CN200966808Y

CN200966808Y - Transfusion feedback alarm

Info

Publication number: CN200966808Y
Application number: CN 200620158989
Authority: CN
Inventors: 张为朵
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-08
Filing date: 2006-11-08
Publication date: 2007-10-31
Anticipated expiration: 2016-11-08

Abstract

The utility model relates to an infusion reaction alarm device used in the hospital, which comprises an air conduction cushion, an air conduit, a heart sound transmitter, a heart rate upper- and lower-limit recognizer, an alarm device and a control box; wherein the heart sound transmitter is connected with the air conduction cushion through the air conduit, and the heart sound of the patient is changed into an air pressure signal in the air conduction cushion and then passed to the heart sound transmitter; the device can detect the heart rate of the patients who need infusion without connecting an electrode with the human body, and also can determine whether the patients who need infusion generate the infusion reaction in accordance with the heart rate, which plays an active role in relieving the mental burden of the doctors and nurses and saving the patients who have the infusion reaction in advance.

Description

The infusion reaction alarm

Technical field

The infusion reaction alarm that can report to the police when this utility model relates to transfusion patient generation infusion reaction in a kind of hospital.

Background technology

The patient who has infusion reaction can occur when transfusion, often jeopardize patient's life as untimely rescue.But medical personnel can not in time find to occur the patient of infusion reaction because of being busy with one's work sometimes, and when infusion reaction appears in the patient who has simultaneously and do not know that the patient who also has had lost the calling for help ability at that time, these situations all are breakneck.Present stage is all used some main equipments to critical patient's monitoring, and these equipment mostly cost an arm and a leg, and hospital's outfit is often few, can not look after each transfusion patient.Application number is 88219639, and normally whether name is called the patent of " pocket heart monitor " can by judging heart to electrocardiosignal, and can report to the police.But it is because of will connecting electrode, so very inconvenient when using it for the infusion reaction monitoring at human body.Therefore, need a kind of equipment not connect electrode with human body, volume is small and exquisite, and is easy to use, cheap infusion reaction alarm.

Summary of the invention

This utility model provides a kind of equipment to connect electrode with human body, and is easy to use, cheap infusion reaction alarm.

Technical scheme

This utility model achieves the above object by following means: the hear sounds microphone connects with the conductance pad by airway, the conductance pad is pressed in below the human body, cardiechema signals reaches the conductance pad by people's skin of back, pass to the hear sounds microphone by airway again, so just realized not having the purpose that connects electrode between equipment and the human body.Be connected to heart rate bound evaluator in heart rate signal enumerator back, when heart rate occurs slowing down, stops jumping or accelerates, will trigger alarm equipment alarm.

Description of drawings:

Fig. 1 is an overall diagram

Fig. 2 is circuit theory diagrams

Fig. 3 is the conductance structural representation

The specific embodiment

In conjunction with the accompanying drawings can be to this utility model detailed description in addition.

(1) is the conductance pad among the figure, and (2) are airways, and (3) are control boxes, (4) be on and off switch, (5) are loudspeaker, and (6) are transmitting antennas, (7) be circuit board, (8) are the hear sounds microphones, and (9) are the heart rate signal enumerators, (10) be heart rate bound evaluator, (11) are alarms, and (12) are the aerating leather bags, (13) be vent valve, (14) are the hear sounds filter amplifiers, and (15) are " dripping " glottis discs, (16) be power amplification circuit, (17) are transmitting oscillators.

Figure (1) shows overall structure of the present utility model, and its conductance pad (1) is to adopt polyurethane rubber to make, and is shaped as the hollow sack of 50cm * 40cm size, and wall thickness is 3mm, covers the last layer cotton again in conductance pad (1) outside, is convenient to unpick and wash.Hear sounds microphone (8) connects with conductance pad (1) by airway (2), and the exit of airway (2) tightly is enclosed within on hear sounds microphone (8) shell, and airway (2) and conductance pad (1) are made of one in the blowing process.Aerating leather bag (2) adopts with the identical leather bag of light water argental mercury post sphygomanometer, is convenient to buy.Vent valve (3) is an integral structure with aerating leather bag (12), makes the slight rising of conductance pad (1) during aerating just.The variation that the heart beating sound that conductance pad (1) is experienced converts air pressure to is transmitted on the hear sounds microphone (8), and hear sounds microphone this moment (8) just is converted to cardiechema signals output to air pressure change.Hear sounds microphone (8) adopts commercially available Electret condenser microphone, and is cheap.

All elements all are positioned on the circuit board (7), and circuit board (7) is contained in control box (3) lining, and control box (3) adopts ABS plastic injection molded.On control box (3), be provided with loudspeaker (5), in order to emit the sound of warning.On control box (3), also be provided with on and off switch (4) in order to open or close the power supply of infusion reaction alarm.Transmitting antenna (6) is a flexible cable, and in order to alarm signal is emitted to nurses' office, tranmitting frequency adopts hospital's private radio band transmit, and general transmitting range is 100 meters.Receiver adopts the radio with corresponding reception frequency range, can buy the signal of drawing no longer in addition on market.

Circuit working principle of the present utility model is as follows: hear sounds microphone (8) will be gathered the hear sounds air pressure signal that comes and be converted to the signal of telecommunication, delivering to hear sounds filter amplifier (14) amplifies, the hear sounds filter amplifier has following function: with more than the 200HZ and the following frequency signal complete resection of 10HZ, to avoid interference.Cardiechema signals is amplified 10000 times, deliver to Cardiotacs (9) with the signal of output sufficient intensity, guarantee that Cardiotacs (9) can normally count, Cardiotacs (9) is by 3 seconds sampling countings at interval, the minimum like this heart beating that can measure per minute 20 times.Cardiotacs (9) is delivered to count results in the heart rate bound evaluator (10) and is discerned.Heart rate bound evaluator (10) circuit adopts 51 series monolithics to make, this circuit has following function: begin to gather heart rate signal as standard signal after patient lay down for 10 seconds, the normal state no interference signal that Cardiotacs (9) is sent here compares then, if with within the standard signal difference positive and negative 20% then be considered as normal, surpass positive and negative 20% circuit send " tick--; tick----" light chimes of doom, as surpassing positive and negative 30% rapid chimes of doom that sends " dichloro-diphenyl-dichlorothane drip ".Because the hear sounds filter amplifier has very strong capacity of resisting disturbance, also can not report by mistake so run into interfering signals such as patient stands up.

Alarm (3) circuit is added power amplifier integrate circuit (16) by doorbell sheet (15) that can send " ticking " sound and transmitting oscillator (17) and is formed.The signal one tunnel that the glottis disc (15) that " ticks " sends is sent to power amplification circuit (16) and amplifies the back by loudspeaker (5) playback, and launch after being sent to transmitting oscillator (17) modulation on another road.The model of power amplification circuit (16) adopts LM386, and loudspeaker (5) adopt the 60mm0.5W speaker.On and off switch (4) adopts single-pole double-throw switch (SPDT).

This utility model has adopted the conductance pad to gather cardiechema signals, thereby has accomplished that equipment and human body are electrodeless and connect, so easy to use.Because the most standard products that adopt of used element are easy to buying, production is simple, and is cheap, is convenient to promote, and this utility model can alleviate medical personnel's mental fatigue greatly after vast hospital promotes the use of, also can guarantee the safety of transfusion patient.

Claims

A kind of infusion reaction alarm of forming by hear sounds microphone (8), conductance pad (1), airway (2), Cardiotacs (9) and alarm (11), it is characterized in that hear sounds microphone (8) connects by airway (2) and conductance pad (1), is provided with heart rate bound evaluator (10) in heart rate signal enumerator (9) back.