JPS6164260A - Warmer of dripping liquid and transfusion liquid - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) This invention heats a liquid delivery tube used for intravenous drips and blood transfusions, and adds to the intravenous fluid, transfused blood, etc. flowing through the same liquid delivery tube. This invention relates to a warmer for intravenous fluids, transfused blood, etc., for heating and injecting intravenous fluids and transfused blood into a patient's body at an optimal temperature, and more specifically, relates to heating control 2 of a heating means for heating the intravenous fluids and transfused blood. .

(Prior art) In order to meander the intravenous fluid, transfusion blood, etc. flowing through the liquid feeding tube from the top to the bottom, a storage groove is provided to accommodate the liquid feeding tube by moving it back and forth once and a half in the vertical direction. In a heater for intravenous fluids, transfused blood, etc., which heats the intravenous fluid, transfused blood, etc. flowing in the liquid delivery pipe to a predetermined temperature using a heating means, the temperature is detected near the lower exit of the storage groove. Arrange the vessels,
Some of these temperature detectors detect the temperature of intravenous fluids, transfused blood, etc. flowing through the liquid pipe. Based on the detected value of the temperature detector, when the transfused blood or the like reaches a predetermined temperature or higher, the heating means is controlled to stop the heating operation.

In addition, since it is necessary to optimally inject transfused blood, etc. at the optimum temperature, the temperature sensor is installed near the lower outlet of the storage groove provided in the warmer, and the transfused blood, etc. flows as close as possible to the injection position. temperature was detected.

(Problems to be Solved by the Invention) However, in this detection method, the transfused blood, etc. injected into the body is heated to an optimal temperature, but after the transfused blood, etc. is heated by a heating means, Since the temperature is detected only after the blood flows to the temperature detector provided near the lower outlet, the temperature of the transfused blood, etc. cannot be detected while it is being heated by the heating means.

Therefore, if the transfused blood, etc. is abnormally heated and denatured while it is being heated by the heating means, and the transfused blood, etc. that has been denatured drops to the optimum temperature before reaching the lower outlet, the There was a risk that denatured transfused blood, etc. would be injected into the body as is.

Furthermore, even if the temperature detector detects an abnormally high temperature in the intravenous fluid, transfused blood, etc. and stops the heating means based on this detection result, the temperature sensor detects the abnormally high temperature of the intravenous fluid, transfused blood, etc., and stops the heating means based on this detection result. There was a problem that blood etc. had already been injected into the patient's body.

Structure of the Invention (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a liquid delivery method for guiding the intravenous fluid, transfusion blood, etc. flowing in the liquid delivery pipe from the top to the bottom in a meandering manner. A heating means is provided with a storage groove for accommodating the tube by making one and a half reciprocations in the vertical direction, and heats to a predetermined temperature the intravenous fluid, transfusion blood, etc. flowing in the liquid feeding tube in a meandering manner at the meandering position. In a warmer for intravenous fluids, transfused blood, etc., which is provided with a heater for intravenous fluids, transfused blood, etc., which is disposed above the meandering portion of the storage groove and detects the temperature of the intravenous fluid, transfused blood, etc. that is heated by the heating means. a temperature detector disposed near a lower outlet of the housing groove, and the heating means;

a second temperature detector that detects the temperature of the intravenous fluid, transfusion blood, etc. flowing through the fluid delivery pipe that is heated and sent out;
a first heating that adjusts the heating of the heating means when the intravenous fluid, transfusion blood, etc. being heated by the heating means reaches a preset first reference temperature based on the detected value of the temperature detector; A second reference temperature is set in advance for the intravenous fluid, transfusion blood, etc. heated by the heating means flowing near the lower exit of the storage groove based on the detection value of the adjustment means and the second temperature detector. The gist of the invention is a warmer for intravenous fluids, blood transfusions, etc., which comprises a second heating adjustment means that adjusts the heating of the heating means when the heating temperature reaches the temperature.

(Function) In order to meander and guide the intravenous fluid, transfusion blood, etc. flowing in the liquid feeding tube from the top to the bottom, a storage groove is provided to accommodate the liquid feeding tube by moving it back and forth once and a half in the vertical direction, and the meandering position is In a warmer for intravenous fluids, transfused blood, etc., which is provided with a heating means for heating the intravenous fluid, transfused blood, etc. that flows in the liquid feeding pipe in a meandering manner to a predetermined temperature, the meandering portion of the storage groove is A first temperature detector is disposed at the upper position to detect the temperature of the intravenous fluid, transfused blood, etc. heated by the heating means. Further, a second temperature detector is disposed near the lower outlet of the storage groove to detect the temperature of the heated intravenous fluid, blood transfusion, etc. that is sent out.

Then, the first heating adjustment means determines whether or not the heated intravenous fluid, transfusion blood, etc. has reached a preset first reference temperature based on the detected value of the first temperature detector. , when the first reference temperature is reached, the heating means is heated to be adjusted to lower the heating temperature, and the second heating adjustment means is heated to the second temperature.
Based on the detected value of the temperature detector of When this temperature is reached, the heating means is adjusted to lower the heating temperature.

(Embodiment) An embodiment embodying the present invention will be described below with reference to the drawings.

In FIG. 1, the case body 1 is divided into two compartments: a heater housing chamber 2 with a front opening and a circuit cord housing chamber 3 with a rear opening, and the front side thereof is integrally formed with the case body 1. The lid body 4 is connected so that it can be opened and closed, and a locking protrusion 5 is provided on the other side so that it can be engaged with a key part 6 formed on one side of the lid body 4. . An indicator light chamber 7 is formed in a part of the upper surface of the circuit element housing chamber 3 of the case body 1 so as to protrude from the front surface of the case body 1. A hanging part 8 protruding from the upper part of the case body 1 is hung with a hanging band 9, so that the case body 1 can be suspended at any location.

A heater 11 as a heating means is fixed to the heater housing chamber 2 of the case body 1 as shown in FIG. The rubber heater 13 is made up of a rubber heater 13.

A heat sensing element 14 is attached to the back surface of the rubber heater 13, and in this embodiment, it detects whether the heating temperature of the rubber heater 13 has reached 63 degrees or higher.

The surface of the case body 1 in which the heater 11 is arranged has a horizontal S
A housing groove 15 having a U-shaped cross section is formed. The grooves 15c are formed on the side surface, and the grooves 15a to 15c are made to communicate with each other, and the liquid feeding pipe P is meandered back and forth once and a half in the vertical direction to be brought together. Therefore, the intravenous fluid, transfusion blood, etc. flowing in the liquid feeding pipe P is fed from above and meandered back and forth once and a half in the vertical direction, and then heated by the heater 11 to the groove 15c at the lower outlet.
It will be sent downward through.

Of the grooves 15a formed on the upper surface of the case body, the groove 15a is the part where the liquid feeding pipe P is bent and fitted in an inverted U shape.
A first thermistor 16 is disposed as a first temperature detector, and is adapted to detect the temperature of the intravenous fluid, transfused blood, etc. flowing in the liquid feeding pipe P heated by the heater 11. There is.

A groove 15c formed on the lower surface of the case body 1 has a second
A second thermistor 17 as a temperature detector is disposed to detect the temperature of the intravenous fluid, blood transfusion, etc. flowing in the e-tube P heated by the heater 11.

As shown in FIG. 3, a recess 18 is provided in a portion of the surface of the heater 11 surrounded by the groove 15b, and the recess 18 is filled with silicone rubber 19. Further, a heat insulating material 20 is provided in the heater housing chamber 2.

A group of electrical circuit elements 21 wired on a printed circuit board are housed in the circuit element housing chamber 3, and are housed and supported by fixing the bottom cover 22 with screws. Lamp PL 1 and abnormality indicator lamp PL that lights up in red
2 are arranged. The power cord 23 is wired to the printed circuit board via a bushing 24 fitted into the lower side wall of the case body 1.

The fitting holes 25 formed through the lid body 4 are fitted and exposed when the indicator light chamber 7 is closed, so that the light from the lamps P, L1, and PL2 can be transmitted from the outside. I am trying to do Rm. A press plate 27 made of aluminum fixed to the inside of the lid 4 via a heat insulating material 26 prevents the liquid feeding pipe P accommodated in the accommodation groove 15 from coming off from the same 1M15, and ! #1
The outer circumferential surface of the liquid feeding pipe P is brought into close contact with the inner circumferential surface of the tube P.

Next, the electric circuit of the warmer configured as described above will be explained.

In FIG. 5, electronic control circuits 28 as first and second heating adjustment means are connected to central processing bags M (cPU), S!
It is composed of a read-only memory (ROM) in which 70 seconds of data are stored, a read-out and replaceable memory (RAM) in which various data are stored, and the heat sensing element 14, the first and output signals from second thermistors 16 and 17 are input.

The electronic control circuit 28 operates according to a predetermined control program, and the heat sensing element 1 is activated based on the heating temperature of the rubber heater 13 being 63 degrees or higher.
In response to the change in the output signal of No. 4, a control signal is output to the heater drive circuit 29 to cut off the power to the rubber heater 13 and stop the heating operation, and at the same time, to turn on the abnormality indicator lamp P L 2. It has become.

Further, the electronic control circuit 28 determines the temperature of the intravenous fluid, transfusion blood, etc. heated by the heater 11 based on the output signal from the first thermistor 16. And electronic control circuit 2
8 compares the temperature of the heated intravenous fluid, transfused blood, etc. with a preset first reference temperature (30 degrees in this example),
When the temperature of the intravenous fluid, transfused blood, etc. reaches the first reference temperature,
A control signal is output to the heater drive circuit 29 to cut off the power to the rubber heater 13 and stop the heating operation, and at the same time turn on the abnormality indicator lamp PL2.

Further, the electronic control circuit 28 determines the temperature of the intravenous fluid, transfusion blood, etc. heated by the heater 11 based on the output signal from the second thermistor 17. And electronic control circuit 2
8 compares the temperature of the heated intravenous fluid, transfused blood, etc. with a preset second reference temperature (36 degrees in this example), and indicates that the temperature of the intravenous fluid, transfused blood, etc. has reached the second reference temperature. When this happens, a control signal is output to the heater drive circuit 29, and the rubber heater 1 is
3 and stop the heating operation, and at the same time, an abnormality indicator lamp PL2 is turned on.

Further, the electronic control circuit 28 is configured to turn on the power lamp PL1 when the power is turned on.

In this way, in this embodiment, the rubber heater 13 has 63
When the rubber heater 13 is abnormally heated to a temperature higher than 50°C, the electronic control circuit 28 turns off the power to the rubber heater 13 and turns on the abnormality indicator lamp PL2. Therefore, the possibility that the intravenous fluid, blood transfusion, etc. will be abnormally heated based on the abnormal heating operation of the rubber heater 13 can be prevented. When the temperature of the intravenous fluid, transfused blood, etc. heated by the heater 11 reaches 30 degrees or higher, the electronic control circuit 28 determines that there is a risk that the intravenous fluid, transfused blood, etc. may be denatured, and turns off the power to the rubber heater. At the same time, the abnormality display lamp PL2 is turned on. Therefore, during heating, intravenous fluids, blood transfusions, etc. are heated to extremely high temperatures.
There is no risk of denaturing the transfused blood, etc., and the intravenous fluid, transfused blood, etc. can be safely heated.

When the temperature of the intravenous fluid, transfused blood, etc. that has been heated by the heater 11 reaches 36 degrees or higher, the electronic control circuit 28 determines that the temperature is too high for the intravenous fluid, transfused blood, etc. to be injected into the body, and releases the rubber. When the power to the heater is turned off, the error indicator lamp PL
Turn on 2. Therefore, the intravenous fluid, blood transfusion, etc. are optimally heated and are injected into the patient's body in an optimal state.

Furthermore, in this embodiment, since the first thermistor 16 is disposed in the upper groove 15a, the temperature of the intravenous fluid, transfused blood, etc. heated by the heater 11 can be detected at the point where the temperature rises the most. It is possible to quickly detect temperature rises in intravenous fluids, transfused blood, etc.

Note that in this embodiment, when the intravenous fluid, transfusion blood, etc. is heated to the first or second reference temperature, the power to the rubber heater 13 is turned off. 11 may be implemented to control the operation. Of course, the rubber heater 13 may be heated and controlled so as to restart the heating operation when the intravenous fluid, blood transfusion, etc. drops below the first or second base Q temperature.

Further, the first and second reference temperatures may be changed as appropriate, and the data of the base Q'1 degree may be stored in the read-only memory (ROM) or readable and rewritable memory (R
AM).

Effects of the Invention As described above, the present invention has the excellent effect that intravenous fluids, transfused blood, etc. can be heated to an optimal temperature and injected into a patient's body without denaturing them.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a warmer for intravenous fluids, blood transfusions, etc. embodying the present invention, FIG. 2 is a front view of the warmer, and FIG. 3 is a side sectional view of the warmer. FIG. 4 is a perspective view showing how the warmer is used, and FIG. 5 is an electric block circuit diagram of the warmer.

Claims (1)

[Scope of Claims] In order to meander and guide the intravenous fluid, transfusion blood, etc. flowing in the liquid feeding tube from above to below, a storage groove is provided in which the liquid feeding tube is made to move back and forth once and a half in the vertical direction. In a warmer for intravenous fluids, transfused blood, etc., which is provided with a heating means for heating the intravenous fluid, transfused blood, etc. that flows in the liquid feeding pipe in a meandering position to a predetermined temperature, the meandering of the storage groove a first temperature detector disposed at an upper position of the part and detecting the temperature of the intravenous fluid, transfusion blood, etc. heated by the heating means; disposed near the lower outlet of the storage groove; a second temperature detector that detects the temperature of the intravenous fluid, transfusion blood, etc. that is heated by the heating means and sent out; a first heating adjustment means for heating the heating means when the intravenous fluid, transfusion blood, etc. reaches a preset first reference temperature; and a first heating adjustment means for heating the heating means; A second heating adjustment means adjusts the heating of the heating means when the intravenous fluid, transfusion blood, etc. heated by the heating means flowing near the lower exit of the groove reaches a preset second reference temperature. A warmer for intravenous fluids, blood transfusions, etc., consisting of and.