CN207856030U - One kind can facilitate the whether normal transfusion system of infusion pressure during monitoring transfusion - Google Patents

Abstract

The utility model belongs to infusion techn field, and the whether normal transfusion system of infusion pressure during monitoring transfusion can be facilitated by being related to one kind.The transfusion system includes the medical liquid container and woven hose for containing liquid being connected to each other, the woven hose other end connects the vein blood vessel of patient, and wherein transfusion system further includes the infusion pressure change indicator and pressure operable valve set gradually on woven hose along liquid medicine flow direction；Pressure operable valve is connected after woven hose inner liquid medicine pressure reaches unlatching value, and the area that cross section is connected increases with the increase of woven hose inner liquid medicine pressure, but the area of maximum conducting cross section is less than the 1/3 of woven hose cross-sectional area., can be in non-gravity infusion using the transfusion system of the utility model, especially in field rescue, emergency aid and treatment or microgravity infusion, conveniently whether infusion pressure is normal during monitoring transfusion.

Description

One kind can facilitate the whether normal transfusion system of infusion pressure during monitoring transfusion

Technical field

The utility model belongs to infusion techn field, is related to whether one kind can facilitate during monitoring transfusion infusion pressure Normal transfusion system.

Background technology

Infusion is a kind of therapeutic modality that drug or blood are input to blood circulation of human body system.With section The development of technology, traditional infusion model have obtained very big improvement, and infusion pump has also gradually come into hospital, allow people to infusion Control it is more accurate, medication is safer, while it is laborsaving also to allow nurse more to save worry in infusion process.But either The infusion model of Conventional gravity infusion model or infusion pump is carried out to infusion flow by the drop pot in gravity transfusion system Estimation is monitored survey to infusion safety, so that the length that infusion apparatus makes is longer, the medical waste of generation compared with It is more, and since the presence of infusion drop pot makes entire transfusion system occupied space is larger to be also inconvenient to move.Pursuing environmental protection Property, convenience and entire transfusion system it is safe and reliable in the case of, two kinds of infusion models cannot all be met the requirements.

Fig. 1 is traditional, and is still the group of the transfusion system used in most hospitals or clinic by gravity now At schematic diagram.The transfusion system include it is internal contain liquid medical liquid container 1 (can be polybag or vial, if it is Vial needs increase air inlet port on bottle stopper), bottle plug puncture unit 2, drop pot 3, infusion tube 4, flow regulator 5, silica gel Pipe 6 and venipuncture tool 7.The bottle stopper of medical liquid container 1 is pierced through by bottle plug puncture unit 2 so that the liquid in medical liquid container 1 can To flow into the infusion tube 4 of 2 lower end of bottle plug puncture unit connection by gravity.It is provided on infusion tube 4 for observing liquid stream The drop pot 3 (liquid for instilling drop pot 3 often drip for roughly the same volume) of amount, for the flow regulator 5 of regulating liquid medicine flow (can be micro-transfusion system with a scale, actual internal area when being flowed through herein by controlling infusion tube 4, to control medicine Liquid volume flow).The other end of infusion tube 4 connects silicone tube 6, the other end connection venipuncture tool 7 of silicone tube 6.It is quiet Arteries and veins Centesis instrument 7 is used to puncture the vein blood vessel of patient, and liquid is enable to flow into the vein of patient.

Above-mentioned the shortcomings that there are problems that by the transfusion system of gravity with include：1) medical liquid container must be put into eminence, Pressure difference is generated by liquid gravity, liquid is made to flow out；2) nurse needs vertically to place drop pot, then number medicine number of drops is estimated Medicinal liquid flow is calculated, it is time-consuming, take a lot of trouble；3) due to needing medical liquid container being suspended to eminence, so woven hose would generally be very long, material Using more.

On the basis of Fig. 1 traditional transfusion systems by gravity, the improved transfusion system by infusion pump will be defeated Liquid pump is applied on medical liquid container 1, infusion tube 4 or silicone tube 6, and then instead of the effect of flow regulator 5, defeated to liquid Noting speed can be with more precise control.But due to infusion pump machine itself it is possible that failure, causes transfusion speed to lose Control causes malpractice (typical common fault condition is exactly that infusion pump infusion caused by losing pump pressure is out of control), is The generation for avoiding such case, is still equipped with drop pot 3 in transfusion system, and using when drop pot 3 necessarily be in vertical direction. In use, under the effect of gravity, according to correlation properties such as liquid drop tension itself and density, liquid is with every roughly the same body of drop Product falls into drop pot 3.When infusion pump sets parameter, when being worked, the drop number detected is converted to flow by program, with Set flow is compared, and judges whether infusion pump work is normal, or the feelings of drips are observed by artificial mode Whether condition pump work of judging to be infused is normal, ensures that the safety of infusion process and accurate.

Above-mentioned the shortcomings that there are problems that by the transfusion system of infusion pump with include：1) pot will be dripped by still needing rises vertically Come, infusion flow or artificial observation detected come the safety of monitoring transfusion process by liquid stalagmometer number, thus mobile or Person's field rescue etc. in emergency circumstances can be very inconvenient；2) still medical liquid container is hung up, so woven hose still can be very Long, materials'use is more.

Utility model content

Whether the purpose of this utility model is to provide infusion pressure during one kind can facilitate monitoring transfusion normal defeated Liquid system, with can non-gravity infusion in, especially field rescue, emergency aid and treatment or microgravity infusion in, it is convenient and efficient Monitoring transfusion during infusion pressure it is whether normal, i.e., whether stall.

In order to achieve this, in the embodiment on basis, the utility model, which provides one kind, can facilitate monitoring transfusion mistake The whether normal transfusion system of infusion pressure in journey, the transfusion system include the medical liquid container for containing liquid being connected to each other With woven hose, the woven hose other end connects the vein blood vessel of patient, so that the liquid can flow into the quiet of patient Arteries and veins,

Wherein：

The transfusion system further includes the infusion pressure set gradually on the woven hose along liquid medicine flow direction Power change indicator and pressure operable valve；

The pressure operable valve is connected that (its Opening pressure is big after the woven hose inner liquid medicine pressure reaches unlatching value In the pressure that conventional gravity infusion is provided, generally between 150KPa -500KPa), and the area of cross section is connected with defeated The increase of liquid pipe inner liquid medicine pressure and increase, but the area of maximum conducting cross section is less than the woven hose cross-sectional area 1/3。

In a preferred embodiment, the utility model, which provides one kind, can facilitate pressure of being infused during monitoring transfusion The whether normal transfusion system of power, wherein the transfusion system further includes bottle plug puncture unit, the medical liquid container passes through institute The woven hose described in bottle plug puncture unit connection stated.

In a preferred embodiment, the utility model, which provides one kind, can facilitate pressure of being infused during monitoring transfusion The whether normal transfusion system of power, wherein the transfusion system further includes venipuncture tool, the woven hose passes through institute The vein blood vessel of the venipuncture tool connection patient stated.

In a preferred embodiment, the utility model, which provides one kind, can facilitate pressure of being infused during monitoring transfusion The whether normal transfusion system of power, wherein the infusion pressure change indicator is flexible cavity, the flexible cavity Inner cavity communicated with the liquid, and some or all of described flexible cavity outer wall is made of elastic material.

In a kind of more preferred embodiment, the utility model provide one kind can facilitate it is defeated during monitoring transfusion The whether normal transfusion system of hydraulic coupling, wherein the elastic material is silica gel or thermoelastic material.

In a preferred embodiment, the utility model, which provides one kind, can facilitate pressure of being infused during monitoring transfusion The whether normal transfusion system of power, wherein the infusion pressure change indicator include shell and along liquid inside the shell Liquid entrance, spool, the elastomeric element that flow direction is set gradually.

In a preferred embodiment, the utility model, which provides one kind, can facilitate pressure of being infused during monitoring transfusion The whether normal transfusion system of power, wherein the infusion pressure change indicator includes threeway, pressure membrane and touch sensing Device is popped one's head in,

Two interfaces of the threeway are separately connected the woven hose,

The touch force sensor that the third interface connection of the threeway is described is popped one's head in, and the pressure membrane is tightly disposed in The outside of the touch force sensor probe and the third interface connection.

In a preferred embodiment, the utility model, which provides one kind, can facilitate pressure of being infused during monitoring transfusion The whether normal transfusion system of power, wherein the transfusion system further includes the liquid connection dress being arranged on the woven hose It sets, the infusion pressure change indicator is set on the liquid communication apparatus, and the liquid communication apparatus is along medicine The cross-sectional area of liquid flow direction is more than cross-sectional area of the woven hose along liquid medicine flow direction.

In a preferred embodiment, the utility model, which provides one kind, can facilitate pressure of being infused during monitoring transfusion The whether normal transfusion system of power acts on medical liquid container or woven hose wherein the transfusion system further includes infusion pump Upper offer infusion pressure, so that liquid not may also flow into patient vessel by gravity.

In a preferred embodiment, the utility model, which provides one kind, can facilitate pressure of being infused during monitoring transfusion The whether normal transfusion system of power, wherein the transfusion system further includes pressure applying means, for holding to the liquid Liquid in device applies constant pressure, so that liquid not may also flow into patient vessel by gravity.

The beneficial effects of the utility model are, can facilitate pressure of being infused during monitoring transfusion using the utility model The whether normal transfusion system of power, can be in non-gravity infusion, especially field rescue, emergency aid and treatment or microgravity infusion In, conveniently whether infusion pressure normal during monitoring transfusion, i.e., whether stall.

The term " infusion pump " used in the utility model is typically control device mechanically or electrically, it is by acting on Woven hose or medical liquid container achieve the purpose that control transfusion speed.Particularly with the infusion of some specific drugs and some spies Different patient, such as heart disease patients, the infusion of old young patient, due to must be strictly controlled transfusion drip speed, the phase therefore infusion pump seems To important.There are many type of infusion pump, including fast formula infusion pump of capacity formula infusion pump, drop etc..

Description of the drawings

Fig. 1 is the traditional of the prior art, and is still that most hospitals or clinic are used by the defeated of gravity now The composition schematic diagram of liquid system.

Fig. 2 is can facilitate the whether normal transfusion system of infusion pressure during monitoring transfusion one of the utility model The illustrative composition schematic diagram of kind.

Fig. 3, which is the utility model, can facilitate the another of the whether normal transfusion system of infusion pressure during monitoring transfusion A kind of illustrative composition schematic diagram.

Fig. 4 is that infusion pressure change indicator is flexible cavity (the first of infusion pressure change indicator in Fig. 2 Illustrative embodiment) when flexible cavity and its neighbouring component partial enlarged view.

The schematic diagram whether Fig. 5 changes for infusion pressure during flexible cavity monitoring transfusion.

Fig. 6 is the schematic diagram that liquid flows through flexible cavity.

Fig. 7 is the composite structural diagram of second of illustrative embodiment of infusion pressure change indicator in Fig. 2.

Fig. 8 is the composite structural diagram of the third illustrative embodiment of infusion pressure change indicator in Fig. 2.

Fig. 9 is the operation principle schematic diagram of the third illustrative embodiment of infusion pressure change indicator.

Specific implementation mode

Specific embodiment of the present utility model is further illustrated below in conjunction with attached drawing.

A kind of reality that the whether normal transfusion system of infusion pressure during monitoring transfusion can be facilitated of the utility model The composition of mode is applied as shown in Fig. 2, including medical liquid container 1 (for polybag or vial), bottle plug puncture unit, upper conduit 2, infusion Pressure change instruction device 3, pressure operable valve 4, downcomer 5, venipuncture tool 6.

Medical liquid container 1 is connected with woven hose by bottle plug puncture unit for containing liquid.The other end of woven hose is logical The vein blood vessel that venipuncture tool 6 connects patient is crossed, so that liquid can flow into the vein of patient.

Infusion pressure change indicator 3 and pressure operable valve 4 are set gradually on woven hose along liquid medicine flow direction. Woven hose is divided into the downcomer 5 of the upper conduit 2 and its rear end of its front end by pressure operable valve 4 along liquid medicine flow direction.Infusion pressure Power change indicator 3 is used for the variation of the variation instruction infusion process Chinese medicine flow quantity by its herb liquid pressure.Pressure is opened It opens valve 4 and is connected that (its Opening pressure is more than what conventional gravity infusion was provided after 2 inner liquid medicine pressure of upper conduit reaches unlatching value Pressure, generally between 150Kpa -500Kpa), and be connected cross section area with the increase of 2 inner liquid medicine pressure of upper conduit and Increase, but the area of maximum conducting cross section is less than the 1/3 of 2 cross-sectional area of upper conduit.Infusion pump can act on liquid appearance On device 1 or woven hose, so that liquid not may also flow into patient vessel by gravity.

The another kind that the whether normal transfusion system of infusion pressure during monitoring transfusion can be facilitated of the utility model The composition of embodiment such as Fig. 3 is shown.Unlike the embodiment formed shown in Fig. 2, the composition of such embodiment Middle transfusion system further includes the liquid communication apparatus 7 being arranged on upper conduit 2, and infusion pressure, which is arranged, on liquid communication apparatus 7 becomes Change instruction device 3.Cross-sectional area of the liquid communication apparatus 7 along liquid medicine flow direction is more than upper conduit 2 and downcomer 5 along liquid stream The cross-sectional area (upper cross-sectional area of the conduit 2 with downcomer 5 along liquid medicine flow direction is identical) in dynamic direction.Liquid communication apparatus 7 Sectional area can be connected locally increasing liquid so that liquid pressure increases in liquid communication apparatus 7, to make flexible cavity 3 Swelling volume is more obvious.

The first illustrative embodiment of infusion pressure change indicator 3 is as shown in figure 4, it is elasticity in Fig. 2 Cavity 3, the inner cavity of flexible cavity 3 are communicated with the liquid in upper conduit 2.Some or all of flexible cavity 3 outer wall is by elastic material Material (such as silica gel or thermoelastic material) is made.

As seen in figs. 5-6, after liquid enters upper conduit 2 by medical liquid container 1, pressure starts to increase in upper conduit 2.This When, since internal pressure increase generates expansion, volume increases the flexible cavity 3 being arranged on upper conduit 2.It is pressed when in upper conduit 2 After power reaches the unlatching value of pressure operable valve 4, pressure operable valve 4 is gradually opened, and liquid flows into downcomer by pressure operable valve 4 5, and patient's body is entered by venipuncture tool 6.

Since the conducting sectional area of pressure operable valve 4 is much smaller than cross-sectional area of the upper conduit 2 along liquid medicine flow direction, when defeated When liquid system worked well, 4 Chinese medicine flow velocity of pressure operable valve is more than 2 inner liquid medicine flow velocity of upper conduit, and 2 inner liquid medicine pressure of upper conduit Power is more than 4 Chinese medicine hydraulic coupling of pressure operable valve, so flexible cavity 3 is still within swelling state.It is worked normally in transfusion system In the process, the infusion flow rate of setting is certain value, so the volume size that flexible cavity 3 expands also will be a definite value.And work as After transfusion system breaks down, actual infusion flow deviates from the infusion flow of setting, and the swelling volume of flexible cavity 3 also will Change, thus can by observe flexible cavity 3 volume, judge transfusion system whether stall, ensure that infusion Safety.

Second of infusion pressure change indicator 3 illustrative embodiment is as shown in Figure 7 in Fig. 2.In such reality It applies in mode, infusion pressure change indicator 3 includes shell 11 and set gradually along flow direction of the liquid in shell 11 Liquid entrance 8, spool 9, elastomeric element 10.When transfusion system works, pressure increases in upper conduit 2, and liquid pushes spool 9 Movement, 9 elasticity of compression component 10 of spool, the liquid thrust and the elastic force of elastomeric element 10 that spool 9 is subject at a certain position reach Make 9 stop motion of spool to balance.When transfusion system flow deviates setting flow, or failure is no longer infused, spool 9 Position can deviate original position.In this way can be by intuitively observing the variation of spool position, monitoring transfusion flow in process is It is no to change, and which is equally applicable in non-gravity.

The third illustrative embodiment of infusion pressure change indicator 3 is as shown in Figure 8 in Fig. 2.In such reality It applies in mode, infusion pressure change indicator 3 includes threeway 12, pressure membrane 13 and touch force sensor probe 14, threeway 12 Two interfaces are separately connected conduit 2.The third interface connection touch force sensor probe 14 of threeway 12, pressure membrane 13 is closely set It sets in the outside of touch force sensor probe 14 and third interface connection.As shown in figure 9, when transfusion system works normally, Pressure in threeway 12 increases to a certain steady state value, and pressure membrane 13 is heaved, to make touch force sensor probe 14 generate corresponding positions It moves.Infusion pump converts displacement signal to electric signal by pressure sensor 13, is then scaled a pressure value and is recorded. When transfusion system transfusion speed is not normal, state, touch force sensor are heaved when pressure membrane 13 works normally before cannot maintaining The position of probe 14 also will produce respective change, cause the pressure value finally conversed can and the pressure value that records before generate compared with Large deviation.When this deviation is more than tolerance band, that is, showing that transfusion system works stall, such transfusion system can alarm, Nurse just can take corresponding measure after hearing alarm.Which perceives transfusion speed not against gravity, so non-heavy It can also be used in force environment.

Obviously, those skilled in the art can carry out the utility model various modification and variations without departing from this practicality Novel spirit and scope.If in this way, belonging to the utility model claims to these modifications and variations of the present invention And its within the scope of equivalent technology, then the utility model is also intended to include these modifications and variations.Above-described embodiment or Embodiment is to the utility model for example, the utility model can also be with other ad hoc fashions or other spies Setting formula is implemented, without departing from the main idea or substantive characteristics of the utility model.Therefore, the embodiment of description is come in terms of any See be regarded as it is illustrative and non-limiting.The scope of the utility model should illustrate by appended claims, any with power The variation that the intention and range of profit requirement are equivalent should also be included in the scope of the utility model.

Claims (10)

1. one kind can facilitate the whether normal transfusion system of infusion pressure during monitoring transfusion comprising the dress being connected to each other The medical liquid container and woven hose of liquid are contained, the woven hose other end connects the vein blood vessel of patient, so that the liquid The vein of patient can be flowed into,

It is characterized in that：

The transfusion system further includes becoming along the infusion pressure that liquid medicine flow direction is set gradually on the woven hose Change instruction device and pressure operable valve；

The pressure operable valve is connected after the woven hose inner liquid medicine pressure reaches unlatching value, and the face of cross section is connected Product increases with the increase of woven hose inner liquid medicine pressure, but the area of maximum conducting cross section is less than the woven hose cross section The 1/3 of area.

2. transfusion system according to claim 1, it is characterised in that：The transfusion system further includes bottle plug puncture unit, The medical liquid container passes through the bottle plug puncture unit connection woven hose.

3. transfusion system according to claim 1, it is characterised in that：The transfusion system further includes venipuncture work Tool, the woven hose connect the vein blood vessel of patient by the venipuncture tool.

4. transfusion system according to claim 1, it is characterised in that：The infusion pressure change indicator is elasticity Cavity, the inner cavity of the flexible cavity are communicated with the liquid, and some or all of described flexible cavity outer wall by Elastic material is made.

5. transfusion system according to claim 4, it is characterised in that：The elastic material is silica gel or thermoelasticity material Material.

6. transfusion system according to claim 1, it is characterised in that：The infusion pressure change indicator includes outer Shell and liquid entrance, spool, the elastomeric element set gradually along the flow direction of liquid inside the shell.

7. transfusion system according to claim 1, it is characterised in that：The infusion pressure change indicator includes three Logical, pressure membrane and touch force sensor probe,

Two interfaces of the threeway are separately connected the woven hose,

The touch force sensor that the third interface connection of the threeway is described is popped one's head in, and the pressure membrane is tightly disposed in described Touch force sensor probe and the third interface connection outside.

8. according to any transfusion systems of claim 1-7, it is characterised in that：The transfusion system further includes that setting exists The infusion pressure variation instruction dress is arranged on the liquid communication apparatus for liquid communication apparatus on the woven hose It sets, cross-sectional area of the liquid communication apparatus along liquid medicine flow direction is more than the woven hose along liquid medicine flow direction Cross-sectional area.

9. according to any transfusion systems of claim 1-7, it is characterised in that：The transfusion system further includes infusion Pump, acts on medical liquid container or woven hose and provides infusion pressure, so that liquid not may also flow into patient vessel by gravity.

10. according to any transfusion systems of claim 1-7, it is characterised in that：The transfusion system further includes pressure Bringing device applies constant pressure for the liquid into the medical liquid container, so that liquid can also not flowed by gravity Enter patient vessel.