CN203598308U - Anti-backflow precision filtering infusion apparatus - Google Patents
Anti-backflow precision filtering infusion apparatus Download PDFInfo
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- CN203598308U CN203598308U CN201320762446.9U CN201320762446U CN203598308U CN 203598308 U CN203598308 U CN 203598308U CN 201320762446 U CN201320762446 U CN 201320762446U CN 203598308 U CN203598308 U CN 203598308U
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Abstract
An anti-backflow precision filtering infusion apparatus is provided with a self-exhausting dripping chamber, a speed regulator, a catheter, an anti-bubble precision filter, an anti-backflow connecting valve and a needle tube, wherein the self-exhausting dripping chamber, the anti-bubble precision filter, the anti-backflow connecting valve and the needle tube are sequentially communicated through the catheter, and the speed regulator is arranged on the portion, between the self-exhausting dripping chamber and the anti-bubble precision filter, of the catheter; the anti-bubble precision filter is installed in the position, with the distance to the output end of a connecting base of the needle tube within the range of 150 mm, of the catheter. The anti-backflow precision filtering infusion apparatus is capable of precision filtering and capable of effectively filtering medicine liquid particles larger than 5 microns in the infusion process, removing air generated in the infusion process and effectively preventing the blood return phenomenon, infusion can be automatically stopped after conveying of medicine liquid is completed, the blood return phenomenon can be avoided in the infusion process, the blood return phenomenon is avoided in essence, and the anti-backflow precision filtering infusion has the advantages of being high in precision and safe.
Description
Technical field
This utility model relates to technical field of medical instruments, particularly relates 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 made up of dropping funnel, speed regulator, conduit and needle tubing conventionally, and the liquid in medicine bottle or medicated bag enters dropping funnel, is directly delivered to vein blood vessel by conduit.
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 cannot continue transfusion due to air embolism, 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 risk such as venous thrombosis, other blood vessel embolisms causing for blood coagulation clot and nosocomial infection, septicemia, remains and cannot tackle the problem at its root.
Therefore,, for prior art deficiency, provide a kind of anti-return precision filter infusion set very necessary to overcome prior art deficiency.
Summary of the invention
The purpose of this utility model 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 utility model realizes by following technical measures.
A kind of 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 be communicated with by described conduit successively from aerofluxus dropping funnel, described Anti-bubble accurate filter and described anti-return connection valve and described needle tubing, described speed regulator is arranged at described conduit, described speed regulator described 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.
Above-mentionedly be provided with dropping funnel body, installation cover and puncture joint from aerofluxus dropping funnel, 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; Enter liquid guiding cavity and inputed in described the first cavity by described liquid-through hole from the liquid of described bottom input input.
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 only fluid column, and described only fluid column assembles with described the first groove face, 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 being simultaneously assemblied in described anti-return 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 cavity, 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 fixing with described output mechanism the outer cornice, the first boss and the interior cornice that assemble, 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 be provided with for outer lug boss, the first groove and the inner convex platform of described input mechanism assembling, 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 utility model, is provided with from aerofluxus dropping funnel, speed regulator, conduit, Anti-bubble accurate filter, anti-return connection valve and needle tubing; Describedly be communicated with by described conduit successively from aerofluxus dropping funnel, described Anti-bubble accurate filter and described anti-return connection valve and described needle tubing, 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 utility model is described in further detail to utilize accompanying drawing, but content in accompanying drawing does not form any restriction of the present utility model.
Fig. 1 is the structural representation of a kind of anti-return precision filter infusion set of the present utility model.
Fig. 2 is the structural representation from aerofluxus dropping funnel of a kind of anti-return precision filter infusion set of this utility model.
Fig. 3 is the decomposition texture schematic diagram from aerofluxus dropping funnel of a kind of anti-return precision filter infusion set of this utility model.
Fig. 4 is the cross-sectional view from aerofluxus dropping funnel of a kind of anti-return precision filter infusion set of this utility model.
Fig. 5 is the structural representation in the time that aerofluxus dropping funnel removes over cap of a kind of anti-return precision filter infusion set of this utility model.
Fig. 6 is the structural representation of the Anti-bubble accurate filter of a kind of anti-return precision filter infusion set of this utility model.
Fig. 7 is the cutaway view of the Anti-bubble accurate filter of a kind of anti-return precision filter infusion set of this utility model.
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 this utility model.
Fig. 9 is the decomposing schematic representation of the Anti-bubble accurate filter of a kind of anti-return precision filter infusion set of this utility model.
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 this utility model.
Figure 11 is another decomposing schematic representation of the Anti-bubble accurate filter of a kind of anti-return precision filter infusion set of this utility model.
Figure 12 is the structural representation of the blood return prevention connection valve of a kind of anti-return precision filter infusion set of this utility model.
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 this utility model.
Figure 14 is the upward view of the input mechanism of a kind of blood return prevention connection valve of the present utility model.
Figure 15 is the top view of a kind of blood return prevention connection valve of the present utility model.
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,
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 connection valve 500,
Anti-return stop fluid cushion sheet 5200,
The first groove face 5210, through hole 5220, the second groove face 5230,
Needle tubing 600,
Connection Block 700.
The specific embodiment
With the following Examples this utility model is further described.
A kind of 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.
Be communicated with by conduit 200 successively from aerofluxus dropping funnel 100, Anti-bubble accurate filter 400, anti-return connection valve 500 and needle tubing 600, 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, from aerofluxus dropping funnel, as shown in Figures 2 to 5, be 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.Should also be provided with over cap 1400 from aerofluxus dropping funnel, and protect this to be sheathed on puncture joint 1300 puncture joint 1300 is protected.
It should be noted that, in the present embodiment, describing the orientation adopting is take the input from aerofluxus dropping funnel as top, take the outfan from aerofluxus dropping funnel as 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 to 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.
Should be from aerofluxus dropping funnel, its use procedure is such, to insert in infusion bottle or transfusion bag from the puncture joint 1300 of aerofluxus dropping funnel, under the effect of height pressure reduction, gas in dropping funnel body 1100 is automatically expelled to airway 1330 from aerofluxus post 1210 and is finally discharged by air vent 1340, 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.Should, from aerofluxus dropping funnel, there is the feature simply and easily that uses.
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, liquid in the first cavity 4400 also can will make to pass through by liquid through the filtration in intermediate layer 4300, 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.The liquid of inputting from bottom 4100 inputs 4110 enters liquid guiding cavity 4600 and is 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, when use, the input 4110 of bottom 4100 can be connected with the pipe of carrying medicinal liquid, the input 4110 that medicinal liquid is delivered to bottom 4100 enters liquid guiding cavity 4600, enter the first cavity 4400 through liquid-through hole 4220, 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 exports through outfan.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 stop fluid cushion sheet 5200 be provided with for the first groove face 5210 that only fluid column matches, only fluid column is assemblied in the first groove face 5210, anti-return stops through hole 5220 that fluid cushion sheet 5200 arranges and is positioned at the center of 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 fluid cushion sheet 5200 and is generally the soft thin slice of silica gel piece or sheet or other material.In the time of 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, due to the effect of pressure differential, medicinal liquid will stop fluid cushion sheet 5200 and produces pressure stopping with anti-return anti-return that liquid device matches, flows out and enters anti-return and stop the through hole 5220 inflow output mechanisms 5300 that fluid cushion sheet 5200 arranges 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.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 anti-return is stopped fluid cushion sheet 5200 by fluid column 5130 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 in the time of 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 be set to more than two with connector 5140.
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 cavity, 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.When 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 hole 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, is delivered to vein blood vessel by output mechanism 5300.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 when use is connected with medicine bottle or medicated bag, due to can be rapidly by the Bas Discharged in dropping funnel from aerofluxus dropping funnel 100, do not need extruding fast medicinal liquid to be injected to correct position in dropping funnel, there is feature easy to use.Enter Anti-bubble accurate filter 400 from the medicinal liquid flowing out from aerofluxus dropping funnel 100 through conduit 200, 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.Apart from control, carry out secondary filter by entering the medicinal liquid of infusing in needle tubing by this, 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 utility model also has feature simple in structure, cost is low, easy to use.
Finally should be noted that; above embodiment is the restriction for the technical solution of the utility model is described but not to this utility model protection domain only; although this utility model 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 the technical solution of the utility model, and not depart from essence and the scope of technical solutions of the utility model.
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 be communicated with by described conduit successively from aerofluxus dropping funnel, described Anti-bubble accurate filter and described anti-return connection valve and described needle tubing, described speed regulator is arranged at described conduit, described speed regulator described 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: be describedly provided with dropping funnel body, installation cover and puncture joint from aerofluxus dropping funnel, 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; Enter liquid guiding cavity and inputed in described the first cavity by described liquid-through hole from the liquid of described bottom input input.
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 6, 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 only fluid column, and described only fluid column assembles with described the first groove face, 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 being simultaneously assemblied in described anti-return 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 9, is characterized in that: described anti-return stops liquid device and is also provided with diversion column, and described diversion column is fixedly installed on the internal face of cavity, 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 fixing with described output mechanism the outer cornice, the first boss and the interior cornice that assemble, 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 be provided with for outer lug boss, the first groove and the inner convex platform of described input mechanism assembling, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320762446.9U CN203598308U (en) | 2013-11-28 | 2013-11-28 | Anti-backflow precision filtering infusion apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320762446.9U CN203598308U (en) | 2013-11-28 | 2013-11-28 | Anti-backflow precision filtering infusion apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN203598308U true CN203598308U (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320762446.9U Expired - Fee Related CN203598308U (en) | 2013-11-28 | 2013-11-28 | Anti-backflow precision filtering infusion apparatus |
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| Country | Link |
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| CN (1) | CN203598308U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103599581A (en) * | 2013-11-28 | 2014-02-26 | 电白县康尔美生物科技有限公司 | Backflow-preventing precise-filtering infusion apparatus |
| CN104888298A (en) * | 2015-03-24 | 2015-09-09 | 广州友安医疗科技有限公司 | Blood return prevention device and medical infusion apparatus |
| CN113368337A (en) * | 2021-07-14 | 2021-09-10 | 中国人民解放军总医院海南医院 | Device for delivering chemotherapeutic drugs |
-
2013
- 2013-11-28 CN CN201320762446.9U patent/CN203598308U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103599581A (en) * | 2013-11-28 | 2014-02-26 | 电白县康尔美生物科技有限公司 | Backflow-preventing precise-filtering infusion apparatus |
| CN103599581B (en) * | 2013-11-28 | 2016-01-20 | 电白县康尔美生物科技有限公司 | A kind of anti-return precision filter infusion set |
| CN104888298A (en) * | 2015-03-24 | 2015-09-09 | 广州友安医疗科技有限公司 | Blood return prevention device and medical infusion apparatus |
| WO2016150319A2 (en) * | 2015-03-24 | 2016-09-29 | 广州友安医疗科技有限公司 | Device preventing backflow of blood, and medical infusion device |
| WO2016150319A3 (en) * | 2015-03-24 | 2017-02-09 | 广州友安医疗科技有限公司 | Device preventing backflow of blood, and medical infusion device |
| CN113368337A (en) * | 2021-07-14 | 2021-09-10 | 中国人民解放军总医院海南医院 | Device for delivering chemotherapeutic drugs |
| CN113368337B (en) * | 2021-07-14 | 2022-08-02 | 中国人民解放军总医院海南医院 | Device for delivering chemotherapeutic drugs |
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