JP5331318B2 - Endoscope device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an endoscope apparatus the insert of which is easy to go through even a thin and intricately curved duct without either lowering the flexibility of the insert or increasing the entire apparatus in size. <P>SOLUTION: The endoscope apparatus 1 is provided with an endoscope 2 including an insert 6 flexible enough to be inserted into a subject S, first fluid jet means 5 to jet out a fluid F1 from the proximal end side toward the distal end side of the endoscope 2, a flange 3 provided at the insert 6 of the endoscope 2 and overhanging it and first vibrating means 25 to vibrate the flange 3. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to an endoscope apparatus for observing a subject.

In recent years, in various fields such as the medical field and the industrial field, an endoscope apparatus having an insertion part that can be inserted into a subject is used so that a narrowed part such as a duct that cannot be directly observed by an observer can be observed. Has been. The insertion part of such an endoscope apparatus is required to be flexible so that it can be freely bent inside the subject in order to obtain a good insertion property. However, if a certain degree of flexibility is given, the rigidity is lowered, and it becomes impossible to push the inside of the subject from the proximal end side, resulting in a problem that the insertability is lowered. In order to solve such a problem, the pressurizing tube extends from the proximal end of the insertion portion to the distal end, the distal end portion is formed in a J-shape, and the fluid is sent from the proximal end side to the pressurizing tube. An endoscope apparatus provided with ejection means having a syringe has been proposed (see, for example, Patent Document 1). In this endoscope apparatus, by sending the fluid to the pressurizing tube by the syringe, the delivered fluid is ejected toward the proximal end side at the distal end of the insertion portion, and thereby propelling force is applied to the distal end of the insertion portion. It is said that it is possible to generate and insert the insertion part into the subject.
Japanese Unexamined Patent Publication No. 7-313443

  However, in the endoscope apparatus of Patent Document 1, in order to eject the fluid from the distal end of the pressurizing tube having a pressure necessary as a means for generating a propulsive force, it is formed in a long shape along the insertion portion. It is necessary to make the inner diameter of the pressurizing tube a certain size or more so that there is no pressure loss in the pressurizing tube. However, increasing the thickness of the pressurizing tube to ensure the necessary propulsive force reduces the flexibility of the insertion section, and as a result, it is difficult to insert into a narrow and complicatedly bent pipe. There was a problem that would become. It is also possible to prepare a large syringe capable of delivering a high-pressure fluid so that a sufficient driving force can be generated even if a pressure loss occurs in the pressurizing tube. However, there was a problem that would increase the size. In addition, when inserted into the subject, the frictional resistance with the subject increases, and even if the necessary propulsive force is applied, there is a problem that the insertability is further reduced by this frictional resistance. .

  The present invention has been made in view of the above-described circumstances, and is a thin and complicatedly bent pipe line without reducing the flexibility of the insertion section and without increasing the size of the entire apparatus. However, an endoscope apparatus that can be easily inserted is provided.

In order to solve the above problems, the present invention proposes the following means.
An endoscope apparatus according to the present invention includes an endoscope including a flexible insertion portion that can be inserted into a duct that is a subject, and a proximal end side of the duct. A first fluid ejecting means for ejecting fluid into the duct from the proximal end side toward the distal end side, and a distal end portion disposed on the distal end side in the insertion portion of the endoscope, A first oscillating means that vibrates the flange, and is disposed on the proximal end side in the insertion portion and is flexible. provided flexible tube portion having a gender, and a second excitation means for vibrating the insertion portion, Bei example, said first and second excitation means, the air compressor capable of discharging the fluid Connected, the first vibration generating means jets fluid from the outer peripheral surface of the flange part toward the radial direction of the insertion part, A second fluid ejecting means for rotating and vibrating the scissors, wherein the first exciter means is a shaft-shaped hood having a through-hole formed in the axial direction and a substantially tubular member in the axial direction; A communication hole is formed, and a shaft body rotatably inserted on the base end side of the through hole, and a fluid supply pipe connected to the base end portion of the shaft body, In the shaft body, three communication holes communicating from the outer periphery to the flow hole are formed at equal intervals in the circumferential direction, and the hood has the through hole at a position coinciding with the communication hole in the shaft body in the axial direction. Four discharge holes communicating from the hole to the outer peripheral surface are formed at equal intervals in the circumferential direction, and the four discharge holes are formed radially from the through hole to the outer peripheral surface side, and in the vicinity of the outer peripheral surface, respectively. It is characterized in that it is inclined to one side in the circumferential direction and opens to the outer peripheral surface .

According to the endoscope apparatus according to the present invention, the fluid is ejected from the first fluid ejecting means in a state where the insertion portion is disposed inside the subject, and the buttocks are vibrated by the first vibrating means. Let The fluid from the first fluid ejecting means is guided by the subject from the proximal end side to the distal end side of the endoscope, and ejected to the collar portion provided in the insertion portion and projecting to the outer peripheral side. At this time, since the fluid passes through the inside of the subject, the fluid can be ejected to the buttock while suppressing pressure loss, and a propulsive force is given to the buttock by the ejected fluid. Further, the flange portion is in a state in which the frictional resistance is reduced by the vibration from the first vibrating means. For this reason, the insertion part in which the collar part was provided can be further inserted by the driving force by fluid ejection. Here, in the present endoscope apparatus, a flange is provided in the insertion portion of the endoscope, and fluid is ejected from the proximal end side of the endoscope by the first fluid ejecting means as means for generating a propulsive force, Further, only the first vibrating means is provided as means for reducing the frictional resistance, and the outer diameter of the endoscope can be minimized. For this reason, an endoscope can be inserted based on the propulsive force given to the collar part, without reducing the flexibility of an insertion part, and improvement of insertability can be aimed at.
In addition, by causing the insertion portion to vibrate by the second vibrating means, it is possible to reduce the frictional resistance of the insertion portion and further improve the insertability.

In the endoscope apparatus described above, it is more preferable that a plurality of the collar portions are provided in the axial direction of the insertion portion.
According to the endoscope apparatus according to the present invention, the plurality of collars are provided in the axial direction of the insertion part, so that the fluid from the first fluid ejecting means is ejected sequentially from the proximal end side to each collar. Will be. For this reason, propulsive force is given to the insertion portion at a plurality of positions different in the axial direction, and the insertion portion can be more preferably inserted.

  Further, in the above-described endoscope apparatus, a substantially tubular and flexible guide tube that is externally mounted on the insertion portion of the endoscope, and a tube side flange portion that is provided on the guide tube and projects to the outer peripheral side It is said that it is more preferable to provide.

  According to the endoscope apparatus according to the present invention, the guide tube is provided with the tube side flange portion that protrudes to the outer peripheral side, so that a propulsive force is given to the guide tube by the fluid by the first fluid ejecting means. Can be inserted. For this reason, an insertion part can be more suitably inserted using a guide tube as a guide.

  According to the endoscope apparatus of the present invention, it is possible to reduce the frictional resistance without reducing the flexibility of the insertion portion by including the collar portion, the first fluid ejecting means, and the first vibrating means. In addition, the necessary propulsive force can be reliably transmitted to the heel part and inserted, and the insertability can be improved. For this reason, even a narrow and complicatedly bent pipe line can be easily inserted. Moreover, the pressure loss of the fluid ejected from the first fluid ejecting means can be minimized, and the entire apparatus can be prevented from becoming large.

(First embodiment)
Hereinafter, an endoscope apparatus according to a first embodiment of the present invention will be described with reference to the drawings. 1 and 2 show an endoscope apparatus 1 as an embodiment of the present invention. As shown in FIG. 1, an endoscope apparatus 1 includes an endoscope 2 to be inserted into a subject S, and a first collar part 3 and a second collar part 4 provided on the endoscope 2. And a fluid ejecting means (first fluid ejecting means) 5 capable of ejecting compressed air F1 as a fluid.

  The endoscope 2 includes an elongated insertion portion 6, an operation portion 7 provided on the proximal end side of the insertion portion 6, and a main body portion 8 connected to the operation portion 7. The insertion portion 6 includes a hard distal end portion 6a in order from the distal end side, a bending portion 6b that can be bent under the operation of the operation portion 7, and a flexibility that can be bent according to the subject S. It is comprised with the pipe part 6c. The distal end 6a is provided with a CCD and an objective lens 9 (not shown) that are observation means capable of observing the subject S, and a light guide that is disposed inside the bending portion 6b and the flexible tube portion 6c and exposed from the distal end surface 6d. 10. The operation unit 7 is provided with a joystick 7a, which can bend the bending portion 6b freely in the radial direction. Furthermore, the endoscope 2 has a channel 2 a that opens to the distal end surface 6 d of the distal end portion 6 a and communicates with the opening portion 7 b of the operation portion 7 through the insertion portion 6.

  The main body 8 includes a display unit 8 a connected to a CCD provided inside the distal end 6 a and a light source connected to the light guide 10 by an imaging cable (not shown) disposed inside the insertion unit 6. Part 8b. For this reason, the distal end side is illuminated from the light guide 10 exposed on the distal end surface 6d of the distal end portion 6a by the illumination light supplied from the light source unit 8b of the main body unit 8, and an image of the subject S imaged by the CCD is obtained. The subject S can be observed by being displayed on the display unit 8 a of the main body unit 8.

  As shown in FIG. 1, the fluid ejecting means 5 includes an air compressor 12 that can discharge the compressed air F <b> 1, an air tube 13 that guides the compressed air F <b> 1 discharged from the air compressor 12, and a tip of the air tube 13. Provided with a cock 14 that can be switched between the presence and absence of injection of compressed air F1. The air compressor 12 of the fluid ejecting means 5 is separate from the main body 8 of the endoscope 2, but the air compressor 12 may be built in the main body 8 and may be integrated.

Next, the detail of the 1st collar part 3 and the 2nd collar part 4 which were provided in the endoscope 2 is demonstrated.
As shown in FIG. 2, the first flange portion 3 is provided at the distal end portion 6 a of the insertion portion 6 and has a hood 20 that projects to the outer peripheral side. Moreover, the 2nd collar part 4 is provided in the flexible tube part 6c of the insertion part 6, and has the hood 20 protruding over the outer peripheral side similarly. These hoods 20 are substantially disk-shaped members in which a through hole 20a through which the insertion portion 6 is inserted is formed, and a recess 20b is formed on the base end side. Moreover, the front end surface 20c is formed in a curved surface shape. Various materials such as a hard material and a soft material can be selected as the material for forming the hood 20, but the subject is not damaged as a result of insertion, for example, to reduce friction with the surroundings. A hard material is preferred. Moreover, it is preferable that it is not deformed by heat when it is not deformed by the environment inside the subject, for example, when used in a high temperature environment. Further, in order to observe the distal end side by the observation means provided at the distal end portion 6a of the insertion portion 6, a transparent or translucent material is more preferable. Specific examples of such a suitable material include polycarbonate, fluororesin, and acrylic. Further, the through hole 20 a of the hood 20 is formed at a position eccentric with respect to the center of gravity of the hood 20. And each hood 20 of the 1st collar part 3 and the 2nd collar part 4 is detachably fixed to the insertion part 6 in the fixed position eccentrically eccentric to the gravity center G20 of its own by the eccentric fixing part 21. ing.

  More specifically, the eccentric fixing portion 21 includes a fixing ring 22 that is externally fitted to the outer peripheral surface of the insertion portion 6 at each attachment position of the first flange portion 3 and the second flange portion 4, and an external fit to the fixing ring 22. Bearing member 23 formed. The fixing ring 22 is fixed to the insertion portion 6 by friction fixing, adhesive fixing, or screwing. The corresponding bearing members 23 are fitted in the through holes 20 a of the hood 20. Thereby, each hood 20 of the 1st collar part 3 and the 2nd collar part 4 is a fixed position eccentric with respect to the gravity center of itself, and can rotate centering on the central axis L6 of the insertion part 6 as a rotating shaft. It is fixed. And the 1st collar part 3 and the 2nd collar part 4 are eccentrically fixed to the radial direction of the insertion part 6 by the eccentric fixing | fixed part 21, and are compressed air F1 from the fluid injection means 5 so that it may mention later. It is possible to vibrate in an eccentric direction by injecting the fluid, that is, an oscillating means that vibrates each of the first collar part 3 and the second collar part 4 by the fluid ejecting means 5 and the eccentric fixing part 21. (First vibrating means) 25 is configured. An inner flange 20d that protrudes toward the inner peripheral side is formed at the base end of the through hole 20a of the hood 20, and a female screw 20e is formed at the tip of the through hole 20a of the hood 20, so that the retaining ring 20f is screwed together. For this reason, the hood 20 is prevented from falling off the bearing member 23 by the inner flange 20d and the retaining ring 20f.

  Next, the operation of the endoscope apparatus 1 according to this embodiment will be described by taking as an example a case where the endoscope apparatus 1 is inserted into the duct S1 as the subject S as shown in FIG. First, the endoscope 2 is inserted by being pushed into the inside S2 of the pipe line S1 from the distal end portion 6a. At this time, since the insertion portion 6 includes the flexible tube portion 6c having flexibility, the insertion portion 6 is inserted into a shape along the shape of the pipe line S1. Moreover, in the 1st collar part 3 and the 2nd collar part 4, the insertion resistance can be suppressed to the minimum because the front end surface 20c of the hood 20 is formed in the curved surface. When the insertion portion 6 of the endoscope 2 is disposed for a certain length in the interior S2 of the pipe line S1, the endoscope 2 is then inserted by the compressed air F1 ejected from the fluid ejecting means 5. I will let you.

  That is, first, as shown in FIG. 1, the distal end portion of the air tube 13 of the fluid ejecting means 5 is disposed at the proximal end S3 of the conduit S1 in a state where the insertion portion 6 is disposed inside the conduit S1. In the fluid ejecting means 5, the compressed air F <b> 1 is ejected from the air compressor 12 into the inside S <b> 2 of the pipe line S <b> 1 by operating the cock 14. The injected compressed air F1 is guided to the front end side by the pipe line S1. First, a part of the compressed air F1 is injected into the hood 20 of the second flange part 4, and the other part passes through the outer peripheral side and further reaches the hood 20 of the first flange part 3 on the distal end side. Be injected. For this reason, propulsive force is given to each hood 20 of the 1st collar part 3 and the 2nd collar part 4 by the compressed air F1 injected. In addition, since the recessed part 20b is formed in the base end side of the food | hood 20, the injected compressed air F1 can be efficiently converted into a driving force. Furthermore, since each hood 20 of the first collar part 3 and the second collar part 4 is eccentrically fixed by the eccentric fixing part 21, the hood 20 vibrates in the eccentric direction when the compressed air F1 is injected. It becomes. For this reason, it is possible to reduce the frictional resistance between the hood 20 of the first heel part 3 and the second heel part 4 and the subject S, and the propulsive force by the compressed air F1 is inserted from each hood 20 in this state. The insertion portion 6 is further inserted by being transmitted to the portion 6.

As described above, by providing the first flange portion 3 and the second flange portion 4 and the fluid ejecting means 5 and further including the eccentric fixing portion 21, the vibration generating means 25 is configured to reduce the frictional resistance. However, the insertion portion 6 can be inserted by the propulsive force generated by the compressed air F1.
Here, in the endoscope apparatus 1 according to the present embodiment, the first collar 3 and the second collar 4 are provided in the insertion section 6 of the endoscope 2, and the first means as means for generating a propulsive force is provided. The fluid ejecting means 5 only injects the compressed air F1 from the proximal end side of the endoscope 2 and is provided only with the first vibrating means 25 as means for reducing the frictional resistance. The outer diameter can be minimized. For this reason, the endoscope 2 can be inserted based on the propulsive force applied to the first collar part 3 and the second collar part 4 without reducing the flexibility of the insertion part 6. Therefore, it is possible to easily insert a thin and complicatedly curved pipe line S1. Further, since the compressed air F1 ejected from the first fluid ejecting means passes through the inside of the pipe line S1, which is the subject S, the pressure loss can be minimized. For this reason, the pressure of the compressed air F1 can be efficiently converted into a propulsive force, and the entire apparatus can be prevented from being enlarged.

  Further, in the present embodiment, the first collar 3 and the second collar 4 are provided with two collars having different positions in the axial direction, so that they are propelled at a plurality of positions of the insertion part 6. A force will be given and it can insert more suitably. Moreover, in this embodiment, each hood 20 of the 1st collar part 3 and the 2nd collar part 4 is being fixed by the eccentric fixing | fixed part 21 so that rotation is possible. For this reason, the compressed air F <b> 1 of the fluid ejecting means 5 is ejected, so that it can vibrate more effectively and the frictional resistance can be reduced.

  Moreover, in this embodiment, each hood 20 of the 1st collar part 3 and the 2nd collar part 4 is attached to the insertion part 6 by the eccentric fixing | fixed part 21 so that attachment or detachment is possible. For this reason, it is possible to select a hood having an optimum outer diameter in accordance with the inner diameter of the duct S that is the subject to be inserted. In addition, even if the outer diameter is the same, by selecting a hood with a different position where the through hole is formed, the vibration state due to the compressed air can be changed. You can also choose the food that will be. In addition, it is conceivable that the hood itself is worn by continuous use, but in such a case, the hood can be replaced, which is effective for maintenance.

  In the present embodiment, the hoods 20 of the first flange portion 3 and the second flange portion 4 are fixed by the eccentric fixing portion 21 using the through holes 20a, but the through holes 20a are radially arranged. The through holes 20 a may be selected and fixed by the eccentric fixing portion 21. By doing in this way, the vibration state by compressed air F1 can be changed also in the same hood 20. Further, as a method of decentering the through hole 20a of the hood 20 from the center of gravity G20, not only the position of the through hole 20a is shifted with respect to the centroid of the outer shape of the hood 20, but also a cavity and a recess are asymmetrically formed inside the hood 20. It may be formed. Alternatively, the hood 20 may be provided with a convex portion, a weight, or the like so as to be eccentric and fixed as a whole. Specific examples are shown below.

  FIG. 3 shows a first modification of this embodiment. As shown in FIG. 3, in the endoscope apparatus according to this modification, the first collar portion 30 is provided so as to protrude from the distal end side of the distal end portion 6 a of the insertion portion 6. The first collar 30 includes a substantially hemispherical hood 31 and a weight 32 fixed to the outer surface 31 a of the hood 31. Here, the weight 32 is provided at a position that is different in the radial direction with respect to the center line 31 b of the hood 31. For this reason, the center of gravity of the entire first collar portion 30 is eccentric in the radial direction with respect to the center line L31 of the hood 31. And the hood 31 is being fixed to the front end surface 6d of the front-end | tip part 6a of the insertion part 6 with the spring member 33 which is the eccentric fixing | fixed part connected on the centerline L31.

  Similarly, in the endoscope apparatus of this modified example, if the compressed air F1 from the fluid ejecting means 5 is jetted onto the hood 31 of the first collar 30, a propulsive force is given and the eccentricity is caused by the spring member 33. Since it is fixed, it vibrates in the radial direction. For this reason, the insertion part 6 will be inserted by the given driving force, reducing frictional resistance. Here, in this modified example, since the hood 31 of the first collar portion 30 is fixed by the spring member 33, it can be more effectively vibrated using the restoring force of the spring member 33. In this modification, the weight 32 is fixed to the outer surface of the hood 31, but the weight 32 may be a screw type, for example. By doing so, the weight 32 can be attached and detached, and a screw having a size that can satisfy the optimum vibration condition can be selected and screwed.

  4 and 5 show a second modification of this embodiment. As shown in FIGS. 4 and 5, in the endoscope apparatus of this modification, the first collar 35 has a hood 36 formed in a substantially cylindrical shape, and the distal end portion of the insertion portion 6 in the same manner as described above. It protrudes from the front end side of 6a. The hood 36 has a distal end surface 36a formed in a substantially spherical shape, and a recess 36b formed on the proximal end side. Further, a through hole 36d is formed in the hood 36 at a position eccentric from the center line L36. A shaft body 37 that is an eccentric fixing portion protruding from the distal end surface 6 d of the distal end portion 6 a of the insertion portion 6 is inserted through the through hole 36 d of the hood 36. In the shaft body 37, locking portions 37 a and 37 b whose outer diameters are enlarged are formed on the distal end side and the proximal end side of the hood 36, respectively, and the movement of the hood 36 in the axial direction is restricted. For this reason, the hood 36 is rotatably fixed in an eccentric state by the shaft body 37.

  A plurality of fluid receiving portions 38 are provided in the circumferential direction on the proximal end side of the outer peripheral surface 36e of the hood 36 so as to protrude to the outer peripheral side. Each fluid receiving portion 38 is a substantially plate-like member and is provided to be inclined in the same direction with respect to the center line L36 of the hood 36. For this reason, if the compressed air F <b> 1 is ejected to the fluid receiving portion 38 by a fluid ejecting means (not shown), a rotational force is generated around the shaft 37. As a result, the hood 36 rotates and vibrates around the axis of the shaft body 37, that is, the shaft body 37, the fluid receiving portion 38, and the fluid ejecting means (not shown) generate vibration means (first vibration means). 39 is configured. Similarly, in the endoscope apparatus of this modification, the compressed air F1 from the fluid ejecting means (not shown) is ejected to the hood 36, so that the hood 36 rotates and vibrates as described above and is given a propulsive force. Thus, the insertion portion 6 can be inserted suitably.

  In the above modification, the fluid receiving portion 38 of the hood 36 is provided so as to be exposed to the outer peripheral side, but the outside of the fluid receiving portion 38 is covered with another member. It is also good. FIG. 6 shows a third modification of this embodiment. As shown in FIG. 6, in this modified example, the hood 36 is covered with a substantially cylindrical cover 40. The tip of the fluid receiving portion 38 of the hood 36 is fixed to the inner peripheral surface of the cover 40. Further, the base end of the fixing member 41 extending to the inner peripheral side is fixed to the front end of the cover 40. The distal end of the fixing member 41 is fixed to the outer peripheral surface 36 e of the hood 36. For this reason, the hood 36 and the cover 40 can rotate together. That is, if the compressed air F1 is ejected by a fluid ejecting means (not shown), the hood 36 and the cover 40 are rotated and oscillated, but the fluid receiving portion 38 is located inside the cover 40, so There is no contact with the specimen. For this reason, it is possible to prevent the fluid receiving portion 38 from coming into contact with the subject and increase the frictional resistance, and to insert the insertion portion 6 more suitably.

  FIG. 7 shows a fourth modification of this embodiment. As shown in FIG. 7, in the endoscope apparatus of this modified example, the first collar portion 45 has a hood 46 formed in a substantially hemispherical shape, and the distal end of the distal end portion 6a of the insertion portion 6 is the same as described above. It protrudes to the side. In the hood 46, a through hole 46a is formed at a position eccentric from the center line L46. The through hole 46a has a stepped portion 41b from the proximal end side to the distal end side and is reduced in diameter. A shaft body 47 having a stepped portion 47a on the distal end side corresponding to the through hole 46a and having a reduced diameter is fitted into the through hole 46a as an eccentric fixing portion. A male screw 47 b is formed at the tip of the shaft body 47 and protrudes toward the tip of the hood 46. The nut 47c is screwed onto the male screw 47b of the shaft body 47 and is tightened via a washer 47d, so that the shaft body 47 and the hood 46 are integrated. Further, a screw hole 47 e is formed at the base end of the shaft body 47.

  In addition, a rotation drive unit 48 is inserted into the channel 2 a of the endoscope 2. More specifically, the rotation drive unit 48 includes a tube 48a inserted into the channel 2a, a motor 48c that is built in the distal end portion of the tube 48a and has a shaft portion 48b projecting toward the distal end side, and an inside of the tube 48a. And a wiring 48d connected to the motor 48c. A male screw 48e is formed at the tip of the shaft portion 48b and is screwed into the screw hole 47e so as to be integrated with the shaft body 47 of the first flange portion 45. The wiring 48d is connected to the main body 8 (not shown), and can drive the motor 48c under the control of the main body 8. By driving the motor 48c, the hood 46 that is eccentrically fixed to the shaft body 47 rotates and vibrates around the axis of the shaft body 47. That is, the shaft body 47 and the rotation drive unit 48 generate vibration means. (First vibration means) 49 is configured. Similarly, in the endoscope apparatus of this modified example, the compressed air F1 is jetted from the fluid ejecting means (not shown) to the hood 46, so that the hood 46 vibrates as described above and is given a propulsive force. The insertion part 6 can be inserted suitably.

  8 and 9 show a fifth modification of this embodiment. As shown in FIG. 8, in the endoscope apparatus according to this modification, the first collar 50 has a hood 51 formed in a substantially hemispherical shape, and the distal end of the distal end portion 6a of the insertion portion 6 is the same as described above. It protrudes to the side. In the hood 51, a through hole 51a is formed at a position eccentric from the center line L51, and a screw hole 51b communicating in the radial direction from the outer peripheral surface to the through hole 51a is formed. A recess 51c is formed on the base end side.

  In addition, a rotation drive unit 52 is externally mounted on the insertion unit 6 of the endoscope 2. More specifically, the rotation drive unit 52 is connected to the flexible tube 53 sheathed on the insertion unit 6, the motor 54 disposed on the outer periphery of the distal end portion 6 a of the insertion unit 6, and the distal end of the tube 53. And a hard substantially tubular motor fixing member 55 for fixing the motor 54. The motor fixing member 55 has a reduced diameter on the base end side, and is fitted and fixed to the tube 53. As shown in FIGS. 8 and 9, the front end surface 55a of the motor fixing member 55 is formed with a first through hole 55b and a second through hole 55c, and two through holes having different outer diameters. ing. The first through hole 55b is set to be approximately equal to the outer diameter of the distal end portion 6a of the insertion portion 6, and the distal end portion 6a is fitted therein. Further, the second through hole 55 c is set smaller than the outer diameter of the motor 54.

  The inner diameter of the motor fixing member 55 is set to be approximately equal to the sum of the outer diameter of the distal end portion 6a of the insertion portion 6 and the outer diameter of the motor 54. The motor 54 is connected to the outer peripheral surface of the distal end portion 6a of the insertion portion 6 and the motor. It is sandwiched between the inner peripheral surface of the fixing member 55 and fixed in the radial direction. Further, inside the motor fixing member 55, a tubular member 56 is fitted on the proximal end side of the motor 54, and the motor 54 is sandwiched between the distal end surface 55a of the motor fixing member 55 and the tubular member 56, and has a shaft. It is fixed in the direction.

  In addition, a shaft body 58 that is an eccentric fixing portion that extends through the second through hole 55c and extends in the axial direction is fixed to the motor 54. The shaft body 58 is inserted into the through hole 51 a of the hood 51. The hood 51 is eccentrically fixed to the shaft body 58 by fastening the fixing screw 51d screwed into the screw hole 51b to the shaft body 58. In addition, a wire 54 a disposed inside the tube 53 is connected between the motor 54 and the main body 8 (not shown), and the motor 54 can be driven under the control of the main body 8. It has become. Then, by driving the motor 54, the hood 51 of the first flange portion 50 rotates and vibrates around the axis of the shaft body 58. That is, the shaft body 58 and the rotation driving unit 52 cause the vibration generating means (first (Vibration means) 59 is configured.

  Similarly, in the endoscope apparatus of this modified example, the compressed air F1 is jetted onto the hood 51 from a fluid ejecting means (not shown), so that the hood 51 vibrates as described above and is given a propulsive force. 6 can be inserted suitably. And it is good also as a structure which provides the rotational drive part 52 which rotates and vibrates the hood 51 in the outer side of the insertion part 6 like the endoscope apparatus of this modification.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. 10 to 15 show a second embodiment of the present invention. In this embodiment, members that are the same as those used in the above-described embodiment are assigned the same reference numerals, and descriptions thereof are omitted.

As shown in FIG. 10, the endoscope apparatus 60 of this embodiment includes a substantially hemispherical hood 63, a flange 61 provided to protrude from the distal end side of the distal end portion 6 a of the insertion portion 6, In addition to the first fluid ejecting means 5, a second fluid ejecting means 62 for ejecting compressed air F2 as a fluid is provided.
As shown in FIGS. 11 and 12, the hood 63 of the first flange 61 has a through hole 63a in the axial direction and a recess 63b on the proximal end side. The through-hole 63a has a reduced diameter portion 63c having a reduced diameter in a step shape at an intermediate portion. Moreover, the shaft body 64 is inserted in the base end side of the through-hole 63a so that rotation around an axis is possible. The shaft body 64 is a substantially tubular member, and is formed with a flow hole 64a communicating in the axial direction. Further, the base end portion 64 b of the shaft body 64 projects from the hood 63 with the outer diameter reduced. A fluid supply pipe 65 is connected to the base end portion 64b of the shaft body 64 and communicates with a first supply pipe 76 of a second fluid ejecting means 62 (described later) inserted through the channel 2a.

  Further, a female screw 64c is formed at the tip of the flow hole 64a of the shaft body 64. A fixing screw 66 having a head portion 66 a inserted from the front end side into the through hole 63 a of the hood 63 is screwed into the female screw 64 c of the shaft body 64. The outer diameters of the head 66 a of the fixing screw 66 and the shaft body 64 are set to be larger than the inner diameter of the reduced diameter portion 63 c of the through hole 63 a of the hood 63. It is fixed to be rotatable.

  The shaft body 64 is formed with three communication holes 64d communicating from the outer periphery to the circulation hole 64a at substantially equal intervals in the circumferential direction. On the other hand, in the hood 63, four discharge holes 63d communicating from the through hole 63a to the outer peripheral surface are formed at substantially equal intervals in the circumferential direction at a position substantially coincident with the connecting hole 64d of the shaft body 64 in the axial direction. . The four discharge holes 63d are formed in the radial direction from the through hole 63a to the outer peripheral surface side, and are inclined to one side in the circumferential direction in the vicinity of the outer peripheral surface and open to the outer peripheral surface.

  As shown in FIGS. 10 and 13, the second fluid ejecting means 62 has a main body portion 70 and a guide tube 71 extending from the main body portion 70 and inserted into the channel 2 a. As shown in FIG. 13, the main body 70 includes an air compressor 72 that can discharge the compressed air A, a regulator 73 that adjusts the compressed air A from the air compressor 72, and a controller that controls the air compressor 72 and the regulator 73. 74. Further, the regulator 73 is connected to the first supply pipe 76, the second supply pipe 77, the third supply pipe 78, the fourth supply pipe 79 and the four supply pipes via the joint 75. Yes. Corresponding valves 76a, 77a, 78a, 79a are provided between the supply pipes and the joints 75, respectively, and the flow rate of the compressed air A is adjusted independently under the control of the control unit 74. It is possible to do. The first supply pipe 76, the second supply pipe 77, the third supply pipe 78, and the fourth supply pipe 79 are inserted through the guide pipe 71 and inserted into the channel 2a of the endoscope 2. Has been.

  Here, the first supply pipe 76 is inserted to the tip of the channel 2 a and connected to the fluid supply pipe 65. For this reason, when the compressed air F2 is sent to the first supply pipe 76 under the control of the control unit 74, the compressed air F2 passes through the fluid supply pipe 65 as shown in FIGS. As will be described later, the hood 63 is rotated and vibrated as described later. That is, the second fluid ejecting means 62, the fluid supply pipe 65, the shaft body 64, and the discharge hole 63d of the hood 63 are discharged. The 1st vibration means 80 is comprised by these.

  Further, as shown in FIGS. 10 and 14, a base 81 is provided in a part of the axial direction in the flexible tube portion 6 c of the insertion portion 6. In the base 81, three discharge ports 81a, 81b, 81c communicating with the inside of the flexible tube portion 6c of the insertion portion 6 are formed. The discharge ports 81a, 81b, 81c are formed at substantially equal intervals in the circumferential direction, and any one of the second supply pipe 77, the third supply pipe 78, and the fourth supply pipe 79 is connected. Has been. As will be described later, when the compressed air F2 is sequentially sent to the second supply pipe 77, the third supply pipe 78, and the fourth supply pipe 89 under the control of the control unit 74, the compressed air F2 is supplied. Are sequentially discharged from the corresponding three discharge ports 81a, 81b, 81c. As a result, the flexible tube portion 6c of the insertion portion 6 vibrates due to the reaction force caused by the compressed air F2 to be discharged. That is, the second vibration ejecting means 82 and the base 81 serve as the second vibrating means 82. Is configured.

Next, the operation of the endoscope apparatus 60 of this embodiment and the details of the control by the control unit 74 of the second fluid ejecting means 62 will be described.
In the present embodiment, the compressed air F1 is ejected by the first fluid ejecting means 5 and the compressed air is also ejected by the second fluid ejecting means 62 in a state where the insertion portion 6 is disposed inside the pipe line S1. F2 is injected.
FIG. 15 shows the valves 76 a of the first supply pipe 76, the second supply pipe 77, the third supply pipe 78, and the fourth supply pipe 79 by the controller 74 in the second fluid ejecting means 62. , 77a, 78a, 79a is a time chart of open / close control. As shown in FIG. 15, the control unit 74 always keeps the valve 76 a of the first supply pipe 76 open when the insertion unit 6 is inserted. For this reason, the compressed air F2 is always supplied from the air compressor 72 to the first supply pipe 76 and is sent to the flow hole 64a of the shaft body 64.

  Here, the connecting holes 64d of the shaft body 64 are formed at three locations at substantially equal intervals in the circumferential direction, while the discharge holes 63d of the hood 63 are formed at four locations at approximately equal intervals in the circumferential direction. For this reason, one of the communication holes 64d of the shaft body 64 and one of the discharge holes 63d of the hood 63 communicate with each other, and the other two communication holes 64d and the three discharge holes 63d do not communicate with each other. The compressed air F2 supplied from the pipe 76 is not discharged. As a result, the compressed air F2 is discharged only from one of the discharge holes 63d communicating with the communication hole 64d. Here, since the discharge hole 63d is inclined to one side in the circumferential direction on the outer peripheral surface side of the hood 63, the compressed air F1 is also discharged while being inclined from the radial direction to one side in the circumferential direction. Thereby, the reaction force acts on the radially inner side and the other circumferential side, and the hood 63 rotates around the axis of the shaft body 64 by the reaction force. Then, when the hood 63 rotates, the combination of the communication hole 64d and the discharge hole 63d communicating with each other changes, and the compressed air F2 is sequentially discharged from each discharge hole 63d to generate a reaction force. For this reason, the hood 63 is rotationally vibrated by the compressed air F2.

  Further, as shown in FIG. 15, the control unit 74 opens and closes the valves 77a, 78a, 79a of the second supply pipe 77, the third supply pipe 78, and the fourth supply pipe 79 in order. Thus, the compressed air F2 is intermittently discharged from the corresponding three discharge ports 81a, 81b, 81c. Thereby, the flexible tube portion 6c of the insertion portion 6 receives the reaction force in order from three different directions by the compressed air F2 at the position where the discharge ports 81a, 81b, 81c are provided, and thus vibrates. It becomes.

  As described above, the frictional resistance of the flange portion 61 is reduced by the rotational vibration by the first vibration generating means 80, and the friction resistance is reduced by the vibration of the insertion portion 6 by the second vibration generating means 82, respectively. And the propulsive force is given by injecting the compressed air F1 from the 1st fluid injection means 5 to the hood 63 of the collar part 61, and the insertion part 6 can be inserted suitably. In particular, in the present embodiment, not only the collar portion 61 but also the insertion portion 6 is vibrated by the second vibrating means 82, so that it is at a middle position of the insertion portion 6 in a pipeline bent at a plurality of locations. Even if there is a possibility that the frictional resistance of the resin may increase, the frictional resistance can be reduced to further improve the insertability.

  In the present embodiment, the compressed air F2 is discharged in order from the discharge ports 81a, 81b, 81c under the control of the control unit 74 as the second vibrating means 82, but is discharged randomly. It is also good. In the first vibration generating unit 80, the compressed air F2 may be discharged and vibrated from different positions in the circumferential direction under the control of a plurality of supply pipes and valves and a control unit. On the other hand, in the second vibration generating means 82, a plurality of outlets may be provided for one supply pipe, and the outlets may be rotated to sequentially discharge the compressed air F2 in correspondence with the supply pipes. good.

  Further, the base 81 having the discharge ports 81a, 81b, 81c is provided in the flexible tube 6c in the insertion portion 6, but is not limited to this, and is formed in the distal end portion 6a or the curved portion 6b. It is good also as what is formed, and it is good also as what is formed in multiple in an axial direction. Moreover, if each discharge port 81a, 81b, 81c of the nozzle | cap | die 81 is formed in the collar part 61 vicinity and the vibration by the compressed air F2 to eject is transmitted to the collar part 61, the 2nd fluid injection means 62 and The first vibration generating means may be constituted by the base 81. In addition, the second supply pipe 77, the third supply pipe 78, and the fourth supply pipe 79 are disposed inside the channel 2a. However, the present invention is not limited to this, and the outer periphery of the insertion portion 6 is not limited thereto. It is good also as a structure which can be arrange | positioned and can discharge the compressed air F2 to a radial direction in a predetermined position.

  FIG. 16 shows a modification of the present embodiment. As shown in FIG. 16, in this modification, a collar portion 86 having a hood 85 projecting to the outer peripheral side is provided on the outer peripheral surface of the distal end portion 6 a of the insertion portion 6. The compressed air F2 supplied to the first supply pipe of the second fluid ejecting means (not shown) is discharged from the opening of the channel 2a to the distal end side at the distal end surface 6d of the distal end portion 6a of the insertion portion 6. . Even if the discharge is performed directly from the channel 2a to the distal end side, the opening of the channel 2a serving as the discharge position is eccentric in the radial direction with respect to the central axis L6 of the insertion portion 6, so that the distal end portion 6a and the distal end The collar portion 86 provided in the portion 6a can be vibrated, and the same effect can be obtained. In the case of this modification, a propulsive force acting on the base end side can be generated by increasing the flow rate of the compressed air F2 by a second fluid ejecting means (not shown), which is suitable for pulling out. .

(Third embodiment)
Next, a third embodiment of the present invention will be described. 17 and 18 show a third embodiment of the present invention. In this embodiment, members that are the same as those used in the above-described embodiment are assigned the same reference numerals, and descriptions thereof are omitted.

  As shown in FIGS. 17 and 18, the endoscope apparatus 100 of this embodiment includes a collar portion 101 provided at the distal end portion 6 a of the insertion portion 6, and a flexible exterior that is sheathed on the insertion portion 6. A tube 102 and second fluid ejecting means 103 that ejects compressed air F2 as a fluid are provided. As shown in FIG. 18, the flange 101 has a hood 104 that is substantially hemispherical and has a recess 104 a formed on the proximal end side. The hood 104 has a through-hole 104b in which a female screw is formed on the inner peripheral surface, and is screwed into a male screw 6e formed on the outer peripheral surface of the distal end portion 6a of the insertion portion 6. The outer tube 102 is fastened to the distal end portion 6 a of the insertion portion 6 by being fastened by a fixing thread 102 a at each of the distal end portion and the proximal end portion. Further, the inner diameter of the outer tube 102 is set larger than the outer diameter of the insertion portion 6, a gap 102 b is formed as a flow path for the compressed air F 2, and the discharge communicates from the inner peripheral surface to the outer peripheral surface. A large number of holes 102c are irregularly formed in the circumferential direction and the axial direction.

  As shown in FIG. 17, the second fluid ejecting means 103 includes an air compressor 105 that can exhaust the compressed air F <b> 2, and the compressed air discharged from the air compressor 105, as with the first fluid ejecting means 5. An air tube 106 that guides F2 and a cock 107 that is provided at the distal end portion of the air tube 106 and can switch the presence or absence of injection of the compressed air F2 are provided. The cock 107 is connected to the proximal end portion of the outer tube 102 and communicates with the gap 102b so that the compressed air F2 can be delivered. When the cock 107 is operated to send the compressed air F2 to the gap 102b, the compressed air F2 is discharged in the radial direction irregularly in the circumferential direction and the axial direction of the insertion portion 6 by the discharge hole 102c of the outer tube 102. Will be. For this reason, the insertion part 6 can be vibrated by the reaction force by compressed air F2 over the whole range of the exterior tube 102 in which the discharge hole 102c was formed. That is, in the vicinity of the flange portion 101, the vibration of the insertion portion 6 is transmitted to vibrate the flange portion 101. That is, the outer tube 102 and the second fluid ejecting means 103 constitute the first vibrating means 108. Yes. In the other range, the insertion portion 6 is vibrated as described above, that is, the outer tube 102 and the second fluid ejecting means 103 also constitute the second vibrating means 109.

  Then, if the compressed air F1 from the first fluid ejecting means 5 is jetted to the flange portion 101, the frictional resistance is reduced by the first vibrating means 108 and the second vibrating means 109, and the insertion is performed. Propulsive force will be given to the part 6, and the insertion part 6 can be inserted suitably. In the present embodiment, the exterior tube 102 is exteriorized over the entire insertion portion 6, but the present invention is not limited to this and may be partially exteriorized. Further, the discharge hole 102c of the outer tube 102 may be formed in a part of the axial direction, or the diameter of the discharge hole 102c may be changed in the axial direction. For example, regarding the diameter of the discharge hole 102c, the proximal end side may be reduced and the distal end side may be increased. By doing so, the compressed air F2 from the second fluid ejecting means 103 becomes difficult to be discharged from the discharge hole 102c on the base end side where the pressure is high, while being discharged from the discharge hole 102c on the tip side where the pressure is low. As a result, the compressed air F2 can be more uniformly discharged from the discharge hole 102c from the base end side to the front end side.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described. 19 and 20 show a fourth embodiment of the present invention. In this embodiment, members that are the same as those used in the above-described embodiment are assigned the same reference numerals, and descriptions thereof are omitted.

  As shown in FIGS. 19 and 20, the endoscope apparatus 110 of this embodiment is provided in a substantially tubular and flexible guide tube 111 that is sheathed on the insertion portion 6, and a distal end portion 6 a of the insertion portion 6. And a second flange 112 that is a tube-side flange provided on the outer peripheral surface of the distal end of the guide tube 111. The guide tube 111 is externally provided with a gap in the insertion portion 6 so that the insertion portion 6 can advance and retreat inside. The 1st collar part 3 is the same as that of 1st Embodiment, and has the hood 20 projecting to the outer peripheral side, and the eccentric fixing | fixed part 21 which fixes the hood 20 to the insertion part 6 so that eccentric rotation is possible. . Similarly, the second flange portion 112 has a hood 113 that projects to the outer peripheral side of the guide tube 111 and an eccentric fixing portion 114 that fixes the hood 113 to the guide tube 111 so as to be eccentrically rotatable. Since the eccentric fixing portion 114 is configured by a bearing member and a fixing ring similarly to the eccentric fixing portion 21, a detailed description thereof is omitted.

  In the endoscope apparatus 110 of this embodiment, the compressed air F1 is sent between the guide tube 111 and the subject S by the fluid ejecting means 5 in a state where the insertion portion 6 and the guide tube 111 are disposed in the subject S. If it does, compressed air F1 will be injected by the 2nd collar part 112. FIG. In addition, a part of the compressed air F <b> 1 that passes outside the second flange 112 is further injected into the first flange 3. As a result, the first flange 3 and the second flange 112 rotate and vibrate to reduce the frictional resistance, and a propulsive force is applied to the guide tube 111 and the insertion portion 6. For this reason, the guide tube 111 and the insertion part 6 will be inserted integrally by fixing the guide tube 111 and the insertion part 6 on the base end side.

  Further, in a state where only the guide tube 111 is fixed on the proximal end side, the compressed air F1 from the fluid ejecting means 5 is exchanged between the guide tube 111 and the subject S or between the guide tube 111 and the insertion portion 6. If it sends out, compressed air F1 will be injected by the 1st collar part 3. FIG. As a result, the first flange 3 rotates and vibrates to reduce the frictional resistance, and a thrust is applied to the insertion portion 6. At this time, since the guide tube 111 is sheathed on the insertion portion 6, the insertion portion 6 can be preferably inserted with the guide tube 111 as a guide, further reducing the frictional resistance. For this reason, for example, as shown in FIG. 17, when the guide tube 11 and the insertion portion 6 are inserted as a unit and a certain amount is inserted, and then the frictional resistance increases through a plurality of curved portions S5, the insertion portion 6 By inserting only the guide tube 111, the guide tube 111 can be inserted further.

(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described. FIG. 21 shows a fifth embodiment of the present invention. In this embodiment, members that are the same as those used in the above-described embodiment are assigned the same reference numerals, and descriptions thereof are omitted.

  As shown in FIG. 21, in the endoscope apparatus 120 of this embodiment, the fluid ejecting means 121 is interposed between the air compressor 12, the air tube 13, and the air compressor 12 and the air tube 13, so that the air The regulator 122 which adjusts the pressure of the compressed air F1 discharged | emitted from the compressor 12 to the air tube 13 and the control part 123 which controls the air compressor 12 and the regulator 122 are provided. In addition, since the other structure of the endoscope apparatus 120 is the same as that of 1st Embodiment, description is abbreviate | omitted. Here, the control unit 123 controls the regulator 122 so that the pressure of the compressed air F1 discharged to the air tube 13 is changed in size when the cock 14 at the tip of the air tube 13 is opened. In this way, by changing the pressure of the compressed air F <b> 1, the propulsive force applied to the hoods 20 of the first flange part 3 and the second flange part 4 also changes in magnitude. For this reason, the 1st collar part 3 and the 2nd collar part 4 will vibrate also to an axial direction, and friction resistance can further be reduced and the insertion part 6 can be inserted more suitably.

  In addition, although the control part 123 shall change the pressure of the compressed air F1 by controlling the regulator 122, you may make it control the compressor 12 and discharge the compressed air F1 intermittently. In the present embodiment, the pressure of the compressed air F1 is automatically changed by the control unit 123. However, when the observer repeatedly switches between opening and closing the cock 14, the compressed air F1 is similarly intermittently injected. Thus, the first collar 3 and the second collar 4 can be vibrated.

  As mentioned above, although embodiment of this invention was explained in full detail with reference to drawings, the concrete structure is not restricted to this embodiment, The design change etc. of the range which does not deviate from the summary of this invention are included.

  In each embodiment, the fluid ejected by the first fluid ejecting unit and the second fluid ejecting unit has been described as compressed air, but the present invention is not limited to this, and various types of gases and liquids are used. Can be selected.

1 is an overall configuration diagram showing an endoscope apparatus according to a first embodiment of the present invention. In the endoscope apparatus of the 1st Embodiment of this invention, it is the side view which fractured | ruptured a part which shows the detail of the insertion part of an endoscope, and a collar part. It is a side view showing details of an insertion part of an endoscope, and a collar part in an endoscope apparatus of the 1st modification of a 1st embodiment of the present invention. In the endoscope apparatus of the 2nd modification of the 1st Embodiment of this invention, it is a perspective view which shows the insertion part of an endoscope, and the detail of a collar part. In the endoscope apparatus of the 2nd modification of the 1st Embodiment of this invention, it is the side view which fractured | ruptured the part which shows the detail of the insertion part of an endoscope, and a collar part. In the endoscope apparatus of the 3rd modification of the 1st Embodiment of this invention, it is the side view which fractured | ruptured a part which shows the detail of the insertion part of an endoscope, and a collar part. In the endoscope apparatus of the 4th modification of the 1st Embodiment of this invention, it is the side view which fractured | ruptured a part which shows the detail of the insertion part of an endoscope, and a collar part. In the endoscope apparatus of the 5th modification of the 1st Embodiment of this invention, it is the side view which fractured | ruptured a part which shows the detail of the insertion part of an endoscope, and a collar part. In the endoscope apparatus of the 5th modification of the 1st Embodiment of this invention, it is a front view of the front-end | tip part of the insertion part of an endoscope. It is a whole block diagram which shows the endoscope apparatus of the 2nd Embodiment of this invention. In the endoscope apparatus of the 2nd Embodiment of this invention, it is the side view which fractured | ruptured the part which shows the detail of the insertion part of an endoscope, and a collar part. It is sectional drawing in the cutting line AA of FIG. It is a block diagram which shows the detail of the main-body part of the 2nd fluid injection means in the endoscope apparatus of the 2nd Embodiment of this invention. It is sectional drawing which shows the detail of a nozzle | cap | die part in the endoscope apparatus of the 2nd Embodiment of this invention. It is a time chart figure showing details of control by a control part of the 2nd fluid ejecting means in an endoscope apparatus of a 2nd embodiment of the present invention. In the endoscope apparatus of the modification of the 2nd Embodiment of this invention, it is a perspective view which shows the detail of an insertion part and a collar part. It is a whole block diagram which shows the endoscope apparatus of the 3rd Embodiment of this invention. In the endoscope apparatus of the 3rd Embodiment of this invention, it is the side view which fractured | ruptured the part which shows the detail of the insertion part of an endoscope, and a collar part. It is a side view of the endoscope apparatus of the 4th Embodiment of this invention. It is a perspective view which shows the detail of the insertion part of an endoscope, and a collar part in the endoscope apparatus of the 4th Embodiment of this invention. It is a whole block diagram which shows the endoscope apparatus of the 5th Embodiment of this invention.

Explanation of symbols

1, 60, 100, 110 Endoscope device 2 Endoscope 3, 35, 45, 50 First buttocks (buttock)
4 Second buttocks (buttock)
5 Fluid ejecting means (first fluid ejecting means)
6 Inserting portion 21 Eccentric fixing portion 25, 39, 49, 59 Exciting means (first exciting means)
37, 47, 58 Shaft (Eccentric fixing part)
38 Fluid receiving portion 48, 52 Rotation drive portion 61, 85, 101 ridge portion 62, 103 Second fluid ejecting means 80, 106 First vibration means 82, 107 Second vibration means 111 Guide tube 112 Second Buttock (tube buttock)
F1, F2 Compressed air (fluid)
L6 Center axis of insertion part S Subject

Claims (3)

An endoscope composed of a flexible insertion section that can be inserted into the inside of a duct as a subject;
A first fluid ejecting means disposed on the proximal end side of the duct and ejecting fluid into the duct from the proximal end side to the distal end side of the endoscope; and the insertion of the endoscope And a flange portion that is provided at a distal end portion that is disposed on the distal end side and projects to the outer peripheral side and that receives the fluid injected into the inside of the pipe, and that vibrates the flange portion. Means,
A second vibrating means disposed on the proximal end side of the insertion portion and provided in a flexible tube portion having flexibility, and vibrates the insertion portion;
Bei to give a,
The first and second vibration generating means are connected to an air compressor capable of discharging the fluid,
The first vibrating means is
A second fluid ejecting means for causing fluid to be ejected from the outer peripheral surface of the flange toward the radial direction of the insertion portion and rotating the flange;
The first vibrating means is
A hood of the buttocks with a through hole formed in the axial direction;
A flow hole that communicates in the axial direction with a substantially tubular member is formed, and a shaft body that is rotatably inserted into the base end side of the through hole;
A fluid supply pipe connected to a proximal end portion of the shaft body;
Comprising
In the shaft body, three communication holes communicating from the outer periphery to the flow hole are formed at equal intervals in the circumferential direction,
In the hood, four discharge holes communicating from the through hole to the outer peripheral surface are formed at equal intervals in the circumferential direction at a position coinciding with the communication hole of the shaft body in the axial direction.
The four discharge holes are formed in a radial direction from the through hole to the outer peripheral surface side, and each of the four discharge holes is inclined to one side in the circumferential direction in the vicinity of the outer peripheral surface, and opens to the outer peripheral surface . Endoscopic device. The endoscope apparatus according to claim 1 , wherein
The buttocks
An endoscope apparatus, wherein a plurality of the insertion parts are provided in an axial direction of the insertion part. The endoscope apparatus according to claim 1 or 2 ,
A substantially tubular and flexible guide tube that is sheathed on the insertion portion of the endoscope;
An endoscope apparatus comprising a tube side collar portion provided on the guide tube and projecting to the outer peripheral side.

Images