CN202069950U

CN202069950U - Infusion monitoring alarm

Info

Publication number: CN202069950U
Application number: CN2011201637413U
Authority: CN
Inventors: 李益民
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-20
Filing date: 2011-05-20
Publication date: 2011-12-14
Anticipated expiration: 2021-05-20

Abstract

The embodiment of the utility model discloses an infusion monitoring alarm, which comprises a clamping piece which is used for clamping an infusion tube and an infusion monitoring alarm circuit which is arranged in the clamping piece. The infusion monitoring alarm circuit comprises a capacitor, a capacitance measuring unit, a microprocessor and an alarm, wherein the two polar plates of the capacitor are respectively arranged on the two sides of the infusion tube; the capacitance measuring unit is electrically connected with the capacitor and is used for measuring capacitance; the microprocessor is electrically connected with the capacitance measuring unit, controls the capacitance measuring unit to measure the capacitance and generates an alarm signal when the capacitance is decreased to a value above a preset proportional value; and the alarm is electrically connected with the microprocessor and alarms according to the alarm signal. Since embodiment of the utility model adopts the capacitance measuring unit and the microprocessor capable of realizing intermittent energy-saving working to judge whether liquid medicine is infused totally or not according to the relevant variation amplitude of the capacitance, the technical problems that the accuracy is difficult to ensure and the practical value is not high in the prior art are overcome, and the technical effects of high reliability, small, ingenious and simple structure, low cost and long service life are reached.

Description

Infusion monitoring alarm

Technical field

This utility model relates to the electron medical treatment technical field, relates in particular to a kind of infusion monitoring alarm.

Background technology

At present, the scope of application of venous transfusion and quantity are extensive unusually, single intravenous infusion old, children, seriously ill person, reach under the situation such as battlefield, all need personnel's long-time continuous and accompany monitoring, when a drops physic liquor will be totally lost, the entourage must in time notify medical personnel to change dressings or get pin, avoids harm such as blood back or air inlet to take place.In this process, the entourage is at full stretch and careful, and have to come back continually and pay close attention to liquid level variation in the medicine bottle, very inconvenience, especially night is arduous especially.When the care-giver takes place very easily to have an accident when sleepy.

Given this, people's utility model various transfusion autocues, the transfusion autocue that for example adopts machinery such as spring scale to monitor, but its accuracy is difficult to guarantee, not strong as the electromedical equipment practical value.

The utility model content

This utility model embodiment technical problem to be solved is, provides a kind of accuracy height, the infusion monitoring alarm that practical value is strong.

In order to solve the problems of the technologies described above, this utility model embodiment has proposed a kind of infusion monitoring alarm, the holder that comprises the clamping tube for transfusion, described infusion monitoring alarm also comprises the infusion monitoring warning circuit of being located in the described holder, described infusion monitoring warning circuit comprises: electric capacity, two pole plate are placed in described tube for transfusion both sides respectively; Be electrically connected on described electric capacity and be used to measure the capacitance measurement unit of described capacitance values; Be electrically connected and control that described capacitance measurement unit is measured, be decreased to the microprocessor that the preset ratio value produces alarm signal when above at described capacitance; Be electrically connected on alarm described microprocessor, that report to the police according to described alarm signal.

Further, described capacitance measurement unit is for measuring the integrated circuit or the special circuit of electric capacity, and wherein, described special circuit charges and discharge time method circuit for surveying LC frequency of oscillation method circuit or surveying RC.

Further, described microprocessor is a control intermittently used microprocessor able to programme.

Further, described infusion monitoring warning circuit also comprises and connects and be Mechanical Contact that the power supply circuits of described capacitance measurement unit and described microprocessor power supply, described power supply circuits comprise power supply and the are arranged at described holder inside type switch that declines.

Further, described power supply is a button cell.

Further, described alarm is buzzer and/or light emitting diode.

Further, the bare terminal end inboard of described holder is provided with the limiting section that mates with described tube for transfusion diameter.

This utility model embodiment adopts the intermittently capacitance measurement unit and the microprocessor of power saving operation mode, judge according to the relative amplitude of variation of electric capacity whether medicinal liquid is totally lost, overcome the technical problem that existing transfusion autocue accuracy is difficult to guarantee, practical value is not strong, reached reliability height, structure small and exquisite simple, cost is low and the technique effect of long service life; Simultaneously, because of this utility model embodiment in use with medicinal liquid any type of physics does not take place, chemistry contacts, avoided consequent any type of change and pollution to medicinal liquid, safety is very high.

Description of drawings

Fig. 1 is that the infusion monitoring alarm in a kind of embodiment of this utility model uses sketch map.

Fig. 2 is infusion monitoring alarm circuit theory diagrams shown in Figure 1.

Fig. 3 is the fundamental diagram of infusion monitoring alarm of the present utility model.

The specific embodiment

This utility model embodiment provides a kind of infusion monitoring alarm, and the principle of having taked to judge the relative amplitude of variation of electric capacity determines whether medicinal liquid is totally lost, can be flexibly at the transfusion device of different tube diameters and medicinal liquid kind, and Automatic Control need not artificial fine setting.Cardinal principle is: if in the tube for transfusion medicinal liquid is arranged, then these electric capacity two interpolar medium permittivity ratios are higher, and capacitance is just bigger; Otherwise after medicinal liquid dripped off, these electric capacity two interpolar medium dielectric constants were lower, and capacitance is just smaller.So, a bigger relative variation occurs, just can think that medicinal liquid soon thoroughly is totally lost, just can control alarm equipment alarm and point out as long as judge capacitance.

Please refer to Fig. 1～Fig. 3, infusion monitoring alarm of the present utility model comprises the holder 100 of clamping tube for transfusion and is located at circuit board (not shown) in the holder 100 that described circuit board is provided with infusion monitoring warning circuit (not shown).

Holder 100 is Flexible clamp or clamp, for cartoon characters such as the lovely butterfly of good looking appearance, loves, makes patient be in a cheerful frame of mind, alleviate patient's misery.

Described infusion monitoring warning circuit comprises electric capacity 10, capacitance measurement unit 20, microprocessor 30 and alarm 40.

Electric capacity 10, two pole plate is placed in described tube for transfusion both sides respectively, described two pole plates are the sheet metal of a pair of rectangular semicircle and described tube for transfusion diameter coupling, close up when the described tube for transfusion of holder 100 clampings, encircle the diameter coupling of size and described tube for transfusion when closing up.

Accordingly, the bare terminal end inboard of holder 100 is provided with a pair of circular groove that adapts with sheet metal 11 to accommodate fixing metal sheet 11.Sheet metal 11 is the sheet metal of copper product or Cu alloy material.The bare terminal end inboard of holder 100 also be provided with one with the limiting section 13 of described tube for transfusion diameter coupling, prevent under the extreme case the flat distortion of described transfusion pipe clamp.Limiting section 13 is cementation or round bar or the projection that is shaped in the bare terminal end inboard.

Capacitance measurement unit 20 is electrically connected on electric capacity 10 and is used to measure corresponding capacitance.Capacitance measurement unit 20 is for measuring the integrated circuit or the special circuit of electric capacity 10, and wherein, described special circuit charges and discharge time method circuit for surveying LC frequency of oscillation method circuit or surveying RC.

(Micro Control Unit MCU) is electrically connected microprocessor 30 and control capacitance measuring unit 20 is measured, and judges relatively that at microprocessor 30 described capacitance is decreased to the preset ratio value and produces alarm signal when above.Wherein, described ratio value scope is 10%～20%.Microprocessor 30 is a control intermittently used microprocessor 30 able to programme.Particularly, " open-minded " and " mourning in silence ", " mourning in silence " time between twice " open-minded " of microprocessor 30 itself, capacitance measurement unit 20 and peripheral alarm 40, blink etc. of " open-minded " is all by microprocessor 30 setting of programming in advance at every turn.The corresponding parameter that is provided with is per minute work 1 time, works 100 milliseconds at every turn.Adopt intermittent duty, even be because little bucket top short tube giving drugs into nose drop sky, but still have this moment the part liquid storage still can keep continuous dripping a few minutes in the little bucket, so from not needing the work of starting shooting continuously of this infusion monitoring alarm, only need its intermittent of short duration work of control, saved power consumption so greatly, so adopt the observation circuit of button cell also can work long hours.

Alarm 40 is electrically connected on microprocessor 30, is used for reporting to the police according to described alarm signal.Alarm 40 is buzzer 41 and/or light emitting diode 43.

Described infusion monitoring warning circuit also comprises the power supply circuits 50 that connect and be capacitance measurement unit 20 and microprocessor 30 power supplies, and power supply circuits 50 comprise power supply 51 and microswitch 53.

Power supply 51 is a button cell, is the formula that can change the outfit.

Microswitch 53 is the Mechanical Contact type switch that declines, be the main switch of described infusion monitoring warning circuit, the duty of control entire circuit is arranged at holder 100 inside, can trigger closure because of the described tube for transfusion of holder 100 clampings, after breaking away from described tube for transfusion, disconnect.

To sum up, operation principle of the present utility model can be summarized as: adopted pair of metal sheet 11 as the two-plate of electric capacity 10 in the tube for transfusion both sides, trigger microswitch 53 work during clamping and be the entire circuit power supply, capacitance measurement unit 20 measures described capacitance, programmable microprocessor 30 adopts intermittently power saving operation mode, control self off and on, capacitance measurement unit 20 and alarm 40 carry out work, control is opened capacitance measurement unit 20 every a Preset Time and is measured a capacitance, and gather this capacitance, microprocessor 30 presss from both sides an initial capacitance value that records behind upper tubing and the steady operation with infusion monitoring alarm and is made as reference value, then every a Preset Time, microprocessor 30 will collect capacitance and reference value compares, when described capacitance relative datum value is reduced to (as more than 20%) more than the preset ratio, then microprocessor 30 drives peripheral alarm 40 alarms of control.

The above is the specific embodiment of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from this utility model principle; can also make some improvements and modifications, these improvements and modifications also are considered as protection domain of the present utility model.

Claims

1. infusion monitoring alarm comprises the holder of clamping tube for transfusion it is characterized in that described infusion monitoring alarm also comprises the infusion monitoring warning circuit of being located in the described holder, and described infusion monitoring warning circuit comprises:

Electric capacity, two pole plate are placed in described tube for transfusion both sides respectively;

Be electrically connected on described electric capacity and be used to measure the capacitance measurement unit of described capacitance values;

Be electrically connected and control that described capacitance measurement unit is measured, be decreased to the microprocessor that the preset ratio value produces alarm signal when above at described capacitance;

Be electrically connected on alarm described microprocessor, that report to the police according to described alarm signal.

2. infusion monitoring alarm as claimed in claim 1 is characterized in that, described capacitance measurement unit is for measuring the integrated circuit or the special circuit of electric capacity, and wherein, described special circuit charges and discharge time method circuit for surveying LC frequency of oscillation method circuit or surveying RC.

3. infusion monitoring alarm as claimed in claim 1 is characterized in that, described microprocessor is a control intermittently used microprocessor able to programme.

4. infusion monitoring alarm as claimed in claim 1, it is characterized in that, described infusion monitoring warning circuit also comprises and connects and be Mechanical Contact that the power supply circuits of described capacitance measurement unit and described microprocessor power supply, described power supply circuits comprise power supply and the are arranged at described holder inside type switch that declines.

5. infusion monitoring alarm as claimed in claim 4 is characterized in that, described power supply is a button cell.

6. infusion monitoring alarm as claimed in claim 1 is characterized in that, described alarm is buzzer and/or light emitting diode.

7. infusion monitoring alarm as claimed in claim 1 is characterized in that, the bare terminal end inboard of described holder is provided with the limiting section with described tube for transfusion diameter coupling.