CN201500339U - Infusion flow rate monitoring and alarm device - Google Patents

Abstract

The utility model discloses an infusion flow rate monitoring and alarm device which belongs to the field of alarm devices, and comprises a pipe clamp and a circuit board. The circuit board comprises a battery power supply, an infusion flow rate detection module, an independent simple keyboard, an AT89S51 single-chip microcomputer, a decoding chip CC4511, a digital tube, a sound-light alarm device and the like. The pipe clamp clamps an infusion tube to be detected, the infusion flow rate detection module on the circuit board detects and obtains the infusion speed and transmits the speed to the single-chip microcomputer, the single-chip microcomputer processes the speed, and the digital tube displays the infusion speed; when liquid is not dripped within a certain period of time, a speaker immediately gives alarm, and simultaneously, an LED flashes. The infusion flow rate monitoring and alarm device has the advantages of simple and novel structure, safe and reliable use, low cost and convenient use, can detect the flow rate of infusion in real time, and can give alarm for a patient and the medical personnel in time after infusion.

Description

Infusion flow rate monitoring and alarm device

Technical field

This utility model relates to a kind of medical supplies, particularly a kind of infusion flow rate monitoring and alarm device.

Background technology

At present, when patient infused in hospital, the flow velocity of transfusion often can't be held, and the patient who has adjusts transfusion speed excessive and causes therapeutic effect undesirable, and showed by the detection constantly of transfusion speed, can adjust the optimum flow rate that is fit to patient; Secondly, some patient drowsiness can occur when transfusion, can not in time pull out pin and the blood backflow phenomenon occurs when transfusion finishes.

Summary of the invention

This utility model provides a kind of infusion flow rate to detect and alarm device at the deficiencies in the prior art, and this device can detect the flow velocity that shows transfusion in real time, and can in time send warning when transfusion finishes.

For achieving the above object, the technical scheme that this utility model is taked is: a kind of infusion flow rate monitoring and alarm device, it is characterized in that: this device comprises the pipe clamp that is clipped on the tube for transfusion and is contained in the control circuit board of pipe clamp one side, on a clamp of pipe clamp, infrared transmitting tube is housed, on another clamp of pipe clamp infrared receiving tube is housed, infrared transmitting tube all is connected with control circuit board with infrared receiving tube.

Control circuit on the control circuit board of described control comprises keyboard, infusion flow rate detection module, single-chip microcomputer, decoder, display screen and alarm module; Keyboard is connected with single-chip microcomputer respectively with the infusion flow rate detection module, and single machine output end connects decoder and alarm module respectively, and decoder output connects display screen.

The beneficial effects of the utility model are: this apparatus structure is simple, novel, and is safe and reliable, and cost is low, easy to use, can detect the flow velocity of transfusion in real time, and can give the alarm in time for when transfusion finishes patient and medical worker.

Description of drawings

Fig. 1 is this device overall structure figure;

Fig. 2 is the electric theory diagram of control circuit;

Fig. 3 is the input and the display screen display output circuit figure of keyboard;

Fig. 4 is infusion flow rate testing circuit figure;

Fig. 5 is sound light alarming circuit figure.

Among the figure; 1. pipe clamp, 2. circuit board, 3. infrared transmitter, 4. infrared remote receiver, 5. pin, 6. spring.

The specific embodiment

In Fig. 1, this device comprises the pipe clamp that is clipped on the tube for transfusion 1 and is contained in the circuit board of pipe clamp 1 one sides, on a clamp of pipe clamp 1 infrared transmitting tube 3 is housed, on another clamp of pipe clamp 1 infrared receiving tube 4 is housed, infrared transmitting tube 3 all is connected with circuit board 2 with infrared receiving tube 4.

In Fig. 2, the control circuit on the control circuit board 2 comprises keyboard, infusion flow rate detection module, single-chip microcomputer, decoder, display screen and alarm module; Keyboard is connected with single-chip microcomputer respectively with the infusion flow rate detection module, and single machine output end connects decoder and warning circuit respectively, and the outfan of decoder connects display screen.

In Fig. 3, this system adopts simple relatively free-standing button, 10 button difference corresponding datas 0～9.When button all was not pressed, 8 interfaces and P2.0, the P2.1 of single-chip microcomputer P1 were high level; If a certain button is pressed, then the interface of button correspondence is a low level, and single-chip microcomputer monitored the level variation of the corresponding interface and carried out corresponding subprogram this moment, and the four figures with the keyboard correspondence is sent to the P0 mouth according to code simultaneously, through the CC4511 decoder for decoding, drive display screen.For example, 0 P1.0 that pushes button drops to low level by high level, when Single Chip Microcomputer (SCM) system scanning P1 mouth and P2.0, P2.1, monitors the variation execution subroutine of P1.0, and program is carried out low four of back P0 mouth and become 0000.The P0 mouth hangs down four inputs of delivering to 3 CC4511 decoders respectively, and such three CC4511 decoders all have been set up the identical number that presets, if be provided with ten for preset the several sheets that then only need press ten select key then ten demonstrations preset number.In like manner can divide by gating position and hundred, put to count up to and finish the back by definite key, then single-chip microcomputer is finished monitoring and the control to infusion set automatically.

In Fig. 4, the speed of transfusion detects and adopts the detection of infrared electronic technology realization to transfusion.The threshold voltage of comparator LM311 is an adjustable voltage, can provide the voltage of 0.8V-5V, to adapt to varying environment.When not having transfusion through infrared sensor induction zone (zone between VD1 and the VD2), receiving tube VD2 conducting, V at this moment ₊Link to each other with negative pole, i.e. V ₊=0V; And $V_{-}=\frac{R5}{R4+R5}*5V,$ So V ₊＜V _-, comparator LM311 output low level is given single-chip microcomputer P2.5 port.When transfusion process induction zone, the light that infrared transmitting tube sends was blocked in an of short duration time, and of short duration ending appears in receiving tube VD2, at this moment V ₊=5V, and $V_{-}=\frac{R5}{\mathrm{<figure-callout\; id="4"\; label="R"\; filenames="H2009202325892E00011.png"\; state="\{\{state\}\}">R</figure-callout>}4+R5}*5V,$ So V ₊＞V _-, high level pulse of comparator output is given one-chip machine port P2.5, and what in fact one-chip machine port P2.5 obtained is a biography pulse, the frequency that single-chip microcomputer can obtain infusing by the frequency of calculating pulse, just Shu Ye speed.

In Fig. 5, when transfusion was not dripped in a period of time (such as 30s), single-chip microcomputer P2.7 mouth sent pulse signal, and single-chip microcomputer drives speaker warning and the flicker of LED lampet immediately, reminds medical personnel and is subjected to the liquid people to take corresponding measure, avoids peril to take place.

When the patient infuses, transfusion speed still adopts manual adjustment, by the infusion flow rate checkout gear detected pulse signal is passed in the single-chip microcomputer, single-chip microcomputer carries out computing with the signal that receives, signal after the computing is connected with input, the sound light alarming circuit of decoder respectively through the output pin of single-chip microcomputer, the outfan of decoder directly links to each other with display screen, so just can detect flow velocity in real time by display screen, when flow velocity is always zero in a period of time, buzzer sends alarm sound at once, simultaneously the LED LED flash.

Claims (6)

1. an infusion flow rate is monitored and alarm device, it is characterized in that: this device comprises pipe clamp (1) that is clipped on the tube for transfusion and the control circuit board (2) that is contained in pipe clamp (1) one side, on a clamp of pipe clamp (1), infrared transmitting tube (3) is housed, infrared receiving tube (4) is housed on another clamp of pipe clamp (1), and infrared transmitting tube (3) all is connected with control circuit board (2) with infrared receiving tube (4).

2. infusion flow rate monitoring according to claim 1 and alarm device, it is characterized in that: the control circuit on the described control circuit board (2) comprises keyboard, infusion flow rate detection module, single-chip microcomputer, decoder, display screen and alarm module; Keyboard is connected with single-chip microcomputer respectively with the infusion flow rate detection module, and single machine output end connects decoder and alarm module respectively, and decoder output connects display screen.

3. infusion flow rate monitoring according to claim 2 and alarm device, it is characterized in that: described keyboard is free-standing simple and easy keyboard.

4. infusion flow rate monitoring according to claim 2 and alarm device, it is characterized in that: described single-chip microcomputer is AT89S51.

5. infusion flow rate monitoring according to claim 2 and alarm device, it is characterized in that: described decoder is CC4511.

6. infusion flow rate monitoring according to claim 2 and alarm device, it is characterized in that: described display screen is a charactron.

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