CN2544730Y

CN2544730Y - Micro computerized intravenous transfusion controller

Info

Publication number: CN2544730Y
Application number: CN 02230211
Authority: CN
Inventors: 贾微微
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-03-25
Filing date: 2002-03-25
Publication date: 2003-04-16
Anticipated expiration: 2012-03-25

Abstract

The utility model relates to a microcomputer intravenous infusion regulator, which pertains to the technical field of medical devices. The utility model mainly comprises a box body and a fixed clamp, wherein, the back of the box body is provided with a hanging hook, the box body is firmly hung on the fixed clamp, the interior of the box is provided with a circuit system and a mechanical drive part. The circuit system includes a power supply circuit, a photoelectric detection circuit, an indicating circuit, an alarm circuit and a limiting circuit. The mechanical drive part mainly comprises a stepper motor and a flow regulating valve, the front and the back of the regulating valve are respectively provided with limit protective switches; the regulator has reasonable design and very high precision, which is the multifunctional microcomputer intravenous infusion regulator with the protective function.

Description

Micro computer venous transfusion modulator

This utility model relates to a kind of micro computer venous transfusion modulator, belongs to technical field of medical instruments.

In clinical vein transfusion, air admission vein or when preventing that transfusion from will finish according to patient's different situations regulation and control transfusion drip speed.Existing transfusion modulator is to obtain the dropping liquid signal by optical sensor from black Fei Shi pipe both sides, by after the single-chip microcomputer processing pulse signal being transferred to motor, control valve on the rotation push-pull shaft of motor makes and puts at the tube for transfusion pressurized of control valve front end or loosen and control transfusion drip speed.Present venous transfusion modulator adopts the form of hanging and control valve front and back infinite place protector; usually indefinite because of the swing of transfusion modulator; photo-sensor signal will often can not get normal reception; produce the illusion that tube for transfusion stops up or leads directly to; control valve usually is pushed moves extreme position to; make the motor stall cause control valve and motor shaft stuck phenomenon, thereby influenced its practicality.

This utility model designs the limit switch device before and after having adopted fixed clamp mode and control valve, cooperates the design of position limitation protection circuit, has effectively guaranteed the accurate reception of photo-sensor signal will really, has guaranteed the normal rotation of motor.Liquid drop speed has obtained effective control.This utility model provides multifunctional microcomputer venous transfusion modulator a kind of reasonable in design, safe and reliable.

For achieving the above object, further illustrate this utility model below in conjunction with drawings and Examples.

Fig. 1: circuit block diagram of the present utility model.

Fig. 2: circuit structure diagram of the present utility model.

Fig. 3: structural representation of the present utility model.

Present embodiment has for modulator and fixedly mounts clip (1) with the clamping drip stand, the modulator front is provided with the matrix chamber (2) of laying black Fei Shi pipe, intracavity is provided with photoelectric sensor (3) and rubber-like China ink Fei Shi pipe clamp (4), China ink Fei Shi pipe (5) is placed in the matrix chamber (2), clamped by elasticity folder (4), the modulator back side is provided with hook (21).Clip (1) is clipped on the drip stand, (21) firm modulator being fixed on the clip (1) of modulator hook, and the dropping liquid signal in the black Fei Shi pipe (5) has been guaranteed the accuracy of signal by the normal reception of photoelectric sensor (3).Circuits System and Mechanical Driven part are installed in the case.

Panel is provided with display lamp (6), operation prompting display screen (7), and option keys (8) adds key (9), operation key (10), reset key (11) subtracts key (12), checks key (13).

Mechanical Driven partly is provided with motor (14); decelerator (15); the decelerator output screw partly is equipped with nut (16); it is to be embedded in the control valve (17) that ABS plastic makes; control valve the place ahead is infusion rubber tubing (18) and front limit protection switch (19), and the control valve rear end is back position limitation protection switch (20) not.When transfusion is in straight-through or stops up, the limit before and after control valve (17) will be pushed and move to, protection switch before and after pressing; protection switch transfers signals to single-chip microcomputer and handles before and after this moment; control valve is got back to original state, reports to the police simultaneously, has solved control valve front and back stuck phenomenon effectively.

This utility model has changed suspending way in the past, has set up the front and back limiting and protecting device of control valve, effectively raises the reliability of transfusion modulator really, has really realized the purpose of unmanned nurse transfusion.

Circuits System comprises power circuit, photoelectric sensor circuit, button inputting circuits, chip microprocessor circuit, indication, warning, limit circuit, memory circuit, liquid crystal display circuit, motor and drive circuit thereof.Circuit part is summarized as follows:

Various requirement at first will infusing passes through S ₁, S ₂, S ₃, S ₄, S ₅, S ₆To A ₁Preset setup parameter, obtain the dropping liquid signal by photoelectric sensor 01 from the Murphy's dropper both sides and enter A ₃, through A ₃Shaping, filtering export N to ₂, at N ₂Enter A after anti-phase ₁External counting pulse input end IAT1.Deliver to greensignal light (L simultaneously ₃) foot, low level makes it luminous.So whenever, the drop of liquid of dripping, A ₁Just obtain a count pulse, this pulse signal with preset setup parameter and pass through A ₁Routine processes, from A ₁The 32nd, 33,34 foot output control pulses, drive stepping motor.While A ₁The 6th, 7,8 feet connect display driver N ₃Thereby, drive liquid crystal display.A in addition ₁The 16th, 17 feet connect storage chip A ₅, in order to the parameter of transfusion before preserving.S ₇, S ₈Be the front and back limit switch; N ₁The driving loudspeaker are reported to the police; L ₁Be the warning red led.

This circuit power part AC/DC, normal working voltage are+5V when voltage drops to below the 4.5V, to pass through N _4.5And Single-chip Controlling liquid crystal display.A ₁The 12nd foot, 14 feet be used for controlling display backlight source and battery charge time respectively.

When using this instrument, clip (1) is clipped in the below of infusion bottle on the drip stand, the hook (21) of modulator back is hooked on the clip (1) securely, fix modulator, go in the matrix chamber (2) by black Fei Shi pipe (5).Energized, single-chip microcomputer resets, and control valve (17) is got back to the rearmost end position automatically, and infusion rubber tubing (18) is placed on control valve (17) front end centre position.By reset key (11), machine detects tube for transfusion automatically, enters the initial setting state then.Set to drip number, transfusion total amount, transfusion time, carry alert amount, cast by option keys (8), the size of setting value enters running status by adding key (9), subtracting key (12) and regulate by operation key (10).Display lamp (6) will glimmer once when every one drop of liquid, the calculated signals that single-chip microcomputer detects according to photoelectric sensor (3) goes out per minute and drips number and compare number with setting value, sending the positive and negative rotation push-and-pull of pulse enable signal motor control valve (17) according to its positive negative error single-chip microcomputer then compresses or loosens infusion rubber tubing (18) accurately according to the operation of the parameter that sets, run duration, by checking key (13), display screen (7) shows current transfusion state.When the one bottle of liquid that sets dripped off, modulator was also pointed out except that the generation chimes of doom and is changed the bottle, and control valve (17) will clamp infusion rubber tubing (18) transfusion automatically to be stopped, and prevents the air admission vein.Transfusion this operational factor that finishes will go on record.

Claims

1, a kind of micro computer venous transfusion modulator, it is by casing, and Circuits System and Mechanical Driven are partly formed, the matrix chamber that there is a panel in the casing front and lays black Fei Shi pipe, intracavity is provided with photoelectric sensor and rubber-like China ink Fei Shi pipe clamp.It is characterized in that this modulator has for modulator mounts clip (1) with the clamping drip stand, and the modulator back side is provided with hook (21), links up with (21) firm modulator being fixed on the clip (1).

2, modulator according to claim 1 is characterized in that Mechanical Driven part decelerator (15) axle adjusted valve (17) front end is provided with position limitation protection switch (19), and the rear end is provided with position limitation protection switch (20).