JP6411263B2 - Insufflation device, method of operating insufflation device - Google Patents

Description

  The present invention relates to an insufflation apparatus that heats and humidifies gas and supplies the gas into a body cavity, and an operation method of the insufflation apparatus.

  Conventionally, a pneumoperitoneum is used to supply a medical gas (for example, carbon dioxide) into a body cavity such as the abdominal cavity to expand the abdominal wall and form a space for examination and work inside the body cavity.

  As such a technique, for example, Japanese Patent Application Publication No. 2004-511309 discloses that a gas used for expanding a body cavity before and during a medical procedure is heated, humidified, and filtered before being sent to a subject. A technique for changing the temperature and humidity of the gas is described.

  Japanese Patent Laid-Open No. 06-098893 discloses that when a specific gas is introduced into a living organism, the gas pressure is lowered by at least one decompression stage prior to the introduction of the gas, and the temperature of the gas is further reduced. A gas introduction heating device is described that heats to a temperature approximately equal to the temperature of the body.

  Furthermore, in Japanese Patent Application Laid-Open No. 2004-159687, a plurality of temperature sensors are fixed on a rod-like column covered with a measurement pipe line to constitute an air supply gas temperature measurement unit, which is obtained from the plurality of temperature sensors. A technique for calculating the temperature of the gas immediately before reaching the body cavity based on the temperature distribution is described. This makes it possible to measure the temperature of the gas immediately before reaching the body cavity without using a dedicated insufflation tube equipped with a heater or a temperature sensor, and to control the temperature and humidity of the gas entering the body cavity of the subject. It has become.

  Japanese Patent Application Laid-Open No. 2004-159688 discloses that the temperature of a gas to be injected is changed according to the operating state of a medical device that is inserted into a body cavity of a subject and used, thereby providing thermal A technique is described in which the temperature of a gas in a body cavity is kept constant without depending on the influence, and the rise or fall of the body temperature of a subject is prevented.

JP-T-2004-511309 Japanese Patent Laid-Open No. 06-098893 JP 2004-159687 A JP 2004-159688 A

  By the way, the heated and humidified gas is sent to the trocar communicating with the body cavity through the tube, but the temperature (atmosphere temperature) of the treatment room air outside the tube is usually lower than the temperature of the subject. . For this reason, the heated and humidified gas is cooled while being transported by the tube, and water vapor in the gas may condense.

  For this reason, for example, paragraphs 0029 to 0031 of the above Japanese translation of PCT publication No. 2004-511309 describe that a heating wire is provided around a conduit (tube) to prevent water vapor in the gas from condensing. ing. Specifically, the publication describes that the temperature of the gas flowing through the conduit is maintained at approximately 35 ° C. to 45 ° C., and that the temperature of the gas delivered to the subject does not exceed 43 ° C. Thus, as described in paragraph 0028, for example, the temperature of the gas is detected by incorporating an additional sensor at the end of the conduit on the subject side.

  Japanese Patent Application Laid-Open No. 2004-159687 discloses the dew condensation and the temperature of the air supply gas in the insufflation tube by controlling the temperature and humidity of the air supply gas based on the temperature distribution obtained from a plurality of temperature sensors. It is described to prevent the decrease.

  However, in the technique described in the above Japanese translation of PCT international publication No. 2004-511309, it is necessary to provide a temperature sensor in the tube in order to measure the gas temperature in the tube, resulting in an increase in the cost of the tube. Moreover, in the technique described in the above Japanese Patent Application Laid-Open No. 2004-159687, it is necessary to arrange a plurality of temperature sensors in order to grasp the temperature change of the gas along the measurement pipe line, which similarly causes an increase in cost. It was.

  The present invention has been made in view of the above circumstances, and obtains the temperature of the gas in the tube at a low cost, and effectively prevents condensation of the heated and humidified gas in the tube. The object is to provide a pneumoperitoneum device.

  An insufflation apparatus according to an aspect of the present invention includes a gas supply source that supplies gas, an air supply device that supplies gas supplied from the gas supply source, and an air supply device that measures the ambient temperature. A first temperature sensor that is disposed in the vicinity of the air supply device, and is connected to the air supply device and humidifies the gas with sterilized water, and is provided in the humidification device, the sterilization device A humidifying heater for warming water; a second temperature sensor for measuring the temperature of the humidifying heater; a heating tube connecting the humidifying device and a trocar inserted into a body cavity; and A tube heater for heating gas, a storage unit for storing a temperature table in which the temperature in the heating tube corresponding to the ambient temperature and the power supplied to the tube heater is recorded in advance, and the first Temperature sensor The temperature in the heating tube acquired by referring to the temperature table based on the ambient temperature measured by the heater and the power supplied to the tube heater is measured by the second temperature sensor. And a controller that controls at least one of the tube heater and the humidifying heater so as to be kept higher than the temperature of the humidifying heater.

  According to an aspect of the present invention, there is provided a method of operating an insufflation apparatus, wherein a gas supply source supplies gas, an air supply device supplies gas supplied from the gas supply source, and is provided in the air supply device. The first temperature sensor measures the ambient temperature, and a humidifier disposed near the air supply device is connected to the air supply device to humidify the gas with sterilized water, A provided humidifying heater heats the sterilized water, a second temperature sensor measures the temperature of the humidifying heater, and a heating tube connects the humidifying device and a trocar inserted into a body cavity. The tube heater heats the gas in the heating tube, and the storage unit records in advance the temperature in the heating tube corresponding to the ambient temperature and the power supplied to the tube heater. Store the temperature table and the controller will The temperature in the heating tube obtained by referring to the temperature table based on the ambient temperature measured by the first temperature sensor and the power supplied to the tube heater is the second temperature. In this method, at least one of the tube heater and the humidifying heater is controlled so as to be kept higher than the temperature of the humidifying heater measured by a temperature sensor.

  According to the pneumoperitoneum of the present invention, the temperature of the gas in the tube can be acquired at low cost, and the heated and humidified gas can be effectively prevented from condensing in the tube.

The figure which shows the structure of the pneumoperitoneum connected to the subject via the trocar in Embodiment 1 of this invention. The figure which shows the example of the temperature table memorize | stored in the memory | storage part of CPU in the said Embodiment 1. FIG. The flowchart which shows the effect | action of the pneumoperitoneum in the said Embodiment 1. The flowchart which shows the effect | action of the pneumoperitoneum in Embodiment 2 of this invention. The figure which shows the structure of the pneumoperitoneum connected to the subject via the trocar in related embodiment relevant to this invention. The flowchart which shows the effect | action of the pneumoperitoneum in the said related embodiment.

Embodiments of the present invention will be described below with reference to the drawings.
[Embodiment 1]

  1 to 3 show Embodiment 1 of the present invention, and FIG. 1 is a view showing a configuration of an insufflation apparatus connected to a subject 9 through a trocar 5.

  The insufflation apparatus humidifies the carbon dioxide gas cylinder 1 that is a gas supply source for supplying gas, the air supply apparatus 2 that supplies the gas supplied from the carbon dioxide gas cylinder 1, and the gas supplied from the air supply apparatus 2. The humidifier 3 and the warming tube 4 that connects the humidifier 3 and the trocar 5 inserted into the body cavity are provided.

  Then, the heated and humidified gas transmitted by the heating tube 4 is introduced into the abdominal cavity 9a which is a body cavity of the subject 9 through the trocar 5.

  The carbon dioxide cylinder 1 supplies, for example, carbon dioxide (carbon dioxide (CO2) gas) as a medical gas, and the gas pressure supplied from the carbon dioxide cylinder 1 is, for example, 6 MPa.

  The air supply device 2 includes a primary pressure reducer 11, an electropneumatic proportional valve 12, a flow rate sensor 13, an electromagnetic valve 14, a first pipe pressure sensor 15, a second pipe pressure sensor 16, and a relief valve. 18, an electric circuit 21, and an ambient temperature sensor 25.

  The primary pressure reducer 11 primarily reduces the pressure of the gas supplied from the carbon dioxide gas cylinder 1 to 6 MPa, for example, to 0.4 MPa.

  The electropneumatic proportional valve 12 adjusts the air supply flow rate by reducing the pressure of the gas decompressed by the primary decompressor 11 to 0.4 MPa in the range of 0 to 80 mmHg. Here, the pressure of the gas after passing through the electropneumatic proportional valve 12 is controlled by, for example, a voltage value of an electric signal applied to the electropneumatic proportional valve 12.

  The flow sensor 13 measures the flow rate of the gas supplied via the electropneumatic proportional valve 12.

  The electromagnetic valve 14 is an on-off valve that can be controlled by an electric signal. When the electromagnetic valve 14 is open, air is supplied from the air supply device 2, and when the electromagnetic valve 14 is closed, air supply from the air supply device 2 is stopped.

  The first pipe pressure sensor 15 measures the pressure in the range on the high pressure side of the gas supplied when the electromagnetic valve 14 is open.

  The second line pressure sensor 16 measures the pressure of the gas supplied when the electromagnetic valve 14 is open in a range on the low pressure side than the range on the high pressure side measured by the first line pressure sensor 15. .

  The relief valve 18 is provided on a pipe branched from the pipe connecting the flow rate sensor 13 and the electromagnetic valve 14 described above, and is closed when the gas pressure in the branch pipe is a predetermined value or less. Thus, the safety valve is controlled so that the gas supplied to the subject 9 via the electromagnetic valve 14 does not exceed a predetermined pressure by shifting to an open state when the value exceeds a predetermined value. In addition, the relief valve 18 can be controlled to open and close by an electric signal, and is also used to release the gas remaining in the pipe line when the use of the insufflation apparatus is finished.

  The electric circuit 21 includes a CPU 22, a driver (DRV) 23, and an A / D conversion unit 24.

  The CPU 22 is electrically connected to the electropneumatic proportional valve 12, the flow sensor 13, the electromagnetic valve 14, the first pipe pressure sensor 15, the second pipe pressure sensor 16, and the relief valve 18 described above, and performs predetermined processing. Based on the program, measurement results are obtained from each sensor and each valve is controlled.

  Further, the CPU 22 is based on the measurement results of the atmospheric temperature sensor 25 and the humidifying heater temperature sensor 34 described later of the humidifying device 3, and the humidifying heater 33 described later of the humidifying device 3 and the tube described later of the heating tube 4. The heater 42 is controlled.

  That is, the CPU 22 records in advance the temperature in the heating tube 4 corresponding to the ambient temperature and the power supplied to the tube heater 42 (in the example shown in this embodiment, the voltage value applied to the tube heater 42). A storage unit for storing a temperature table.

  Then, the CPU 22 determines that the temperature in the heating tube 4 obtained by referring to the temperature table based on the atmospheric temperature measured by the atmospheric temperature sensor 25 and the voltage value applied to the tube heater 42 is humidified. The control unit controls at least one of the tube heater 42 and the humidifying heater 33 so as to be kept higher than the temperature of the humidifying heater 33 measured by the heater temperature sensor 34.

  The driver 23 supplies power to the humidifying heater 33 and the tube heater 42 based on a command from the CPU 22 and drives them. Here, the electric power supplied from the driver 23 to the humidifying heater 33 and the tube heater 42 is adjusted by voltage control, for example. However, the electric power supplied to the humidifying heater 33 and the tube heater 42 (and hence the respective heat generation amounts from the humidifying heater 33 and the tube heater 42) is not limited to voltage control, and current control, pulse width control, etc. The other control may be performed.

  The A / D conversion unit 24 is connected to the ambient temperature sensor 25 and the humidifying heater temperature sensor 34, converts the analog signal output from each sensor into a digital signal, and outputs the digital signal to the CPU 22. As a result, the CPU 22 receives the digitized sensor measurement result.

  The atmospheric temperature sensor 25 is a first temperature sensor that is provided in the air supply device 2 and measures the atmospheric temperature of the space in which the insufflation device is arranged.

  Next, the humidifier 3 is disposed in the vicinity of the above-described air supply device 2 and is connected to the air supply device 2 to humidify the gas supplied from the air supply device 2 with sterilized water 32. It is.

  The humidifying device 3 measures the temperature of the chamber 31 that stores the sterilized water 32, the humidifying heater 33 that receives the power supply from the driver 23 based on the control of the CPU 22 and warms the sterilizing water 32, and the humidifying heater 33. The humidification heater temperature sensor 34 which is a 2nd temperature sensor, and the humidification connector 35 for connecting the humidification heater 33 and the humidification heater temperature sensor 34 to the electric circuit 21 of the air supply apparatus 2 are provided.

  The heating tube 4 transmits the gas while being heated so that the gas humidified by the humidifying device 3 is not condensed due to the atmospheric temperature. The heating tube 4 includes a tube heater 42 for heating the gas in the heating tube 4 and a heating connector 41 for connecting the tube heater 42 to the electric circuit 21 of the air supply device 2 via the humidifying device 3. And.

  Next, FIG. 2 is a diagram illustrating an example of a temperature table stored in the storage unit of the CPU 22.

  As described above, this temperature table is recorded in advance with the temperature in the heating tube 4 corresponding to the atmospheric temperature of the space where the insufflation apparatus is arranged and the voltage value applied to the tube heater 42. It has become.

  The temperature in the heating tube 4 changes according to how much heat the tube heater 42 generates, and also changes depending on the ambient temperature. Therefore, the temperature table shown in FIG. 2 is prepared so as to indicate the temperature in the heating tube 4 in accordance with the ambient temperature and the applied voltage value by performing tests and measurements in advance.

  Specifically, for example, 15, 20, 25, and 30 ° C. are recorded as the ambient temperature, and the voltage applied to the tube heater 42 is recorded at appropriate volt (V) intervals corresponding to each ambient temperature. The temperature in the heating tube 4 is recorded corresponding to the ambient temperature and the applied voltage value.

  The CPU 22 can acquire the temperature in the heating tube 4 by referring to this temperature table based on the ambient temperature and the applied voltage value, but the temperature does not match the recorded ambient temperature (for example, 23 In the case of a voltage value that does not match the recorded applied voltage value (for example, an applied voltage value of 20 V at an ambient temperature of 20 ° C.), an interpolation or extrapolation calculation is performed to obtain a desired atmosphere. The temperature in the tube at the temperature and applied voltage value is calculated (however, instead of operations such as interpolation, the temperature table is described in finer steps and acquired by referring to the nearest value) You may configure.)

  Next, FIG. 3 is a flowchart showing the operation of the pneumoperitoneum.

  When this process is started, the CPU 22 functions as a humidifying heater temperature setting unit and sets the temperature X of the humidifying heater 33 (step S1). The setting of the temperature X by the CPU 22 may be performed as an automatic setting based on the measurement result of the ambient temperature sensor 25 or the like, or may be performed as a manual setting based on an input from the user.

  Next, the CPU 22 supplies power to the humidifying heater 33 through the driver 23 so that the temperature of the humidifying heater 33 measured by the humidifying heater temperature sensor 34 becomes the temperature X set in step S1 (step S2). .

  In addition, the CPU 22 acquires the ambient temperature measured by the ambient temperature sensor 25 (step S3).

  Then, the CPU 22 refers to the temperature table as shown in FIG. 2 based on the ambient temperature acquired from the ambient temperature sensor 25 and the voltage value applied to the tube heater 42 via the driver 23. The tube heater 42 is supplied from the driver 23 so that the acquired temperature Y in the heating tube 4 is kept higher than the temperature X set by the humidifying heater temperature setting unit (that is, Y> X). The voltage value to be applied to is controlled (step S4).

  Then, the CPU 22 opens the electromagnetic valve 14 and supplies air (step S5).

  Thereafter, the CPU 22 determines whether or not an end operation has been performed (step S6), and returns to the above-described step S2 until the end operation is determined to be performed while controlling the humidifying heater 33 and the tube heater 42. Do care.

  Thus, if it is determined in step S6 that the end operation has been performed, the CPU 22 turns off the power supply from the driver 23 to the humidifying heater 33 and the tube heater 42 (step S7), and further closes the solenoid valve 14. Then, the air supply is turned off (step S8), and this process ends.

  According to the first embodiment, since the temperature in the heating tube 4 is obtained by referring to the temperature table based on the measured ambient temperature and the power supplied to the tube heater 42, There is no need to provide a temperature sensor in the tube heater 42, and the temperature of the gas in the heating tube 4 can be obtained at low cost.

  Further, since at least one of the tube heater 42 and the humidifying heater 33 is controlled so that the acquired temperature in the heating tube 4 is kept higher than the temperature of the humidifying heater 33, the heating and humidifying are performed. It is possible to effectively prevent the gas from condensing in the heating tube 4.

Further, since the temperature X of the humidifying heater 33 is set first and the power supplied to the tube heater 42 is controlled so that the temperature Y in the heating tube 4 is kept higher than the temperature X, the humidification is performed. It becomes easy to set the temperature X of the heater 33 as desired.
[Embodiment 2]

  FIG. 4 shows Embodiment 2 of the present invention and is a flowchart showing the operation of the pneumoperitoneum.

  In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted as appropriate, and only different points will be mainly described.

  The configuration of the pneumoperitoneum according to the present embodiment is the same as the configuration shown in FIG. 1 of the first embodiment described above, but the operation is different.

  When the process shown in FIG. 4 is started, the CPU 22 acquires the ambient temperature measured by the ambient temperature sensor 25 (step S11).

  Next, the CPU 22 functions as a tube heater temperature setting unit and sets the temperature Y of the tube heater 42. Further, the CPU 22 refers to the applied voltage in the column where the temperature in the heating tube 4 is Y at the ambient temperature acquired in step S11 in the temperature table as shown in FIG. The applied voltage is acquired. And CPU22 controls the driver 23 so that it may become the acquired applied voltage, and supplies electric power to the tube heater 42 (step S12).

  Subsequently, the CPU 22 acquires the temperature X of the humidifying heater 33 measured by the humidifying heater temperature sensor 34 (step S13).

  Then, the CPU 22 supplies power to the humidifying heater 33 via the driver 23 so that the acquired temperature X is kept lower than the temperature Y set in step S12 (that is, Y> X). Is controlled (step S14).

  Thereafter, air is supplied in step S5, and it is determined whether or not an end operation has been performed in step S6. Until it is determined in step S6 that the end operation has been performed, the process returns to step S11 and performs the above-described processing. If it is determined in step S6 that the end operation has been performed, the power supply to the humidifying heater 33 and the tube heater 42 is turned off in step S7, the air supply is turned off in step S8, and this process ends.

According to such Embodiment 2, while having the effect substantially the same as Embodiment 1 mentioned above, the temperature Y in the heating tube 4 is set previously, and the temperature X of the humidification heater 33 is higher than the temperature Y. Since the electric power supplied to the humidifying heater 33 is controlled so as to be kept low, it becomes easy to set the temperature Y in the heating tube 4 as desired.
[Related Embodiments]

  5 and 6 show an embodiment related to the present invention, and FIG. 5 is a diagram showing a configuration of an insufflation apparatus connected to a subject 9 through a trocar 5.

  In this related embodiment, the same parts as those in the first and second embodiments are denoted by the same reference numerals, and the description thereof is omitted as appropriate, and only different points will be mainly described.

  The pneumoperitoneum of this related embodiment adds the tube temperature sensor 43 which is a 3rd temperature sensor in the heating tube 4 with respect to the pneumoperitoneum shown in FIG. The atmospheric temperature sensor 25 which is the temperature sensor 1 is removed.

  The tube temperature sensor 43 is connected to the A / D converter 24 of the air supply device 2 via the humidifier 3, and the A / D converter 24 digitally outputs the analog signal output from the tube temperature sensor 43. It converts into a signal and outputs it to CPU22. As a result, the CPU 22 receives the digitized sensor measurement result.

  FIG. 6 is a flowchart showing the operation of the pneumoperitoneum.

  When this process is started, the CPU 22 functions as a humidifying heater temperature setting unit and sets the temperature X of the humidifying heater 33 (step S1). The setting of the temperature X by the CPU 22 may be performed by either automatic setting or manual setting.

  Next, the CPU 22 supplies power to the humidifying heater 33 through the driver 23 so that the temperature of the humidifying heater 33 measured by the humidifying heater temperature sensor 34 becomes the temperature X set in step S1 (step S2). .

  Moreover, CPU22 acquires the temperature Y in the heating tube 4 measured by the tube temperature sensor 43 (step S21).

  Then, the CPU 22 keeps the temperature Y in the heating tube 4 acquired in step S21 higher than the temperature X set by the humidifying heater temperature setting unit (that is, Y> X). The voltage value applied from the driver 23 to the tube heater 42 is controlled (step S22).

  Then, the CPU 22 opens the electromagnetic valve 14 and supplies air (step S5).

  Thereafter, the CPU 22 determines whether or not an end operation has been performed (step S6), and returns to the above-described step S2 until the end operation is determined to be performed while controlling the humidifying heater 33 and the tube heater 42. Do care.

  Thus, if it is determined in step S6 that the end operation has been performed, the CPU 22 turns off the power supply from the driver 23 to the humidifying heater 33 and the tube heater 42 (step S7), and further closes the solenoid valve 14. Then, the air supply is turned off (step S8), and this process ends.

  Thus, the pneumoperitoneum according to the related embodiment is arranged in the vicinity of the gas supply source for supplying gas, the air supply device for supplying the gas supplied from the gas supply source, and the air supply device. A humidifier connected to the air supply device for humidifying the gas with sterilized water, a humidifier provided in the humidifier for heating the sterilized water, and a second for measuring the temperature of the humidifier heater. A heating tube for connecting the humidifier and the trocar inserted into the body cavity, a tube heater for heating the gas in the heating tube, and the heating tube. A third temperature sensor that measures the temperature in the warm tube, and the temperature in the warming tube that is measured by the third temperature sensor is greater than the temperature of the humidifying heater that is measured by the second temperature sensor. Too high As has become as having a control unit for controlling at least one of said humidifying heater and the tube heater.

  According to such a related embodiment, by providing the tube temperature sensor 43 in the heating tube 4 and measuring the actual temperature in the heating tube 4 without the need to refer to the temperature table, the heating tube 4 The temperature of the gas inside can be accurately obtained as an actual measurement value.

  Further, since at least one of the tube heater 42 and the humidifying heater 33 is controlled so that the acquired temperature in the heating tube 4 is kept higher than the temperature of the humidifying heater 33, the heating and humidifying are performed. It is possible to effectively prevent the gas from condensing in the heating tube 4.

  Since the temperature X of the humidifying heater 33 is set first and the power supplied to the tube heater 42 is controlled so that the temperature Y in the heating tube 4 is kept higher than the temperature X, the humidification is performed. It becomes easy to set the temperature X of the heater 33 as desired.

  Here, the temperature X of the humidifying heater 33 is set first, but instead, the temperature Y in the heating tube 4 may be set first. In this case, the electric power supplied to the humidifying heater 33 is controlled so that the temperature X of the humidifying heater 33 is kept lower than the temperature Y, and the temperature Y in the heating tube 4 is set as desired. Becomes easy.

  In the above description, the insufflation apparatus has been mainly described. However, an operation method for operating the insufflation apparatus as described above may be used, or a control program for causing a computer to control the insufflation apparatus as described above, It may be a non-temporary recording medium readable by a computer for recording the control program.

  The present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the components without departing from the scope of the invention in the implementation stage. In addition, various aspects of the invention can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, you may delete some components from all the components shown by embodiment. Furthermore, the constituent elements over different embodiments may be appropriately combined. Thus, it goes without saying that various modifications and applications are possible without departing from the spirit of the invention.

DESCRIPTION OF SYMBOLS 1 ... Carbon dioxide gas cylinder 2 ... Air supply apparatus 3 ... Humidification apparatus 4 ... Heating tube 5 ... Tracar 9 ... Subject 9a ... Abdominal cavity 11 ... Primary decompressor 12 ... Electro-pneumatic proportional valve 13 ... Flow sensor 14 ... Electromagnetic valve 15 ... 1st pipe pressure sensor 16 ... 2nd pipe pressure sensor 18 ... Relief valve 21 ... Electric circuit 22 ... CPU
23 ... Driver (DRV)
24 ... A / D converter 25 ... Atmospheric temperature sensor 31 ... Chamber 32 ... Sterilized water 33 ... Humidifying heater 34 ... Humidifying heater temperature sensor 35 ... Humidifying connector 41 ... Warming connector 42 ... Tube heater 43 ... Tube temperature sensor

Claims (4)

A gas supply source for supplying the gas;
An air supply device for supplying the gas supplied from the gas supply source;
A first temperature sensor provided in the air supply device for measuring the atmospheric temperature;
A humidifying device that is disposed in the vicinity of the air supply device and is connected to the air supply device to humidify the gas with sterilized water;
A humidifying heater provided in the humidifying device for heating the sterilized water;
A second temperature sensor for measuring the temperature of the humidifying heater;
A heating tube connecting the humidifier and a trocar inserted into a body cavity;
A tube heater for heating the gas in the heating tube;
A storage unit for storing a temperature table in which the temperature in the heating tube corresponding to the ambient temperature and the power supplied to the tube heater is recorded;
The temperature in the heating tube obtained by referring to the temperature table based on the ambient temperature measured by the first temperature sensor and the power supplied to the tube heater is the second temperature. A control unit for controlling at least one of the tube heater and the humidifying heater so as to be kept higher than the temperature of the humidifying heater measured by the temperature sensor;
A pneumoperitoneum characterized by comprising: A humidifying heater temperature setting unit for setting the temperature of the humidifying heater;
The control unit controls the temperature of the humidifying heater measured by the second temperature sensor to be a temperature set by the humidifying heater temperature setting unit, and is measured by the first temperature sensor. The temperature in the heating tube obtained by referring to the temperature table based on the ambient temperature and the power supplied to the tube heater is higher than the temperature set by the humidifying heater temperature setting unit. The pneumoperitoneum according to claim 1, wherein power supplied to the tube heater is controlled so as to be kept high. A tube heater temperature setting unit for setting the temperature in the heating tube ;
The tube heater becomes a temperature in the heating tube set by the tube heater temperature setting unit at the ambient temperature measured by the first temperature sensor by referring to the temperature table. To obtain the power supplied to the tube heater and to control the obtained power to be supplied to the tube heater, and the temperature of the humidifying heater measured by the second temperature sensor is set by the tube heater temperature setting unit. The insufflation apparatus according to claim 1, wherein the electric power supplied to the humidifying heater is controlled so as to be kept lower than the temperature inside the heated tube . The gas supply source supplies the gas,
An air supply device supplies the gas supplied from the gas supply source;
A first temperature sensor provided in the air supply device measures the ambient temperature;
A humidifier arranged in the vicinity of the air supply device is connected to the air supply device and humidifies the gas with sterilized water,
A humidifying heater provided in the humidifying device warms the sterilized water,
A second temperature sensor measures the temperature of the humidifying heater;
A heating tube connects the humidifier and a trocar inserted into a body cavity,
A tube heater warms the gas in the heating tube,
The storage unit stores a temperature table in which the temperature in the heating tube corresponding to the ambient temperature and the power supplied to the tube heater is recorded in advance,
The temperature in the heating tube acquired by the control unit referring to the temperature table based on the ambient temperature measured by the first temperature sensor and the power supplied to the tube heater is A method for operating an insufflation apparatus, wherein at least one of the tube heater and the humidifying heater is controlled so as to be kept higher than the temperature of the humidifying heater measured by the second temperature sensor. .

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