CN102813983A - Disposable self-exhausted bidirectional automatic-closing-type liquid-stop anti-blood-return transfusion device - Google Patents

Disposable self-exhausted bidirectional automatic-closing-type liquid-stop anti-blood-return transfusion device Download PDF

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Publication number
CN102813983A
CN102813983A CN2012102820025A CN201210282002A CN102813983A CN 102813983 A CN102813983 A CN 102813983A CN 2012102820025 A CN2012102820025 A CN 2012102820025A CN 201210282002 A CN201210282002 A CN 201210282002A CN 102813983 A CN102813983 A CN 102813983A
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China
Prior art keywords
solution stopping
liquid
valve port
following
transfusion
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CN2012102820025A
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Chinese (zh)
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CN102813983B (en
Inventor
雷冰
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Sichuan Puruisi Biological Science & Technology Co Ltd
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Sichuan Puruisi Biological Science & Technology Co Ltd
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Abstract

The invention relates to a disposable self-exhausted bidirectional automatic-closing-type liquid-stop anti-blood-return transfusion device, which comprises an upper transfusion catheter, a drip chamber and a lower transfusion catheter. The transfusion device is characterized in that a valve port is arranged at the lower part of the drip chamber; an upper retaining ring and a floating body are arranged in the drip chamber, a closing assembly is arranged below the floating body, and the closing assembly comprises a fixed seat, an upper liquid-stop sheet and a lower liquid-stop sheet; a lower retaining ring is arranged on the inner wall of the drip chamber, and the lower retaining ring is arranged between the upper liquid-stop sheet and the lower liquid-stop sheet; the valve port is arranged at the middle part of the lower retaining ring and is respectively matched with the upper liquid-stop sheet and the lower liquid-stop sheet to realize closing; and a push device is arranged between the valve port and the lower transfusion catheter. The disposable self-exhausted bidirectional automatic-closing-type liquid-stop anti-blood-return transfusion device has the positive effects that when normal transfusion is conducted, the valve port is opened in two directions and any influence is not caused to the transfusion process; and after liquid is fully transfused, air is prevented from entering a human body and causing medical accidents; when liquid enters the drip chamber again, the push device is only needed to be squeezed and smooth restoration can be realized; and more importantly, when the drip chamber is placed at a low position, the lower liquid-stop sheet is matched with the valve port to realize reverse closing.

Description

Disposable use is from the two-way automatic closed solution stopping blood return preventing infusion device of aerofluxus
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 the two-way automatic closed solution stopping blood return preventing infusion device of aerofluxus 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 the two-way automatic closed solution stopping blood return preventing infusion device of aerofluxus, 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 arranged with the sealing assembly, and the sealing assembly comprises holder, goes up solution stopping sheet and following solution stopping sheet; Following back-up ring is arranged on the dropping funnel inwall, and following back-up ring is between last solution stopping sheet and following solution stopping sheet; Following back-up ring middle part is a valve port, and valve port is realized sealing with last solution stopping sheet, following solution stopping sheet respectively.
Optimize, mounting means is axial socket between buoyancy aid and the sealing assembly, and axial free displacement is arranged between the two.
Optimize, between valve port and following transfusion catheter, be provided with pusher.
Optimize, the density of sealing assembly is 0.98-1.02.
Optimize, the cross sectional shape of last solution stopping sheet and following solution stopping sheet is a circular arc, adapt, following back-up ring the cross sectional shape of contact surface up and down be arc surface.
Optimize, the cross sectional shape of last solution stopping sheet and following solution stopping sheet is a straight line, adapt, following back-up ring contact surface up and down be the plane.
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; Sealing assembly in the dropping funnel is suspended in the liquid in the dropping funnel, and the valve port bidirectional opening can not have any influence to infusion process; After liquid is totally lost; The sealing assembly can descend along with the page of the liquid in the dropping funnel and reduce, and last solution stopping sector-meeting 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 reset 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, following solution stopping sector-meeting cooperates with valve port and realizes oppositely sealing.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1;
Fig. 2 is the structural representation of the sealing assembly among Fig. 1;
Fig. 3 is the vertical view of Fig. 1;
Fig. 4 is following back-up ring generalized section;
Fig. 5 is the structural representation of embodiment 2;
Fig. 6 is the structural representation of embodiment 3.
The specific embodiment
Embodiment 1:
To shown in Figure 4, during normal infusion, liquid gets into dropping funnel 20 from last transfusion catheter 1 like Fig. 1, from the valve port 21 of dropping funnel 20 bottoms to transfusion catheter 13 down, gets into human body through entry needle then again.
In this process; All the time have certain liquid in the dropping funnel 20 and be used for secluding air (this also is the original intention that designed it originally); In the present invention, sealing assembly (upper fixed seat 9, last solution stopping sheet 4, lower fixed seat 12, following solution stopping sheet 5 and connecting rod 8) just is bathed in this liquid the inside.
Because the proportion of sealing assembly and liquid phase are together, so the sealing assembly can be in suspended state, valve port 11 is in the bidirectional opening state, thereby the channel of normal infusion is had no obstruction.
The effect of buoyancy aid 7 is the axial wobble of restriction sealing assembly, and keeping the sealing assembly is vertical moving up and down, thus be designed to telescopic connected mode, and do not have the effect of power between the two, the relative displacement of vertical direction is arranged.Last back-up ring 3 is floating height of restriction buoyancy aid 7.
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 20 reduces gradually, and simultaneously, the sealing assembly also can be along with reduction, and last solution stopping sheet 4 is from back-up ring 10 is more and more nearer down; Finally, before liquid flow to end, last solution stopping sheet had sealed valve port 21; 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.
Be arranged with pusher 11 at valve port 21, the problem of solution is: if liquid flows to end, last solution stopping sheet 4 contacts with valve port 21 and is in closed state; When needs continue transfusion, hang up bottle, new liq enters in the dropping funnel 20; In theory, all parts can both reset with action, but have but gone wrong; The sealing assembly has no the action that resets, and its reason is: the adhesive force of going up between solution stopping sheet 4 and the valve port 21 has hindered homing action.
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 20, is using partially liq will go up solution stopping sheet 4 and is pushing open from valve port 21; 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 11 of design very easily: pusher 11 comes down to a transition conduit (upper end links to each other with valve port); With hands extruding pusher 11; It makes valve port 21 also to internal strain to internal strain, just to going up solution stopping sheet 4 down the direct effect of thrust is arranged; 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 20 enters into pusher 11, pinch pusher 11 with hands, bubble will be moved upwards up on the liquid level, has reached self-purging purpose.
When fortuitous event appears in transfusion device, such as falling or placing not at that time, dropping funnel 20 height can be lower than patient's health height, and at this moment, the flow direction of the liquid in the dropping funnel 20 will reverse: flowed to the upper end by dropping funnel 20 lower ends.Based on same reason, the sealing assembly can move up, and baffle ring 14 can be drawn close by downward back-up ring 10, and is final, following solution stopping sheet 5 with sealed valve port 21, so just realized reverse sealing, stopped the generation of blood back phenomenon.
In order to obtain better reverse sealing effect, going up solution stopping sheet 4, following solution stopping sheet 5 and following back-up ring 10 in the present embodiment all is that the flexible material (like silica gel) that adopts is processed, and contact surface is designed to circular arc.
Dosing mouth 2 is in order to add other drug design, the 6th, air filter.
Embodiment 2:
As shown in Figure 5, roughly the same with embodiment 1, difference is that the shape of buoyancy aid 7 changes to some extent, and its essential principle is identical with method for using.
Implement 3:
As shown in Figure 6, roughly the same with embodiment 1, difference is that the contact surface of solution stopping sheet 4, following solution stopping sheet 5 and following back-up ring 10 is designed to planar shaped.In addition, the shape of pusher 9 changes to some extent, changes the connection with certain angle into by being connected with the direct rounding off of dropping funnel 20, and its essential principle is identical with method for using.

Claims (5)

1. disposable use comprises transfusion catheter, dropping funnel, following transfusion catheter from the two-way automatic closed solution stopping blood return preventing infusion device of aerofluxus, 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 arranged with the sealing assembly, and the sealing assembly comprises holder, goes up solution stopping sheet and following solution stopping sheet; Following back-up ring is arranged on the dropping funnel inwall, and following back-up ring is between last solution stopping sheet and following solution stopping sheet; Following back-up ring middle part is a valve port, and valve port is realized sealing with last solution stopping sheet, following solution stopping sheet respectively; Between valve port and following transfusion catheter, be provided with pusher.
2. disposable use as claimed in claim 1 is characterized in that from the two-way automatic closed solution stopping blood return preventing infusion device of aerofluxus: mounting means is axial socket between buoyancy aid and the sealing assembly, and axial free displacement is arranged between the two.
3. according to claim 1 or claim 2 disposable use is characterized in that from the two-way automatic closed solution stopping blood return preventing infusion device of aerofluxus: the density of sealing assembly is 0.98-1.02.
Like claim 1 or 3 described disposable uses from the two-way automatic closed solution stopping blood return preventing infusion device of aerofluxus; It is characterized in that: the cross sectional shape of going up solution stopping sheet and following solution stopping sheet is a circular arc; Adapt, following back-up ring the cross sectional shape of contact surface up and down be arc surface.
Like claim 1 or 3 described disposable uses from the two-way automatic closed solution stopping blood return preventing infusion device of aerofluxus, it is characterized in that: the cross sectional shape of going up solution stopping sheet and following solution stopping sheet is a straight line, adapt, following back-up ring contact surface up and down be the plane.
CN201210282002.5A 2012-08-09 2012-08-09 Disposable self-exhausted bidirectional automatic-closing-type liquid-stop anti-blood-return transfusion device Active CN102813983B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105126191A (en) * 2015-08-19 2015-12-09 四川普瑞斯生物科技有限公司 Automatic exhausting, liquid-stopping and blood return-preventing drip chamber
CN105727393A (en) * 2016-01-06 2016-07-06 周常 Liquid stopper
CN109481795A (en) * 2018-12-29 2019-03-19 四川普瑞斯生物科技有限公司 The dual liquid that stops of one kind is from exhaust, safety dropping funnel

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2039970U (en) * 1988-11-26 1989-06-28 方正国 Intravenous drip injector
US5234414A (en) * 1992-09-28 1993-08-10 Hung Yung Feng Automatically closed dripping apparatus for intravenous administration
CN2574689Y (en) * 2002-10-21 2003-09-24 韦元强 Transfusion warner
CN201286915Y (en) * 2008-10-04 2009-08-12 杨梅芳 Disposable self-closing liquid-keeping transfusion device with valve opening sac
US20110218501A1 (en) * 2010-03-04 2011-09-08 Hsien-Tsung Wang Automatic intravenous fluid flow control device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2039970U (en) * 1988-11-26 1989-06-28 方正国 Intravenous drip injector
US5234414A (en) * 1992-09-28 1993-08-10 Hung Yung Feng Automatically closed dripping apparatus for intravenous administration
CN2574689Y (en) * 2002-10-21 2003-09-24 韦元强 Transfusion warner
CN201286915Y (en) * 2008-10-04 2009-08-12 杨梅芳 Disposable self-closing liquid-keeping transfusion device with valve opening sac
US20110218501A1 (en) * 2010-03-04 2011-09-08 Hsien-Tsung Wang Automatic intravenous fluid flow control device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105126191A (en) * 2015-08-19 2015-12-09 四川普瑞斯生物科技有限公司 Automatic exhausting, liquid-stopping and blood return-preventing drip chamber
CN105727393A (en) * 2016-01-06 2016-07-06 周常 Liquid stopper
CN105727393B (en) * 2016-01-06 2019-06-28 周常 A kind of liquid-stopping device
CN109481795A (en) * 2018-12-29 2019-03-19 四川普瑞斯生物科技有限公司 The dual liquid that stops of one kind is from exhaust, safety dropping funnel
CN109481795B (en) * 2018-12-29 2023-12-19 四川普瑞斯生物科技有限公司 Double liquid-stopping self-exhausting safety dropping funnel

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