CN102813984A

CN102813984A - Disposable self-exhaust two-way self-closed liquid-stop blood return-prevention infusion apparatus

Info

Publication number: CN102813984A
Application number: CN2012102820595A
Authority: CN
Inventors: 雷冰
Original assignee: Sichuan Puruisi Biological Science & Technology Co Ltd
Current assignee: Sichuan Puruisi Biological Science & Technology Co Ltd
Priority date: 2012-08-09
Filing date: 2012-08-09
Publication date: 2012-12-12
Anticipated expiration: 2032-08-09
Also published as: CN102813984B

Abstract

The invention relates to a disposable self-exhaust two-way self-closed liquid-stop blood return-prevention infusion apparatus, which comprises an upper infusion catheter, a dropping funnel and a lower infusion catheter and is characterized in that the lower part of the dropping funnel is provided with a valve port; a check ring and a floating body are arranged in the dropping funnel; the floating body is provided with a lower liquid-stop plate; the lower liquid-stop plate and the valve port are matched to realize sealing; and the check ring on the floating body is matched with a retainer ring to realize spacing. The disposable self-exhaust two-way self-closed liquid-stop blood return-prevention infusion apparatus has the positive effects that when normal infusion is performed, an infusion process cannot be influenced at all, and after liquid is infused, the floating body can be lowered along with the lowering of the level of the liquid in the dropping funnel, and an upper liquid-stop plate at the lower end of the floating body can be matched with the valve port to realize closing to prevent the air from entering the dropping funnel, thus, medical negligence cannot occur. When liquid enters the dropping funnel again, as long as a pusher is extruded, the floating body can smoothly float again, but before the disposable self-exhaust two-way self-closed liquid-stop blood return-prevention infusion apparatus is invented, the process is fairly complicated. More important, when the dropping funnel is arranged at a low position, the upper liquid-stop plate can be matched with the retainer ring to realize reverse closing.

Description

Disposable use is from aerofluxus bidirectional self-sealing enclosed solution stopping blood return preventing infusion device

Technical field

The present invention relates to a kind of medical apparatus and instruments, specifically disposable infusion device.

Background technology

Transfusion device is mainly used in to the patient and carries medicinal liquid, and its structure mainly comprises contact pin, last transfusion catheter, dropping funnel, following transfusion catheter; In use, if after the liquid on the last contact pin is totally lost, when needing to change liquid; Must be timely: before the liquid that in dropping funnel, store has dripped, let new liq enter into dropping funnel, otherwise can get into air in the dropping funnel; Thereby the formation bubble, bubble can be along with in the transfusion catheter under the entering smoothly of flowing of liquid, and bubble can get into human body through the entry needle pin hole like this; Thereby the formation aeroembolism, the physical and mental health and even the life security that can threaten the patient when serious.Simultaneously, the bubble that produces during dropping liquid also might get into human body.

For fear of above-mentioned situation, when practical application, medical worker, patient and entourage show great attention to the progress situation of transfusion, and nonetheless, the situation of error is still a lot.

In addition, also might occur the situation of other a kind of danger clinically: at ordinary times, patient's height is lower than the height of dropping funnel, under the effect of pressure, and just can normal infusion.In case both take a turn for the worse at height relationships, dropping funnel hangs down when putting (such as falling), and is same owing to pressure, and the blood in the patient body will be along following transfusion catheter entering dropping funnel.

Summary of the invention

The object of the invention provide a kind of disposable use from aerofluxus bidirectional self-sealing enclosed solution stopping blood return preventing infusion device remedying the deficiency of prior art, this transfusion device can realize lacking liquid or dropping funnel is low automatic bidirectional sealing when putting, thereby guarantees the safety of infusing.

The present invention for realizing the employed technical scheme of its purpose is:

Disposable use comprises transfusion catheter, dropping funnel, following transfusion catheter from aerofluxus bidirectional self-sealing enclosed solution stopping blood return preventing infusion device, and it is characterized in that: the dropping funnel bottom is a valve port; Be provided with back-up ring and buoyancy aid in the dropping funnel, buoyancy aid is provided with down the solution stopping sheet; Following solution stopping sheet and valve port cooperate realizes sealing; Baffle ring on the buoyancy aid and back-up ring cooperate realization spacing.

Optimize, baffle ring is provided with the solution stopping sheet.

Optimize, the top in last solution stopping sheet cross section is circular-arc; Adapt, the bottom in back-up ring cross section is circular-arc;

Optimize, between valve port and following transfusion catheter, be provided with pusher.

Optimize, pusher is the transition conduit between valve port and the following transfusion catheter, and the internal diameter of transition conduit is 0.1mm ~ 20mm.

Good effect of the present invention is: during normal infusion; Buoyancy aid in the dropping funnel can receive buoyancy, swims in the liquid in the dropping funnel, can any influence not arranged to infusion process; After liquid is totally lost; Buoyancy aid can descend along with the page of the liquid in the dropping funnel and reduce, and the last solution stopping sector-meeting of its lower end and valve port cooperate realizes sealing, prevents that air admission from causing malpractice.When getting into liquid once more in the dropping funnel, only need the extruding pusher, just can let buoyancy aid floating once more smoothly, before the present invention occurred, this process was quite loaded down with trivial details.The more important thing is that when dropping funnel is low when putting, last solution stopping sector-meeting cooperates with back-up ring and realizes oppositely sealing.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the invention 1;

Fig. 2 is the component diagram among Fig. 1;

Fig. 3 is the vertical view of Fig. 1;

Fig. 4 is the A-A generalized section of Fig. 3;

Fig. 5 is the generalized section of the back-up ring among the embodiment 1;

Fig. 6 is the structural representation of embodiment 2;

Fig. 7 is the structural representation of embodiment 3;

Fig. 8 is the structural representation of embodiment 4;

Fig. 9 is the structural representation of embodiment 5;

Figure 10 is the structural representation of embodiment 6.

The specific embodiment

Embodiment 1:

During normal infusion, liquid gets into dropping funnel 11 from last transfusion catheter 1, from the valve port 12 of dropping funnel 11 bottoms to transfusion catheter 13 down, gets into human body through entry needle then again.

In this process, have certain liquid in the dropping funnel 11 all the time and be used for secluding air (this also is the original intention that designed it originally), in the present invention, buoyancy aid 4 just is bathed in this liquid the inside.

Buoyancy aid 4 receives the buoyancy of liquid effect, and is floating, thereby the channel of normal infusion is had no obstruction.Simultaneously, we can not let this floating behavior break away from control, so, on the inwall of dropping funnel 11, be provided with back-up ring 3, baffle ring 14 is arranged on the buoyancy aid 4, in fact back-up ring 3 is exactly the floating height of having controlled baffle ring 14.

Suppose that liquid has been totally lost, but the no one notices that our invention just has following action: do not have the entering of upper end liquid; Liquid levels in the dropping funnel 11 reduces gradually, and simultaneously, buoyancy aid 4 also can be along with reduction, and following solution stopping sheet 6 is more and more nearer from valve port 12; Finally, before liquid flow to end, following solution stopping sheet 6 had sealed valve port 12; No matter be liquid or air, all can not have got into down transfusion catheter 7, the patient does not have the risk of input air.

When fortuitous event appears in transfusion device, such as falling or placing not at that time, dropping funnel 11 height can be lower than patient's health height, and at this moment, the flow direction of the liquid in the dropping funnel 11 will reverse: flowed to the upper end by dropping funnel 11 lower ends.Based on same reason, buoyancy aid 4 can move up, and baffle ring 14 can be drawn close to back-up ring 3, and the last solution stopping sheet 5 that we are provided with also can be drawn close until contact to back-up ring 3, has so just realized reverse sealing, has stopped the generation of blood back phenomenon.In order to obtain better reverse sealing effect, going up solution stopping sheet 5 in the present embodiment all is that the flexible material (like silica gel) that adopts is processed with back-up ring 3, and both contact surfaces are designed to circular arc.

Dosing mouth 2 is in order to add other drug design, the 7th, air filter.

Embodiment 2:

As shown in Figure 6, roughly the same with embodiment 1, difference is not to be provided with solution stopping sheet 5, and reverse sealing only relies on baffle ring 14 and back-up ring 3 to realize, sealing effectiveness can differ from so certainly, and present embodiment only is a basic effect, can not reach optimum efficiency.

Embodiment 3:

As shown in Figure 7, to compare with embodiment 2 with embodiment 1, difference is that baffle ring 14 shapes are had any different; Be arranged with pusher 9 at valve port 12, the problem of solution is: if liquid flows to end, following solution stopping sheet 6 contacts with valve port 12 and is in closed state; When needs continue transfusion, hang up bottle, new liq enters in the dropping funnel 11; In theory, all parts can both reset with action, but have but gone wrong; Buoyancy aid 4 has no the action that resets, and its reason is: because size is limit the adhesive force under the buoyancy of buoyancy aid 9 designs is not enough to overcome between solution stopping sheet 6 and the valve port 12.

Before the present invention occurred, in order to reset smoothly, the indigenous method that medical personnel generally adopt was: pinch down the end of transfusion catheter 13 with a hands, and can't be near; Good more far more, another is pushing transfusion catheter 13, catches up with the liquid in it toward dropping funnel 11, is using partially liq will descend solution stopping sheet 6 to push open from valve port 12; Can imagine that this is the action (pipe is very thin, intensity) of a suitable consumption power; Nurse often strength is little again, so the consumption of time is also very long.

We just can address this problem by the pusher 9 of design very easily: pusher 9 comes down to a transition conduit (upper end links to each other with valve port); With hands extruding pusher 9; It makes valve port 12 also to internal strain to internal strain, just following solution stopping sheet 6 is had the direct effect of thrust; Simultaneously the liquid in it also can have the effect of thrust to last solution stopping sheet 4, laborsavingly saves time again.

The another one effect of pusher 9: if the bubble that produces in the dropping funnel 11 enters into pusher 9, pinch pusher 9 with hands, bubble will be moved upwards up on the liquid level, has reached self-purging purpose.

Be worth explanation the time, present embodiment equally not design go up solution stopping sheet 5, reverse sealing also is basic realization, if realize best sealing effect, only needs to add at baffle ring 14 and loads onto solution stopping sheet 5 and get final product, this is given unnecessary details with regard to no longer lifting embodiment.

Embodiment 4:

As shown in Figure 8 and implemented 4 similarly, difference is that the shape of pusher 9 changes to some extent, changes the connection with certain angle into by rounding off, and its essential principle is identical with method for using.In addition, present embodiment is provided with solution stopping sheet 5.

Embodiment 5:

As shown in Figure 9, similar with embodiment 4, difference is that difference is that baffle ring 14 shapes are distinguished to some extent.

Embodiment 5:

As shown in Figure 9, in the present embodiment, for better forward sealing effect is arranged, the area of valve port 12 is reduced, simultaneously, designed bulb on the following solution stopping valve and cooperated with it and realize sealing.

Claims

1. disposable use comprises transfusion catheter, dropping funnel, following transfusion catheter from aerofluxus bidirectional self-sealing enclosed solution stopping blood return preventing infusion device, and it is characterized in that: the dropping funnel bottom is a valve port; Be provided with back-up ring and buoyancy aid in the dropping funnel, buoyancy aid is provided with down the solution stopping sheet; Following solution stopping sheet and valve port cooperate realizes sealing; Baffle ring on the buoyancy aid and back-up ring cooperate realization spacing.

2. disposable use as claimed in claim 1 is from aerofluxus bidirectional self-sealing enclosed solution stopping blood return preventing infusion device, and it is characterized in that: baffle ring is provided with the solution stopping sheet.

3. disposable use as claimed in claim 2 is characterized in that from aerofluxus bidirectional self-sealing enclosed solution stopping blood return preventing infusion device: the top of going up solution stopping sheet cross section is circular-arc; Adapt, the bottom in back-up ring cross section is circular-arc.

4. according to claim 1 or claim 2 disposable use is characterized in that: between valve port and following transfusion catheter, be provided with pusher from aerofluxus bidirectional self-sealing enclosed solution stopping blood return preventing infusion device.

5. disposable use as claimed in claim 4 is characterized in that from aerofluxus bidirectional self-sealing enclosed solution stopping blood return preventing infusion device: pusher is the transition conduit between valve port and the following transfusion catheter, and the internal diameter of transition conduit is 0.1mm ~ 20mm.