Endoscope system

Abstract

To provide a multi-functional endoscope system.SOLUTION: An endoscope system 100 comprises an endoscope insertion part 20, an operation part 70, and an additional mechanism 300. A portion (a disposable portion 200) including the endoscope insertion part 20 is disposable. The additional mechanism 300 includes at least one of an external cylinder 10 and a sensor. The external cylinder 10 has a first insertion path with the endoscope insertion part 20 inserted thereto. The sensor is installed at the endoscope insertion part 20 or the external cylinder 10. The sensor detects data on an external situation of the endoscope insertion part 20.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to an endoscope system.

Background Art

[0002] Conventionally, an endoscope system provided with a pressure sensor capable of directly measuring the pressure inside the abdominal cavity is known (see, for example, Japanese Patent Application Laid-Open No. 2015-150154).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above-described conventional endoscope system, an endoscope hood provided with a pressure sensor was installed at the tip of the endoscope insertion portion inserted into the abdominal cavity. In the endoscope hood, a wiring is connected to the pressure sensor. The wiring is connected to an external device along the outer peripheral surface of the endoscope insertion portion. In the external device, the pressure inside the abdominal cavity detected by the pressure sensor is displayed.

[0005] However, in an endoscope system, not only detection of the pressure inside the abdominal cavity as described above, but also further multifunctionalization for reducing the burden on a user (doctor) who operates the endoscope system during surgery is required.

[0006] Therefore, an object of the present disclosure is to provide a multifunctional endoscope system.

Means for Solving the Problems

[0007] The endoscope system according to the present disclosure includes an endoscope insertion portion and an additional mechanism. The endoscope insertion portion is inserted into the body. The portion including the endoscope insertion portion is disposable. The additional mechanism includes at least one of an outer cylinder and a sensor. The outer cylinder has a first insertion passage. The endoscope insertion portion is inserted through the first insertion passage. The sensor detects data regarding the situation outside the endoscope insertion portion. The sensor is installed on either the endoscope insertion portion or the outer cylinder.

[0008] The endoscope system according to the present disclosure includes an endoscope insertion portion and an additional mechanism. The endoscope insertion portion is inserted into the body. The additional mechanism includes at least one of an outer cylinder and a sensor. The outer cylinder has a first insertion passage. The endoscope insertion portion is inserted through the first insertion passage. The sensor detects data regarding the situation outside the endoscope insertion portion. The sensor is installed on either the endoscope insertion portion or the outer cylinder. When the additional mechanism includes the outer cylinder, the diameter of the endoscope insertion portion is 6 mm or less. The outer cylinder is rotatable relative to the endoscope insertion portion. The outer cylinder has a second insertion passage for inserting a treatment tool. The outer diameter of the outer cylinder is 10 mm or less. When the additional mechanism includes the sensor, the endoscope insertion portion includes an objective lens disposed on the end face on the tip side. The sensor is installed at a position adjacent to the objective lens on the end face on the tip side of the outer cylinder or on the end face on the tip side of the endoscope insertion portion.

Effect of the Invention

[0009] According to the present disclosure, a multifunctional endoscope system can be obtained.

Brief Description of the Drawings

[0010]

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Embodiments for Carrying Out the Invention

[0011] Hereinafter, embodiments of the present disclosure will be described. Unless otherwise specified, the same or corresponding parts in the following drawings are denoted by the same reference numerals, and the description thereof will not be repeated.

[0012] (Embodiment 1) <Configuration of Endoscope System> FIG. 1 is a schematic diagram showing the configuration of an endoscope system according to Embodiment 1. As shown in FIG. 1, the endoscope system 100 includes a disposable portion 200. Specifically, the endoscope system 100 mainly includes an outer cylinder 10 as an additional mechanism 300, an endoscope insertion portion 20, an operation portion 70, a connection portion 80, and a system main body portion 90. The disposable portion 200 is constituted by the outer cylinder 10, the endoscope insertion portion 20, the operation portion 70, and the connection portion 80. The detailed structures of the endoscope insertion portion 20 and the outer cylinder 10 will be described later.

[0013] The operation portion 70 is connected to the endoscope insertion portion 20. Specifically, the operation portion 70 is connected to the base side opposite to the distal end side of the endoscope insertion portion 20. The operation portion 70 is a device portion for the user of the endoscope system 100 to grip and operate the endoscope insertion portion 20. The operation portion 70 is provided with a mechanism for the user to operate, such as buttons or switches (not shown).

[0014] The connection portion 80 is connected to the operation portion 70. The connection portion 80 connects the system main body portion 90 and the operation portion 70.

[0015] The system main body portion 90 mainly includes a main body portion 91 including an image system, a light source device, etc., and a display portion 92. As the display portion 92, a display device such as a liquid crystal display can be used, for example. In the endoscope system 100 shown in FIG. 1, the display portion 92 is connected to the upper portion of the main body portion 91. Note that the arrangement of the display portion 92 with respect to the main body portion 91 may be other arrangements. The connection portion 80 is connected to the main body portion 91. An image captured through an objective lens 21 (see FIG. 3) disposed at the distal end portion of the endoscope insertion portion 20 is input to the main body portion 91 through the operation portion 70 and the connection portion 80. The image is displayed on the display portion 92.

[0016] As described above, the endoscopic system 100 includes a disposable portion 200 that includes the outer tube 10 and the endoscopic insertion portion 20. General endoscopes are reused multiple times by performing sterilization treatment, but the disposable portion 200 that includes the outer tube 10 and the endoscopic insertion portion 20 is discarded after being used once. Therefore, with regard to the materials and structure that make up the disposable portion 200, sterilization treatment is not performed multiple times, and durability to withstand multiple uses is not essential either. Therefore, the degree of freedom in the design of the materials and structure that make up the disposable portion 200 can be increased. That is, materials and structures that cannot withstand multiple uses but can be used for a single use can be applied to the disposable portion 200.

[0017] FIG. 2 is a schematic diagram showing the outer tube of the endoscopic system according to Embodiment 1. FIG. 3 is a schematic diagram showing the distal end portion of the endoscopic system according to Embodiment 1. As shown in FIGS. 1 to 3, the endoscopic system 100 includes an endoscopic insertion portion 20 and an outer tube 10.

[0018] The outer tube 10 has a first insertion passage 11 and a second insertion passage 12. The endoscopic insertion portion 20 is inserted through the first insertion passage 11. As will be described later, a treatment tool 40 (see FIG. 4) such as forceps is inserted through the second insertion passage 12. The outer diameter R2 of the outer tube 10 is 10 mm or less. Here, the outer diameter R2 of the outer tube 10 means the outer diameter at the distal end portion 10b of the outer tube 10.

[0019] As the material of the outer tube 10, any material can be used as long as it is a flexible material used for medical instruments. For example, a soft resin can be used as the material of the outer tube 10. As the resin, for example, polyvinyl chloride, polyethylene, polyester, polyurethane, polyamide, etc. can be adopted.

[0020] The surface of the outer tube 10 may be hydrophilically coated so that friction in the body is reduced. Examples of the material used for the hydrophilic coating include polyvinylpyrrolidone (PVP), maleic anhydride, etc.

[0021] The thickness of the wall portion including the outer peripheral surface of the outer cylinder 10 (the thickness of the wall portion in the direction orthogonal to the extending direction of the outer cylinder 10) is, for example, 1 mm or more and 3 mm or less. The thickness of the wall portion may be 1.5 mm or more and 2.5 mm or less. The diameter of the first insertion passage 11 may be equal to or greater than the diameter R1 of the endoscope insertion portion 20. For example, the diameter of the first insertion passage 11 may be 6.1 mm or less. The diameter of the second insertion passage 12 may be less than the thickness of the wall portion of the outer cylinder 10. In the outer cylinder 10 shown in FIG. 2, the number of the second insertion passages 12 is 1, but the number of the second insertion passages 12 may be two or more. The first insertion passage 11 and the second insertion passage 12 extend from the base portion 10a to the tip portion 10b of the outer cylinder 10.

[0022] The diameter R1 of the endoscope insertion portion 20 is 6 mm or less. The endoscope insertion portion 20 shown in FIG. 3 has an objective lens 21, an illumination unit 22, and an instrument insertion passage 23. The objective lens 21 and the illumination unit 22 are installed at the tip portion of the endoscope insertion portion 20. The opening of the instrument insertion passage 23 is formed in the end face located at the tip portion of the endoscope insertion portion 20. As the endoscope insertion portion 20, an endoscope insertion portion 20 having an arbitrary configuration can be used as long as its diameter R1 is 6 mm or less. An instrument 50 (see FIG. 4) such as an electric scalpel is inserted into the instrument insertion passage 23 of the endoscope insertion portion 20.

[0023] In the endoscope system 100 in which the endoscope insertion portion 20 is inserted into the first insertion passage 11, it is preferable to adjust the hardness of the material constituting the outer cylinder 10, the thickness of the wall portion, etc. so that the operability of the endoscope system 100 is comparable to that of a conventional endoscope (for example, an oral endoscope) having a diameter of about 10 mm.

[0024] <Operation of the endoscope system> The outer cylinder 10 is rotatable relative to the endoscope insertion portion 20. For example, the user can hold the base portion 10a of the outer cylinder 10 and rotate only the outer cylinder 10 while maintaining the posture of the endoscope insertion portion 20. Hereinafter, it will be described with reference to FIGS. 4 and 5. FIGS. 4 and 5 are schematic diagrams for explaining the operation of the endoscope system shown in FIGS. 1 to 3.

[0025] As shown in FIG. 4, a forceps as a treatment instrument 40 is inserted into the second insertion passage 12 in the outer cylinder 10 of the endoscope system 100. An electric scalpel as a treatment instrument 50 is inserted into the treatment instrument insertion passage 23 of the endoscope insertion portion 20. In the state shown in FIG. 4, the electric scalpel as the treatment instrument 50 and the forceps as the treatment instrument 40 are close to each other. Then, by rotating only the outer cylinder 10 as shown by the arrow in FIG. 4, the distance between the electric scalpel as the treatment instrument 50 and the forceps as the treatment instrument 40 can be increased as shown in FIG. 5. For example, in the state of FIG. 4, the treatment target tissue such as the gastrointestinal mucosa is grasped by the forceps, and then only the outer cylinder 10 is rotated as shown by the arrow to obtain the state of FIG. 5. As a result, by maintaining the posture of the endoscope insertion portion 20, the field of view is fixed, and the tissue (treatment target tissue) in the body can be pulled by the forceps to realize a state in which tension is applied to the tissue. In this state, treatments such as excising the tissue with the electric scalpel can be easily performed.

[0026] <Function> The endoscope system 100 according to the present disclosure includes an endoscope insertion portion 20, an operation portion 70, and an additional mechanism 300. A portion including the endoscope insertion portion 20 (disposable portion 200) is disposable. The additional mechanism 300 includes at least one of the outer cylinder 10 and the sensor 25 (see FIG. 11 or FIG. 14). The outer cylinder 10 has a first insertion passage 11 through which the endoscope insertion portion 20 is inserted. The sensor 25 is installed on either the endoscope insertion portion 20 or the outer cylinder 10. The sensor 25 detects data related to the external situation of the endoscope insertion portion 20. Also, from a different perspective, the above-described endoscope system 100 is an endoscope system in which a portion including the endoscope insertion portion 20 inserted into the body is disposable.

[0027] By doing so, a multifunctional endoscope system 100 can be realized by installing at least one of the above-described outer cylinder 10 and sensor 25 in the endoscope system 100. Further, by disposing an additional mechanism 300 such as the above-described outer cylinder 10 or sensor 25 in a portion (disposable portion 200) including the disposable endoscope insertion portion 20, it is not necessary to consider durability with respect to the sterilization and cleaning process for reuse regarding the material and structure constituting the additional mechanism 300. Therefore, the degree of freedom regarding the material and structure of the additional mechanism 300 can be increased.

[0028] In the endoscope system 100, the additional mechanism 300 includes the outer cylinder 10. The diameter R1 of the endoscope insertion portion 20 is 6 mm or less. The outer cylinder 10 is rotatable relative to the endoscope insertion portion 20. The outer cylinder 10 has a second insertion passage 12 for inserting the treatment instrument 40 therethrough. The outer diameter R2 of the outer cylinder 10 is 10 mm or less.

[0029] By doing so, the outer diameter R2 of the endoscope system 100 with the outer cylinder 10 attached to the endoscope insertion portion 20 can be made approximately the same as the outer diameter of the insertion portion of a general conventional oral endoscope. Therefore, in an examination or surgery using the endoscope system 100, the occurrence of an excessive burden on the subject can be suppressed. Further, by adjusting the material of the outer cylinder 10 and the like, the operability of the endoscope system 100 can be made equivalent to the operability of a conventional oral endoscope.

[0030] In addition, by using such an endoscope system 100, a treatment instrument 40 such as a forceps is inserted into the second insertion passage 12 of the outer cylinder 10, the tissue in the body is grasped by the treatment instrument 40, and the outer cylinder 10 is rotated, so that tension can be applied to the tissue. Since the outer cylinder 10 rotates along the outer periphery of the endoscope insertion portion 20, the direction in which tension is applied to the tissue intersects with the extending direction of the treatment instrument 50 such as an electric scalpel inserted into the treatment instrument insertion passage 23 of the endoscope insertion portion 20. Therefore, it is easy to adjust the position and posture of the tissue to be treated so as to facilitate the treatment with the treatment instrument 50 (electric scalpel) inserted into the treatment instrument insertion passage 23 of the endoscope insertion portion 20. As a result, the workability of the inspection and surgery using the endoscope system 100 can be improved.

[0031] <Configuration and Operation of the First Modification> FIG. 6 is a schematic cross-sectional view showing a first modification of the endoscope system shown in FIGS. 1 to 3. The endoscope system 100 shown in FIG. 6 basically has the same configuration as the endoscope system 100 shown in FIGS. 1 to 3 and can obtain the same effects. However, a lubricant 31 is disposed between the inner peripheral surface in the first insertion passage 11 of the outer cylinder 10 and the endoscope insertion portion 20, and a lubricant supply passage 32 for supplying the lubricant 31 into the first insertion passage 11 is formed in the outer cylinder 10. These points are different from the endoscope system 100 shown in FIGS. 1 to 3. Specific description will be given below.

[0032] In the endoscope system 100 shown in FIG. 6, a lubricant supply passage 32 as an auxiliary mechanism 30 is formed in the outer cylinder 10. The lubricant supply passage 32 has an opening at the base portion 10a of the outer cylinder 10. The lubricant supply passage 32 includes a main pipe portion 32b extending from the opening 32a of the base portion 10a toward the distal end portion 10b, and a branch pipe portion 32c extending from the main pipe portion 32b toward the first insertion passage 11. The distal end portion of the branch pipe portion 32c reaches the inner peripheral surface of the first insertion passage 11. That is, the branch pipe portion 32c is connected to the first insertion passage 11. As shown in FIG. 6, a plurality of branch pipe portions 32c may be connected to the main pipe portion 32b. A plurality of lubricant supply passages 32 may be formed at intervals in the circumferential direction of the outer cylinder 10.

[0033] A lubricant supply part (not shown) is connected to the opening 32a of the lubricant supply passage 32. Lubricant 31 as the auxiliary mechanism 30 is supplied from the lubricant replenishing part through the opening 32a to the lubricant supply passage 32. The lubricant 31 is supplied into the first insertion passage 11 from the end of the branch pipe part 32c of the lubricant supply passage 32.

[0034] Summarizing the characteristic configuration of the endoscope system 100 shown in FIG. 6, the endoscope system 100 includes an auxiliary mechanism 30. The auxiliary mechanism 30 assists the outer cylinder 10 to rotate relative to the endoscope insertion part 20. In this case, with the posture of the endoscope insertion part 20 fixed (that is, with the field of view of the image captured by the endoscope insertion part 20 fixed), the outer cylinder 10 can be easily rotated. Therefore, the operability of the endoscope system 100 can be improved.

[0035] In the above endoscope system 100, the auxiliary mechanism 30 includes lubricant 31. The lubricant 31 is disposed between the endoscope insertion part 20 and the inner peripheral surface of the first insertion passage 11. In this case, the outer cylinder 10 can be easily rotated relative to the endoscope insertion part 20.

[0036] In the above endoscope system 100, the outer cylinder 10 has a lubricant supply passage 32 which is a supply passage for supplying the lubricant 31 to the first insertion passage 11. In this case, the lubricant 31 can be reliably supplied between the inner peripheral surface of the first insertion passage 11 and the endoscope insertion part 20. Therefore, the outer cylinder 10 can be easily rotated relative to the endoscope insertion part 20.

[0037] <Configuration and Operation of the Second Modified Example> FIG. 7 is a schematic cross-sectional view showing a second modified example of the endoscope system shown in FIGS. 1 to 3. The endoscope system 100 shown in FIG. 7 basically has the same configuration as the endoscope system 100 shown in FIGS. 1 to 3 and can obtain the same effects. However, a driving member 33 as an auxiliary mechanism 30 is arranged on the tip 10b side of the outer cylinder 10, and a control unit 35 as an auxiliary mechanism 30 is arranged at the base 10a of the outer cylinder 10, which is different from the endoscope system 100 shown in FIGS. 1 to 3. This will be specifically described below.

[0038] In the endoscope system 100 shown in FIG. 7, the driving member 33 is arranged at the tip 10b of the outer cylinder 10 so as to face the first insertion passage 11. A part of the driving member 33 is arranged so as to protrude from the inner peripheral surface of the first insertion passage 11. The above-mentioned part of the driving member 33 is in contact with the surface of the endoscope insertion portion 20. The driving member 33 is, for example, a motor. The portion of the driving member 33 that contacts the endoscope insertion portion 20 is a rotating portion connected to the rotating shaft of the motor. By rotating the rotating shaft of the motor that is the driving member 33, a driving force can be generated to relatively rotate the outer cylinder 10 with respect to the endoscope insertion portion 20. Note that, as long as the configuration of the driving member 33 can generate a driving force for rotating the outer cylinder 10 relative to the endoscope insertion portion 20, any configuration can be adopted.

[0039] The control unit 35 is connected to the driving member 33 as an auxiliary mechanism 30 via a wiring 34. The control unit 35 transmits a control signal to the driving member 33 via the wiring 34. The control unit 35 may supply power to the driving member 33 via the wiring 34. The control unit 35 includes a switch unit (not shown). By the user operating the switch unit, it may be possible to start and stop the relative rotational movement of the outer cylinder 10 with respect to the endoscope insertion portion 20 by the driving member 33, and further change the relative rotational direction of the outer cylinder 10. The above-described endoscope system 100 includes a driving member 33, a control unit 35, and a wiring 34 as an auxiliary mechanism 30. Note that the auxiliary mechanism 30 including the driving member 33, the control unit 35, and the wiring 34 shown in FIG. 7 may be added to the endoscope system 100 shown in FIG. 6.

[0040] Summarizing the characteristic configuration of the endoscope system 100 shown in FIG. 7, in the endoscope system 100, the auxiliary mechanism 30 includes a drive member 33. The drive member 33 generates an auxiliary driving force when the outer cylinder 10 rotates relative to the endoscope insertion portion 20. In this case, the outer cylinder 10 can be reliably rotated relative to the endoscope insertion portion 20 by the auxiliary driving force generated by the drive member 33.

[0041] <Configuration and Operation of the Third Modification Example> FIG. 8 is a schematic cross-sectional view showing a third modification example of the endoscope system shown in FIGS. 1 to 3. The endoscope system 100 shown in FIG. 8 basically has the same configuration as the endoscope system 100 shown in FIGS. 1 to 3 and can obtain the same effects, but is different from the endoscope system 100 shown in FIGS. 1 to 3 in that it is provided with a twist suppression mechanism 60 for suppressing twist when rotating the outer cylinder 10. This will be specifically described below.

[0042] In the endoscope system 100 shown in FIG. 8, a third insertion passage 14 extending from the base portion 10a to the tip portion 10b of the outer cylinder 10 is formed. A wire 61 is inserted into the third insertion passage 14. The material constituting the wire 61 is a material having a higher hardness than the material constituting the outer cylinder 10. The material constituting the wire 61 is, for example, metal. The third insertion passage 14 and the wire 61 constitute a twist suppression mechanism 60. By inserting the wire 61 into the third insertion passage 14, the rigidity of the outer cylinder 10 can be increased. Therefore, the twist of the outer cylinder 10 when rotating the outer cylinder 10 can be suppressed. Thus, when the outer cylinder 10 is rotated relative to the endoscope insertion portion 20, for example, when the user grips the base portion 10a of the outer cylinder 10 and rotates the outer cylinder 10, the tip portion 10b of the outer cylinder 10 can be rotated in synchronization with the base portion 10a.

[0043] Note that a plurality of third insertion passages 14 for inserting the wire 61 may be formed. By inserting the wire 61 into each of the plurality of third insertion passages 14, the rigidity of the outer cylinder 10 can be further enhanced. As a result, the distal end portion 10b of the outer cylinder 10 can be rotated in synchronization with the rotation of the base portion 10a. Note that the third insertion passage 14 and the wire 61 shown in FIG. 8 may be added to the endoscope system 100 shown in FIG. 6 or FIG. 7.

[0044] Summarizing the characteristic configuration of the endoscope system 100 shown in FIG. 8, the endoscope system 100 includes a twist suppression mechanism 60. The twist suppression mechanism 60 suppresses the twisting of the outer cylinder 10 when the outer cylinder 10 rotates relative to the endoscope insertion portion 20. In this case, when the outer cylinder 10 is rotated relative to the endoscope insertion portion 20, the twist suppression mechanism 60 can suppress the twisting of the outer cylinder 10, so that the operability when rotating the outer cylinder 10 can be improved.

[0045] <Configuration in which a disposable part is housed in a sterilization container> FIG. 9 is a schematic diagram showing a state in which the disposable part 200 of the endoscope system shown in FIGS. 1 to 3 is placed in a sterilization container. The endoscope system 100A shown in FIG. 9 mainly includes the disposable part 200 and the sterilization container 210 in the endoscope system 100 shown in FIGS. 1 to 3. The sterilization container 210 has an internal space 210a maintained in a sterilized state. The disposable part 200 is housed in the internal space 210a. The disposable part 200 mainly includes the endoscope insertion portion 20, the outer cylinder 10 as the additional mechanism 300, the operation portion 70, and the connection portion 80. The disposable part 200 housed in the internal space 210a of the sterilization container 210 has been sterilized.

[0046] As for the configuration of the sterilization container 210, any configuration can be adopted. For example, the sterilization container 210 may be formed using two sheet members. The sterilization container 210 may be formed by stacking two sheet members and fixing the outer peripheral portions of the stacked sheet members by any method such as adhesion or welding. In this case, the region surrounded by the two sheet members serves as the internal space 210a. Also, the disposable portion 200 accommodated in the sterilization container 210 may have the structure shown in FIGS. 6 to 8.

[0047] When using the endoscope system 100A shown in FIG. 9, the connection portion 80 of the disposable portion 200 taken out from the sterilization container is connected to the main body portion 91 of the system main body portion 90 as shown in FIG. 1. As a result, the endoscope system 100 shown in FIG. 1 is configured. The endoscope system 100 shown in FIG. 1 is used in the same manner as a normal endoscope system.

[0048] After using the endoscope system 100, the connection portion 80 of the disposable portion 200 is separated from the system main body portion 90. The disposable portion 200 separated from the system main body portion 90 is discarded as it is.

[0049] <Function> In the above endoscope systems 100 and 100A, at least the endoscope insertion portion 20 and the outer cylinder 10 as the additional mechanism 300 are discarded after being used once. In this case, by preparing the disposable portion 200 including the outer cylinder 10 and the endoscope insertion portion 20 in a pre-sterilized state and discarding it after use, the possibility of problems such as infectious diseases due to poor sterilization treatment can be suppressed compared to the case of sterilizing and reusing the portion. Also, since the disposable portion 200 is not reused, the structure and material of the endoscope insertion portion 20 and the outer cylinder 10 can be simplified compared to the case of reuse.

[0050] The above endoscope system 100A further includes an operation unit 70, a connection unit 80, and a sterilization container 210. The operation unit 70 is connected to the endoscope insertion unit 20. The connection unit 80 is connected to the operation unit 70. The connection unit 80 connects the system main body unit 90 (see FIG. 1) and the operation unit 70. The sterilization container 210 has an internal space 210a maintained in a sterilized state. The endoscope insertion unit 20, the outer cylinder 10 as an additional mechanism 300, the operation unit 70, and the connection unit 80 are accommodated in the internal space 210a.

[0051] In this case, the disposable part 200 composed of the endoscope insertion unit 20, the outer cylinder 10, the operation unit 70, and the connection unit 80 can be stored and transported in a sterilized state. Also, when using the disposable part 200, the sterilization container 210 is opened, the disposable part 200 is taken out from the internal space 210a, and it can be used immediately, so the working efficiency of the surgery using the endoscope system 100 can be improved.

[0052] Note that the above-mentioned disposable part 200 only needs to include at least the outer cylinder 10 and the endoscope insertion unit 20. For example, the disposable part 200 may be composed of the outer cylinder 10, the endoscope insertion unit 20, and the operation unit 70.

[0053] <Configuration and Operation of the Fourth Modification Example> FIG. 10 is a schematic diagram showing a fourth modification example of the endoscope system shown in FIGS. 1 to 3. The endoscope system 100 shown in FIG. 10 basically has the same configuration as the endoscope system 100 shown in FIGS. 1 to 3 and can obtain the same effects, but is different from the endoscope system 100 shown in FIGS. 1 to 3 in that the endoscope insertion unit 20, the outer cylinder 10, the operation unit 70, and the connection unit 80 are not disposable parts. This will be specifically described below.

[0054] In the endoscope system 100 shown in FIG. 10, the portion including the endoscope insertion section 20 is not disposable. In the endoscope system 100 shown in FIG. 10, the endoscope insertion section 20 is cleaned and disinfected after use and reused. That is, the endoscope insertion section 20 in the endoscope system 100 shown in FIG. 10 is reusable. Even if the outer cylinder 10 is applied to the endoscope system 100 having such a configuration, the same effects as those of the endoscope system 100 shown in FIGS. 1 to 3 can be obtained. Note that, as the configuration of the outer cylinder 10, any of the configurations of the outer cylinder 10 shown in FIGS. 2 to 8 can be adopted.

[0055] Summarizing the characteristic configuration of the endoscope system 100 shown in FIG. 10, the endoscope system 100 includes an endoscope insertion section 20 to be inserted into the body, an operation section 70 connected to the endoscope insertion section 20, and an additional mechanism 300. The additional mechanism 300 includes at least one of an outer cylinder 10 and a sensor 25 (see FIGS. 11 to 21). The outer cylinder 10 has a first insertion passage 11 through which the endoscope insertion section 20 is inserted. The sensor 25 is installed in either the endoscope insertion section 20 or the outer cylinder 10. The sensor 25 detects data regarding the external situation of the endoscope insertion section 20. As shown in FIG. 10, when the additional mechanism 300 includes the outer cylinder 10, the diameter of the endoscope insertion section 20 is 6 mm or less. The outer cylinder 10 is rotatable relative to the endoscope insertion section 20. The outer cylinder 10 has a second insertion passage 12 for inserting a treatment instrument. The outer diameter of the outer cylinder 10 is 10 mm or less. In this case, similar to the endoscope system 100 shown in FIGS. 1 to 3, the outer diameter R2 of the endoscope system 100 with the outer cylinder 10 attached to the endoscope insertion section 20 can be made comparable to the outer diameter of the insertion section of a general conventional oral endoscope. Therefore, in an examination or surgery using the endoscope system 100, the occurrence of an excessive burden on the subject can be suppressed.

[0056] (Embodiment 2) <Configuration of Endoscope System> FIG. 11 is a schematic diagram showing the configuration of the endoscope system according to Embodiment 2. FIG. 12 is a schematic diagram showing the tip of the endoscope system shown in FIG. 11. The endoscope system 100 shown in FIG. 11 basically has the same configuration as the endoscope system 100 shown in FIGS. 1 to 3 and can obtain the same effects, but it does not include the outer cylinder 10 (see FIG. 1), and is different from the endoscope system 100 shown in FIGS. 1 to 3 in that it includes a smoke sensor 25a as an additional mechanism 300. This will be specifically described below.

[0057] In the endoscope system 100 shown in FIGS. 11 and 12, a smoke sensor 25a as a sensor 25 is installed at the tip of the endoscope insertion portion 20. The smoke sensor 25a corresponds to the additional mechanism 300. The smoke sensor 25a measures data indicating whether or not the atmosphere around the endoscope insertion portion 20 (especially the tip portion) in the endoscope system 100 contains smoke as data on the external situation of the endoscope system 100. By providing the smoke sensor 25a, the generation of smoke near the tip of the endoscope insertion portion 20 can be easily detected during surgery using the endoscope system 100.

[0058] As shown in FIG. 12, the smoke sensor 25a is installed at the tip of the endoscope insertion portion 20. The smoke sensor 25a is installed at a position adjacent to the objective lens 21 on the end face of the tip of the endoscope insertion portion 20. Note that being installed at a position adjacent to the objective lens 21 means that the smoke sensor 25a is installed in a region within 5 mm from the objective lens 21, for example. In this case, the presence of smoke in the vicinity of the objective lens 21 can be detected. Note that the installation position of the smoke sensor 25a may be the central portion of the end face. Alternatively, the installation position of the smoke sensor 25a may be the outer peripheral portion on the end face of the tip of the endoscope insertion portion 20. Also, the smoke sensor 25a may be arranged at a position adjacent to the illumination unit 22. The smoke sensor 25a only needs to be installed on the end face of the tip of the endoscope insertion portion 20. Alternatively, the smoke sensor 25a may be installed on the outer peripheral side surface of the tip of the endoscope insertion portion 20.

[0059] As the smoke sensor 25a, for example, a semiconductor gas sensor can be used. As the smoke sensor 25a, a gas sensor capable of detecting some of the multiple types of gases constituting the smoke may be used. As the smoke sensor 25a, sensors with any other configuration can be adopted.

[0060] The endoscope system 100 shown in FIGS. 11 and 12 may be configured to automatically suck smoke from the vicinity of the distal end of the endoscope insertion portion 20 when the smoke sensor 25a detects smoke. By adjusting the detection sensitivity of the smoke sensor 25a, it is preferable to detect smoke with the smoke sensor 25a at the stage when a very small amount of smoke that cannot be visually confirmed is generated in the vicinity of the distal end of the endoscope insertion portion 20. In this way, it is possible to surely prevent the visual field from being blocked by the smoke. For example, when the smoke sensor 25a detects smoke, the ambient gas near the distal end of the endoscope insertion portion 20 is sucked together with the smoke through a suction port (not shown) or the treatment tool insertion passage 23. At this time, it is preferable to supply a gas such as carbon dioxide gas into the body cavity so that the pressure in the body cavity into which the endoscope insertion portion 20 is inserted does not decrease excessively. Such gas supply may also be automatically performed according to the detection of smoke by the smoke sensor 25a and the suction of smoke. After that, when the smoke sensor 25a no longer detects smoke, the suction of smoke is stopped. When gas supply is also being performed during the suction of smoke, after the smoke sensor 25a no longer detects smoke, the suction of smoke and the gas supply are stopped. In this way, in the endoscope system 100 shown in FIGS. 11 and 12, based on the detection result of smoke by the smoke sensor 25a, the start and end of the process of sucking the ambient gas near the distal end of the endoscope insertion portion 20 and the process of supplying gas into the body cavity may be automatically performed. The endoscope system 100 may include a smoke sensor 25a, a suction mechanism including a pump for sucking the ambient gas, etc., and a control unit connected to a supply mechanism for supplying gas into the body cavity in order to perform the above automatic control. The control unit may be installed, for example, in the disposable portion 200 or in the main body portion 91.

[0061] FIG. 13 is a schematic diagram showing the tip of a modified example of the endoscope system 100 shown in FIG. 10. The endoscope system 100 shown in FIG. 13 basically has the same configuration as the endoscope system 100 shown in FIGS. 11 and 12 and can obtain the same effects, but is different from the endoscope systems shown in FIGS. 11 and 12 in that it includes a plurality of sensors 25 as an additional mechanism 300.

[0062] In the endoscope system 100 shown in FIG. 13, a first smoke sensor 25a is installed on the end face of the tip of the endoscope insertion portion 20, and a second smoke sensor 25b is installed on the outer peripheral side surface of the endoscope insertion portion 20. The smoke sensor 25b is installed on the outer peripheral side surface of the endoscope insertion portion 20. The smoke sensor 25b is in a state of being embedded in the outer peripheral side surface of the endoscope insertion portion 20. The surface of the smoke sensor 25b and the outer peripheral side surface of the endoscope insertion portion 20 are substantially flush. Note that the surface of the smoke sensor 25b may be disposed inside the outer peripheral side surface of the endoscope insertion portion 20. Further, the smoke sensor 25b is also disposed so as to protrude from the end face of the tip of the endoscope insertion portion 20. The smoke sensor 25b is disposed at the connection portion with the end face of the tip on the outer peripheral side surface of the endoscope insertion portion 20. Note that the second smoke sensor 25b may be installed on the end face of the tip of the endoscope insertion portion 20.

[0063] As shown in FIG. 13, one smoke sensor 25b may be arranged, or a plurality of two or more smoke sensors 25b may be arranged. For example, a plurality of smoke sensors 25b may be arranged at intervals in the circumferential direction of the outer peripheral side surface of the endoscope insertion portion 20. Further, a plurality of smoke sensors 25b may be arranged along the extending direction of the endoscope insertion portion 20 on the outer peripheral side surface. Further, each of the plurality of smoke sensors 25a and 25b may be a sensor that detects a different gas. Thus, the smoke sensors 25a and 25b may measure any data such as the presence or absence of smoke, the type of components contained in the smoke, the concentration of the component, the presence or absence of at least one of the plurality of components contained in the smoke, and the concentration of the one component, as data indicating the smoke contained in the atmosphere around the endoscope insertion portion 20 in the endoscope system.

[0064] FIG. 14 is a schematic diagram showing a state in which a disposable portion of the endoscope system shown in FIG. 11 is placed in a sterilization container. FIG. 14 corresponds to FIG. 9. The endoscope system 100A shown in FIG. 14 mainly includes a disposable portion 200 and a sterilization container 210 in the endoscope system 100 shown in FIGS. 11 and 12. The sterilization container 210 has an internal space 210a maintained in a sterilized state. The disposable portion 200 is housed in the internal space 210a. The disposable portion 200 mainly includes an endoscope insertion portion 20 in which a smoke sensor 25a is installed, an operation portion 70, and a connection portion 80. The disposable portion 200 housed in the internal space 210a of the sterilization container 210 is sterilized. The method of using the endoscope system 100A shown in FIG. 14 is basically the same as the method of using the endoscope system 100A shown in FIG. 9.

[0065] <Function> In the above endoscope systems 100 and 100A, the additional mechanism 300 is the sensor 25. The sensor 25 measures data indicating smoke contained in the atmosphere around the endoscope system 100 as data. That is, the sensors 25 are the smoke sensors 25a and 25b. In this case, when using the endoscope system 100, it is possible to easily detect whether there is smoke around the endoscope system 100, more specifically, near the distal end portion of the endoscope insertion portion 20. Further, since the smoke sensors 25a and 25b are installed in the disposable portion 200, they are not reused. For this reason, the smoke sensors 25a and 25b do not need to have durability that can withstand sterilization treatment. For this reason, the degree of freedom in the structure of the smoke sensors 25a and 25b can be increased.

[0066] <Configuration and operation of modified example> FIG. 15 is a schematic diagram showing a modified example of the endoscope system shown in FIGS. 11 and 12. The endoscope system 100 shown in FIG. 15 basically has the same configuration as the endoscope system 100 shown in FIGS. 11 and 12 and can obtain the same effects, but is different from the endoscope system 100 shown in FIGS. 11 and 12 in that the endoscope insertion portion 20, the operation portion 70, and the connection portion 80 are not disposable portions. This will be specifically described below.

[0067] In the endoscope system 100 shown in FIG. 15, the portion including the endoscope insertion section 20 is not disposable. In the endoscope system 100 shown in FIG. 15, the endoscope insertion section 20 is cleaned, disinfected, and reused after use. That is, the endoscope insertion section 20 in the endoscope system 100 shown in FIG. 15 is reusable. The smoke sensor 25a is installed at a position on the end face on the distal end side of the endoscope insertion section 20 adjacent to the objective lens 21, similar to the endoscope system 100 shown in FIG. 12.

[0068] Even if the smoke sensor 25a as the sensor 25 is applied to the endoscope system 100 having such a configuration, the same effects as those of the endoscope systems 100 shown in FIGS. 11 and 12 can be obtained. In the endoscope system 100 shown in FIG. 15, the smoke sensor 25a may be detachably installed with respect to the endoscope insertion section 20. In this case, even if the smoke sensor 25a malfunctions when the endoscope insertion section 20 is cleaned and disinfected, only the smoke sensor 25a can be replaced.

[0069] Also, in the endoscope systems 100 shown in FIGS. 11 to 15, the smoke sensor 25a may include a wireless module so as to be able to wirelessly transmit data indicating that smoke has been detected. Furthermore, the smoke sensor 25a may include a power source such as a battery. In this case, since it is not necessary to connect a power line or a wiring for transmitting data to the smoke sensor 25a, the device configuration of the endoscope system 100 can be simplified.

[0070] Note that the endoscope systems 100 shown in FIGS. 11 to 15 may include the outer cylinder 10 shown in FIGS. 1 to 3. In this case, the smoke sensor 25a as the sensor 25 may be installed on the end face on the distal end side of the endoscope insertion section 20, or may be installed on the end face on the distal end side of the outer cylinder 10. Alternatively, the smoke sensor 25a as the sensor 25 may be installed on the outer peripheral side surface of the corresponding 10.

[0071] Summarizing the characteristic configuration of the endoscope system 100 shown in FIG. 15, the endoscope system 100 includes an endoscope insertion portion 20 inserted into the body, an operation portion 70 connected to the endoscope insertion portion 20, and an additional mechanism 300. The additional mechanism 300 includes at least one of an outer cylinder 10 and a sensor 25 (see FIGS. 11 to 19). When the additional mechanism 300 includes the sensor 25, the endoscope insertion portion 20 includes an objective lens 21 disposed on the end face at the distal end portion. The sensor 25 is installed at a position adjacent to the objective lens 21 on the end face on the distal end side of the outer cylinder 10 or on the end face on the distal end side of the endoscope insertion portion 20. In this case, similar to the endoscope system 100 shown in FIGS. 11 and 12, a multifunctional endoscope system 100 can be obtained.

[0072] (Embodiment 3) <Configuration of Endoscope System> FIG. 16 is a schematic diagram showing the configuration of the endoscope system according to Embodiment 3. FIG. 17 is a schematic diagram showing the distal end portion of the endoscope system shown in FIG. 16. The endoscope system 100 shown in FIG. 16 basically has the same configuration as the endoscope system 100 shown in FIGS. 11 and 12 and can obtain the same effects, but is different from the endoscope system 100 shown in FIGS. 10 and 11 in that it includes a pressure sensor 25c as the additional mechanism 300. This will be specifically described below.

[0073] In the endoscope system 100 shown in FIGS. 16 and 17, a pressure sensor 25c as a sensor 25 is installed at the tip of the endoscope insertion portion 20. The pressure sensor 25c corresponds to the additional mechanism 300. The pressure sensor 25c measures data on the pressure in the atmosphere around the endoscope insertion portion 20 (particularly the tip) in the endoscope system 100 as data on the external situation of the endoscope system 100. By providing the pressure sensor 25c, it is possible to easily detect the atmospheric pressure in the body cavity into which the endoscope insertion portion 20 is inserted during the operation using the endoscope system 100. The endoscope system 100 includes a pressure display unit for the user to confirm the pressure detected by the pressure sensor 25c. The pressure display unit may be installed, for example, in the operation unit 70. Alternatively, the pressure display unit may be installed in the system main body unit 90. Further, the pressure display unit may be realized by displaying the value of the pressure on a part of the display screen for displaying the image captured by the endoscope on the display unit 92.

[0074] As shown in FIG. 17, the pressure sensor 25c is installed at the tip of the endoscope insertion portion 20. At least one pressure sensor 25c is installed in the endoscope insertion portion 20. The pressure sensor 25c is installed at the center of the end face at the tip of the endoscope insertion portion 20, but may be installed on the outer peripheral portion of the end face. In addition, in order to enable use even if one sensor fails, the number of pressure sensors 25c may be two or more. The pressure sensor 25c may be installed on the outer peripheral side surface of the tip of the endoscope insertion portion 20. As the pressure sensor 25c, a sensor of any configuration can be used, for example, a strain gauge type pressure sensor, a piezoelectric pressure sensor, etc. can be used.

[0075] Also, in the endoscope system 100 shown in FIGS. 16 and 17, as the sensor 25, a sensor of a type different from the pressure sensor 25c (for example, the smoke sensors 25a, 25b shown in FIGS. 11 to 13) may be installed in the endoscope insertion portion 20 together with the pressure sensor 25c.

[0076] FIG. 18 is a schematic diagram showing a state in which the disposable portion 200 of the endoscope system shown in FIG. 16 is placed in a sterilization container. FIG. 18 corresponds to FIG. 9. The endoscope system 100A shown in FIG. 18 mainly includes a disposable portion 200 and a sterilization container 210 in the endoscope system 100 shown in FIGS. 16 and 17. The sterilization container 210 has an internal space 210a maintained in a sterilized state. The disposable portion 200 is accommodated in the internal space 210a. The disposable portion 200 mainly includes an endoscope insertion portion 20 where a pressure sensor 25c is installed, an operation portion 70, and a connection portion 80. The disposable portion 200 accommodated in the internal space 210a of the sterilization container 210 has been sterilized. The usage method of the endoscope system 100A shown in FIG. 18 is basically the same as the usage method of the endoscope system 100A shown in FIG. 9.

[0077] <Function> In the above-described endoscope systems 100 and 100A, the additional mechanism 300 is the sensor 25. The sensor 25 measures, as data, the pressure data in the atmosphere around the endoscope insertion section 20. That is, the sensor 25 is the pressure sensor 25c. In this case, when using the endoscope system 100, it is possible to easily detect the pressure in the body cavity into which a part of the endoscope system 100, more specifically, the distal end portion of the endoscope insertion section 20 is inserted. When the pressure in the body cavity is detected by the pressure sensor 25c, the user of the endoscope system 100 can confirm the pressure. For example, by providing the endoscope systems 100 and 100A with a pressure display section that displays the value of the pressure detected by the pressure sensor 25c, the user of the endoscope systems 100 and 100A can easily confirm the pressure. Further, by detecting the pressure in the body cavity, it becomes possible to automatically control the pressure in the body cavity. That is, based on the pressure data detected by the pressure sensor 25c, by automatically supplying gas into the body cavity or sucking gas from the body cavity, the pressure in the body cavity can be maintained at a set value. The endoscope systems 100 and 100A may include a control section for performing the above-described control. The endoscope insertion section 20 may be formed with the above-described gas supply port and suction port. Alternatively, separately from the endoscope insertion section 20, a gas supply member and a gas suction member may be connected to the body cavity. In this case, based on the pressure data measured by the pressure sensor 25c, by controlling the supply member or the suction member, the pressure in the body cavity can be maintained at a set value.

[0078] The sensor 25 shown in FIGS. 11 to 17 described above may be applied to the endoscope systems 100 and 100A of the first embodiment. In this case, the sensor 25 may be installed in the endoscope insertion section 20 or may be installed in the outer cylinder 10 (see FIG. 2). When the sensor 25 is installed in the outer cylinder 10 shown in FIG. 2, the sensor 25 may be installed on the end face at the distal end portion 10b of the outer cylinder 10 or may be installed on the outer peripheral side surface of the distal end portion 10b.

[0079] <Configuration and operation of the modification example> FIG. 19 is a schematic diagram showing a modified example of the endoscope system shown in FIG. 16. The endoscope system 100 shown in FIG. 19 basically has the same configuration as the endoscope system 100 shown in FIG. 16 and can obtain the same effects, but is different from the endoscope system 100 shown in FIG. 16 in that the endoscope insertion portion 20, the outer cylinder 10, the operation portion 70, and the connection portion 80 are not disposable parts. This will be specifically described below.

[0080] In the endoscope system 100 shown in FIG. 19, the portion including the endoscope insertion portion 20 is not disposable. That is, in the endoscope system 100 shown in FIG. 19, the endoscope insertion portion 20 is cleaned and disinfected after use and reused. That is, the endoscope insertion portion 20 in the endoscope system 100 shown in FIG. 19 is reusable. Even if the pressure sensor 25c is applied to the endoscope system 100 having such a configuration, the same effects as the endoscope systems 100 shown in FIGS. 16 and 17 can be obtained. In the endoscope system 100 shown in FIG. 19, the pressure sensor 25c may be detachably installed on the endoscope insertion portion 20. In this case, even if the pressure sensor 25c fails when the endoscope insertion portion 20 is cleaned and disinfected, only the pressure sensor 25c can be replaced.

[0081] Also, in the endoscope systems 100 shown in FIGS. 16 to 19, the pressure sensor 25c may include a wireless module so that the detected pressure data can be wirelessly transmitted. Further, the pressure sensor 25c may include a power source such as a battery. In this case, since it is not necessary to connect a power line or a wiring for transmitting data to the pressure sensor 25c, the device configuration of the endoscope system 100 can be simplified.

[0082] The additional mechanisms 300 disclosed in the above-described embodiments may be implemented by appropriately combining them. For example, both the outer cylinder 10 and the sensor 25 may be implemented in the endoscope system 100.

[0083] The embodiments disclosed this time should be considered illustrative in all respects and not restrictive. As long as there is no contradiction, at least two of the embodiments disclosed this time may be combined. The basic scope of the present disclosure is indicated by the claims rather than the above description, and it is intended to include all modifications within the meaning and scope equivalent to the claims.

[0084] Hereinafter, various aspects of the present disclosure will be collectively described as appendices. (Appendix 1) An endoscope insertion portion to be inserted into the body, and an attachment mechanism, wherein the portion including the endoscope insertion portion is disposable, and the attachment mechanism includes an outer cylinder having a first insertion passage through which the endoscope insertion portion passes, and at least one of: a sensor installed on either the endoscope insertion portion or the outer cylinder to detect data regarding the external situation of the endoscope insertion portion. An endoscope system. (Appendix 2) The attachment mechanism includes the outer cylinder, the diameter of the endoscope insertion portion is 6 mm or less, the outer cylinder is rotatable relative to the endoscope insertion portion, the outer cylinder has a second insertion passage for inserting a treatment instrument, and the outer diameter of the outer cylinder is 10 mm or less. The endoscope system according to Appendix 1. (Appendix 3) The endoscope system according to Appendix 2, further comprising an auxiliary mechanism for assisting the relative rotation of the outer cylinder with respect to the endoscope insertion portion. (Appendix 4) The auxiliary mechanism includes a lubricant disposed between the endoscope insertion portion and the inner peripheral surface of the first insertion passage. The endoscope system according to Appendix 3. (Appendix 5) The outer cylinder has a supply passage for supplying the lubricant to the first insertion passage. The endoscope system according to Appendix 4. (Appendix 6) The auxiliary mechanism includes a drive member that generates an auxiliary driving force when the outer cylinder rotates relative to the endoscope insertion portion. The endoscope system according to any one of Appendices 3 to 5. (Appendix 7) The endoscope system according to any one of Appendices 2 to 6, comprising a twist suppression mechanism that suppresses the twist of the outer cylinder when the outer cylinder rotates relative to the endoscope insertion portion. (Appendix 8) The additional mechanism includes the sensor, The sensor measures data on the pressure in the atmosphere around the endoscope insertion portion as the data. The endoscope system according to any one of Appendices 1 to 7. (Appendix 9) The additional mechanism includes the sensor, The sensor measures data on the smoke contained in the atmosphere around the endoscope insertion portion as the data. The endoscope system according to any one of Appendices 1 to 7. (Appendix 10) An operation portion connected to the endoscope insertion portion, A connection portion connected to the operation portion and connecting the system main body portion and the operation portion, Further comprising a sterilization container having an internal space maintained in a sterilized state, The endoscope insertion portion, the additional mechanism, the operation portion, and the connection portion are accommodated in the internal space. The endoscope system according to any one of Appendices 1 to 9. (Appendix 11) An endoscope insertion portion to be inserted into the body, Comprising an additional mechanism, The additional mechanism, An outer cylinder having a first insertion passage through which the endoscope insertion portion passes, At least one of a sensor installed on either the endoscope insertion portion or the outer cylinder and detecting data on the external situation of the endoscope insertion portion. When the additional mechanism includes the outer cylinder, The diameter of the endoscope insertion portion is 6 mm or less. The outer cylinder is rotatable relative to the endoscope insertion portion. The outer cylinder has a second insertion passage for inserting a treatment instrument. The outer diameter of the outer cylinder is 10 mm or less. When the additional mechanism includes the sensor, The endoscope insertion portion includes an objective lens disposed on the end face at the distal end. The sensor is installed at a position adjacent to the objective lens on the end face on the distal end side of the outer cylinder or on the end face on the distal end side of the endoscope insertion portion. An endoscope system.

Explanation of reference numerals

[0085] 10 Outer cylinder, 10a Base portion, 10b Distal end portion, 11 First insertion passage, 12 Second insertion passage, 14 Third insertion passage, 20 Endoscope insertion portion, 21 Objective lens, 22 Illumination unit, 23 Treatment instrument insertion passage, 25 Sensor, 25a, 25b Smoke sensor, 25c Pressure sensor, 30 Auxiliary mechanism, 31 Lubricant, 32 Lubricant supply path, 32a Opening, 32b Main pipe portion, 32c Branch pipe portion, 33 Driving member, 34 Wiring, 35 Control unit, 40, 50 Treatment instrument, 60 Twisting suppression mechanism, 61 Wire, 70 Operation unit, 80 Connection portion, 90 System main body portion, 91 Main body portion, 92 Display portion, 100, 100A Endoscope system, 200 Disposable portion, 210 Sterilization container, 210a Internal space, 300 Additional mechanism, R1 Diameter, R2 Outer diameter.

Claims

1. An endoscope insertion part to be inserted into the body, and an additional mechanism, wherein the part including the endoscope insertion part is disposable, and the additional mechanism includes at least one of an outer cylinder having a first insertion passage through which the endoscope insertion part is inserted, and a sensor installed on either the endoscope insertion part or the outer cylinder to detect data regarding the external situation of the endoscope insertion part. An endoscope system.

2. The additional mechanism includes the outer cylinder, the diameter of the endoscope insertion part is 6 mm or less, the outer cylinder is rotatable relative to the endoscope insertion part, the outer cylinder has a second insertion passage for inserting a treatment instrument, and the outer diameter of the outer cylinder is 10 mm or less. The endoscope system according to Claim 1.

3. The endoscope system according to Claim 2, further comprising an auxiliary mechanism for assisting the relative rotation of the outer cylinder with respect to the endoscope insertion part.

4. The endoscope system according to Claim 3, wherein the auxiliary mechanism includes a lubricant disposed between the endoscope insertion part and the inner peripheral surface of the first insertion passage.

5. The endoscope system according to Claim 4, wherein the outer cylinder has a supply passage for supplying the lubricant to the first insertion passage.

6. The endoscope system according to Claim 3, wherein the auxiliary mechanism includes a driving member that generates an auxiliary driving force when the outer cylinder rotates relative to the endoscope insertion part.

7. The endoscope system according to any one of Claims 2 to 6, further comprising a torsion suppression mechanism for suppressing the torsion of the outer cylinder when the outer cylinder rotates relative to the endoscope insertion part.

8. The additional mechanism includes the sensor, and the sensor measures data of the pressure in the atmosphere around the endoscope insertion part as the data. The endoscope system according to Claim 1.

9. The additional mechanism includes the sensor, and the sensor measures data of the smoke contained in the atmosphere around the endoscope insertion part as the data. The endoscope system according to Claim 1.

10. An operation part connected to the endoscope insertion part, a connection part connected to the operation part and connecting the system main body part and the operation part, and further comprising a sterilization container having an internal space maintained in a sterilized state. The endoscope insertion portion, the additional mechanism, the operation portion, and the connection portion are accommodated in the internal space. The endoscope system according to any one of claims 1 to 6, claim 8, and claim 9.

11. An endoscope insertion portion to be inserted into the body, and an additional mechanism, wherein the additional mechanism includes at least one of an outer cylinder having a first insertion passage through which the endoscope insertion portion passes, and a sensor installed on either the endoscope insertion portion or the outer cylinder to detect data regarding the situation outside the endoscope insertion portion. When the additional mechanism includes the outer cylinder, the diameter of the endoscope insertion portion is 6 mm or less, the outer cylinder is rotatable relative to the endoscope insertion portion, the outer cylinder has a second insertion passage for inserting a treatment instrument, the outer diameter of the outer cylinder is 10 mm or less, When the additional mechanism includes the sensor, the endoscope insertion portion includes an objective lens disposed on an end surface on the tip side, and the sensor is installed at an end surface on the tip side of the outer cylinder or at the end surface on the tip side of the endoscope insertion portion adjacent to the objective lens. An endoscope system.

Images