CN103656781A - Venous transfusion one-way check device - Google Patents
Venous transfusion one-way check device Download PDFInfo
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- CN103656781A CN103656781A CN201210353381.2A CN201210353381A CN103656781A CN 103656781 A CN103656781 A CN 103656781A CN 201210353381 A CN201210353381 A CN 201210353381A CN 103656781 A CN103656781 A CN 103656781A
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- fluid stopping
- end socket
- latex
- diaphragm
- transfusion
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Abstract
The invention relates to a disposable venous transfusion one-way check device. According to the venous transfusion one-way check device, a one-way check unit which is integrated with a capillary tube is arranged at the connecting end of the capillary tube and an infusion tube of a disposable venous transfusion device, so that liquid medicine reflux in veins when a patient sits down, stands up or even walks after or during the transfusion process. The venous transfusion one-way check device changes the structure of the disposable transfusion device little, is simple in structure, low in cost and applicable to industrial production, does not change the working habit of medical care personnel, facilitates popularization and application, improves the working efficiency, saves puncture needles and reliefs patients from pain.
Description
Technical field
The object of the present invention is to provide the unidirectional fluid stopping device of a kind of venous transfusion, particularly a kind of can prevention in whole infusion process instead flowed, the unidirectional fluid stopping device of anti-return blood.
Background technology
The disposable intravenous infusion set that at present venous transfusion field is used, does not possess in infusion process and during infusion-completed, prevents the anti-blood function that flows back to; In transfusion, often there is blood back phenomenon to occur, bring unexpected trouble to patient and medical worker; For this reason, in this field, many searchers and antecessor have been there is, their Design and manufacture multiple during for venous transfusion process and infusion-completed, automatic flow-stop, prevent the anti-device that flows back to blood, solve transfusion blood back problem, to reduce the cost of labor (reducing transfusion entourage) of transfusion nursing; Promote infusion safety, improve service quality etc., reduce medical personnel's fruitless labour etc.; Solving at present the anti-method that flows back to blood phenomenon of transfusion has: the one, in Murphy's dropper, increase plugging device, as ball float, floating plug, flap valve etc., in order to when the infusion-completed, ball floats etc. decline with the medicinal liquid face in Murphy's dropper, shutoff lower liquid outlet, make not enough decline of medicinal liquid in tube for transfusion, holding tube internal pressure prevents the anti-blood that flows back to; This method is utilized gravity principle, can realize easily cut-off, be effectively applicable to be seated or the patient of recumbency transfusion, but in patient posture change, as stand, walk about, or sit up from the state of couching, all can cause the anti-blood that flows back to.The 2nd, on Murphy's dropper tube for transfusion once, one-way non-return valve is installed, in infusion process and during infusion-completed, stop the anti-return blood of anti-stream; In this, method generally adopts rubber finger sleeve, spring plug, elastic force door etc., and the shortcoming of these class methods is that flowing of medicinal liquid had to certain resistance, affects the mobility of medicinal liquid; The 3rd, adopt electronic equipment to realize the anti-return blood of automatic cut-off of venous transfusion, its basic skills is installation detecting device on tube for transfusion, detects in real time transfusion situation, finds in time infusion-completed, start the stuck tube for transfusion of electrical installation, realize cut-off and prevent the anti-blood that flows back to; These class methods want omnidistance power consumption to survey, and do not meet environmental protection and energy saving principle, and cost are higher; The 4th, directly adopt precision transfusion pump, not only can realize accurate control, prevent the anti-blood that flows back to, also realize precision transfusion and infusion management; This method makes simple question complicated, run in the opposite direction with the target of energy-conserving and environment-protective consumption reduction, but also need user to have certain technical ability, the more important thing is that this method is non-gravity infusion, natural namely science, lost the science that naturally also just lost; Lose gravity, also just lost safety.Therefore in venous transfusion, Design and manufacture can be avoided above-mentioned defect, and it is very necessary can stoping again the anti-unidirectional fluid stopping device of single intravenous infusion that flows back to the generation of blood phenomenon.
Summary of the invention
The object of the present invention is to provide a kind of can automatic unidirectional fluid stopping in venous transfusion, the unidirectional fluid stopping device of anti-return blood, in order to achieve the above object, technical scheme of the present invention is achieved in that unidirectional fluid stopping device 1, it is mainly by mozzle 1-1, water conservancy diversion end socket 1-2, fluid stopping latex diaphragm 1-3 forms; Its unidirectional fluid stopping device 1, is arranged on the capillary vessel 1-5 of connecting puncture needle and the connection end of tube for transfusion; Its overall appearance is that centre is thicker, the circular geometry that two ends are thinner; Its thinner rear and front end is respectively feed tube 1-1-1 and drain pipe 1-2-11; Feed tube 1-1-1 is connected with lower tube for transfusion tapered joint head 1-4; Drain pipe 1-2-11 is connected with capillary tube 1-5; Its structural relation is that mozzle 1-1 consists of feed tube 1-1-1 and blower inlet casing 1-1-2; Water conservancy diversion end socket 1-2 one end and blower inlet casing 1-1-2 are assemblied in one, and the other end is the drain pipe 1-2-11 of unidirectional fluid stopping device 1; Unidirectional fluid stopping latex diaphragm 1-3, in blower inlet casing 1-1-2, is assemblied between the fluid stopping latex diaphragm limiting stand 1-2-2 of its nick arc fluid stopping sealing surface 1-1-2-4 and water conservancy diversion end socket 1-2.
Described mozzle 1-1, its feed tube 1-1-1 section is thinner, is connected with the tapered joint head 1-4 of tube for transfusion, and its feed tube inlet 1-1-1-1 internal diameter is thicker, is inwardly taper pipe laying 1-1-1-2 and its equal diameter pipeline 1-1-1-3; The tapered joint head 1-4 of its taper pipe laying and tube for transfusion matches; Feed tube 1-1-1 external diameter equates, by inclined-plane excessive section 1-1-1-4, is excessively blower inlet casing 1-1-2; Blower inlet casing 1-1-2 external diameter is thicker, is respectively diversion cavity 1-1-2-1, pod apertures 1-1-2-2 in its shell, fluid stopping seal 1-1-2-3, nick arc sealing surface 1-1-2-4, diversion column stopper slot 1-1-2-5, the 1-1-2-6 of diversion chamber, the anchor ring 1-1-2-7 of diversion chamber, water conservancy diversion end socket installing port 1-1-2-8; Diversion cavity 1-1-2-1, by center equal diameter pipeline 1-1-1-3, is communicated with formation with a plurality of pod apertures 1-1-2-2 of periphery; The liquid outlet of pod apertures 1-1-2-2 is fluid stopping seal 1-1-2-3; Array distribution is on nick arc sealing surface 1-1-2-4 in the form of a ring for a plurality of fluid stopping seal 1-1-2-3, and itself and fluid stopping latex diaphragm 1-3 fit; The opposite side of fluid stopping latex diaphragm 1-2 is the 1-1-2-6 of diversion chamber; The center of nick arc sealing surface 1-1-2-4 is fluid stopping latex film sheet post stopper slot 1-1-2-5; The port of blower inlet casing 1-1-2 is the installing port 1-1-2-7 of water conservancy diversion end socket 1-2.
Described water conservancy diversion end socket 1-2, it is by fluid stopping latex diaphragm limited post 1-2-1, fluid stopping latex diaphragm limiting stand 1-2-2, latex diaphragm position limiting pile 1-2-3, position limiting pile carrier side 1-2-4, end socket flow-guiding mouth 1-2-5, end socket pod apertures 1-2-6, end socket diversion cavity 1-2-7, end socket is installed outer ring surface 1-2-8, mounting limit platform 1-2-9, inclined-plane is section 1-2-10 excessively, drain pipe 1-2-11, fluid pipeline 1-2-12, liquid outlet 1-2-13 forms; Fluid stopping latex diaphragm limited post 1-2-1, during installation, penetrate in fluid stopping latex diaphragm 1-3 center spacing hole 1-3-1, its termination embeds in fluid stopping latex diaphragm stopper slot 1-1-2-5, and fluid stopping latex diaphragm limiting stand 1-2-2 is pressed in the centre of fluid stopping latex diaphragm 1-3; The extension of fluid stopping latex diaphragm limiting stand 1-2-2 is diaphragm position limiting pile 1-2-3, and latex diaphragm position limiting pile 1-2-3 is positioned on position limiting pile carrier side 1-2-4, and it is structure as a whole; In the carrier side of latex diaphragm position limiting pile 1-2-3 periphery, array has a plurality of end socket flow-guiding mouth 1-2-5 in the form of a ring, and end socket flow-guiding mouth 1-2-5 is the inlet of end socket pod apertures 1-2-6 and is attached thereto logical; A plurality of end socket pod apertures 1-2-6 are connected with the fluid pipeline 1-2-12 at center, form end socket diversion cavity 1-2-7, and the medicinal liquid in end socket diversion cavity 1-2-7 flows to fluid pipeline 1-2-12, from liquid outlet 1-2-13, flows out; The installation outer ring surface 1-2-8 of water conservancy diversion end socket 1-2 embeds in the water conservancy diversion end socket installing port 1-1-2-8 of diversion shell 1-1-2 when assembling, and mounting limit platform 1-2-9 and end socket installing port 1-1-2-8 fit tightly; Drain pipe 1-2-11 is connected with capillary vessel 1-5.
Described unidirectional fluid stopping diaphragm 1-3, it is thinner latex flat circle lamellar structure, by mounting limit hole, center 1-3-1, the unilateral 1-3-2 of latex film, latex diaphragm outer ring surface 1-3-3 forms; In assembly, the dress spacing hole 1-3-1 that wherein feels at ease is sleeved on fluid stopping diaphragm limited post 1-2-1, mounting limit hole, center 1-3-1 periphery pressing diaphragm is below fluid stopping latex diaphragm limiting stand 1-2-2, a side of the unilateral 1-3-2 of latex film fits on nick arc sealing surface 1-1-2-4, another side is positioned at the 1-1-2-6 of diversion chamber, the diameter of latex diaphragm outer ring surface 1-3-3 equates with the internal diameter of the anchor ring 1-1-2-7 of diversion chamber, and formation is sealed and matched
Beneficial effect:
The present invention is simple in structure, easily manufactures low cost of manufacture; Latex good springiness sealing fluid stopping is effective; The soft resistance of quality is little, and medicinal liquid circulation is smooth and easy; Avoided transfusion blood back phenomenon, made to infuse safer; Reduce medical personnel's fruitless labour, improved nursing service quality; Reduce the misery that again punctures and bring to patient because of blood back blood coagulation, saved transfusion puncture needle head.
Accompanying drawing explanation:
Fig. 1 is that unidirectional fluid stopping device front view also can be used as to select and wants accompanying drawing.
The unidirectional fluid stopping device of Fig. 2 cutaway view.
Fig. 3 is mozzle structure chart.
Fig. 4 latex diaphragm figure.
Fig. 5 is water conservancy diversion end socket front view.
Fig. 6 water conservancy diversion end socket side view.
1 unidirectional fluid stopping device
1-1 mozzle
1-1-1 feed tube
1-1-1-1 feed tube inlet
1-1-1-2 taper pipe laying
1-1-1-3 equal diameter pipeline
Excessive section of 1-1-1-4 inclined-plane
1-1-2 blower inlet casing
1-1-2-1 diversion cavity
1-1-2-2 pod apertures
1-1-2-3 fluid stopping seal
1-1-2-4 nick arc sealing surface
1-1-2-5 diversion column stopper slot
1-1-2-6 diversion chamber
1-1-2-7 diversion chamber anchor ring
1-1-2-8 water conservancy diversion end socket installing port
1-2 water conservancy diversion end socket
1-2-1 fluid stopping latex diaphragm limited post
1-2-2 fluid stopping latex diaphragm limiting stand
1-2-3 latex diaphragm position limiting pile
1-2-4 position limiting pile carrier side
1-2-5 end socket flow-guiding mouth
1-2-6 end socket pod apertures
1-2-7 end socket diversion cavity
1-2-8 end socket is installed outer ring surface
1-2-9 mounting limit platform
Excessive section of 1-2-10 inclined-plane
1-2-11 drain pipe
1-2-12 fluid pipeline
1-2-13 liquid outlet
1-3 fluid stopping latex diaphragm
1-3-1 center spacing hole
1-3-2 latex film is unilateral
1-3-3 latex diaphragm outer ring surface
1-4 tapered joint head
The 1-5 capillary vessel that punctures
Specific embodiment
Structure embodiment; The automatic unidirectional fluid stopping device 1 of venous transfusion provided by the present invention, it is by mozzle 1-1, water conservancy diversion end socket 1-2, unidirectional fluid stopping latex diaphragm 1-3 is assembled, and the integral body of this assembly is thicker in the middle of forming, the circular geometry outward appearance that two ends are thinner; Its thinner rear and front end is respectively feed tube 1-1-1 and drain pipe 1-2-12; In this case, this assembly is arranged on the link of capillary vessel 1-5 and lower tube for transfusion taper connection end 1-4, and its thinner feed tube 1-1-1 is connected with tube for transfusion tapered joint head 1-4; Its thinner drain pipe 1-2-12 is connected with capillary vessel 1-5; This assembly also can be arranged on the Murphy's dropper of disposable transfusion device and other any position of the tube for transfusion between piercing needle; The mozzle 1-1 of unidirectional fluid stopping device 1, consists of feed liquor connection tube 1-1-1 and blower inlet casing 1-1-2; Feed liquor connection tube 1-1-1 is the feed liquor link of unidirectional fluid stopping device 1; From input duct 1-1-1-2, be inwardly respectively equal diameter pipeline 1-1-1-3, pod apertures 1-1-2-1; Equal diameter pipeline 1-1-1-3 is communicated with a plurality of pod apertures 1-1-2-1, forms diversion cavity 1-1-2-2; Water conservancy diversion aperture 1-1-2-3 is diversion cavity 1-1-2-2 liquid outlet, is also fluid stopping seal; A plurality of fluid stopping seal 1-1-2-3 are distributed on nick arc fluid stopping sealing surface 1-1-2-4 in the form of a ring, nick arc fluid stopping sealing surface 1-1-2-4 is forward the 1-1-2-6 of diversion chamber, has latex fluid stopping diaphragm 1-3 interval between the 1-1-2-6 of diversion chamber and nick arc sealing surface 1-1-2-4; Latex fluid stopping diaphragm 1-3, one-way sealing fluid stopping seal 1-1-2-3; The 1-1-2-5 of diversion chamber, by the end socket flow-guiding mouth 1-2-5 on diaphragm position limiting pile carrier side 1-2-4, is communicated with a plurality of end socket pod apertures 1-2-6; A plurality of end socket pod apertures 1-2-6 are communicated with fluid pipeline 1-2-12, form end socket diversion cavity 1-2-7; The fluid pipeline 1-2-12 of end socket diversion cavity 1-2-7 is communicated with capillary vessel 1-5.
In infusion process, medicinal liquid flows in diversion cavity 1-1-2-1 from feed tube 1-1-1; Under pressure, push unidirectional fluid stopping latex diaphragm 1-3 open, flow in the 1-1-2-6 of diversion chamber; The 1-1-2-6 of Zai Cong diversion chamber, by end socket flow-guiding mouth 1-2-5, flows in end socket diversion cavity 1-2-7; From the fluid pipeline 1-2-12 being communicated with it, flow out again; The flow channel of medicinal liquid in unidirectional fluid stopping device 1 is unimpeded; Unidirectional fluid stopping latex diaphragm 1-3 quality is soft, elasticity is good, when medicinal liquid flows to liquid outlet 1-2-13 direction, only need small mobilization force, can promote unidirectional fluid stopping latex diaphragm 1-3 bending forward, leave nick arc sealing surface 1-1-2-4, open flow channel, medicinal liquid is flowed unblocked; When medicinal liquid stops flowing, the unidirectional fluid stopping diaphragm of latex under the effect of self elastic force, reinstatement, the fluid stopping seal 1-1-2-3 on airtight nick arc sealing surface 1-1-2-4; When medicinal liquid is anti-while flowing, liquid medicine flow passages that the unidirectional fluid stopping diaphragm of latex is airtight, has stoped that medicinal liquid is counter to flow, and has avoided anti-generation of flowing back to blood phenomenon.
The present invention operates and uses simply, and because of its union joint Integral design with puncture needle capillary soft tube, and small volume, what variation the non-careful imperceptible and traditional disposable transfusion device of user of observing has, and does not change in the use original use habit; Common disposable intravenous infusion set is used in conjunction with the capillary soft tube piercing needle with unidirectional fluid stopping device, can solve the anti-blood phenomenon that flows back to of venous transfusion.
The present invention is simple in structure, can adopt injection moulding to produce, one-shot forming; Its injection mold is simple, can adopt and split even note of multimode, and batch production, meets supply; Can also use automated assembly line to produce, reduce production costs, improve output, save labour force etc.
Claims (4)
1. the unidirectional fluid stopping device of venous transfusion (1) described in, is characterized in that: it is by mozzle (1-1), water conservancy diversion end socket (1-2), and unidirectional fluid stopping diaphragm (1-3) forms; Unidirectional fluid stopping device (1), is arranged on the capillary vessel (1-5) of connecting puncture needle and the connection end of tube for transfusion; Its overall appearance is that centre is thicker, the circular geometry that two ends are thinner; Its thinner rear and front end is respectively feed tube (1-1-1) and drain pipe (1-2-11); Feed tube (1-1-1) is connected with lower tube for transfusion tapered joint head (1-4); Drain pipe (1-2-11) is connected with capillary vessel 1-5; Its structural relation is that mozzle (1-1) consists of feed liquor connection tube (1-1-1) and blower inlet casing (1-1-2); Water conservancy diversion end socket (1-2) one end and blower inlet casing (1-1-2) are assemblied in one, and the other end is the drain pipe (1-2-11) of unidirectional fluid stopping device (1); Unidirectional fluid stopping latex diaphragm (1-3), in water conservancy diversion shell (1-1-2), is assemblied between its nick arc fluid stopping sealing surface (1-1-2-4) and the fluid stopping diaphragm limiting stand (1-2-2) of water conservancy diversion end socket (1-2).
2. according to the mozzle (1-1) of the unidirectional fluid stopping device of the venous transfusion described in claim 1 (1), its feed tube (1-1-1) section is thinner, be connected with the tapered joint head (1-4) of tube for transfusion, its feed tube inlet (1-1-1-1) internal diameter is thicker, is inwardly taper pipe laying (1-1-1-2) and its equal diameter pipeline (1-1-1-3); The tapered joint head (1-4) of its taper pipe laying and tube for transfusion matches; Feed tube (1-1-1) external diameter equates, by the excessive section in inclined-plane (1-1-1-4), is excessively blower inlet casing (1-1-2); Blower inlet casing (1-1-2) external diameter is thicker, in its shell, be respectively diversion cavity (1-1-2-1), pod apertures (1-1-2-2), fluid stopping seal (1-1-2-3), nick arc sealing surface (1-1-2-4), diversion column stopper slot (1-1-2-5), diversion chamber (1-1-2-6), diversion chamber's anchor ring (1-1-2-7), water conservancy diversion end socket installing port (1-1-2-8); Diversion cavity (1-1-2-1), by center equal diameter pipeline (1-1-1-3), is communicated with formation with a plurality of pod apertures (1-1-2-2) of periphery; The liquid outlet of pod apertures (1-1-2-2) is fluid stopping seal (1-1-2-3); A plurality of fluid stopping seals (1-1-2-3) in the form of a ring array distribution are upper at nick arc sealing surface (1-1-2-4), and itself and fluid stopping latex diaphragm (1-3) fit; The opposite side of fluid stopping latex diaphragm (1-2) is diversion chamber (1-1-2-6), and the center of nick arc sealing surface (1-1-2-4) is fluid stopping latex film sheet post stopper slot (1-1-2-5); The port of blower inlet casing (1-1-2) is the installing port (1-1-2-7) of water conservancy diversion end socket (1-2).
3. according to the water conservancy diversion end socket (1-2) of the unidirectional fluid stopping device of the venous transfusion described in claim 1 (1), it is characterized in that: it is by fluid stopping latex diaphragm limited post (1-2-1), fluid stopping latex diaphragm limiting stand (1-2-2) latex diaphragm position limiting pile (1-2-3), position limiting pile carrier side (1-2-4), end socket flow-guiding mouth (1-2-5), end socket pod apertures (1-2-6), end socket diversion cavity (1-2-7), end socket is installed anchor ring (1-2-8), mounting limit platform (1-2-9), inclined-plane is section (1-2-10) excessively, drain pipe (1-2-11), fluid pipeline (1-2-12), liquid outlet (1-2-13) forms, fluid stopping latex diaphragm limited post (1-2-1), during installation, penetrate in the center spacing hole (1-3-1) of fluid stopping latex diaphragm (1-3), its termination embeds in fluid stopping latex diaphragm stopper slot (1-1-2-5), and fluid stopping latex diaphragm limiting stand (1-2-2) is pressed in the centre of fluid stopping latex diaphragm (1-3), the extension of fluid stopping latex diaphragm limiting stand (1-2-2) is latex diaphragm position limiting pile (1-2-3), and latex diaphragm position limiting pile (1-2-3) is positioned on position limiting pile carrier side (1-2-4), and it is structure as a whole, in the carrier side of latex diaphragm position limiting pile (1-2-3) periphery, array has a plurality of end socket flow-guiding mouths (1-2-5) in the form of a ring, and end socket flow-guiding mouth (1-2-5) is the inlet of end socket pod apertures (1-2-6) and is attached thereto logical, a plurality of end socket pod apertures (1-2-6) are connected with the fluid pipeline (1-2-12) at center, form end socket diversion cavity (1-2-7), medicinal liquid in end socket diversion cavity (1-2-7) flows to fluid pipeline (1-2-12), from liquid outlet (1-2-13), flows out, the installation outer ring surface (1-2-8) of water conservancy diversion end socket (1-2), when assembling, embed in the water conservancy diversion end socket installing port (1-1-2-8) of blower inlet casing (1-1-2), mounting limit platform (1-2-9) fits tightly with end socket installing port (1-1-2-8), drain pipe (1-2-11) is connected with capillary vessel (1-5).
4. according to the unidirectional fluid stopping latex diaphragm (1-3) of the intravenous infusion device (1) described in claim 1, it is characterized in that: it is thinner latex flat circle lamellar structure, by mounting limit hole, center (1-3-1), latex film unilateral (1-3-2), latex diaphragm outer ring surface (1-3-3) forms; In assembly, the dress spacing hole (1-3-1) of wherein feeling at ease is sleeved on fluid stopping latex diaphragm limited post (1-2-1), mounting limit hole, center (1-3-1) periphery pressing diaphragm is below fluid stopping latex diaphragm limiting stand (1-2-2), one side of latex film unilateral (1-3-2) fits on nick arc sealing surface (1-1-2-4), another side is positioned at diversion chamber (1-1-2-6), the diameter of latex diaphragm outer ring surface (1-3-3) equates with the internal diameter of diversion chamber's anchor ring (1-1-2-7), and formation is sealed and matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210353381.2A CN103656781B (en) | 2012-09-21 | 2012-09-21 | The unidirectional fluid stopping device of a kind of venous transfusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210353381.2A CN103656781B (en) | 2012-09-21 | 2012-09-21 | The unidirectional fluid stopping device of a kind of venous transfusion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103656781A true CN103656781A (en) | 2014-03-26 |
| CN103656781B CN103656781B (en) | 2016-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210353381.2A Expired - Fee Related CN103656781B (en) | 2012-09-21 | 2012-09-21 | The unidirectional fluid stopping device of a kind of venous transfusion |
Country Status (1)
| Country | Link |
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| CN (1) | CN103656781B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106492306A (en) * | 2016-12-28 | 2017-03-15 | 天津哈娜好医材有限公司 | Transfusion device back-flow preventer and its using method |
| CN106668977A (en) * | 2016-12-28 | 2017-05-17 | 天津哈娜好医材有限公司 | Check valve used for infusion apparatus and use method of check valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4535820A (en) * | 1984-05-24 | 1985-08-20 | Burron Medical Inc. | Normally closed check valve |
| US4610275A (en) * | 1985-11-04 | 1986-09-09 | Beecher William H | Valve for relieving pressure or checking reverse flow |
| DE3922291C1 (en) * | 1989-07-06 | 1990-11-08 | Pfrimmer-Viggo Gmbh & Co Kg, 8520 Erlangen, De | Medical non-return valve - has diaphragm moved against lip seal around valve axis |
| EP0947752A1 (en) * | 1998-03-30 | 1999-10-06 | Medex | Threshold valve |
| CN201267678Y (en) * | 2008-07-18 | 2009-07-08 | 上海双鸽实业有限公司 | Disposal one-way valve for infusion |
| CN202270260U (en) * | 2011-09-19 | 2012-06-13 | 上海美华医疗器具股份有限公司 | General anti-countercurrent valve |
| CN202761808U (en) * | 2012-09-21 | 2013-03-06 | 郑州昊能科技有限公司 | Single-way stop-flowing device for venous transfusion |
-
2012
- 2012-09-21 CN CN201210353381.2A patent/CN103656781B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4535820A (en) * | 1984-05-24 | 1985-08-20 | Burron Medical Inc. | Normally closed check valve |
| US4610275A (en) * | 1985-11-04 | 1986-09-09 | Beecher William H | Valve for relieving pressure or checking reverse flow |
| DE3922291C1 (en) * | 1989-07-06 | 1990-11-08 | Pfrimmer-Viggo Gmbh & Co Kg, 8520 Erlangen, De | Medical non-return valve - has diaphragm moved against lip seal around valve axis |
| EP0947752A1 (en) * | 1998-03-30 | 1999-10-06 | Medex | Threshold valve |
| CN201267678Y (en) * | 2008-07-18 | 2009-07-08 | 上海双鸽实业有限公司 | Disposal one-way valve for infusion |
| CN202270260U (en) * | 2011-09-19 | 2012-06-13 | 上海美华医疗器具股份有限公司 | General anti-countercurrent valve |
| CN202761808U (en) * | 2012-09-21 | 2013-03-06 | 郑州昊能科技有限公司 | Single-way stop-flowing device for venous transfusion |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106492306A (en) * | 2016-12-28 | 2017-03-15 | 天津哈娜好医材有限公司 | Transfusion device back-flow preventer and its using method |
| CN106668977A (en) * | 2016-12-28 | 2017-05-17 | 天津哈娜好医材有限公司 | Check valve used for infusion apparatus and use method of check valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103656781B (en) | 2016-03-16 |
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