CN2897279Y

CN2897279Y - Infusion monitor alarming device

Info

Publication number: CN2897279Y
Application number: CN 200520105473
Authority: CN
Inventors: 邓勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-08-16
Filing date: 2005-08-16
Publication date: 2007-05-09
Anticipated expiration: 2015-08-16

Abstract

The utility model discloses a highly reliable and low-power consumption transfusion monitoring alarm suitable for all kinds of liquid medicine and liquid storage containers, which is used for monitoring the lack of liquid medicine during the process of medical transfusion. Applying an integrated structure, this utility model is clipped on the transfusion tube while working, the clipping structure located on the back surface of a housing is connected to the housing through a hinge and it's locked and fixed by clip tenon, and after being clipped tightly the transfusion tube will press a touch switch to make the circuit switch on and work; a capacitive sensor applies flat electrode chips to whose surface is applied a protection layer not to be influenced by the seeping liquid medicine; the touch switch is made of rubber material and applies a sealed structure to prevent the seeping of liquid medicine; the circuit can be extended and connected to other control and display terminals; the monitoring alarm has a self-check function; warning sound will appear when there is a lack of battery voltage; when the whole monitoring alarm is working, it will not contact the liquid medicine, with the advantages of safety and sanitation, small size and low weight, simple and reasonable structure and convenience for use, it's very suitable for putting into use and this utility model can alleviate the doctor-patient burden effectively.

Description

The monitoring infusion alarm

Technical field

This utility model relates to the automatic monitoring alarm device that a kind of supervision medicinal liquid that is used for medical transfusion lacks.

Background technology

In the process of medical transfusion, if the medicinal liquid in the tube for transfusion may cause adverse consequences even major accident when lacking to a certain degree, therefore whether need people to pay close attention to medicinal liquid and lack, this, make people's body and mind tired out and slip up easily if being a dull and very long job.Use a kind of device doctor, trouble both sides that lacking of medicinal liquid carried out automatic monitoring alarm all to look forward to.Existing monitoring infusion device mainly contains following several types, and they all have corresponding deficiency:

One, electrode is got involved detecting: electrode inserts in the medicinal liquid, and for example Chinese patent 93230196, utilizes the conductive characteristic of medicinal liquid to detect having or not of medicinal liquid.Its major defect be cause liquid medicine contamination easily, be awkward, accuracy is relatively poor.

Two, weighing measurement method: utilize spring (CN97101591.0) or lever (CN93104665.3) to weigh and detect having or not of medicinal liquid.Its major defect is low precision, the size to medicine bottle, material difference bad adaptability, and installing and using of having is loaded down with trivial details.

Three, photodetection type: be maximum technology that adopts at present, the light source of employing and the mode of detection, position have a lot.But they all have following some shortcoming: kind, color and luster adaptability to medicinal liquid are wideless; Speed to transfusion has certain requirement; To producing foamy situation maladjustment in the transfusion; Power consumption is bigger; Be subjected to the interference of surround lighting easily.

Four, electric capacity detecting: be to cause capacitance or the different principle of loss according to medium difference between the electrode of capacitance type sensor, distinguishing between electrode is medicinal liquid or air is to judge whether to lack medicinal liquid, and electrode need not contact medicinal liquid.But existing electric capacity detecting, majority all is that the electrode slice with capacitance type sensor is looped around on the transfusion bottle on (cn892170441) or the bottleneck (cn90216537.2), and pick off separates with main frame, the shortcoming of doing like this is: 1, the liquid of at every turn changing dressings all will repeat to take off electrode slice from empty bottle and refill process on the new bottle, and is loaded down with trivial details and make mistakes easily.2, bottle herb liquid residue is more during warning.3, be difficult to be applicable to special-shaped infusion bottle (bag).4, be subjected to the influence of aluminum capping easily at bottleneck.5, be easy to generate the Radio frequency interference Other Instruments, also be subjected to external interference easily.

Summary of the invention

At above-mentioned shortcoming, the purpose of this utility model provides a kind of detection more accurately and reliably, the scope of application is wider, more be difficult for being interfered, power consumption still less, and simple to operate, easy to use, safe, the small and exquisite lightweight monitoring infusion alarm of volume.

This utility model has adopted capacitance type sensor to survey the principle of medicinal liquid, and pick off does not contact with medicinal liquid.Different with existing electric capacity detecting is: this utility model is a kind of device of working on the tube for transfusion that is clipped in, and capacitance type sensor has used the flat electrode sheet, and pick off, clamping device, casing are formed integral structure.Medicinal liquid in infusion bottle is totally lost, and when the position that this monitoring infusion alarm clips is reduced in the medicinal liquid position, will be detected, and alarm sends chimes of doom immediately.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples:

Fig. 1: structural representation of the present utility model (back side).

Fig. 2: this utility model is clipped in the sketch map (back side) when working on the tube for transfusion.

Fig. 3: trip part sectioned view of the present utility model.

Fig. 4: touch-switch of the present utility model (two kinds of embodiment) generalized section.

Fig. 5: capacitance type sensor flat electrode sheet of the present utility model (two kinds of embodiment) is clamped in the cross-sectional view on the tube for transfusion.

Fig. 6: this utility model is clipped in the sketch map (front) when working on the tube for transfusion.

Fig. 7: the circuit block diagram of first embodiment.

Fig. 8: the circuit block diagram of second embodiment.

The numbering of each parts of this utility model and title are as follows in the accompanying drawing: 1, protecgulum, 2, casing, 3, slot electrode, 4, electrode slice, 5, trip, 6, button, 7, the clamping releasing piece, 8, slot electrode, 9, electrode slice, 10, clamping device, 11, hinge, 12, trip, 14, thin-walled, 15, conductive rubber contact, 16, interdigital electrode, 17, circuit board, 18, tube for transfusion, 19, sound releasing hole, 20, display lamp.

The specific embodiment

This utility model is made up of following circuit and mechanism specifically: capacitance type sensor, oscillating circuit, the f-v translation circuit, voltage identificating circuit (or counting prewired circuit), control circuit, luminous indicating circuit, the audible alarm circuit, battery powered and mu balanced circuit, battery detection circuit, compensating circuit, on-off circuit, interface circuit.The shell that holds circuit devcie and battery is fixed on capacitance type sensor the clamping device that also can play positioning action on the tube for transfusion.

This utility model is achieved in that the clamping device (10) and the back side of casing (2) connect by hinge (11), and clamping device (10) can be around hinge (11) folding certain angle.The offside that is positioned at hinge (11) on the clamping device (10) has the trip (12) that can lock, and trip (5) effect at it and casing (2) back side can be locked mutually.Slot electrode (8) is longitudinally arranged in the clamping device (10), and the groove inner bottom part is placed a slice electrode slice (9) of capacitance level transducer.Also there is a strip electrode groove (3) position at the back side of casing (2) corresponding to clamping device (10) top electrode groove (8), place another electrode slice (4) of capacitance level transducer in the groove, also have the button (6) that stretches out the touch-switch of certain altitude in the casing (2) in the slot electrode (8).In clamping device (10) sandwiches tube for transfusion (18) in the space that slot electrode (3,8) surrounds, applying certain external force makes trip (5,12) mutually after the locking, the elastic force of tube for transfusion (18) will push button (6) and make conductive rubber contact (15) contact interdigital electrode (16), make between the adjacent electrode of interdigital electrode (16) to conduct, main circuit is started working.Trip (5,12) the other result of locking back generation mutually is: it is the fixed capacitor of structure of medium with tube for transfusion (18) that two electrode slices of capacitance type sensor (4,9) can form one, this capacitor is exactly a capacitance type sensor, and can be by the fixing whole monitoring infusion alarm of the frictional force between electrode slice (4,9) and tube for transfusion (18) tube wall on tube for transfusion (18).When needs with this monitoring infusion alarm when tube for transfusion takes off, can outwards pull clamping releasing piece (8) because the strain of thin-walled (14), trip (12) breaks away from trip (5), clamping device is opened, main circuit quits work automatically immediately.

The work process of this utility model circuit:

For first embodiment (Fig. 7): when also having medicinal liquid in the medicinal liquid bottle, just be full of medicinal liquid in the tube for transfusion, the capacitance of capacitance type sensor is bigger, the frequency of oscillation of the agitator that is attached thereto is low, this frequency is converted to a lower voltage through the f-v translation circuit, this voltage is lower than the voltage identificating circuit threshold value, and voltage identificating circuit is failure to actuate, and warning circuit is not reported to the police.When not having medicinal liquid in the medicinal liquid bottle, the tube for transfusion herb liquid is reduced to certain predetermined altitude, the capacitance of capacitance type sensor reduces, the frequency of oscillation of agitator raises, when the voltage of this frequency through the f-v conversion, reach the voltage identificating circuit threshold value after, voltage identificating circuit action, report to the police by control circuit control phonation circuit, the sound of microphone device spreads out of by sound releasing hole.Also can by mode wired, wireless, optical transmission control signal be reached other control, display terminal, control in the convenience, record, statistics by interface circuit.

Among this embodiment: compensating circuit will be to agitator, and f-v translation circuit, voltage identificating circuit compensate, so that its steady operation, conform.

For second embodiment (Fig. 8): when also having medicinal liquid in the medicinal liquid bottle, just be full of medicinal liquid in the tube for transfusion, the capacitance of capacitance level transducer is bigger, the frequency of oscillation of the agitator that is attached thereto is low, this frequency is lower than the value that the counting prewired circuit is set, the counting prewired circuit is failure to actuate, and warning circuit is not reported to the police.When not having medicinal liquid in the medicinal liquid bottle, the tube for transfusion herb liquid is reduced to certain predetermined altitude, the capacitance of capacitance level transducer reduces, the frequency of oscillation of agitator raises, reach the value of counting prewired circuit setting when this frequency after, the action of counting prewired circuit is reported to the police by control circuit control phonation circuit, and the sound of microphone device spreads out of by sound releasing hole.Also can by mode wired, wireless, optical transmission control signal be reached other control, display terminal, control in the convenience, record, statistics by interface circuit.

Among this embodiment: compensating circuit will compensate agitator, so that its steady operation, conform.

The battery powered of above-mentioned two embodiment, mu balanced circuit, battery detection circuit are identical, and mu balanced circuit provides stable voltage for interlock circuit.The battery detection circuit is in order to monitoring battery voltage, crosses when low when cell voltage, and battery detection circuit may command warning circuit produces distinguishing caution sound, so that in time change battery.LED light is glittering, shows that this monitoring infusion alarm is in duty.

Because conductive rubber touch-switch (under especially little triggering power situation) conducting resistance is bigger, it directly inserts main power circuit may influence the circuit operate as normal, mu balanced circuit of the present utility model adopts the little power consumption integrated stable voltage circuit that can be controlled break-make by level, and touch-switch is by controlling the effect of playing the control on and off switch to the level control end of integrated stable voltage circuit.

The electrode slice of capacitance type sensor of the present utility model does not adopt existing surrounding electric poles, but adopts the flat electrode sheet, and the feature of kind electrode sheet is: 1, and electrode slice cross section curvature is less than tube for transfusion cross section curvature under the naturalness, even is dull and stereotyped fully.2, two electrode slices are pressed close to ultimate range between the surface of tube for transfusion less than the diameter of tube for transfusion, after just tube for transfusion is sandwiched between the electrode slice, can be pressed into oblate or pancake.Adopt the kind electrode chip architecture can increase the electric capacity relative variation of capacitance type sensor when the liquid aneroid is arranged, thereby improve job stability and accuracy of detection, can also reduce sensitivity the tube for transfusion diameter deviation.Fig. 5 adopts the plate electrode sheet respectively (Fig. 5 a) and drawing in side sectional elevation behind two kinds of embodiment clamping tube for transfusions of certain curvature electrode slice (Fig. 5 b) arranged.Medicinal liquid slit seepage between bottle stopper and tube for transfusion plug during transfusion, the phenomenon that flows down along tube for transfusion happens occasionally, and that medicinal liquid adopts normal saline to make the situation of solvent is a lot, when therefore the medicinal liquid of seepage flow to the electrode slice of capacitance type sensor, may make short circuit between electrode slice, make the circuit cisco unity malfunction.The medicinal liquid of seepage is possibility burn into contaminated electrode sheet also, damages this device.So the electrode slice surface-coated of this utility model capacitance type sensor insulation and wear-resisting, corrosion resistant protective material, take place to avoid above-mentioned infringement.

Based on same reason, for the medicinal liquid that prevents seepage enters in the casing, touch-switch adopts rubber key, conductive rubber contact, be designed to hermetically-sealed construction, press the bowl bodies of the similar back-off of key head, be positioned on the casing by outer hoop or embedded mode, and closely contact with casing, the contact surface of rubber and casing is smeared fluid sealant in case of necessity.Adopt this touch-switch also can effectively improve switch reliability under little triggering power, the little stroke situation simultaneously, be fit to very much the characteristic of tube for transfusion.Fig. 4 is respectively that the button bowl bodies binds round outward that (Fig. 4 a) and the touch-switch structural representation formed of embedded (Fig. 4 b) two kinds of embodiment.

For reducing environment, reduce the interference of this utility model simultaneously to environment to interference of the present utility model.Be embedded in electrode slice (9) the connection circuit ground in clamping device (10) slot electrode (8), like this, when work battery shell just and electrode slice (9) electrode slice (4) the fundamental form ring formation of non-ground connection is enclosed form, play the effect of shielding, significantly reduced and disturbed and disturbed situation generation.

This utility model can use operation (having omitted part and the irrelevant medical professionalism operating procedure of this utility model in the narration) like this:

Under the normal condition, only need this monitoring infusion alarm is clamped on the appropriate location of tube for transfusion, just can work automatically.

But whether in order to guarantee not take place to slip up, will detect this monitoring infusion alarm to be used in advance can operate as normal, however nurse's in this respect professional skill and specific purpose tool not.So on the functional design to this monitoring infusion alarm, the ingenious routine operation of nurse before infusing that utilized realized automatic self-checking detection process.As long as the nurse makes simple judgement according to phenomenon, just knows that can this monitoring infusion alarm operate as normal, what problem occurs, can also deal with problems then and there.

Operation (self check) before the transfusion:

1, from packing, close choke valve earlier behind the taking-up tube for transfusion, then the tube for transfusion plug is inserted in the bottle stopper.

2, do not have medicinal liquid in the tube for transfusion this moment, this monitoring infusion alarm is clipped on the appropriate location of tube for transfusion.If have interrupted chimes of doom this moment, then carried out for " 3 " step.If do not report to the police this moment, may be not clip, do not install battery or this monitoring infusion alarm has fault, carried out for " 4 " step.

3, make outer choke valve, after medicinal liquid flows through the position of this monitoring infusion alarm clamping,, but just show operate as normal if this moment, chimes of doom stopped, carrying out for " 6 " step.If this moment, chimes of doom did not stop, showing that this monitoring infusion alarm has fault, carried out for " 5 " step.

4, battery or replacing monitoring infusion alarm again clip, reset.

5, close choke valve once more, the monitoring infusion alarm of more finishing changing, and there is interrupted chimes of doom the position that test is clipped in aneroid, the position chimes of doom that is clipped in liquid disappears, but shows operate as normal, opens choke valve again, carries out for " 6 " step.

6, carry out follow-up transfusion operation step.

Operation in the transfusion:

Under the normal condition, need not in the infusion process this monitoring infusion alarm is carried out any operation.

Operate during aneroid:

This monitoring infusion alarm sends interrupted chimes of doom during aneroid.If need not continue medicinal liquid, this monitoring infusion alarm was both taken off from tube for transfusion can pull out pin.If need continue medicinal liquid, then needn't move this monitoring infusion alarm, just can by the common bottle step operation of changing.

Points for attention:

In any stage, if continuous alarm sound takes place, show the cell voltage deficiency, must change battery immediately.

Beneficial effect

The obvious advantage of this utility model scheme is: 1,, use operation to meet nurse's operating routine, needn't take off this device when particularly changing dressings liquid.2, the bottle herb liquid drips off certainly during warning, neither can waste medicinal liquid, also must not lose time and wait for that a bottle herb liquid drips off.3, because tube for transfusion is longer, can also be clipped in pipe and go up diverse location according to different situations, reach different-effect.For example, be clipped in, will behind the bottle sky, report to the police as early as possible near bottle mouth position; And if last bottle just can be clipped in the following position of tube for transfusion column type reservoir so that medicinal liquid as much as possible be input into to report to the police again behind the human body pull out pin, bring into play more multiple medicines effect.4, the infusion bottle (bag) of adaptation all size, material, because it is the position that its detects is a tube for transfusion, irrelevant with the container of powder charge liquid.5, because electrode area reduces, distance is approaching, adopts shielding construction in addition, and it is subjected to external interference and disturbs extraneous degree just greatly to reduce.6, because all liquid enters the electric capacity that formed electric capacity all forms greater than blank pipe in the tube for transfusion, so this monitoring infusion alarm is to accurate monitoring alarm such as all medicinal liquids, blood, blood plasma, human body protein, and their different colors, light transmittance, proportion, conductive characteristic all do not influence operate as normal, need not debug this device during use yet.7, the vibrations that patient activity produces, the variation of ambient light do not influence the operate as normal of this monitoring infusion alarm.

Do not contact medicinal liquid during this utility model work, safety and sanitation, volume is little in light weight, and is simple and reasonable, easy to use, is well suited for promoting the use of, and uses this utility model can effectively alleviate doctors and patients' burden during transfusion.

Claims

1, a kind of monitoring infusion alarm is made up of capacitance type sensor, clamping device, casing, electronic circuit, touch-switch, battery, it is characterized in that: this monitoring infusion alarm adopts integral structure; Two plate electrode sheets of capacitance type sensor are held mechanism and are clamped in the tube for transfusion both sides; Touch-switch is electrically connected the switch level control end of integrated regulator; Interface circuit is electrically connected control circuit; The battery detection circuit is electrically connected battery and warning circuit.

2, monitoring infusion alarm according to claim 1, it is characterized in that: clamping device is to connect all-in-one-piece with casing by hinge, clamping device (10) can be around hinge (11) folding certain angle, respectively there is a longitudinal electrode groove at the clamping device and the casing back side, article two, the position of groove is corresponding mutually, and electrode slice in the bottom embedding of groove.

3, monitoring infusion alarm according to claim 1, it is characterized in that: have trip (12) to build the far-end of thin-walled (14) on the clamping device (10), trip, (12) there is clamping releasing piece (7) in the outside, trip (12) can be locked mutually with trip (5) effect at casing (2) back side, when trip (5,12) when locking mutually, can form one between two electrode slices (4,9) is the fixed capacitor of structure of medium with tube for transfusion (18).

4, monitoring infusion alarm according to claim 1, it is characterized in that: the electrode of capacitance type sensor adopts the flat electrode sheet, electrode slice cross section curvature is less than the curvature of tube for transfusion cross section under the naturalness, and clamping device clamps back two electrode slices and presses close to ultimate range between the surface of tube for transfusion less than the diameter of tube for transfusion.

5, monitoring infusion alarm according to claim 1 is characterized in that: the electrode slice surface of capacitance type sensor is coated with insulation and wear-resisting, corrosion resistant protective material.

6, monitoring infusion alarm according to claim 1 is characterized in that: the electrode slice (9) on the clamping device (10) is to be electrically connected circuit ground.

7, monitoring infusion alarm according to claim 1 is characterized in that: the button of touch-switch is the bowl bodies that adopts elastomeric material, the bowl bodies rubber stem stem of ining succession, and the bottom of stem stem is the conductive rubber contact.

8, monitoring infusion alarm according to claim 7 is characterized in that: the bowl bodies of touch-switch button is positioned on the casing by outer hoop or embedded mode, and closely contacts with casing.

9, monitoring infusion alarm according to claim 1 is characterized in that: interface circuit output can be wired or wireless.

10, monitoring infusion alarm according to claim 1 is characterized in that: battery detection circuit control warning circuit switches the caution sound that produces short of electricity.