CN2659456Y - Transfusion speed monitor - Google Patents
Transfusion speed monitor Download PDFInfo
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- CN2659456Y CN2659456Y CN 200320111151 CN200320111151U CN2659456Y CN 2659456 Y CN2659456 Y CN 2659456Y CN 200320111151 CN200320111151 CN 200320111151 CN 200320111151 U CN200320111151 U CN 200320111151U CN 2659456 Y CN2659456 Y CN 2659456Y
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Abstract
The utility model relates to a transfusion speed monitor, which includes a monitor and a small pot for a transfusion set. The utility model is characterized in that the small pot of the transfusion set is provided with two stainless steel electrode needles which serve as the positive electrode and the negative electrode respectively. The top ends of the electrode needles are arranged in the small pot of the transfusion set, and the tail ends of the electrode needles are connected with the monitor by wires. The monitor includes a power supply arranged inside an outer casing, a pulse generator, a display, a keyboard and a single chip microcomputer. The single chip microcomputer mainly includes an arithmetic unit, a timer, a control unit, a data memory, a program memory, a system clock and an input output interface. All the parts are connected with each other by an internal bus, and exchange information through an external bus and other units of the monitor. The pulse generator, the display and the keyboard are connected with the single chip microcomputer through an input and output interface. The utility model can not only detect the transfusion speed, but also facilitate the working personnel to control the transfusion speed precisely and strictly. The utility model is simple in structure and convenient in promotion.
Description
Technical field
This utility model relates to a kind of transfusion drip speed monitor.
Background technology
Transfusion is the important channel and the base therapy method of clinical administration, and inpatient needs infusion treatment more than 90%.But all ages and classes, the desired transfusion drip speed of various disease and different pharmaceutical is diverse.For example old people and cardiac require transfusion drip speed slower, and shock and dehydration patient, especially young patient require transfusion drip speed very fast.Some medicine is very accurate, strict as the medicine of coronary artery dilating and the medicine requirement transfusion drip speed of thrombolytic-anticoagulant.Transfusion drip speed is generally seen the adjusting of table number number by the nurse, and need accompany and serve the people and nurse often yet clinically.Its shortcoming is first time-consuming, second inaccuracy, and the 3rd takes manpower.Infusion pump on the present market, though injection speed and dosage can accurately be controlled on request, has the function of transfusion drip speed monitor, complex structure cost height as ZNB-XB-800 type infusion pump, be difficult to penetration and promotion, thereby can not satisfy medical personnel and patient's needs.
Summary of the invention
For the transfusion drip speed monitor configuration complexity cost height that overcomes existing infusion pump, the deficiency that is difficult to popularize, this utility model provides a kind of volume little, easy to use, the transfusion drip speed monitor that cost is low, and it can accurately monitor transfusion drip speed, is convenient to popularize.
The operation principle that this utility model is taked is to convert transfusion drip speed to electric impulse signal by electrode needle, with the frequency of one chip microcomputer recording pulse signal (inferior/minute) and show on display screen, is transfusion drip speed at that time.
This transfusion drip speed monitor comprises monitor, transfusion device pipkin, it is characterized in that: inserting the positive pole of conduct respectively of two parallel arranged and the stainless steel electrode pin of negative pole at the middle part of transfusion device pipkin, two electrode needle are at a distance of 2～3mm.The tip of electrode needle can be inserted in the transfusion device pipkin, and tail end is connected with monitor with mini jack and lead outside the transfusion device pipkin, and its corresponding plug is the tail end of electrode needle.Monitor can convert transfusion drip speed to electric impulse signal, and with the frequency of one chip microcomputer recording pulse signal and on display screen, show with numeral, electrode needle and transfusion device pipkin can adopt split-type structural, level is inserted transfusion device pipkin middle and upper part during use, apart from about drop 10mm, extract, sterilize with finishing, in order to reuse.Electrode needle also can be fixed on the transfusion pipkin, becomes disposable product.When drop dropped on the electrode needle, positive and negative electrode linked to each other, and circuit is connected, and can produce the pulsatile once signal, in the input monitor.So electrode needle plays pulse generator by switching function.
Monitor has an alligator clamp behind, monitor can be hung on the transfusion suspension bracket.
Monitor can convert transfusion drip speed to electric impulse signal, with the frequency of one chip microcomputer recording pulse signal (inferior/minute) and show on display screen, is transfusion drip speed at that time.
Comprise installation power supply, pulse generator, display, keyboard and one chip microcomputer in the enclosure.Mainly contain arithmetical unit, intervalometer, controller, data storage, program storage, system clock and input/output interface in the one chip microcomputer, these parts interconnect by internal bus, and carrying out information exchange by other plurality of units of external bus and monitor, pulse generator, display, keyboard are connected with one chip microcomputer by input/output interface.Electrode needle is connected with the input of the pulse generator of monitor with lead.
One chip microcomputer is the control core of monitor, after pressing power button, is stored in the work that control sequence in its program storage is controlled whole monitor by execution; Pulse generator will be converted into undersuing by the transfusion drip speed that electrode needle and lead conduction are come, by one chip microcomputer this pulse signal is counted, (sampling interval) counted number of pulses is converted to pulse frequency also is transfusion drip speed at regular intervals, and shows at liquid crystal display equipment screen by output interface.
This utility model can be provided with alarm, when transfusion drip speed surpasses predefined high alarm setting or in limited time following, the warning handling procedure is set in one chip microcomputer, and the control of one chip microcomputer output signal is sent alarm signal as the light emitting diode and the buzzer of alarm; The keyboard operation of one chip microcomputer keyboard scan, content displayed on the switching liquid crystal display (transfusion drip speed, high alarm setting, low alarm setting, sampling interval) is adjusted warning bound, sampling interval, removes alarm signal.
Specifically describe the main composition and the connecting relation of viewer below.
The power supply of monitor is responsible for the on-off control and the voltage stabilizing of battery BT power supply, is made up of power switch circuit and power supply stabilization circuit two parts.Wherein power switch circuit mainly is made up of on and off switch button S1, pull-up resistor R1 and d type flip flop chip U1, switch key S1 makes the output signal counter-rotating of trigger chip U1, low-voltage that control voltage regulator chip U2 output is stable or output voltage signal not, thus make monitor work or do not work.One chip microcomputer and the miscellaneous part of voltage regulator chip U2 in monitor provides stable running voltage, the positive pole of battery BT is connected with the Vin port of voltage regulator chip U2, provide running voltage to power switch circuit, the input voltage signal of voltage regulator chip U2 also is provided.
Pulse generator is actually the pull-up resistor R2 that is connected between two input pins of one chip microcomputer, has a pin to be connected with electrode needle wherein, and public ground wire is connected with another root electrode needle.Pulse generator is converted to the electric impulse signal frequency by the electrode needle speed of dripping of dripping of will infusing.When drop passes through electrode needle, detect pulse generator and promptly produce a undersuing, and this signal is defeated by one chip microcomputer.
Control sequence in the one chip microcomputer working procedure memorizer, the pulse signal of sending here by external interrupt INT0 pin received pulse generator, repeat within a certain period of time it is counted, and count value is converted to transfusion drip speed shows at liquid crystal display.The timing controlled of one chip microcomputer is finished by the intervalometer of inside.Five pins of one chip microcomputer port P0 link to each other with five buttons of keyboard respectively, and the state of the scan value keyboard by reading these five pins.Can receive operator's intention, the displaying contents on the display screen is switched in output, or change transfusion drip speed warning bound, or change transfusion drip speed sampling time interval, or removes alarm signal.Eight pins of the port P2 of one chip microcomputer link to each other with display, and control the displaying contents of liquid crystal display by write port P2 output.Four pins of the port P1 of one chip microcomputer are connected with four current-limiting resistances of operation indicator elment respectively, when switching the keyboard displaying contents, one chip microcomputer is lighted the light emitting diode of operation indicator elment correspondence and is pointed out by writing four corresponding positions in the pin.The pin of the port P1 of one chip microcomputer is connected with the current-limiting resistance of the buzzer of alarm, when transfusion drip speed surpasses default warning bound, one chip microcomputer is by writing this pin control buzzer sounding, and prompting adjustment is dripped speed or replaced liquid.The RST reset pin of one chip microcomputer links to each other with " electric weight deficiency " display lamp of alarm, when the voltage regulator chip U2 of power supply output voltage is lower than the minimum running voltage of one chip microcomputer, one chip microcomputer is from RST pin output low level signal, make " electric weight deficiency " display lamp of alarm bright, change battery with prompting.
Keyboard is made up of five buttons.These buttons are " function selecting " button S2, " ▲ " (increase of the value of setting) button S3, " " (value of setting reduces) button S4, " affirmation " button S5, " alarm release " button S6.Each button is respectively connecting a pull-up resistor, and is connected with five pins of one chip microcomputer P0 end respectively through pull-up resistor; Each button is also connecting a shared pull down resistor, is connected with public ground wire through pull down resistor.Press " function selecting " button S2, liquid crystal display panels is switched demonstration transfusion drip speed, high alarm setting, low alarm setting, sampling interval.Warning bound and sampling interval can be increased key and be reduced key by the value of setting to be regulated, and is stopped to regulate and preserving by acknowledgement key.Press " alarm release " key, stop to report to the police, even transfusion drip speed overload alarm display lamp goes out, buzzer stops to ring.
Display is by 3 seven sections LCDs, and seven sections liquid crystal display decoder driver chip U4, U5, U6 and pull-up resistors are formed.Decoder driver chip U4, U5, U6 accept the binary-coded decimal demonstration information that one chip microcomputer port P2 sends by pull-up resistor, and decoding output shows that sign indicating number driving LCDs demonstrates digital signal corresponding for seven sections.
The operation indicator elment is made up of four current-limiting resistances and corresponding light emitting diode, four current-limiting resistances are respectively through each self-corresponding light emitting diode ground connection, it is transfusion drip speed to indicate the shown content of current LCDs that four current-limiting resistances are accepted the control signal that one chip microcomputer sends, or high alarm setting, still low alarm setting, XOR sampling interval.Alarm is by " drip speed transfinite " light emitting diode, " electric weight deficiency " light emitting diode, and buzzer, three current-limiting resistances are formed, and light emitting diode and buzzer are used for warning transfusion drip speed and surpass the upper limit or lower limit; And another light emitting diode is used for pointing out the electric quantity of power supply deficiency.
During use, earlier the electrode needle level is inserted transfusion device pipkin middle and upper part, opened the monitor power supply switch then, display screen shows 0, and monitor promptly enters normal operating conditions.The warning bound can at first be set, as long as drop drops on the electrode needle, the monitor LCDs can show transfusion drip speed at that time then.Too fast or slow excessively when transfusion drip speed, and be totally lost or liquid road when obstructed when liquid, transfusion drip speed overload alarm display lamp is glittering, and buzzer sends alarm sound simultaneously.
This utility model is taked said structure, can not only detect the speed of dripping of transfusion, and is convenient to the speed of dripping of accurate, the strict control drop of staff.Simple in structure, volume is little, cost is low, be convenient to popularize.
Description of drawings
Fig. 1 is the assembly drawing of this utility model embodiment.
Fig. 2 be electrode needle at transfusion device pipkin installation diagram, relatively Fig. 1 amplifies.
Fig. 3 is electrode needle and mini jack installation diagram, and Fig. 1 amplifies relatively.
Fig. 4 is the monitor composition diagram.
Fig. 5 is a power circuit diagram.
Fig. 6 is the circuit diagram that detects pulse generator and one chip microcomputer and keyboard.
Fig. 7 is LCD circuit figure.
Fig. 8 is operation indication and alarm circuit figure.
Fig. 9 is the monitor outline drawing, and Fig. 1 amplifies relatively.
Figure 10 is the working procedure flow chart.
Figure 11 is the interrupt service subroutine flow chart.
Figure 12 is an intervalometer interrupt service subroutine flow chart.
Subroutine flow chart is handled in the timing of Figure 13 sampling time interval.
Figure 14 processing subroutine flow chart of reporting to the police.
Figure 15 is that speed processing subroutine flow chart is dripped in start.
Figure 16 is a keyboard display monitoring subroutine flow chart.
Figure 17 is the keyboard scan subroutine flow chart.
Figure 18 is that the function selecting button is handled subroutine flow chart.
Figure 19 is that the value of setting increases button processing subroutine flow chart.
Figure 20 is that the value of setting reduces button processing subroutine flow chart.
Figure 21 is the acknowledgement key subroutine flow chart.
Among the above-mentioned figure:
1, infusion bottle 2, transfusion device pipkin 3, transfusion suspension bracket 4, monitor
5, lead 6, mini jack 7, electrode punch block 8, electrode needle
9, drop 10, plastic sheet 11, power supply 12, one chip microcomputer
13, pulse detector 14, keyboard 15, display 16, operation indicator elment
17, alarm 18, arithmetical unit 19, data storage 20, input/output interface
21, timer 22, controller 23, system clock 24, program storage
25, drip speed the transfinite not enough display lamp 27 of display lamp 26, electric weight, buzzer 28, shell
The specific embodiment
Below in conjunction with embodiment and description of drawings detailed structure of the present utility model and work process.
The transfusion drip speed monitor of Fig. 1 comprises monitor 4, transfusion device pipkin 2, it is characterized in that: disposing electrode punch block 7 and mini jack 6 at transfusion device pipkin 2, electrode punch block 7 has the stainless steel electrode pin 8 of two parallel arranged, respectively as positive and negative electrode, two electrode needle are at a distance of 2mm, the tail end of two electrode needle 8 can insert in the jack of mini jack 6, sees Fig. 3, and mini jack 6 usefulness electric wires 5 are connected with monitor 4.The tip of electrode needle 8 can be inserted in the transfusion device pipkin 2, and tail end is seen Fig. 2 outside transfusion device pipkin 2.The electrode needle 8 of present embodiment adopts split-type structural with transfusion device pipkin 2, and electrode needle 8 levels are inserted transfusion device pipkin 2 middle and upper parts during use, apart from about drop 10mm, extracts, sterilizes with finishing, in order to reuse.Electrode needle 8 also can be fixed on the transfusion pipkin 2, becomes disposable product.When drop 9 dropped on the electrode needle 8, positive and negative electrode linked to each other, and circuit is connected, and can produce the pulsatile once signal, in the input monitor 4.
The profile of monitor 4 is seen Fig. 9, and the inside composition of monitor 4 sees that Fig. 4, monitor 4 comprise power supply 11, pulse generator 13, display 15, keyboard 14 and the one chip microcomputer 12 that is installed in the shell 28.Operation indicator elment 16 and alarm 17 are installed in the front of shell 28.Mainly contain arithmetical unit 18, timer 21, controller 22, data storage 19, program storage 24, system clock 23 and input/output interface 20 in the one chip microcomputer 12, the outfan of pulse generator 13, keyboard 14 is connected with one chip microcomputer 12 by input/output interface 20.Electrode needle 8 usefulness leads 5 are connected with the input of the pulse generator 13 of monitor 4.Drop 9 is equivalent to K switch.The input of display 15, operation indicator elment 16, alarm 17 is connected with one chip microcomputer 12 by input/output interface 20.
The composition of power supply 11 inside is seen Fig. 5, and power supply 11 is responsible for the on-off control and the voltage stabilizing of battery BT power supply, is made up of power switch circuit and power supply stabilization circuit two parts.Wherein power switch circuit mainly is made up of on and off switch button S1, pull-up resistor R1 and trigger chip U1, make the counter-rotating of trigger chip U1 the 1st pin output signal by pressing switch key S1, the 3rd pin of being defeated by voltage regulator chip U2 is controlled stable low-voltage of the 5th pin output of voltage regulator chip U2 or output voltage signal not, thereby makes monitor work or do not work.The positive pole of battery BT is connected with the Vin port of voltage regulator chip U2, one chip microcomputer 12 and the miscellaneous part of voltage regulator chip U2 in monitor 4 provides stable running voltage, battery BT provide running voltage to power switch circuit, and the input voltage signal of manostat also is provided.
One chip microcomputer 12 is control cores of whole monitor, inside mainly is made up of arithmetical unit 18, controller 22, data storage 19, program storage 24, timer 21, system clock 23 and input/output interface 20, these parts interconnect by internal bus, referring to Fig. 4, and carry out information exchange by other plurality of units of external bus and monitor 4.Control sequence in the one chip microcomputer 12 working procedure memorizeies 24, the pulse signal of sending here by external interrupt pin INT0 received pulse generator 13, repeat within a certain period of time it is counted, and count value is converted to transfusion drip speed shows at liquid crystal display 15, the timing controlled of one chip microcomputer 12 is finished by the timer 21 of this computer-internal.P03, the P04 of the port P0 of one chip microcomputer 12, P05, P06, P07 pin link to each other with keyboard 14, the state of the scan value keyboard 14 of one chip microcomputer 12 by reading P03～P07, can receive operator's intention, the displaying contents on the display screen is switched in output, or change transfusion drip speed warning bound, or the change transfusion drip speed sampling interval, or remove alarm signal (display lamp goes out and stops buzzer 26 and rings even the speed in the alarm 17 transfinites).This while device 15 of the P20 of the port P2 of one chip microcomputer 12～P25 pin and liquid crystal display links to each other, and one chip microcomputer 12 is by the displaying contents of write port P2 output control liquid crystal display 15.P12, the P13 of the port P1 of one chip microcomputer 12, P14, P15 pin are connected with current-limiting resistance R11, R10, R9, the R8 of operation indicator elment 16 respectively, when switching keyboard 14 displaying contents, one chip microcomputer 12 is lighted the light emitting diode of operation indicator elment 16 correspondences and is pointed out by writing corresponding positions among P12, P13, P14, the P15.P10, the P11 of the port P1 of one chip microcomputer 12 links to each other with " the dripping speed transfinites " alarm lamp of alarm 17 and current-limiting resistance R13, the R12 of buzzer 26 respectively, when transfusion drip speed surpasses default warning bound, one chip microcomputer 12 makes " the dripping speed transfinites " display lamp in the operation indicator elment 17 glittering by writing P10, P11 position, control buzzer 26 sounding simultaneously, prompting adjustment is dripped speed or is replaced liquid." electric weight deficiency " display lamp of the RST reset pin of one chip microcomputer 12 and alarm 17 links to each other, when the voltage regulator chip U2 of power supply 11 output voltage is lower than one chip microcomputer 12 minimum running voltages, one chip microcomputer 12 is from RST pin output low level signal, make " electric weight deficiency " display lamp of alarm 17 bright, change battery with prompting.
The inside of display 15 connects sees Fig. 7, and display 15 is made up of 3 seven sections LCDs, seven sections liquid crystal display decoder driver chip U4, U5, U6 and pull-up resistor R15.P03, P04, P05, P06, the P07 pin that decoder driver chip U4, U5, U6 accept the port P0 of one chip microcomputer 12 by the pull-up resistor R15 binary-coded decimal of sending that links to each other with keyboard 14 shows information, and decoding output shows that sign indicating number drives LCDs and demonstrates digital signal corresponding for seven sections.
The inside of operation indicator elment 16 and alarm 17 is connected sees Fig. 8, operation indicator elment 16 is made up of four current-limiting resistance R8, R9, R10, R11 and corresponding light emitting diode D1, D2, D3, D4, four current-limiting resistances are respectively through each self-corresponding light emitting diode ground connection, it is transfusion drip speed to indicate the shown content of current LCDs that four current-limiting resistances are accepted the control signal that one chip microcomputer 12 sends, high alarm setting, low alarm setting and sampling interval.
The control mastery routine of monitor of the present utility model is seen Figure 10.
The control sequence of one chip microcomputer 12 is stored in the program storage 24.After pressing power button, 12 of one chip microcomputers are carried out this program, finish the follow-up work of aforementioned whole transfusion drip speed.Figure 10～Figure 21 is the flow chart of whole procedure, and division is as follows.
Whole procedure is made up of three parts, mastery routine, external interrupt service subprogram and intervalometer interrupt service subroutine.Mastery routine among Figure 10 is the initial of The whole control program, finishing system initialization successively is the system clock initialization, interrupt initialization, intervalometer initialization etc., " operation flag " is set is 0 (" operation flag "=0 when LCDs shows transfusion drip speed, " operation flag "=1 in limited time in the display alarm, following " operation flag "=2 in limited time of display alarm, " operation flag "=3 when showing the sampling interval), " starting logo " is set is that 1 (it is the speed that preceding 3 dropping liquids drip that speed is dripped in the pulse that at first shows after the sign start, " starting logo "=0 expression system enters the normal speed of dripping and monitors the sample operation, promptly calculate and change the transfusion drip speed that shows) every the regular hour, " sampling sign " is set is that 0 (the sign sampling time does not arrive, arrive " sampling sign "=1 when the sampling time), (transfusion is dripped and is caused external interrupt one time external interrupt time counter is set is 0, also be that the drop number is counted to outside interruption times enumerator in the interrupt service subroutine externally, its initial value should be 0), be provided with intervalometer regularly interrupt counter be that 0 (intervalometer interrupts once at regular intervals, in the intervalometer interrupt service subroutine, interruption times is added 1, can calculate the current time, so intervalometer interrupt counter initial value should be 0), second enumerator be set be 0 (by calculating and initialization can be determined the every interruption several times of intervalometer, it promptly is 1 second, will add 1 operation this moment to enumerator second, by second enumerator value determine whether sampling instant to, so the initial value of second enumerator also should be made as 0), " warning mark " is set is that 0 (the expression transfusion drip speed does not go beyond the limit, " warning mark " is 1, transfusion drip speed goes beyond the limit), starting intervalometer begins regularly, open interruption (allowing one chip microcomputer to receive external interrupt request and timer internal interrupt requests), timing is handled and (is judged and work as sampling instant then, calculate transfusion drip speed, and the warning mark value is set thus), report to the police and handle (whether value control alarm lamp and buzzer according to warning mark report to the police), referring to Figure 14, the keyboard display monitoring is seen Figure 16, suspend (being used for waiting for that external interrupt and intervalometer interrupt), interrupt disposing and continue to carry out the timing processing capacity.1 counting that adds that external interrupt service subprogram among Figure 11 is finished paired pulses waits work.Intervalometer interrupt service subroutine among Figure 12 is finished successively: regularly interrupt adding 1 counting, carry out timing in the time of enough 1 second and handle.
Timing is handled referring to Figure 13, a second Counter Value is at first judged in timing, when second Counter Value equal the sampling interval, illustrate that sampling instant arrives, then calculate normal infusion and drip speed (unit: droplet/minute)=(60 * intervalometer interruption times)/sampling interval, the sign of will sampling puts 1, and external interrupt enumerator and second enumerator is all clear 0, so that count pulse and regularly again.When second Counter Value be not equal to the sampling interval, then judge whether start-up phase, if starting logo is 1, then starts shooting and drip speed and handle, see Figure 15, when the external interrupt number of times was 1, preceding 3 dropping liquids dripped time counter clear 0; When the external interrupt number of times is 3, calculate the start time that transfusion drip speed=(60 * 2)/preceding 3 dropping liquids drip, the sign of will sample then puts 1, and starting logo is clear 0, and expression enters a normal fast supervision stage.
Keyboard display monitoring subprogram among Figure 16 judges at first whether the sampling sign is 1, if 0 is carried out the keyboard scan operation, sees Figure 17.If sampling be masked as 1 and the operation flag value be 0, expression transfusion drip speed sampling instant to and display screen should show transfusion drip speed, then show current transfusion drip speed, and will sample and indicate and be changed to 0, to begin the timing in new sampling interval.Then transfusion drip speed is judged, when surpassing high alarm setting or low alarm setting, warning mark is set is 1 (the sign transfusion drip speed surpasses the warning bound, when transfusion drip speed during in normal range, and warning mark=0).Then carry out the keyboard scan operation.When sampling be masked as 1 and operation flag non-0 the time, do not show current transfusion drip speed.
Keyboard scan subprogram among Figure 17 has judged whether that at first key presses, and presses as key, if function selecting key S2 then carries out " function selecting " button and handles, sees Figure 18; If alarm release key S6 is then with warning mark clear 0; If by " ▲ " (increase of the value of setting) key S3, then the value of setting increases processing, sees Figure 19; If by " " (value of setting reduces) key S4, then the value of setting reduces to handle, and sees Figure 20; If by " affirmation " key S5, then confirm the button processing, see Figure 21.
The operation that " function selecting " button is handled subprogram is: " operation flag " added 1, judge then " operation flag " if " operation flag " equals 4, then " operation flag " to be changed to 0 again, display screen shows transfusion drip speed; " operation flag " is 3 o'clock, shows the sampling interval; " operation flag " is 2 o'clock, the display alarm lower limit; Otherwise " operation flag " is 1, the display alarm upper limit.After showing sampling interval or high alarm setting or low alarm setting, will show that time counter is clear 0, the demonstration time is no more than 10 seconds continuously in order to control these information.
The operation that " ▲ " (increase of the value of setting) button S3 processing subprogram is finished is: judge " operation flag ", if operation flag is 0, illustrate that current operation is to show transfusion drip speed; If operation flag is 1, illustrate that current operation is the display alarm upper limit, and high alarm setting to be added 1, then carry out high alarm setting and add 1 operation, judge then whether the high alarm setting that adds after 1 surpasses the high alarm setting maximum, if surpassed, the high alarm setting before then recovering to revise, be that high alarm setting subtracts 1, otherwise show the high alarm setting that adds after 1; If operation flag is 2, illustrate that current operation is the display alarm lower limit, and low alarm setting will be added 1, then low alarm setting is added 1, if amended low alarm setting surpasses high alarm setting, then low alarm setting is subtracted 1, otherwise the low alarm setting behind the display update; If " operation flag " is 3, illustrate that current operation is to show the sampling interval, and the sampling interval to be added 1, then will the sampling interval add 1, whether judge the sampling interval greater than sampling interval maximum (as 50 seconds), if greater than, then will the sampling interval subtract 1, otherwise show the sampling interval that adds after 1, referring to Figure 19.
Figure 20 is seen in the operation that " " (value of setting reduces) button S4 processing subprogram is finished, and is similar to the operation that " ▲ " (increase of the value of setting) button S3 processing subprogram is finished.
" affirmation " button S5 handles the modification that subprogram is used for finishing high alarm setting, low alarm setting and sampling interval, promptly preserves the adjusted value of setting, and will " operation flag " clear 0, so that display screen continues the demonstration transfusion drip speed.
In any moment after powering on, the sampling interval of transfusion drip speed can be regulated by " increase of the value of setting " button S3, " value of setting reduces " button S4, regulates to finish by " affirmation " bond bundle.
When monitor 4 time spent not, press on and off switch and get final product powered-down.
The present embodiment record also shows 5-100 time/minute pulse electrical signal, every 5-50 once sampling in second, and upgrades.High alarm setting and lower limit can artificially be set, and transfusion drip speed is higher than the upper limit or is lower than down in limited time, and buzzer sends alarm sound.As transfusion drip speed is 50 times/minute, and high alarm setting is set to 55 times/minute, is limited to 45 times/minute down.
Claims (3)
1, a kind of transfusion drip speed monitor, it comprises monitor, transfusion device pipkin, it is characterized in that: inserting or fixing the positive pole of conduct respectively of two parallel arranged and the stainless steel electrode pin of negative pole at the middle part of transfusion device pipkin, two electrode needle are at a distance of 2～3mm, the tip of electrode needle is in the transfusion device pipkin, and tail end is connected with monitor outside the transfusion device pipkin and with lead; Monitor comprises installation power supply, pulse generator, display, keyboard and one chip microcomputer in the enclosure, monitor can convert transfusion drip speed to electric impulse signal, and with the frequency of one chip microcomputer recording pulse signal and on display screen, show with numeral; Mainly contain arithmetical unit, intervalometer, controller, data storage, program storage, system clock and input/output interface in the one chip microcomputer, these parts interconnect by internal bus, and carrying out information exchange by other unit of external bus and monitor, pulse generator, display, keyboard are connected with one chip microcomputer by input/output interface.
2, transfusion drip speed monitor according to claim 1, it is characterized in that: the power supply of monitor is made up of power switch circuit and power supply stabilization circuit two parts, wherein power switch circuit is mainly by on and off switch button S1, pull-up resistor R1 and d type flip flop chip U1 form, switch key S1 makes the output signal counter-rotating of trigger chip U1, low-voltage that control voltage regulator chip U2 output is stable or output voltage signal not, one chip microcomputer and the miscellaneous part of voltage regulator chip U2 in monitor provides stable running voltage, and the positive pole of battery BT is connected with the Vin port of voltage regulator chip U2;
Pulse generator is the pull-up resistor R2 between two input pins of one chip microcomputer of being connected that produces a undersuing when drop during by electrode needle, has a pin to be connected with electrode needle wherein, and public ground wire is connected with another root electrode needle;
One chip microcomputer port P0 has four pins to link to each other with four buttons of keyboard respectively, and the state of the scan value keyboard by reading these four pins; Eight pins of the port P2 of one chip microcomputer link to each other with display, and control the displaying contents of liquid crystal display by write port P2 output;
Keyboard mainly is made up of four buttons, and these buttons are button S5 that function selecting button S2, the value of setting increase button S3, the value of setting reduce button S4, affirmation function; Each button is respectively connecting a pull-up resistor, and is connected with four pins of one chip microcomputer P0 end respectively through pull-up resistor; Each button is also connecting a shared pull down resistor, is connected with public ground wire through pull down resistor;
Display is made up of 3 seven sections LCDs, seven sections liquid crystal display decoder driver chip U4, U5, U6 and pull-up resistors, decoder driver chip U4, U5, U6 accept the binary-coded decimal demonstration information that one chip microcomputer port P2 sends by pull-up resistor, and decoding output shows that sign indicating number driving LCDs demonstrates digital signal corresponding for seven sections.
3, transfusion drip speed monitor according to claim 2 is characterized in that: one chip microcomputer port P0 also has a pin connecting alarm release button S6, and the state of the scan value keyboard by reading this pin;
Four pins of the port P1 of one chip microcomputer are connected with four current-limiting resistances of operation indicator elment respectively, the operation indicator elment is made up of four current-limiting resistances and corresponding light emitting diode, four current-limiting resistances are respectively through each self-corresponding light emitting diode ground connection, and it is transfusion drip speed, high alarm setting, low alarm setting and sampling interval to indicate the shown content of current LCDs that four current-limiting resistances are accepted the control signal that one chip microcomputer sends;
The pin of the port P1 of one chip microcomputer is connected with the current-limiting resistance of the buzzer of alarm; The RST reset pin of one chip microcomputer links to each other with the insufficient display lamp of expression electric weight of alarm;
Alarm drips the fast light emitting diode that transfinites, the insufficient light emitting diode of expression electric weight, buzzer and three current-limiting resistances by expression to be formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320111151 CN2659456Y (en) | 2003-10-31 | 2003-10-31 | Transfusion speed monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320111151 CN2659456Y (en) | 2003-10-31 | 2003-10-31 | Transfusion speed monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2659456Y true CN2659456Y (en) | 2004-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320111151 Expired - Fee Related CN2659456Y (en) | 2003-10-31 | 2003-10-31 | Transfusion speed monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2659456Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106924838A (en) * | 2017-03-20 | 2017-07-07 | 上海正灏电子仪器有限公司 | Multifunctional medical infusion pump |
| CN111558104A (en) * | 2020-04-29 | 2020-08-21 | 重庆医科大学附属第二医院 | Intelligent infusion rod and working method thereof |
-
2003
- 2003-10-31 CN CN 200320111151 patent/CN2659456Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106924838A (en) * | 2017-03-20 | 2017-07-07 | 上海正灏电子仪器有限公司 | Multifunctional medical infusion pump |
| CN111558104A (en) * | 2020-04-29 | 2020-08-21 | 重庆医科大学附属第二医院 | Intelligent infusion rod and working method thereof |
| CN111558104B (en) * | 2020-04-29 | 2022-09-23 | 重庆医科大学附属第二医院 | Intelligent infusion rod and working method thereof |
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| C14 | Grant of patent or utility model | ||
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |