CN211068457U - Infusion alarm based on dry battery driven electromagnetic relay - Google Patents

Abstract

The utility model discloses an infusion alarm based on a dry battery-driven electromagnetic relay, which comprises a replacement electrode, wherein the replacement electrode is inserted into an infusion bottle through an infusion bottle stopper, and the infusion alarm further comprises an input loop and an output loop; the input loop and the output loop are respectively provided with an independent power supply; the independent power supply is a No. 7 alkaline battery with 1.5V; wherein the replacement electrode is connected to an input loop through a lead, and an electromagnet normally-closed contact is arranged in the input loop and is connected with the green lamp; the normally open contact of the electromagnet in the output loop is connected with the red light and the electric bell which are connected in parallel. When the liquid level of the liquid in the infusion bottle is lower than 3cm, a conductor is lacked between the two electrodes on the infusion bottle, so that a circuit is disconnected, and the red light of the alarm is triggered to be on and ring. The infusion alarm based on the electromagnetic relay principle can automatically send out an alarm signal when the liquid level in an infusion bottle is lower than a specified height, has the advantages of simple structure, convenience in use, cleanness, sanitation, sensitivity, reliability and low manufacturing cost, and is suitable for infusion bottles of various models.

Description

Infusion alarm based on dry battery driven electromagnetic relay

Technical Field

The utility model relates to a device for automatically generating alarm signals based on the principle of an electromagnetic relay when liquid in an infusion bottle is about to be infused completely during human body infusion, in particular to an infusion alarm based on a dry battery driven electromagnetic relay.

Background

The infusion is carried out in a hospital or a clinic after the patient falls ill, if no person is in the patient's side for care, or the infusion is carried out at night, the patient falls asleep, the infusion is not called for a nurse to replace a medicine bottle after the infusion is finished, blood backflow can be caused, if blood platelets are coagulated, an infusion tube needs to be replaced during the next infusion, the workload of the nurse is increased, and the pain of the patient in secondary needle insertion is increased.

The infusion alarm provided by the application number 201310000397.X overcomes the defects that the existing infusion alarm is high in power consumption, not suitable for dark liquid medicine, not enough in adaptability, not timely in alarming and the like. According to the invention, when the rotary strip (301) rotates clockwise and drives the slide weight (216) to move upwards due to more swelling of the liquid in the infusion bag, the button cell is separated from the bare metal strip (401), and the voice chip is in a power-off state and does not sound; along with the reduction of the liquid in the infusion bag, the slide weight (216) moves downwards by virtue of the dead weight and drives the rotating strip (301) to rotate anticlockwise, when the volume of the liquid in the infusion bag is 5-10 milliliters, the button cell is in contact with the bare metal strip (401), and the voice chip is in a power supply state to send out an alarm sound. The invention has low power consumption, low cost, strong adaptability and long service life, and is suitable for large-scale popularization.

This patent adopts the effect of gravity to realize reporting to the police, has also overcome dark liquid medicine simultaneously, adaptability not enough, report to the police untimely not enough, but gravity is pure mechanical effect, and the product of this patent will lose efficacy when infusion bag liquid is bloated more and is changeed strip (301) easily when irregular, this moment.

Application No. 201711004894.1 a transfusion alarm system, comprising an induction electrode, a touch integrated circuit and a photoelectric coupler; the induction electrode is tightly attached to the infusion tube; the touch input end of the touch integrated circuit is connected with the sensing electrode; the power supply input end of the touch integrated circuit is connected with direct-current voltage; the output end of the touch integrated circuit is connected with a primary infrared transmitting tube of the photoelectric coupler; the primary infrared transmitting tube is connected with the direct-current voltage through a resistor; and the output end of a secondary phototriode of the photoelectric coupler is connected with a call switch of a call system. On one hand, the liquid information is acquired by adopting the induction electrode in a non-contact mode, so that liquid pollution can be avoided; on the other hand, the transfusion alarm circuit which is designed by adopting the high-sensitivity touch integrated circuit as the core and has low cost and practicability can be matched with a bedside calling system to realize the automatic calling function.

Application number 201720807931.1 the utility model relates to an infusion alarm, which belongs to the field of medical supplies. The utility model discloses an infusion alarm, which comprises a probe and an alarm unit. The probe comprises a light source, a photoresistor and a fixing clamp; the alarm unit comprises a power supply, a switch, a relay, an alarm, a wireless signal emitter and a wireless signal receiving alarm. When air appears in the infusion tube, the resistance value of the photosensitive resistor becomes small, the alarm and the wireless signal receiving alarm are triggered, and the alarm is given in time. The transfusion alarm has simple structure and convenient use.

What adopt in above-mentioned two patent documents is the principle realization of light sense or optoelectronic coupler, but when the liquid medicine was colourless, light sense or optoelectronic coupler just can't feel, can lead to the alarm to become invalid.

SUMMERY OF THE UTILITY MODEL

The utility model provides a transfusion alarm based on dry battery drive electromagnetic relay to improve current transfusion alarm light sense or the shortcoming of action of gravity, design a sensitive reliable, simple structure, convenient to use, clean health, low cost, durable's bit alarm in time reminds patient, patient's family members and nurse to change the medicine bottle.

Therefore, the technical scheme of the utility model, an infusion alarm based on dry battery drive electromagnetic relay, including the replacement electrode, the replacement electrode insert to the infusion bottle, its characterized in that through the infusion bottle plug: the infusion alarm further comprises an input loop and an output loop; the input loop and the output loop are respectively provided with an independent power supply; the independent power supply is a No. 7 alkaline battery with 1.5V, wherein the replacement electrode is connected into an input loop through a lead, and an electromagnet normally-closed contact is arranged in the input loop and is connected with the green lamp;

the normally open contact of the electromagnet in the output loop is connected with the red light and the electric bell which are connected in parallel.

The further improvement lies in that: the replaceable electrode inserted into the infusion bottle is of a cylindrical plastic structure, the upper end of the cylindrical plastic structure is provided with an inclined plane, the two metal electrodes are exposed out of the cylindrical plastic structure, and the two metal electrodes are output through a lead.

The further improvement lies in that: the replacement electrode is less than 3cm in length.

The further improvement lies in that: the shell of the infusion alarm is provided with a nylon hasp, so that the infusion alarm is fixed on an infusion bottle.

Has the advantages that:

the utility model discloses well input loop, output circuit have independent power supply respectively, can prolong operating time, increase the reliability. The independent power supply is a No. 7 alkaline battery with 1.5V, so that the battery is safe, reliable and convenient to replace; wherein the replacement electrode is connected to an input loop through a lead, and an electromagnet normally-closed contact is arranged in the input loop and is connected with the green lamp; when the liquid level in the infusion bottle is higher than 3cm (the length of the replaceable electrode is 3 cm), the liquid medicine is used as a conductor, so that the input loop is connected, the armature of the electromagnet is sucked down and is combined with the contact connected with the green lamp, and the green lamp of the output loop is on;

the normally open contact of the electromagnet in the output loop is connected with the red light and the electric bell which are connected in parallel, when the liquid level in the infusion bottle is lower than 3cm, a conductor is lacked between the replaceable electrodes inserted into the infusion bottle, so that the input circuit is disconnected, the armature rebounds, the normally open contact connected with the alarm device is combined, the red light of the output loop is on, the electric bell rings, and the switch connected with the electric bell can be closed after the electric bell rings, so that the electric bell is closed to prevent other patients from disturbing to rest.

The replaceable electrode inserted into the infusion bottle is of a cylindrical plastic structure, two metal electrodes are exposed on the inclined plane of the upper end of the replaceable electrode and can be contacted with liquid medicine in the infusion bottle, and the medicine (such as physiological saline, glucose and the like) can be used as a conductor to be communicated with a circuit.

The structure of inserting the infusion bottle is cylindrical, the upper end is an inclined plane, the infusion bottle is convenient to insert, the two electrodes are exposed on the inclined plane, and the structure of the part of inserting the infusion bottle is replaceable.

The replaceable electrode inserted into the infusion bottle and the shell are provided with nylon buckles, so that the alarm can be fixed on the infusion bottle and can be fixed on infusion bottles with different specifications. The alarm which can be fixed on the infusion bottle is connected with

The utility model discloses a replacement electrode judges whether liquid level is less than 3cm in the infusion bottle to judge whether to send out the police dispatch newspaper, remind patient or nurse in time to handle at once, change the medicine bottle, it is simple reliable, reduced patient, patient's family members and nurse's burden, make patient can rest at ease, can effectively prevent to infuse the harm that the medicine bottle brought not in time of changing after accomplishing simultaneously.

Drawings

Fig. 1 is a schematic view of the connection in use state of the present invention.

Fig. 2 is a circuit connection relation diagram of the transfusion alarm of the utility model.

In the figure, 1 is an infusion bottle, 2 is a replacement electrode, 3 is a lead, 4 is a nylon fastener, 5 is an alarm shell, 6 is a red light, 7 is a green light and 8 is an electric bell switch;

a is a metal electrode +, B is a metal electrode-, C is an input loop power supply, D is an output loop power supply, F is an electric bell, I is an electromagnetic relay armature, J is a normally open contact, K is a normally closed contact, L is an electromagnet, and M is a spring.

Detailed Description

As shown in the figures 1-2 of the drawings,

a transfusion alarm based on a dry battery driven electromagnetic relay comprises a replacement electrode 2, wherein the replacement electrode 2 is inserted into a transfusion bottle 1 through a transfusion bottle stopper, and the transfusion alarm further comprises an input loop and an output loop; the input loop and the output loop are respectively provided with an independent power supply, the independent power supply is a No. 7 alkaline battery with 1.5V, the safety and the reliability are realized, the replacement is convenient, wherein C is the input loop power supply, D is the output loop power supply,

wherein the replacement electrode 2 is connected into an input circuit through a lead 3, and an electromagnet normally closed contact K is arranged in the input circuit and is connected with a green lamp 7;

the electromagnet normally open contact J in the output circuit is connected with the red light 6 and the electric bell F which are connected in parallel.

The replaceable electrode 2 inserted into the infusion bottle is of a cylindrical plastic structure, the upper end of the cylindrical plastic structure is provided with an inclined plane, two metal electrodes are exposed out of the cylindrical plastic structure, the two metal electrodes are output through a lead 3, A is a metal electrode +, B is a metal electrode-; the length of the replacement electrode 2 is less than 3 cm.

The shell 5 of the transfusion alarm is provided with a nylon hasp 4, so that the transfusion alarm is fixed on the transfusion bottle 1.

When in use, the replaceable electrode 2 is inserted into the infusion bottle 1, and the replaceable electrode 2 is connected with a circuit inside the alarm shell 5 through a lead 5. The shell 5 of the alarm is provided with a green light 7, a red light 6 for displaying alarm signals and an electric bell switch 8. The nylon hasps 4 are arranged on the two sides of the alarm shell 5, the length is moderate, the alarm can be fixed on the infusion bottle 1, and the alarm can be used repeatedly.

The replacement electrode is a cylindrical plastic product which can be removed and replaced to ensure that the medicine is not polluted, the top end of the replacement electrode is an inclined surface to facilitate the insertion of the replacement electrode into an infusion bottle, and A on the inclined surface is a metal electrode + and B is a metal electrode-;

fig. 2 is the circuit structure diagram of the utility model, which is divided into an input circuit and an output circuit, and has two independent power sources: an input circuit power supply C and an output circuit power supply D.

When A, B is switched on, the input circuit is switched on, the electromagnet L is switched on, the electromagnet armature I is combined with the normally closed contact K connected with the green light 7, and the green light 7 is on;

when A, B is turned off, the electromagnet L is not energized, the armature I of the electromagnet is connected with a normally open contact J of an alarm device (the electric bell F, the electric bell switch 8 of the electric bell F and the red light 6), the red light 6 is on, the electric bell F rings, and the electric bell switch 8 can be turned off to turn off the electric bell.

The principle is that A, B in an input circuit is switched on, current generates a magnetic field through a coil of an electromagnet L, so that attraction force is generated on an armature I, a normally closed contact K is in contact with the electromagnet armature I, an output circuit is closed, a green light 7 is turned on, when A, B is switched off, the current in the coil disappears, the armature I is separated from the normally closed contact K under the action of a spring M and is in contact with a normally open contact J, the output circuit is switched on, a red light 6 is turned on, and an electric bell F rings.

The working voltage and the working principle of the patent are as follows:

the independent power supplies of the input and output loops of the infusion alarm based on the dry battery driven electromagnetic relay are all 1.5V No. 7 alkaline batteries, the industry regulations specify that the human body safe voltage is 36V, the safe current is 10mA, the minimum current value which can cause the human body to feel is called sensing current, the alternating current is 1mA, and the direct current is 5 mA; the degree of harm of electric shock to human body mainly depends on the magnitude of current passing through human body and the length of power-on time.

It is known from ohm's law (I ═ U/R) that the magnitude of the current flowing through the human body is related to the applied voltage and the resistance of the human body. Besides the resistance of human body, the resistance of clothes, shoes and trousers except human body should be added, the resistance of human body generally can reach 5000 omega, in addition, the factors influencing the resistance of human body are many, such as skin moisture and sweat, conductive dust, increase of contact area and pressure with charged body and moisture and oil stain of clothes, shoes and socks, etc., all can make the resistance of human body reduce, so the magnitude of current flowing through human body can not be calculated in advance usually. Therefore, to determine the safety condition, the safety current is often not used, but the safety voltage is used for the evaluation: in general, that is, in an environment where the risk of electric shock is high due to dryness, the safety voltage is set to 36V, and in an environment where the risk of electric shock is high due to moisture (for example, in a metal container or a pipe, welding inspection), the safety voltage is set to 12V.

From the safe current, the current generated by the electromagnetic relay transfusion alarm based on the voltage of 1.5V is about 0.3mA (1.5V/5000 omega) calculated according to the lowest resistance of a human body, is far lower than the sensing current of 55mA of the human body, the human body does not sense the current, all the influences on the human body hardly exist, and if the influences of the current on the human body are really worried about, a resistance of 5000 omega can be added to an input loop of the transfusion alarm.

In terms of safe voltage, a No. 7 1.5V alkaline battery is used, and the voltage is far less than 12V safe voltage.

Based on the above reasons, the infusion alarm does not harm human health, can solve and improve the defects of light sensation or gravity action of the existing infusion alarm, timely reminds patients, family members of the patients and nurses of changing medicine bottles, and has great social application value.

Claims (1)

1. The utility model provides an infusion alarm based on dry battery drive electromagnetic relay, includes the replacement electrode, the replacement electrode insert to the infusion bottle through the infusion bottle plug, its characterized in that: the infusion alarm further comprises an input loop and an output loop; the input loop and the output loop are respectively provided with an independent power supply; the independent power supply is a No. 7 alkaline battery with 1.5V;

wherein the replacement electrode is connected to an input loop through a lead, and an electromagnet normally-closed contact is arranged in the input loop and is connected with the green lamp;

the normally open contact of the electromagnet in the output loop is connected with the red light and the electric bell which are connected in parallel;

the replaceable electrode inserted into the infusion bottle is of a cylindrical plastic structure, the upper end of the cylindrical plastic structure is provided with an inclined plane, the two metal electrodes are exposed out of the cylindrical plastic structure, and the two metal electrodes are output through a lead;

the length of the replaceable electrode is less than 3 cm;

the shell of the infusion alarm is provided with a nylon hasp, so that the infusion alarm is fixed on an infusion bottle.

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