CN1679977A - Infusion method and device with microflow - Google Patents
Infusion method and device with microflow Download PDFInfo
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- CN1679977A CN1679977A CN 200410023901 CN200410023901A CN1679977A CN 1679977 A CN1679977 A CN 1679977A CN 200410023901 CN200410023901 CN 200410023901 CN 200410023901 A CN200410023901 A CN 200410023901A CN 1679977 A CN1679977 A CN 1679977A
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Abstract
A microflow perfusion method and its apparatus feature that a hydroscopic expending body in the casing is used to apply a force to a liquid storage bag for pressing it, and the expanding rate of said hydroscopic expending body and in turn the perfusion rate of liquid storage bag can be controlled by the water-sucking tube which has a selective diameter of its internal channel. After said diameter of internal channel, the flow of perfusion is constant.
Description
Affiliated technical field
The present invention relates to a kind ofly be input to medium in the human body or be passed to apparatus, the especially apparatus of pressure infusion medicinal liquid on the human body.
Background technology
At medical field, many medicinal liquids need be input in the human body continuously or be passed on the human body.For making medicinal liquid carry out infusion with substantially invariable flow, effective measures are to adopt pressure infusion.The pressure infusion pump that motor machine promotes, and by the pressure infusion pump that microprocessor-controlIed motor machine promotes develops very soon, and it is perfect that effect also is tending towards further.But this type of pressure infusion pump configuration complexity costs an arm and a leg, and is difficult to generally promote.Because weight, volume are bigger, also need to be equipped with power supply again, be not easy to that patient is free to carry use when movable.
For addressing the above problem, Chinese invention patent ublic specification of application CN 1218413A discloses number of patent application and has been: 97194572.1, and a kind of technical scheme of " pressing plate pump " by name.It proposes this pump and can be used to from a crushable liquid memory liquid be flowed to patient.This pump has a housing, has a chamber to can be used to admit liquid memory within it; The intracavity of housing has an available first wall that contacts with liquid memory; Also has second wall that can move between the two positions in the housing, primary importance is left first wall one segment distance so that form the chamber of the liquid memory of laying full of liquid betwixt, the second position and first wall are comparatively approaching, form the chamber of the liquid memory of laying flattening betwixt; With a spring compression means.Make second wall advance to the second position in the issue cycle spring compression means application of force, liquid is discharged with substantially invariable flow rate from crushable liquid memory from primary importance.This technical scheme uses spring compression means to replace the motor machine and the controlling organization of complex and expensive, but spring force is directly proportional with decrement, along with moving of second wall, spring stretches, power output reduces, the flow rate of liquid memory output also can reduce thereupon, needs to select for use the strong spring of rigidity to be equipped with damping mechanism for this reason, makes the liquid memory stability under loading; Although but used damping mechanism, and in this case, liquid memory also can be stressed bigger, and therefore, the document has been discussed the specific (special) requirements to liquid memory material therefor intensity.In addition, in this technical scheme, change the flow rate of liquid memory output, finally be to realize by the output channel of selecting different-diameter for use; And in medical practice, the medical worker changes the flow rate of liquid output often according to patient's impression by the speed that changes the extruding syringe; Therefore in clinical use, patient has uncomfortable sensation.
China utility model patent description CN2520870Y discloses number of patent application and has been: 01252485.9, and a kind of technical scheme of " adding pressure type fusion case " by name.Its proposes to stack a crushable liquid storing bag and one and adds the compression swelling airbag in the box of sealing, to the airbag inflation, airbag is constantly expanded and to the liquid storing bag application of force by constantly, thereby liquid flows out continuously from liquid storing bag.The volume of this scheme airbag increases gradually, and that pressure can keep is constant, even not very big also being enough to of pressure is crushed liquid storing bag, thereby needn't propose specific (special) requirements to liquid storing bag material therefor intensity.The medical worker can change the flow rate that liquid is exported thereby change the speed of inflating according to patient's impression, and clinical use patient can feel comfortable.It is simple especially that it also has structure, characteristics easy to utilize.But desire to make liquid to flow out continuously with substantially invariable flow rate, because the compressibility of gas is very difficult, particularly extremely difficult especially under the situation of micrometeor.
Use insulin to treatment of diabetes in, in some treatment of using analgesic, except that the needs medicinal liquid is input in the human body with substantially invariable micrometeor or being passed on the human body continuously, some the time also need to make medicinal liquid to carry out infusion at short notice with bigger dosage, above-mentioned two technical schemes do not possess such function.
Summary of the invention
The present invention aims to provide a kind of simple and effective liquid that makes can reach the micrometeor infusion set of this method of employing automatically with the effusive continuously micrometeor infusion method of constant flow rate.
Second purpose of the present invention provides a kind of liquid and can flow out continuously with constant flow rate automatically, can carry out the micrometeor infusion set of infusion again with bigger dosage at short notice.
The objective of the invention is to realize by following scheme: a kind of micrometeor infusion method, it uses one and has the housing of liquid outlet and inlet opening, a crushable liquid storing bag, an imbibition body, a suction bar and a water storage case; It comprises preparation period and issue cycle; Preparation period has following steps:
A. in housing, put into liquid storing bag, make the intracavity of housing have a wall to contact and make the conduit of liquid storing bag draw housing through liquid outlet with liquid storing bag;
B. in housing, put into the imbibition body, and the imbibition bulk phase stacked on the liquid storing bag described that wall in the housing:
C. closure casing;
D. select suitable suction bar by traffic requirement;
E. make the suction bar be communicated with the imbibition body;
F. make the suction bar be communicated with water storage case through the inlet opening of housing;
G. to the water storage case water filling;
Issue cycle has following steps:
H. imbibition body prolonged expansion after the suction bar continues suction from water storage case;
I. the imbibition body is to the liquid storing bag application of force;
J. the surface that contacts with liquid storing bag on the imbibition body is moving to that wall shift that housing noted earlier contacts with liquid storing bag;
K. imbibition body extruding liquid storing bag makes the conduit of liquid storing bag continue outwards to infuse with constant flow rate;
L. liquid storing bag is flattened fully, and medicinal liquid stops outside output.
A kind of micrometeor infusion set has a housing, has a chamber to can be used to admit crushable liquid storing bag within it; Described intracavity has an available first wall that contacts with liquid storing bag, also has second wall that can move between the two positions, primary importance is left first wall one segment distance so that form the chamber of the liquid storing bag of laying full of liquid betwixt, the second position and first wall are comparatively approaching, form the chamber of the liquid storing bag of laying flattening betwixt; Described intracavity also has a compressor; Make second wall advance to the second position in the issue cycle compressor application of force, liquid is discharged from liquid storing bag from primary importance; Described compressor is the imbibition body, and the imbibition bulk phase stacks on the liquid storing bag described first wall in the housing; Described second wall be on the imbibition body with the contacted surface of liquid storing bag; At issue cycle imbibition body prolonged expansion after the suction bar continues suction from water storage case, second wall extruding liquid storing bag makes the conduit of drawing described chamber on the liquid storing bag continue outwards transfusion; The speed of selectable suction bar control imbibition body imbibition realizes with constant flow rate micrometeor transfusion.
The practice of recommending is: described suction bar is combined by many water-absorption fiber lines that scatter, and a side head boundling of each water-absorption fiber line becomes elongated stem and introduces water storage case.Bar portion continues suction in mode capillaceous from water storage case, the material that changes the diameter of bar portion or change the water-absorption fiber line can select the to absorb water speed of bar suction; The absorbent material that many water-absorption fiber lines that scatter partly contact the imbibition body supplies water.
Particularly: described imbibition body and function water uptake expansion resin is made and many water-absorption fiber lines of the bar that absorbs water are the root system of plant shape and are dispersed in the water uptake expansion resin.Being the many water-absorption fiber lines that the root system of plant shape scatters can extensively contact water uptake expansion resin, makes and supplies water evenly, avoids that water uptake expansion resin is local to supply water too much and softening causing hindered other parts and obtained the situation that supplies water.
A kind of embodiment is: described housing and water storage case fuse, and on its separate layer the inlet opening are arranged, and the bar portion of suction bar is inserted in the inlet opening.
Second purpose of the present invention is on the basis of such scheme, realizes by following technical measures: described housing comprises the pump housing with inner cavity and the pump cover that is fastened on the pump housing; Be provided with the adjusting device of regulating space, described chamber size between the pump cover and the pump housing, can use this adjusting device extruding liquid storing bag and imbibition body, realize heavy dose of transfusion.
A kind of simple structure is: described adjusting device comprises adjusts that pump cover inner bulge portion stretches into pump housing indent spatial thread connection mechanism and to the circumferential registration mechanism between the pump cover and the pump housing.
Best: the scale indicating mechanism that is provided with indication relative position parameter between the described pump cover and the pump housing.
Again: accompany isolating membrane between described imbibition body and the liquid storing bag, the liquid storing bag and the pump housing kept static when the imbibition body was rotated with pump cover.
Described water storage case is provided with water filling port and air vent, so that give the water storage case water filling in use.And then the water filling port of described water storage case and air vent are equipped with and prevent the seal cover that leaks.
Described water storage case is provided with adsorptive pads, so that heeling condition supplies water from trend suction bar.
Micrometeor infusion method of the present invention and device utilize the characteristics of imbibition body imbibition, in the housing of sealing, adopt the imbibition body to push crushable liquid storing bag as application of force thing, with the speed of selectable suction bar control to the water supply of imbibition body, the speed of promptly having controlled the imbibition of imbibition body has also just been controlled the flow rate of the outside output liquid of liquid storing bag, and the liquid in the liquid storing bag can controlledly flow out automatically and continuously.The speed that the suction bar supplies water can be determined by the water absorption channel diameter or the simple measure such as structure and material that change the suction bar, in case determined water absorption channel diameter and the structure and the material of a suction bar, it will keep supplying water with a particular rate in use, and is not subjected to the interference of other external environment factor.Under the situation of micrometeor, the advantage that suction bar water supply rate is controlled and stable is even more important with constant flow rate transfusion for realizing.User can clearly be known the flow rate of transfusion in advance by selecting different suction bars, and is extremely important and favourable to the effect that improves medical treatment.The imbibition of the effusive while imbibition of this method liquid in liquid storing bag body, low to liquid storing bag material therefor requirement of strength; The flow rate of transfusion and used syringe needle caliber are irrelevant, can select suitable syringe needle according to patient's characteristics by medical personnel when clinical, make patient feel comfortable.Method of the present invention also can realize the granting of slow-releasing prolonged action drug, effectively regulates and control blood drug level.Micrometeor infusion set of the present invention is simple in structure, is fit to be carried at free active patient and treats on one's body.Suction bar and imbibition body are made of one, and many water-absorption fiber distance dispersions of suction bar are in water uptake expansion resin, and a side head boundling becomes elongated stem and introduces water storage case; During use, select to change the outfit conveniently, water-swelling property is stable.Housing and water storage case fuse, and compact conformation is suitable to be carried.Be provided with the adjusting device of regulating the inner space size between the ingredient of housing, utilize this adjusting device extruding liquid storing bag and imbibition body, realize heavy dose of transfusion, this device satisfies different medical demands, when having simplified treatment to the active restriction of doctor and patient.Adjusting device is made up of thread connection mechanism and circumferential registration mechanism, is easy to the processing assembling, uses operation also to be easy to grasp.By means of scale indicating mechanism, the heavy dose of amount of infusion of the own may command of patient.Use isolating membrane to separate imbibition body and liquid storing bag, both made imbibition body suction back that sticking phenomenon takes place and also can not driven or fold because of its rotation makes liquid storing bag.Water storage case is established water filling port and air vent and seal cover, is convenient to the water storage case water filling and prevents to leak.Establish adsorptive pads in the water storage case, it is reliable to supply water.
Description of drawings
Fig. 1 is the structural representation of an embodiment of micrometeor infusion set of the present invention.
Fig. 2 is that the A-A of Fig. 1 embodiment is to partly cuing open structural representation.
Fig. 3 is a sketch map of Fig. 1 embodiment user mode.
Fig. 4 be micrometeor infusion set of the present invention another embodiment partly cut open structural representation.
Fig. 5 is the housing schematic appearance of Fig. 4 embodiment.
The specific embodiment
An embodiment of micrometeor infusion set of the present invention is the insulin infusion pumps that can use for the diabetes patient, and it also can be used for the infusion analgesic; Its structure sees also Fig. 1.The housing of this micrometeor infusion set is made up of a pump housing 1 and a pump cover 2 that is fastened on the pump housing 1.
The pump housing 1 is the plat round box shape of opened top, uses the hard transparent plastic material manufacture; Its inner cavity 11 is used for admitting crushable liquid storing bag 6, and the diapire 12 of inner cavity 11 contacts with the flat bottom surface of liquid storing bag 6, and the sidewall of inner cavity 11 has a guide hole 13 and outwards draws for the conduit 61 of liquid storing bag 6; The sidewall of inner cavity 11 has female thread 14 by opening part, for connecting pump cover 2.The pump housing 1 sidewall is provided with 100 positioning convex strips 15 along excircle, and the pump housing 1 excircle is divided into 100 equal intervals.The pump housing 1 sidewall is carved with radial indicatrix 16 together at the ring surface of opening part.The pump housing 1 excircle is equipped with slide switch 7 near guide hole 13 places, is used for bending the conduit 61 of liquid storing bag 6, makes it stop to carry medicinal liquid.
Pump cover 2 small one and large one two bottom surfaces of likeness in form fuse and the oblate box of opened top, and wherein bigger oblate box opening part outwards turns down and forms L shaped cyclic flanging 21, uses the hard transparent plastic material manufacture; Wherein bigger oblate box excircle has external screw thread 22 by bottom place, is coupled to each other with the female thread 14 of the pump housing 1; The lid 23 of the bigger bonding circle of oblate box opening part is a water storage case 3 with its enclose inside.Lid 23 is provided with water filling port 31 and air vent 32, so that to water storage case 3 water fillings.Be equipped with the tender filling hole cover 33 and the vent cap 34 of sealing usefulness on water filling port 31 and the air vent 32 respectively, leaked with defence.Inlet opening 24 is arranged on the separate layer of two oblate boxes, and the bar portion 41 of suction bar 4 is inserted in the inlet opening 24.Suction bar 4 is combined by many water-absorption fiber lines that scatter, and a side head boundling of each water-absorption fiber line becomes elongated stem 41.For the suction bar 4 that makes different rate of water absorption has identical bar portion 41 external diameters, so that its periphery plug-in card is in inlet opening 24 and water-tight, the common practice is the plastic cement pipe with bar portion 41 peripheries parcel proper wall thickness.Less oblate box holds the imbibition body 5 of a pie, and imbibition body 5 usefulness water uptake expansion resins are made and many water-absorption fiber lines 42 of the bar 4 that absorbs water are the root system of plant shape and are dispersed in the water uptake expansion resin.Here said water uptake expansion resin claims super absorbent resin or super-strong moisture absorbing resin or high water absorbency polymer (Super Absorbent Polymer is abbreviated as SAP) again, as polyacrylic acid such as polyacrylamide, polyacrylic acid potassium (salt) class.This water uptake expansion resin, according to the difference of requirement of mechanical strength, water absorption rate can accomplish that greater than own vol tens times are to hundred times; And water holding capacity is strong, and under the condition of pressurized, the water that SAP sucks can not lose yet.One deck adsorptive pads 35 is laid in the bottom of water storage case 3, even the water yield in the water storage case 3 is in heeling condition seldom again, adsorptive pads 35 also can supply water from the trend bar 4 that absorbs water.
See also Fig. 2, the inwall symmetry of flanging 21 longitudinal edges is established two pairs of embedding parts 25, inserts the Location resilient piece 26 of " people " font in the every pair of embedding part 25.The point of Location resilient piece 26 snaps between the adjacent positioning convex strip 15 of the pump housing 1 sidewall two, realizes the circumferential registration between the pump cover 2 and the pump housing 1.The outer surface of flanging 21 horizontal edges is carved with the graduated disc 27 of annular spread, graduated disc 27 matches with the indicatrix 16 of the pump housing 1 sidewall, constitutes that relative rotation position between pump cover 2 and the pump housing 1 changes corresponding origin cause of formation thread connection and the indication that causes the axial displacement parameter of the pump cover 2 relative pump housings 1.The indication of this parameter can be understood as pump cover 2 inner bulge and partly stretches into the spatial degree of depth indication of the pump housing 1 indent.
The using method of present embodiment is please referring to Fig. 3.Before the use, the conduit 61 of liquid storing bag 6 from inside to outside should be passed the guide hole 13 of the pump housing 1, and liquid storing bag 6 is placed in the spatial bottom of the pump housing 1 indent, make the flat bottom surface of liquid storing bag 6 be adjacent to the diapire 12 of inner cavity 11.According to doctor's requirement, select to be equipped with the imbibition body 5 of the suction bar 4 that meets injection speed, this imbibition body 5 is placed in the little oblate box of pump cover 2, and the bar portion 41 of suction bar 4 is inserted in the inlet opening 24, its upper end contact adsorptive pads 35.Between imbibition body 5 and liquid storing bag 6, clamp isolating membrane 8.Then pump cover 2 is covered on the pump housing 1, turn pump cover 2 makes the lower surface of imbibition body 5 push away the upper surface that isolating membrane 8 is pressed to liquid storing bag 6.Close slide switch 7, cut off the supply of conduit 61 herb liquids, cut off conduit 61 terminations of liquid storing bag 6 again, and install syringe needle in this termination.To water storage case 3 water fillings, open slide switch 7 then, after the supply of recovery conduit 61 herb liquids, further screw the air that pump cover 2 is got rid of in pipelines and the syringe needle, just syringe needle can be penetrated human body dispenser position.After this enter the medicine issue cycle, imbibition body 5 continues suction, prolonged expansion own in mode capillaceous from water storage case 3 through the bar portion 41 of suction bar 4; Because the water in the imbibition body 5 can not be extruded under used pressure, the increment of imbibition body 5 volumes is the volume of the water of suction.The increment of this volume then press to it liquid storing bag 6 surfaces of contact, this surface of liquid storing bag 6 is moved gradually to the bottom surface, thereby the medicinal liquid in the liquid storing bag 6 is crossed water speed by the bar portion 41 of suction bar 4 and is discharged by conduit 61 and syringe needle, and the volume of liquid storing bag 6 reduces gradually.Because the bar portion 41 of suction bar 4 absorbs water in the capillary tube mode, the flow rate of crossing water is controlled in very low level, imbibition body 5 is with same small flow rate imbibition, liquid storing bag 6 also discharges medicinal liquid with same small flow rate by conduit 61 and syringe needle, realizes with constant flow rate micrometeor infusion medicinal liquid.When liquid storing bag 6 is flattened fully, medicinal liquid stops outside output, and transfusion finishes.After this, remove syringe needle, open pump cover 2 and extract the imbibition body 5 of inhaling water and the cointegrate that absorbs water bar 4, take down empty liquid storing bag 6 in the pump housing 1, present embodiment just can reuse.
Illustrated that more than the diabetes patient uses present embodiment in the situation of continuous microflow amount infusion of insulin medicinal liquid after the meal.Before the meal, need to use heavy dose of infusion of insulin in the diabetes human body.At this moment, can slowly rotate pump cover 2, utilize the thread connection mechanism between the pump cover 2 and the pump housing 1, pump cover 2 less oblate boxes are shifted downwards while changeing, extruding imbibition body 5 and liquid storing bag 6, they are pressed to the spatial lower surface of the pump housing 1 indent, force in the liquid storing bag 6 the insulin medicinal liquid at short notice fast infusion in the diabetes human body, realize heavy dose of transfusion.Owing to clamped isolating membrane 8 between imbibition body 5 and the liquid storing bag 6, when showing slightly viscid imbibition body 5 after the imbibition with pump cover 2 rotations, relative slip can take place with the upper surface of liquid storing bag 6 in isolating membrane 8, and liquid storing bag 6 can fold, and the liquid storing bag 6 and the pump housing 1 keep static.Isolating membrane 8 can be selected plastic sheeting for use, or is coated with last layer with lubriation material at imbibition body 5 lower surfaces.
Suitably select the internal diameter of the pump housing 1 and the diameter dimension of liquid storing bag 6, can make the gross thickness of liquid storing bag 6 whenever reduce one millimeter, liquid storing bag 6 is outwards exported one milliliter insulin medicinal liquid.When the concentration of insulin medicinal liquid is every milliliter of 100 unit, because female thread 14 spacings of the present embodiment pump housing 1 are 0.5 millimeter, the pump cover 2 relative pump housings 1 circle, and the less oblate box of pump cover 2 is to pressing down 0.5 millimeter, and liquid storing bag 6 is the insulin medicinal liquids of 50 units of output outwards.The pump housing 1 excircle marks off 100 numeration unit with 100 positioning convex strips 15, the insulin amount of liquid medicine of 0.5 unit of the corresponding expression in each unit.And the graduated disc 27 of pump cover 2 has corresponding 100 the numeration unit of 50 graduation marks, corresponding 2 numeration unit between two adjacent graduation marks, the insulin amount of liquid medicine of 1 unit of expression.When heavy dose is infused, the indicatrix 16 of writing down the pump housing 1 when initial corresponding graduation mark on the graduated disc 27 of pump cover 2, the indicatrix 16 of the pump housing 1 is tackled on that graduation mark of the graduated disc 27 of pump cover 2 in the time of just can extrapolating end according to the amount of liquid medicine of wanting infusion.Accomplish quantitative heavy dose of transfusion by this.In addition, when rotating pump cover 2, the positioning convex strip 15 that the point of the Location resilient piece 26 of " people " font streaks the pump housing 1 sidewall on the pump cover 2 can send slight " Ka Da " sound when falling, and sharp-eared people also can judge with this, accomplishes that quantitative heavy dose infuses.
Under some situation, patient also needs temporarily to stop the infusion medicinal liquid, uses present embodiment can realize this requirement.
When patient need temporarily stop the infusion medicinal liquid, write down the graduation mark of indicatrix 16 correspondence on the graduated disc 27 of pump cover 2 of the pump housing 1, observe the lower surface of imbibition body 5 on one side, the pump cover of reverse rotation on one side 2, the upper surface that breaks away from isolating membrane 8 or isolating membrane 8 disengaging liquid storing bags 6 up to the lower surface of imbibition body 5, turn-off slide switch 7 again, cut off the supply of conduit 61 herb liquids.When needing to recover the infusion medicinal liquid, observe the lower surface of imbibition body 5 on one side, be rotated in the forward pump cover 2 on one side, lower surface contact up to imbibition body 5 breaks away from isolating membrane 8, and the upper surface of isolating membrane 8 contact liquid storing bags 6, the indicatrix 16 of the pump housing 1 is roughly got back to original graduation mark position corresponding on the graduated disc 27 of pump cover 2, opens slide switch 7 again, the supply that conduit 61 recovers medicinal liquid.
Another embodiment of micrometeor infusion set of the present invention is the infusion pump that uses for general cancer patient, and it can be used for continuing micrometeor infusion anticancer agent.Its structure sees also Fig. 4.The housing 100 hard transparent plastic material manufacture of this micrometeor infusion set; Its inside is divided into end box 110, hamper 120 and water storage case 130.End box 110 and hamper 120 are rectangular boxs that a pair of mutual fastening and buckling surface open wide, and a wall 112 and the water storage case 130 of end box 110 join together, and another wall 113 of end box 110 is established the wall 121 that hinge 101 connects hamper 120.
Please in conjunction with referring to Fig. 5.
It is box-like that end box 110 is the prolate of opened top, and its inner cavity 111 is used for admitting imbibition body 500.The wall 112 of end box 110 is provided with inlet opening 114 and is communicated with water storage case 130.Guide plate 102 is established in the inboard, unlimited limit of the long wall 115,116 of two other of end box 110, plays the role of positioning when hamper 120 is fastened, and two grab plates 103 are respectively established in the outside, unlimited limit of two walls 115,116, have locking effect when hamper 120 is fastened.Orifice plate 104 is established in the outside, base of two walls 115,116, and supply and demand wears the fixedly belt of usefulness in the time of whole infusion pump will being fixed on the free active patient body.
It is box-like that hamper 120 is the prolate of opening wide the bottom surface, its inner cavity 122 is used for admitting crushable liquid storing bag 600, the roof 123 of inner cavity 122 contacts with the flat bottom surface of liquid storing bag 6, and the roof 123 and wall 121 intersections of inner cavity 122 have a guide hole 124 and outwards draw for the conduit 610 of liquid storing bag 600.Two card posts 127 are respectively established in the outside, unlimited limit of the long wall 125,126 of two other of hamper 120, with grab plate 103 corresponding matching of end box 110.
Water storage case 130 is the rectangle box body of sealing, and one of them wall 131 is provided with water injection hole 132 and steam vent 133, and this wall 131 is provided with up-hole plate 105 by the middle position on base, lays usefulness for the occasion of hanging use.Water injection hole 132 and steam vent 133 are equipped with rubber stopper 134 respectively, prevent to leak.
Suction bar 400 is combined by many water-absorption fiber lines that scatter, and a side head boundling of each water-absorption fiber line becomes elongated stem 410.The speed of suction bar 400 suction is by water absorption channel diameter or structure and material decision, in the present embodiment, by the diameter decision of wire harness in the material of water-absorption fiber line and the bar portion 410.For the suction bar 400 that makes different rate of water absorption has identical bar portion 410 external diameters, so that its periphery plug-in card is in inlet opening 114 and water-tight, the plastic cement pipe of bar portion 410 peripheries parcel proper wall thickness.
Imbibition body 500 is made one with suction bar 400 in advance, and the pie that is rectangle matches with the inner cavity 111 of end box 110; Imbibition body 500 itself forms with the water uptake expansion resin compacting and many water-absorption fiber lines 420 of the bar 400 that absorbs water are the root system of plant shape and are dispersed in the water uptake expansion resin.
Before present embodiment uses, the conduit 610 of liquid storing bag 600 from inside to outside should be passed the guide hole 124 of hamper 120, and liquid storing bag 6 is placed in the inner cavity 122 of hamper 120, make the flat bottom surface of liquid storing bag 600 be adjacent to the roof 123 of inner cavity 122.According to doctor's requirement, select to be equipped with the imbibition body 500 of the suction bar 400 that meets injection speed, this imbibition body 500 is placed in the inner cavity 111 of end box 110, and the bar portion 410 of suction bar 400 is inserted in the inlet opening 114.Then hamper 120 is covered on end box 110, each grab plate 103 on the end box 110 is snapped into corresponding respectively blocking on the post 127, hamper 120 is locked together on the end box 110.Cut off conduit 610 terminations of liquid storing bag 600 again, and install syringe needle in this termination.To water storage case 130 water fillings, imbibition body 500 continues suction in mode capillaceous from water storage case 130 through the bar portion 410 of suction bar 400, prolonged expansion own is pressed to liquid storing bag 600 surfaces of contact with it, this surface that makes liquid storing bag 600 to hamper 120 roof 123 move gradually, thereby the medicinal liquid in the liquid storing bag 600 is discharged by conduit 61 and syringe needle, after getting rid of the air in pipeline and the syringe needle, just syringe needle can be penetrated human body dispenser position.After this enter the medicine issue cycle, imbibition body 500 continues suction, prolonged expansion own in mode capillaceous from water storage case 130 through the bar portion 410 of suction bar 400; The increment of imbibition body 500 volumes is the volume of the water of suction.The increment of imbibition body 500 volumes then press to it liquid storing bag 600 surfaces of contact, make liquid storing bag 600 to hamper 120 roof 123 gradually reduce, thereby the medicinal liquid in the liquid storing bag 600 is crossed water speed by the bar portion 410 of suction bar 400 and is discharged by conduit 610 and syringe needle, realizes with constant flow rate micrometeor infusion medicinal liquid.When liquid storing bag 600 is flattened fully, medicinal liquid stops outside output, and transfusion finishes.After this, remove syringe needle, open each grab plate 103, open hamper 120, take down empty liquid storing bag 600 in hamper 120, extract the imbibition body 500 of inhaling water and the cointegrate that absorbs water bar 400 from the inner cavity 111 of end box 110, present embodiment just can reuse.
As long as it is enough big that the suction bar of selecting for use 400 is crossed water speed, present embodiment just can be used for venous transfusion.With belt whole infusion pump is fixed on the free active patient body, the sick and wounded's transfer is very meaningful during for field operations or other similar state of emergency.
The concrete structure of micrometeor infusion set of the present invention is not limited in above-mentioned two embodiment, and for example, heavy dose of transfusion can utilize manually water filling in the imbibition body of syringe; The suction bar can or be established an elastic cavity with the compound porous water-absorbing structure of the written the sort of hard fibre of coloured art pen between water storage case and imbibition body, a check valve is respectively established at the two ends of this cavity, under the control of external electric pulse, push this cavity, realize automatically controlled quantitatively to imbibition body water filling replacement suction bar with piezoelectric patches.The imbibition body also can be selected rubber, fiber, the sponge of imbibition as the case may be for use.All this kind; so long as in the housing of sealing, adopt the imbibition body to push crushable liquid storing bag as application of force thing; control the flow rate of the outside output liquid of liquid storing bag simultaneously with the imbibition speed of suction bar control imbibition body, liquid can be controlled all should be belonged among protection scope of the present invention with the effusive automatically and continuously infusion set of micrometeor.
Claims (11)
1. micrometeor infusion method, its uses one and has the housing of liquid outlet and inlet opening, a crushable liquid storing bag, an imbibition body, a suction bar and a water storage case; It comprises preparation period and issue cycle; Preparation period has following steps:
A. in housing, put into liquid storing bag, make the intracavity of housing have a wall to contact and make the conduit of liquid storing bag draw housing through liquid outlet with liquid storing bag;
B. in housing, put into the imbibition body, and the imbibition bulk phase is stacked on the liquid storing bag described that wall in the housing;
C. closure casing;
D. select suitable suction bar by traffic requirement;
E. make the suction bar be communicated with the imbibition body;
F. make the suction bar be communicated with water storage case through the inlet opening of housing;
G. to the water storage case water filling;
Issue cycle has following steps:
H. imbibition body prolonged expansion after the suction bar continues suction from water storage case;
I. the imbibition body is to the liquid storing bag application of force;
J. the surface that contacts with liquid storing bag on the imbibition body is moving to that wall shift that housing noted earlier contacts with liquid storing bag;
K. imbibition body extruding liquid storing bag makes the conduit of liquid storing bag continue outwards to infuse with constant flow rate;
L. liquid storing bag is flattened fully, and medicinal liquid stops outside output.
2. a micrometeor infusion set has a housing, has a chamber to can be used to admit crushable liquid storing bag within it; Described intracavity has an available first wall that contacts with liquid storing bag, also has second wall that can move between the two positions, primary importance is left first wall one segment distance so that form the chamber of the liquid storing bag of laying full of liquid betwixt, the second position and first wall are comparatively approaching, form the chamber of the liquid storing bag of laying flattening betwixt; Described intracavity also has a compressor; Make second wall advance to the second position in the issue cycle compressor application of force, liquid is discharged from liquid storing bag from primary importance; It is characterized in that: described compressor is the imbibition body, and the imbibition bulk phase stacks on the liquid storing bag described first wall in the housing; Described second wall be on the imbibition body with the contacted surface of liquid storing bag; At issue cycle imbibition body prolonged expansion after the suction bar continues suction from water storage case, second wall extruding liquid storing bag makes the conduit of drawing described chamber on the liquid storing bag continue outwards transfusion; The speed of selectable suction bar control imbibition body imbibition realizes with constant flow rate micrometeor transfusion.
3. micrometeor infusion set according to claim 2 is characterized in that: described suction bar is combined by many water-absorption fiber lines that scatter, and a side head boundling of each water-absorption fiber line becomes elongated stem and introduces water storage case.
4. micrometeor infusion set according to claim 3 is characterized in that: described imbibition body and function water uptake expansion resin is made and many water-absorption fiber lines of the bar that absorbs water are the root system of plant shape and are dispersed in the water uptake expansion resin.
5. Microfluidic Pump according to claim 4 is characterized in that: described housing and water storage case fuse, and on its separate layer the inlet opening are arranged, and the bar portion of suction bar inserts in the water storage case through the inlet opening.
6. according to claim 2 or 3 or 4 or 5 described micrometeor infusion sets, it is characterized in that: described housing comprises the pump housing with inner cavity and the pump cover that is fastened on the pump housing; Be provided with the adjusting device of regulating space, described chamber size between the pump cover and the pump housing, can use this adjusting device extruding liquid storing bag and imbibition body, realize heavy dose of transfusion.
7. micrometeor infusion set according to claim 6 is characterized in that: described adjusting device comprises adjusts that pump cover inner bulge portion stretches into pump housing indent spatial thread connection mechanism and to the circumferential registration mechanism between the pump cover and the pump housing.
8. micrometeor infusion set according to claim 7 is characterized in that: the scale indicating mechanism that is provided with indication relative position parameter between the described pump cover and the pump housing.
9. micrometeor infusion set according to claim 7 is characterized in that: accompany isolating membrane between described imbibition body and the liquid storing bag, the liquid storing bag and the pump housing kept static when the imbibition body was rotated with pump cover.
10. according to claim 2 or 3 or 4 or 5 described micrometeor infusion sets, it is characterized in that: described water storage case is provided with water filling port and air vent, so that to the water storage case water filling; The water filling port of water storage case and air vent are equipped with and prevent the seal cover that leaks.
11. Microfluidic Pump according to claim 10 is characterized in that: described water storage case is provided with adsorptive pads, so that heeling condition supplies water from trend suction bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410023901 CN1679977A (en) | 2004-04-08 | 2004-04-08 | Infusion method and device with microflow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410023901 CN1679977A (en) | 2004-04-08 | 2004-04-08 | Infusion method and device with microflow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1679977A true CN1679977A (en) | 2005-10-12 |
Family
ID=35066963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410023901 Pending CN1679977A (en) | 2004-04-08 | 2004-04-08 | Infusion method and device with microflow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1679977A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104288859A (en) * | 2014-10-02 | 2015-01-21 | 谢安军 | Transfusion device with warming function |
| CN105473172A (en) * | 2013-08-23 | 2016-04-06 | Lts勒曼治疗系统股份公司 | Transdermal therapeutic system with pressure generating device |
| CN108888827A (en) * | 2018-06-25 | 2018-11-27 | 南京市第医院 | Multifunctional intellectual infusion pump |
| CN110790597A (en) * | 2019-11-19 | 2020-02-14 | 重庆市林业科学研究院 | Nutrient solution for plant infusion and plant infusion device |
-
2004
- 2004-04-08 CN CN 200410023901 patent/CN1679977A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105473172A (en) * | 2013-08-23 | 2016-04-06 | Lts勒曼治疗系统股份公司 | Transdermal therapeutic system with pressure generating device |
| CN104288859A (en) * | 2014-10-02 | 2015-01-21 | 谢安军 | Transfusion device with warming function |
| CN108888827A (en) * | 2018-06-25 | 2018-11-27 | 南京市第医院 | Multifunctional intellectual infusion pump |
| CN108888827B (en) * | 2018-06-25 | 2023-08-25 | 南京市第一医院 | Multifunctional intelligent infusion pump |
| CN110790597A (en) * | 2019-11-19 | 2020-02-14 | 重庆市林业科学研究院 | Nutrient solution for plant infusion and plant infusion device |
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