Single use safe transfusion systemTechnical field
This utility model relates to the aseptic medical equipment for clinical transfusion purposes, particularly relates to the safe transfusion system with automatic vent and automatic liquid-stopping function.
Background technology
At present, the general infusion set that medical field is commonly used is when transfusion just starts, must by manually squeezing dropping funnel, could medicinal liquid be introduced in dropping funnel from infusion bottle, enter the process of dropping funnel by pipeline from dropper at medicinal liquid, gas in dropping funnel is easily discharged formation gas-liquid mixture downwards and is entered in long transfusion catheter by medicinal liquid, therefore bubble is produced, simultaneously, due to the surface tension effects of transfusion long duct inwall, a small amount of bubble is easily adsorbed at the inwall of transfusion long duct, the process getting rid of bubble is comparatively difficult, time-consuming and loaded down with trivial details, if bubble enters in patient body, easily cause the harm such as aeroembolism.So medical personnel, must be artificial by the emptying as much as possible of the bubble in transfusion device long duct before infusing, and the process of artificial aerofluxus bubble is not only loaded down with trivial details but also time-consuming, while the working strength increasing medical personnel, is also unfavorable for promptly infusing and giving emergency treatment to a patient.
In clinical transfusion process, usual medical personnel will look after the transfusion of patient in several ward, labor intensity is very large, usually occur that failing to observe in time infusion bottle inner liquid medicine because of medical personnel, patient or family numbers of patients has been totally lost and does not change infusion bottle in time or extract the phenomenon of infusion needle, liquid level declines too low and causes gas to enter human body causing the adverse consequencess such as aeroembolism, bring heavy mental burden to medical personnel, patient or family numbers of patients.
Therefore, in clinical transfusion operation, use a kind of safe transfusion system with automatic vent and automatic liquid-stopping function just particularly important.
Summary of the invention
The purpose of this utility model is: provide a kind of single use safe transfusion system, can automatic vent in infusion process, medicinal liquid will by defeated to the greatest extent time automatic liquid-stopping, structure is simple, safe and reliable.
This utility model is achieved through the following technical solutions: this disposable safe transfusion system comprises protective sleeve, bottle plug puncture unit, soft dropping funnel, hard dropping funnel, transfusion long duct, flow regulator, threeway, liquid injecting piece, liquid medicine filter and intravenous needle, bottle plug puncture unit is sleeved on soft dropping funnel through dropping funnel lid, hard dropping funnel is installed in the bottom of soft dropping funnel, the bottom of hard dropping funnel connects transfusion catheter one end, the other end of transfusion catheter is through flow regulator connecting tee, the dosing mouth of threeway arranges rubber cap, the other end of threeway to be connected liquid injecting piece successively by transfusion catheter, liquid medicine filter and intravenous needle, protective sleeve is sleeved on bottle plug puncture unit, overall formation safe transfusion system, it is characterized in that: integrated injection molding dropping funnel lid, air inlet and steam vent on bottle plug puncture unit, all air-filtering membrane be installed in air inlet and steam vent and sealed by air filtration cap, hard dropping funnel inner bottom surface installs medical filtration net and is fixed by liquid medicine filter seat, floating plug is contained in hard dropping funnel, and latex cap is embedded in floating plug concave surface relative with the infusion port of hard dropping funnel.
Wherein, the external diameter of described floating plug is more smaller than hard dropping funnel internal diameter, and the outside of floating plug is gear-like sidewall, and the top of floating plug is ball-type buffering convex surface, and the bottom of floating plug is concave surface.
Wherein, described latex cap is the latex ring that one side is provided with Emulsoid-film, and latex cap entirety plug is in the concave surface of floating plug, and Emulsoid-film is just to infusion port.Described latex cap also can be the latex ring that one side is provided with latex conical plug, and latex ring entirety plug is in the concave surface of floating plug, and latex conical plug is just to the infundibulate infusion port of hard dropping funnel.
Wherein, concave surface inwall and the latex cap joint of floating plug have air channel, and air channel size medicinal liquid under normal infusion state cannot enter floating plug cavity.
Wherein, arrange in soft dropping funnel and only rise bank, floating plug is active in and only rises between bank and infusion port.
This utility model automatic vent; automatic stopping liquid medicine flow; simplify bleeding step, alleviate working strength, structure is simple; safe and reliable; both ensure that the safety of patient fluid infusion's overall process, and alleviated again stress and the operating pressure of patient and medical worker, reach the usefulness of vein safe infusion; be conducive to the treatment to clinical patients, this for reduce further and avoid malpractice there is very positive meaning.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is the generalized section of automatic exhausting equipment.
Fig. 3 is the generalized section of automatic liquid-stopping structure.
Fig. 4 is the generalized section of another embodiment of automatic liquid-stopping structure.
Fig. 5 is the upward view of floating plug.
In figure: 1 protective sleeve, 2 bottle plug puncture units, 3 air filtration caps, 4 air-filtering membranes, 5 soft dropping funnels, 6 hard dropping funnels, 7 floating plugs, 8 latex caps, 9 transfusion catheters, 10 flow regulators, 11 threeways, 12 liquid injecting pieces, 13 liquid medicine filters, 14 intravenous needles, 2a dropping funnel lid, 2b air inlet, 2c steam vent, 5a only rise bank, 6a infusion port, 7a concave surface, 7b air channel, 8a Emulsoid-film, 11a rubber cap.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail.
As Figure 1-4, this single use safe transfusion system comprises protective sleeve 1, bottle plug puncture unit 2, soft dropping funnel 5, hard dropping funnel 6, transfusion catheter 9, flow regulator 10, threeway 11, liquid injecting piece 12, liquid medicine filter 13 and intravenous needle 14, bottle plug puncture unit 2 is sleeved on soft dropping funnel 5 through dropping funnel lid 2a, hard dropping funnel 6 is installed in the bottom of soft dropping funnel 5, the bottom of hard dropping funnel 6 connects transfusion catheter 9 one end, the other end of transfusion catheter 9 is through flow regulator 10 connecting tee 11, the dosing mouth of threeway 11 is arranged rubber cap 11a, the other end of threeway 11 to be connected liquid injecting piece 12 successively by transfusion catheter 9, liquid medicine filter 13 and intravenous needle 14, bottle plug puncture unit 2 is set with protective sleeve 1, overall formation safe transfusion system, it is characterized in that: bottle plug puncture unit 2 all installs air-filtering membrane 4 in integrated injection molding dropping funnel lid 2a, air inlet 2b and steam vent 2c, air inlet 2b and steam vent 2c and is sealed by air filtration cap 3, floating plug 7 is contained in hard dropping funnel 6, and the concave surface 7a that latex cap 8 is embedded in floating plug is interior relative with the infusion port 6a of hard dropping funnel.
As shown in Figure 3, the external diameter of described floating plug 7 is more smaller than hard dropping funnel 6 internal diameter, and the outside of floating plug is gear-like sidewall, and the top of floating plug is ball-type buffering convex surface, and the bottom of floating plug is concave surface 7a.
As shown in Figure 3, described latex cap 8 is the latex ring that one side is provided with Emulsoid-film 8a, and latex cap 8 entirety plug is in the concave surface 7a of floating plug, and Emulsoid-film 8a is just to infusion port 6a.
Another embodiment as shown in Figure 4, described latex cap 8 also can be the latex ring that one side is provided with latex conical plug 8b, and latex ring entirety plug is in the concave surface 7a of floating plug, and latex conical plug 8b is just to the infundibulate infusion port 6b of hard dropping funnel.
As shown in Figure 5, concave surface 7a inwall and latex cap 8 joint of floating plug have air channel 7b, and the size of air channel 7b ensures that medicinal liquid cannot enter floating plug cavity under normal infusion state.
As shown in Figure 1, arrange in soft dropping funnel 5 and only rise bank 5a, floating plug 7 is active in and only rises between bank 5a and infusion port.
When transfusion operation starts, first the air filtration cap 3 of steam vent 2c is opened, take off protective sleeve 1, bottle plug puncture unit 2 is inserted in infusion vessel bottle stopper, again the air filtration cap 3 of air inlet 2b is opened, medicinal liquid automatically enters in soft dropping funnel 5 under the effect of atmospheric pressure and self gravitation, the top ball-type being first dropped in floating plug 7 cushions on convex surface and is flowed in hard dropping funnel 6 by dispersion drain through the space of gear-like sidewall, along with the accumulation gradually of medicinal liquid, automatically the gas bottom hard dropping funnel 6 is discharged by steam vent, simultaneously, floating plug 7 rises under the buoyancy of liquid, automatically infusion port is opened, medicinal liquid flows through liquid medicine filter 13 and finally flows out from intravenous needle 14 needle tubing endoporus, air in each parts of automatic eliminating, when in dropping funnel, liquid level rises to certain altitude, close the air filtration cap 3 of steam vent 2c to keep certain liquid level, puncture vein according to a conventional method, regulated drip speed, normal infusion by actuator 10, among this process, also bubble-freely in whole communication path to be mixed into, bubble directly can not enter in transfusion long duct 9 as general infusion set, thus effectively prevents bubble from producing,
When medicinal liquid is nearly totally lost, floating plug 7 is along with liquid level decline, and as shown in Figure 3, when contacting to Emulsoid-film 8a with infusion port 6a, under atmospheric pressure and floating plug 7 gravity pressure, Emulsoid-film 8a just tightly blocks infusion port 6a; As shown in Figure 4, when contacting to latex conical plug 8b with infusion port 6b, under atmospheric pressure and floating plug 7 gravity pressure, latex conical plug 8b just tightly blocks infusion port 6b, makes air not enter into the infusion pipeline of below infusion port, prevents air from entering patient's vein.
Above-mentioned only for illustration of the utility model, and be not limitation of the utility model, those skilled in the art, when not departing from the spirit and scope of utility model, can also make a variety of changes and modification, all equivalent technical schemes also belong to category of the present utility model.