dropping funnel 100, conduit 200, speed regulator 300, needle tubing 600,
Anti-bubble accurate filter 400,
Liquid-through hole 4220,
The first cavity 4400,
The second cavity 4500,
Anti-return stop fluid cushion sheet 5200,
The first groove face 5210, through hole 5220, the second groove face 5230,
The specific embodiment
The invention will be further described with the following Examples.
An anti-return precision filter infusion set, as shown in Figure 1, is provided with from aerofluxus dropping funnel 100, conduit 200, speed regulator 300, Anti-bubble accurate filter 400, anti-return connection valve 500 and needle tubing 600 and Connection Block 700.
From aerofluxus dropping funnel 100, Anti-bubble accurate filter 400, anti-return connection valve 500 and needle tubing 600, be communicated with successively by conduit 200, speed regulator 300 is arranged at the conduit 200 between aerofluxus dropping funnel 100 and Anti-bubble accurate filter 400.The outfan of conduit is provided with Connection Block 700, so as with needle tubing 600 is connected in to conduit 600 by Connection Block 700.
Concrete, automatic vent dropping funnel, as shown in Figures 2 to 5, is provided with dropping funnel body 1100, installation cover 1200 and puncture joint 1300, installation cover 1200 is fixedly assemblied in dropping funnel body 1100, and puncture joint 1300 is fixedly assemblied in the one side away from dropping funnel body 1100 of installation cover 1200.This automatic vent dropping funnel is also provided with over cap 1400, protects this to be sheathed on 1300 pairs of puncture joints 1300 of puncture joint and protects.
It should be noted that, the orientation describe adopting in the present embodiment is that to take the input of automatic vent dropping funnel be top, and the outfan of automatic vent dropping funnel of take is below.If in other occasions, also can select as required, and be not limited to the orientation restriction in the present embodiment.
Puncture joint 1300 is provided with catheter 1310, airway 1330, inlet 1320 and air vent 1340, catheter 1310 is communicated with lower fluid column 1230, airway 1330 is communicated with aerofluxus post 1210, the top of feed tube is provided with inlet 1320, the end of airway 1330 is provided with air vent 1340, and air vent 1340 is higher than inlet 1320.
Concrete, catheter 1310 is sheathed on airway 1330, and airway 1330 passes catheter 1310 and is connected with puncturing head 1350.
Due to the relation of height pressure reduction, the gas in dropping funnel body 1100 can only be discharged by air vent 1340 through airway 1330 by aerofluxus post 1210, and liquid can only from inlet 1320 enter catheter 1310 by fluid column 1230 splash in dropping funnel body 1100.In infusion process, dropping funnel body 1100 is interior can form liquid level, and liquid level can form the sealed chamber of a sealing, can conveniently clean to observe and drip speed, because the liquid level that is related to of pressure differential can not rise to leakage fluid dram 1240 positions.
Concrete, installation cover 1200 is provided with first guiding groove 1360, the first guiding groove 1360 one end and is connected with the lower end of airway 1330, and the other end of the first guiding groove 1360 is connected with the upper end of aerofluxus post 1210.Installation cover 1200 is provided with second guiding groove 1370, the second guiding groove 1370 one end and is connected with the lower end of lower liquid pipe, and the other end of the second guiding groove 1370 is connected with the upper end of lower fluid column 1230.By the first guiding groove 1360 and the second guiding groove 1370, convenient gas and liquid are imported in corresponding runner, have simple in structure, control accurate feature.
Preferably, installation cover 1200, the first guiding groove 1360 and the second guiding groove 1370 can be set to integrated formed structure, have feature easy to prepare, with low cost.Installation cover 1200 also can be set to integrated formed structure with aerofluxus post 1210.Installation cover 1200 also can be set to integrated formed structure with lower fluid column 1230.
This automatic vent dropping funnel, its use procedure is such, the puncture joint of automatic vent dropping funnel 1300 is inserted in infusion bottle or transfusion bag, under the effect of height pressure reduction, gas in dropping funnel body 1100 is automatically expelled to airway 1330 from aerofluxus post 1210 and finally by air vent 1340, is discharged, medicinal liquid in infusion bottle or transfusion bag will enter catheter 1310 by inlet 1320, then splash into dropping funnel body 1100 inside by lower fluid column 1230.Due to can automatic vent, the unnecessary gas in dropping funnel body 1100 can be discharged rapidly, and medicinal liquid can fast and easy be filled into need to observe and drips a fast position, does not need will appoint as in prior art and presses dropping funnel imbibition.And in infusion process, liquid level can form the sealed chamber of a sealing, convenient observation dripped speed.This automatic vent dropping funnel, has the feature simply and easily of using.
Anti-bubble accurate filter, as shown in Fig. 6 to Figure 11, is provided with bottom 4100, protecgulum 4200 and intermediate layer 4300.
The liquid entering from bottom 4100 inputs 4110 is transported to the first cavity 4400, gas in the interior liquid of the first cavity 4400 is discharged by exhaust apparatus, liquid in the first cavity 4400 enters the second cavity 4500 by intermediate layer 4300, and is discharged by the outlet side 4140 of the second cavity 4500.The outlet side 4140 of the second cavity 4500 is the outlet side 4140 of bottom 4100.
This Anti-bubble accurate filter is by being set to intermediate layer 4300 the logical liquid membrane of choke, and can in filtering liquid medicine, be greater than microgranules more than 5 μ n, the gas that makes to enter in the liquid in the first cavity 4400 is merely able to discharged and can not be entered the second cavity 4500 by exhaust apparatus, when entering the second cavity 4500, the liquid in the first cavity 4400 also can through the filtration in intermediate layer 4300, will make to pass through by liquid, therefore can effectively filter the liquid entering in the second cavity 4500, guarantee precision and the granularity of liquid in the second cavity 4500, thereby improve the precision of transfusion, from avoiding in essence the generation of blood back phenomenon.
Concrete, the liquid that enters bottom 4100 inputs 4110 is to import like this first cavity 4400: bottom 4100 is provided with groove 4120, and groove 4120 is communicated with the input 4110 of bottom 4100, and protecgulum 4200 is provided with liquid-through hole 4220.Liquid-through hole 4220 is corresponding with groove 4120 positions, and the space that groove 4120 positions of bottom 4100 and the liquid-through hole of protecgulum 4,200 4220 positions form forms liquid guiding cavity 4600.From the liquid of bottom 4100 input 4110 inputs, enter liquid guiding cavity 4600 and inputed in the first cavity 4400 by liquid-through hole 4220.
Concrete, exhaust apparatus be provided with pore 4211 and can not by and gas and can be by the blocking solution of the liquid membrane 4212 of ventilating.Pore 4211 is arranged at protecgulum 4200, and blocking solution ventilation membrane 4212 is fixedly installed on pore 4211 positions.
For convenient for assembly, exhaust apparatus is also provided with fitting recess 4213, and 4212 sealings of blocking solution ventilation membrane are assemblied in fitting recess 4213, pore 4211 be arranged at protecgulum 4200 with fitting recess 4213 corresponding positions, position.
In the present embodiment, fitting recess 4213 is set to circle, and blocking solution ventilation membrane 4212 is set to circle, and steam vent 4211 is set to three, has feature simple in structure, easy to prepare.
It should be noted that, the shape of fitting recess 4213 and blocking solution ventilation membrane 4212 is not only confined to the circle in the present embodiment, also can arrange flexibly according to actual needs.
It should be noted that, the quantity of steam vent 4211 is set to more than two conventionally, and its quantity is not limited to three in the present embodiment, also can be set to as required other quantity.
This Anti-bubble accurate filter, its work process is such, during use, the input 4110 of bottom 4100 can be connected with carrying the pipe of medicinal liquid, the input 4110 that medicinal liquid is delivered to bottom 4100 enters liquid guiding cavity 4600, through liquid-through hole 4220, enter the first cavity 4400, gas in the first cavity 4400 inner liquid medicines is discharged by pore 4211 by the blocking solution membrane 4212 of ventilating, medicinal liquid enters the second cavity 4500 by the filtration in intermediate layer 4300 by the first cavity 4400, then through outfan, exports.This Anti-bubble accurate filter, can guarantee, by the precision of the liquid of the second cavity 4500 outfan outputs, effectively to avoid the gas in medicinal liquid, thereby improve the precision of transfusion, from avoiding in essence the generation of blood back phenomenon.
Blood return prevention connection valve, as shown in Figure 12 to Figure 17, the input mechanism 5100, output mechanism 5300 and the anti-return that are provided with assembly connection stop fluid cushion sheet 5200.Input mechanism 5100 is connected with liquid-transport pipe-line, and output mechanism 5300 is connected with Shandong taper joint conventionally, thereby inputs to vein blood vessel for medicinal liquid is delivered to syringe needle.
Anti-return stops fluid cushion sheet 5200 and is provided with the first groove face 5210 for matching with fluid stopping post, and fluid stopping post is assemblied in the first groove face 5210, and anti-return stops the center that through hole 5220 that fluid cushion sheet 5200 arranges is positioned at the first groove face 5210.
Anti-return stops fluid cushion sheet 5200, and being simultaneously assemblied in anti-return stops liquid device, anti-return stops fluid cushion sheet 5200 another sides and is assemblied in output mechanism 5300, and input mechanism 5100 and output mechanism 5300 are fixed assembling and anti-return is stopped to fluid cushion sheet 5200 and be located between input mechanism 5100 and output mechanism 5300.
Anti-return stops the soft thin slice that fluid cushion sheet 5200 is generally silica gel piece or sheet or other material.When normal infusion, liquid flow to cavity 5120 positions by first flow 5110, and discharge by intake chute 5150, now, during due to transfusion, medicine bottle or medicated bag are suspended from a high position conventionally, effect due to pressure differential, medicinal liquid will stop fluid cushion sheet 5200 and produces pressure stopping with anti-return anti-return that liquid device matches, thereby make the liquid at intake chute 5150 places to stop gap between fluid cushion sheet 5200 by fluid column 5130 only and anti-return, flows out and enter anti-return and stop the through hole 5220 inflow output mechanisms 5300 that fluid cushion sheet 5200 arranges.Once occur blood backflow because blood pressure is greater than the pressure of medicinal liquid, now, the pressure of blood end will compress anti-return and stop fluid cushion sheet 5200, make anti-return stop the first groove 5320 of fluid cushion sheet 5200 and stop fluid column 5130 close fit, the through hole 5220 that only fluid column 5130 stops fluid cushion sheet 5200 by anti-return closely seals, and medicinal liquid cannot input to input mechanism 5100.Thereby can avoid the generation of blood backflow phenomenon, ensure infusion safety.
Concrete, only fluid column 5130 is set to cylindrical structure, has feature simple in structure, easy to prepare.
Preferably, only the diameter of fluid column 5130 is greater than the diameter of through hole 5220, can guarantee that liquid flows into output mechanism 5300 smoothly when transfusion state, and once occur blood back phenomenon, the effect of pressure makes only fluid column 5130 that through hole 5220 is firmly sealed, and avoids the possibility that needs backflow phenomenon to occur.
The interior diameter of cavity 5120 is greater than the interior diameter of first flow 5110, and only the diameter of fluid column 5130 is less than the interior diameter of first flow 5110.This setting is convenient to medicinal liquid and is entered output mechanism 5300 by input mechanism 5100, and anti-Hemostatic Oral Liquid is back to input mechanism 5100 from output mechanism 5300.
In the present embodiment, connector 5140 is set to three, intake chute 5150 and is also three, and connector 5140 is uniformly distributed in the only outside of fluid column 5130.It should be noted that, the quantity of connector 5140 is not limited to the situation of the present embodiment, also can arrange flexibly according to actual needs.Conventionally with connector 5140, be set to more than two.
For effective transfusion, anti-return stops liquid device and is also provided with diversion column 5160, and diversion column 5160 is fixedly installed on the internal face of inner chamber, and diversion column 5160 is between two adjacent connectors 5140, and diversion column 5160 can effectively guide medicinal liquid.
In the present embodiment, anti-return stops fluid cushion sheet 5200 and is provided with the second groove face 5230 for matching with cavity 5120, and cavity 5120 assembles mutually with the second groove face 5230.During transfusion, medicinal liquid enters through hole 5220 by the space between the second groove face 5230 and cavity 5120, and once occur blood backflow phenomenon, the second groove face 5230 will closely cooperate in cavity 5120, and only fluid column 5130 seals through holes 5220, and backflow phenomenon is from being overcome in essence.
Preferably, the second groove face 5230 is set to concave surface, so that effectively transfusion under transfusion state.
In the present embodiment, assembling in the following way between input mechanism 5100 and output mechanism 5300:
The first boss 5170 is fixedly assemblied in the first groove 5320, outer cornice 5170 and outer lug boss 5310 butts, interior cornice 5190 and inner convex platform 5330 butts.Anti-return stops fluid cushion sheet 5200 and is decided to be the position between inner convex platform 5330 and cavity 5120.
It should be noted that, the mode that is mounted with in the present embodiment between input mechanism 5100 and output mechanism 5300 is just wherein a kind of, is not limited to the situation of the present embodiment in reality, also can be set to other as buckle mode etc.
This blood return prevention connection valve, its use procedure is such, and medicinal liquid carrier pipe is connected with input mechanism 5100, and output mechanism 5300 is connected with syringe needle connection tube.When carrying out medicinal liquid while carrying, because the pressure of medicinal liquid is greater than the pressure of blood vessel, medicinal liquid is delivered to cavity 5120 parts by first flow 5110 and is delivered to intake chute 5150.Because fluid pressure is greater than the pressure of vein blood vessel, medicinal liquid stops fluid cushion sheet 5200 by extruding anti-return and makes anti-return stop the first groove face 5210 of fluid cushion sheet 5200 and only between fluid column 5130, produce certain interval, medicinal liquid enters through hole 5220 by gap and is delivered to output mechanism 5300, by output mechanism 5300, is delivered to vein blood vessel.If just in case while occurring that medicinal liquid is carried situation complete and that do not process in time, the pressure of the about other end of endovascular pressure, the effect of blood pressure will make anti-return stop fluid cushion sheet 5200 and closely be adjacent to cavity 5120, while through hole 5220 is stopped fluid column 5130 and is sealed, blood cannot enter input mechanism 5100, therefore can effectively avoid the generation of blood backflow phenomenon, guarantee infusion safety.
This anti-return precision filter infusion set, puncture joint from aerofluxus dropping funnel 100 during use is connected with medicine bottle or medicated bag, owing to can not needing extruding fast medicinal liquid to be injected to correct position in dropping funnel rapidly by the Bas Discharged in dropping funnel from aerofluxus dropping funnel 100, there is feature easy to use.From the medicinal liquid flowing out from aerofluxus dropping funnel 100, through conduit 200, enter Anti-bubble accurate filter 400, medicinal liquid is discharged by the second cavity outfan after the first cavity Exhaust Gas, due to the filtration of intermediate layer to gas, in the medicinal liquid that can guarantee to be discharged by the second cavity, not containing gas, guarantee infusion safety.Anti-return connection valve 500 is controlled liquid can only flow into needle tubing 600, and blood can not reflux by needle tubing 600, guarantees the generation of blood back phenomenon.
This anti-return precision filter infusion set, by from aerofluxus dropping funnel 100, Anti-bubble accurate filter 400 and anti-return connection valve 500, really secondary filter, the medicinal liquid that can effectively filter in infusion process are greater than microgranules more than 5 μ n, and can effectively remove the air in infusion process herb liquid, the generation of anti-return blood phenomenon, can automatic stopping infusion after medicinal liquid is carried, can avoid the generation of blood back phenomenon in infusion process, from avoiding in essence the generation of blood back phenomenon, there is high, the safe feature of precision.
Anti-bubble accurate filter 400 is installed on apart from the conduit 600 within the scope of the Connection Block 700 outfan 150mm of needle tubing 600.By this, apart from control, by entering the medicinal liquid of infusing in needle tubing, carry out secondary filter, guarantee to input and in the medicinal liquid in human vas, do not contain gas.Because anti-return connection valve is compared with the more close needle tubing of Anti-bubble accurate filter, can stop blood backflow.
In addition, anti-return precision filter infusion set of the present invention also has feature simple in structure, cost is low, easy to use.
Finally should be noted that; above embodiment is only for illustrating technical scheme of the present invention but not limiting the scope of the invention; although the present invention is explained in detail with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement technical scheme of the present invention, and not depart from essence and the scope of technical solution of the present invention.
Claims (10)
1. an anti-return precision filter infusion set, is characterized in that: be provided with from aerofluxus dropping funnel, speed regulator, conduit, Anti-bubble accurate filter, anti-return connection valve and needle tubing;
Describedly from aerofluxus dropping funnel, described Anti-bubble accurate filter and described anti-return connection valve and described needle tubing, be communicated with successively by described conduit, described speed regulator is arranged at described described conduit between aerofluxus dropping funnel and described Anti-bubble accurate filter;
Described Anti-bubble accurate filter is installed on the described conduit within the scope of the distance Connection Block outfan 150mm of described needle tubing.
2. according to anti-return precision filter infusion set claimed in claim 1, it is characterized in that: described automatic vent dropping funnel is provided with dropping funnel body, installation cover and puncture joint, described installation cover is fixedly assemblied in described dropping funnel body, and described puncture joint is fixedly assemblied in the one side away from described dropping funnel body of described installation cover;
Installation cover has been equipped with aerofluxus post and lower fluid column, and described aerofluxus post and described lower fluid column are assemblied in described dropping funnel body interior, and the air inlet of described aerofluxus post is higher than the leakage fluid dram of described lower fluid column;
Described puncture joint is provided with catheter, airway, inlet and air vent, described catheter is communicated with described lower fluid column, described airway is communicated with described aerofluxus post, the top of described feed tube is provided with inlet, the end of described airway is provided with air vent, and described air vent is higher than described inlet.
3. anti-return precision filter infusion set according to claim 2, is characterized in that: described catheter casing is located at described airway, and described airway passes described catheter and is connected with puncturing head;
Described installation cover is provided with the first guiding groove, and described first guiding groove one end is connected with the lower end of described airway, and the other end of described the first guiding groove is connected with the upper end of described aerofluxus post;
Described installation cover is provided with the second guiding groove, and described second guiding groove one end is connected with the lower end of described lower liquid pipe, and the other end of described the second guiding groove is connected with the upper end of described lower fluid column.
4. anti-return precision filter infusion set according to claim 1, is characterized in that:
Described Anti-bubble accurate filter is provided with bottom, protecgulum and intermediate layer;
Described intermediate layer be set to gas can not by and the logical liquid membrane of choke that liquid can pass through, described protecgulum is provided with exhaust apparatus, the fixing assembling of described bottom and described protecgulum, described intermediate layer sandwiched is fixed between described bottom and described protecgulum, the space forming between described protecgulum and described intermediate layer is the first cavity, and the space forming between described intermediate layer and described bottom is the second cavity;
The liquid entering from described bottom input is transported to described the first cavity, and the gas in the first cavity in liquid is discharged by described exhaust apparatus, and the liquid in the first cavity enters the second cavity by intermediate layer, and is discharged by the outlet side of the second cavity.
5. anti-return precision filter infusion set according to claim 4, is characterized in that:
Described bottom is provided with groove, and described groove is communicated with the input of described bottom, and described protecgulum is provided with liquid-through hole;
Described liquid-through hole is corresponding with described groove location, and the space that the liquid-through hole position of the groove location of described bottom and described protecgulum forms is liquid guiding cavity; From the liquid of described bottom input input, enter liquid guiding cavity and inputed in described the first cavity by described liquid-through hole.
6. anti-return precision filter infusion set according to claim 5, is characterized in that:
Described exhaust apparatus be provided with pore and can not by and gas and the membrane of can the blocking solution by liquid ventilating;
Described pore is arranged at described protecgulum, and described blocking solution ventilation membrane is fixedly installed on described pore position.
7. anti-return precision filter infusion set according to claim 5, it is characterized in that: described exhaust apparatus is also provided with fitting recess, the sealing of described blocking solution ventilation membrane is assemblied in described fitting recess, described pore be arranged at described protecgulum with corresponding position, described fitting recess position.
8. anti-return precision filter infusion set according to claim 1, is characterized in that: input mechanism, output mechanism and anti-return that described blood return prevention connection valve is provided with assembly connection stop fluid cushion sheet;
Described input mechanism is provided with anti-return and stops liquid device, and described anti-return stops liquid device to be provided with cavity, to stop fluid column, connector and intake chute; Described cavity be arranged at described input mechanism first flow liquid outlet position and with described first flow conducting, the internal face of described cavity is fixed in described connector one end, the described connector other end is fixed on described only fluid column, and the gap forming between the internal face of described only fluid column, described cavity and described connector forms described intake chute;
Described anti-return stops fluid cushion sheet and is provided with the first groove face for matching with described fluid stopping post, described fluid stopping post and described the first groove face assembling, and the through hole that described anti-return stops the setting of fluid cushion sheet is positioned at the center of described the first groove face;
Described anti-return stops fluid cushion sheet and is simultaneously assemblied in described anti-return and stops liquid device, described anti-return stops fluid cushion sheet another side and is assemblied in described output mechanism, and described input mechanism and described output mechanism are fixed assembling and described anti-return is stopped to fluid cushion sheet and be located between described input mechanism and described output mechanism.
9. anti-return precision filter infusion set according to claim 8, it is characterized in that: described only fluid column is set to cylindrical structure, the interior diameter of described cavity is greater than the interior diameter of described first flow, the described only diameter of fluid column is less than the interior diameter of described first flow, and the described only diameter of fluid column is greater than the diameter of described through hole.
10. anti-return precision filter infusion set according to claim 4, it is characterized in that: described anti-return stops liquid device and is also provided with diversion column, described diversion column is fixedly installed on the internal face of described inner chamber, and described diversion column is between two adjacent connectors;
Described anti-return stops fluid cushion sheet and is provided with the second groove face for matching with described cavity, and described cavity assembles mutually with described the second groove face, and described the second groove face is set to concave surface;
Described input mechanism is provided with department of assembly, and described department of assembly is provided with for outer cornice, the first boss and interior cornice with the fixing assembling of described output mechanism, and described outer cornice and described interior cornice are individually fixed in outside and the inner side of described the first boss;
Described output mechanism is provided with for outer lug boss, the first groove and inner convex platform with described input mechanism assembling, and described outer lug boss and described inner convex platform are individually fixed in outside and the inner side of described the first groove;
Described the first boss is fixedly assemblied in described the first groove, described outer cornice and described outer lug boss butt, described interior cornice and described inner convex platform butt;
The internal diameter of described inner convex platform equates with the external diameter that described anti-return stops fluid cushion sheet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310614469.XA CN103599581B (en) | 2013-11-28 | 2013-11-28 | A kind of anti-return precision filter infusion set |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310614469.XA CN103599581B (en) | 2013-11-28 | 2013-11-28 | A kind of anti-return precision filter infusion set |
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| CN103599581A true CN103599581A (en) | 2014-02-26 |
| CN103599581B CN103599581B (en) | 2016-01-20 |
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| CN201310614469.XA Expired - Fee Related CN103599581B (en) | 2013-11-28 | 2013-11-28 | A kind of anti-return precision filter infusion set |
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| CN106075669A (en) * | 2016-08-16 | 2016-11-09 | 王高松 | Only liquid aerofluxus anti-return liquid medicine filter |
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| Publication number | Publication date |
|---|---|
| CN103599581B (en) | 2016-01-20 |
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