CN209790542U

CN209790542U - heating device capable of monitoring in-place for infusion or flushing

Info

Publication number: CN209790542U
Application number: CN201822253444.2U
Authority: CN
Inventors: 刘继航
Original assignee: Tianjin Worms Medical Devices Co Ltd
Current assignee: Tianjin Worms Medical Devices Co Ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2019-12-17
Anticipated expiration: 2028-12-29

Abstract

a heating device that can monitor that targets in place for infusing or washing, including the epitheca, the inferior valve, the display screen, the heating plate, the heat-conducting plate, the main control board, solid state relay, switch, wherein the heating plate divides heating plate and lower heating plate, the heat-conducting plate divides heat-conducting plate and lower heat-conducting plate, form the inner chamber in the middle of the upper and lower heat-conducting plate and be used for placing the liquid bag, the heat-conducting plate entrance is equipped with inlet and liquid outlet and makes the liquid bag take out mouth of taking out more easily, be equipped with temperature sensor RT1 on the last heat-conducting plate of liquid outlet top, be equipped with photoelectric switch U6 at the end of last heat-conducting plate, new heating device can realize in the infusion, the even constant temperature heating of blood transfusion or flushing process, and easy to use, the.

Description

Heating device capable of monitoring in-place for infusion or flushing

Technical Field

the utility model relates to a heating device which is used for infusion or washing and can be monitored in place, in particular to the heating device which is applied to medical infusion, blood transfusion and clinical washing.

Background

The infusion and the washing are important clinical treatment means, particularly, a large amount of infusion liquid medicine, blood and washing in an operation are washed, the infusion liquid medicine and washing liquid in the operation are usually stored at normal temperature or low temperature in practical use, most of blood is stored in a refrigeration house, and because the temperature of the input liquid is low, the low body temperature is caused by a large amount of input, so that great harm is brought to patients, such as operation incision infection, cardiovascular adverse events, blood coagulation function reduction, anesthesia recovery time extension, hospital stay extension and the like, and therefore the liquid needs to be heated in the infusion process. Therefore, warming during infusion is a common clinical aid, and intraoperative irrigation is also used, but the time is urgent, so that the utilization rate is not high.

The heating methods which are commonly used clinically at present comprise water bath heating, incubator heating, infusion tube heating and the like. The water bath heating can bring germs to the surface of the pipeline through the water bath, and medical staff or patients can be carried to a purification area, a purification clothes or a purification glove after contacting, so that cross infection is easily caused to patients with wounds or other diseased parts are easily spread through mucous membrane contact, and the medical staff or the patients are potential sources of nosocomial infection.

The incubator heating is one of the commonly used heating modes, liquid needs to be placed in the incubator in advance to be heated, the heating speed is low, time is consumed, and the incubator is not suitable for emergency transfusion or blood transfusion; the temperature of the heated liquid is not accurately displayed, and the temperature control is not accurate; the static liquid is heated, and the heating is uneven, which may cause the change of the physicochemical property of the medicine; the heat preservation effect is poor, heat loss is large in the infusion process, and the infusion process is usually carried out by heating firstly and then cooling; the heating rate is limited by the initial temperature of the liquid, the lower the initial temperature, the slower the heating.

The transfer line heating is the commonly used mode at present, and the transfer line heating of patent number ZL 200420036761.4 is mainly through putting into heating device with the pipeline, and the pipeline heated area of this kind of way is very limited, and liquid has not heated to the temperature in the pipeline often and has flowed to the low reaches, therefore on this problem, some ways are with directly putting into heating device the bag body, or set up very high temperature on heating device and reach the purpose of rapid heating, like the patent number: ZL 03241419.6, however, also creates a safety hazard in that plastic packaging or piping is subject to high temperature melting or chemical precipitation. There are also solutions to increase the heating area by coiling the pipes inside the heating device, as in patent No.: ZL 201520889903.X, patent No.: ZL201730673014.4, patent application No.: ZL 201830317017.9, which does increase the heating area but makes the tube become quite long, the tube is very easy to kink or hang on other objects during use, and it is very inconvenient to coil the tube during each use, and both of the above solutions have slow heat conduction and poor use effect due to the specific thickness of the infusion tube itself. And the equipment is often bigger, and the transportation is inflexible and the installation is also very loaded down with trivial details, is difficult to use.

Disclosure of Invention

In view of the deficiencies in the prior art, the utility model provides a can monitor the heating apparatus who targets in place for infusing or washing utilizes the instant heating technique of dry-type, heats comfortable temperature with liquid safety rapidly, helps maintaining patient's body temperature, prevents the harmful effects that the hypothermia arouses the patient.

The utility model discloses a realize the purpose, the technical scheme who adopts is: a heating device that is used for infusing or washing can monitor that targets in place, including epitheca, inferior valve, display screen, switch, main control board, the main control board includes microcontroller circuit, power supply circuit, heating circuit, demonstration and warning circuit, its characterized in that: the temperature control device is characterized by further comprising an upper heating plate P10, a lower heating plate P11, a heat conducting plate, a temperature sensor RT1, a photoelectric switch U6 and a solid-state relay Q5, wherein the heat conducting plate is divided into an upper heat conducting plate and a lower heat conducting plate, a U-shaped groove is formed in the lower surface of the upper heat conducting plate, a rectangular groove I and a rectangular groove II are arranged at the opening of the U-shaped groove at intervals, and the rectangular groove I and the rectangular groove II extend inwards from the opening of the U-shaped groove; the lower heat conducting plate is a flat plate, the lower heat conducting plate and the upper heat conducting plate are buckled with each other, a U-shaped groove of the upper heat conducting plate and the lower heat conducting plate form an inner cavity with a linear opening, a liquid inlet and a liquid outlet are respectively formed by the rectangular groove I and the rectangular groove II and the lower heat conducting plate, a temperature sensor RT1 is arranged on the upper heat conducting plate above the liquid outlet, a photoelectric switch U6 is arranged at the tail end of the upper heat conducting plate, a lower heating plate P11 is tightly attached to the lower surface of the lower heat conducting plate, an upper heating plate P10 is tightly attached to the upper surface of the upper heat conducting plate, a combination of the upper heating plate P10, the heat conducting plate and a lower heating plate P11 is fixed in the lower shell, the display screen is embedded on an inclined plane at the front end of the upper shell, the main;

The main control board further comprises a temperature measuring circuit backup alarm circuit and an in-place detection circuit, the microcontroller circuit is respectively connected with the temperature measuring circuit, the backup alarm circuit and the in-place detection circuit, the temperature measuring circuit and the backup alarm circuit are respectively connected with the temperature sensor RT1, the backup alarm circuit is connected with the heating circuit, the heating circuit is respectively connected with the upper heating plate P10 and the lower heating plate P11 through the solid-state relay Q5, and the power supply circuit is respectively connected with the display and alarm circuit, the heating circuit and the microcontroller circuit.

the temperature measuring circuit is specifically connected as follows: the pin 2, the pin 3, the pin 6 and the pin 7 of the voltage stabilizing circuit U8 are grounded, the pin 1 of the voltage stabilizing circuit U8 is respectively connected with the resistor R24, the temperature sensor RT1, one end of the capacitor C23 and the capacitor C24 and the pin 8 of the voltage stabilizing circuit U8, the other end of the resistor R24 is connected with one end of the capacitor C32 and the 5V power supply, the other end of the capacitor C32 is grounded, the other end of the capacitor C23 is grounded, the other end of the temperature sensor RT1 is respectively connected with the other end of the capacitor C24, one end of the capacitor C30 and one end of the resistor R28, and the resistor R28 is connected with the other end;

The backup alarm circuit is specifically connected as follows: pins 6, 7 and 12 of a comparator U are grounded, pin 1 of the comparator U is connected with a resistor R, the other end of the resistor R is respectively connected with a 5V power supply, one end of the resistor R and one end of a capacitor C, pin 2 of the comparator U is respectively connected with the other end of the resistor R and pin 2 of a logic gate circuit U, pin 3 of the comparator U is respectively connected with the 5V power supply and one end of the capacitor C, one end of the resistor R and one end of the capacitor C are connected with one end of the resistor R, the other ends of the resistor R, the resistor R and the resistor R are connected with pin 1 of a temperature stabilizing circuit U, the other ends of the capacitor C, the resistor R, the other end of the resistor R and the resistor R are respectively grounded, pin 13 of the comparator U is respectively connected with one end of the resistor R and pin 3 of the logic gate circuit U, pin 14 of the comparator, The other ends of the 8 pins and the 9 pins, the resistor R20 and the resistor R21 are connected with one end of a capacitor C34 and a 5V power supply, the other ends of the capacitor C34 and the capacitor C33 are grounded, the 1 pin of the logic gate U3 is connected with the 1 pin of the logic gate U4, the 4 pin of the logic gate U3 is connected with the 2 pin of the logic gate U4, the 10 pin of the logic gate U3 is connected with the 8 pin and the 9 pin of the logic gate U3, the 7 pin of the logic gate U3 is grounded, the 10 pin of the logic gate U3 is connected with the 9 pin of the logic gate U4, the 11 pin and the 12 pin of the logic gate U3 are connected with the 2 pin of a power switch S2, the 3 pin of the power switch S2 is connected with the 5V power supply, the 1 pin is grounded, the 13 pin of the logic gate U3 is connected with the 4 pin of the logic gate U4, the 14 pin of the logic gate U3 is connected with one end of a capacitor C5 and the 5V power supply, the other end of the, a pin 5 of the logic gate circuit U4 is connected with a pin 30 of the microcontroller circuit singlechip U5, a pin 6 of the logic gate circuit U4 is connected with a pin 10 of the logic gate circuit U4, a pin 7 of the logic gate circuit U4 is grounded, pins 8, 12 and 13 of the logic gate circuit U4 are respectively connected with a pin 1 of the heating circuit power switch chip Q4, a pin 14 of the logic gate circuit U4 is respectively connected with a 5V power supply and one end of a capacitor C6, and the other end of the capacitor C6 is grounded.

The in-place detection circuit is specifically connected as follows: the 3 pins of the comparator U7D are respectively connected with one end of a current-limiting resistor R16, one end of a resistor R17, one fixed end of an adjustable resistor R33 and a voltage of 5V, the positive input end of the comparator U7D is connected with the collector of the receiving end of the photoelectric switch U6 and the other end of the resistor R17, the negative input end of the comparator U7D is connected with the adjustable end of the adjustable resistor R33, the 12 pin of the comparator U7D, the other fixed end of the adjustable resistor R33, the emitter of the receiving end of the photoelectric switch U6 and the cathode of the emitter of the photoelectric switch U6 are grounded, the anode of the emitter of the photoelectric switch U6 is connected with the other end of the current-limiting resistor R16, and the output end of the comparator U7D is connected with the 15 pin of the.

Microcontroller U5 model is: PIC24FJ128GC 006; the voltage stabilizing circuit U8 has the model number: TL 431; comparator U7 model is: LM 239; logic gate circuit U3 model is: SN74HCT 02; logic gate circuit U4 model is: SN74HCT 00; comparator U7D model is: and LM 239.

The display screen uses 2.7 cun OLED screen, and visual angle is greater than 160. The upper heat conducting plate and the lower heat conducting plate are made of high-strength aluminum alloy materials. One side of the upper shell is also provided with a fixed handle which is a hoop. A handle is also arranged on the upper surface of the upper shell. Go up the inboard of rectangle recess I and rectangle recess II on the heat-conducting plate and be equipped with two and take out a recess I, be equipped with two on the heat-conducting plate down with taking out a recess I corresponding position and take out a recess II, take out a recess I and take out a recess II and form two and take out the mouth.

the use method of the warming device which can monitor the position for infusion or irrigation comprises the following steps: before use, an operator inserts the liquid container into an inner cavity formed by the upper heat conducting plate and the lower heat conducting plate through the linear opening, when the liquid container is inserted into the bottom of the inner cavity, the tail end of the liquid container just shields the photoelectric switch U6, light reflected to the receiving end of the photoelectric switch U6 is intensified to cause the change of output voltage, the level of the output end of the comparator U7D is changed by comparing the level with reference voltage through the comparator U7D, the microcontroller circuit detects the level change to know the in-place information of the liquid container, the microcontroller circuit controls the display and alarm circuit BUZ1 to sound through the output pin, the display screen is controlled to display an in-place icon, then the inlet of the liquid container is confirmed to be arranged in the liquid inlet, the outlet of the liquid container is arranged in the liquid outlet, when the liquid container is used, the power switch is turned on, the heating device is started, the microcontroller on the main control panel measures the temperature through the temperature sensor RT1 in the temperature measuring, the microcontroller controls the heating circuit, when the temperature is lower than the target temperature, the microcontroller transmits a signal to the heating circuit, a solid-state relay Q5 of the heating circuit is closed, the heating sheet starts to work, the microcontroller calculates the power required to be heated through a PID algorithm, then the power is converted into the duty ratio of heating of the upper heating sheet P10 and the lower heating sheet P11, the power is output to the solid-state relay Q5 through a PWM module of the microcontroller, the upper heating sheet P10 and the lower heating sheet P11 are switched on, the upper heating sheet P10 and the lower heating sheet P11 heat the heat-conducting plate, and the heat-conducting plate heats the liquid container; when the temperature approaches to the target temperature, the heating power is lower and lower, after the temperature reaches the target temperature, the liquid container is kept at the target temperature until the infusion or flushing process is finished, after the use, an operator takes out the liquid container, the photoelectric switch U6 is not blocked by the tail end of the liquid container any more, the light reflected to the receiving end of the photoelectric switch U6 is weakened, the output voltage returns to the value when the liquid container is not inserted, the output level of the comparator U7D is changed, the information of the removed liquid container is transmitted to the microcontroller circuit, the microcontroller controls the buzzer BUZ1 of the display and alarm circuit to sound two sounds through the output pin through the circuit, the display screen is controlled to display the dislocation icon at the same time, and the power supply of the heating device can be disconnected at the moment.

Abnormal alarming and protecting mechanism in the using process: if the liquid container falls off carelessly, the buzzer BUZ1 can be excited to sound two sounds and the display screen displays the dislocation icon; if the temperature is lower than the low-temperature alarm point or higher than the first high-temperature alarm point, the microcontroller controls the backup alarm circuit to give an alarm and displays related alarm information on a display screen; if the temperature is higher than the second high-temperature alarm point, the microcontroller directly controls the reed relay REL1 to perform power-off treatment on the solid-state relay Q5, the upper heating plate P10 and the lower heating plate P11; if the microcontroller can not normally control the power failure, the backup alarm circuit can also realize the functions of power failure and alarm, and the safety of the heating device in use is ensured.

Before use, the heating device is fixed on the medical bracket rod through the fixed handle.

When the device is used for blood transfusion or infusion, the target temperature is 41 ℃, the low-temperature alarm point is 33 ℃, the first high-temperature alarm point is 43 ℃, and the second high-temperature alarm point is 46 ℃ for flushing, the target temperature is 41 ℃, the low-temperature alarm point is 33 ℃, the first high-temperature alarm point is 48 ℃, and the second high-temperature alarm point is 50 ℃.

The utility model has the advantages that: through the shape of the inner cavity of the heating device matched with the sheet-shaped liquid container with the corresponding size, the uniform and temperature-controllable heating is realized on the basis of not changing the basic length of the original infusion apparatus, the liquid is safely and rapidly heated to a comfortable temperature, the body temperature of a patient is favorably maintained, the adverse effect caused by the hypothermia on the patient is prevented, and the overhigh and overlow heating temperature or the high and low time are avoided.

but heating device adopts the circuit design of automatic change heating power, can adjust heating power by oneself after reaching preset temperature, keeps the target temperature, can not melt or separate out chemical because of the material that the high temperature made liquid container, and heating device has the autoalarm function to can in time obtain warning when unexpected situations such as shut down because of outage, misoperation or other reasons lead to and make the correspondence. The upper heating plate is tightly attached to the upper heat conducting plate, and the lower heating plate is tightly attached to the lower heat conducting plate, so that liquid can be uniformly and efficiently heated. The solid-state relay has the characteristics of small input power, high sensitivity, small control power, good electromagnetic compatibility, low noise, high working frequency and the like. The microcontroller has abundant functions and peripheral interfaces, and saves external devices.

The display part uses a 2.7-inch OLED screen, the temperature range is wide, the visual angle is larger than 160 degrees, the display font is large and clear, and the display part has a good visual effect under the poor illumination condition. The AC/DC conversion part of the power circuit has the advantages of global input voltage range, AC/DC dual-purpose, low power consumption, high efficiency, high reliability, safety isolation and the like. The two take-out ports provided at the linear opening facilitate the user to insert the liquid container in place and easily find the point of application when taking out the liquid container. The design of the handle can enable a user to selectively hang the machine on the medical support rod or directly place the machine on a plane support, and the use effect is not influenced by the two modes. The handle can make the user more convenient remove and put the heating device, alleviates medical personnel's work burden and also can avoid colliding with in the removal etc. and the machine that leads to damages.

In order to make the heating device easier to use and ensure the safety in the using process, the in-place detection circuit is added, and whether the inserted liquid container is inserted in place or not can be detected, so that the reduction of the effective heating area caused by using errors is avoided, and an operator can be timely prompted if falling off in use, thereby avoiding the occurrence of using faults and heating failure.

Drawings

Fig. 1 is a perspective side view of the present invention;

FIG. 2 is a perspective rear view of the present invention;

FIG. 3 is a front view of the present invention;

fig. 4 is a cross-sectional view of the present invention;

FIG. 5 is an exploded view of the present invention;

FIG. 6 is an enlarged view of structure A of FIG. 5;

FIG. 7 is a cross-sectional view of the heat-conducting plate of the present invention;

fig. 8 is a schematic diagram of the position of the temperature sensor according to the present invention;

Fig. 9 is a schematic diagram of the position of the photoelectric switch of the present invention;

FIG. 10 is a view showing a state of use of the present invention;

fig. 11 is a circuit connection block diagram of the present invention;

Fig. 12 is a schematic circuit diagram of the present invention.

Detailed Description

As shown in fig. 1, 5, 8, a heating device that can monitor that targets in place for infusing or washing, including epitheca 1, inferior valve 2, display screen 3, switch 4, main control board 6 includes microcontroller circuit, power supply circuit, heating circuit, demonstration and alarm circuit, still includes last heating plate P10, lower heating plate P11, heat-conducting plate 5, temperature sensor RT1, photoelectric switch U6, solid-state relay Q5, heat-conducting plate 5 divide into heat-conducting plate 5-1 and lower heat-conducting plate 5-2.

As shown in fig. 3, 6 and 7, the lower surface of the upper heat conducting plate 5-1 is provided with a U-shaped groove, a rectangular groove i 5-1-1 and a rectangular groove ii 5-1-2 are arranged at the opening of the U-shaped groove at intervals, and the rectangular groove i 5-1-1 and the rectangular groove ii 5-1-2 extend inwards from the opening of the U-shaped groove; the lower heat conducting plate 5-2 is a flat plate, the lower heat conducting plate 5-2 and the upper heat conducting plate 5-1 are buckled with each other, the U-shaped groove of the upper heat conducting plate 5-1 and the lower heat conducting plate 5-2 form an inner cavity 5-6 with a linear opening 5-5, and the rectangular groove I5-1-1 and the rectangular groove II 5-1-2 and the lower heat conducting plate 5-2 form a liquid inlet 5-3 and a liquid outlet 5-4 respectively.

As shown in figures 4, 8 and 9, a temperature sensor RT1 is arranged on the upper heat conducting plate 5-1 above the liquid outlet 5-4, a photoelectric switch U6 is arranged at the tail end of the upper heat conducting plate 5-1, the lower heating plate P11 is tightly attached to the lower surface of the lower heat conducting plate 5-2, and the upper heating plate P10 is tightly attached to the upper surface of the upper heat conducting plate 5-1.

As shown in fig. 8, the combination of the upper heater chip P10, the heat conductive plate 5 and the lower heater chip P11 is fixed in the lower case 2, the display screen 3 is embedded on the slope of the front end of the upper case 1, and the main control board 6 and the solid state relay Q5 are embedded on the top of the upper case 1.

As shown in fig. 1 and 2, the power switch 4 is located at the rear end of the upper shell 1, and the upper shell 1 and the lower shell 2 are buckled together. The display screen 3 uses a 2.7-inch OLED screen, the visual angle is larger than 160 degrees, and the upper heat-conducting plate 5-1 and the lower heat-conducting plate 5-2 are made of high-strength aluminum alloy materials. One side of the upper shell 1 is also provided with a fixed handle 7, and the fixed handle 7 is a hoop. A handle 8 is also arranged on the upper surface of the upper shell 1.

As shown in FIGS. 3, 6 and 7, two outlet grooves I5-1-3 are provided on the upper heat-conducting plate 5-1 at the inner sides of the rectangular groove I5-1-1 and the rectangular groove II 5-1-2, two outlet grooves II 5-2-1 are provided on the lower heat-conducting plate 5-2 at positions corresponding to the outlet grooves I5-1-3, the outlet grooves I5-1-3 and the outlet grooves II 5-2-1 form two outlets 5-7, and the outlets 5-7 are provided at the linear openings 5-5.

As shown in fig. 11, main control board 6 still includes temperature measurement circuit backup alarm circuit and the detection circuitry that targets in place, microcontroller circuit respectively with temperature measurement circuit, backup alarm circuit and the detection circuitry that targets in place is connected, temperature measurement circuit, backup alarm circuit respectively with temperature sensor RT1 be connected, backup alarm circuit is connected with heating circuit, heating circuit passes through solid state relay Q5 and is connected with last heating plate P10 and lower heating plate P11 respectively, power supply circuit respectively with show and alarm circuit, heating circuit and microcontroller circuit connection.

As shown in fig. 12, the specific connections of the temperature measuring circuit are as follows: the pin 2, the pin 3, the pin 6 and the pin 7 of the voltage stabilizing circuit U8 are grounded, the pin 1 of the voltage stabilizing circuit U8 is respectively connected with the resistor R24, the temperature sensor RT1, one end of the capacitor C23 and the capacitor C24 and the pin 8 of the voltage stabilizing circuit U8, the other end of the resistor R24 is connected with one end of the capacitor C32 and the 5V power supply, the other end of the capacitor C32 is grounded, the other end of the capacitor C23 is grounded, the other end of the temperature sensor RT1 is respectively connected with the other end of the capacitor C24, one end of the capacitor C30 and one end of the resistor R28, and the resistor R28 is connected with the other end.

as shown in fig. 12, the backup alarm circuit is specifically connected as follows: pins 6, 7 and 12 of a comparator U are grounded, pin 1 of the comparator U is connected with a resistor R, the other end of the resistor R is respectively connected with a 5V power supply, one end of the resistor R and one end of a capacitor C, pin 2 of the comparator U is respectively connected with the other end of the resistor R and pin 2 of a logic gate circuit U, pin 3 of the comparator U is respectively connected with the 5V power supply and one end of the capacitor C, one end of the resistor R and one end of the capacitor C are connected with one end of the resistor R, the other ends of the resistor R, the resistor R and the resistor R are connected with pin 1 of a temperature stabilizing circuit U, the other ends of the capacitor C, the resistor R, the other end of the resistor R and the resistor R are respectively grounded, pin 13 of the comparator U is respectively connected with one end of the resistor R and pin 3 of the logic gate circuit U, pin 14 of the comparator, The other ends of the 8 pins and the 9 pins, the resistor R20 and the resistor R21 are connected with one end of a capacitor C34 and a 5V power supply, the other ends of the capacitor C34 and the capacitor C33 are grounded, the 1 pin of the logic gate U3 is connected with the 1 pin of the logic gate U4, the 4 pin of the logic gate U3 is connected with the 2 pin of the logic gate U4, the 10 pin of the logic gate U3 is connected with the 8 pin and the 9 pin of the logic gate U3, the 7 pin of the logic gate U3 is grounded, the 10 pin of the logic gate U3 is connected with the 9 pin of the logic gate U4, the 11 pin and the 12 pin of the logic gate U3 are connected with the 2 pin of a power switch S2, the 3 pin of the power switch S2 is connected with the 5V power supply, the 1 pin is grounded, the 13 pin of the logic gate U3 is connected with the 4 pin of the logic gate U4, the 14 pin of the logic gate U3 is connected with one end of a capacitor C5 and the 5V power supply, the other end of the, a pin 5 of the logic gate circuit U4 is connected with a pin 30 of the microcontroller circuit singlechip U5, a pin 6 of the logic gate circuit U4 is connected with a pin 10 of the logic gate circuit U4, a pin 7 of the logic gate circuit U4 is grounded, pins 8, 12 and 13 of the logic gate circuit U4 are respectively connected with a pin 1 of the heating circuit power switch chip Q4, a pin 14 of the logic gate circuit U4 is respectively connected with a 5V power supply and one end of a capacitor C6, and the other end of the capacitor C6 is grounded.

As shown in fig. 12, the specific connections of the in-place detection circuit are: the 3 pins of the comparator U7D are respectively connected with one end of a current-limiting resistor R16, one end of a resistor R17, one fixed end of an adjustable resistor R33 and a voltage of 5V, the positive input end of the comparator U7D is connected with the collector of the receiving end of the photoelectric switch U6 and the other end of the resistor R17, the negative input end of the comparator U7D is connected with the adjustable end of the adjustable resistor R33, the 12 pin of the comparator U7D, the other fixed end of the adjustable resistor R33, the emitter of the receiving end of the photoelectric switch U6 and the cathode of the emitter of the photoelectric switch U6 are grounded, the anode of the emitter of the photoelectric switch U6 is connected with the other end of the current-limiting resistor R16, and the output end of the comparator U7D is connected with the 15 pin of the.

as shown in fig. 10-12, the use of a place-monitorable warming device for infusion or irrigation is: before use, an operator inserts the liquid container 9 into an inner cavity 5-6 formed by the upper heat conducting plate 5-1 and the lower heat conducting plate 5-2 through the linear opening 5-5, when the liquid container 9 is inserted into the bottom of the inner cavity 5-6, the tail end of the liquid container 9 just shields the photoelectric switch U6, light reflected to the receiving end of the photoelectric switch U6 is intensified to cause the change of output voltage, the level of the output end of the comparator U7D is changed by comparing the reference voltage with the reference voltage through the comparator U7D, the microcontroller circuit detects the level change and can know the information of the position of the liquid container 9, the microcontroller circuit controls the display and alarm circuit BUZ1 to sound through the output pin, and controls the display screen 3 to display the position icon at the same time, then, the inlet 9-1 of the liquid container is confirmed to be placed in the liquid inlet 5-3, the outlet 9-2 of the liquid container is arranged in the liquid outlet 5-4, when in use, the power switch 4 is turned on, the heating device is started, the microcontroller on the main control board 6 measures the temperature through the temperature sensor RT1 in the temperature measuring circuit, the microcontroller controls the heating circuit, when the temperature is lower than the target temperature, the microcontroller transmits a signal to the heating circuit, the solid relay Q5 of the heating circuit is closed, the heating sheet starts to work, the microcontroller calculates the power required to be heated through a PID algorithm, the power is converted into the duty ratio of the upper heating sheet P10 and the lower heating sheet P11 for heating, the duty ratio is output to the solid relay Q5 through the PWM module of the microcontroller, the upper heating sheet P10 and the lower heating sheet P11 are switched on, the upper heating sheet P10 and the lower heating sheet P11 heat the heat conducting plate 5, and the heat conducting plate 5 heats the liquid container 9; when the temperature approaches to the target temperature, the heating power is lower and lower, after the temperature reaches the target temperature, the liquid container 9 is kept at the target temperature until the infusion or flushing process is finished, after the use, an operator takes out the liquid container 9, the photoelectric switch U6 is not blocked by the tail end of the liquid container 9 any more, the light reflected to the receiving end of the photoelectric switch U6 is weakened, the output voltage returns to the value when the liquid container 9 is not inserted, the output level of the comparator U7D is changed, the information of the moved-out liquid container 9 is transmitted to the microcontroller circuit, the microcontroller controls the buzzer BUZ1 of the display and alarm circuit to sound two sounds through the output pin through the circuit, the display screen 3 is controlled to display the dislocation icon at the same time, and the power supply of the heating device can be disconnected at the moment.

Abnormal alarming and protecting mechanism in the using process: if the liquid container 9 falls off carelessly, the buzzer BUZ1 can be excited to sound two sounds and the display screen 3 displays the dislocation icon; if the temperature is lower than the low-temperature alarm point or higher than the first high-temperature alarm point, the microcontroller controls the backup alarm circuit to give an alarm and displays related alarm information on the display screen 3; if the temperature is higher than the second high-temperature alarm point, the microcontroller directly controls the reed relay REL1 to perform power-off treatment on the solid-state relay Q5, the upper heating plate P10 and the lower heating plate P11; if the microcontroller can not normally control the power failure, the backup alarm circuit can also realize the functions of power failure and alarm, and the safety of the heating device in use is ensured.

Before use, the heating device can be fixed on the medical bracket rod through the fixing handle 7.

Claims

1. A heating device that can monitor that targets in place for infusing or washing, including epitheca (1), inferior valve (2), display screen (3), switch (4), main control board (6) include microcontroller circuit, power supply circuit, heating circuit, demonstration and warning circuit, its characterized in that: the heat conduction plate is characterized by further comprising an upper heating plate P10, a lower heating plate P11, a heat conduction plate (5), a temperature sensor RT1, a photoelectric switch U6 and a solid-state relay Q5, wherein the heat conduction plate (5) is divided into an upper heat conduction plate (5-1) and a lower heat conduction plate (5-2), a U-shaped groove is formed in the lower surface of the upper heat conduction plate (5-1), rectangular grooves I (5-1-1) and rectangular grooves II (5-1-2) are arranged at the opening of the U-shaped groove at intervals, and the rectangular grooves I (5-1-1) and the rectangular grooves II (5-1-2) extend inwards from the opening of the U-shaped groove; the lower heat conducting plate (5-2) is a flat plate, the lower heat conducting plate (5-2) and the upper heat conducting plate (5-1) are buckled with each other, an inner cavity (5-6) with a linear opening (5-5) is formed by the U-shaped groove of the upper heat conducting plate (5-1) and the lower heat conducting plate (5-2), a liquid inlet (5-3) and a liquid outlet (5-4) are respectively formed by the rectangular groove I (5-1-1) and the rectangular groove II (5-1-2) and the lower heat conducting plate (5-2), a temperature sensor RT1 is arranged on the upper heat conducting plate (5-1) above the liquid outlet (5-4), a photoelectric switch U6 is arranged at the tail end of the upper heat conducting plate (5-1), the lower heating plate P11 is tightly attached to the lower surface of the lower heat conducting plate (5-2), and the upper heating plate P10 is tightly attached to the upper, the combined body of the upper heating plate P10, the heat conducting plate (5) and the lower heating plate P11 is fixed in the lower shell (2), the display screen (3) is embedded on the inclined plane at the front end of the upper shell (1), the main control board (6) and the solid relay Q5 are embedded in the top of the upper shell (1), the power switch (4) is located at the rear end of the upper shell (1), and the upper shell (1) and the lower shell (2) are buckled together; the main control board (6) still includes temperature measurement circuit, reserve alarm circuit and the detection circuitry that targets in place, microcontroller circuit respectively with temperature measurement circuit, reserve alarm circuit and the detection circuitry that targets in place is connected, temperature measurement circuit, reserve alarm circuit are connected with temperature sensor RT1 respectively, reserve alarm circuit is connected with heating circuit, heating circuit passes through solid state relay Q5 and is connected with last heating plate P10 and lower heating plate P11 respectively, power supply circuit respectively with show and alarm circuit, heating circuit and microcontroller circuit connection.

2. A site monitorable warming device for infusion or irrigation according to claim 1 and wherein: the temperature measuring circuit is specifically connected as follows: the pin 2, the pin 3, the pin 6 and the pin 7 of the voltage stabilizing circuit U8 are grounded, the pin 1 of the voltage stabilizing circuit U8 is respectively connected with the resistor R24, the temperature sensor RT1, one end of the capacitor C23 and the capacitor C24 and the pin 8 of the voltage stabilizing circuit U8, the other end of the resistor R24 is connected with one end of the capacitor C32 and the 5V power supply, the other end of the capacitor C32 is grounded, the other end of the capacitor C23 is grounded, the other end of the temperature sensor RT1 is respectively connected with the other end of the capacitor C24, one end of the capacitor C30 and one end of the resistor R28, and the resistor R28 is connected with the other end; the backup alarm circuit is specifically connected as follows: pins 6, 7 and 12 of a comparator U are grounded, pin 1 of the comparator U is connected with a resistor R, the other end of the resistor R is respectively connected with a 5V power supply, one end of the resistor R and one end of a capacitor C, pin 2 of the comparator U is respectively connected with the other end of the resistor R and pin 2 of a logic gate circuit U, pin 3 of the comparator U is respectively connected with the 5V power supply and one end of the capacitor C, one end of the resistor R and one end of the capacitor C are connected with one end of the resistor R, the other ends of the resistor R, the resistor R and the resistor R are connected with pin 1 of a temperature stabilizing circuit U, the other ends of the capacitor C, the resistor R, the other end of the resistor R and the resistor R are respectively grounded, pin 13 of the comparator U is respectively connected with one end of the resistor R and pin 3 of the logic gate circuit U, pin 14 of the comparator, The other ends of the 8 pins and the 9 pins, the resistor R20 and the resistor R21 are connected with one end of a capacitor C34 and a 5V power supply, the other ends of the capacitor C34 and the capacitor C33 are grounded, the 1 pin of the logic gate U3 is connected with the 1 pin of the logic gate U4, the 4 pin of the logic gate U3 is connected with the 2 pin of the logic gate U4, the 10 pin of the logic gate U3 is connected with the 8 pin and the 9 pin of the logic gate U3, the 7 pin of the logic gate U3 is grounded, the 10 pin of the logic gate U3 is connected with the 9 pin of the logic gate U4, the 11 pin and the 12 pin of the logic gate U3 are connected with the 2 pin of a power switch S2, the 3 pin of the power switch S2 is connected with the 5V power supply, the 1 pin is grounded, the 13 pin of the logic gate U3 is connected with the 4 pin of the logic gate U4, the 14 pin of the logic gate U3 is connected with one end of a capacitor C5 and the 5V power supply, the other end of the, a pin 5 of the logic gate circuit U4 is connected with a pin 30 of the microcontroller circuit singlechip U5, a pin 6 of the logic gate circuit U4 is connected with a pin 10 of the logic gate circuit U4, a pin 7 of the logic gate circuit U4 is grounded, pins 8, 12 and 13 of the logic gate circuit U4 are respectively connected with a pin 1 of the heating circuit power switch chip Q4, a pin 14 of the logic gate circuit U4 is respectively connected with a 5V power supply and one end of a capacitor C6, and the other end of the capacitor C6 is grounded; the in-place detection circuit is specifically connected as follows: a pin 3 of the comparator U7D is respectively connected with one end of a current-limiting resistor R16, one end of a resistor R17, one fixed end of an adjustable resistor R33 and 5V voltage, a positive input end of the comparator U7D is connected with a collector of a receiving end of the photoelectric switch U6 and the other end of a resistor R17, a negative input end of the comparator U7D is connected with an adjustable end of the adjustable resistor R33, a pin 12 of the comparator U7D, the other fixed end of the adjustable resistor R33, an emitter of a receiving end of the photoelectric switch U6 and a cathode of an emitter of the photoelectric switch U6 are grounded, a positive electrode of the emitter of the photoelectric switch U6 is connected with the other end of the current-limiting resistor R16, and an output end of the comparator U7D is connected with a pin 15 of the microcontroller;

3. A site monitorable warming device for infusion or irrigation according to claim 1 and wherein: the display screen (3) uses a 2.7-inch OLED screen, and the visual angle is larger than 160 degrees.

4. A site monitorable warming device for infusion or irrigation according to claim 1 and wherein: the upper heat conducting plate (5-1) and the lower heat conducting plate (5-2) are made of high-strength aluminum alloy materials.

5. A site monitorable warming device for infusion or irrigation according to claim 1 and wherein: one side of the upper shell (1) is also provided with a fixed handle (7), and the fixed handle (7) is a hoop.

6. A site monitorable warming device for infusion or irrigation according to claim 1 and wherein: the upper surface of the upper shell (1) is also provided with a handle (8).

7. a site monitorable warming device for infusion or irrigation according to claim 1 and wherein: two take-out grooves I (5-1-3) are formed in the inner sides of the rectangular groove I (5-1-1) and the rectangular groove II (5-1-2) in the upper heat-conducting plate (5-1), two take-out grooves II (5-2-1) are formed in the lower heat-conducting plate (5-2) corresponding to the take-out grooves I (5-1-3), and the take-out grooves I (5-1-3) and the take-out grooves II (5-2-1) form two take-out ports (5-7).