JPH11178787A - Endoscope system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an endoscope system which prevents the fall of the temp. of a subject by the insufflation gas to be fed into the abdominal cavity by an insufflation device which is easy to handle and is capable of executing temp. control with high accuracy. SOLUTION: The endscope system 1 mainly comprises the endoscope 2 and the insufflation device 5 which inflates the inside of the abdominal cavity. An insufflation gas cylinder 54 packed with carbon dioxide is connected to the high-pressure mouthpiece 52 of the insufflation device 5. The liquid carbon dioxide packed in the insufflation gas cylinder 54 is vaporized and is reduced to the prescribed pressure by passing through a valve unit 8 in the device and is thereafter fed through a inserting and passing hole 6a of a pneumoperitonealization tube 8 and a trocar 6 into the abdominal cavity. The heating temp. and supply rate of the carbon dioxide insufflation gas sent into the abdominal cavity are controlled by a control section 55 electrically connected to the valve unit 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope system provided with an air supply device for supplying an air supply gas such as a carbon dioxide gas into a body cavity.

[0002]

2. Description of the Related Art In recent years, a trocar for guiding an observation endoscope into a body cavity and a trocar for guiding a treatment tool to a treatment site are punctured into the abdomen of a patient without opening the laparotomy to reduce the invasion of the patient. In addition, laparoscopic surgery for performing a therapeutic treatment while observing a treatment tool and a treatment site with an endoscope is performed. In this technique, an electrosurgical device that injects an insufflation gas such as carbon dioxide gas into the abdominal cavity to secure the visual field of the endoscope and a space area for the treatment and an electrosurgical device that also serves as a hemostatic treatment to stop bleeding after the treatment An endoscope system such as a device is used.

[0003] During the above-mentioned surgical operation, a patient may experience a shivering phenomenon called shivering due to a decrease in body temperature due to factors such as room temperature, suppression of the central nervous system due to anesthesia, gas supply or water supply. For this reason, a method of keeping a warmer mat, a shoulder blanket, or the like over a patient's body to keep the temperature, or a method of heating an insufflation gas to be blown into a body cavity to a temperature close to the body temperature has been adopted.

[0004] As a conventional example of heating an insufflation gas sent into a body cavity, there is, for example, US Patent No. 5,006,109 (hereinafter referred to as Douglas). This is to prevent the perforation of the stomach or intestine by sending too much insufflation gas into the abdominal cavity. Method and apparatus for controlling temperature and temperature (hereinafter referred to as pressure
Flow rate / temperature device). This pressure, flow rate,
In the temperature device, a heater is provided in a middle portion of the device, and the gas supplied by the heater is heated by the heater and sent into a body cavity through a gas supply tube.

[0005] The Douglas pressure, flow, and temperature device prevents the temperature of the insufflation gas warmed in the device from decreasing due to the effect of the temperature in the operating room while passing through the insufflation tube. For this reason, a temperature that is predicted to decrease during passage through the air supply tube is predicted, and air supply gas heated to a temperature set in advance higher than the body temperature is sent to the abdominal cavity. However, even if the room temperature is controlled using an air conditioner, the room temperature fluctuates due to the conditions of surgery and the use of various devices, and the amount of heat radiated from the air supply tube into the air changes over time. It has been difficult to control the temperature of the gas to be sent into the abdominal cavity with high precision.

In order to solve this problem, US Pat.
In No. 1,474 (hereinafter referred to as Otto), a heating chamber containing a temperature sensor is provided at the tip of the air supply tube to heat the air supply gas immediately before entering the patient's abdominal cavity and measure the temperature. Method and apparatus for adjusting the insufflation gas used for laparoscopic surgery, which accurately controls the temperature of the insufflation gas sent into the body cavity (hereinafter abbreviated as insufflation insufflation gas device) There is.

[0007]

However, in the otto injection gas supply apparatus, there is a problem that the heating chamber provided at the tip of the gas supply tube hinders the operation of the operator during the operation. . In addition, when cleaning, disinfecting, or sterilizing the air supply tube, there is a problem in that the heating chamber disposed at the distal end portion hinders the workability. In addition, since the configuration of the heating chamber is complicated, reliable sterilization is difficult, and there is a problem that the sterilization time must be extended.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has prevented a decrease in the temperature of a living body due to a gas supplied into an abdominal cavity by an air supply device which is easy to handle and can perform high-precision temperature control. It is intended to provide an endoscope system.

[0009]

An endoscope system according to the present invention is an endoscope system including at least an endoscope for observing the inside of a body cavity and an air supply device for supplying an insufflation gas into the abdominal cavity. The air supply device includes a heater that heats an insufflation gas to be sent into a body cavity, an insufflation gas temperature measurement unit that measures a temperature of the insufflation gas heated by the heater, and a temperature in the operating room. A room temperature measurement unit that measures the temperature of the air supply gas measured by the room temperature measurement unit and the measurement result of the air supply gas temperature measured by the air supply gas temperature measurement unit. And a control unit for controlling the amount.

[0010] According to this configuration, the insufflation gas sent into the abdominal cavity is always supplied from the heater to the insufflation gas based on a comparison result between the temperature in the operating room and the temperature of the insufflation gas heated by the heater. Is controlled, so that the insufflation gas warmed to an appropriate temperature is always fed into the abdominal cavity.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 relate to a first embodiment of the present invention, and FIG. 1 is an explanatory view showing an apparatus configuration and a use state when performing an endoscopic operation using a medical endoscope system. FIG. 3 is an explanatory diagram showing a specific configuration of the air supply device, and FIG. 3 is a diagram illustrating a relationship between the temperature of the outer surface of the air supply tube and the temperature of the air supply gas supplied into the abdominal cavity.

As shown in FIG. 1, an endoscope system 1 according to the present embodiment includes an endoscope 2 having an eyepiece 21 at a base end, for example.
And a light source device 3 for supplying illumination light to the endoscope 2, a high-frequency cautery device 4 for performing hemostasis at a treatment site or removing tissue, and inflating the abdominal cavity to secure a visual field and a treatment area. It mainly comprises an air supply device 5 for supplying an air supply gas.

A trocar 6, 7 which is a guide tube having an insertion hole for guiding the endoscope 2 and the surgical instrument into the abdominal cavity is pierced into the abdomen of the patient. One end of an insufflation tube 8 made of vinyl chloride or Teflon is detachably attached to the trocar 6 having the hole 6a by a detachable connector 81. Further, for example, a high-frequency treatment tool 41 is inserted into the insertion hole 7a of the trocar 7.

The endoscope 2 and the light source device 3 are connected to a light guide cable 22 extending from a base end side of the endoscope 2.
The light source device 3 is configured to be detachably connected by a light guide connector 23 provided in the light source device 3.
The illumination light generated by the lamp 31 provided on the light guide cable 22 is condensed on the end face of the light guide cable 22 by a lens 32. The illumination light collected on the end face of the light guide cable 22 is transmitted to the distal end portion 24 of the endoscope 2 through a light guide fiber bundle passing through the light guide cable 22 so as to illuminate the subject. Has become. The illumination light emitted from the distal end is reflected by the subject, forms an image of the subject in the endoscope 2, and the subject image is transmitted to the eyepiece 21 via an observation optical system (not shown). It has become so.

The high-frequency ablation device 4 and the high-frequency treatment tool 41
Is electrically connected to an active electrode 43 provided on the high-frequency ablation device 4 via an active cord 42 extending from the base end side of the high-frequency treatment tool 41.
Further, a patient plate 45 formed in a flexible and sheet-like shape so as to be in close contact with the skin of the human body is connected to the patient electrode 44 of the high-frequency ablation device 4. The active electrode 43 and the patient electrode 44 of the high-frequency ablation device 4 are connected to an HF output amplifier 46 that generates high-frequency power and is provided inside the device.

The other end of the insufflation tube 8 whose one end is detachably connected to the trocar 6 is detachably connected to an air supply base 51 provided in the air supply device 5. I have. Further, the air supply device 5 is provided with a high-pressure base 52, and one end of a high-pressure air supply tube 53 is connected to the high-pressure base 52, and the other end is filled with, for example, liquefied carbon dioxide. Connected to the supplied gas cylinder 54.

The liquid carbon dioxide filled in the gas supply gas cylinder 54 is vaporized and reduced to a predetermined pressure through a valve unit 9 in the apparatus, and then inserted into the insufflation tube 8 and the insertion hole of the trocar 6. It is fed into the abdominal cavity through 6a. The temperature and flow rate of the carbon dioxide gas supplied into the abdominal cavity are controlled by a control unit 55 electrically connected to the valve unit 9. Reference numeral 10 denotes a room temperature measurement unit provided with a temperature sensor for measuring the temperature in the operating room. As shown by a broken line in the figure, the room temperature measurement unit 10 is not shown in a patient bed, an air supply device 5, an ablation device 4, etc. It is configured so that it can be arranged at a desired position such as a part of a cart on which peripheral devices are mounted. Further, the inside of the gas supply gas cylinder 54 is filled with a supply gas of 60 kgf / cm ^{2 at} normal temperature.

The details of the air supply device 5 will be described with reference to FIG. As shown in the figure, the valve unit 9 and the control unit 5
The gas supply device 5 provided with the gas supply device 5 is provided with an internal conduit 56 for guiding the gas supplied from the high-pressure base 52 to the gas supply base 51 through the valve unit 9. The internal conduit 56 constitutes the valve unit 9 in order from the high-pressure base 52 side, and measures the pressure of the supplied gas from the supplied gas cylinder 54 so that the operator can recognize the remaining amount of supplied gas. the first pressure gauge 91 range from, for example, 0 100Kgf / cm ^2, the air gas cylinder 54 primary pressure reducer 9 to reduce the pressure of the supplied air gas for example, 4 kgf / cm ² from
2. The primary pressure reducer 92 can be controlled by an electric signal.
An electro-pneumatic proportional valve 93 that reduces the pressure reduced by 0 to 24 mm at a control voltage of 0 to 100 mmHg (0 to 0.13 kgf / cm ² ) and adjusts the air supply flow rate to 0 to 50 L / min.
A first valve 94 capable of opening and closing control, a flow measuring unit 9 having a flow sensor 95a for measuring a range of 0 to 50 L / min.
5. First pressure sensor 9 for measuring the range of 0 to 100 mmHg
6a and the second pressure sensor 96b, a second
A valve 97, a heater 98 configured to heat the gas supplied through the second valve 97, for example, a heater and a thermostat, and a temperature of the gas supplied to measure the temperature of the gas supplied by the heater 98. An air supply gas temperature measurement unit 99 having a sensor is provided. When the pressure of the gas supplied from the second valve 97 to the abdominal cavity exceeds a predetermined value, the valve is opened in a branch line 56a branched between the second valve 97 and the heater 98. An exhaust valve 100 is provided to release the supplied gas to the atmosphere.

On the front face of the air supply device 5, a setting section for setting the pressure and temperature of the gas to be fed into the abdominal cavity and a setting panel for displaying the room temperature, the abdominal pressure value and the like are provided. 57 are provided.

The room temperature measuring section 10, setting display section 57, first pressure gauge 91, electropneumatic proportional valve 93, first valve 94, flow rate measuring section 95, first pressure sensor 96a, and second pressure sensor 9
6b, the second valve 97, the heater 98, the supply gas temperature measurement unit 99, and the exhaust valve 100 are electrically connected to the control unit 55.

The control unit 55 includes a power connector 5
Power is supplied via the power supply 8. Also,
The first valve 94 and the second valve 97 form an intra-abdominal pressure measuring unit for determining the abdominal pressure. That is, once the first valve 94 and the second valve 9
7 is closed to form a tank portion and filled with pressure, and then the change in pressure in the tank portion when the second valve 97 is opened is determined by the first pressure sensor 96a and the second pressure sensor 96b. The measured value is transmitted to the control unit 55, and the pressure in the abdominal cavity is calculated by a CPU provided in the control unit from the pressure drop characteristic at this time.

The operation of the air supply device 5 configured as described above will be described. After setting the pressure in the abdominal cavity of the patient and the flow rate of the insufflation gas using the setting unit of the setting display unit 57, the insufflation is started by operating a start button (not shown). Then, according to the opening / closing control of the first valve 94 and the second valve 97, the gas is supplied into the body cavity while repeating the state in which the air supply gas flows / the state in which the flow of the air supply gas stops, and the pressure in the abdominal cavity increases. To go. At this time, the control unit constantly monitors the value of the pressure difference between the set intra-abdominal pressure value of the patient and the actual intra-abdominal pressure. When the pressure difference between the patient's intraperitoneal pressure value and the actual intraperitoneal pressure becomes smaller, the controller 5
5 to output an electric signal to lower the voltage to the electropneumatic proportional valve 93 to reduce the insufflation flow rate, or to output an electric signal to shorten the open state time to the second valve 97 to supply the insufflation gas flowing into the abdominal cavity. The pressure in the abdominal cavity is adjusted by adjusting the flow rate.

When the controller 55 detects that the pressure in the abdominal cavity has risen to a set pressure, for example, 5 mmHg by the surgeon pressing the abdomen of the patient while the insufflation gas is being fed into the abdominal cavity, A signal to open the valve is output from the control unit 55 to the exhaust valve 100, and the gas in the abdominal cavity is exhausted from the exhaust valve 100 to the atmosphere, and the pressure in the abdominal cavity is reduced to the set pressure.

As described above, the gas supplied to the abdominal cavity is heated by the heater 98. At this time, the control of the amount of heating of the gas supplied from the heater 98 is performed by adding room temperature measurement value data, which is a measurement result of the room temperature measurement unit 10 provided in the air supply device 5 and sent to the control unit 55, and Heating is performed based on the air supply gas flow rate data before the temperature state, so that the air supply gas temperature measurement value measured by the air supply gas temperature measurement unit 99 becomes, for example, 55 degrees. The air supply gas heated to 55 degrees by the heater 98 is supplied to the internal conduit 56 of the air supply device 5 and the air supply base 51.
And into the body cavity through the insufflation tube 8 exposed to room temperature. As a result, the heated insufflation gas emits heat to the atmosphere while passing through the insufflation tube 8 and reaches 36 ° C., which is substantially the same as the body temperature when it is sent into the abdominal cavity.

At this time, the rate of decrease in temperature, which decreases when passing through the insufflation tube, is a value determined by the flow rate and the room temperature. Therefore, this value is measured in advance, and based on the measurement result, The program is preliminarily input to a program in the control unit 55 so as to be controlled.

Further, the temperature of the outer surface of the insufflation tube is gradually increased from a state substantially equal to the room temperature before the heated insufflation gas is sent, by the insufflation of the heated insufflation gas. I will do it. For this reason, as shown in FIG. 3, if the heated gas is continuously supplied to the insufflation tube 8, the temperature of the insufflation tube 8 gradually increases as indicated by a solid line. The amount of heating of the gas supplied by the heater 98 is reduced, and is input in advance to a program in the control unit 55 so as to control the gas supply temperature measured by the gas supply temperature measurement unit 99 as shown by the broken line. I have.

Since the temperature of the insufflation gas to be sent into the abdominal cavity varies depending on the operator, when the operator sets the temperature of the insufflation gas to be sent into the abdominal cavity in the setting display section 57, this operation is performed. The amount of heating of the supply gas by the heater 98 and the supply flow rate of the gas by the heater 98 are appropriately controlled according to the temperature set by the user to adjust the supply gas temperature. The heater provided in the heater 98 is set by a thermostat so that the temperature does not become higher than, for example, 60 degrees.

As described above, the room temperature measurement value data of the room temperature measurement unit provided in the air supply device and the air supply gas temperature measurement data measured by the air supply gas temperature measurement unit are transmitted to the control unit. By controlling the amount of gas to be supplied by the heater based on the measured data and controlling the temperature of the supplied gas with high precision, the operator can enter the desired gas in the abdominal cavity through the insufflation tube. An air supply gas set at a desired temperature can be supplied. This prevents a decrease in body temperature due to the insufflation gas supplied into the abdominal cavity.

Further, a temperature drop rate at which the temperature is reduced when the heated insufflation gas passes through the insufflation tube,
Since the relationship between the temperature of the outer surface of the air supply tube and the temperature of the gas to be supplied to the abdominal cavity is input in advance to the program in the control unit, the temperature of the gas to be supplied to the abdominal cavity is set with higher accuracy. In addition, the amount of heating of the heater to the supply gas and the gas flow rate can be appropriately adjusted, so that the entire supply device can be operated efficiently.

Further, since the room temperature measuring section is configured to be detachable from the air supply device, by arranging the room temperature measuring section in a place that is hardly affected by an external temperature change, accurate operation can be performed. By measuring the room temperature in the room, it is possible to accurately control the temperature of the supplied gas.

The insufflation tube 8 of the present embodiment is shown in FIG.
As shown in (a), the insufflation tube 8A has an insufflation gas passage 82 through which the heated insufflation gas passes, and a heat insulation space 83 covering the periphery of the insufflation gas passage 82. You may make it. In this manner, the heat retaining space 83
Is provided, it is possible to prevent the temperature of the heated insufflation gas flowing through the insufflation gas flow path 82 from suddenly decreasing due to the influence of the room temperature, and to heat the heater 98 to the insufflation gas. The amount can be reduced, and the load on the heater 98 can be reduced. Further, by flowing the heated gas or fluid into the heat retaining space 83, it is possible to more effectively prevent a decrease in the temperature of the supplied gas due to the influence of the room temperature.

The structure of the insufflation tube 8 is shown in FIG.
In addition to the configuration shown in (a), as shown in FIG. (B), the space portion 84a disposed substantially at the center of the multi-lumen tube 84 having a plurality of space portions 84a, 84b,. A gas insufflation tube 8B having the other space portions 84b, 84c,... As heat retaining spaces, and a gas supply line 85a through which gas is supplied as shown in FIG. Even with the insufflation tube 8C in which the tube 85 is covered with the heat retaining member 86, the same operation and effect as the insufflation tube 8A can be obtained.

FIG. 5 is an explanatory diagram showing a relationship between an insufflation tube and an endoscope according to an application example of the embodiment of the present invention. In this embodiment, instead of connecting the insufflation tube 8 to the trocar 6, as shown in FIGS. 5A and 5B, the base of the light guide cable 22 which extends the insufflation tube 8 from the light source device 3. It is connected to a light guide base 25 provided at the end. The light guide base 25 is
For example, it is formed of a metal member with a box having an internal space 25a. An insufflation tube connection port 26 is provided on a side portion of the light guide base 25, and the insufflation tube 8 is connected to the insufflation tube connection port 26.

For this reason, the gas supplied by the heater 98 of the gas supply device 5 is sent into the inner space 25 a of the light guide base 25 through the insufflation tube 8.
The gas supplied into the internal space 25a is provided from the light guide bundle 22a provided in the light guide cable 22 to the insertion portion 2a of the endoscope 2 via the condenser lens 22b. Is heated again by heat due to light loss generated when the illumination light is transmitted to the light guide bundle 2b, and passes through the insertion portion 2a of the endoscope 2 so that the distal end portion 2
4 and sent into the abdominal cavity.

As described above, the insufflation tube is connected to the light guide base, which becomes high in heat due to the heat loss of light, and the gas supplied from the air supply device is heated to the inner space of the insufflation tube and the light guide base. By supplying the gas into the abdominal cavity through the endoscope insertion portion, the temperature of the gas supplied by the room temperature when passing through the insufflation tube is re-heated by the heat generated by the light loss, and An insufflation gas at a temperature can be supplied to the abdominal cavity. As a result, the amount of heating from the heater to the air supply gas can be reduced and the air supply gas heated to a desired temperature can be supplied, so that the configuration of the air supply device can be reduced in size and cost can be reduced. Become.

By using the insufflation tubes 8A, 8B, and 8C shown in FIG. 4 instead of using the insufflation tube 8, the amount of heating the insufflation gas by the heater can be further reduced. It is possible to realize a configuration that further reduces the size and cost of the pneumatic device.

By the way, as described above, even if the temperature of the insufflation gas sent from the insufflation device into the body cavity is substantially the same as the body temperature, there is a possibility that the patient's body temperature may decrease during the operation. This is because the factors that lower the body temperature are not only the insufflation gas sent from the insufflation device as described above, but also other factors include room temperature, suppression of the central nervous system by anesthesia, and the temperature of the liquid to be sent. is there. The 26th Adult Nursing I19
Kaneko et al., “Examination of Intraoperative Heating in Laparoscopic Surgery,” on page 151 in 1995, reported that maintaining the difference between body surface temperature and central temperature within 2 degrees could maintain good intraoperative circulation. Has been posted. For this reason, an endoscope system that can integrally control the body temperature of a patient has been desired.

As shown in FIG. 6, an endoscope system 1A according to the present embodiment includes a body surface temperature measuring unit 101 for measuring body surface temperature such as a palm of a patient and a central temperature measuring unit for measuring central temperature such as an eardrum. A body temperature measuring device 103 having a water injection device 102 for heating physiological saline injected into a body cavity for the purpose of washing, etc .; and controlling a temperature of an insufflation gas sent into the body cavity. A possible air supply device 105, a mat heater 107 for heating a warmer mat 106 placed on the patient's back and legs, the body temperature measurement device 103, a water injection liquid heating device 104, an air supply device 105, and a mat heating device Vessel 1
07 is connected by a communication cable or the like, and comprises a centralized control device 108 for controlling the amount of heating of each of the devices 104, 105, and 107 according to changes in the patient's body temperature. The heating water from the injection liquid heating device 104 is supplied through a water supply tube 109, and the gas supplied by the gas supply device 105 is supplied to the abdominal cavity through an insufflation tube 110. It is supplied to. Reference numeral 111 denotes a room temperature measuring unit for measuring the room temperature in the operating room.

The central control unit 108 has a setting unit for setting temperature, flow rate, etc., a display panel for displaying the patient's body temperature and the set values of each device, etc. A notifying unit for notifying is provided. Further, the centralized control device 108 can control the room temperature in the operating room. However, in this embodiment, in order to give priority to an environment in which the operator can easily work, the temperature in the operating room is controlled by the centralized control device 108. Rather than control by the surgeon's wishes. Also, for safety reasons, the upper heating limit of each device is set in advance. Further, the heating amount of each device is controlled so as to minimize the heating amount unless the body temperature is reduced.

The operation of the endoscope system configured as described above will be described. First, when performing an operation, the body surface temperature measurement unit is attached to the palm, and the central temperature measurement unit is set on the eardrum. During the operation, the body surface temperature and the central temperature of the patient are constantly measured by the body temperature measuring device.

For example, the central controller 108 detects that the body temperature has decreased or the difference between the body surface temperature and the central temperature has become 2 degrees or more during water supply into the abdominal cavity using the water injection liquid heating device 104. Then, the amount of heating of the injection liquid heating device 104 to the physiological saline is automatically increased by the central control device 108,
Prevent further decrease in body temperature and use mat heater 1
07 is increased to prevent a decrease in the patient's body temperature.

As described above, by controlling the body temperature measuring device, the water injection device heating device, the air supply device, and the mat heater using the centralized control device, the surgeon can consider the decrease in the patient's body temperature. In the optimal environment, surgery can be performed in a concentrated manner.

The devices to be controlled are programmed in advance according to the usage status of each device. Also, instead of controlling the display unit that displays the patient's body temperature, the setting status of each device, and the like, and the setting unit that changes the set value collectively by the centralized control device, the display unit provided in each device displays them. Alternatively, the endoscope system may be controlled by changing the set value in the setting unit of each device. Further, the measurement of the patient's body temperature is not limited to the palm and the eardrum, and the body temperature may be measured at a plurality of points and each device may be controlled based on the average body temperature.

The present invention is not limited to only the above-described embodiments, but can be variously modified without departing from the gist of the invention.

[Appendix] According to the above-described embodiment of the present invention, the following configuration can be obtained.

(1) In an endoscope system provided with at least an endoscope for observing the inside of a body cavity and an air supply device for supplying an air supply gas into the abdominal cavity, the air supply device sends the gas into the body cavity. A heater for heating the gas, an insufflation gas temperature measurement unit for measuring the temperature of the insufflation gas heated by the heater, a room temperature measurement unit for measuring the temperature in the operating room, and measurement by the room temperature measurement unit A control unit that controls the amount of heated gas supplied by the heater based on the comparison result of comparing the measured room temperature value and the measured value of the supplied gas temperature measured by the supplied gas temperature measurement unit. An endoscope system comprising:

(2) The amount of gas supplied by the heater is measured by the room temperature measurement value of the room temperature measurement unit sent to the control unit,
2. The endoscope system according to claim 1, wherein the endoscope system is controlled by an air supply gas flow value.

(3) One end of a light guide cable detachably connected to a light source device for supplying illumination light to the endoscope is connected to a light guide base, and the light guide base is connected to the abdominal cavity from the air supply device. 2. The endoscope system according to claim 1, wherein a position end of a pneumoperitoneum tube for supplying heated air to the tube is connected.

(4) The endoscope system according to appendix 3, wherein the insufflation tube has an air supply gas flow path and a heat retaining space.

(5) The insufflation tube is composed of one space portion disposed in the center portion and serving as an air supply gas flow channel, and a plurality of space portions disposed around the space portion and serving as heat retention space portions. 4. The endoscope system according to claim 3, wherein the endoscope system is a multi-lumen tube.

(6) The endoscope system according to appendix 3, wherein the insufflation tube is composed of a conduit tube having an air supply gas flow path and a heat retaining member covering the conduit tube.

(7) A body temperature measuring device for measuring a change in a patient's body temperature, an air supply device for controlling the temperature of an insufflation gas fed into a body cavity, and a mat heating device for heating a warmer mat placed on the patient's body Device, the body temperature measuring device, an air supply device, a mat heater is connected, an endoscope system comprising a centralized control device for controlling each device, wherein the body temperature of the patient measured by the body temperature measuring device An endoscope system that controls the amount of heating of an air supply device and a mat heater by the central control device according to a change.

(8) A body temperature measuring device for measuring a change in the body temperature of a patient, a water injection liquid heating device for heating physiological saline, and an air feeding device for controlling the temperature of the air gas sent into the body cavity.
A mat heater that heats a warmer mat placed on a patient's body, and a central control device that is connected to the body temperature measurement device, the injection liquid heating device, the air supply device, and the mat heater and controls each device. An endoscope system for controlling the amount of heating of a water injection liquid heating device, an air supply device, and a mat heater by the central control device in accordance with a change in the patient's body temperature measured by the body temperature measurement device. Endoscope system.

(9) The supplementary note 8 wherein the body temperature measuring device has at least one of a body surface temperature measuring unit for measuring body surface temperature such as a palm of a patient and a central temperature measuring unit for measuring central temperature such as eardrum. Endoscope system.

[0055]

As described above, according to the present invention, it is possible to prevent the temperature of the living body from being lowered by the gas supplied into the abdominal cavity by using an air supply device which is easy to handle and can perform high-precision temperature control. An endoscope system can be provided.

[Brief description of the drawings]

FIGS. 1 to 3 relate to a first embodiment of the present invention, and FIG. 1 is a diagram illustrating an apparatus configuration and a use state when performing an endoscopic operation using a medical endoscope system. Figure

FIG. 2 is an explanatory diagram showing a specific configuration of an air supply device.

FIG. 3 is a diagram for explaining the relationship between the temperature of the outer surface of the air supply tube and the amount of heating of the air supply gas supplied into the abdominal cavity.

FIG. 4 is an explanatory diagram showing a configuration of an insufflation tube.

FIG. 5 is an explanatory diagram showing a relationship between an insufflation tube and an endoscope according to an application example of the embodiment of the present invention.

FIG. 6 is an explanatory diagram showing another configuration example of the endoscope system.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 endoscope system 2 endoscope 3 light source device 4 air supply device 10 room temperature measurement unit 55 control unit 98 heater 99 gas supply gas temperature measurement unit

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takeo Usui 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Industrial Co., Ltd. (72) Inventor Naoki Sekino 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd. (72) Inventor Seiya Fujita 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd.

Claims (1)

[Claims] 1. An endoscope system comprising at least an endoscope for observing the inside of a body cavity and an air supply device for supplying an insufflation gas into an abdominal cavity, wherein the air supply device is configured to supply air into the body cavity. A heater for heating the gas, an insufflation gas temperature measurement unit for measuring the temperature of the insufflation gas heated by the heater, a room temperature measurement unit for measuring the temperature in the operating room, and a measurement performed by the room temperature measurement unit A control unit that controls the amount of gas supplied by the heater based on the comparison result of comparing the measured value of the supplied gas temperature with the measured value of the supplied gas temperature measured by the supplied gas temperature measurement unit. An endoscope system comprising: