CN209630326U - A kind of infusion pipeline automatic flow-stop valve - Google Patents

Abstract

The utility model relates to medical instruments fields, provide a kind of infusion pipeline automatic flow-stop valve.The flow-stop valve is made of umbrella valve (10), upper valve base (20), valve seat (30) and lower valve base (40)；Upper valve base (20) inner hollow, upper end are water inlet (21)；Lower valve base (40) inner hollow, lower end are water outlet (41)；Upper valve base (20) lower end and the upper end of lower valve base (40) are fixed, and the passable space of water flow is formed；Valve seat (30) is located at upper valve base (20) inside, and valve seat (30) is fixed with upper valve base (20) inner wall；Umbrella valve (10) is stuck on the intermediate hole of valve seat (30) in shape is inverted, and umbellate form part (11) are fexible film, and elastic deformation can occur.

Description

A kind of infusion pipeline automatic flow-stop valve

Technical field

The utility model belongs to medical instruments field, and in particular to a kind of infusion pipeline automatic flow-stop valve.

Technical background

Since last century, China's popularity uses disposable transfusion device, for establishing between venous patient and medical fluid Channel, by infusion apparatus will medical fluid input human body in.The use of disposable transfusion device in clinical transfusion to prevent intersect feel Dye plays positive effect.But there is also certain shortcomings for general infusion set: completing in infusion or infusion group replaces When, transfusion needle need to be extracted immediately, otherwise air can be entered in human vein by perfusion tube, and air inputs human body can be to patient Health have an impact；The nursery work intensity of medical worker has also been aggravated simultaneously, is easy to cause doctor-patient dispute.Therefore exist The infusion apparatus of automatic liquid-stopping comes into being after the completion of infusion, and automatic liquid-stopping transfusion apparatus can retain medicine in the case where unattended Liquid makes to retain partially liq in perfusion tube, so that air be prevented to enter human body after liquid is finished, produces when reducing infusion to human body Raw adverse effect, and reduce the workload of nurse job personnel.

As shown in Figure 1, a kind of existing floating-ball type fluid stopping scheme, is made of dropping funnel 1 ' and floating ball 2 '.Its working principle is that Nozzle carries out fluid stopping below floating ball blocking dropping funnel.

As shown in Fig. 2, a kind of existing air filter membrane type flow-stop valve, is mainly made of valve body and air filter film 3 '.Its work Principle is filtration of the air filter film to air, i.e. air cannot make air and medical fluid above and below filter membrane by air filter film It is separated, to realize fluid stopping effect.

But above two prior art still has defect, and floating-ball type fluid stopping scheme is to stop liquid in a manner of filling in and block up, and floats Required precision at ball and the cooperation sealing of the medicine liquid outlet of dropping funnel bottom is high, and what existing technique was extremely difficult to be fully sealed wants It asks, causes the reliability of only liquid not high.Although air filter membrane type flow-stop valve can reach fluid stopping effect, to reach fluid stopping effect, Filter membrane mesh density need to be done small, flow velocity is very slow when this makes medical fluid pass through filter membrane, will affect when needing fast rinse operation Its operating effect.

Utility model content

Defect and deficiency based on the above-mentioned prior art, the utility model provide a kind of infusion pipeline that structure is different from Dynamic flow-stop valve, and the infusion pipeline comprising the flow-stop valve, can be improved fluid stopping efficiency, expand the scope of application.

The utility model is achieved through the following technical solutions:

A kind of infusion pipeline automatic flow-stop valve, the flow-stop valve is by umbrella valve 10, upper valve base 20, valve seat 30 and lower valve base 40 It constitutes.Upper valve base 20 is hollow, and upper end is water inlet 21, and 20 lower end of upper valve base and the upper end of lower valve base 40 are fixed, in lower valve base 40 Portion is hollow, and lower end is water outlet 41；Valve seat 30 is located inside upper valve base 20,30 top edge of valve seat and 20 inboard wall groove of upper valve base The fixed or edge of valve seat 30 and the inner sidewall of upper valve base 20 are fixed；Umbrella valve 10 is stuck on the hole among valve seat 30, umbrella Shape valve is fexible film in shape, umbellate form part 11 is inverted, and elastic deformation can occur.

A kind of infusion pipeline, the infusion pipeline include automatic flow-stop valve 70 described in the utility model, the automatic flow-stop The fluid output port pipeline 60 of the upper end connection infusion pipeline dropping funnel 50 of valve 70, the lower end of the automatic flow-stop valve 70 connects liquid Output pipe.

The utility model has an advantage that compared with prior art

1) the utility model combination actual clinical situation, the elastic effect for effectively utilizing umbrella valve realize infusion pipeline Fluid stopping control, prevents air from entering human body；

2) automatic flow-stop valve of the utility model relative to other patterns increases infusion flow, expands the scope of application.

3) the utility model reduces producting process difficulty relative to other pattern automatic flow-stop valves, improves fluid stopping effect.

Detailed description of the invention

Fig. 1 is floating-ball type fluid stopping scheme in the prior art: 1 ' dropping funnel, 2 ' floating balls.

Fig. 2 is air filter mode fluid stopping scheme in the prior art: 3 ' air filter films.

Fig. 3 is the utility model automatic flow-stop valve: 10 umbrella valves, 20 upper valve bases, 30 valve seats, 40 lower valve bases, 11 flexible thins Film, 21 water inlets, 41 water outlets.

Fig. 4 is the building block principle schematic diagram of the utility model automatic flow-stop valve: 50 dropping funnels, 60 infusion pipelines, 70 auto-stoppings Flow valve.

Fig. 5 is the operation principle schematic diagram of the utility model automatic flow-stop valve: 10 umbrella valves, 11 fexible films, 31 through-holes.

Fig. 6 is the utility model flow effect schematic diagram: 50 dropping funnels, 60 infusion pipelines, 70 automatic flow-stop valves.

Specific embodiment

The utility model is further described with reference to the accompanying drawings and embodiments.It should be noted that in embodiment not in detail The normal condition and method of explanation, the experiment condition and method routinely used according to fields personnel carry out.

Embodiment 1:

Infusion pipeline automatic flow-stop valve as shown in Figure 3, the flow-stop valve by umbrella valve 10, upper valve base 20, valve seat 30 and under Valve seat 40 is constituted.Upper valve base 20 is hollow, and upper end is water inlet 21, and 20 lower end of upper valve base and the upper end of lower valve base 40 are fixed, lower valve 40 inner hollows of seat, lower end are water outlet 41, and the space that water flow passes through is constituted between upper valve base 20 and lower valve base 40；Valve seat 30 Inside upper valve base 20,30 top edge of valve seat is fixed with 20 inboard wall groove of upper valve base；Umbrella valve 10 is stuck among valve seat 30 Kong Shang, umbrella valve are fexible film in shape, umbellate form part 11 is inverted, and elastic deformation can occur.

The building block principle of the utility model automatic flow-stop valve as shown in Figure 4, by 70 upper end of automatic flow-stop valve, i.e. upper valve base 20 Water inlet 21, connect with the conduit of 50 liquid outlet of dropping funnel；70 lower end of automatic flow-stop valve, the i.e. water outlet of lower valve base 40 41, infusion pipeline output end is connected, the infusion pipeline comprising automatic flow-stop valve is constituted.

The working principle of above-mentioned automatic flow-stop valve, as shown in Figure 5: when infusion starts, the medical fluid in dropping funnel is flowed into along conduit In flow-stop valve, when medical fluid pressure reaches the elastic limit of umbrella valve fexible film 11 in flow-stop valve, elasticity occurs for fexible film 11 Deformation, umbellate form valve are opened, and medical fluid can flow into human body through flow-stop valve by the through-hole 31 on valve seat 30.

Before infusion terminates, to keep the deformation of fexible film 11, fexible film 11 is extensive for medical fluid insufficient pressure in dropping funnel Umbellate form shape is restored, since umbrella valve 10 and 30 lower surface of valve seat fit closely, so that medical fluid stopping is flowed downward, that is, can guarantee medicine The automatic flow-stop effect of liquid, as shown in Figure 6.

The utility model effectively utilize umbrella valve elastic effect realize infusion pipeline fluid stopping control, prevent air into Enter human body；Relative to the automatic flow-stop valve of other patterns, producting process difficulty is reduced, improves fluid stopping effect, and do not influence medical fluid Flow velocity, the clinical scope of application are wider.

Claims (3)

1. a kind of infusion pipeline automatic flow-stop valve, which is characterized in that the flow-stop valve is by umbrella valve (10), upper valve base (20), valve Seat (30) and lower valve base (40) are constituted；Upper valve base (20) inner hollow, upper end are water inlet (21)；In lower valve base (40) inside Sky, lower end are water outlet (41)；Upper valve base (20) lower end and the upper end of lower valve base (40) are fixed, and the passable sky of water flow is formed Between；Valve seat (30) is located at upper valve base (20) inside, and valve seat (30) is fixed with upper valve base (20) inner wall；Umbrella valve (10) is in inversion Shape is stuck on the intermediate hole of valve seat (30), and umbellate form part (11) are fexible film, and elastic deformation can occur.

2. infusion pipeline automatic flow-stop valve according to claim 1, which is characterized in that the upper face of valve seat (30) with it is upper Valve seat (20) inboard wall groove is fixed or the edge of valve seat (30) and the inner sidewall of upper valve base (20) are fixed.

3. a kind of infusion pipeline, which is characterized in that the infusion pipeline includes automatic flow-stop valve (70) described in claim 1, institute The fluid output port pipeline (60) of upper end water inlet connection infusion pipeline dropping funnel (50) of automatic flow-stop valve (70) is stated, it is described automatic The lower end water outlet of flow-stop valve (70) connects liquid export line.