JP5877721B2 - Operating room air conditioning system - Google Patents

Description

  The present invention relates to an operating room air conditioning system. More specifically, the present invention relates to an operating room air conditioning system for air conditioning an operating room.

Conventionally, in the operating room, the following operating room air conditioning system has been proposed in order to reduce the thermal sensation of the operator while preventing the patient's body temperature from decreasing. That is, an air outlet is provided immediately above the operating table, and air having a room temperature and an isothermal temperature (24 ° C.) is blown out from the air outlet toward the operating table. Further, air having a temperature lower than room temperature (18.6 ° C.) is blown out from the air outlet around the air outlet toward the operating table (see Non-Patent Document 1).
As a result, the patient on the operating table is supplied with air having the same temperature as that of the room temperature, so that the patient's body temperature can be prevented from decreasing. In addition, since the air around the operating table is supplied with low-temperature air, the heat feeling of the operator can be reduced.

"Study on operating room air-conditioning system for infection prevention and thermal environment improvement (1st report) Comparison of air-conditioning blow-out system by CFD", Air Conditioning and Sanitary Engineering Conference Annual Conference, September 14, 2011- 16th, Nagoya, P481

  By the way, laparoscopic surgery is known in which surgery is performed by inserting a laparoscope into the abdominal cavity of a patient. When the operating room air conditioning system described above is applied to this laparoscopic surgery, when the laparoscope is inserted into the abdominal cavity, the lens of the laparoscope is condensed and clouded, and the lens surface is wiped off or a heater is applied to the lens. There was a problem that it took a lot of time to perform the operation.

  An object of the present invention is to provide an operating room air conditioning system capable of preventing condensation of a laparoscopic lens during laparoscopic surgery.

The operating room air conditioning system according to claim 1 is an operating room air conditioning system that air-conditions an operating room,
A first air outlet provided directly above the operating table;
A second air outlet provided around the first air outlet,
The first air outlet blows air of 26 ° C. or higher higher than room temperature toward the operating table,
The second air outlet, the cold air than room temperature, blown towards the periphery of the operating table,
The second air outlet blows air directly downward, and the wind speed of the air blown out from the inner portion of the second air outlet is:
It is characterized by being lower than the wind speed of the air blown out from the outer portion .

According to the present invention, since air having a temperature higher than room temperature is blown out from the first air outlet toward the operating table, it is possible to suppress a decrease in the body temperature of the patient on the operating table and realize a minimally invasive treatment.
In addition, since air having a temperature lower than room temperature is blown out from the second air outlet toward the periphery of the operating table, the operator's working environment can be improved and stress can be reduced.
Here, since the temperature of the air blown out from the first air outlet is higher than room temperature, even when the laparoscope is inserted into the abdominal cavity of the patient during laparoscopic surgery, the lens of the laparoscope is condensed and clouded. Can be prevented.
According to the present invention, the wind speed profile of the air blown from the second blower outlet is inclined, and the wind speed of the air blown from the inner part of the second blower outlet is set to be higher than the wind speed of the air blown from the outer part of the second blower outlet. Also lowered.
Accordingly, since the amount of cool air flowing in the vicinity of warm air is reduced, the contraction phenomenon of warm air can be suppressed, mixing of warm air and cold air can be prevented, and warm air can be more reliably supplied onto the operating table.

The operating room system according to claim 2 is an operating room air conditioning system for air-conditioning an operating room,
A first air outlet provided directly above the operating table;
A second air outlet provided around the first air outlet,
The first air outlet blows air of 26 ° C. or higher higher than room temperature toward the operating table ,
The second air outlet blows air having a temperature lower than room temperature toward the periphery of the operating table,
The first air outlet blows out air from the central portion directly downward, and blows out air from the outer portion toward the lower outer side,
The second air outlet is characterized in that air is blown out directly below .

As a result of intensive studies, the present inventors have found that dew condensation of this lens can be reliably prevented by setting the temperature around the laparoscopic lens to 26 ° C. or higher.
Therefore, according to the present invention, the temperature of the air blown from the first air outlet is set to 26 ° C. or higher, so that even when the laparoscope is inserted into the abdominal cavity of the patient during laparoscopic surgery, the laparoscopic lens is condensed. Can be reliably prevented from becoming cloudy.
According to the present invention, since air is blown out from the outer portion of the first blower outlet toward the lower outer side, a part of the warm air is blown toward the cold air, so that the cold air can be prevented from entering the warm air side. Therefore, warm air is more reliably suppressed by suppressing the contraction phenomenon of warm air.
Can be supplied on the operating table.

Hot air (hereinafter, referred to as a warm-up) than room from the first air outlet blowing, above room temperature from the second outlet cold air (hereinafter, referred to as cold air) blown out. The warm air blown out from the first air outlet is lighter than the cold air blown out from the second air outlet around the warm air, so that the wind speed is reduced and it is difficult to reach the operating table.
Accordingly, the invention further, since the wind velocity of the air blown from the first air outlet is larger than the wind speed of air blown out from the second outlet, the warm air is reliably reach the operating table.

The warm air blown out from the first air outlet is lighter than the cold air blown out from the second air outlet, so that a contraction phenomenon occurs in which the flow of the warm air becomes thin, and the cold air is drawn to the warm air side, so that the warm air and the cold air are mixed. End up. As a result, it becomes difficult for warm air to reach the abdominal cavity of the patient on the operating table.
Therefore, the present invention further isolates the second air outlet from the first air outlet for a predetermined time. By separating the cool air flow from the warm air flow in this way, it is possible to suppress the warm air contraction phenomenon, prevent mixing of warm air and cold air, and more reliably supply warm air on the operating table.

Warm air becomes turbulent, the second air outlet near, balloon cold air becomes a turbulent flow state, the warm air and cold air is likely mixed.
Therefore, since the present invention further provides a rectifying plate between the first air outlet and the second air outlet, the warm air blown out from the first air outlet and the cold air blown out from the second air outlet are layered by this rectifying plate. It approaches the flow state. Accordingly, the contraction phenomenon of warm air can be suppressed, mixing of warm air and cold air can be prevented, and warm air can be more reliably supplied onto the operating table.

This invention further blows air toward the outer side, so the cool air flows in a direction away from the warm air, so that the contraction phenomenon of the warm air is suppressed, the mixing of the warm air and the cool air is prevented, and the warm air is more reliably operated. Can be supplied on the table.

  According to the present invention, since air having a temperature higher than room temperature is blown out from the first air outlet toward the operating table, a decrease in the body temperature of the patient on the operating table can be suppressed, and a minimally invasive treatment can be realized. In addition, since air having a temperature lower than room temperature is blown out from the second air outlet toward the periphery of the operating table, the operator's working environment can be improved and stress can be reduced. Here, since the temperature of the air blown out from the first air outlet is higher than room temperature, even when the laparoscope is inserted into the abdominal cavity of the patient during laparoscopic surgery, the lens of the laparoscope is condensed and clouded. Can be prevented.

It is sectional drawing of the operating room to which the operating room air conditioning system which concerns on 1st Embodiment of this invention was applied. It is a schematic diagram of the operating room air conditioning system according to the embodiment. It is an Example and comparative example of this invention. It is a schematic diagram of the operating room air conditioning system which concerns on 2nd Embodiment of this invention. It is a schematic diagram of the operating room air conditioning system which concerns on 3rd Embodiment of this invention. It is a schematic diagram of the operating room air conditioning system which concerns on 4th Embodiment of this invention. It is a schematic diagram of the operating room air conditioning system which concerns on 5th Embodiment of this invention. It is a schematic diagram of the operating room air conditioning system which concerns on 6th Embodiment of this invention. It is sectional drawing of the operating room which concerns on the modification of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description of the embodiments, the same constituent elements are denoted by the same reference numerals, and the description thereof is omitted or simplified.
[First Embodiment]
FIG. 1 is a sectional view of an operating room 1 to which an operating room air conditioning system 10 according to the first embodiment of the present invention is applied.

The operating room air conditioning system 10 air-conditions the operating room 1 and keeps the operating room 1 at a positive pressure with respect to the surrounding space. The operating room 1 is a space surrounded by a floor surface 2, a ceiling surface 3, and a wall surface 4, and an operating table 5 is provided in the approximate center of the floor surface 2.
A patient A is placed on the back on the operating table 5, and operators B to D are arranged around the operating table 5. In this operating table 5, the surgeons B to D perform an operation in the abdominal cavity of the patient A using a laparoscope.

  The operating room air conditioning system 10 includes a first air conditioning system 20 that blows air from the ceiling surface 3 toward the operating table 5, and two second air conditioning systems 30 that blow air from the ceiling surface 3 toward the periphery of the operating table 5. .

  The first air conditioning system 20 is provided at a substantially center of the ceiling surface 3 and has a first filter box 22 having a first air outlet 21 and a first filter box 22 provided at a position away from the first air outlet 21 on the ceiling surface 3. A suction port 23, a duct 24 extending from the first suction port 23 to the first filter box 22, a circulation fan 25, an electric heater (or hot water coil) 26 provided in the middle of the duct 24, and a variable constant air volume device 27. And comprising.

  An air purification filter 221 is provided on the first air outlet 21 side of the first filter box 22. Moreover, the 1st blower outlet 21 is comprised, for example with the punching metal.

In the first air conditioning system 20, the circulation fan 25 is driven to suck air from the first suction port 23, the temperature of the sucked air is raised by the electric heater 26, and blown out from the first air outlet 21.
At this time, the air volume of the air blown from the first outlet 21 is adjusted by controlling the damper in the variable constant air volume device 27. However, the present invention is not limited thereto, and the air volume of the air blown from the first air outlet 21 may be adjusted by subjecting the circulation fan 25 to inverter control or thyristor control.

  The second air conditioning system 30 includes a second filter box 32 having a second air outlet 31 provided around the first air outlet 21 on the ceiling surface 3, and a second air inlet 33 provided at a lower portion of the wall surface 4. And an air conditioner 34 and a duct 35 extending from the air conditioner 34 to the second filter box 32.

Here, the second air outlet 31 may be disposed so as to surround the entire circumference of the first air outlet 21. That is, the first air outlet 21 may be arranged at the center surrounded by the second air outlet 31.
Alternatively, the second air outlet 31 may be a pair, and the pair of second air outlets 31 may be disposed with the first air outlet 21 interposed therebetween.

An air purification filter 321 is provided on the second air outlet 31 side of the second filter box 32. Moreover, the 2nd blower outlet 31 is comprised, for example with the punching metal.
Of the two air conditioners 34, the air conditioner 34 located on the left side in FIG. 1 includes a blower 341, a cooling coil 342, and a heating coil 343. On the other hand, the air conditioner 34 on the right side in FIG. 1 includes a blower 341 and a cooling coil 342, but does not include a heating coil.

  Not limited to this, a heating coil may be provided in the right air conditioner 34 in FIG. 1, and a heating coil may be provided in both the left and right air conditioners in FIG. Further, the heating coil may be omitted from both the left and right air conditioners in FIG. 1 except for the heating coil from the left air conditioner 34 in FIG.

  In the second air conditioning system 30, the air blower 341 of the air conditioner 34 is driven to suck in air from the second suction port 33, the sucked air is cooled by the cooling coil 342, and after cooling, heated by the heating coil 343 (reheated) ) And blow out from the second outlet 31.

FIG. 2 is a schematic diagram of the operating room air conditioning system 10.
In the above operating room air conditioning system 10, as shown in FIG. 2, air (warm air) is blown out directly from the first air outlet 21 toward the operating table 5. The temperature of the warm air blown out from the first outlet 21 is higher than room temperature and lower than the patient's body temperature, in this case, 26 ° C. or higher.
In addition, cool air is blown out directly from the second outlet 31 toward the periphery of the operating table 5. The temperature of the cold air blown out from the second outlet 31 is lower than room temperature, for example, 16 ° C. or more and less than 26 ° C.
The wind speed of the warm air blown out from the first air outlet 21 is larger than the wind speed of the cold air blown out from the second air outlet 31.

Examples of the present invention and comparative examples will be described below.
FIG. 3A shows an embodiment of the present invention. Specifically, FIG. 3A shows the result of an air conditioning simulation performed with the configuration of the operating room air conditioning system 10 described above, and shows the temperature distribution in the operating room 1.
In FIG. 3A, air of 26 ° C. is blown out from the first air outlet 21 and 18 ° C. is blown out from the second air outlet 31, and it can be seen that the air temperature on the operating table 5 is 26 ° C.

FIG. 3B is a comparative example of the present invention. Specifically, FIG. 3B is a result of performing an air conditioning simulation with the configuration in which the first air outlet 21 is removed from the operating room air conditioning system 10 described above, and shows the temperature distribution in the operating room 1. .
In this FIG.3 (b), 18 degreeC air is blown out from the 2nd blower outlet 31, and it turns out that the temperature on the operating table 5 is 18 degreeC.

According to this embodiment, there are the following effects.
(1) Since warm air having a temperature higher than room temperature is blown out from the first air outlet 21 toward the operating table 5, it is possible to suppress a decrease in the body temperature of the patient on the operating table 5 and realize a minimally invasive treatment.
Further, since cold air having a temperature lower than room temperature is blown out from the second air outlet 31 toward the periphery of the operating table 5, the working environment of the operator can be improved and stress can be reduced.
Here, since the temperature of the warm air blown out from the first air outlet 21 is 26 ° C. or higher, the air temperature on the operating table becomes 26 ° C. or higher, and even when the laparoscope is inserted into the abdominal cavity of the patient during laparoscopic surgery, It is possible to reliably prevent the laparoscopic lens from condensing and clouding.

  (2) Since the wind speed of the warm air blown from the first air outlet 21 is made larger than the wind speed of the cold air blown from the second air outlet 31, the warm air surely reaches the operating table 5.

[Second Embodiment]
FIG. 3 is a schematic diagram of an operating room air conditioning system 10A according to a second embodiment of the present invention.
This embodiment differs from the first embodiment in that the second air outlet 31 is separated from the first air outlet 21 by a predetermined distance.
Specifically, by blocking the portion of the punching metal that constitutes the second air outlet 31 on the first air outlet 21 side so that air does not blow out, the second air outlet 31 is substantially made the first air outlet 31. Keep away from outlet 21.

According to this embodiment, in addition to the effects (1) and (2) described above, the following effects can be obtained.
(3) The second air outlet 31 is arranged separated from the first air outlet 21 by a predetermined distance. By separating the cool air flow from the warm air flow in this way, the contraction phenomenon of the warm air can be suppressed, mixing of warm air and cold air can be prevented, and warm air can be supplied onto the operating table 5 more reliably.

[Third Embodiment]
FIG. 5 is a schematic diagram of an operating room air conditioning system 10B according to a third embodiment of the present invention.
This embodiment is different from the first embodiment in that a rectifying plate 40 extending directly below is provided between the first air outlet 21 and the second air outlet 31.

According to this embodiment, in addition to the effects (1) and (2) described above, the following effects can be obtained.
(4) Since the rectifying plate 40 is provided between the first air outlet 21 and the second air outlet 31, the warm air blown out from the first air outlet 21 by the rectifying plate 40 and the cold air blown out from the second air outlet 31. Approaches a laminar flow state. Therefore, the contraction phenomenon of warm air can be suppressed, mixing of warm air and cold air can be prevented, and warm air can be supplied onto the operating table 5 more reliably.

[Fourth Embodiment]
FIG. 6 is a schematic diagram of an operating room air conditioning system 10C according to the fourth embodiment of the present invention.
In this embodiment, the 2nd blower outlet 31 inclines toward the downward outer side, and the point which blows off cool air toward the downward outer side from this 2nd blower outlet 31 differs from 1st Embodiment.

According to this embodiment, in addition to the effects (1) and (2) described above, the following effects can be obtained.
(5) Since the cold air is blown out from the second outlet 31 toward the lower outer side, the cold air flows in a direction away from the warm air, so that the contraction phenomenon of the warm air is suppressed, the mixing of the warm air and the cold air is prevented, It can be supplied onto the operating table 5 more reliably.

[Fifth Embodiment]
FIG. 7 is a schematic diagram of an operating room air conditioning system 10D according to the fifth embodiment of the present invention.
In the present embodiment, the wind speed profile of the cold air blown out from the second air outlet 31 is inclined, and the average wind speed of the cold air blown out from the inner part of the second air outlet 31 is higher than the average wind speed of the cold air blown out from the outer part. The low point is different from the first embodiment.

Specifically, for example, by reducing the size of the hole of the punching metal constituting the second air outlet 31 from the outside toward the inside, the average wind speed of the cold air blown out from the inner portion of the second air outlet 31 is It is lower than the average wind speed of the cold air blown out from the outer part.
In this embodiment, by changing the size of the hole of the punching metal constituting the second air outlet 31, the wind speed profile of the cold air blown out from the second air outlet 31 is inclined, but not limited thereto, By changing the pressure loss of the air purification filter 321, the wind speed profile of the cold air blown from the second outlet 31 may be inclined.

According to this embodiment, in addition to the effects (1) and (2) described above, the following effects can be obtained.
(6) The wind speed of the cold air blown out from the inner part of the second blower outlet 31 is made lower than the wind speed of the cold air blown out from the outer part of the second blower outlet 31. Therefore, since the amount of cool air flowing in the vicinity of warm air is reduced, the contraction phenomenon of warm air can be suppressed, mixing of warm air and cold air can be prevented, and warm air can be supplied onto the operating table 5 more reliably.

[Sixth Embodiment]
FIG. 8 is a schematic diagram of an operating room air conditioning system 10E according to a sixth embodiment of the present invention.
In the present embodiment, the outer portion of the first air outlet 21 is inclined downward and outward, the warm air is blown out directly from the central portion of the first air outlet 21, and the outer portion of the first air outlet 21. The point which blows out warm air toward the downward outer side from 1st Embodiment differs.

According to this embodiment, in addition to the effects (1) and (2) described above, the following effects can be obtained.
(7) Since the warm air is blown out from the outer part of the first air outlet 21 toward the lower outer side, a part of the warm air is blown toward the cold air, so that the cold air can be prevented from entering the warm air side. Warm air can be more reliably supplied onto the operating table 5 by suppressing the contraction phenomenon.

It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, etc. within a scope that can achieve the object of the present invention are included in the present invention.
In each of the above-described embodiments, the first suction port 23 is provided on the ceiling surface 3. However, the first suction port 23 is not limited to this and may be provided at the lower portion of the wall surface 4.

In each of the above-described embodiments, the variable constant air volume device 27 is provided. However, the variable constant air volume device 27 may not be provided.
In each of the above-described embodiments, the circulation fan 25 and the electric heater 26 are provided in this order from the first suction port 23 side. However, the present invention is not limited to this, and the electric heater 26 and the circulation fan 25 are provided from the first suction port 23 side. The circulation fan 25 and the electric heater 26 may be integrated into an air conditioner, or the functions of the circulation fan 25 and the electric heater 26 may be incorporated in the first filter box 22.

In each of the above-described embodiments, the second filter box 32 and the air conditioner 34 of the second air conditioning system 30 are separated from each other. However, the present invention is not limited to this, and the function of the air conditioner 34 is incorporated in the second filter box 32. But you can.
Further, in each of the above-described embodiments, the air conditioner 34 is incorporated in the lower part of the wall surface 4, but the air conditioner 34 does not necessarily face the inside of the operating room, and the air conditioner 34 may be provided in another room. Good.
A humidifier may be incorporated in the air conditioner 34.

Moreover, in each above-mentioned embodiment, although the two air conditioners 34 were provided, not only this but one air conditioner 34 is very good. That is, as shown in FIG. 9, in the second air conditioning system 30A, the second suction port 33 on the left side in FIG. 9 is connected to the air conditioner 34 on the left side in FIG. The second suction port 33 is connected to the duct 36. Further, the duct 35 extending from the left air conditioner 34 in FIG. 9 branches in the middle and is connected to the second filter box 32 on the right side in FIG.
The number of air conditioners 34 is not particularly limited, and three or more air conditioners 34 may be provided.

DESCRIPTION OF SYMBOLS 1 ... Operating room 2 ... Floor surface 3 ... Ceiling surface 4 ... Wall surface 5 ... Operating table 10, 10A, 10B, 10C, 10D, 10E ... Operating room air conditioning system 20 ... 1st air conditioning system 21 ... 1st outlet 22 ... 1st DESCRIPTION OF SYMBOLS 1 Filter box 23 ... 1st inlet 24 ... Duct 25 ... Circulation fan 26 ... Electric heater 27 ... Variable constant air volume apparatus 30, 30A ... 2nd air conditioning system 31 ... 2nd outlet 32 ... 2nd filter box 33 ... 2nd Suction port 34 ... Air conditioner 35, 36 ... Duct 40 ... Rectifying plate 221,321 ... Air purification filter 341 ... Blower 342 ... Cooling coil 343 ... Heating coil A ... Patients BD ... Operator

Claims (2)

An operating room air conditioning system for air conditioning an operating room,
A first air outlet provided directly above the operating table;
A second air outlet provided around the first air outlet,
The first air outlet blows air of 26 ° C. or higher higher than room temperature toward the operating table,
The second air outlet, the cold air than room temperature, blown towards the periphery of the operating table,
The second air outlet blows out air directly below,
The operating room air conditioning system characterized in that the air speed of the air blown from the inner part of the second air outlet is lower than the air speed of the air blown from the outer part . An operating room air conditioning system for air conditioning an operating room,
A first air outlet provided directly above the operating table;
A second air outlet provided around the first air outlet,
The first air outlet blows air of 26 ° C. or higher higher than room temperature toward the operating table ,
The second air outlet blows air having a temperature lower than room temperature toward the periphery of the operating table,
The first air outlet blows out air from the central portion directly downward, and blows out air from the outer portion toward the lower outer side,
The operating room air conditioning system characterized in that the second air outlet blows out air directly below .

Images