Medical infusion deviceTechnical field
The present invention relates to technical field of medical instruments, and in particular to a kind of medical infusion device.
Background technology
Medical infusion bottle be for patient infusion fashionable dress the bottle of the liquid of medical configuration in defeated human body.Transfusion device is to useIn venous transfusion by aseptic process, set up the common disposable medical treatment consumptive materials of passage between vein and liquid.OneAs by intravenous needle, helmet, infusion tube, liquid medicine filter, flow regulator, dropping funnel, bottle plug puncture unit, air inlet pipe, air mistakeFilter connection composition.Under atmospheric pressure effect, the infusion tube that liquid runs down is thinner in infusion bottle flows into dropping funnel, when dropping funnel waterWhen column pressure is more than vein pressure, the liquid runs down flexible pipe in bottle flows into vein.
The sterilization term of validity of medical worker's preoperation inspection disposable transfusion device and it is packaged with without gas leakage and other exceptions, takesGo out transfusion device, cone joint part (bottle plug puncture unit) is inserted into infusion bottle, infusion bottle is hung on transfusion pole, be vented to liquidWoven hose lower end is flow to, adjuster is fastened, then vein is needled into the vein for disinfecting, after fixing, untie tourniquet, adjustedCommutating speed.
There is problems with existing transfusion device：First, liquid flow velocity most at first in woven hose is very fast, withLiquid flows out, and the fluid column in bottle is in a slight decrease, and overhead gas volume slightly becomes big, and pressure is slightly reduced so that bottle mouth position it is totalPressure is slightly smaller than external atmosphere pressure, and outer atmospheric pressure just supplements air from air inlet pipe press-in bottle, makes the pressure base of bottle mouth positionAn atmospheric pressure is maintained on this, liquid is at the uniform velocity stably dripped, do not changed again with gradually decreasing for bottle Chinese medicine liquid, butBefore i.e. flow velocity is not stablized also in the incipient short time, the pressure of bottle mouth position can be slightly larger than an atmospheric pressure, so most openingEasily drip quickly in a period of time of beginning, easily bring discomfort to patient body.Second, when transfusion speed is very fast, infusion bottleIn the liquid level short time change greatly, because air inlet pipe is arranged on bottle plug puncture unit, the inlet channel of air inlet pipe is very thin, emptyGas just timely cannot enter supplement in infusion bottle by air inlet pipe so that during pressure at infusion bottle mouth change very greatly,Therefore the phenomenon dripped that liquid cannot at the uniform velocity be stablized occurs.
When how to ensure transfusion, no matter transfusion speed is fast, or slowly, it is one that what liquid can at the uniform velocity be stablized dripsThe technical problem of very worth research.
The content of the invention
The technical problem to be solved in the present invention：Within a period of time for starting, liquid easily drips very existing transfusion deviceHurry up, it is impossible to which at the uniform velocity stable drips, and easily brings discomfort to patient body；And when transfusion speed is very fast, due to air inlet pipe withoutMethod also easily occurs the phenomenon dripped that liquid cannot at the uniform velocity be stablized to infusion bottle make-up gas in time.
In order to solve the above technical problems, the technical solution adopted by the present invention：Medical infusion device, it is characterised in that bagInclude hydrostatic column, hemispherical sponge, liquid filling hole, air admission hole, infusion hole；
Described hemispherical sponge is arranged at the bottom of hydrostatic column so that the bottom of hydrostatic column forms one and halfSpherical cavity；
Described liquid filling hole is arranged at the top of hydrostatic column, and removable rubber lid is set on liquid filling hole；
Described air admission hole is arranged at and air cleaner is set in the top of hydrostatic column, air admission hole；
Described infusion hole is arranged at the bottom of hydrostatic column, and removable rubber plug is set on infusion hole；
More preferred technical scheme, the diameter of described hemispherical sponge is less than the diameter of hydrostatic column cross section.
More preferred technical scheme, described hemispherical sponge is fixedly connected with the bottom of hydrostatic column.
Compared with prior art, the beneficial effects of the invention are as follows：
First, a kind of medical infusion device proposed by the present invention just can be at the uniform velocity steady in the very short time liquid that transfusion most startsFixed drips, and will not bring discomfort to patient body；Second, even if transfusion speed is very fast, air remains able to add in timeWhat infusion bottle Chinese medicine liquid still can at the uniform velocity be stablized drips.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Wherein, 1 is hydrostatic column；2 is hemispherical sponge；3 is liquid filling hole；4 is air admission hole；5 is infusion hole.
Specific embodiment
The present invention is described in detail below in conjunction with the accompanying drawings.
Transfusion device be for venous transfusion by aseptic process, set up common one of passage between vein and liquidThe medical treatment consumptive materials of secondary property.Typically by intravenous needle, helmet, infusion tube, liquid medicine filter, flow regulator, dropping funnel, bottle stopper punctureDevice, air inlet pipe, air cleaner connection composition, air cleaner are arranged in air inlet pipe；Knowledge on transfusion device belongs to existingSome common knowledges, are not described in detail.
Medical infusion device and manufacture method, including hydrostatic column, hemispherical sponge, liquid filling hole, air admission hole, transfusionHole；
Described hemispherical sponge is arranged at the bottom of hydrostatic column so that the bottom of hydrostatic column forms one and halfSpherical cavity；Described liquid filling hole is arranged at the top of hydrostatic column, and removable rubber lid is set on liquid filling hole；Described entersStomata is arranged at and air cleaner is set in the top of hydrostatic column, air admission hole (air cleaner is existing known technology)；
Described infusion hole is arranged at the bottom of hydrostatic column, and removable rubber plug is set on infusion hole (can will be defeatedThe bottle plug puncture unit of liquid device is inserted directly into)；
Wherein, the diameter of described hemispherical sponge is less than the diameter of hydrostatic column cross section, and hemispherical spongeIt is fixedly connected with the bottom of hydrostatic column.The pore size of hemispherical sponge can ensure that liquid smoothly enters into hemispherical seaIn the continuous semicircle wall formed with hydrostatic column.
Operation principle of the invention：After by liquid filling hole, liquid is added in hydrostatic column, hydrostatic columnTop is provided with air admission hole, so that the air of outside can be accessible to inside hydrostatic column, if it is not provided with hemisphereThe pressure of hydrostatic column bottom is theoretically equal to an atmospheric pressure plus the hydraulic pressure in container if shape sponge, due to infusingJourney Chinese medicine liquid gradually decreases therefore hydraulic pressure and constantly reduces, therefore causes hydrostatic column base pressure to taper into, due to cylinderShape container bottom is provided with hemispherical sponge cushioning effect, and hemispherical sponge causes that the bottom formation one of hydrostatic column is slightHemispherical cavity, the pressure of such hydrostatic column inner liquid medicine is mainly and is added in above hemispherical sponge, so that circleThe pressure of the bottom of cylindrical container is almost unchanged, so as to the flow velocity that ensure that woven hose in whole infusion process is highly stable.
Application method of the invention：
The first step, it would be desirable to which the liquid of transfusion is added to syringe, the syringe needle of syringe passes through the detachable rubber of liquid filling holeJiao Gai, liquid is added to inside hydrostatic column；
Second step, the removable rubber plug that will be set on the described infusion hole of the bottle plug puncture unit insertion of transfusion device；
3rd step, adjusts the flow regulator of transfusion device.
The transfusion system that the present invention may be constructed：
Medical delivery system, including hydrostatic column, hemispherical sponge, liquid filling hole, air admission hole, infusion hole；Described halfSpherical sponges are arranged at the bottom of hydrostatic column so that a hemispherical cavity is formed on the bottom of hydrostatic column；DescribedLiquid filling hole is arranged at the top of hydrostatic column, and removable rubber lid is set on liquid filling hole；Described air admission hole is arranged at cylinderDescribe and air cleaner is set in the top of device, air admission hole；Described infusion hole is arranged at the bottom of hydrostatic column, infusion holeUpper setting removable rubber plug；
Also include intravenous needle, infusion tube, liquid medicine filter, flow regulator, dropping funnel, bottle plug puncture unit；Infusion tubeOne end set bottle plug puncture unit, the other end set intravenous needle；Liquid medicine filter, flow velocity is set between the two ends of infusion tube to adjustSection device, dropping funnel；Bottle plug puncture unit is inserted into the removable rubber plug of infusion hole.
Transfusion system explanation：Transfusion system is that medical infusion device of the invention is combined with existing transfusion device, butThe air admission hole and air cleaner of existing transfusion device are eliminated (because the top of medical infusion device of the invention is configuredAir admission hole).
Transfusion system can be improved further：The infusion hole of hydrostatic column bottom no longer sets removable rubber plug,Transfusion device also no longer sets bottle plug puncture unit, one end of infusion tube is directly fixed with the infusion hole of hydrostatic column bottom and is connectedConnect.To inside hydrostatic column add liquid when, it is necessary to flow regulator is closed, it is ensured that flow velocity is zero.