CN103785083A - Automatic stopping device for disposable intravenous infusion set - Google Patents

Abstract

The invention provides an automatic stopping device for a disposable intravenous infusion set. The device is mounted in an infusion set dripping bucket, gravity and buoyancy principles are used, a seal unit floats upwards along with the rising of the liquid medicine level in the dripping bucket during infusion, and an infusion tube port is opened, so that the infusion is smooth. When the infusion is completed or the liquid medicine is added and changed midway, the liquid medicine level in the dripping bucket of the infusion set is reduced, the seal unit descends along with the liquid level, and a seal bulge membrane plugs an infusion pipe timely, so that the liquid medicine level is prevented from descending, and regurgitation blood return is prevented. The device is simple in structure, good in seal stopping effect, capable of being popularized and applied widely, reducing the medical personnel labor intensity effectively and improving the service quality and provided with enormous economic benefits and social benefits.

Description

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

Technical field

The invention provides a kind of disposable intravenous infusion set automatic cut-off device, particularly one and utilize gravity and law of buoyancy, in the time that infusion unit titrimeter inner liquid medicine is soon 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 using at present venous transfusion nursing, does not possess automatic cut-off function, in venous transfusion process, careless slightlyly will cause anti-generation of flowing back to blood phenomenon, brings unnecessary trouble to transfusion; Therefore many improvement projects and design invention have been there is in this field, in order to solve the existing anti-blood problem that flows back in venous transfusion; The method adopting at present mainly contains two large classes; One is gravity cut-off method, mainly adopts and in infusion unit titrimeter, installs ball float, float needle, conical plug, diaphragm, flap valve etc. additional; These class methods have utilized the reasons such as the gravity principle in venous transfusion is realized cut-off, and cut-off effect is not good enough but exist in popularization, and technology is not mature enough, and manufacturability is poor do not popularized widely and apply; It is another kind of is to utilize external force to assist to realize the automatic cut-off of transfusion, main employing has detection of electrons method, gravimetric method, magnetic method, volumetric method etc., although this class methods technology is comparatively advanced, cut-off effect comparatively accurately and reliably, in cut-off, also realize cut-off alarm function; But be not up to the present still 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, prevent the anti-new type auto stopper that blood phenomenon occurs that flows back to, and are very necessary.

Summary of the invention

The invention provides a kind of disposable intravenous infusion set automatic cut-off device, particularly one and utilize gravity and law of buoyancy, in the time that infusion unit titrimeter inner liquid medicine is soon 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, technical scheme of the present invention 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 is stretched in dropping funnel, and slip cap 1-2 is sleeved on the outer ring surface that mozzle 1-1 stretches into one section of pipe in dropping funnel 2, is slidably matched with its formation; Float cap 1-3 is assemblied in the assembling cover petal harmomegathus mouth 1-2-7 of slip cap 1-2 one 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, is connected with inlet 3-1 or other device of lower tube for transfusion 3.

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 2-1 is assembled into one with dropping funnel mouth; Mozzle 1-1 stretches into the one end in dropping funnel 2, is inwardly 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 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 the spacing hole 1-2-1 that slides, 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, 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 is directly 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 petal-shaped float cap assembling cover internal diameter of 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 harmomegathus mouth protrudes spacing edge 1-2-8 and is stuck on float cap limiting stand 1-3-3, is clamped 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, in assembly, cover 1-2-6 respectively with the assembling of petal-shaped float cap, harmomegathus mouth protrudes spacing edge 1-2-7 and matches; Mounting pipe mouth of pipe 1-3-4 is sealed by float cap sealing tympanum 1-3-5, 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 in the time of 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 in the time of full state, and the inlet 1-1-1 plane of mozzle 1-1 and float cap seal tympanum 1-3-5 planes overlapping;

Figure of description

Fig. 1 disposable intravenous infusion set automatic cut-off device assembling transfusion state figure

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

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

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

Fig. 5 disposable intravenous infusion set automatic cut-off device cut-off state profile

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, 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

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

Beneficial effect

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

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 in possessing pressure, will produce buoyancy to medicinal liquid face floating lower than the material of medicinal liquid density in medicinal liquid, simultaneously also can be along with medicinal liquid face declines and declines; If floating agents design is become to specific shape, can seal identical with dropping funnel liquid outlet, in the time that medicinal liquid face declines, will seal infusion unit titrimeter liquid outlet, stop medicinal liquid face to continue to decline, realize cutoff function, make the positive/negative pressure that in the tube for transfusion below stop surface, maintenance varies in size from top to bottom, thereby avoid anti-generation of flowing back to blood phenomenon.

Be arranged in the present invention the disposable intravenous infusion set of dropping funnel 2 from stopper 1, its mozzle 1-1 is fixedly mounted in dropping funnel liquid outlet 2-1, becomes one structure with dropping funnel 2; 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, connects with the connector of lower tube for transfusion 3; 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 of the slip cap 1-2 of stopper 1 and float cap 1-3 composition, 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, in the time that 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, depart from inlet 1-1-1, now the inlet 1-1-1 of mozzle 1-1 opens, and medicinal liquid flows unimpeded; In the time that transfusion finishes or when medicinal liquid changed by continuous bottle, medicinal liquid face in dropping funnel 2 declines, assembly parts also decline thereupon, sealing tympanum 1-3-5 declines and seals inlet 1-1-1, blocking agent liquid stream moves and medicinal liquid face declines, 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 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, makes it in the time that medicinal liquid face declines, and sealing tympanum 1-3-5 airtight inlet 1-1-1 accurately, realizes cutoff function; In this case, the design of the atmospheric pressure sealed of float cap 1-3, makes to seal tympanum 1-3-5 and has good sealing modulability, even if sealing surface angle exists a small amount of error, also can adjust 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 overall appearance effect; Sealing tympanum 1-3-5 adopts soft latex material, guarantees sealing effectiveness;

Automatic cut-off device volume provided by the present invention is little, and good sealing effect is stable and reliable for performance; Liquid outlet one end that it is arranged on dropping funnel inside, does not affect formation and the observing effect of drop in dropping funnel, does not increase the volume of dropping funnel, affects its appearance, similar or close to the traditional style of disposable general infusion set dropping funnel; 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 invention, 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 feature such as manufacturability is strong; In clinical practice, can effectively reduce medical personnel's labor intensity, save a large amount of human resources who takies for observing transfusion progress, make more standard of infusion management, nurse more intimate.

Claims (4)

1. 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 is stretched in dropping funnel, and slip cap (1-2) is sleeved on the outer ring surface that mozzle (1-1) stretches into one section of pipe in dropping funnel, is slidably matched with its formation; Float cap (1-3) is assemblied in one 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 the inlet (3-1) of lower tube for transfusion (3), and (or other device) is communicated with and connects.

2. disposable intravenous infusion set automatic cut-off device according to claim 1 (1), it is characterized in that 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 mozzle pipeline (1-1-11) form; The dropping funnel of mozzle (1-1) is installed stationary pipes (1-1-7), penetrates in dropping funnel liquid outlet (2-1), spacing by dropping funnel mounting limit platform (1-1-6), is assembled into one with dropping funnel mouth (2); Mozzle (1-1) stretches into the guide pipe (1-1-5) in dropping funnel, guide and limit platform (1-1-4), and guide and limit dish (1-1-3), feed liquor tube head (1-1-2), is slidably matched by inlet (1-1-1) and the corresponding site of slip cap (1-2); Guide pipe (1-1-5) external diameter is equal, and outer ring surface meets fineness requirement; Guide and limit platform (1-1-4) limits the sliding stroke of slip cap (1-2); Guide and limit dish (1-1-3) limits 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. 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), the fairlead assembling excessive face of cover (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), 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 is directly 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 petal-shaped float cap assembling cover internal diameter of (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 be assembled wherein; Float cap mounting limit platform (1-2-5) is spacing to float cap (1-3), and harmomegathus mouth protrudes spacing edge (1-2-8) and is stuck on float cap limiting stand (1-3-3), is clamped 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. disposable intravenous infusion set automatic cut-off device according to claim 1 (1), it is characterized in that 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), the 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, float cap mounting pipe (1-3-2) is provided with float cap limiting stand (1-3-3) with the excessive face of hemispherical head shell (1-3-1), in assembly, cover (1-2-6) respectively with the assembling of petal-shaped float cap, harmomegathus mouth protrudes spacing edge (1-2-7) and matches; The 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 inlet (1-1-1) plane of mozzle (1-1); Float cap (1-3) is with slip cap (1-2) one assembly parts in the time of float state, and the inlet of mozzle (1-1) and float cap sealing tympanum (1-3-5) are preserved certain distance; Float cap (1-3) is with slip cap (1-2) one assembly parts in the time of full state, and inlet (1-1-1) plane of mozzle (1-1) and float cap seal tympanum (1-3-5) planes overlapping. ?

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