Disposable infusion pumpTechnical field
The utility model is related to a kind of medical instruments field, more particularly to a kind of disposable infusion pump.
Background technology
Venous transfusion is primarily used to clinical administration at present, carries out venous transfusion using infusion pump, can make medicine in bloodThe concentration timely stablized is kept in slurry, optimal administering effect is reached.Used infusion pump is typically divided currently on the marketFor two kinds：Electronic infusion pump and disposable infusion pump, apply upper in actual market, and disposable infusion pump accounts for big absolutelyNumber.
The Chinese patent of Application No. 200320106824.4 discloses a kind of disposable infusion pump, and it includes concatenationThe pump housing, be transfused the PVC conduits of decoction, check valve and transfusion adapter, it is characterised in that：Check valve and infusion niidl itBetween set up filter and autocontrol medicine adding device, the wherein output end of check valve is connected to control doser, autocontrol medicine adding device bag through filterInclude and inner hollow, end envelope are provided with drug storage liquid capsule, threeway, two-way, micropore glass pipe and check valve threeway, check valve threewayStifled valve rod, the side wall of valve rod is provided with the outside of the through hole run through, through hole and is cased with silicone rubber sleeve, the wherein outlet of threeway and two-wayThrough micropore glass pipe airtight connection, the decoction entrance PVC conduits for connecing filter output end are divided into two-way through threeway, all the way through listMedicine liquid outlet PVC conduits are connected to valve three and constitute continuous infusion medicine liquid channel, and another road connects valve rod through drug storage liquid capsule, finally by listMedicine liquid outlet PVC conduits are imported to valve threeway and constitute automatic control dosing passage, and the present apparatus can control to be transfused the flow velocity of decoction, and energyThe flow velocity of regulation infusion decoction, reaches the purpose of effectively analgesic and safe medication.But the utility model patent Shortcomings itPlace：There is substantial amounts of air in reservoir, PVC conduits and autocontrol medicine adding device, to make decoction be full of in infusion pump system, medical care peopleMember needs the button in constantly pressing flow-control box to drain the air in system, and exhaust efficiency is low, the time is long.
Utility model content
The purpose of this utility model is to provide a kind of disposable infusion pump, and it, which has, improves disposable infusion pumpExhaust efficiency advantage.
Above-mentioned technical purpose of the present utility model technical scheme is that：It is a kind of disposable defeatedNote and reservoir and core bar be provided with pump, including shield, woven hose, flow-control box, the shield, the flow-control box with it is defeatedLiquid pipe is connected, and the one end of the woven hose away from shield is connected with connecting conduit, the connecting conduit and is connected with exhausting box, describedBe provided with dividing plate in exhausting box, the dividing plate exhausting box is divided into pumping chamber and discharge chamber, the pumping chamber provided with piston andThe push rod being fixedly connected with piston, the pumping chamber is connected with connecting conduit, and the connecting conduit is set close to one end of pumping chamberThere is breather cheek valve, the dividing plate is provided with exhaust check valve close to one end of connecting conduit, and the discharge chamber surface is provided with exhaustHole.
By using above-mentioned technical proposal, decoction is entered in reservoir, it is necessary to by the sky in infusion pump system by injectingGas is discharged, and being additionally arranged on woven hose can be with the exhausting box of Quick air-discharge, when pushing away in the pumping chamber that pull-out is connected with connecting conduitBar can be such that the air in infusion pump system is drawn into by breather cheek valve in pumping chamber, when promoting push rod, in pumping chamberAir can from exhaust check valve enter discharge chamber in from steam vent discharge, will not be again introduced into infusion pump system, pass throughThe push-and-pull process being repeated several times can rapidly drain the air in infusion pump system, and avoid by pressing flow control repeatedlyBox processed excludes the operation of air, reduces the damage to flow-control box.
The utility model is further arranged to：The bottom of the pumping chamber is provided with buckle, the front end of the piston be provided withThe groove that buckle is fastened.
By using above-mentioned technical proposal, after the air in infusion pump system is drained, medical personnel slightly firmly willGroove on push rod forward bolt piston is sticked into buckle, and push rod is fixed in pumping chamber, it is to avoid made during infusion pump useInto the movement of push rod.
The utility model is further arranged to：The one end of the push rod away from piston is provided with rounded tabs, the circular gearPiece is provided with safety plate, and the safety plate two ends are equipped with salient point, by convex between the safety plate and rounded tabs and exhausting boxPoint connection.
By using above-mentioned technical proposal, push rod is fixed on housing by safety plate, can avoid infusion pump before useThe contact area occurred between the salient point and rounded tabs and exhausting box on slip of the push rod in exhausting box, safety plate is small, canSo that easily safety plate to be removed.
The utility model is further arranged to：The steam vent is uniformly arranged in discharge chamber surface.
By using above-mentioned technical proposal, steam vent effectively increase air discharge speed, and can pumping mistakeCheng Zhong, exhausting box can prevent decoction from splashing.
The utility model is further arranged to：The connecting conduit is provided with water proof filter close to one end of woven hose.
By using above-mentioned technical proposal, water proof filter can be avoided in pumping process, bring decoction into pumping chamberIn.
The utility model is further arranged to：The connecting conduit is provided with shutoff valve.
By using above-mentioned technical proposal, after air is drained, shutoff valve is screwed, prevents woven hose Chinese medicine liquid from entering pumpingAir in chamber and discharge chamber enters woven hose.
The utility model is further arranged to：The flow-control box is additionally provided with anther sac, current limiting tube and one section of woven hose, limitFlow tube is connected between the import of the leading portion of woven hose and anther sac, and the outlet of anther sac is connected by control button with woven hose back segment.
By using above-mentioned technical proposal, when slow transfusion is without Principle of Pain is solved, patient can press flow controlBox processed, makes the decoction in anther sac disposably be rapidly injected in patient body, increases dose to ease pain, and meets sick Man's Demands.
The utility model is further arranged to：The automatic control doser is provided with additional drug delivery port, the additional drug delivery portConnected with the woven hose in flow-control box, the additional drug delivery port is provided with additional drug delivery port helmet.
By using above-mentioned technical proposal, medical personnel can carry out decoction use to patient again by additional drug delivery portThe addition of amount, dosage is neatly increased in appropriate scope, meets the actual conditions of different patients.
The utility model is further arranged to：The one end of the woven hose away from shield is provided with filter.
By using above-mentioned technical proposal, decoction passes through filter, into patient body, can avoid in infusion pump systemThe debris contained is damaged into human body.
In summary, the utility model has the advantages that：
The utility model effectively increases the exhaust efficiency of infusion pump, and great convenience is provided to medical personnel, reduces diseasePeople's stand-by period；While continuous micro is administered, patient can independently add dosage according to own situation, mitigate the pain of patientIt is bitter.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment 1 of the present utility model；
Fig. 2 is the structural representation of exhausting box in embodiment 1；
Fig. 3 is the structural representation of exhausting box in embodiment 2 of the present utility model；
Fig. 4 is the internal structure schematic diagram of exhausting box in embodiment 2；
Fig. 5 is the structural representation of embodiment 3；
Fig. 6 is the internal structure schematic diagram of flow-control box in embodiment 3.
In figure, 1, shield；11st, reservoir；12nd, core bar；2nd, woven hose；21st, filling opening；211st, filling opening helmet；22nd, onlyStream folder；23rd, filter；24th, fluid infusion port；3rd, flow-control box；31st, anther sac；32nd, current limiting tube；33rd, control button；34th, it is additionalDrug delivery port；341st, additional drug delivery port helmet；4th, connecting conduit；41st, water proof filter；42nd, breather cheek valve；43rd, shutoff valve；5th, exhausting box；51st, pumping chamber；511st, buckle；512nd, piston；513rd, groove；514th, push rod；515th, rounded tabs；52nd, it is ventedChamber；521st, steam vent；53rd, dividing plate；531st, exhaust check valve；54th, safety plate；541st, salient point.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment 1：A kind of disposable infusion pump, as shown in figure 1, including shield 1, reservoir 11, core bar 12, transfusionPipe 2, flow-control box 3 and fluid infusion port 24, reservoir 11 are enclosed on outside core bar 12, and reservoir 11 is in shield 1, in core bar 12Provided with medicine liquid channel, medicine liquid channel is connected with woven hose 2, and woven hose 2 is provided with filling opening 21, filling opening close to one end of shield 1It is connected with 21 by screw thread on dosing mouth helmet 211, woven hose 2 and is provided with connecting conduit 4 in one end away from shield 1,Exhausting box 5 is connected with connecting conduit 4.
Reservoir 11 is medical silica-gel material, and with preferable elasticity, medical personnel are from filling opening by the decoction preparedInjection is flowed into reservoir 11, and decoction expands reservoir 11, reservoir 11 is kept certain pressure, and decoction is from reservoir 11The medicine liquid channel of internal core rod 12 flows into woven hose 2, flows through flow-control box 3, exhausting box and fluid infusion port along woven hose 2, entersEnter human body.
As shown in Fig. 2 be provided with dividing plate 53 in exhausting box 5,5 points of exhausting box is pumping chamber 51 and discharge chamber 52 by dividing plate 53,The surface of discharge chamber 52 uniformly arranges steam vent 521, and pumping chamber 51 is connected with connecting conduit 4, and connecting conduit 4 is close to pumping chamber51 one end is provided with breather cheek valve 42, and dividing plate 53 is provided with exhaust check valve 531, pumping chamber 51 close to one end of connecting conduit 4In provided with piston 512 and the push rod 514 that is fixedly connected with piston 512, the one end of push rod 514 away from piston 512 is provided with circleCatch 515.
In the present embodiment, when pulling out the push rod 514 in pumping chamber 51, negative pressure is formed in pumping chamber 51, by infusion pumpAir in system is rapidly pumped into pumping chamber 51, and the environment of negative pressure promotes decoction to flow quickly through and be full of each of infusion pumpIn part；During pumping, due to being provided that exhaust check valve 531 on dividing plate 53, so the exhaust with atmosphereAir in chamber 52 can not be entered in pumping chamber 51 by exhaust check valve 531, while original air is from pushing away in pumping chamber 51Discharged in the gap of bar 514 and exhausting box 5.
When promoting push rod 514, the pressure increase in pumping chamber 51, but due to the connecting conduit 4 connected with pumping chamber 51On be provided that breather cheek valve 42, air can not be reentered in infusion pump system by breather cheek valve 42, so taking outAir in air cavity 51 can only be discharged from the exhaust check valve 531 on dividing plate 52.Can be fast by the push-and-pull process being repeated several timesThe air in infusion pump system is drained fastly, it is to avoid press the exhaust process that flow-control box 3 carries out the long period repeatedly, reduceDamage to flow-control box 3.
Piston 512 can be very good to fit with the inwall of pumping chamber 51 using the quality of rubber materials for meeting medical requirement, improveSealing property, it is ensured that the gas of extraction both is from infusion pump system, due to pumping during decoction also can be quick therewithFlowing, discharge chamber 52 can effectively prevent decoction from sputtering to come, and medical personnel are damaged.
Embodiment 2：A kind of disposable infusion pump, is with the difference of embodiment 1, as shown in figure 3, connection is ledPipe 4 is provided with water proof filter 41 close to one end of woven hose 2, and rounded tabs 515 are provided with safety plate 54, and the two ends of safety plate 54 are all provided withThere is salient point 541, safety plate 54 is connected with rounded tabs 515 and exhausting box 5 respectively by salient point 541.
During pumping, decoction can be also drawn into exhausting box 5 therewith, in connecting conduit 4 close to the one of woven hose 2End sets water proof filter 41, makes decoction can not be by water proof filter 41, and the air in system can pass through, and effectively subtractThe unnecessary loss of few decoction caused in exhaust process.
Push rod 514 is fixed on box body by safety plate 54, can avoid infusion pump using the preceding cunning for occurring push rod 514Dynamic, when infusion pump is needed to use, the contact area of salient point 541 and exhausting box 5 and rounded tabs 515 is small, so onlySafety plate 54 is rotated, salient point 541 can depart from rounded tabs 515 and exhausting box 5, safety plate 54 is dropped, and push rod 514 is inCan activity state.
As shown in figure 4, the bottom of pumping chamber 51 is provided with buckle 511, buckle 511 is trapezium structure, and buckle 511 is close to connectionThe diameter of the one end of conduit 4 is more than the other end diameter of buckle 511；The front end of piston 512 is provided with the groove fastened with buckle 511513, cavity shape and the trapezoidal of buckle 511 of groove 513 match, and the depth of groove 513 is equal to the height of buckle 511.It is livingPlug 512 is made of flexible medical grade rubber material, groove 513 is had certain pliability, when in infusion pump systemAfter air is drained, medical personnel slightly enforce rounded tabs 515, groove 513 are fastened in buckle 511, due to recessedProtuberance at the opening of groove 513 is fastened on the bottom of buckle 511, and push rod 514 is locked in the bottom of pumping chamber 51, it is to avoidPush rod 514 moves back and forth in pumping chamber 51 during transfusion.
Embodiment 3：A kind of disposable infusion pump, is with the difference of embodiment 2, as shown in figure 5, woven hose2 are provided with flow-stopping clip 22 close to one end of shield 1, and woven hose 2 is provided with filter 23, connecting conduit close to one end of output port 244 are provided with shutoff valve 43.
Medical personnel close flow-stopping clip 22 when decoction is injected by drug delivery port 21, can prevent decoction towards defeatedThe direction flowing of liquid pipe port 24, decoction is all flowed into inside reservoir 11 by core bar 12, decoction all injects reservoirFlow-stopping clip 22 is opened after in 11, decoction is that may flow into woven hose 2；Filter 23 can be filtered to decoction, it is to avoid infusionThe debris contained in pumping system enters human body, and human body is damaged.
Drain after air, screw shutoff valve 43, isolate connecting conduit 4 and pumping chamber 51, in water proof filter 41On the basis of, prevent the Chinese medicine liquid of woven hose 2 from entering pumping chamber 51, while preventing the air in discharge chamber 52 from entering defeated from pumping chamber 51In liquid pipe 2.
As shown in fig. 6, being additionally provided with anther sac 31, current limiting tube 32 and one section of woven hose 2 in flow-control box 3, current limiting tube 32 connectsBetween the import for being connected on the leading portion of woven hose 2 and anther sac 31, the outlet of anther sac 31 passes through control button 33 and the back segment phase of woven hose 2Even, flow-control box 3 is provided with additional drug delivery port 34, and additional drug delivery port 34 is connected with the woven hose 2 in flow-control box 3, additionalDrug delivery port 34 is provided with additional drug delivery port helmet 341.
In slowly infusion process, if patient still feels hurt like hell, flow-control box 3, anther sac 31 can be pressedIt is squeezed, opens control button 33, the decoction in anther sac 31 is disposably rapidly injected in patient body, increase dose comes townBitterly.The volume of anther sac 31 is set to the rational numerical value of fixation, and such as volume is 0.5mL, and due to the limitation of current limiting tube 32,Anther sac 31 needs the sufficiently long time to be full of, for example, need 15 minutes full of anther sac 31, i.e., controlled in patient by down-offAfter box 3, flow-control box 3 was pressed again within 15 minutes, there will not be decoction outflow.
Simultaneously when increase medicine in addition is needed, medical personnel can outward winding additional drug delivery port helmet 341, with injectionDevice injects decoction by additional drug delivery port 34, decoction consumption is added again to patient, the need for meeting different patients.
Specific implementation process：Medical personnel close flow-stopping clip 22, filling opening helmet 211 are outwarded winding, by the decoction nothing preparedBacterium syringe is injected in silica gel reservoir 11 by filtering head injection by filling opening 21.After injection terminates, filtering head is extracted,Screw on filling opening helmet 211.Shield 1 is fixed on one's sick bed, safety plate 54 is removed, flow-stopping clip 22 is opened, outwards winding stop valveAir in door 43, pull-out push rod 514, infusion pump enters from breather cheek valve 42 is pumped into pumping chamber 51；When propulsion push rod 514,Because connecting conduit 4 is provided with breather cheek valve 42, so the air in pumping chamber 51 can not be reentered in woven hose 2, andEnter discharge chamber 52 from the exhaust check valve 531 on dividing plate 53, then steam vent 521 on discharge chamber 52 is discharged.Due to connectionConduit 4 is provided with water proof filter 41 close to one end of woven hose 2, and decoction can not pass through, so push-and-pull push rod 514 back and forth, drivesPiston 512 is back and forth evacuated, and causes the negative pressure that appropriateness is formed in infusion pump, the air in system can be drained rapidly, makes decoction fastSpeed is full of system.
After air is drained, push rod 514 is slightly firmly shifted onto to the bottom of pumping chamber 51, makes the groove 513 of the front end of piston 512Fastened with the buckle 511 of the bottom of pumping chamber 51, push rod 514 is locked in the bottom of pumping chamber 51, screw shutoff valve 43, ensuredThe Chinese medicine liquid of woven hose 2 cannot be introduced into pumping chamber 51, while preventing air from entering from pumping chamber 51 in woven hose 2.
Syringe needle is plugged in fluid infusion port 24, before injection operation through syringe needle make emptying disposal, during transfusion decoction with 1ml,2mL, 4mL or 8mL speed hourly are slowly inputted in patient body, when patient feels hurt like hell, can be pressedFlow-control box 3, makes the decoction in anther sac 31 disposably be rapidly injected in patient body.In needs in addition increase medicineWait, medical personnel can outward winding the addition drug delivery port helmet 341 in flow-control box 3, with syringe by additional drug delivery port 34,Decoction consumption is added again, the need for meeting different patients.
This specific embodiment is only to explain of the present utility model, and it is not to limitation of the present utility model, abilityField technique personnel can make the modification without creative contribution to the present embodiment as needed after this specification is read, butAs long as all being protected in right of the present utility model by Patent Law.