CN202761808U - Single-way stop-flowing device for venous transfusion - Google Patents

Abstract

The utility model relates to a single-way stop-flowing device for a disposable venous infusion apparatus. Due to the fact that the single-way stop-flowing device is arranged at the connection end between a capillary soft tube and an infusion tube of the disposable venous infusion apparatus and integrated with the capillary soft tube, the phenomena of liquid medicine back streaming and blood returning can not happen after transfusion or during the transfusion, or when patients sit up, stand and even walk. The single-way stop-flowing device for venous transfusion has the advantages that structure of the disposable infusion apparatus is little modified, the structure is simple, cost is low, industrial production is convenient to achieve, and working habits of medical workers can not be changed. The single-way stop-flowing device for venous transfusion is convenient to popularize and use, working efficiency is improved, puncture needles are saved, and pains of the patients are reduced.

Description

The unidirectional fluid stopping device of a kind of venous transfusion

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 the prevention in whole infusion process instead flowed, the unidirectional fluid stopping device of anti-return blood.

Background technology

The present disposable intravenous infusion set that uses of venous transfusion field does not possess in infusion process and during infusion-completed, prevents the anti-blood function that flows back to; Often there is the blood back phenomenon to occur in the transfusion, brings unexpected trouble for patient and medical worker; For this reason, many searchers and antecessor have appearred in this field, 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, with the cost of labor (reducing the transfusion entourage) that reduces 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 the blood phenomenon of transfusion has: the one, in Murphy's dropper, increase plugging device, such as ball float, floating plug, flap valve etc., in order to when the infusion-completed, ball floats etc. descend with the medicinal liquid face in the Murphy's dropper, the shutoff lower liquid outlet, make not enough decline of medicinal liquid in the tube for transfusion, the holding tube internal pressure prevents the anti-blood that flows back to; This method is utilized gravity principle, can realize easily cut-off, effectively be applicable to be seated or the patient of recumbency transfusion, but in the patient posture change, as stand, walk about, perhaps sit up from the state of couching, all can cause the anti-blood that flows back to.The 2nd, at Murphy's dropper tube for transfusion once one-way non-return valve is installed, stop the anti-return blood of anti-stream in infusion process and during infusion-completed; Method generally adopts rubber finger sleeve, spring plug, elastic force door etc. in this, and the shortcoming of these class methods is that flowing of medicinal liquid had certain resistance, affects the flowability 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 the tube for transfusion, and real-time detection transfusion situation is in time found infusion-completed, start the stuck tube for transfusion of electrical installation, realize that cut-off prevents the anti-blood that flows back to; These class methods want omnidistance power consumption to survey, and do not meet the environmental protection and energy saving principle, and cost are higher; The 4th, directly adopt the 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 that certain technical ability is arranged, the more important thing is that this method is non-gravity infusion, the namely science of nature, lost the science that naturally also just lost; Lose gravity, also just lost safety.

Therefore Design and manufacture can be avoided defects in venous transfusion, 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 consists of; Its unidirectional fluid stopping device 1 is installed in the capillary vessel 1-5 of connecting puncture needle and the connection end of tube for transfusion; Its overall appearance is that the 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 is made 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; Fluid stopping latex diaphragm 1-3 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 in blower inlet casing 1-1-2.

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, inwardly is 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 is complementary; Feed tube 1-1-1 external diameter equates, by inclined-plane excessive section 1-1-1-4, excessively is blower inlet casing 1-1-2; Blower inlet casing 1-1-2 external diameter is thicker, is respectively diversion cavity 1-1-2-1 in its shell, 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, 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 is communicated with formation by center equal diameter pipeline 1-1-1-3 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, the inclined-plane is section 1-2-10 excessively, drain pipe 1-2-11, fluid pipeline 1-2-12, liquid outlet 1-2-13 consists of; Fluid stopping latex diaphragm limited post 1-2-1, penetrate during installation in the center spacing hole 1-3-1 of fluid stopping latex diaphragm 1-3, its termination embeds in the 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 the position limiting pile carrier side 1-2-4, and it is structure as a whole; On 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, consist of end socket diversion cavity 1-2-7, and the medicinal liquid in the end socket diversion cavity 1-2-7 flows to fluid pipeline 1-2-12, flows out from liquid outlet 1-2-13; 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 consists of; In assembly, the dress spacing hole 1-3-1 that wherein feels at ease is sleeved on the 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, the side of the unilateral 1-3-2 of latex film fits on the nick arc sealing surface 1-1-2-4, the 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 makes low cost of manufacture; Latex good springiness sealing fluid stopping is effective; The soft resistance of quality is little, and the medicinal liquid circulation is smooth and easy; Avoided transfusion blood back phenomenon, made transfusion safer; Reduce medical personnel's fruitless labour, improved nursing service quality; Reduce the misery that again punctures and bring to patient because of the blood back blood coagulation, saved transfusion puncture needle head.

Description of drawings: figure one wants accompanying drawing for unidirectional fluid stopping device front view also can be used as to select.

Figure two unidirectional fluid stopping device cutaway views.

Figure three is the mozzle structure chart.

Figure four latex diaphragm figure.

Figure five is water conservancy diversion end socket front view.

Figure six water conservancy diversion end socket side views.

1 unidirectional fluid stopping device

The 1-1 mozzle

The 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

The 1-1-2 blower inlet casing

The 1-1-2-1 diversion cavity

The 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

The 1-2-8 end socket is installed outer ring surface

1-2-9 mounting limit platform

Excessive section of 1-2-10 inclined-plane

The 1-2-11 drain pipe

1-2-12 fluid pipeline

The 1-2-13 liquid outlet

1-3 fluid stopping latex diaphragm

1-3-1 center spacing hole

The 1-3-2 latex film is unilateral

1-3-3 latex diaphragm outer ring surface

The 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 consisting of, 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 installed in 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 installed in the Murphy's dropper of disposable transfusion device and other any position of the tube for transfusion between the piercing needle; The mozzle 1-1 of unidirectional fluid stopping device 1 is made 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; Inwardly be respectively equal diameter pipeline 1-1-1-3, pod apertures 1-1-2-1 from input duct 1-1-1-2; Equal diameter pipeline 1-1-1-3 is communicated with a plurality of pod apertures 1-1-2-1, consists of diversion cavity 1-1-2-2; Water conservancy diversion aperture 1-1-2-3 is diversion cavity 1-1-2-2 liquid outlet, also is the fluid stopping seal; A plurality of fluid stopping seal 1-1-2-3 are distributed on the 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, and latex fluid stopping diaphragm 1-3 interval is arranged between the 1-1-2-6 of diversion chamber and the 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 is communicated with a plurality of end socket pod apertures 1-2-6 by the end socket flow-guiding mouth 1-2-5 on the diaphragm position limiting pile carrier side 1-2-4; A plurality of end socket pod apertures 1-2-6 are communicated with fluid pipeline 1-2-12, consist of 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 the infusion process, medicinal liquid flows in the 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; Pass through end socket flow-guiding mouth 1-2-5 from the 1-1-2-6 of diversion chamber again, flow in the end socket diversion cavity 1-2-7; Flow out from the fluid pipeline 1-2-12 that is communicated with it 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 forward bending of unidirectional fluid stopping latex diaphragm 1-3, leave nick arc sealing surface 1-1-2-4, open flow channel, medicinal liquid is flowed unblocked; When medicinal liquid stops to flow, the unidirectional fluid stopping diaphragm of latex under the effect of self elastic force, reinstatement, the fluid stopping seal 1-1-2-3 on the airtight nick arc sealing surface 1-1-2-4; When medicinal liquid is anti-when 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 the blood phenomenon.

The present invention operates and uses simply, and because of its union joint Integral design with the 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 be used in conjunction with the capillary soft tube piercing needle of 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 production, one-shot forming; Its injection mold is simple, can adopt and split even notes of multimode, and supply is satisfied in batch production; Can also use automated assembly line production, reduce production costs, improve output, save labour force etc.

Claims (4)

1. the unidirectional fluid stopping device of described venous transfusion (1) is characterized in that: it is by mozzle (1-1), water conservancy diversion end socket (1-2), and unidirectional fluid stopping diaphragm (1-3) consists of; Unidirectional fluid stopping device (1) is installed in the capillary vessel (1-5) of connecting puncture needle and the connection end of tube for transfusion; Its overall appearance is that the 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) is made of feed liquor connection tube (1-1-1) and blower inlet casing (1-1-2); Water conservancy diversion end socket (1-2) 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) is assemblied between the fluid stopping 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) in water conservancy diversion shell (1-1-2).

2. the mozzle (1-1) of the unidirectional fluid stopping device of venous transfusion according to 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, inwardly is 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 is complementary; Feed tube (1-1-1) external diameter equates, by the excessive section in inclined-plane (1-1-1-4), excessively is blower inlet casing (1-1-2); Blower inlet casing (1-1-2) external diameter is thicker, be respectively diversion cavity (1-1-2-1) in its shell, 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) is communicated with formation by center equal diameter pipeline (1-1-1-3) 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 seals (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 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. the water conservancy diversion end socket (1-2) of the unidirectional fluid stopping device of venous transfusion according to 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), the inclined-plane is section (1-2-10) excessively, drain pipe (1-2-11), fluid pipeline (1-2-12), liquid outlet (1-2-13) consists of; Fluid stopping latex diaphragm limited post (1-2-1), penetrate during installation in the center spacing hole (1-3-1) of fluid stopping latex diaphragm (1-3), its termination embeds in the 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 the position limiting pile carrier side (1-2-4), and it is structure as a whole; On 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, consist of end socket diversion cavity (1-2-7), medicinal liquid in the end socket diversion cavity (1-2-7) flows to fluid pipeline (1-2-12), flows out from liquid outlet (1-2-13); The installation outer ring surface (1-2-8) of water conservancy diversion end socket (1-2), embed in the water conservancy diversion end socket installing port (1-1-2-8) of blower inlet casing (1-1-2) when assembling, 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. the unidirectional fluid stopping latex diaphragm (1-3) of intravenous infusion device according to claim 1 (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) consists of; In assembly, the dress spacing hole of wherein feeling at ease, (1-3-1) be sleeved on fluid stopping latex diaphragm limited post, (1-2-1), mounting limit hole, center, (1-3-1) the periphery pressing diaphragm is at fluid stopping latex diaphragm limiting stand, (1-2-2), latex film is unilateral, a side (1-3-2) fits in the nick arc sealing surface, (1-1-2-4), the another side is positioned at diversion chamber, (1-1-2-6), latex diaphragm outer ring surface, diameter (1-3-3) and diversion chamber's anchor ring, internal diameter (1-1-2-7) equates, formation is sealed and matched

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