JP2022156839A - Gas removal system for laparoscopic surgery - Google Patents

Abstract

To provide a gas removal system for laparoscopic surgery capable of removing gas in an abdominal cavity of a patient, completely without discharging gas into an operation room.SOLUTION: A gas removal system for laparoscopic surgery for removing gas in an abdominal cavity in the laparoscopic surgery, includes a gas suction path 10 whose one end 10a is arranged in an abdominal cavity C, a gas storage part 11 connected to the other end of the gas suction path 10, and a pump part 12 provided in the middle of the gas suction path 10. After sucking gas in the abdominal cavity C by suction operation by the pump part 12 through the gas suction path 10, gas is stored in the gas storage part 11.SELECTED DRAWING: Figure 1

Description

The present invention relates to a laparoscopic gas removal system for use in laparoscopic surgery to remove gas within the abdominal cavity.

In recent years, laparoscopic surgery, which is performed without opening the abdomen, is known for the purpose of reducing the burden on the patient during surgery. In this laparoscopic surgery, a first trocar for inserting an endoscope for observing the inside of the abdominal cavity and a second trocar for inserting a treatment instrument into the abdominal cavity are punctured into the patient's abdomen. While observing the inside of the abdominal cavity with the endoscope inserted in the second trocar, the surgical instrument inserted in the second trocar is operated to perform a predetermined surgery.

In such laparoscopic surgery, a pneumoperitoneum device is used to secure the field of view of the endoscope and to secure a region within the abdominal cavity for manipulating treatment instruments. This pneumoperitoneum device supplies a gas (for example, carbon dioxide) into the patient's abdominal cavity to increase the pressure in the abdominal cavity, thereby inflating the abdomen and securing a predetermined area in the abdominal cavity.

During laparoscopic surgery, surgical smoke such as smoke and mist (moisture) is generated when using an electric scalpel or an ultrasonic treatment device, and the operative field of the endoscope is obstructed by the surgical smoke. In addition, unexpected bleeding and bodily fluids may spurt out, so they are sucked out of the abdominal cavity together with gas and discharged (see Patent Document 1). Also, after removing moisture and impurities from the aspirated gas, it is recirculated to the pneumoperitoneum device and re-supplied into the abdominal cavity (see Patent Document 2).

Japanese Patent Publication No. 2017-502703 JP 2020-96887 A

However, in the conventional device, the gas sucked from the abdominal cavity is directly discharged into the operating room, and even in the device that recirculates the gas, excess gas is discharged into the operating room. For this reason, if a patient is infected with some kind of infectious disease such as the new corona, gas containing viruses and bacteria with a risk of infection will spread in the operating room, and doctors and nurses will not be able to inhale the gas. There was a risk of being infected with the same infectious disease.

The present invention has been made in view of the above-mentioned problems, and can completely remove gas in the patient's abdominal cavity without discharging it into the operating room, thereby reducing the risk of infection for doctors and nurses. It is an object of the present invention to provide a gas removal system for laparoscopic surgery that can be prevented or mitigated.

In order to achieve the above object, the present invention provides a gas removal system for laparoscopic surgery for removing intraperitoneal gas in laparoscopic surgery, comprising: a gas suction path having one end disposed in the abdominal cavity; A gas reservoir connected to the other end of the gas suction path is provided, and after gas in the abdominal cavity is sucked through the gas suction path, it is stored in the gas reservoir.

According to this, since the gas sucked from the abdominal cavity is stored in the gas storage part, the gas in the patient's abdominal cavity can be completely removed without being discharged into the operating room.

Moreover, it is preferable that the gas suction path is provided with a pump section for sucking the gas in the abdominal cavity, and the gas in the abdominal cavity is sucked through the gas suction path by the suction operation of the pump section. According to this, gas in the abdominal cavity can be easily and reliably sucked by the suction operation of the pump section.

In addition, it is preferable that the inside of the gas reservoir is in a lower pressure state or a vacuum state than the pressure in the abdominal cavity, and the gas in the abdominal cavity is sucked through the gas suction path by the low pressure state or the vacuum state of the gas reservoir. . According to this, the intraperitoneal gas can be easily and reliably aspirated by the low-pressure state or vacuum state of the gas reservoir.

The gas reservoir includes at least one adsorbent selected from silica gel, alumina, activated carbon, and zeolite, and a gas reservoir container containing the adsorbent. It is preferably detachably provided in the suction path. According to this, the moisture contained in the gas can be reliably adsorbed by at least one adsorbent of silica gel, alumina, activated carbon, and zeolite. Moreover, since the gas reservoir container is detachably attached to the gas suction path, when the adsorbent has adsorbed a predetermined amount of moisture, the gas can be released to the atmosphere by removing the gas reservoir container from the gas suction path. Disposal or predetermined processing can be performed without touching.

Further, it is preferable that the inside of the gas reservoir is in a vacuum state and the temperature is set to 50 to 70 degrees. According to this, it is possible to maximize the adsorption amount of the gas while improving the ease of handling of the container and saving energy.

Further, it is preferable that the gas suction path is provided with a gas-liquid separation section for separating the sucked gas and liquid. According to this, since the gas sucked from the abdominal cavity is separated from the liquid, it is possible to easily perform subsequent processes related to adsorption of moisture and impurities in the adsorption section and adsorption of moisture and gas in the gas storage section. becomes.

Further, it is preferable that the gas suction path is provided with an adsorption portion that adsorbs moisture and/or impurities contained in the gas sucked from the abdominal cavity. According to this, the moisture and/or impurities contained in the gas sucked from the abdominal cavity can be adsorbed before storage, and the moisture and gas can be adsorbed in the gas storage section and reused when the gas is recirculated. can be easily performed.

In addition, the adsorption unit includes at least one adsorbent selected from silica gel, alumina, activated carbon, and zeolite, and an adsorption unit container in which the adsorbent is housed in a sealed state. It is preferably provided so as to be detachable from the suction path. According to this, moisture contained in the gas can be reliably adsorbed by at least one adsorbent of alumina, activated carbon, and zeolite, and subsequent treatment in the gas reservoir can be easily performed. Moreover, since the adsorption portion container is detachably provided in the gas suction path, when the adsorbent has adsorbed a predetermined amount of moisture, removing the adsorption portion container from the gas suction path exposes the adsorbent to the outside air. can be discarded or processed without

In addition, it is preferable that the adsorption section is provided with a plurality of layers of at least two kinds of adsorbents such as silica gel, alumina, activated carbon and zeolite from the suction side to the discharge side. According to this, the moisture contained in the gas can be easily and reliably adsorbed.

Moreover, it is preferable that the adsorbents are arranged so that the adsorbent in each layer adsorbs moisture in the gas less than the adsorbent in the previous layer. According to this, after a large amount of moisture is adsorbed from the original high relative humidity gas in the adsorption part from the gas suction side to the gas discharge side, a small amount of moisture remaining from the gas with low relative humidity is absorbed. By sequentially adsorbing the moisture contained in the gas, the moisture contained in the gas can be efficiently adsorbed stepwise.

In addition, it is preferable that the adsorption part is provided with silica gel, alumina or activated carbon as an adsorbent in a first layer on the suction side, and zeolite as an adsorbent in a second layer following the first layer. In addition, the adsorption part is provided with silica gel as an adsorbent for the first layer on the suction side, alumina or activated carbon as an adsorbent for the second layer following the first layer, and zeolite as an adsorbent for the third layer following the second layer. It is preferable that In addition, the adsorption part includes silica gel as the adsorbent for the first layer on the suction side, alumina as the adsorbent for the second layer following the first layer, activated carbon as the adsorbent for the third layer following the second layer, and the third layer. A zeolite is preferably provided as adsorbent in the subsequent fourth layer. According to these combinations, the moisture contained in the gas can be efficiently and reliably adsorbed step by step.

Further, the inside of the adsorption unit container is partitioned into a plurality of partitioned chambers through communication holes, each partitioned chamber contains an adsorbent made of the same or different material, and the partitioned chamber on the gas suction side contains the gas. It is preferable that the suction side end of the suction path is detachably connected, and the discharge side end of the gas suction path is detachably connected to the compartment on the gas discharge side. According to this, the gas sucked from the abdominal cavity flows from the suction side end of the gas suction path into the suction side compartment, and after predetermined moisture and impurities are removed in the compartment, the communication hole The gas flows into the adjoining compartment from the second compartment, and the predetermined moisture and impurities are removed in the compartment. Moisture and impurities contained in can be easily and reliably removed. Also, if the suction side end of the gas suction path is removed from the suction side compartment and the discharge side end of the gas suction path is removed from the discharge side compartment, the adsorbent can be discarded or disposed without exposing it to the outside air. can be processed.

In addition, the adsorption unit container has a communication hole provided in the upper part of the partitioned chamber, and the suction side end of the gas suction path is detachably connected to the lower part of the partitioned chamber on the gas suction side, and the gas is sucked. It is preferable that the discharge-side end of the gas suction path is detachably connected to the lower part of the discharge-side compartment. According to this, the adsorbent can be filled from the top of the bag and sealed, and the adsorption section can be easily manufactured.

In addition, the adsorption part container is provided with a filter in a lower region where the suction side end and the discharge side end of the gas suction path in the partitioned chamber are connected, and the adsorbent is arranged above the filter. preferable. According to this, it is possible to prevent the adsorbent contained in the compartment from clogging the suction side end and the discharge side end of the gas suction path.

In addition, a gas supply passage having one end disposed in the abdominal cavity and the other end connected to a gas cylinder for supplying gas from a pneumoperitoneum device, and one end connected to the gas suction passage and the other end a gas circulation path connected to the gas supply path; and an on-off valve provided in the gas suction path on the gas reservoir side of the connection portion between the gas suction path and the gas circulation path, When the on-off valve is opened, gas in the abdominal cavity is delivered to the gas reservoir through the gas suction path, while when the on-off valve is closed, gas in the abdominal cavity is released into the gas aspiration path and the gas circulation path. is preferably delivered to the gas supply line through. According to this, by switching the gas delivery path by opening and closing the opening and closing valve, the gas aspirated from the abdominal cavity can be stored in the gas storage unit without being discharged into the operating room, or can be stored in the gas storage unit in the pneumoperitoneum apparatus. It can be reused after adjusting the temperature, pressure and humidity.

According to the present invention, gas in the patient's abdominal cavity can be completely removed without being discharged into the operating room, thereby preventing or reducing the risk of infection for doctors and nurses.

1 is a schematic diagram showing the overall configuration of a gas removal system for laparoscopic surgery according to a first embodiment of the present invention; FIG. FIG. 3 is a cross-sectional view showing a configuration example of a container for a gas reservoir. FIG. 2 is a schematic diagram showing the overall configuration of a gas removal system for laparoscopic surgery according to a second embodiment of the present invention; 4 is a table showing a correspondence relationship between adsorbents and relative humidity in an adsorption section; It is a table|surface which shows the combination of the adsorption agent in an adsorption|suction part. FIG. 3 is a front view showing a first configuration example of a container (bag) for the adsorption section; FIG. 10 is a front view showing a second configuration example of the adsorption section container (bag). FIG. 11 is a schematic diagram showing the overall configuration of a gas removal system for laparoscopic surgery according to a third embodiment of the present invention;

<First embodiment>
Next, a first embodiment of a gas removal system for laparoscopic surgery (hereinafter referred to as the system) according to the present invention will be described with reference to FIGS. 1 and 2. FIG.

In laparoscopic surgery using this system, a first trocar for inserting an endoscope into the abdominal cavity C for observing the inside of the abdominal cavity C and a second trocar for inserting a treatment instrument into the abdominal cavity C are used. The patient's abdomen is punctured, and while the inside of the abdominal cavity C is observed with the endoscope inserted in the first trocar, a treatment instrument inserted in the second trocar is operated to perform a predetermined surgery. Since these devices other than the present system are known, the description thereof will be omitted.

As shown in FIG. 1, this system comprises a gas suction path 10 having one end 10a disposed in the abdominal cavity C via a trocar (not shown), and a gas reservoir connected to the other end of the gas suction path 10. 11 and a pump part 12 provided in the middle of the gas suction path 10 , and the gas in the abdominal cavity C is sucked through the gas suction path 10 by the suction operation of the pump part 12 and stored in the gas storage part 11 .

As shown in FIG. 2, the gas reservoir 11 includes one or more adsorbents 111 and a gas reservoir container 112 containing the adsorbent 111. The gas reservoir container 112 sucks gas. It is detachably provided on the path 10 .

The gas reservoir container 112 is a rigid container made of metal or synthetic resin, and is made of a material that does not allow gas to permeate to the outside. are detachably connected via a connector 113 .

Examples of the adsorbent 111 include granular materials such as silica gel, alumina, activated carbon, and zeolite that mainly adsorb moisture contained in gas. In particular, when zeolite is used as the adsorbent 111, it adsorbs no gas (carbon dioxide gas) or only a very small amount of it, so that the gas and water can be stored in the gas storage container 112 in a separated state.

When the gas in the abdominal cavity C is sucked together with liquid such as surgical smoke (moisture and smoke), blood and body fluids by the suction operation of the pump section 12, the gas and the like pass through the gas suction passage 10 on the suction side and the pump section 12. , the gas is sent from the pump portion 12 through the gas suction passage 10 on the discharge side to the gas storage portion 11 and is stored in the gas storage portion 11 . Moisture and impurities contained in the gas stored in the gas storage section 11 are appropriately separated from the gas by being adsorbed by the adsorbent 111 of the gas storage section 11 . After that, when a predetermined amount of gas is stored in the gas storage part 11, the gas, moisture, and impurities can be discharged into the operating room by removing the gas storage part container 112 from the gas suction path 10 via the connector 113. can be removed completely without The connector 113 is closed automatically or manually when the gas reservoir container 112 is removed from the gas suction path 10 .

In this embodiment, gas in the abdominal cavity C is sucked through the gas suction path 10 by the suction operation of the pump section 12, but gas may be sucked through the gas suction path 10 by other methods. For example, the inside of the gas reservoir container 112 is set to a lower pressure state or a vacuum state than the pressure in the abdominal cavity C, and the gas in the abdominal cavity C is sucked through the gas suction path 10 by the low pressure state or vacuum state of the gas reservoir container 112. can be considered. In this case, the gas reservoir container 112 is preferably set to a low pressure state with an internal pressure of 13.3 Kpa (100 torr) or less, preferably a vacuum state of 133 Pa (1 torr) or less.

Further, in the gas reservoir 11 , an adsorbent that adsorbs gas may be stored in the gas reservoir container 112 . According to this, since the gas is adsorbed by the adsorbent, a large amount of gas can be stored inside the container 112 for the gas storage portion.

Further, the gas reservoir container 112 is preferably set to a vacuum state inside and a temperature of 50 to 70 degrees around 60 degrees, more preferably 55 to 65 degrees. Specifically, when the temperature inside the gas reservoir container 112 increases, the amount of gas adsorbed by the adsorbent (for example, Oxybu-7) increases, but the inside of the gas reservoir container 112 is kept in a vacuum state ( 133 Pa or less), the amount of gas adsorbed by the adsorbent hardly changes even when the internal temperature exceeds around 60°C. For this reason, when the inside is in a vacuum state and the temperature is set to 50 to 70 degrees around 60 degrees, more preferably 55 to 65 degrees, gas can be adsorbed while making the container easy to handle and saving energy. The amount can be maximally increased.

<Second embodiment>
Next, a second embodiment of this system will be described with reference to FIGS. 3 to 5. FIG.

In this embodiment, as shown in FIG. 3, the gas suction path 10 is provided with a gas-liquid separation section 13 and an adsorption section 14 .

The gas-liquid separation unit 13 is provided between the one end 10a of the gas suction path 10 and the pump unit 12, and separates gas and liquid (for example, water, blood, body fluids, etc.) sucked through the gas suction path 10. .

The adsorption section 14 is provided between the gas-liquid separation section 13 and the pump section 12 and removes moisture and impurities contained in the gas sucked from the abdominal cavity C. and an adsorption unit container 142 in which the adsorbent 141 is accommodated. Configuration examples of the adsorbent 141 and the adsorption unit container 142 will be described below.

(Configuration example of adsorbent 141)
The adsorbent 141 is, for example, at least one adsorbent selected from silica gel, alumina, activated carbon, and zeolite. is good.

In addition, as shown in FIG. 4, the adsorbent 141 has different adsorption amounts of moisture, organic gas (surgical smoke) and carbon dioxide (CO2) depending on the type of adsorbent 141. It may be arranged so that the degree of adsorption of moisture (relative humidity) of the gas is lower than that of the adsorbent 141 of the layer.

For example, as the adsorbent 141 of the first layer on the suction side, an adsorbent (for example, activated carbon, activated alumina, silica gel) that adsorbs moisture in gas with a relative humidity of 40% RH or higher is provided. A configuration in which an adsorbent having a lower relative humidity than the first layer is provided as the two-layer adsorbent 141 is exemplified.

Specifically, there is a configuration of a combination of adsorbents 141 as shown in FIG. For example, when the adsorbent 141 is composed of a combination of two layers, silica gel, activated alumina or activated carbon is provided as the adsorbent 141 for the first layer on the suction side, and zeolite is provided as the adsorbent 141 for the second layer following the first layer. is preferred. In addition, when the adsorbent 141 is composed of a combination of three layers, silica gel as the adsorbent 141 for the first layer on the suction side, activated alumina or activated carbon as the adsorbent 141 for the second layer following the first layer, and the second layer A configuration in which zeolite is provided as the adsorbent 141 of the third layer that follows is preferable. Furthermore, when it is composed of a combination of four layers of adsorbents 141, silica gel as the adsorbent 141 for the first layer on the suction side, activated alumina as the adsorbent 141 for the second layer following the first layer, and activated alumina following the second layer. A configuration in which activated carbon is provided as the adsorbent 141 of the third layer and zeolite is provided as the adsorbent 141 of the fourth layer following the third layer is preferable. In addition, as shown in FIG. 5, other combination examples of the adsorbent 141 may be used.

According to this, after a large amount of moisture is adsorbed from the original gas with high relative humidity in the adsorption part 14 from the gas suction side to the gas discharge side, a small amount of moisture remains from the gas with low relative humidity. The moisture contained in the gas can be removed stepwise and efficiently by sequentially adsorbing the moisture.

(Configuration example of the adsorption unit container 142)
The adsorption unit container 142 is a rigid or bag-like container made of metal or synthetic resin, and is made of a material that does not allow gas or the like to permeate to the outside.

The inside of the adsorption unit container 142 is partitioned into a plurality of partitioned chambers through communication holes, each partitioned chamber contains an adsorbent made of the same or different material, and the partitioned chamber on the gas suction side contains gas. The suction side end of the suction path 10 may be detachably connected, and the discharge side end of the gas suction path 10 may be detachably connected to the compartment on the gas discharge side.

For example, as shown in FIG. 6 , the adsorption unit container 142 is made of a synthetic resin bag that covers the adsorbent in a sealed state, and the bag is detachably attached to the gas suction path 10 . configuration.

The adsorption unit container 142 has a first partitioned chamber 142a and a second partitioned chamber 142b that are partitioned on the left and right inside. A communication hole 142c is provided. The first partitioned chamber 142a of the adsorption unit container 142 is provided with the first layer of adsorbent 141 inside, and is provided with a connector 143 at the top, through which the gas suction path 10 is connected. It is detachably connected to the suction side end. The second partitioned chamber 142b of the adsorption unit container 142 is provided with the second layer of adsorbent 141 inside, and is provided with a connector 143 at the top, through which the gas suction path 10 is connected. It is detachably connected to the discharge side end.

According to this, the gas aspirated from the abdominal cavity C flows into the first compartment 142a from the aspiration-side end of the gas aspiration path 10, and is absorbed by the adsorbent 141 in the first compartment 142a. After the moisture and impurities have been removed, it flows into the second partitioned chamber 142b through the communication hole 142c. Since the gas is discharged from the discharge side end of the gas, moisture and impurities contained in the gas can be easily and reliably adsorbed.

Further, when the adsorbent 141 of the adsorption portion container 142 adsorbs a predetermined amount of water or impurities, the connector 143 is connected to the suction side end of the gas suction path 10 from the first partitioned chamber 142 a of the adsorption portion container 142 . When the discharge side end of the gas suction path 10 is removed from the second partitioned chamber 142b of the adsorption portion container 142 through the connector 143, the adsorption portion container in which the adsorbent 141 is hermetically accommodated is obtained. 142 can be easily and reliably removed, and the adsorbent 141 can be discarded or given treatment without being exposed to the outside air in the operating room. The connector 143 is closed automatically or manually when the adsorption portion container 142 is removed from the gas suction path 10 .

In this embodiment, the connector 143 is provided on the upper portion of the adsorption portion container 142. However, as shown in FIG. A connector 143 may be provided at the bottom of the container 142 . According to this, the adsorbent 141 can be filled from the top of the adsorption section container 142 and sealed, and the adsorption section 14 can be easily manufactured. In this case, in order to prevent the adsorbent 141 from clogging the connector 143, a filter 144 (wire mesh, punching plate, nonwoven fabric, etc.) is provided in the lower region of the space of the adsorption unit container 142, and the adsorbent is adsorbed on the filter 144. An agent 141 may be placed.

The adsorbent container 142 is made transparent or translucent, or provided with an inspection window so that the state of the adsorbent 141 (for example, color). For example, when silica gel is used as the adsorbent 141, as the silica gel adsorbs moisture, the color changes from blue to orange. Therefore, it can be determined by the color that the adsorbent 141 has adsorbed a predetermined amount of moisture. .

Moreover, although the same adsorbent 141 is provided in the same space in the adsorption section container 142, different adsorbents 141 may be provided in layers in the same space.

<Third Embodiment>
Next, a third embodiment of this system will be described with reference to FIG.

In this embodiment, as shown in FIG. 8, a gas supply path 20 for newly supplying gas from a gas cylinder 21 into the abdominal cavity C and a gas circulation path 30 for circulating the gas sucked from the abdominal cavity C are provided. A gas cylinder 21 and a pneumoperitoneum device 22 are provided in the supply path 20 .

One end 20a of the gas supply line 20 is arranged in the abdominal cavity C via a trocar (not shown), and the other end is connected to a gas cylinder 21. 20 into the peritoneal cavity C.

The gas circulation path 30 has one end connected to the gas suction path 10 and the other end connected to the gas supply path 20 . The gas is supplied into the abdominal cavity C through the gas supply channel 20 by the pneumoperitoneum device 22 .

The gas suction path 10 is provided with an on-off valve 15 on the side of the gas storage section 11 with respect to the connection section A of the gas circulation path 30 . Therefore, when the on-off valve 15 is opened by the control unit (not shown), the gas discharged from the pump unit 12 is directly sent to the gas storage unit 11 through the gas suction path 10. On the other hand, when the on-off valve 15 is closed, Gas discharged from the pump section 12 is delivered to the gas supply path 20 through the gas circulation path 30 .

The gas suction path 10 may be provided with a gas purity measuring section 16 between the connecting section of the gas circulation path 30 and the pump section 12 . According to this, when the purity of the gas measured by the gas purity measuring unit 16 does not satisfy a predetermined value, the control unit (not shown) opens the on-off valve 15 to send the gas to the gas storage unit 11. When the purity of the gas measured by the gas purity measuring unit 16 satisfies a predetermined value, the control unit (not shown) closes the on-off valve 15 to send the gas to the gas supply line 20 through the gas circulation line 30. be able to.

The pneumoperitoneum device 22 is a device for supplying the gas in the gas cylinder 21 and/or the gas sucked from the abdominal cavity C into the abdominal cavity C through the gas supply channel 20, and the temperature, pressure, humidity, etc. of the gas are appropriately adjusted. It is supplied into the abdominal cavity C after being adjusted. When supplying the gas, the gas in the gas cylinder 21 and the sucked gas are appropriately switched or mixed according to the temperature, pressure, humidity, etc. of the gas, and then supplied into the abdominal cavity C.

As described above, according to the present system according to the third embodiment, by switching the gas delivery path by opening and closing the on-off valve 15, the gas sucked from the abdominal cavity C is not discharged into the operating room, and the gas is retained. It can be stored in the part 11 or can be reused after being adjusted to a predetermined temperature, pressure and humidity in the pneumoperitoneum device 22 .

Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be added to the illustrated embodiment within the same scope as the present invention or within an equivalent scope.

DESCRIPTION OF SYMBOLS 10... Gas suction path 11... Gas storage part 111... Adsorbent 112... Gas storage part container 112a... Mouth part 113... Connector 12... Pump part 13... Gas-liquid separation part 14... Adsorption part 141... Adsorbent 142... Adsorption part Container 142a First compartment 142b Second compartment 142c Communication hole 143 Connector 144 Filter 15 On-off valve 16 Gas purity measurement unit 20 Gas supply path 21 Gas cylinder 22 Pneumoperitoneum device 30 … gas circulation path C … abdominal cavity

Claims (17)

A gas removal system for laparoscopic surgery for removing gas in the abdominal cavity in laparoscopic surgery, comprising:
a gas suction channel having one end disposed in the abdominal cavity;
a gas reservoir connected to the other end of the gas suction path,
A gas removal system for laparoscopic surgery, wherein gas in the abdominal cavity is sucked through the gas suction path and then stored in the gas storage section. 2. The gas for laparoscopic surgery according to claim 1, wherein the gas suction path is provided with a pump section for sucking intraperitoneal gas, and suction operation of the pump section suctions intraperitoneal gas through the gas suction path. removal system. 2. The gas reservoir according to claim 1, wherein the inside of said gas reservoir is in a lower pressure state or a vacuum state than the pressure in the abdominal cavity, and the gas in the abdominal cavity is sucked through said gas suction path by the low pressure state or vacuum state of said gas reservoir. gas removal system for laparoscopic surgery. The gas reservoir includes at least one adsorbent selected from silica gel, alumina, activated carbon, and zeolite, and a gas reservoir containing the adsorbent, the gas reservoir containing the gas suction path. 4. The gas removal system for laparoscopic surgery according to any one of claims 1 to 3, which is detachably provided in the laparoscopic surgery. The gas removal system for laparoscopic surgery according to any one of claims 1 to 4, wherein the inside of the gas reservoir is in a vacuum state and is set to a temperature of 50°C to 70°C. 6. The gas removal system for laparoscopic surgery according to any one of claims 1 to 5, wherein the gas suction path is provided with a gas-liquid separation section for separating sucked gas and liquid. The gas for laparoscopic surgery according to any one of claims 1 to 6, wherein the gas suction path is provided with an adsorption portion that adsorbs moisture and/or impurities contained in the gas sucked from the abdominal cavity. removal system. The adsorption section includes at least one type of adsorbent selected from silica gel, alumina, activated carbon, and zeolite, and an adsorption section container that accommodates the adsorbent in a sealed state, and the adsorption section container includes the gas suction path. 8. The gas removal system for laparoscopic surgery according to claim 7, which is detachably provided with respect to. 9. The gas removal system for laparoscopic surgery according to claim 8, wherein the adsorption section has a plurality of layers of adsorbents of at least two kinds of silica gel, alumina, activated carbon, and zeolite from the suction side to the discharge side. 10. The gas removal system for laparoscopic surgery according to claim 9, wherein the adsorbents are arranged such that the adsorbent in each layer adsorbs less water than the adsorbent in the previous layer. 11. The apparatus for laparoscopic surgery according to claim 10, wherein the adsorption part is provided with silica gel, alumina or activated carbon as a first layer of adsorbent on the suction side, and zeolite as a second layer of adsorbent following the first layer. gas removal system. The adsorption part is provided with silica gel as an adsorbent for the first layer on the suction side, alumina or activated carbon as an adsorbent for the second layer following the first layer, and zeolite as an adsorbent for the third layer following the second layer. The gas removal system for laparoscopic surgery according to claim 10. The adsorption part includes silica gel as the adsorbent for the first layer on the suction side, alumina as the adsorbent for the second layer following the first layer, activated carbon as the adsorbent for the third layer following the second layer, and following the third layer. 11. The gas removal system for laparoscopic surgery according to claim 10, wherein zeolite is provided as the fourth layer of adsorbent. The inside of the adsorption unit container is partitioned into a plurality of partitioned chambers through communication holes, each partitioned chamber contains an adsorbent made of the same or different material, and the gas suction path is provided in the partitioned chamber on the gas suction side. 9. The gas for laparoscopic surgery according to claim 8, wherein the suction side end of the gas suction passage is detachably connected to the compartment on the gas discharge side, and the discharge side end of the gas suction passage is detachably connected to the compartment on the gas discharge side. removal system. The container for the adsorption section has a communication hole provided in the upper part of the partitioned chamber, the suction side end of the gas suction path is detachably connected to the lower part of the partitioned chamber on the gas suction side, and the gas discharge side. 15. The gas removal system for laparoscopic surgery according to claim 14, wherein the discharge side end of said gas suction path is detachably connected to the lower part of said compartment. 16. The adsorbent container according to claim 15, wherein a filter is provided in a lower region where the suction side end and the discharge side end of the gas suction path in the partitioned chamber are connected, and the adsorbent is arranged above the filter. A gas removal system for laparoscopic surgery as described. a gas supply line having one end disposed in the abdominal cavity and the other end connected to a gas cylinder for supplying gas by a pneumoperitoneum device;
a gas circulation path having one end connected to the gas suction path and the other end connected to the gas supply path;
In the gas suction path, an on-off valve provided on the gas reservoir side of the connection portion between the gas suction path and the gas circulation path,
When the on-off valve is opened, gas in the abdominal cavity is delivered to the gas reservoir through the gas suction path, while when the on-off valve is closed, gas in the abdominal cavity is released into the gas aspiration path and the gas circulation path. 17. The gas removal system for laparoscopic surgery according to any one of claims 1 to 16, wherein the gas is delivered to the gas supply line through.

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