CN203370163U - Automatic cut-off device of disposable intravenous infusion apparatus - Google Patents

Abstract

The utility model provides an automatic cut-off device of a disposable intravenous infusion apparatus. The automatic cut-off device is installed in a drip chamber of an infusion apparatus. With utilization of gravity and buoyancy principles, a sealing device floats upwards along with ascent of liquid medicine in the drip chamber during infusion, an infusion pipeline opening opens, and the infusion is smooth; and when the infusion is completed or a liquid medicine bottle is replaced for medicine change, and the level of the liquid medicine in the drip chamber of the infusion apparatus drops, the sealing device also drops, a sealing drum film timely blocks an infusion flowing pipeline so as to stop the level of the liquid medicine from dropping and thus to prevent regurgitation and blood return phenomena from occurring. The automatic cut-off device provided by the utility model is simple in structure, excellent in sealing and cut-off effect and suitable for wide popularization and application, can help to effectively reduce working intensity of medical workers and raise service quality, and has huge economic and social benefits.

Description

A kind of disposable intravenous infusion set automatic cut-off device

Technical field

This utility model provides a kind of disposable intravenous infusion set automatic cut-off device, and particularly a kind of gravity and law of buoyancy utilized, when the infusion unit titrimeter inner liquid medicine soon is totally lost, prevent medicinal liquid face excessive descent and the anti-automatic cut-off device that flows back to the generation of blood phenomenon.

Background technology

The disposable intravenous infusion set generally used at present venous transfusion nursing, do not possess the automatic cut-off function, in the venous transfusion process, careless slightlyly will cause anti-generation of flowing back to the blood phenomenon, to transfusion, brings unnecessary trouble; Therefore many improvement projects and design invention have appearred in this field, in order to solve the existing anti-blood problem that flows back in venous transfusion; The method adopted at present mainly contains two large classes; One is the gravity cut-off method, mainly adopts and install ball float, float needle, conical plug, diaphragm, flap valve etc. additional in infusion unit titrimeter; The reasons such as these class methods have utilized the gravity principle in the venous transfusion to realize cut-off, but exist the cut-off effect not good enough in popularization, and technology is not mature enough, and manufacturability is poor are not popularized widely and are applied; It is another kind of is to utilize external force to assist to realize the automatic cut-off of transfusion, the main employing has detection of electrons method, gravimetric method, magnetic method, volumetric method etc., although this class methods technology is comparatively advanced, the cut-off effect comparatively accurately and reliably, in cut-off, also realized the cut-off alarm function; But up to the present still be not widely used and apply, tracing it to its cause, this class methods operation is easy not, and it is not too convenient to use; Utilize external force to assist and deal with problems, both do not met Trend of Energy Saving, also increased the technical problem that external force is utilized simultaneously.Therefore design and develop new, utilize the transfusion principle of transfusion device self, both energy-conserving and environment-protective, can realize again the automatic cut-off of venous transfusion, prevents the anti-new type auto stopper that the blood phenomenon occurs that flows back to, and is very necessary.

The utility model content

This utility model provides a kind of disposable intravenous infusion set automatic cut-off device, and particularly a kind of gravity and law of buoyancy utilized, when the infusion unit titrimeter inner liquid medicine soon is totally lost, prevent medicinal liquid face excessive descent and the anti-automatic cut-off device that flows back to the generation of blood phenomenon; In order to achieve the above object, the technical solution of the utility model is achieved in that described intravenous transfusion device automatic cut-off device 1, and it is assemblied in disposable intravenous infusion set dropping funnel 2, by mozzle 1-1, and slip cap 1-2, float cap 1-3 is assembled; Mozzle 1-1 is fixedly mounted in the liquid outlet 2-1 of dropping funnel 2, and its inlet one end stretches in dropping funnel, and slip cap 1-2 is sleeved on the outer ring surface that mozzle 1-1 stretches into one section pipe in dropping funnel 2, with its formation, is slidably matched; Float cap 1-3 is assemblied in the assembling cover petal harmomegathus mouth 1-2-7 of slip cap 1-2 mono-end, is integrally formed assembly parts; Liquid outlet one end of mozzle 1-1 extends to outside the liquid outlet 2-1 of dropping funnel 2, with inlet 3-1(or other device of lower tube for transfusion 3) be connected.

Described disposable intravenous infusion set automatic cut-off device 1, its mozzle 1-1, by inlet 1-1-1, feed liquor tube head 1-1-2, guide and limit dish 1-1-3, guide and limit platform 1-1-4, guide pipe 1-1-5, dropping funnel mounting limit platform 1-1-6, dropping funnel is installed stationary pipes 1-1-7, lower tube for transfusion mounting limit platform 1-1-8, lower tube for transfusion connects tube head 1-1-9, and liquid outlet 1-1-10 and its mozzle pipeline 1-1-11 form; The dropping funnel of mozzle 1-1 is installed stationary pipes 1-1-7, penetrates in the liquid outlet 2-1 of dropping funnel 2, and by dropping funnel mounting limit platform, 1-1-6 is spacing, and with the dropping funnel mouth, 2-1 is assembled into one; Mozzle 1-1 stretches into the end in dropping funnel 2, inwardly is designed to respectively guide pipe 1-1-5 from dropping funnel liquid outlet 2-1, guide and limit platform 1-1-4, guide and limit dish 1-1-3, feed liquor tube head 1-1-2, inlet 1-1-1; The corresponding site of the assembling integral piece of its each position and float cap 1-3, the two formation of slip cap 1-2 is slidably matched; Guide pipe 1-1-5 equal diameters, outer ring surface has the fineness requirement; Guide and limit platform 1-1-4 sets the sliding stroke of slip cap 1-2; Guide and limit dish 1-1-3 coordinates guide pipe 1-1-5 to limit the glide direction of slip cap 1-2; Mozzle pipeline 1-1-11 is communicated with dropping funnel 2 and lower tube for transfusion 3;

Described disposable intravenous infusion set automatic cut-off device 1, its slip cap 1-2 is by slip spacing hole 1-2-1, slip limiting stand 1-2-2, petal-shaped slip water conservancy diversion fairlead 1-2-3, the excessive face 1-2-4 of fairlead assembling cover, float cap mounting limit platform 1-2-5, petal-shaped float cap assembling cover 1-2-6, assembling cover petal harmomegathus mouth 1-2-7, the harmomegathus mouth protrudes spacing edge 1-2-8 and forms; The diameter of slip spacing hole 1-2-1 is less than the internal diameter of petal-shaped slip water conservancy diversion fairlead 1-2-3; The internal diameter of petal-shaped slip water conservancy diversion fairlead 1-2-3 is less than the internal diameter of petal-shaped float cap assembling cover 1-2-6; The internal diameter of petal-shaped float cap assembling cover 1-2-6 is greater than the mouth warp of assembling cover petal harmomegathus mouth 1-2-7; Slip spacing hole 1-2-1 is sleeved on the outer ring surface of guide pipe 1-1-5, and it directly is more than or equal to the straight warp of guide pipe 1-1-5, and formation is slidably matched; Petal-shaped slip water conservancy diversion fairlead 1-2-3 is sleeved on the outside of guide and limit dish 1-1-3, and its internal diameter is more than or equal to the straight warp of guide and limit dish 1-1-3, and formation is slidably matched; The equal diameters of the internal diameter of petal-shaped float cap assembling cover 1-2-6 and the float cap mounting pipe 1-3-2 of float cap 1-3, when assembling cover petal harmomegathus mouth 1-2-7 opens, the mounting pipe 1-3-2 of float cap 1-3 can assemble wherein; 1-2-5 is spacing to float cap 1-3 for float cap mounting limit platform, and the harmomegathus mouth protrudes spacing edge 1-2-8 and is stuck on float cap limiting stand 1-3-3, and its chucking is fixing; Not at grade, float cap sealing tympanum 1-3-5 assembles excessive face 1-2-4 with fairlead and keeps certain distance in assembly for the fairlead assembling excessive face 1-2-4 of cover and float cap mounting limit platform 1-2-5.

Described disposable intravenous infusion set automatic cut-off device 1, its float cap 1-3 is by hemispherical head shell 1-3-1, float cap mounting pipe 1-3-2, float cap limiting stand 1-3-3, mounting pipe mouth of pipe 1-3-4, float cap sealing tympanum 1-3-4 forms; Float cap 1-3 is hollow shelly body, hemispherical head shell 1-3-1 is excessively equal diameter float cap mounting pipe 1-3-2 from centre of sphere cross section, the excessive face of float cap mounting pipe 1-3-2 and hemispherical head shell 1-3-1 is provided with float cap limiting stand 1-3-3, cover 1-2-6 with the assembling of petal-shaped float cap respectively in assembly, the harmomegathus mouth protrudes spacing edge 1-2-7 and matches; Mounting pipe mouth of pipe 1-3-4, by float cap sealing tympanum 1-3-5 sealing, forms airtight hollow float cap 1-3; In assembly, float cap 1-3 is assemblied in petal-shaped float cap assembling cover 1-2-6, spacing up and down by float cap mounting limit platform 1-2-5 and float cap limiting stand 1-3-3, float cap sealing tympanum 1-3-5 plane is corresponding with the inlet 1-1-1 plane of mozzle 1-1; Float cap 1-3 and slip cap 1-2 one assembly parts are when float state, and the inlet of mozzle 1-1 and float cap sealing tympanum 1-3-5 preserve certain distance; Float cap 1-3 and slip cap 1-2 one assembly parts are when full state, and the inlet 1-1-1 plane of mozzle 1-1 and float cap seal tympanum 1-3-5 planes overlapping.

Beneficial effect

This utility model provides a kind of disposable intravenous infusion set automatic cut-off device, and it utilizes gravity and law of buoyancy, when the infusion unit titrimeter inner liquid medicine soon is totally lost, can prevent medicinal liquid face excessive descent and the anti-generation of flowing back to the blood phenomenon that causes; Compared to other stopper, have simple in structure, good sealing effect, the characteristics such as manufacturability is strong; Can effectively reduce medical personnel's labor intensity in clinical practice, save a large amount of human resources who takies for observing the transfusion progress, make more standard of infusion management, nurse more intimate.

The accompanying drawing explanation

The state diagram of Fig. 1 disposable intravenous infusion set automatic cut-off device normal infusion

Fig. 2 disposable intravenous infusion set automatic cut-off device transfusion cut-off state figure

Fig. 3 disposable intravenous infusion set automatic cut-off device transfusion cut-off state figure profile

Fig. 4 disposable intravenous infusion set automatic cut-off device assembling cut-off state figure

Fig. 5 disposable intravenous infusion set automatic cut-off device assembling transfusion state figure

Fig. 6 disposable intravenous infusion set automatic cut-off device mozzle structure chart

Fig. 7 disposable intravenous infusion set automatic cut-off device slip cap structure chart

Fig. 8 disposable intravenous infusion set automatic cut-off device float cap figure

1, disposable intravenous infusion set automatic cut-off device

1-1, mozzle

1-1-1, inlet

1-1-2, feed liquor tube head

1-1-3, guide and limit dish

1-1-4, guide and limit platform

1-1-5, guide pipe

1-1-6, dropping funnel mounting limit platform

1-1-7, dropping funnel is installed stationary pipes

1-1-8, lower tube for transfusion mounting limit platform

1-1-9, lower tube for transfusion connect tube head

The 1-1-10 liquid outlet

1-1-11 mozzle pipeline

1-2, slip cap

1-2-1, slip spacing hole

1-2-2, slip limiting stand

1-2-3, petal-shaped slip water conservancy diversion fairlead

1-2-4, the excessive face of fairlead assembling cover

1-2-5, float cap mounting limit platform

1-2-6, petal-shaped float cap assembling cover

1-2-7, assembling cover petal harmomegathus mouth

1-2-8, harmomegathus mouth protrude spacing edge

1-3, float cap

1-3-1, hemispherical head shell

1-3-2, float cap mounting pipe

1-3-3, float cap limiting stand

1-3-4, the mounting pipe mouth of pipe

1-3-5, float cap sealing tympanum

2, dropping funnel

2-1, dropping funnel liquid outlet

3, lower tube for transfusion

Tube for transfusion connector under 3-1

The specific embodiment

In venous transfusion, the tube for transfusion inner liquid medicine flow of disposable intravenous infusion set, because being subject to the Flow-rate adjustment restriction of tiny piercing needle and flow control valve, can not flow by the maximum stream flow of design, making has pressure to exist in the inherent whole infusion process of tube for transfusion; Liquid soup in infusion unit titrimeter also has buoyancy when possessing pressure, lower than the material of medicinal liquid density, will produce buoyancy to medicinal liquid face floating in medicinal liquid, simultaneously also can be along with the medicinal liquid face descends and descend; If floating agents design is become to specific shape, with the dropping funnel liquid outlet, can seal identical, when the medicinal liquid face descends, will seal the infusion unit titrimeter liquid outlet, stop the medicinal liquid face to continue to descend, realize cutoff function, make in the following tube for transfusion of stop surface to keep the positive/negative pressure varied in size from top to bottom, thereby avoid anti-generation of flowing back to the blood phenomenon.

Be arranged in the disposable intravenous infusion set of dropping funnel 2 from stopper 1 in this utility model, its mozzle 1-1 is fixedly mounted in dropping funnel liquid outlet 2-1, with dropping funnel 2, becomes one structure; Inlet one end of mozzle 1-1 stretches to dropping funnel 2 inner chambers, and mozzle pipeline 1-1-11 is communicated with dropping funnel; The other end extends to outside the liquid outlet 2-1 of dropping funnel 2, with the connector of lower tube for transfusion 3, connects; The extended end of mozzle 1-1 in dropping funnel 2, its termination is mozzle inlet 1-1-1, is designed with respectively guide and limit dish 1-1-3 downwards, guide and limit platform 1-1-4, guide pipe 1-1-5; The one assembly parts that the slip cap 1-2 of stopper 1 and float cap 1-3 form, be sleeved on the extended end of mozzle 1-1 in dropping funnel, sealing tympanum 1-3-5 on assembly parts, petal-shaped slip water conservancy diversion fairlead 1-2-3, slip limiting stand 1-2-2, slip spacing hole 1-2-1 coincide with it respectively and is slidably matched; In infusion process, when medicinal liquid inflow dropping funnel 2 is interior, the one assembly parts of float cap 1-3 and slip cap 1-2 are along with the up-slip floating of medicinal liquid face, sealing tympanum 1-3-5 on assembly parts, break away from inlet 1-1-1, now the inlet 1-1-1 of mozzle 1-1 opens, and medicinal liquid flows unimpeded; When transfusion finishes or continuous bottle while changing medicinal liquid, medicinal liquid face in dropping funnel 2 descends, assembly parts also descend thereupon, sealing tympanum 1-3-5 descends and seals inlet 1-1-1, the moving medicinal liquid face that reaches of blocking agent liquid stream descends, now the medicinal liquid in tube for transfusion still keeps certain positive/negative pressure, plays the effect of the generation of avoiding the anti-stream of medicinal liquid and blood back phenomenon.

In the structural design of this stopper, float cap 1-3 adopts the sealed hollow structural design, has increased buoyancy, and the assembly structural member that original density is larger can be floated in medicinal liquid; Mozzle 1-1 and slip cap 1-2, the design that is slidably matched of float cap 1-3, make it when the medicinal liquid face descends, and sealing tympanum 1-3-5 is airtight inlet 1-1-1 accurately, realizes cutoff function; In this case, the design of the atmospheric pressure sealed of float cap 1-3, make to seal tympanum 1-3-5 and have good sealing modulability, even there is a small amount of error in the sealing surface angle, also can adjusts voluntarily and realize sealing, reaches required sealing effectiveness.

In process of production, the structural member in this case adopts conventional production technology to produce, and manufacturability is strong, and production cost is low; Adopt the manufacture of multimode injection moulding, production efficiency; Float cap 1-3 and slip cap 1-2 can adopt the material that density is less to make, to increase buoyancy; Reduce the volume of float cap 1-3, increase the overall appearance effect; Sealing tympanum 1-3-5 adopts soft latex material, guarantees sealing effectiveness;

This utility model provides the automatic cut-off device volume little, and good sealing effect is stable and reliable for performance; Liquid outlet one end that it is arranged on dropping funnel inside, do not affect formation and the observing effect of drop in dropping funnel, do not increase the volume of dropping funnel, affects its appearance effect, similar or close to the traditional style of disposable general infusion set dropping funnel; The dropping funnel liquid outlet can directly connect with lower tube for transfusion, does not affect the flow effect of medicinal liquid, and its amount of flow is more than or equal to defined flow standard in GB.

Be equipped with disposable intravenous infusion set of the present utility model, do not change medical personnel's work habit, its operation sequence is identical with disposable intravenous infusion set, is easy to learn and use; Compared to other stopper, have simple in structure, good sealing effect, the characteristics such as manufacturability is strong; Can effectively reduce medical personnel's labor intensity in clinical practice, save a large amount of human resources who takies for observing the transfusion progress, make more standard of infusion management, nurse more intimate.

Claims (4)

1. a disposable intravenous infusion set automatic cut-off device (1), it is assemblied in disposable intravenous infusion set dropping funnel (2), by mozzle (1-1), slip cap (1-2), float cap (1-3) is assembled; Mozzle (1-1) is fixedly mounted in dropping funnel liquid outlet (2-1), and its inlet one end stretches in dropping funnel, and slip cap (1-2) is sleeved on the outer ring surface that mozzle (1-1) stretches into one section pipe in dropping funnel, with its formation, is slidably matched; Float cap (1-3) is assemblied in an end of slip cap, forms buoyancy aid body assembly parts; Liquid outlet (1-1-10) end of mozzle (1-1) extends to the outside of dropping funnel liquid outlet (2-1), and with the inlet (3-1) of lower tube for transfusion (3), or other device is communicated with connection.

2. a kind of disposable intravenous infusion set automatic cut-off device according to claim 1 (1), it is characterized in that its mozzle (1-1), by inlet (1-1-1), feed liquor tube head (1-1-2), guide and limit dish (1-1-3), guide and limit platform (1-1-4), guide pipe (1-1-5), dropping funnel mounting limit platform (1-1-6), dropping funnel is installed stationary pipes (1-1-7), lower tube for transfusion mounting limit platform (1-1-8), lower tube for transfusion connects tube head (1-1-9), and liquid outlet (1-1-10) and its mozzle pipeline (1-1-11) form; The dropping funnel of mozzle (1-1) is installed stationary pipes (1-1-7), penetrates in the liquid outlet (2-1) of dropping funnel (2), spacing by dropping funnel mounting limit platform (1-1-6), with dropping funnel mouth (2-1), is assembled into one; Mozzle (1-1) stretches into the end in dropping funnel (2), inwardly is designed to respectively guide pipe (1-1-5) from dropping funnel liquid outlet (2-1), guide and limit platform (1-1-4), guide and limit dish (1-1-3), feed liquor tube head (1-1-2), inlet (1-1-1); The corresponding site of the assembling integral piece of its each position and float cap (1-3), the two formation of slip cap (1-2) is slidably matched; Guide pipe (1-1-5) equal diameters, outer ring surface has the fineness requirement; Guide and limit platform (1-1-4) is set the sliding stroke of slip cap (1-2); Guide and limit dish (1-1-3) coordinates guide pipe (1-1-5) to limit the glide direction of slip cap (1-2); Mozzle pipeline (1-1-11) is communicated with dropping funnel (2) and lower tube for transfusion (3).

3. a kind of disposable intravenous infusion set automatic cut-off device according to claim 1 (1), it is characterized in that its slip cap (1-2) is by slip spacing hole (1-2-1), slip limiting stand (1-2-2), petal-shaped slip water conservancy diversion fairlead (1-2-3), fairlead assembling cover excessive face (1-2-4), float cap mounting limit platform (1-2-5), petal-shaped float cap assembling cover (1-2-6), assembling cover petal harmomegathus mouth (1-2-7), the harmomegathus mouth protrudes spacing edge (1-2-8) and forms; The diameter of slip spacing hole (1-2-1) is less than the internal diameter of petal-shaped slip water conservancy diversion fairlead (1-2-3); The internal diameter of petal-shaped slip water conservancy diversion fairlead (1-2-3) is less than the internal diameter of petal-shaped float cap assembling cover (1-2-6); The internal diameter of petal-shaped float cap assembling cover (1-2-6) is greater than the mouth warp of assembling cover petal harmomegathus mouth (1-2-7); Slip spacing hole (1-2-1) is sleeved on the outer ring surface of guide pipe (1-1-5), and it directly is more than or equal to the straight warp of guide pipe (1-1-5), and formation is slidably matched; Petal-shaped slip water conservancy diversion fairlead (1-2-3) is sleeved on the outside of guide and limit dish (1-1-3), and its internal diameter is more than or equal to the straight warp of guide and limit dish (1-1-3), and formation is slidably matched; The equal diameters of the internal diameter of petal-shaped float cap assembling cover (1-2-6) and the float cap mounting pipe (1-3-2) of float cap (1-3), assembling cover petal harmomegathus mouth (1-2-7) is while opening, and the mounting pipe (1-3-2) of float cap (1-3) can be assembled wherein; Float cap mounting limit platform (1-2-5) is spacing to float cap (1-3), and the harmomegathus mouth protrudes spacing edge (1-2-8) and is stuck on float cap limiting stand (1-3-3), and its chucking is fixing; Not at grade, float cap sealing tympanum (1-3-5) assembles excessive face (1-2-4) with fairlead and keeps certain distance in assembly for the fairlead assembling excessive face of cover (1-2-4) and float cap mounting limit platform (1-2-5).

4. a kind of disposable intravenous infusion set automatic cut-off device according to claim 1 (1), it is characterized in that its slip cap (1-2) is by slip spacing hole (1-2-1), slip limiting stand (1-2-2), petal-shaped slip water conservancy diversion fairlead (1-2-3), fairlead assembling cover excessive face (1-2-4), float cap mounting limit platform (1-2-5), petal-shaped float cap assembling cover (1-2-6), assembling cover petal harmomegathus mouth (1-2-7), the harmomegathus mouth protrudes spacing edge (1-2-8) and forms; The diameter of slip spacing hole (1-2-1) is less than the internal diameter of petal-shaped slip water conservancy diversion fairlead (1-2-3); The internal diameter of petal-shaped slip water conservancy diversion fairlead (1-2-3) is less than the internal diameter of petal-shaped float cap assembling cover (1-2-6); The internal diameter of petal-shaped float cap assembling cover (1-2-6) is greater than the mouth warp of assembling cover petal harmomegathus mouth (1-2-7); Slip spacing hole (1-2-1) is sleeved on the outer ring surface of guide pipe (1-1-5), and it directly is more than or equal to the straight warp of guide pipe (1-1-5), and formation is slidably matched; Petal-shaped slip water conservancy diversion fairlead (1-2-3) is sleeved on the outside of guide and limit dish (1-1-3), and its internal diameter is more than or equal to the straight warp of guide and limit dish (1-1-3), and formation is slidably matched; Internal diameter and the float cap 1-3 of petal-shaped float cap assembling cover (1-2-6)) the equal diameters of float cap mounting pipe (1-3-2), assembling is covered petal harmomegathus mouth (1-2-7) while opening, the mounting pipe (1-3-2) of float cap (1-3) can be assembled wherein; Float cap mounting limit platform (1-2-5) is spacing to float cap (1-3), and the harmomegathus mouth protrudes spacing edge (1-2-8) and is stuck on float cap limiting stand (1-3-3), and its chucking is fixing; Not at grade, float cap sealing tympanum (1-3-5) assembles excessive face (1-2-4) with fairlead and keeps certain distance in assembly for the fairlead assembling excessive face of cover (1-2-4) and float cap mounting limit platform (1-2-5).

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