JP4125558B2 - Endoscope device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an endoscope apparatus including a bending portion configured by a fluid pressure actuator on a distal end side of a long insertion portion.
[0002]
[Prior art]
In general, an endoscope applicable for industrial use and medical use is provided with a long insertion portion to be inserted into a lumen. In this type of endoscope, a bending portion is provided on the distal end side of the insertion portion, and the bending direction of the bending portion allows the observation direction of the endoscope to be directed in an arbitrary direction.
[0003]
For example, when inserting the insertion part of an industrial endoscope deep into a tortuous and relatively small-diameter pipe having a plurality of elbow parts, in addition to the pushing operation of the insertion part, bending operation and twisting of the insertion part By making full use of the hand operation such as the cutting operation, the elbow portion is passed through, and the distal end portion of the insertion portion is inserted to the target site for observation.
[0004]
[Problems to be solved by the invention]
However, when inserting the insertion part of an endoscope into a pipe having a plurality of elbow parts whose diameter is slightly larger than the insertion part, it is difficult to pass through several elbow parts by making full use of the hand operation. It was a necessary technology.
[0005]
The present invention has been made in view of the above circumstances, and an endoscope apparatus capable of easily inserting and observing an insertion part deep into a pipe having a plurality of elbow parts having a diameter slightly larger than that of the insertion part. The purpose is to provide.
[0006]
[Means for Solving the Problems]
An endoscope apparatus according to the present invention includes a distal end portion, a curve having a fluid pressure actuator that is integrally connected to the distal end portion and has an outer dimension that is the same as the outer dimension of the distal end portion and that is driven by fluid pressure. A flexible tube portion connected to the bending portion and a flexible tube portion having an outer diameter dimension smaller than an outer diameter size of the bending portion, and a flexible portion constituting the insertion portion. A guide tube that is slidably disposed on the outer peripheral side of the tube portion and has an outer diameter dimension substantially the same as the outer diameter dimension of the bending portion, and the guide tube and the bending portion of the insertion portion are detachable. And connecting / disconnecting means.
[0008]
According to these configurations, first, the insertion portion is inserted toward the target portion in an integrated state in which the bending portion and the guide tube are connected. Then, when the further insertion becomes difficult, the flexible tube is pushed in. Then, the connection state between the bending portion and the guide tube is released, the flexible tube portion is pushed out from the distal end of the guide tube, and the distal end portion of the insertion portion can be inserted deeper.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
1 to 13 relate to an embodiment of the present invention, FIG. 1 is a diagram illustrating a schematic configuration of an endoscope apparatus, FIG. 2 is a perspective view illustrating a configuration of an insertion portion of an endoscope, and FIG. FIG. 4 is a diagram illustrating the configuration of the insertion portion of the endoscope, FIG. 5 is a diagram illustrating the configuration of the bending portion, and FIG. 6 is a fluid chamber. FIG. 7 is a diagram illustrating the operation of the insertion portion, FIG. 8 is a diagram illustrating another configuration of the flexible tube portion and the guide tube, and FIG. 9 is another diagram of the guide tube. FIG. 10 is a diagram illustrating the relationship between the insertion portion and the drum portion, FIG. 11 is a diagram illustrating another relationship between the insertion portion and the drum portion, and FIG. 12 is another configuration example of the insertion portion. FIG. 13 is a diagram for explaining a configuration in which the fluid chamber and the insertion portion side fluid supply tube are communicated with each other.
[0011]
3A is a perspective view, FIG. 3B is a cross-sectional view including an enlarged view, FIG. 8A is a view showing a flexible tube, and FIG. 8B is a view showing a guide tube. FIG. 9A is a diagram illustrating a configuration of a plurality of tube bodies having different diameter dimensions, FIG. 9B is a diagram illustrating a configuration of a plurality of tube bodies having different diameter dimensions and length dimensions, and FIG. ) Is a perspective view illustrating the relationship between the insertion portion and the drum portion, FIG. 10B is a plan view illustrating the relationship between the insertion portion and the drum portion, and FIG. 11 (b) is a plan view illustrating another relationship between the insertion portion and the drum portion, and FIG. 13 (a) is a stepped communication between the fluid chamber and the insertion portion side fluid supply tube. The figure which shows the structure connected by a member, FIG.13 (b) shows the structure which connects a fluid chamber and the insertion part side fluid supply tube directly. It is.
[0012]
As shown in FIG. 1, an endoscope apparatus 1 according to this embodiment includes an endoscope 2 provided with an elongated insertion portion 2a, and a drum arranged in a state where the insertion portion 2a of the endoscope 2 is wound. A remote controller (hereinafter referred to as a remote controller) having an operation switch such as a joystick 5a for instructing a bending operation to the endoscope 2 and a frame portion 4 that is a support body that rotatably holds the drum portion 3. And abbreviated as 5). Reference numeral 6 denotes a control unit.
[0013]
The endoscope apparatus 1 includes a monitor 10 that displays an endoscopic image captured by the endoscope 2, an AC adapter 11 that serves as a power supply unit, control data of a valve control unit that is connected to a PC connection unit (not shown), and the like. A personal computer (see reference numeral 12 in FIG. 6) or the like is provided. Reference numeral 11a denotes an outlet connected to a commercial power source.
[0014]
On the other hand, a substantially cylindrical unit main body 30 having an opening at one end constituting the control unit 6 at the center of the inside of the drum unit 3 where the insertion portion 2a of the endoscope 2 is wound around the inner surface. Is arranged.
[0015]
A fluid pressure supply source 31 for supplying a fluid to a fluid pressure actuator, which will be described later, is provided on the drum portion opening 3 a side, which is the bottom surface side outer surface side of the unit body 30. The fluid pressure supply source 31 includes a gas cylinder 32 filled with a high-pressure gas, a regulator 33 that controls the pressure of the gas cylinder 32, and a pipe line 34 that supplies a fluid having a predetermined pressure. The gas cylinder 32 is filled with an incombustible gas such as carbon dioxide, chlorofluorocarbon, nitrogen, helium, argon, or nitrogen.
[0016]
As shown in FIGS. 1 and 2, the insertion portion 2 a includes a distal end portion 21 provided with an observation optical system and an illumination optical system (not shown), and a bending portion configured by a fluid pressure actuator (described later) connected to the distal end portion 21. 22 and a flexible tube portion 23 formed by integrating a metal mesh tube and a tube body, which will be described later, connected to the bending portion 22 and having an outer diameter smaller than the outer diameter of the bending portion 22, and the flexible tube portion 23. It is slidably disposed on the outside of the tube portion 23 as indicated by an arrow, and the outer diameter size of the curved portion 22 is integrated with the metal mesh tube and the tube body in the same manner as the flexible tube portion 23. And a guide tube 24 formed substantially the same. The guide tube 24 is brought into an integral state or a slidable state with respect to the flexible tube portion 23 by an attaching / detaching means described later.
[0017]
Reference numeral 23a denotes a flexible tube tip cap for integrally connecting the bending portion 22 and the flexible tube portion 23, reference symbol 24a denotes a guide tube tip cap provided with the attaching / detaching means, and reference symbol 24b denotes a gripping portion. This is a guide tube base end cap that also serves as a base.
[0018]
As shown in FIG. 3A, the guide tube 24 and the flexible tube portion 23 are made of, for example, a stainless steel wire or thin plate on the outer peripheral side of a long tube body 51 made of Teflon (registered trademark). The metal mesh tube 52 formed in the above is covered with predetermined softness and flexibility. The bases 23 a, 24 a, and 24 b are disposed at the distal end portion and the proximal end portion of the tube body 51.
[0019]
As shown in FIG. 3B, the outer surface of the tube body 51 is provided with a plurality of convex portions 53 whose tip portions are formed in a substantially hemispherical shape, and the tip portions of the convex portions 53 are formed on the metal mesh tube. Projecting from 52. As a result, the tip of the convex portion 53 formed on the flexible tube portion 23 makes point contact with the inner peripheral surface of the tube body 51, and the convex portion 53 formed on the guide tube 24 has a point contact. The tip is in point contact with the inner peripheral surface of the inserted pipe.
[0020]
The guide tube 24 and the flexible tube portion 23 are formed with different diameters and lengths of the tube body, and the tube body 51 and the metal mesh tube 52 are set to predetermined dimensions. .
[0021]
As shown in FIG. 4, the guide tube distal end cap 24 a has a tube body disposing recess 24 c that is fitted on the outer peripheral surface side of the distal end portion of the tube body 51 constituting the guide tube 24, and an outer peripheral surface of the bending portion 22. Further, a stepped recess 24d is provided on the outer peripheral surface side of the flexible tube tip 23a. At a predetermined position of the stepped recess 24d, an O-ring 24e made of an elastic member serving as an attaching / detaching means is disposed in close contact with the outer peripheral surface of the flexible tube tip 23a with a predetermined holding force. Yes.
[0022]
As shown in FIGS. 5 and 6, the bending portion 22 connected to the distal end portion 21 is configured as a fluid pressure actuator 40. The fluid pressure actuator 40 includes a multi-lumen tube 41 having four fluid chambers 41a, 41b, 41c, 41d and a central through hole 41e so as to correspond to the bending direction of the bending portion 22, for example, the vertical direction and the horizontal direction. For example, Teflon (registered trademark), Nylon (registered trademark), THV, polyimide, Hytrel, Aflon, PEEK, PBT made of the fluid chambers 41a, 41b, 41c, 41d communicate with the fluid chambers (hereinafter referred to as insertion). 42a, 42b, 42c, and 42d).
[0023]
A fluid supply amount control unit 35 that controls the fluid supplied from the gas cylinder 32 is provided in the internal space of the unit main body 30. The fluid supply amount control unit 35 includes a plurality of control boards (not shown) and four electromagnetic valve units 39a, 39b, 39c, 39d configured to correspond to the fluid chambers 41a, 41b, 41c, 41d. The valve unit 37 and a valve control unit 38 that controls the valve unit 37 are mainly configured.
[0024]
Then, by appropriately operating a joystick 5a provided in the remote controller 5, the fluid in the gas cylinder 32 is supplied to the fluid chambers 41a, 41b, 41c, through the insertion portion side tubes 42a, 42b, 42c, 42d, etc. The bending portion 22 can be bent in a desired direction by being fed into 41d.
[0025]
In the center through hole 41e, built-in components such as a signal line 21b extending from the CCD 21a constituting the observation optical system and a light guide fiber 21c constituting the illumination optical system are inserted.
[0026]
An inner coil 44 is inserted through the central through hole 41e. The inner coil 44 prevents the fluid chambers 41a, 41b, 41c, 41d from expanding in the direction of the central axis of the multi-lumen tube 41 and reducing the diameter of the central through hole 41e. This is to improve the bending efficiency by efficiently extending in the direction.
[0027]
Further, an outer coil 47 is disposed on the outer peripheral side of the multi-lumen tube 41 so as to cover it. The outer coil 47 prevents the fluid chambers 41a, 41b, 41c, 41d from expanding in the outer peripheral side direction of the multi-lumen tube 41, and the multi-lumen tube 41 efficiently extends in the longitudinal direction to improve the bending efficiency. Is. In addition, since the multi-lumen tube 41 is not excessively expanded by providing the inner coil 44 and the outer coil 47, the durability can be improved.
[0028]
Further, for example, a silicon tube 48 that covers the outer periphery of the outer coil 47 is bent to prevent the multi-lumen tube 41 from entering between the coils when the outer coil 47 is bent. At this time, for example, an outer tube 43 is disposed so as to prevent the multi-lumen tube 41 from entering between the coils.
[0029]
Further, reference numeral 22a denotes a blade constituting the outer surface of the bending portion 22, reference numeral 45 denotes a bending portion tip cap which becomes a connecting portion with the tip portion 21, and reference numeral 46 denotes a flexible tube tip cap 23a of the flexible tube portion 23. Reference numeral 49 denotes a connecting member formed of, for example, a silicon tube that connects the fluid chamber and the insertion portion side tube. The caps 45 and 46 are, for example, bonded and fixed to the distal end portion and the proximal end portion of the outer tube 43.
[0030]
The operation of the endoscope apparatus 1 configured as described above will be described.
A case will be described in which the endoscope apparatus 1 performs an inspection from a domestic pipe line to a main pipe of a gas pipe disposed in the household, for example.
[0031]
First, the inspector connects the outlet 11 a and slowly pulls out the insertion portion 2 a from the drum portion 3. Next, the remote controller 5 is taken out and the power switch is operated to make the bending operation possible. Next, the guide tube 24 and the guide tube base end cap 24b constituting the insertion portion 2a are held, and the insertion portion 2a of the endoscope 2 is inserted from the opening toward the main tube as shown in FIG. At this time, if necessary, the joystick 5a provided on the remote controller 5 is operated to change the bending state of the bending portion 22 or to perform the twisting operation with the hand holding the guide tube 24 so that the elbow portion is moved. The distal end portion 21 of the insertion portion 2a is pushed forward in the back direction.
[0032]
However, further insertion of the insertion portion 2a becomes difficult in a state where the plurality of elbow portions have passed as indicated by the solid line. At this time, the endoscope 2 of the present embodiment grips the flexible tube portion 23 near the proximal end cap 24c and pushes the flexible tube portion 23 toward the distal end side. Then, the flexible tube distal end cap 23a of the flexible tube portion 23 moves to the distal end side against the holding force of the O-ring 24e provided on the guide tube distal end cap 24a of the guide tube 24, and becomes a broken line. As shown, the flexible tube portion 23 is pushed out from the guide tube distal end cap 24a.
[0033]
Thereafter, if necessary, an operation of changing the bending state of the bending portion 22 by operating a joystick 5a provided on the remote controller 5 or a twisting operation with a hand holding the flexible tube portion 23 is performed. And the distal end portion 21 of the insertion portion 2a is inserted toward the main pipe as indicated by the arrow.
[0034]
As described above, the insertion portion of the endoscope is arranged at the distal end portion, the bending portion, the flexible tube portion having a diameter smaller than the outer diameter of the bending portion connected to the bending portion, and the outside of the flexible tube portion. By being configured with a guide tube that is slidable with respect to the bending portion, the insertion portion can be inserted into the bending portion with the guide tube integrated, and the flexible tube portion. And the flexible tube portion can be pushed out from the tip of the guide tube to insert the insertion portion deeper.
[0035]
Further, by providing a convex portion having a substantially hemispherical tip on the outer surface of the tube main body constituting the flexible tube portion and the guide tube, the flexible tube portion and the guide are provided between the guide tube and the pipe inner peripheral surface. Insertion can be improved by reducing resistance generated between the tube inner peripheral surface and the flexible tube portion and the pipe inner peripheral surface.
[0036]
In the present embodiment, the tube body forming the flexible tube portion and the guide tube is described as being configured by a single tube body. However, the tube body is illustrated in FIGS. 8 (a) and 8 (b). As shown in FIG. 5B, a plurality of tubes 61, 62,... Are connected and fixed (bonded or soldered) by, for example, a connecting pipe 60 to form a flexible tube portion 23A or a guide tube 24A having a predetermined length. May be. In this figure, the connecting pipe 60 is connected and fixed in a state of being fitted around the tubes 61, 62...
[0037]
When the guide tube is configured by connecting a plurality of tube bodies, as shown in FIG. 9A, the plurality of tube bodies 51a, 51b, 51c having different diameters are connected and fixed so that the distal end side has a small diameter. Then, the guide tube 24B is configured, or a plurality of tube bodies 51d, 51e, 51f having different diameters and lengths are overlapped to form the guide tube 24C as shown in FIG. 9B. May be. This makes it possible to configure a guide tube having a diameter that decreases toward the distal end side. Further, the guide tube 24C having the configuration shown in FIG. 9B is changed so as to have stiffness (flexibility) from the distal end side to the proximal end side, and the guide tube 24C is gripped. Insertability of the insertion portion 2a can be improved.
[0038]
Further, as shown in FIGS. 10 (a), 10 (b) and 11 (a), 11 (b), the insertion portion 2a is wound around the outer surface of the drum portions 3A, 3B. As shown in the figure, the base end portion of the guide tube 24 and the base end portion of the flexible tube portion 23 are fixed to different positions of the drum portions 3A and 3B via fixing members 70, and the drum portions 3A and 3B are fixed. As shown by the broken line arrow and the solid line arrow, the structure can be rotated separately, and only the flexible tube part 23 or the flexible tube part 23 and the guide tube 24 are moved. As a result, the insertion portion can be inserted with the guide tube integrated with the bending portion, the flexible tube portion can be pushed out from the distal end of the guide tube, and the insertion portion can be inserted deeper.
[0039]
Further, as shown in FIG. 12, the configuration of the proximal end side of the distal end portion 21 of the insertion portion 2a is a soft bending portion 71, and the blade tube is connected to the bending portion 71 and has a hardness slightly higher than that of the bending portion 71. 72, by connecting to the blade tube 72 and forming the serpentine tube 73 whose hardness is slightly higher than that of the blade tube 72, the flexibility of the insertion portion 2a is gradually increased from the distal end side to the proximal end side. It is possible to improve the insertability of the insertion portion by setting it to be hard (with a configuration that provides firmness).
[0040]
By the way, in the configuration of the fluid pressure actuator 40, when the communication member 49 is arranged at a predetermined position of the multi-lumen tube 41 as shown in FIG. 5, for example, the fluid chamber 41a and the insertion portion side tube 42a communicate with each other. By press-fitting the communicating member 49 into the end of the fluid chamber 41a, the diameter of the end of the multi-lumen tube 41 near the communicating member 49 becomes large, which causes the diameter of the insertion portion 2a to increase. .
[0041]
For this reason, as shown in FIG. 13A, a stepped portion 81 for preventing interference between the stepped communication members 82 is provided at the end of the multi-lumen tube 41, and the stepped communication member 82 is provided at the end of the fluid chamber 41a. Adhesive and fixed with an adhesive 83. At this time, the insertion portion side tube 42a is integrally connected and fixed to the stepped communication member 82 by the first bobbin fixing portion 84, and the stepped communication member 82 is connected to the end portion of the multi-lumen tube 41 by the second bobbin fixing portion 85. Integrate with the unit. This can reliably prevent the diameter of the end portion of the multi-lumen tube 41 from becoming a large diameter.
[0042]
Further, as shown in FIG. 13B, a narrow diameter portion 86 is formed at the distal end portion of each of the insertion portion side tubes 42a, 42b, 42c, 42d, and this small diameter portion 86 is placed at a predetermined position of the multi-lumen tube 41. Also, the diameter of the end portion of the multi-lumen tube 41 can be reliably prevented from being increased by connecting and fixing the fluid chamber and the insertion portion side tube integrally with the adhesive 83. The narrow diameter portion of the distal end portion of the insertion portion side tube is molded with a mold using the characteristics of the material of the tube, or the distal end portion is elongated in the longitudinal direction by a predetermined amount to be thinned.
[0043]
It should be noted that the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention.
[0044]
[Appendix]
According to the embodiment of the present invention described in detail above, the following configuration can be obtained.
[0045]
(1) An endoscope having an observation optical system and an illumination optical system at the distal end portion of the elongated insertion portion and having a curved portion constituted by a fluid pressure actuator connected to the distal end portion; and an insertion portion of the endoscope A drum portion in which a fluid pressure supply source that is wound and supplies a fluid to the fluid pressure actuator, and a fluid supply amount control unit that controls the fluid supplied from the fluid pressure supply source are arranged in a substantially central portion, and the drum In an endoscope apparatus comprising a support that rotatably holds a part,
The insertion part of the endoscope
A tip provided with an observation optical system and an illumination optical system;
A curved portion composed of a fluid pressure actuator connected to the tip, and
A metal tube and a tube body connected to the bending portion are integrally configured, and a flexible tube portion whose outer diameter is smaller than the outer diameter of the bending portion;
A guide tube formed integrally with a metal mesh tube and a tube body slidably disposed on the outer peripheral surface side of the flexible tube portion, and having an outer diameter dimension substantially the same as an outer diameter dimension of the curved portion;
An endoscope apparatus configured by providing
[0046]
(2) The endoscope apparatus according to appendix 1, wherein an attachment / detachment means for detachably connecting the flexible tube portion and the guide tube to the insertion portion is provided.
[0047]
(3) The endoscope apparatus according to appendix 2, wherein the attaching / detaching means is an elastic member that adheres to an outer surface of a base connecting the bending portion and the flexible tube portion with a predetermined holding force.
[0048]
(4) The endoscope apparatus according to appendix 1, wherein a plurality of convex portions each having a substantially spherical tip are provided on an outer surface of the tube body constituting the guide tube and the flexible tube portion.
[0049]
【The invention's effect】
As described above, according to the present invention, it is possible to provide an endoscope apparatus in which an insertion portion can be easily inserted and observed deep into a pipe having a plurality of elbow portions having a diameter slightly larger than that of the insertion portion. Can do.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a schematic configuration of an endoscope apparatus. FIG. 2 is a perspective view illustrating a configuration of an insertion portion of the endoscope. FIG. 3 is a diagram illustrating a configuration of a flexible tube portion and a guide tube. FIG. 4 is a diagram for specifically explaining the configuration of the insertion portion of the endoscope. FIG. 5 is a diagram for explaining the configuration of the bending portion. FIG. 6 is a diagram for explaining the relationship between the fluid chamber and the valve unit. FIG. 8 is a diagram illustrating the operation of the insertion portion. FIG. 8 is a diagram illustrating another configuration of the flexible tube and the guide tube. FIG. 9 is a diagram illustrating another configuration of the guide tube. FIG. 11 illustrates another relationship between the insertion portion and the drum portion. FIG. 12 illustrates another configuration example of the insertion portion. FIG. 13 illustrates the fluid chamber and the insertion portion side. Diagram explaining the configuration for communicating with the fluid supply tube 【Explanation of symbols】
DESCRIPTION OF SYMBOLS 1 ... Endoscope apparatus 2 ... Endoscope 2a ... Insertion part 21 ... Tip part 22 ... Bending part 23 ... Flexible tube part 24 ... Guide tube 24a ... Guide tube tip nozzle | cap | die 24e ... O-ring 51 ... Tube body 52 ... Mesh shape tube

Claims (8)

A leading end portion, a bending portion integrally connected to the leading end portion, and having a fluid pressure actuator that is driven by fluid pressure and having the same outer dimension as the outer dimension of the leading end portion; and the bending portion; An insertion portion composed of a flexible tube portion whose outer diameter dimension is smaller than the outer diameter dimension of the curved portion ;
A guide tube that is slidably disposed on the outer peripheral side of the flexible tube portion constituting the insertion portion, and has an outer diameter dimension substantially the same as an outer diameter dimension of the curved portion;
Detachable means for detachably connecting the guide tube and the curved portion of the insertion portion;
An endoscope apparatus comprising: The endoscope apparatus according to claim 1, wherein the guide tube is formed so that an outer dimension gradually becomes narrower toward the distal end portion. The flexible tube portion and the guide tube are formed of a tube body, and a convex portion is provided on the outer surface of each tube body of the flexible tube portion and the guide tube. The endoscope apparatus described. The endoscope apparatus according to claim 3, wherein a metal mesh tube is coated on an outer peripheral side of the tube body. A plurality of insertion portion side fluid supply tubes for circulating fluid supplied from the proximal end side of the insertion portion to the bending portion;
A multi-lumen tube having a plurality of fluid chambers provided in the bending portion and receiving the fluid circulated from the insertion portion side fluid supply tube;
A plurality of communicating members for communicating the insertion portion side fluid supply tube and the multi-lumen tube in correspondence with the bending direction of the bending portion;
    Have
  The step part which prevents the interference of the said communicating members was provided in the edge part which is the edge part of the said multi-lumen tube, and the said insertion part side fluid supply tube is connected. The endoscope apparatus according to any one of the above. A plurality of insertion portion side fluid supply tubes for circulating fluid supplied from the proximal end side of the insertion portion to the bending portion;
A multi-lumen tube having a plurality of fluid chambers provided in the bending portion and receiving the fluid circulated from the insertion portion side fluid supply tube;
    Have
  The end portion of the insertion portion side fluid supply tube, the end portion communicating with the fluid chamber of the multi-lumen tube includes a small-diameter portion, and the thin-diameter portion and the multi-lumen tube are formed of the bending portion. The endoscope apparatus according to any one of claims 1 to 4, wherein the endoscope apparatus communicates in correspondence with a bending direction. A drum portion in which the insertion portion is wound and a fluid pressure supply source for supplying a fluid to the fluid pressure actuator and a fluid supply amount control portion for controlling the fluid supplied from the fluid pressure supply source are disposed in a substantially central portion. When,
A support for rotatably holding the drum portion;
The endoscope apparatus according to any one of claims 1 to 6, further comprising: The drum portion has a first drum portion and a second drum portion that are independently rotatable in the same direction,
The guide tube is fixed to the first drum part via a guide tube fixing member, and the insertion part is fixed to the second drum part via an insertion part fixing member,
The endoscope apparatus according to claim 7, wherein only one of the guide tube or the insertion portion is wound or sent out by turning only one of the first drum portion and the second drum portion. .

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