JP6883794B2 - Warmer using microwave irradiation - Google Patents

Description

The present invention relates to a warmer using microwave irradiation, particularly an infusion warmer using microwave irradiation.

(Conventional infusion warmer)
The infusion solution, drip solution, blood, etc., is preferably close to body temperature when it is put into the body. In particular, in the case of emergency infusion, warming the infusion or blood to a temperature close to that of the body improves the prognosis.
Currently, the only device that heats an infusion solution is a heater that is a simplification of an electric heater. However, such warmers can be used in well-equipped hospital facilities but are inconvenient to transport. It cannot be used in the event of an outdoor disaster. Moreover, such a warmer cannot heat the infusion rapidly.

(Device using microwaves)
Microwaves are the most efficient energy source for heating water, and various applications have even been reported. Currently, a portable microwave oscillator has been developed, which enables microwave oscillation with low power consumption.
The present inventors have developed and reported a portable microwave oscillator (see: Patent Documents 8 and 9).
Tissue suture devices using microwave irradiation (reference: Patent Document 1), organ dissection operating tools (reference: Patent Document 2), surgical instruments (reference: Patent Document 3), and the like have been reported.

(Conventional infusion warmer)
Conventionally known infusion warmers are as follows.

Patent Document 4 discloses "an instantaneous fluid heating device characterized in that a heat exchanger made of a derivative is provided in a fluid passage, and a high frequency induction heating device and a heating coil are arranged around the heat exchanger." However, the instantaneous fluid heating device disclosed in Patent Document 4 has a completely different heating method from the warmer of the present invention.

Patent Document 5 discloses "a structure in which an infusion tube is sandwiched between heaters".
However, the warmer disclosed in Patent Document 5 has a completely different heating method (particularly, microwave irradiation is not used) as compared with the warmer of the present invention.

Patent Document 6 discloses "a device for heating blood or an infusion solution with microwaves".
However, in the device described in Patent Document 6, there is no description of direct heating of the infusion bottle, and the microwave drive circuit unit 27 is not in the heating unit 10.
Therefore, the warmer of the present invention can heat only the liquid inside the infusion tube without heating the infusion tube, so that the heating method is completely different.

Patent Document 7 discloses "a replaceable cartridge in an apparatus for heating blood or infusion with microwaves".
However, the cartridge does not have a description of direct heating of the infusion bottle, and the microwave drive circuit unit is not included in the heating unit cartridge 16.
Therefore, the heating method is completely different from that of the warmer of the present invention.

Non-Patent Document 1 discloses "a structure in which an infusion tube is sandwiched between heaters".
However, the warmer heater disclosed in Non-Patent Document 1 has a completely different heating method as compared with the warmer of the present invention, and also heats the infusion tube and all the liquid inside the tube together, and further. , Not soft.

Based on the above, the above-described warmer does not disclose or suggest the configuration of the heating portion by microwave irradiation of the present invention, and further discloses or suggests a portable warmer using microwave irradiation. Not doing.

International release 2013-089257 International release 2013-172361 International release 2013-0220207 JP-A-59-170641 JP-A-53-42486 U.S. Pat. No. 6,146,359 U.S. Pat. No. 5,919,218 International release 2013-073709 JP-A-2010-266401

http://japanese.alibaba.com/product-gs/infusion-fluid-blood-warmer-heater-458363909.html

To provide a warmer using microwave irradiation that can rapidly heat the infusion solution in the event of a disaster in the field, which could not be achieved by the conventional warmer.

As a result of intensive research to solve the above-mentioned problems, the present inventors have found that a warmer having an infusion warming part including a coaxial cable-like structure can solve the above-mentioned problems. The invention was completed.

That is, the present invention comprises the following.
1. 1. A warmer with an infusion warmer that includes the following coaxial cable-like structure;
(1) Central conductor,
(2) An insulator that covers a part or all of the central conductor, and (3) an outer conductor that covers a part or all of the insulator.
2. The warmer according to item 1 above, wherein the coaxial cable-like structure is covered with a metal mesh.
3. 3. The warmer according to the preceding item 1 or the preceding item 2.
The central conductor and the outer conductor are exposed in the long axis direction and can directly or indirectly contact the infusion tube or the infusion container to irradiate the liquid or the like in the infusion tube or the infusion container with microwaves. A warmer.
4. The warmer according to the preceding item 1 or the preceding item 2.
There are two coaxial cable-like structures,
The central conductor and the outer conductor of both coaxial cable-like structures are exposed in the long axis direction, and the microwave is transmitted by directly or indirectly sandwiching the infusion pipe or the infusion container between the two center conductors and both outer conductors. A warmer capable of irradiating the liquid or the like in the infusion tube or the infusion container.
5. The warmer according to the preceding item 1 or the preceding item 2.
The heating unit has a structure capable of accommodating and contacting an infusion pipe or an infusion container inside.
The central conductor and the outer conductor can directly or indirectly contact the infusion pipe or the infusion container housed in the heating portion to irradiate the liquid or the like in the infusion pipe or the infusion container with microwaves. A warmer that is.
6. The warmer according to item 5 above.
The heating portion is formed with a groove for accommodating the infusion pipe inside.
The central conductor and the outer conductor can directly or indirectly contact the infusion tube housed in the groove of the heating portion to irradiate the infusion tube or the liquid in the infusion container with microwaves. A warmer.
7. The warmer according to item 5 above.
There are two coaxial cable-like structures,
The heating portion is formed with a groove for accommodating the infusion pipe inside.
A warmer capable of irradiating a liquid or the like in the infusion tube with microwaves by directly or indirectly sandwiching the infusion tube housed in the groove of the heating portion between both center conductors and both outer conductors. ..
8. The warmer according to the preceding item 1 or the preceding item 2.
The central conductor has a hollow tube formed by a hollow,
A warmer capable of irradiating a liquid or the like in the infusion tube or the infusion container with microwaves by passing the infusion tube or the infusion container through the hollow tube.
9. The warmer according to item 8 above.
A warmer in which a slit is formed in the central conductor and / or the outer conductor.
10. The warmer according to the preceding item 3 or the preceding item 4.
A warmer in which the cross-sectional areas of the central conductor and the outer conductor at the tip in the major axis direction are smaller than the cross-sectional areas of the center conductor and the outer conductor at the end in the major axis direction, respectively.
11. The warmer according to item 10 above.
The ratio of the diameter of the central conductor at the tip in the major axis direction to the diameter of the central conductor at the end in the major axis direction, the diameter of the outer conductor at the tip in the major axis direction, and the diameter of the outer conductor at the end in the major axis direction. A warmer whose ratio is about the same.
12. The warmer according to item 10 above.
The ratio of the diameter of the central conductor at the tip in the major axis direction to the diameter of the central conductor at the end in the major axis direction, the diameter of the outer conductor at the tip in the major axis direction, and the diameter of the outer conductor at the end in the major axis direction. A warmer in which the center conductor and the outer conductor gradually or gradually decrease toward the tip while maintaining a ratio of about the same.
13. The warmer according to the above items 1 to 12,
In addition, it has a microwave oscillator,
By bringing the microwave oscillator into direct or indirect contact with the infusion tube or the infusion container, both the heating unit and the microwave oscillator heat the liquid or the like in the infusion tube or the infusion container. A warmer that is possible. "

The warmer having the infusion warming part including the coaxial cable-like structure of the present invention has the following effects.
(1) The central conductor and the outer conductor are exposed in the long axis direction, and unlike the conventional microwave irradiation device, the microwave irradiation efficiency is high.
(2) A coaxial cable-like structure (particularly, a flexible cable) is installed according to the shape of the groove of the infusion pipe formed inside the heating portion, and microwaves can efficiently irradiate the infusion pipe.
(3) Since both the heat generated by the microwave oscillator itself and the heating by the microwave irradiation of the heating portion can be supplied to the infusion tube and / or the infusion solution, the heating can be performed quickly.
(4) Due to the coaxial cable-like structure having the same diameter or taper or the coaxial cable-like structure having a half-split tip, unlike the conventional microwave irradiation device, irradiation can be performed along the cable, and the microwave irradiation efficiency is high.
(5) By sandwiching the infusion tube with the two coaxial cable-like structures, the infusion tube can be simultaneously irradiated with microwaves from the two coaxial cable-like structures, and only the liquid in the infusion tube can be heated. Can be heated quickly.

The figure which shows the structure of the coaxial cable-like structure 6 {(a) cross-sectional view, (b) tip vicinity drawing, (c) whole view}. The figure which shows the structure of the coaxial cable-like structure 6 which has a hollow tube {(a) cross-sectional view, (b) the drawing near the tip}. The figure which shows the taper coaxial cable-like structure of a half structure. Explanatory drawing of Embodiment 1 {(a) front view, (b) cross-sectional view}. Explanatory drawing of the second embodiment {(a) front view, (b) structure in which the inside of the infusion heating part 8 is divided into two and opened}. Explanatory drawing of the fourth embodiment {(a) front view, (b) side view, (c) rear view in which the flexible coaxial cable-like structure 6 is in contact with the infusion container 14 in a meandering shape}. Explanatory drawing of Embodiment 4 (schematic diagram which a warmer using microwave irradiation of this invention heats in a water tank 15}.

Hereinafter, the present invention will be described with reference to the drawings, but the present invention is not limited to the warmer using the microwave irradiation described in the drawings.

(Warmer using microwave irradiation of the present invention)
The warmer 1 using the microwave irradiation of the present invention is a warmer having an infusion warming section 8 (infusion line warming section) including at least the following coaxial cable-like structure 6.
(1) Center conductor 2
(2) Insulator 3 that covers a part or all of the central conductor 2
(3) An outer conductor 4 that covers a part or all of the insulator 3
Preferably, it has a microwave oscillator 9 that is not integrated (separately independent) with the infusion heating unit 8.
Further, the coaxial cable-like structure includes not only the coaxial cable structure but also a structure in which some improvements / additions (internal cavity of the central conductor, partial deletion of the outer conductor, etc.) and the like are included.

(Center conductor, outer conductor)
The shapes of the central conductor 2, the insulator 3, and the outer conductor 4 of the warmer 1 using the microwave irradiation of the present invention are not particularly limited, and a cylindrical shape or a square column shape is possible, but the central conductor 2, the insulator, and the insulation The body 3 and the outer conductor 4 form a coaxial coaxial cable-like structure 6 (see: FIG. 1).
The tip of the central conductor 2 (microwave irradiation direction) is directly or indirectly connected to the microwave irradiation portion or the microwave receiver portion. The tip of the central conductor 2 itself can be a microwave irradiation portion or a microwave receiver portion.
The tip of the outer conductor 4 (microwave irradiation direction) is directly or indirectly connected to the microwave receiving portion or the microwave irradiation portion. The tip of the outer conductor 4 itself can be a microwave receiving portion or a microwave irradiation portion.
The microwave irradiation site is an electrode for supplying the microwave to the irradiation target, and the microwave receiving site is a GND electrode for returning the microwave. By supplying microwaves from the end of the central conductor 2 (opposite the direction of microwave irradiation) or the end of the outer conductor 4 (opposite the direction of microwave irradiation), the tip of the center conductor 2 or the outer conductor 4 can be used. It becomes possible to irradiate microwaves.
In particular, it is preferable that the central conductor 2 and the outer conductor 4 of the warmer 1 of the present invention are exposed in the major axis direction. This exposure in the long axis direction makes it possible to efficiently irradiate microwaves over a narrow and long distance as compared with a conventional microwave irradiation device. The "long-axis direction" means the axial direction (tip direction) of the central conductor and the outer conductor. When exposed in the long axis direction, the exposed central conductor is preferably a microwave irradiation portion, and the outer conductor is a microwave receiver portion.

(Hollow tube)
The central conductor 2 of the warmer 1 using the microwave irradiation of the present invention is characterized in that, depending on the embodiment, a hollow tube 5 having a hollow shape is formed. In the central conductor 2 having the hollow tube 5, the presence of the hollow tube 5 does not substantially affect the microwave irradiation efficiency.
Further, as the material of the central conductor 2 of the present invention, copper, bronze, aluminum and the like are exemplified, and the hollow tube 5 can be formed by a method known per se. For example, it is possible by hollowing out the inside of a cylindrical phosphor bronze.
In addition, the central conductor 2 having the hollow tube 5 can be formed by winding a phosphor bronze wire or the like around a pipe or the like made of a stainless steel material having a cylindrical shape or the like. Further, the central conductor 2 having the hollow tube 5 can be formed by plating phosphor bronze on a pipe or the like made of a stainless steel material having a cylindrical shape or the like.
The central conductor 2 having such a hollow tube 5 is characterized in that the diameter can be made very small.
As a feature of the present invention, by passing the infusion tube 13 or the infusion container 14 through the hollow tube 5, the infusion solution can be heated by irradiating the infusion tube 13 or the infusion container 14 with microwaves.
Further, in order to increase the microwave irradiation efficiency in the hollow tube 5, a slit is preferably formed in the central conductor 2 and / or the outer conductor 4.

(Coaxial cable-like structure)
By making the coaxial cable-like structure 6 {reference: FIG. 1 (c)} used in the present invention flexible, a part or all of the groove 12 for accommodating the infusion pipe 13 inside the infusion heating unit 8 described below. Can be covered. That is, a coaxial cable-like structure (particularly, a flexible coaxial cable) is installed according to the shape of the groove of the infusion pipe 13 formed inside the infusion heating portion 8, and microwaves can efficiently irradiate the infusion pipe 13. ..
Further, the coaxial cable-like structure 6 used in the present invention includes, for example, a central conductor 2 of a conductor made of phosphor bronze and an insulator 3 covering the central conductor 2 (for example, made of Teflon ^{(registered trademark)} , ceramic, etc.). Shield tube and ground pipe of outer conductor 4 (conductor) made of brass sugar. The outside of the coaxial cable-like structure 6 may be covered with a shield holder (also referred to as a guide tube). The shield holder is preferably made of a non-conductive member {for example, a non-magnetic coil such as ^{Teflon (registered trademark), fluororesin, or ceramic}.}

(Shape of coaxial cable-like structure)
The shape of the coaxial cable-like structure 6 is such that the ratio of the diameter (preferably the diameter) of the central conductor 2 to the diameter (preferably the inner diameter) of the outer conductor 4 is kept constant, and the diameter (diameter) of the center conductor 2 and the outer conductor are kept constant. It is preferable to have a coaxial cable-like structure (hereinafter, may be referred to as a tapered coaxial cable-like structure) that is tapered by gradually or gradually reducing the diameter (inner diameter) of 4 (see: FIG. 3).
That is, the ratio of the diameter of the tip of the center conductor 2 to the diameter of the end of the center conductor 2 and the ratio of the inner diameter of the tip of the outer conductor 4 to the inner diameter of the end of the outer conductor 4 maintain approximately the same ratio. It is preferable that the central conductor 2 and the outer conductor 4 are gradually or gradually reduced toward the tip.
Such a tapered coaxial cable-like structure (see: FIG. 3) has very high microwave irradiation efficiency.
That is, the coaxial cable near the tip of the central conductor 2 and the tip of the outer conductor 4 can be divided in about half (half-divided structure) (see FIG. 3). If there are two coaxial cable-like structures having this half-split structure, microwaves can be transmitted to the infusion tube or the infusion container by directly or indirectly sandwiching the infusion tube or the infusion container between the respective central conductors and outer conductors. It can be irradiated efficiently.
Further, a coaxial cable (having the same diameter) in which the diameter of the tip of the center conductor 2 and the diameter of the end of the center conductor 2 are substantially the same, and the inner diameter of the tip of the outer conductor 4 and the inner diameter of the end of the outer conductor 4 are substantially the same. Coaxial cable) can also be used.

(Irradiated microwave)
The irradiation microwave of the warmer 1 using the microwave irradiation of the present invention is not particularly limited, but is 300 MHz to 30 GHz, preferably 0.8 GHz to 3 GHz. The microwave irradiation method of the warmer 1 using the microwave irradiation of the present invention is not particularly limited, but the coaxial cable-like structure 6 is known directly or indirectly (via another coaxial cable). This can be easily achieved by connecting to a microwave oscillator 9 that oscillates the microwave of the above, or by incorporating the microwave oscillator 9 in a warmer 1 that uses microwave irradiation.

(Microwave oscillator)
The microwave oscillator 9 used in the present invention has a structure known per se, enables treatment with a small amount of electric power, is preferably portable, is independent of the infusion heating unit 8, and can be a storage battery. It is desirable to be able to handle it.
The electric power used in the present invention is 0.1 W to 100 W, preferably 0.5 W to 60 W. More preferably, it is 1 W to 40 W.
Further, as a feature of the present invention, by bringing the microwave oscillator 9 into contact with the infusion pipe 13 or the infusion container 14, the heat generated by the oscillator can be utilized for heating. That is, unlike the conventional warmer, the warmer 1 using the microwave irradiation of the present invention uses the heat generated by the unused microwave oscillator 9 to heat the infusion solution, thereby rapidly infusing the infusion solution. Not only temperature but also power saving can be achieved. Therefore, the microwave oscillator 9 is also an infusion bottle heating unit.
Further, the warmer 1 using the microwave irradiation of the present invention can be used in the event of an accident or disaster in the field without a power source when the microwave oscillator 9 capable of oscillating microwaves with a storage battery is used. ..
In addition, the microwave oscillator 9 may have a structure capable of sandwiching the infusion tube 13 (see: FIG. 4).

(Infusion tube or infusion container)
The infusion tube 13 in the present invention means a tube through which an infusion solution (for example, drip, blood, etc.) to be put into the body is passed through the body, but is not particularly limited.
Further, the infusion container 14 in the present invention means a container for storing the infusion solution to be put into the body, but is not particularly limited.

(Infusion tube or infusion container contact surface)
The contact surface of the infusion tube or the infusion container in the present invention is formed by irradiating the infusion tube 13 or the infusion container 14 with a microwave from the central conductor 2 to the outer conductor 4 (or irradiating the center conductor 2 with a microwave from the outer conductor 4). The infusion solution inside can be heated. In the contact surface, the central conductor 2 and / or the outer conductor 4 may be in direct contact with the infusion pipe 13 and the infusion container 14, but the outside of the center conductor 2 and / or the outer conductor 4 is made of a metal mesh known per se. You may cover it.

(Infusion heating part)
The infusion heating unit 8 of the present invention includes at least a coaxial cable-like structure 6, and preferably has a structure (case) capable of accommodating all or a part of the infusion pipe 13 or the infusion container 14 inside. For example, in order to store the infusion pipe 13 or the infusion container 14, a structure in which the inside of the infusion heating unit 8 can be opened and divided into two is preferable {see: FIG. 5 (b)}.
Further, in order to pass the infusion pipe 13 through the inside of the infusion heating unit 8, an infusion insertion port and an infusion discharge port are provided on either the top, bottom, left or right of the infusion heating unit 8.
Further, the infusion heating unit 8 of the present invention preferably has a groove 12 for accommodating the infusion pipe, and the coaxial cable-like structure 6 is housed in the groove 12 for accommodating the infusion pipe. 13 is installed so as to cover a part or all of it.
In addition, the infusion heating unit 8 of the present invention can constantly monitor that the heating temperature is maintained at 35 ° C. ± 3 ° C. by installing a thermometer.
Further, the material of the infusion heating part 8 of the present invention is not particularly limited, but it is preferably made of resin, and further, in order to prevent the diffusion of microwaves to the outside, a metal mesh for electromagnetic blocking is used inside to form a coaxial cable. It is preferable to surround the outside of 6.

(Application of a warmer using microwave irradiation of the present invention)
The warmer 1 using the microwave irradiation of the present invention is different from the conventional warmer, particularly the medical warmer, and can be easily used in the following cases.
(1) Outdoor use where there is no power supply (2) Use when the patient moves or walks while dripping (3) Easy to transport because the warmer is light, and outdoor use (4) Micro Since it can be heated by both the wave oscillator and the warmer at the same time, it can be used in an emergency when rapid heating is required. (5) Water heating in the water tank (heating and boiling of bottles and appliances soaked in the water tank) Use in disinfection) (6) Because the volume of the warmer is small, it is used in narrow places (especially in ambulances) and in hospital rooms.

Hereinafter, the warmer 1 using the microwave irradiation of the present invention will be described in detail with reference to specific examples, but the present invention is not limited to these examples.

(Warmer using microwave irradiation of the present invention)
Hereinafter, Examples 1 to 4 of the warmer 1 using the microwave irradiation of the present invention will be illustrated.

(Example 1)
The first embodiment, which is an example of the warmer 1 using the microwave irradiation of the present invention, will be described with reference to FIG.
As shown in FIG. 4A, the infusion heating unit 8 and the microwave oscillator 9 of the warmer 1 using the microwave irradiation of the present invention have a structure capable of sandwiching the infusion pipe 13. ing. As a result, the heat generated by the microwave oscillator 9 itself can also be used to heat the infusion bottle and the tube 13. Further, as a structure capable of sandwiching the infusion pipe 13, the infusion heating unit 8 and the microwave oscillator 9 may have a cavity inside which the infusion pipe 13 can be penetrated, or a case where the inside can be opened. The structure may be used, and the structure is not particularly limited.
Further, the warmer 1 has a coaxial cable-like structure 6 including a central conductor 2, an insulator 3, and an outer conductor 4 inside.
Then, as shown in FIG. 4B, there are two coaxial cable-like structures 6, and both center conductors 2 and both outer conductors 4 are exposed in the major axis direction (vertical split-like structure). Further, by directly or indirectly sandwiching the infusion tube 13, only the infusion solution inside the tube can be heated by irradiating the infusion tube 13 with microwaves.

(Example 2)
In the second embodiment, which is an example of the warmer 1 using the microwave irradiation of the present invention, the infusion heating unit 8 is a case in which the infusion pipe 13 or the infusion container 14 can be stored inside. Then, the central conductor 2 and the outer conductor 4 come into direct or indirect contact with the infusion tube 13 or the infusion container 14 housed in the infusion heating unit 8 to irradiate the infusion tube 13 or the infusion container 14 with microwaves. Warm the infusion.
More specifically, as shown in FIGS. 5A and 5B, there are two coaxial cable-like structures 6, and the infusion heating unit 8 is formed with a groove 12 for accommodating the infusion pipe. , Both central conductors 2 and both outer conductors 4 are exposed long in the long axis direction, and the infusion pipe 13 housed in the groove 12 for accommodating the infusion pipe of the infusion heating unit 8 is provided along the groove 12. By directly or indirectly sandwiching the infusion solution, the infusion solution can be heated by irradiating the infusion solution tube 13 with a microwave.
Further, the microwave oscillator 9 is formed in a sheet shape, and can be heated by directly or indirectly contacting the infusion container 14.
Since the infusion heating unit 8 and the microwave oscillator 9 are not heavy, they do not need to be fixed to the drip stand as in the conventional case, and can be used as they are attached to the infusion tube 13 (drip line).

(Example 3)
The third embodiment, which is an example of the warmer 1 using the microwave irradiation of the present invention, has a hollow tube 5 (see: FIG. 2) in which the central conductor 2 is formed by a hollow, and the infusion tube 13 or By passing the infusion container 14 through the hollow tube 5, the infusion solution can be heated by irradiating the infusion tube 13 or the infusion container 14 with microwaves.

(Example 4 of embodiment)
Example 4 of the embodiment, which is an example of the warmer 1 using the microwave irradiation of the present invention, will be described with reference to FIG.
If the warmer is waterproofed, the warmer of the present embodiment, which has been waterproofed, is placed in a container filled with water including a drip bottle (infusion container 14), so that not only the drip bottle but also the water is placed. Can also be heated.
Specifically, as shown in FIG. 7, if the drip bottle (infusion container 14) in the water tank is sandwiched between the infusion heating unit 8 and the microwave oscillator 9, the drip bottle (infusion container 14) in the water tank is filled with water. Can be heated from both sides together with.
Further, as shown in FIG. 6C, if the flexible coaxial cable-like structure 6 is placed directly in the drip bottle (infusion container 14) or indirectly in the water tank like a meandering shape, it is efficient. The infusion solution can be heated.

(Example of using a warmer using the microwave irradiation of the present invention)
An example of the energy required for heating when the warmer 1 described in the first embodiment is used is as follows.

(Rapid infusion)
When the maximum volume of infusion is 2 L / hour in an emergency, the liquid at 18 ° C. is heated to 38 ° C.
40,000 calories (x20 degrees) are required per hour, and in a 40 W microwave oscillator, the amount of heat as a microwave is 40 x 3600/4, 2 = 33,000 Cal in one hour. Since the drip needs to be 38 degrees from the first drop, a small amount of heating like a coffee maker is essential. Therefore, the microwave oscillator 9 is attached to a drip bottle or a bag (infusion container 14) to utilize the heat generated during microwave amplification, and the heating by the microwave is performed in the infusion tube 13 flowing inside the infusion heating unit 8. Used for heating the liquid.
The infusion tube 13 has a diameter of 2.6 mm (cross-sectional area of 5.3 mm ² ) and flows 0.56 ml / sec in the route at a liquid volume of 2 L / hour. The length of the route (infusion tube 13) is 10.6 cm.

(Trial calculation 1)
2L / hr In the case of a warmer (40,000 cal) / h that can infuse 18 ° C at 38 ° C Bottle part (infusion container 14) 10 x 15 cm
Tube part (infusion tube 13) diameter 2.6 mm
2000 ml ÷ 3600 sec ≒ 0.56 ml / sec per second (infusion volume / sec)
Tube length / sec πr ² = 3.14 × 1.3 ² mm ≒ 5.31 mm ^{2 (} tube cross-sectional area)
0.56 × 10 ³ mm ³ ÷ 5.31 ^{mm 2} ≒ 105.46 = 105.5 mm
○ 31.2cal / sec is required to heat 0.56ml from 18 ℃ to 38 ℃ at 10.6cm / sec ○ 40w (joule) / sec → 9.5cal / sec 31.2 ÷ 9.5 ≒ 3.3 times
10.6 cm x 3.3 = 34.8 cm
From the above, it is necessary to warm the root length of about 35 cm.

(Trial calculation 2)
The bottle portion (infusion container 14) also dissipates half of the amplified energy of the microwave oscillator 9, and the heated 500 ml bottle (infusion container 14) is infused in 15 minutes.
40W heating temperature in 15 minutes 40W ÷ 4.2 × 15 × 60sec ÷ 500ml = 17 ℃
If the efficiency is 60%, the efficiency rises by 10.3 ° C. To heat the inside of the tube (infusion tube 13) by 10 ° C to 38 ° C
0.56 ml x 10 = 5.6 cal / sec
5.6 ÷ 40W × 4.2 (cal) × 10 ≒ 6.23cm
(0.59 cal / sec)
From the above, the warmer of the present invention can sufficiently cope with a flow of 10 cm per second (flow of 2 L / hour).

The warmer using the microwave irradiation of the present invention succeeds in minimization unlike the conventional warmer, and further, it is possible to heat only the infusion solution easily, in a short time and efficiently. Furthermore, it enables treatment with low power and is highly safe.
Therefore, the warmer using the microwave irradiation of the present invention is suitable for use in an accident or disaster outdoors or outdoors without a power source.

1: Heater using microwave irradiation 2: Central conductor 3: Insulator 4: Outer conductor 5: Hollow tube 6: Coaxial cable-like structure 7: Coaxial cable-like structure with a half-split tip 8: Infusion Heating section 9: Microwave oscillator (warming section of infusion bottle section)
12: Groove for accommodating the infusion pipe 13: Infusion pipe 14: Infusion container 15: Water tank

Claims (5)

A warmer with an infusion warmer that includes the following coaxial cable-like structure;
(1) A central conductor that is a hollow tube,
(2) An insulator that covers a part of the central conductor,
(3) An outer conductor that covers a part of the insulator,
(4) Microwave oscillator,
(5) Slits formed in the central conductor and / or the outer conductor, and
(6) A metal mesh for electromagnetic blocking that covers the coaxial cable-like structure,
Here, the microwave oscillator is directly or jointly connected to the coaxial cable-like structure, the central conductor is an electrode for supplying the microwave to the irradiation target, and the outer conductor is the microwave. It is a GND electrode for the return of
A warmer that irradiates a liquid or the like in the infusion tube or the infusion container with microwaves by inserting the infusion tube or the infusion container into the hollow tube.
The warmer according to claim 1.
By bringing the microwave oscillator into direct or indirect contact with the infusion tube or the infusion container, both the heating unit and the microwave oscillator heat the liquid or the like in the infusion tube or the infusion container. Warmer .
A warmer having an infusion warming part including a coaxial cable-like structure having a structure in which the following two coaxial cables are divided in about half;
(1) A central conductor that is a hollow tube,
(2) An insulator that covers a part of the central conductor,
(3) An outer conductor that covers a part of the insulator, and
(4) Microwave oscillator,
Here, the microwave oscillator is directly or jointly connected to the coaxial cable-like structure, the central conductor is an electrode for supplying the microwave to the irradiation target, and the outer conductor is the microwave. It is a GND electrode for the return of
A warmer that irradiates a liquid or the like in the infusion tube or the infusion container with microwaves by sandwiching the infusion tube or the infusion container with the two coaxial cable-like structures.
The warmer according to claim 3, wherein the coaxial cable-like structure is covered with a metal mesh for electromagnetic blocking.
The warmer according to claim 3 or 4.
By bringing the microwave oscillator into direct or indirect contact with the infusion tube or the infusion container, both the heating unit and the microwave oscillator heat the liquid or the like in the infusion tube or the infusion container. Warmer .

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