CN203885947U

CN203885947U - Infusion alarm device

Info

Publication number: CN203885947U
Application number: CN201420239940.1U
Authority: CN
Inventors: 付杰霖
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-05-12
Filing date: 2014-05-12
Publication date: 2014-10-22
Anticipated expiration: 2024-05-12

Abstract

The utility model discloses an infusion alarm device which comprises a shell, a first sensor and a second sensor. The shell is arranged on an infusion apparatus, the first sensor is arranged on the upper portion of the infusion apparatus, the second sensor is arranged on the lower portion of the infusion apparatus, a voltage comparator circuit, a trigger circuit, an oscillating circuit and a buzzer are arranged in the shell, an output end of the first sensor and an output end of the second sensor are respectively connected with an input end of the voltage comparator circuit, an output end of the voltage comparator circuit is connected with an input end of the trigger circuit, an output end of the trigger circuit is connected with an input end of the oscillating circuit, and an output end of the oscillating circuit is connected with the buzzer. The infusion alarm device has the advantages that power consumption and the circuit cost of the infusion alarm device are reduced on the basis that whether infusion is completed or not is monitored and alarm effects are realized, and the detection reliability can be improved.

Description

Infusion alarm

Technical field

This utility model relates to medical instruments field, particularly a kind of auxiliary equipment being applied on transfusion device.

Background technology

Transfusion device is one of apparatus conventional in medical field, is mainly used in setting up the medicine liquid channel between the medical containers such as infusion bottle or transfusion bag and vein.Existing transfusion device in use, need to whether carry by manual observation medicinal liquid complete, to notify in time nursing staff to change dressings, pull out the operations such as pin.If patient is sleeping in infusion process, fail to find in time that medicinal liquid conveying is complete, be very easy to cause gas to enter the malpracticees such as vein, blood backflow.For addressing the above problem, on market, there is a series of infusion alarm, be used for replacing artificial supervision, when transfusion device herb liquid is carried when complete, can automatic alarm, remind in time patient care personnel, improved the safety of transfusion, alleviate the burden that family numbers of patients is stayed in the ward to look after the patient night and day, there is higher practical value.But the infusion alarm occurring at present adopts single-sensor to coordinate single-chip microcomputer to go to control the technical scheme that buzzer is reported to the police more, there is following defect in this technical scheme: 1) because the cost of single-chip microcomputer is high, power consumption is large, makes that the product price of this type of alarm is higher and continuous service time is short; 2) only use a sensor for detection of, in actual use procedure, because infusion medicine and environment for use there are differences, make single-sensor easily cause false alarm or the situation of not reporting to the police occurs, reliability is poor.

Utility model content

This utility model technical issues that need to address are to provide a kind of with low cost, power consumption is lower and reliability is higher infusion alarm.

For solving the problems of the technologies described above, technical solution adopted in the utility model is as follows.

Infusion alarm, comprise the first sensor that is arranged on the housing on transfusion device and is arranged on transfusion device top and the second sensor that is arranged on transfusion device bottom, in described housing, be provided with voltage comparator circuit, flip-flop circuit, oscillating circuit and buzzer, the input that is connected respectively voltage comparator circuit of the outfan of the outfan of described first sensor and the second sensor, the outfan of voltage comparator circuit connects the input of flip-flop circuit, the outfan of flip-flop circuit connects the input of oscillating circuit, the outfan of oscillating circuit connects buzzer.

Improvement of the present utility model is: described first sensor is identical with the second sensor model number, all adopts photoelectric sensor or capacitance sensor.

This utility model is preferred: between described flip-flop circuit and buzzer, be provided with oscillating circuit.

Owing to having adopted above technical scheme, the obtained technological progress of this utility model is as follows.

This utility model adopts two sensors to gather the existence of liquid in transfusion device, and voltage comparator circuit is controlled buzzer according to the signal difference output triggering signal of two sensors monitoring.This utility model, without single-chip microcomputer is set, has reduced cost; Voltage comparator can adopt commercial comparator, and flip-flop circuit can adopt commercial trigger, and circuit overall power can be reduced to uA level, makes product longer service time.In addition, this utility model adopts upper and lower two sensors to carry out signals collecting, can make this utility model capacity of resisting disturbance stronger, is conveniently applicable to various transfusion occasions.The setting of oscillating circuit, can make buzzer in the process of piping, adopt the batch (-type) mode that pipes, and avoids long-term buzzing to impact patient.

Accompanying drawing explanation

Fig. 1 is electrical principle block diagram of the present utility model;

Fig. 2 is the electrical schematic diagram of first sensor circuit in embodiment 1;

Fig. 3 is the electrical schematic diagram of voltage comparator circuit in embodiment 1;

Fig. 4 is the electrical schematic diagram of flip-flop circuit in embodiment 1.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, this utility model is further elaborated.

An infusion alarm, comprises first sensor, the second sensor, voltage comparator circuit, flip-flop circuit and buzzer.Wherein first sensor arranges the top of the second sensor, and the second sensor setting, in the bottom of transfusion device, is provided with housing on transfusion device, and voltage comparator circuit, flip-flop circuit, oscillating circuit and buzzer are arranged in housing.The input that is connected respectively voltage comparator circuit of the outfan of the outfan of described first sensor and the second sensor, the outfan of voltage comparator circuit connects the input of flip-flop circuit, the outfan of flip-flop circuit connects the input of oscillating circuit, and the outfan of oscillating circuit connects buzzer.

In the present embodiment, first sensor is identical with the second sensor model number, all adopts photoelectric sensor.

As shown in Figure 1, wherein whether as shown in Figure 2, by the first photoelectric sensor, collect tube for transfusion top has liquid to exist to first sensor circuit to the electrical schematic diagram of the present embodiment, thus output the first voltage signal Volt1; The second sensor circuit is identical with first sensor circuit, output second voltage signal Volt2.

The first voltage signal Volt1 and second voltage signal Volt2 send into respectively the comparison that voltage comparator circuit carries out voltage signal, and comparative result, according to whether there being pressure reduction between Volt1 and Volt2, is exported control signal control.In the present embodiment, as shown in Figure 3, in the present embodiment, voltage comparator circuit adopts three audion Q1 ~ Q3 and current-limiting resistance and capacitor C 1 to form to the electrical schematic diagram of voltage comparator circuit.Can certainly adopt other circuit structures to realize the comparison of voltage.

Control signal control sends into flip-flop circuit and whether buzzer is sent to report to the police triggers.In the present embodiment, as shown in Figure 4, when transistor base is high level, buzzer Bell's electrical schematic diagram of flip-flop circuit does not report to the police; When the base stage of audion is low level, audion conducting, buzzer Bell obtains electric warning.

That is: when all there is liquid the top of transfusion device and the bottom of transfusion device, there is not voltage difference in the signal of first sensor and the second sensor acquisition, so buzzer is not reported to the police; And when the no liquid of the top of transfusion device, and the bottom of transfusion device is while having liquid, illustrating that transfusion is near completion, now the signal of first sensor and the second sensor acquisition produces voltage difference, voltage comparator circuit sends control alarm signal, through flip-flop circuit, triggers buzzer warning.

Certainly, described first sensor and the second sensor also can adopt capacitance sensor.

Claims

1. infusion alarm, it is characterized in that: comprise the first sensor that is arranged on the housing on transfusion device and is arranged on transfusion device top and the second sensor that is arranged on transfusion device bottom, in described housing, be provided with voltage comparator circuit, flip-flop circuit and buzzer, the input that is connected respectively voltage comparator circuit of the outfan of the outfan of described first sensor and the second sensor, the outfan of voltage comparator circuit connects the input of flip-flop circuit, and the outfan of flip-flop circuit connects buzzer.

2. infusion alarm according to claim 1, is characterized in that: described first sensor is identical with the second sensor model number, all adopts photoelectric sensor or capacitance sensor.

3. infusion alarm according to claim 1, is characterized in that: between described flip-flop circuit and buzzer, be provided with oscillating circuit.