CN105477750B - Disposable automatic liquid-stopping transfusion apparatus - Google Patents

Disposable automatic liquid-stopping transfusion apparatus Download PDF

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Publication number
CN105477750B
CN105477750B CN201610019305.6A CN201610019305A CN105477750B CN 105477750 B CN105477750 B CN 105477750B CN 201610019305 A CN201610019305 A CN 201610019305A CN 105477750 B CN105477750 B CN 105477750B
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liquid
dropping funnel
pairing
buoyancy
sealing
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CN105477750A (en
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莫海罡
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HUNAN LUZHOU HUIKANG DEVELOPMENT Co Ltd
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HUNAN LUZHOU HUIKANG DEVELOPMENT Co Ltd
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/36—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests with means for eliminating or preventing injection or infusion of air into body
    • A61M5/40—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests with means for eliminating or preventing injection or infusion of air into body using low-level float-valve to cut off media flow from reservoir
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor

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  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Emergency Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

The present invention relates to a kind of automatic liquid-stopping transfusion apparatus, its release mechanism includes that the buoyancy inside dropping funnel body stops liquid device, buoyancy stops liquid device and is made of floating body, the folded convex sealing liquid component of pairing and connecting component, connecting component and pairing fold convex sealing liquid component and agree with the silicagel pad material for sealing diaphragm and using adsorptivity that installation pairing folds convex sealing liquid component, with excellent sealing function, stop liquid effect for supplementing；Pairing folds only fluid column core diameter and the big small-bore adaptable cooperation of liquid outlet nozzle of convex sealing liquid component, for blocking liquid outlet, achievees the effect that dual only liquid with sealing membrane combination.When institute's transfusion fluid is complete fastly, as liquid level reduces in infusion apparatus, buoyancy stops liquid device and sinks to blocking closed infusion set liquid outlet, to achieve the effect that only liquid.The invention design principle is reasonable, structure is simple, processing is simple, can widely be fitted on existing infusion apparatus, increase a safety protection function to infusion apparatus, play the role of safe infusion.

Description

Disposable automatic liquid-stopping transfusion apparatus
Technical field:
The present invention relates to a kind of disposable medical apparatus, specifically a kind of disposable automatic liquid-stopping infusion Device.
Background technique:
It is well known that China promotes the use of common disposable infusion set since the 1980s, so far Existing more than 30 years history, to preventing cross-infection from playing positive effect in clinical transfusion；But it is common disposable There is also certain shortcomings for infusion apparatus: when infusion is completed or infusion group replaces, air is easily accessible in infusion tube, such as Fruit is handled not in time, and air input human body will have an impact the health of patient；Also aggravate medical worker's simultaneously Nursery work intensity is easy to cause doctor-patient dispute；Therefore it is intended that there is a safer more effectively good product, make numerous doctors The trusting of business personnel and patient, safety；In order to solve the above technical problems, the prior art such as proposes some technologies Scheme is such as:
China Patent No. is that " CN200810048699 " discloses a kind of safe transfusion system, which is used for health care Venous transfusion in field；The infusion apparatus is made of perfusion tube, funnel and syringe needle, and perfusion tube is connected with funnel and syringe needle respectively, Wherein release mechanism includes the plastic foam floating ball in funnel, and when the liquid flow in funnel is complete, floating ball will be by lower portion Liquid outlet block, achieve the purpose that safe handling.
China Patent No. " 200320129365.1 " discloses a kind of disposable pressure-keeping infusion device, which is used for Venous transfusion in medicine and hygiene fields；The infusion apparatus is by needle for inserting bottle, hose, flow regulator, liquid medicine filter, venous transfusion Needle, dropping funnel and release mechanism composition, wherein release mechanism includes that wine bucket lower curtate has a raised medical fluid access road, dropping funnel There is a locating part in middle and lower part, there is a floating body therebetween, and floating body is embedded with diaphragm made of a latex and other soft materials.
China Patent No. is that " CN201120280062 " discloses a kind of safe transfusion system, which is used for health care Venous transfusion in field；The infusion apparatus is made of the inlet tube, Murphy's burette and outlet tube being linked in sequence, wherein safe machine Structure includes that lower end is coniform Murphy's burette, is equipped with float corresponding with its lower end shape, float in Murphy's burette The diameter of maximum cross section is greater than the internal diameter of outlet tube, and the density of float is less than medical fluid density.When having medical fluid in Murphy's burette, Float is suspended in liquid level, and with liquid level decline float decline, when medical fluid drips sky, float is placed exactly in Murphy's burette lower end, cuts The access of disconnected Murphy's burette and outlet tube, effectively prevent air to enter in patient body.Therefore, infusion apparatus of the invention can be by Floating body self-closed infusion pipeline in release mechanism, prevents air bubble from entering patient's vein.
Above-mentioned patent generally existing following some deficiencies in practical applications: first is that the medicine liquid outlet of floating body and dropping funnel bottom Or the sealing between the medicine liquid outlet of housing bottom is all to carry out contact in plane by sealing diaphragm to be sealed, and seals diaphragm With floating body inside there are when certain space, bubble is easy to produce when being infused alternately；Second is that being floated when stopping liquid to fill in stifled formula method Required precision at the medicine liquid outlet cooperation sealing of body and dropping funnel bottom is high, what existing production technology was extremely difficult to be fully sealed It is required that causing sealing reliability not high, safety is low；Third is that when stopping liquid in the sealed method of film, since sealing diaphragm is to realize to have Effect environmental sealing outlet portion is so must be designed relatively thin, so that the easy puncture of the jag in practice because of the outlet portion of medical fluid is thin Diaphragm causes to seal.
Summary of the invention:
The purpose of the invention is to can control liquid or air not when liquid in infusion bottle is finished to can enter human body simultaneously Blood backflow can be prevented, realizes the purpose of safe infusion, a kind of disposable automatic liquid-stopping transfusion apparatus is provided.
The present invention, which adopts the following technical scheme that, realizes its goal of the invention: a kind of disposable automatic liquid-stopping infusion Device, it is by bottle plug puncture unit 1, dropper 2, dropping funnel 3, hose 4, flow regulator 5, liquid medicine filter 6, connector 7, venous transfusion Needle 8 forms, and wherein dropping funnel 3 stops liquid device 3-4, locating part 3- by dropping funnel upper cover 3-1, dropping funnel body 3-2, dropping funnel subiculum 3-3, buoyancy 5 compositions；Bottle plug puncture unit 1 is defeated by dropper 2, dropping funnel 3, hose 4, flow regulator 5, liquid medicine filter, connector 7 and vein Liquid needle 8 connects；Dropping funnel upper cover 3-1 is equipped with inlet tube 3-1-1, medicine feeding hole 3-1-2, and liquid outlet is equipped on dropping funnel subiculum 3-3 3-3-1, liquid outlet 3-3-2；Dropping funnel body 3-2 interior lower end is equipped with a locating part 3-5, the lower part of locating part 3-5 and liquid outlet 3- It is equipped with buoyancy between the top of 3-2 and stops liquid device 3-4.
Pairing is folded convex sealing liquid to realize that pairing folds the installation limit function of convex sealing liquid component 3-4-2 by the present invention Component 3-4-2 is designed as crown 3-4-2-1, sealing diaphragm 3-4-2-2, only tri- parts fluid column core 3-4-2-3；It and is crown 3- 4-2-1 is in top, sealing diaphragm 3-4-2-2 at middle part, the folded convex shape knot of pairing that only fluid column core 3-4-2-3 is installed in lower part Structure.
The present invention is double in order to realize that connecting component 3-4-3 and pairing fold the function that convex sealing liquid component 3-4-2 agrees with installation Closing the crown 3-4-2-1 on folded convex sealing liquid component 3-4-2 can also set equipped with inner fovea part for being inserted in connecting component 3-4-3 There is solid protrusion, protrusion enables pairing to fold convex sealing liquid component 3-4-2 for being inserted into connecting component 3-4-3 inner hole in-core It is combined as a whole component with floating body 3-4-1, has the function that fixed floating body 3-4-1 and only liquid.
For the present invention in order to realize that pairing folds the sealing function of convex sealing liquid component 3-4-2, pairing folds convex sealing liquid component 3- The edge of the sealing diaphragm 3-4-2-2 of 4-2 is prominent and can cover liquid outlet, may be designed on the direction inlet 3-1-1 A day pot-shaped shape is translated into, can also be to translate into umbrella shape under the direction liquid outlet 3-3-2, with benefit sealing exhaust；Its material is preferably The silicagel pad material of adsorptivity manufactures, and has excellent sealing function, realizes automatic liquid-stopping, stops liquid effect for supplementing；Pairing The big small-bore adaptable cooperation of only fluid column core 3-4-2-3 diameter and liquid outlet 3-3-2 nozzle of folded convex sealing liquid component 3-4-2, For blocking liquid outlet 3-3-2, only fluid column core 3-4-2-3 and sealing diaphragm 3-4-2-2 combination realize out that fluid-tight is stifled, to reach The effect of dual only liquid.
The present invention guarantees that medical fluid normal through the function of floating body 3-4-1, was equipped with liquid bath 3- to realize in infusion process 4-1-1 and flow-passing surface 3-4-1-2；The top floating body 3-4-1 edge sets the not equal liquid bath 3-4-1-1 excessively of 2-8 item；Every is crossed liquid The lower end slot 3-4-1-1 is equipped with a flow-passing surface 3-4-1-2；When liquid by flow-passing surface to the bottom surface dropping funnel subiculum 3-3, then recoil back Promote buoyancy to stop liquid device 3-4 forming recoil strength to float, shape of being infused cannot be restored caused by tension to block when preventing from changing bottle Condition；Accelerating liquid bath 3-4-1-1 can be the different shapes such as U-shaped, I-shaped, linear, and flow-passing surface 3-4-1-2 can be circular arc, side The different shapes such as shape；Because crossing the variation of different shapes of liquid bath 3-4-1-1 and flow-passing surface 3-4-1-2, so that floating body 3-4-1 also phase There should be other different shapes.
For the present invention in order to realize the position for limiting buoyancy and stopping liquid device 3-4, the function of making it that can only float up and down is equipped with limit Position part 3-5；Locating part 3-5 is located at dropping funnel body 3-3 interior lower end；Floating body 3-4-1 is located at the lower part locating part 3-5 and liquid outlet 3-3- Between 2 top.
Due to using above technical scheme, the present invention preferably realizes its goal of the invention, this is disposable automatic Only liquid infusion apparatus takes and mutually ties in the stifled liquid of only fluid column core insertion liquid outlet nozzle with sealing diaphragm flexibility package liquid outlet nozzle The sealing of conjunction stops liquid design, to avoid simple blocking, only liquid gas leakage and film sealing stop the easily rupturable ill effect of liquid, formation pair Weight safety stops the effect of liquid.Liquid bath was devised on floating body in partial sidewall simultaneously as medicine liquid channel, every is crossed liquid bath lower end Equipped with a flow-passing surface, when replacing infusion group, dropping funnel is squeezed, liquid, to dropping funnel subiculum bottom surface, is then recoiled back by flow-passing surface Buoyancy is set to stop liquid device floating to form recoil strength；Buoyancy stops liquid device with the lifting of liquid level, under the limitation of locating part, up and down Vertical float prevents the deviation that swings, and both can effectively buffer the vibration in ambulatory infusion, and component is also avoided to collide and stir Clarify liquid level bring adverse consequences；When medicine bottle herb liquid drips off, the medical fluid liquid level in dropping funnel is down to the place face of sealing diaphragm When, liquid outlet can be blocked, reach automatic liquid-stopping purpose, improve the safety coefficient of infusion, alleviate the nursing of medical worker Working strength and the lines of strain and fear mood of patient, realization are safely and effectively infused.
Detailed description of the invention:
Attached drawing 1 is overall structure diagram of the invention.
Attached drawing 2 is the schematic diagram of the section structure of label 3 of the present invention.
Attached drawing 3 is that label 3 of the present invention splits structural schematic diagram.
Attached drawing 4 is the mounting structure diagrammatic cross-section of present invention label 3-1,3-2,3-3 and 3-5.
Attached drawing 5 is the structural schematic diagram of present invention label 3-4.
Attached drawing 6A is the schematic diagram of the section structure of present invention label 3-4.
Attached drawing 6B is that the pairing of present invention label 3-4 folds the different the schematic diagram of the section structure of convex sealing liquid component.
Attached drawing 7 is the structural schematic diagram that present invention label 3-4 buoyancy stops 3-4-1,3-4-3 in liquid device.
Attached drawing 8 is the schematic diagram of the section structure that present invention label 3-4 buoyancy stops 3-4-1,3-4-3 in liquid device.
Attached drawing 9 is the structural schematic diagram of present invention label 3-4-2.
Attached drawing 10A is the schematic diagram of the section structure of present invention label 3-4-2.
Attached drawing 10B is the different the schematic diagram of the section structure of the sealing diaphragm of present invention label 3-4-2.
Attached drawing 11 is that the present invention marks 3-5's to split structural schematic diagram.
Description of symbols is shown in specification last page table.
Specific embodiment:
Further explanation of the contents of the invention are made with reference to the accompanying drawing:
Embodiment 1:
It is known from the content of the invention, a kind of disposable automatic liquid-stopping transfusion apparatus, it is by bottle plug puncture unit 1, dropper 2, drop Bucket 3, hose 4, flow regulator 5, liquid medicine filter 6, connector 7, intravenous infusion needle 8 form, and wherein dropping funnel 3 is by dropping funnel upper cover 3-1, dropping funnel body 3-2, dropping funnel subiculum 3-3, buoyancy stop liquid device 3-4, locating part 3-5 composition；Bottle plug puncture unit 1 by dropper 2, Dropping funnel 3, hose 4, flow regulator 5, liquid medicine filter 6, connector 7 are connect with intravenous infusion needle 8；It is set on dropping funnel upper cover 3-1 There are inlet 3-1-1 and medicine feeding hole 3-1-2, liquid outlet connector 3-3-1 and liquid outlet 3-3-2 is equipped on dropping funnel subiculum 3-3；Dropping funnel Body 3-2 interior lower end is equipped with a locating part 3-5, stops between the lower part of locating part 3-5 and the top of liquid outlet 3-3-2 equipped with buoyancy Liquid device 3-4；Buoyancy stops liquid device 3-4 by connecting component 3-4-3, the folded convex sealing liquid component 3-4-2 of pairing and with liquid bath 3- excessively The floating body 3-4-1 composition of 4-1-1, flow-passing surface 3-4-1-2.
Bottle plug puncture unit 1 of the present invention, dropper 2, dropping funnel 3, hose 4, flow regulator 5, liquid medicine filter 6, even Connector 7, the conventional arrangement components that intravenous infusion needle 8 is infusion apparatus.
Dropping funnel 3 of the present invention is the security function feature of this infusion apparatus, the security function feature For be internally provided with when the liquid in infusion bottle is finished can control liquid or air not and can enter human body and can anti-Hemostatic Oral Liquid return The safe control of stream.
Dropping funnel upper cover 3-1 of the present invention refers to: the upper cover of dropping funnel 3；And on upper cover 3-1 be equipped with inlet 3-1-1, Medicine feeding hole 3-1-2；Liquid enters the injection drug of bottle body and safe ready when its effect is infusion；Its cross-section structure such as attached drawing 2 Shown, it is as shown in Fig. 3 to split structure, and design position in attached drawing 2,3,4 as marked shown in 3-1.
Inlet 3-1-1 of the present invention refers to: the inlet tube being located on dropping funnel upper cover 3-1；It is acted on be liquid into Enter the hose of dropping funnel；Its design position in attached drawing 2,3 as marked shown in 3-1-1.
Medicine feeding hole 3-1-2 of the present invention refers to: the dosing mouth being located on dropping funnel upper cover 3-1；Its effect is can to pacify Complete convenient injection drug；Its design position in attached drawing 2,3 as marked shown in 3-1-2.
Dropping funnel body 3-2 of the present invention refers to: the pipe shaft of dropping funnel 3；It is to carry liquid when being infused that it, which is acted on,；It designs position It sets as marked shown in 3-2 in attached drawing 2,3,4,11.
Dropping funnel subiculum 3-3 of the present invention refers to: the bottom of dropping funnel 3；And it is equipped with liquid outlet connector 3-3-1 on it, goes out Liquid mouth 3-3-2；It is position and the medicine liquid outlet for limiting buoyancy and stopping liquid device 3-4 that it, which is acted on,；Its cross-section structure is as shown in Fig. 2, It is as shown in Fig. 3 that it splits structure, and design position in attached drawing 2,3,4 as marked shown in 3-3.
Buoyancy of the present invention stops liquid device 3-4 and refers to: folding convex sealing liquid component 3- by connecting component 3-4-3, pairing 4-2 and with cross liquid bath 3-4-1-1, flow-passing surface 3-4-1-2 floating body 3-4-1 composition；It is to float normal infusion when being infused that it, which is acted on, Can control liquid or air when liquid is finished not can enter human body and can prevent blood backflow；Its cross-section structure such as 2 institute of attached drawing Show, it is as shown in Fig. 3 to split structure, and design position in attached drawing 2,3 as marked shown in 3-4.
Liquid outlet connector 3-3-1 of the present invention refers to: being located at the outlet tube of the bottom dropping funnel subiculum 3-3；Its effect is liquid The hose that body comes out from dropping funnel；Its design position in attached drawing 2,3 as marked shown in 3-3-1.
Liquid outlet 3-3-2 of the present invention refers to: the liquid medicine flow passages of dropping funnel subiculum 3-3 protrusion connect out liquid and connect The top head 3-3-1 goes out liquid inner tube；It is when being infused to complete, to stop liquid device 3-4 with buoyancy and be adapted cooperation, for blocking that it, which is acted on, Liquid outlet 3-3-2.
Embodiment 2:
Pairing is folded convex sealing liquid to realize that pairing folds the installation limit function of convex sealing liquid component 3-4-2 by the present invention Component 3-4-2 is designed as crown 3-4-2-1, sealing diaphragm 3-4-2-2, only tri- parts fluid column core 3-4-2-3；It and is crown 3- 4-2-1 is in top, sealing diaphragm 3-4-2-2 at middle part, the folded convex shape knot of pairing that only fluid column core 3-4-2-3 is installed in lower part Structure.
Pairing of the present invention is folded convex sealing liquid component 3-4-2 and referred to: buoyancy stops the lower part liquid device 3-4 and realizes sealing effect The device of fruit；It which is provided with crown 3-4-2-1, sealing diaphragm 3-4-2-2, only fluid column core 3-4-2-3；Its effect is to cooperate liquid out Mouth 3-3-2 forms sealing structure；Its structure is as shown in Fig. 9, and cross-section structure is as shown in attached drawing 10A, 10B；Its design position As shown in attached drawing 2,3,5,6A, 6B label 3-4-2.
Embodiment 3:
The present invention is double in order to realize that connecting component 3-4-3 and pairing fold the function that convex sealing liquid component 3-4-2 agrees with installation Closing the crown 3-4-2-1 on folded convex sealing liquid component 3-4-2 can also set equipped with inner fovea part for being inserted in connecting component 3-4-3 There is solid protrusion, protrusion enables pairing to fold convex sealing liquid component 3-4-2 for being inserted into connecting component 3-4-3 inner hole in-core It is combined as a whole component with floating body 3-4-1, has the function that fixed floating body 3-4-1 and only liquid.
Crown 3-4-2-1 of the present invention refers to: pairing folds the upper layer of convex sealing liquid component 3-4-2, and effect is set Enter or be inserted into connecting component 3-4-3, so that pairing is folded convex sealing liquid component 3-4-2 and floating body 3-4-1 and be combined as a whole component, Have the function that fixed floating body 3-4-1 and only liquid；Its design position in attached drawing 9,10A, 10B as marked shown in 3-4-2-1.
Embodiment 4:
For the present invention in order to realize that pairing folds the sealing function of convex sealing liquid component 3-4-2, pairing folds convex sealing liquid component 3- The edge of the sealing diaphragm 3-4-2-2 of 4-2 is prominent and can cover liquid outlet, may be designed on the direction inlet 3-1-1 A day pot-shaped shape is translated into, can also be to translate into umbrella shape under the direction liquid outlet 3-3-2, with benefit sealing exhaust；Its material is preferably The silicagel pad material of adsorptivity manufactures, and has excellent sealing function, realizes automatic liquid-stopping, stops liquid effect for supplementing；Pairing The big small-bore adaptable cooperation of only fluid column core 3-4-2-3 diameter and liquid outlet 3-3-2 nozzle of folded convex sealing liquid component 3-4-2, For blocking liquid outlet 3-3-2, only fluid column core 3-4-2-3 and sealing diaphragm 3-4-2-2 combination realize out that fluid-tight is stifled, to reach The effect of dual only liquid.
Sealing diaphragm 3-4-2-2 of the present invention refers to: pairing folds the film surface in the middle part of convex sealing liquid component 3-4-2, Effect is that have excellent sealing function, realizes automatic liquid-stopping, stops liquid effect for supplementing；Its design position for example attached drawing 9,10A, It is marked shown in 3-4-2-2 in 10B.
Only fluid column core 3-4-2-3 of the present invention refers to: pairing folds the lower part of convex sealing liquid component 3-4-2, effect Be with liquid outlet 3-3-2 be adapted cooperation, for blocking liquid outlet 3-3-2, only fluid column core 3-4-2-3 and sealing diaphragm 3-4-2- 2 combinations realize out that fluid-tight is stifled, achieve the effect that dual only liquid；Its design position is as marked 3-4-2-3 institute in attached drawing 10A, 10B Show.
Embodiment 5:
The present invention guarantees that medical fluid normal through the function of floating body 3-4-1, was equipped with liquid bath 3- to realize in infusion process 4-1-1 and flow-passing surface 3-4-1-2；The top floating body 3-4-1 edge sets the not equal liquid bath 3-4-1-1 excessively of 2-8 item；Every is crossed liquid The lower end slot 3-4-1-1 is equipped with a flow-passing surface 3-4-1-2；When liquid by flow-passing surface to the bottom surface dropping funnel subiculum 3-3, then recoil back Promote buoyancy to stop liquid device 3-4 forming recoil strength to float, shape of being infused cannot be restored caused by tension to block when preventing from changing bottle Condition；Accelerating liquid bath 3-4-1-1 can be the different shapes such as U-shaped, I-shaped, linear, and flow-passing surface 3-4-1-2 can be circular arc, side The different shapes such as shape；Because crossing the variation of different shapes of liquid bath 3-4-1-1 and flow-passing surface 3-4-1-2, so that floating body 3-4-1 also phase There should be other different shapes.
The liquid bath 3-4-1-1 of the present invention that crosses refers to: being located at the top floating body 3-4-1 edge；It is infusion that it, which is acted on, In the process guarantee medical fluid normal through；Its design position in attached drawing 5,6A, 6B, 7,8 as marked shown in 3-4-1-1.
Flow-passing surface 3-4-1-2 of the present invention refers to: being located at the lower end liquid bath 3-4-1-1；It is when liquid is logical that it, which is acted on, Flow-passing surface is crossed to the bottom surface dropping funnel subiculum 3-3, the formation recoil strength back that then recoils makes buoyancy stop liquid device 3-4 floating；It is designed Position in attached 5,6A, 6B, 7,8 as marked shown in 3-4-1-2.
Embodiment 6:
For the present invention in order to realize the position for limiting buoyancy and stopping liquid device 3-4, the function of making it that can only float up and down is equipped with limit Position part 3-5；Locating part 3-5 is located at dropping funnel body 3-3 interior lower end；Floating body 3-4-1 is located at the lower part locating part 3-5 and liquid outlet 3-3- Between 2 top.
Locating part 3-5 of the present invention refers to: being mounted on the position-limited rack of dropping funnel body 3-3 interior lower end；It is limit that it, which is acted on, Determine the position that buoyancy stops liquid device 3-4, to make it that can only float up and down；It splits that structure is as shown in Fig. 11, and design position is such as It is marked shown in 3-5 in attached drawing 2,3,4,11.

Claims (8)

1. a kind of disposable automatic liquid-stopping transfusion apparatus, including bottle plug puncture unit (1), dropper (2), dropping funnel (3), hose (4), Flow regulator (5), liquid medicine filter (6), connector (7), intravenous infusion needle (8), it is characterized in that dropping funnel (3) is by dropping funnel upper cover (3-1), dropping funnel body (3-2), dropping funnel subiculum (3-3), buoyancy stop liquid device (3-4), locating part (3-5) composition；The bottle stopper is worn Pierce device (1) by dropper (2), dropping funnel (3), hose (4), flow regulator (5), liquid medicine filter (6), connector (7) with it is quiet Arteries and veins transfusion needle (8) connection；The dropping funnel upper cover (3-1) is equipped with inlet (3-1-1), medicine feeding hole (3-1-2), in dropping funnel subiculum (3-3) is equipped with liquid outlet connector (3-3-1), liquid outlet (3-3-2)；The lower part of the locating part (3-5) and liquid outlet (3-3-2) Top between be equipped with buoyancy stop liquid device (3-4)；The buoyancy stops liquid device (3-4) and folds convex by floating body (3-4-1), pairing Sealing liquid component (3-4-2) and connecting component (3-4-3) composition, the floating body (3-4-1) and the pairing fold convex sealing liquid component (3-4-2) is connected by the connecting component (3-4-3)；
The buoyancy stops liquid device (3-4) and folds convex sealing liquid component (3-4-2) equipped with pairing, and pairing folds convex sealing liquid component (3- 4-2) by crown (3-4-2-1), sealing diaphragm (3-4-2-2), only fluid column core (3-4-2-3) form the folded convex shape structure of pairing；
The buoyancy stops floating body (3-4-1) in liquid device (3-4) and was equipped with liquid bath (3-4-1-1), flow-passing surface (3-4-1-2).
2. a kind of disposable automatic liquid-stopping transfusion apparatus according to claim 1, it is characterized in that the buoyancy stops liquid dress The crown (3-4-2-1) for setting (3-4) is so that pairing is folded convex sealing liquid portion for being inserted in connecting component (3-4-3) equipped with inner fovea part Part (3-4-2) can be combined as a whole component with floating body (3-4-1), have the function that fixed floating body (3-4-1) and only liquid.
3. a kind of disposable automatic liquid-stopping transfusion apparatus according to claim 1, it is characterized in that the buoyancy stops liquid dress The crown for setting (3-4) is equipped with solid protrusion, and protrusion folds pairing convex for being inserted into connecting component (3-4-3) inner hole in-core Type sealing liquid component (3-4-2) can be combined as a whole component with floating body (3-4-1), reach fixed floating body (3-4-1) and only liquid Effect.
4. a kind of disposable automatic liquid-stopping transfusion apparatus according to claim 1, it is characterized in that the buoyancy stops liquid dress The edge for setting the sealing diaphragm (3-4-2-2) of (3-4) protrudes and can cover liquid outlet.
5. a kind of disposable automatic liquid-stopping transfusion apparatus according to claim 4, it is characterized in that the buoyancy stops liquid dress The sealing diaphragm (3-4-2-2) for setting (3-4) can translate into pot-shaped on the direction inlet (3-1-1), can also be to liquid outlet (3-3- 2) umbrella shape is translated under direction.
6. a kind of disposable automatic liquid-stopping transfusion apparatus according to claim 1, it is characterized in that the buoyancy stops liquid dress Only fluid column core (3-4-2-3) for setting (3-4) is cylinder, and only fluid column core (3-4-2-3) diameter and liquid outlet (3-3-2) nozzle are big Small-bore adaptable cooperation, for blocking liquid outlet (3-3-2).
7. a kind of disposable automatic liquid-stopping transfusion apparatus according to claim 1, it is characterized in that being set on floating body (3-4-1) Cross liquid bath (3-4-1-1) and flow-passing surface (3-4-1-2)；The top edge floating body (3-4-1) sets the not equal liquid bath excessively of 2-8 item (3-4-1-1)；It crosses the liquid bath lower end (3-4-1-1) for every and is equipped with a flow-passing surface (3-4-1-2), liquid passes through flow-passing surface (3-4-1- 2) bottom surface dropping funnel subiculum (3-3) is arrived, the formation recoil strength back that then recoils makes buoyancy stop liquid device (3-4) convenient for floating.
8. a kind of disposable automatic liquid-stopping transfusion apparatus according to claim 1, it is characterized in that dropping funnel body (3-2) is internal Lower end sets a locating part (3-5)；The locating part (3-5) limits the position that buoyancy stops liquid device (3-4), make its can only on float downward It is dynamic.
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CN2039970U (en) * 1988-11-26 1989-06-28 方正国 Intravenous drip injector
CN100425297C (en) * 2005-05-31 2008-10-15 虞家珍 Automatic controlling arrangement of transfusion system
CN102139131B (en) * 2009-06-08 2012-10-03 上海金塔医用器材有限公司 Safety vein infusion control device
US8858513B2 (en) * 2011-05-16 2014-10-14 Dragon Heart Medical Devices Co., Ltd. Disposable intravenous flow control device
CN204106756U (en) * 2014-08-06 2015-01-21 安徽宏宇五洲医用器材有限公司 A kind of automatic liquid-stopping transfusion apparatus
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CN205322933U (en) * 2016-01-04 2016-06-22 湖南省绿洲惠康发展有限公司 Disposable automatic liquid -stopping transfusion apparatus

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