CN2889317Y

CN2889317Y - Portable alarm for medical transfusion

Info

Publication number: CN2889317Y
Application number: CN 200520145918
Authority: CN
Inventors: 李力; 李添翼
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-22
Filing date: 2005-12-22
Publication date: 2007-04-18
Anticipated expiration: 2015-12-22

Abstract

The utility model discloses a portable medical infusion alarm device. Based on the light projection and refraction principles and infrared technology, the device has a sampling circuit, a triggering alarm circuit and a control circuit fixed on the circuit board thereof. To avoid interference by the external light source, the shell is sealed from light; the sampling circuit uses complex optocoupler and has a colloid hollow calibration device on the bottom thereof. The device triggers the control circuit which has SCR such that the device can accurately switch the collected photoelectric signals to alarm signals and drive the annunciator to give an alarm by the SCR. The utility model mainly solves the low alarm sensitivity caused by the coming of the end of infusion or air bubbles generated for some reason, such that the utility model not only ensures the safety of the lives of patients, but also reduces the labor intensity of the medical staff.

Description

Portable medical transfusion alarm device

Technical field

This novel electronic machine that relates to a kind of venous transfusion monitoring, alarming belongs to a kind of portable medical transfusion alarm device.

Background technology

The clinical treatment of hospital, to the patient of continuous transfusion or the scene of the accident of burst, the scene that gives emergency treatment to a patient during large-area power-cuts that natural disasters such as earthquake cause; Patient to Army Hospital's military first aid in the modern war often needs continuous venous transfusion, and in the infusion process of medical personnel's shortage, the defeated sky of medicinal liquid very easily takes place or cause infusion pipeline to produce the phenomenon that bubble can not in time be found by certain reason.Can work the mischief and misery serious entail dangers to life like this to the patient.The medical transfusion alarm device of present disclosed employing photoelectric sense technology, its photoelectricity " emission one receives " part mostly is a single-stage discrete component mode, exist photoelectric conversion result not good enough, poor sensitivity, to occurring failing to report by bubble, sampled signal is subject to external light source and disturbs, and is suitable for disadvantages such as transfusion narrow range.

The utility model content

This is novel for overcoming above-mentioned medical transfusion alarm device, to in infusion process, there being bubble to pass through the problem that accurately to report to the police, and provide that a kind of volume is little, cost is low, highly sensitive, capacity of resisting disturbance is strong, and is simple to operate, the portable medical transfusion alarm device that the scope of application is wide.

Realize foregoing invention purpose technical scheme:

Portable medical transfusion alarm device comprises the seal casinghousing of lucifuge, is provided with sample circuit, trigger control circuit and warning circuit on the housing interior circuit board; Described sample circuit comprises the photoelectrical coupler of standard transmission or refractive, and also is provided with audion at the outfan of photoelectrical coupler, promptly constitutes compound photoelectrical coupler; Colloid hollow aligner also is housed in the bottom of this bonder in addition, places tube for transfusion on the hollow aligner, this aligner matches the optical axis of tube for transfusion centrage and photoelectrical coupler.Described trigger control circuit is provided with controllable silicon, and it is serially connected between warning circuit and the ground, and its control utmost point connects composite photoelectric bonder outfan by resistance R 3, R4.The alarm of warning circuit adopts integrated hermetically-sealed construction.

This novel compared with prior art beneficial effect is as follows:

1, this device has characteristics such as project organization is reasonable, capacity of resisting disturbance is strong, sensitivity height, and it has solved the problem that transfusion closes to an end or the interior generation of certain reason tube for transfusion bubble can not accurately be reported to the police.It mainly is on the intravital circuit board of shell the standard light electric coupler to be housed, and be provided with audion at its outfan and constitute compound photoelectrical coupler, its receptor gain is improved more than the Radix Achyranthis Bidentatae, infrared electro conversion of signals speed, response speed and stability have been improved, make this device in venous transfusion, strengthened sensitivity coloured or water white transparency liquid monitoring, alarming, prevented bubble, guaranteed under the noncontact mode, to gather alarm signal accurately and reliably by phenomenon occurring failing to report.For guaranteeing that described photoelectrical coupler is applicable to this device, colloid hollow aligner also is housed in the bottom of its photoelectrical coupler, utilize the deformation of soft aligner under the effect of it and cap, it is identical to adjust different transfusion device tube hub lines and photoelectrical coupler optical axis position automatically; In trigger control circuit, adopt the SCR control warning circuit in addition, till medical personnel get rid of warning, guaranteed that caution is accurately and reliably errorless.

Also adopted the lucifuge seal casinghousing for avoiding external light source to disturb, made this device sampling accurately, guaranteed that trigger control circuit converts photosignal to alarm signal, made controllable silicon control electronic alarm work accurately.

2, this device has characteristics such as the scope of application is wide, simple to operate, volume is little, energy consumption is low.Because this device circuit comprises compound photoelectrical coupler, circuit adopts integrated electronics and paster electronic component, so it adapts to all monitoring, alarmings colourless or colored transparent liquid.Consider the adaptability of this device in addition to the environment humidity, alarm select for use hermetically-sealed construction, acoustic pressure height (〉=85db), volume is little, in light weight, easy for installation, the active music buzzer that integrated level is high, it produces sound equipment with minitype acoustic generator, has overcome the deficiency that conventional loudspeakers is cried out at wet environment.This device chimes of doom grace loud and clear (in having an area of 10 meters), power consumption is low, and weight≤77g (volume is approximately the beeper size) does not have mechanical parts again, makes its suitable environment wideer, and it is not limited by environment, daytime, night; Current sinking is the mA level during music alarm, 4% when static monitoring stage current sinking is warning.Practice shows that a pair of battery can make its operate as normal 1 year.

Description of drawings

Fig. 1 is this new internal structural representation;

Fig. 2 is this novel use sketch map;

Fig. 3 is a circuit block diagram on Fig. 1 circuit board;

Fig. 4 is Fig. 3 circuit theory diagrams.

The specific embodiment

This device (referring to accompanying drawing 1～4), according to optical transmission and refraction principle, infrared technique, on housing 1 interior circuit board 3, be provided with sample circuit, trigger control circuit and warning circuit, sample circuit is made of compound photoelectrical coupler and resistance R 1, R2, the positive pole of its resistance R 1 one termination emitters, resistance R 2 connects the colelctor electrode of receptor, another termination positive source of resistance R 1, R2; Said compound photoelectrical coupler, constitute with audion T1 by standard transmission or refractive photoelectrical coupler 4, the minus earth of its audion T1 emitter stage and emitter, its photoelectrical coupler 4 is made of infrared transmitter and photelectric receiver, and said infrared transmitter and photelectric receiver are made up of infrared diode and phototriode.The infrared transmitter of this standard transmission or refractive photoelectrical coupler 4 and photelectric receiver are that relative position is fixed.

Described trigger control circuit is by resistance R 3, R4, and controllable silicon VS composition, and its controllable silicon is an one-way SCR.Resistance R 3 connects compound photoelectricity coupling receptor colelctor electrode and resistance R 2, the termination controllable silicon VS control utmost point that resistance R 4 links to each other with R3, resistance R 4 end and controllable silicon VS minus earth in addition.Warning circuit is made of capacitor C alarm in parallel, considers the adaptability of this device to the environment humidity, and alarm is selected the active electromagnetic type music buzzer H of integrated hermetically-sealed construction for use; Buzzer H positive pole connects power supply, and negative pole connects controllable silicon VS anode; When having bubble to pass through in the assigned address upper tubing or medicinal liquid when defeated empty, receptor is high impedance status and produces alarm signal.When in the tube for transfusion for medicinal liquid by the time, receptor is low impedance state alarm free signal and produces.Sample circuit is delivered to the controllable silicon VS control utmost point by audion T1 through resistance R 3, R4 with the alarm signal of obtaining, after the control utmost point obtains trigger voltage, and the work of controllable silicon VS guide alarm circuit.Accurately also be provided with colloid hollow aligner 7 for sampling in the bottom of photoelectrical coupler, be preferably silica gel hollow aligner, be shaped as the garden cylindricality, it is installed in the groove of transmission or refractive photoelectrical coupler, utilize the deformation of silica gel hollow aligner 7 under the effect of it and cap, it is identical to adjust different transfusion device tube hub lines and photoelectrical coupler optical axis position automatically.In venous transfusion, strengthened photoelectrical coupler to sensitivity coloured or water white transparency liquid monitoring, alarming.Guaranteed under the noncontact mode, to gather alarm signal accurately and reliably.

For avoiding external light source to disturb, housing 1 adopts lucifuge sealed, and has the semicircle gap 5 that tube for transfusion passes through at the two ends of housing 1.Preferably adopt plug-typely for the ease of the operation cap, the surface of housing 1 is provided with vocal hole and switch 8.This device 9 can be placed on the infusion pipeline any place, during use: as long as tube for transfusion is put on the hollow aligner 7 in circuit board standard photoelectricity coupling device 4 zones, again with tube for transfusion from housing 1 two ends semicircle gap 5 draw, battery is put into the groove 6 of housing 1, push to cap again and both can.Open housing 1 lip-deep switch 8, in the assigned address upper tubing, there is bubble to pass through photoelectrical coupler, it will be with the photosignal that collects, pass through trigger control circuit, convert alarm signal to and drive warning circuit work (under the effect of battery, can send graceful melody), till medical personnel get rid of warning (resetting switch afterwards, warning finishes).If environment for use is fixed, this device can cooperate the work of AC/DC power supply mode.Also can select button cell for use, if use button cell, this device volume can be littler, and weight is lighter.

Claims

1, portable medical transfusion alarm device, it comprises the seal casinghousing (1) of lucifuge, is provided with sample circuit, trigger control circuit and warning circuit on housing (1) interior circuit board (3); Described sample circuit comprises standard transmission or refractive photoelectrical coupler (4), it is characterized in that: the outfan at this photoelectrical coupler is provided with audion (T1), promptly constitutes the composite photoelectric bonder; Colloid hollow aligner (7) also is housed in the bottom of this bonder in addition, and hollow aligner (7) is gone up and is placed tube for transfusion, and this aligner matches tube for transfusion centrage and photoelectrical coupler optical axis; Described trigger control circuit comprises controllable silicon (vs), and it is serially connected between warning circuit and the ground, and the signal of described photoelectrical coupler output connects the SCR control utmost point by the trigger voltage that resistance R 3, R4 produce; The alarm that is provided with in the described warning circuit adopts integrated hermetically-sealed construction.

2, portable medical transfusion alarm device according to claim 1, it is characterized in that: the photoelectrical coupler of described standard transmission or refractive is to be made of infrared transmitter and photelectric receiver, and the infrared transmitter of transmission or refractive photoelectrical coupler (4) and photelectric receiver are that relative position is fixed.

3, according to claim 1 or 2 described portable medical transfusion alarm devices, it is characterized in that: said colloid hollow aligner (7) adopts silica gel material.

4, portable medical transfusion alarm device according to claim 3 is characterized in that: said colloid hollow aligner (7) is the garden cylindricality.

5, portable medical transfusion alarm device according to claim 4 is characterized in that: controllable silicon adopts one-way SCR (VS) in the described trigger control circuit.

6, portable medical transfusion alarm device according to claim 5 is characterized in that: the alarm of described warning circuit is active minisize electromagnetic music buzzer (H).