JP2003093330A - Endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize an endoscope with excellent curve operability even when only a first curve part is curved as moving. SOLUTION: The endoscope comprises a first curve part 24 that constituted with a plurality of curve pieces 31 continuously and rotatably connected to a business end side, a second curve part 25 comprising this curve part 24 arranged on an at-hand side and the curve pieces 31 rotatably connected, a curve blade 32 that covers the plurality of curve pieces 31 that constitute the first curve part 24 and the second curve part 25, and a curve rubber 33 that covers this blade 32. The thickness of curve rubber 33a that covers the first curve part 24 is the same as the thickness of a curve rubber usually employed for the endoscope. Curve rubber 33b that covers the second curve part 25 has a thickness a little thicker than the thickness of the second curve part 25.

Description

Description: BACKGROUND OF THE INVENTION [0001] The present invention relates to a first bending portion and
An endoscope having two bending portions of a second bending portion
You. 2. Description of the Related Art In recent years, endoscopes have been used in medical and industrial fields.
Widely used in. The above endoscope, especially if the insertion section is soft
The endoscope can be placed inside a bent machine, inside the
Can be inserted. The above endoscope is three-dimensionally complicated
Insert a slender insertion part into the bent thin lumen along its shape
It is designed to be inserted. For this reason, the endoscope
Requires that the insertion portion be three-dimensionally and finely bent. For example, Japanese Utility Model Publication No. 47-12705 discloses
The endoscopes described are multiple at the distal end of the elongated
A first bending portion (hereinafter, referred to as a first bending portion)
1 curved portion) and a second curved portion provided on the proximal side of the first curved portion.
The two curved portions of the curved portion (hereinafter, the second curved portion) are soft
That is provided continuously on the tip side of a flexible tube
I have. An endoscope provided with two bending portions in the insertion portion,
The degree of freedom at the tip of the insertion section is increased, and bending operability can be improved.
is there. [0004] The above two curved portions are
The conventional endoscope that has
The bending operation using only the first bending portion that has been shaken is the main operation.
You. The conventional endoscope is provided on the base end side.
It is conceivable that the second curved portion is used as an auxiliary
You. [0005] However, the above-mentioned conventional endoscope has the following problems.
When comparing the two curved portions with the flexible tube portion,
There is no waist (hardness) in the curved part. For this reason, the above-mentioned conventional endoscope
When only the first curved portion is used, the first curved portion
For the bending operation of the section,
The followability of each of the number of joint pieces is poor,
Difficult to use. Therefore, the above two curvatures
A conventional endoscope with a section has poor bending operability.
There was a problem of getting around. The present invention has been made in view of the above circumstances.
And also bends when only the first bending portion is being bent.
An object of the present invention is to provide an endoscope with good operability. [0007] In order to achieve the above object,
In the present invention, a plurality of bending pieces are rotatably connected to the distal end side.
A first curved portion configured as described above, and a hand side of the first curved portion
A plurality of bending pieces are arranged so as to be rotatably connected to each other.
2 curved portion and the outer periphery of the first curved portion and the second curved portion.
An endoscope with an insertion section formed by coating with curved rubber
And wherein the curved rubber is a portion covered by the first curved portion.
At least a part of the thickness of the second curved portion is covered with the second curved portion.
Characterized by being formed thinner than the thickness of the part to be
I have. With this configuration, only the first bending portion is operated to bend.
This realizes an endoscope with good bending operability even when the endoscope is in operation. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention;
An embodiment will be described. 1 to 12 show one embodiment of the present invention.
FIG. 1 shows an endoscope according to an embodiment of the present invention.
FIG. 2 is an overall configuration diagram showing the overall configuration of the endoscope device obtained in FIG.
FIG. 3 is a cross-sectional view showing a curved portion of the endoscope insertion portion of FIG.
FIG. 4 is a sectional view showing a modification of the bending portion, and FIG.
FIG. 5 is a cross-sectional view showing a modification of FIG.
FIG. 6 is a schematic diagram showing the structure of the coil pipe.
FIG. 7 is an external view showing the vicinity of a grip portion of the endoscope, and FIG.
The respective operation axes of the first bending operation unit and the second bending operation unit
FIG. 9 is an external view showing the vicinity of a gripping portion of an endoscope which is orthogonal, FIG.
Endoscope gripping with two angle knobs on the bending operation unit
FIG. 10 is an external view showing the vicinity of the unit, and FIG.
FIG. 11 shows the cover of the sub-operation knob shown in FIG.
FIG. 12 is a configuration diagram showing a state in which the storage device is removed, and FIG.
FIG. 12A is a configuration diagram showing the structure of the hopper, and FIG.
Stopper using stopper adjustment screw hole formed by
Diagram and diagram of a stopper that is configured by fixing screws to a jitter
12 (b) shows the state of FIG.
Turn it over and use it to adjust the stopper formed on the jitter
When the angle can be adjusted at half the pitch of the screw hole interval
FIG. 4 is a configuration diagram of the stopper of FIG. As shown in FIG. 1, one embodiment of the present invention is provided.
The obtained endoscope device 1 is an electronic device provided with an imaging unit (not shown).
An endoscope (hereinafter simply referred to as an endoscope) 2 and detachable from the endoscope 2
A light source that is freely connected and supplies illumination light to the endoscope 2.
The device 3 is detachably connected to the endoscope 2 and
Controlling the image pickup means of the endoscope 2;
And output a standard video signal.
A video processor 4 and a video processor 4
Monitor 5 for displaying the endoscope image obtained by the signal processing
Mainly composed. The video processor 4 includes
VTR deck, video printer, video display
And image file recording devices can be connected.
ing. The endoscope 2 is inserted into a site to be observed.
An elongated insertion section 11 and a base end of the insertion section 11
It is possible to perform the bending operation of the first and second bending portions described later.
A grip portion 12 having an operation portion 12a;
A signal that extends from the side and connects to imaging means (not shown)
Built-in cables and light guides for transmitting illumination light
Universal code 13 and this universal code
13, the light source device 3 and the video processor.
A connector section 14 detachably connected to the processor 4
are doing. The insertion portion 11 has a tip provided at the tip.
A portion 21 and a bendable portion provided at the rear of the tip 21
And a rear portion of the curved portion 22,
Elongate and flexible, formed from a flexible tubular member
It is constituted by connecting the flexible tube portion 23 continuously. The tip 21 is a CCD as an image pickup means.
Etc. and a solid-state image sensor (not shown)
An imaging unit incorporating a circuit board for driving, etc.,
Transmits illumination light to illuminate the observation target site in the body cavity
Built-in light guide (not shown)
You. The bending portion 22 has a bending portion (hereinafter referred to as a bending portion) on the distal end side.
Bottom, referred to as a first curved portion) 24, a curved portion on the hand side (hereinafter, referred to as a first curved portion)
25) and two curved portions.
ing. First, the first bending portion 2 will be described with reference to FIGS.
4 and the structure of the bending portion 22 composed of the second bending portion 25
explain. As shown in FIG. 2, the first curved portion 24 and the second
The bending portion 25 rotatably moves the plurality of bending pieces 31 respectively.
A thin wire or the like is connected to the plurality of bending pieces 31.
While covering the curved braid 32 woven into a cylindrical shape,
A curved rubber 33 is placed on the curved blade 32.
You. In FIG. 2, φA and φB are the first curves, respectively.
Inner diameter of the bending piece 31 constituting the second bending portion 25 and the second bending portion 25
Is shown. Here, φA and φB satisfy φA <φB.
Set in a relationship. That is, the first bending portion 24,
The second bending in which the number of built-in objects is larger than that of the first bending portion 24
Between the inner part of the bending piece 31 and
The ratio is about the same. With this configuration, the endoscope
2 indicates the movement of both bending portions 24 and 25 during the bending operation.
It becomes possible to make it smooth. The curved rubber 33 covers the first curved portion 24.
A portion to cover and a portion to cover the second curved portion 25
Therefore, if the portion related to the first bending portion 24 is
It is formed thinner than such a part. That is, the bay of the portion related to the first curved portion 24
The thickness of the curved rubber 33a is the same as that of the bay used for an endoscope.
Construct with the same thickness as the curved rubber,
Of the curved rubber 33b is slightly thicker than that
Configure. Thereby, the endoscope 2 is connected to the first bending portion 24.
In the inspection using only the first bending portion 24,
The follow-up to the movement is improved, and the bending operability is improved.
You. Here, as shown in FIG.
A thin first curved rubber 33 is provided at a portion corresponding to the first curved portion 24.
a ′, and another portion is applied to the portion related to the second curved portion 25.
It may be configured to cover the thick second curved rubber 33b '.
good. That is, the first bending portion 24 and the second bending portion 25
Can be covered with two types of curved rubber separately if necessary
good. As shown in FIG. 4, the endoscope 2 has a first
In the front portion of the curved portion 24, a thin curved rubber 33 is provided.
a ″, and after the rear end side of the first curved portion 24
It may be covered with a curved rubber 33b ″ thicker than the front side.
No. In particular, in the endoscope, the bending section bends from the tip side as much as possible
Since the operability is better when the operation is started, the front of the first bending portion 24 is
By making only the side portions thin, the first curved portion 24
The operability at the time of the inspection using only one is further improved. The endoscope 2 is placed on the second bending portion 25.
The portion of the curved rubber material that is applied to the first curved portion 24
A material of a material harder than the curved rubber may be used. this
In the endoscope 2 having the configuration, the curved rubber of the second curved portion 25 is thickened.
Prevents the outer diameter of the curved portion 22 from becoming thicker
it can. Alternatively, the endoscope 2 is placed on the second bending portion 25.
Part of the curved blade 32 that is to be applied to the first curved portion 24
By making it harder than the curved blade 32,
A similar effect is obtained. The curved blade 32 and the curved
The first bending portion 24 and the second bending portion 25
May be covered over the entire length of the curved portion 22 including
Also, separately cover the first bending portion 24 and the second bending portion 25
Is also good. The first bending portion 24 is formed by
First bending operation for pulling and bending the first bending portion 24
A wire (hereinafter, referred to as a first wire) 34 is extended.
You. Similarly, the second bending portion 25 is formed by
2nd bending operation for pulling and bending the bending portion 25
A wire (hereinafter, referred to as a second wire) 35 is extended.
You. The first wire 34 is connected to the second bending portion 2.
5 inside the first coil pipe 36 fixed near the tip side.
As described above, a first bending operation unit described later through the inside of the insertion unit 11
42. On the other hand, the second wire 35
Second coil pipe 3 fixed to the distal end side of flexible tube portion 23
7, through the insertion portion 11, and a second curved portion described later.
It is connected to the operation unit 44. FIG. 5 is a schematic view when the curved portion is viewed from above.
It is. Coil pipe for first bending portion fixed to connection portion
Is at an angle to the longitudinal axis of the endoscope axis
Attach. Thereby, the endoscope 2 is fixed behind the connecting portion.
The operation wire for the second bending portion that is determined is connected to the operation wire for the first bending portion.
It becomes possible to mount the ear in the same straight line. this
Thereby, the first bending portion 24 and the second bending portion 25 are
Sometimes, when operating, it is necessary to operate
Good nature. The first coil pipe 36 and the first coil pipe 36
Coil pipe used for the second coil pipe 37 and the like
As shown in FIG. 6, a thin wire is tightly wound in a pipe shape.
It has a good structure. However, this coil pipe
May have a shortened overall length due to compressive load due to its structure.
You. For this reason, the wire constituting the second coil pipe 31
The wire diameter of the first coil
The pipe 36 is formed thicker than the wire diameter of the wire.
Thereby, the second coil pipe for the second bending portion 25
37 is from the first coil pipe 36 for the first bending portion 24
Also the wire diameter is large and it is difficult to compress. Therefore, the second bending portion 2
5 can be used even when a force greater than that of the first bending portion 24 is applied.
The shrinkage of the pipe does not occur, so the bending angle
It does not become smaller than the initial state. In the present embodiment, the above-described first bending
Part 24 and the second bending part 25 are bent independently of each other.
The operation unit 12a of the grip unit 12 is operable.
First bay for performing the bending operation of the first bending section 24
The music operation section 42 and the bending operation of the second bending section 25 are performed.
And a second bending operation section 44 for providing the same. That is, as shown in FIG.
The operation section 12a performs a bending operation of the first bending section 24.
Operating knobs 42a and 42a 'for
A first fixing for fixing the operation knob 42a at a desired rotation position
First bending operation section 42 provided with fixed levers 42b, 42b '
Video freeze and release of the observed image
Remote switch for instructing the
An electric switch section 43 provided with a switch 43a;
Second bending operation knob 44 for performing the bending operation of the section 25
a and this second bending operation knob 44a is fixed at a desired position.
Bending operation provided with a second fixed lever 44b for performing
A portion 44 is provided. Here, the bending operation knob 42a is connected to the first
No. for bending the bending portion 24 in the UP / DOWN direction.
Is. In addition, the bending operation knob 42a 'is connected to the first bending portion.
24 to bend in the RIGHT / LEFT direction.
Is. The first fixed lever 42b is operated.
The bending operation knob 42a is held at a desired rotation position.
Lever. Also, the first fixed lever 42b '
To hold the bending operation knob 42a 'at a desired rotation position
The lever. The first bending operation section 42 has an air supply /
Air supply / water supply button 42c for performing water supply operation and suction
A suction button 42d for performing an operation is provided.
You. Using the endoscope 2 configured as described above,
Perform an endoscopy. When performing a bending operation, generally, the surgeon
The gripper 12 is gripped by the left hand. In this case, for example,
The person holds the grip 12 with the base of the left thumb and the ring finger and the little finger.
When the thumb and buttons are not operated.
Bending operation knob 42a and second bending by index and middle fingers
The operation of the operation knob 44a is performed. In addition, with the index finger, the middle finger
The operated buttons are the remote switch 43a,
There are an air / water supply button 42c, a suction button 42d, and the like. First, the operator performs a bending operation of the first bending portion 24.
At the base of the left thumb, the ring finger and the little finger.
With the holding part 12 supported, the thumb or
The bending operation knob 42a is operated with the index finger or the middle finger. The surgeon operates the second bending portion 25 to bend.
Is performed, the right hand not holding the grip 12
(2) The operation of the bending operation knob 44a is performed. The surgeon mentioned above
With your thumb, index finger, or middle finger out of reach
The second bending operation knob 44a may be extended to operate.
No. Here, when the remote switch 43a is operated
When performing endoscopic procedures, the first fixed lever 4
2b, 42b 'and the operation of the second fixed lever 44b.
And the bending operation knobs 42a and 42a 'and the second bending operation knob
44a were fixed at desired positions, and the thumb was released.
Operation while maintaining the desired curved shape in the state
Is also possible. The second bending operation section 44 is provided in the first bay.
Arranged between the music operation unit 42 and the electric switch unit 43
Operation when operating the bending operation knob 42a.
Finger can easily touch the second bending operation knob 44a.
Absent. In FIGS. 1 and 7, the second bending operation knob is shown.
The knob 44a is illustrated in the shape of a knob, but is limited to this shape.
It is not necessary to change the degree of freedom in the bending direction as shown in FIG.
A bending operation knob shaped like a bending operation knob 44c
It may be. In addition, the first bending operation section 42 and the second bending
The positional relationship between the operation axis and the operation unit 44 is shown in FIG.
Such a parallel positional relationship may be used, or as shown in FIG.
A configuration in which an angle is provided may be used. In FIG.
The operation axes of the first bending operation section 42 and the second bending operation section 44 are straight.
This shows an example of intersection. Also, how the second bending portion 25 bends
When the direction is four places, the second bending operation is performed as shown in FIG.
By providing two bending operation knobs 44d in the working unit 44,
It is also possible to respond to a bending operation in four directions. As a result, the endoscope 2 of the present embodiment
Operate each bending section of the first bending section 24 and the second bending section 25 independently
It is possible to operate each bending section by normal bending operation
Can be treated the same as Therefore, in the endoscope 2 of the present embodiment,
Improves the bending operability. Further, the endoscope 2 of the present embodiment is provided in the second bay.
The music operation section 44 is provided at a location away from the first bending operation section 42.
Normal operation by operating the first bending operation section 42
If the second bending operation unit 44 is in the way during the operation of the endoscope
Equivalent to a commonly used endoscope with one curved section
A simple bending operation is possible. Further, the endoscope 2 according to the present embodiment
An electric switch is provided between the bending operation section 44 and the first bending operation section 42.
By providing a contact portion 43 and separating the two, normal endoscope
In addition to not impairing the mirror operability, the first bending operation section 42
And the second bending operation unit 4 when the electric switch unit 43 is operated.
There is no erroneous operation of 4. The endoscope 2 of the present embodiment has a first bay.
Operation of each of the music operation section 42 and the second bending operation section 44
By making an angle to the axis, the first bending operation section 42 is gripped.
Operation when operating the second bending operation section 44 with the opposite hand
Workability improves. Note that the endoscope 2 of the present embodiment is
Originally developed for an electronic endoscope with a built-in imaging device at the tip 21
Image guide, but insert an image guide not shown
The image guide is inserted through the section 11 and guided by the image guide.
A structure in which a body image is captured by an imaging device built in the operation unit 12a.
Electronic endoscope or subject guided by an image guide
The image can be observed with an eyepiece provided above the operation unit 12a.
The present invention may be applied to any optical endoscope. In any case
Bay composed of both the first curved portion 24 and the second curved portion 25
Any endoscope provided with the curved portion 22 may be used. Next, the schematic structure of the operation unit will be described with reference to FIG.
Is shown. FIG. 10 is a schematic diagram of the operation unit 12a shown in FIG.
It is a figure showing structure. As shown in FIG.
Has a jitter 50 disposed therein. This Jita 50
It is a skeletal member constituting the operation unit 12a. This Jita 5
0 is the sub-operation part exterior member 50a, the main operation part exterior member 50
b, The grip exterior member 50c is mounted. The jitter 50 is connected to the first bending operation section 4.
The first support column 51 stands upright at a position where the second support 2 is formed. This
The first support column 51 includes an up-down sprocket 51a and left and right sprockets 51a.
Sprocket 51b is provided. This first pillar
51 is disposed outside the main operation unit exterior member 50b.
With the turning operation of the bending operation knobs 42a and 42a '
Respectively. The above and below sprockets 51a and left and right
Each of the sprockets 51b includes an upper and lower chain 52.
a, left and right chains 52b are attached. this
Up and down sprocket 51a and left and right sprocket 5
1b is a connecting member at the end of each chain
Through the lower connecting member 53a and the left and right connecting members 53b
The first wires 34 respectively drawn out from the insertion portion 11,
34 'are connected. On the other hand, the jitter 50 is used for the second bending operation.
Attached to the first support column 51 at the position where the working section 44 is configured
As a result, a second support 55 is erected. This second support 55
Is attached to the tip end protruding from the jitter 50.
A ram 56 is provided. This second support 55 is
The second bay located outside the sub-operation unit exterior member 50a
It turns with the turning operation of the music operation knob 44a.
ing. The sub-operation unit drum 56 includes a sub-operation wire.
57 are attached. End of this sub-operation wire 57
The portion is connected to the second wire 35 via the auxiliary vertical connecting member 58.
It is connected. Thus, bays that are relatively frequently used
The music operation knobs 42a and 42a '
And a second bending operation knob.
44a has a structure using a drum having a simple structure. The secondary operation section exterior member 50a is used for the second bending operation.
Cover the surface opposite to the surface to which the knob 44a is attached.
-60 is attached. Secondary operation part exterior member 50a
By removing the cover 60, the sub-operation unit
The rotation angle of the drum 56 can be adjusted. The cover 60 is provided with a projection for fixing a jitter.
60a is provided, and this cover 60 is attached.
At the same time, the jitter 50 is sandwiched and fixed. FIG. 11 shows a state where the cover 60 is removed.
The sub-operation unit exterior member 50a and the jitter 50 are
The sub-operation unit exterior member is fitted at the distal end of the sub-operation unit.
50a rotation stop and improved resistance to external forces
Let me. The guide 50 of the auxiliary operation wire 57 is
A wire guide 61 serving as a wire is attached. this
The wire guide 61 simultaneously connects the sub-operation unit exterior member 50a.
It is fixed. Adjustment of the rotation angle of the sub-operation unit drum 56
The stopper adjusting screw hole 62 provided in the
This is performed by attaching the stopper 63. Do
When the ram rotates, this stopper 63 is
A projection against the stopper 56a provided on the base 6
Thus, the rotational position is regulated. Referring to FIG. 12, the structure of the stopper will be described.
Will be described. The jitter 50 is as shown in FIG.
A plurality of stopper adjusting screw holes 62 are spaced at equal intervals
Is formed. The stopper 63 is provided with the stopper adjusting via.
The screw is fixed to the jitter 50 in the through hole 62. Use
By changing the position of the topper adjustment screw hole 60,
Drum 56 has a stopper projection 56a abutting position.
In other words, the angle can be adjusted. Here, the rotation angle of the sub-operation unit drum 56
Is adjusted when the interval between the stopper adjustment screw holes 62 is θ.
The distance between one end of the screw hole 63a of the stopper 63 and the end
Is θ, and the distance between the other screw hole 63a and the end is θ + 1.
/ 2 · θ. This allows the rotation angle to be
The adjustment is performed as shown in FIG.
The stopper adjustment screw can be used by turning it over.
This is possible with a pitch that is half the interval between the holes 62. Note that the present invention is limited to the above-described embodiment.
It is not limited and does not depart from the gist of the present invention.
Various modifications can be made in the box. [Supplementary Notes] The above-described aspects of the present invention as described in detail above
According to the embodiment, the following configuration can be obtained.
You. (Additional Item 1) Turning a plurality of bending pieces toward the tip end
A first bending portion which is movably connected to the first bending portion;
Section, and a plurality of bending pieces are connected in a rotatable manner.
Second curved portion, and the first curved portion and the second bay
Equipped with an insertion part formed by coating curved rubber on the outer periphery of the curved part
In the endoscope, the curved rubber is attached to the first curved portion.
At least a part of the thickness of the part to be covered is
Formed thinner than the thickness of the part covered by the curved part
An endoscope characterized by the following. (Additional Item 2) Bending operation of the first bending portion
Performing the bending operation of the first bending operation unit and the second bending unit.
A second bending operation unit to be performed is connected to a base provided on the base end side of the insertion unit.
Holding part, and the first bending part and the second bending part
Additional features characterized in that the bending operation can be performed independently of each other
Item 2. The endoscope according to Item 1. (Appendix 3) Operation of the first bending operation section
The axis and the operation axis of the second bending operation section are at different positions.
3. The endoscope according to claim 2, wherein the endoscope is disposed. (Additional Item 4) The first bending operation section and the
An electric switch for performing a predetermined operation is provided between the switch and the second bending operation unit.
3. The method according to claim 3, wherein the switch portion is disposed.
Endoscope. (Additional Item 5) The first bending operation portion is
The second bending operation unit is disposed on the distal end side of the operation unit,
Additional note, which is arranged on the base end side of the operation unit
Item 4. The endoscope according to item 3. (Additional Item 6) Operation of the first bending operation section
The axis and the operation axis of the second bending operation section are arranged substantially in parallel.
4. The endoscope according to claim 3, wherein the endoscope is placed. (Additional Item 7) Operation of the First Curving Operation Unit
The axis and the operation axis of the second bending operation section are arranged substantially perpendicularly.
4. The endoscope according to claim 3, wherein the endoscope is placed. (Additional Item 8) The electric switch section is
The first bending operation unit and the second bending operation unit are separated from each other.
5. The endoscope according to claim 4, wherein (Additional Item 9) Operation of the first bending operation section
The part and the operation part of the second bending operation part are in the same direction.
Item 5 in Additional Item 5, characterized in that they are arranged facing each other.
Endoscope. (Appendix 10) On the tip side of the elongated insertion portion
A first bending portion configured by connecting a plurality of bending pieces in a freely rotatable manner.
And a plurality of bending pieces are arranged on the near side of the first bending portion.
A second curved portion configured to be rotatably connected to the first bay;
A first bending operation unit for performing a bending operation on a curved portion and the second bending operation
A second bending operation unit for performing a bending operation of the unit, and the first bending operation
The first bending portion is pulled and relaxed by the bending operation of the working portion.
Of the first operation wire and the second bending operation portion for bending
The second bending part is bent by being pulled and relaxed by bending operation.
An endoscope having a second operation wire for causing
A sprocket provided on the operation shaft of the first bending operation unit,
Wound on a sprocket and connected to the first operating wire
A bending operation of the first bending operation unit.
The operation is transmitted to the first operation wire, and the first operation wire
A first traction / relaxation mechanism for traction / relaxation of the second bending operation
The second operation wire is wound around the operation shaft of the working unit.
The second bending operation section is configured by a drum and
Transmitting the second operation wire to the second operation wire
A second traction / relaxation mechanism for relaxation.
Endoscope. According to the present invention, as described above,
Good bending operability even when bending only one bending part
A good endoscope can be realized.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall configuration diagram showing an overall configuration of an endoscope apparatus provided with an endoscope according to an embodiment of the present invention. FIG. 2 is a curve of an endoscope insertion section in FIG. FIG. 3 is a cross-sectional view showing a modification of the bending portion shown in FIG. 2; FIG. 4 is a cross-sectional view showing another modification of the bending portion shown in FIG. 2; FIG. FIG. 6 is a structural explanatory view showing the structure of a coil pipe. FIG. 7 is an external view showing the vicinity of a gripping part of an endoscope. FIG. 8 is a view showing a first bending operation part and a second bending operation part. FIG. 9 is an external view showing the vicinity of a gripping portion of an endoscope in which the operation axes are orthogonal to each other. FIG. 9 is an external view showing the vicinity of a gripping portion of an endoscope provided with two angle knobs in a second bending operation unit. FIG. 11 is a configuration diagram showing a schematic structure of a part. FIG. 11 is a configuration diagram showing a state where a cover of a sub operation knob shown in FIG. 10 is removed. FIG. 12 is a configuration of a stopper shown in FIG. 1... Endoscope apparatus 2... Endoscope 11... Insertion section 12... Gripping section 12a... Operating section 21... Tip section 22... Bending section 23. 1 bending section 25 second bending section 31 bending piece 41 gripping section 42 bending operation section 42a first bending operation knob 43 electrical switch section 43a remote switch (electric switch) 44 second bending operation section 44a … Bending operation knob

Claims (1)

Claims: 1. A first bending portion formed by connecting a plurality of bending pieces to a tip end side so as to be freely rotatable, and a plurality of bending pieces arranged at a hand side of the first bending portion. An endoscope comprising: a second bending portion formed by connecting pieces in a rotatable manner; and an insertion portion formed by coating a curved rubber on the outer periphery of the first bending portion and the second bending portion. An endoscope, wherein the curved rubber is formed such that at least a part of a thickness of a portion covered by the first curved portion is thinner than a thickness of a portion covered by the second curved portion. .