JPH11290267A - Endoscope apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an endoscope apparatus with improved operability of switches when a field of view of the endoscope is to be moved. SOLUTION: Fingers of a hand 8 can be operated under natural condition to improve operability and decrease fatigue by providing push button switches 25a and 25b of an operating switch 23 fitted on a treating tool 1 on an inclined face inclined to a base end part side against a face crossing approximately orthogonally to a plane contg. a fixed handle 21 and a movable handle 22 of the treating tool 1 and crossing approximately orthogonally to an inserting shaft of the treating tool 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope apparatus for performing a treatment while observing a treatment state of an affected part by an endoscope through a treatment instrument inserted into a body cavity of a patient.

[0002]

2. Description of the Related Art In recent years, so-called endoscopic surgery, which involves less invasion to a patient than surgery involving laparotomy and thoracotomy, has been performed. In particular, laparoscopic surgery is becoming widely practiced. In this endoscopic surgical operation, an observation field obtained by the endoscope is displayed on a TV monitor, and a treatment tool such as an extraction of an affected part in a patient's body is operated by operating a treatment tool while viewing the operation field on this screen. Done.

At this time, the operator operates the treatment tool while
By operating an operation switch provided on the treatment tool, the holding position and direction of the endoscope are changed so as to obtain a visual field in which a treatment can be easily performed, thereby changing the visual field direction of the endoscope. Here, the visual field in which the operator can easily perform the treatment differs for each operator. For example, for many operators, the state in which the tip of the treatment tool is displayed in the center of the monitor screen is a visual field that facilitates operation of the treatment tool, and for some operators, the state other than the center of the monitor screen is different. The state in which the distal end of the treatment tool is displayed at another arbitrary position provides a visual field in which the operation of the treatment tool can be easily performed.

In Japanese Patent Application No. 8-284193, an operator operates a switch provided on a treatment tool to change the field of view of an endoscope held by a three-dimensional manipulator in a designated direction. An endoscopic surgical device is disclosed.

[0005] The treatment tool 1 of this endoscopic surgical operation apparatus includes:
As shown in FIG. 13, the treatment section 3 on the distal end side of the sheath 2,
The operation unit 4 includes a base-side operation unit 4 for opening and closing the treatment unit 3. An operation switch 5 for instructing a change in the field of view of the endoscope is detachably provided near the operation unit 4.

[0006] The operation switch 5 changes the observation field of view on the monitor screen of the endoscope up and down (arrows U and D in FIG. 13),
A stick switch 6 for moving in the left / right direction (perpendicular to the plane of FIG. 13) and a switch 7 for moving the endoscope closer to or away from the object along the direction of the insertion axis of the endoscope.
a and 7b are provided.

[0007]

[Problems to be Solved by the Invention] Japanese Patent Application No. 8-28419
The switches 7a and 7b of the operation switch 5 of Japanese Patent Publication No. 3 are provided on a side surface that is substantially parallel to the insertion axis of the treatment instrument 1.
In this position, as shown in FIG. 14, when operating the switches 7a and 7b while gripping the operation unit 4 with the hand 8, the operation direction of the switches 7a and 7b (the direction of the arrow) and the index finger 9
Is very difficult to operate because the natural bending direction of the finger is different, and it is necessary to extremely bend the forefinger 9 to be bent and press the fingertip with the fingertip. There was a problem.

The present invention has been made in view of the above problems, and has as its object to provide an endoscope apparatus with improved operability of a switch when changing the field of view of an endoscope. .

[0009]

SUMMARY OF THE INVENTION According to the present invention, there is provided an endoscope means for generating an observation image and having a field-of-view changing means for changing the field of view of the observation image, and an observation image from the endoscope means. Observation image display means for displaying on a monitor screen, treatment means having an operation section for inserting the treatment member into a body cavity and operating the treatment member, and attached to the treatment means,
In an endoscope apparatus having a visual field change instructing means for instructing a visual field change, and a control means for controlling the visual field changing means based on information from the visual field change instructing means, provided in the visual field change instructing means. An inclined surface which is at least one indicating member inclined at a predetermined angle to a base end upper side with respect to a plane substantially orthogonal to an operation surface on which the operation unit of the treatment means operates and substantially orthogonal to an insertion axis of the treatment means; It was set as the structure provided in.

With this configuration, each finger of the hand 8, particularly the index finger 9, can be operated in a natural state when changing the observation field of view of the endoscope while holding the operation section. In addition, operability can be improved, and fatigue can be reduced.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment An embodiment of the present invention will be described below with reference to the drawings.

(Configuration) FIGS. 1 to 3 relate to a first embodiment of the present invention, and FIG. 1 is a schematic diagram showing a state of performing endoscopic surgery on a body tissue of a patient by an endoscope apparatus of the present invention. FIG. 2 is a side view showing the treatment tool, and FIG. 3 is a view of the treatment tool viewed from the distal end side, and is an explanatory diagram showing a state in which an operation unit is gripped by hand and a switch is operated.

As shown in FIG. 1, the endoscope apparatus according to the first embodiment includes a treatment tool 1 and an endoscope 11. Treatment tool 1
Is located in the body cavity 1 from the body surface 13 via the trocar 12.
4 to perform treatment such as removal of the affected part 15. The endoscope 11 is inserted from the body surface 13 into the body cavity 14 via the trocar 16 to observe the diseased part 15 and the treatment part 3 of the treatment tool 1.

The endoscope 11 is fixedly supported by an endoscope holding device 18 using a three-dimensional manipulator 17 for moving an observation field of view and a position of the endoscope. The three-dimensional manipulator 17 is provided with a holding arm 18a composed of a plurality of joints whose rotation is controlled.

Further, a TV camera 19 is connected to the base end of the endoscope 11. This TV camera 19 has
A TV monitor (not shown) is connected. Then, the images of the diseased part 15, the treatment part 3, and the surrounding tissue detected by the endoscope 11 are captured by the TV camera 19,
It is displayed on the screen of the V monitor.

As shown in FIG. 2, in this embodiment, an example of a grasping forceps will be described, but another treatment tool may be used. The treatment instrument 1 includes a sheath 2, a treatment section 3 disposed at a distal end of the sheath 2, and an operation section 4 disposed at a base end of the sheath 2.

The operation section 4 includes a fixed handle 21 and a movable handle 22 rotatably connected to the fixed handle 21 via a rotation pin. An operating shaft (not shown) connected to the upper end of the movable handle 22 is connected to the treatment section 3 through the inside of the sheath 2, and the movement of the movable handle 22 is transmitted to the treatment section 3, and The gripping member is set to open and close.

The operation unit 4 of the treatment tool 1 includes an operation switch 2
3 is provided detachably or fixedly by known means. The operation switch 23 includes one stick switch 24 and two push button switches 25a, 25
b is provided.

The stick switch 24 is installed on a tip side surface 26 of the operation switch 23 which is substantially perpendicular to the insertion axis of the sheath 2 on the operation switch 23. The push button switches 25a and 25b are provided on the inclined surface 27 inclined backward by about 20 ° to 70 °, preferably about 30 ° to 60 °, and more preferably about 45 ° with respect to the distal end side surface 26. They are installed side by side. This slope 2
The inclination angle of 7 is such that when the fixed handle 21 and the movable handle 22 are gripped by the hand 8, the tip abdomen of the index finger 9 is naturally opposed to the push button switches 25 a and 25 b.

The stick switch 24 has its head and tilts by applying a force in one of the four directions of left, right, up and down in FIG. 3 to move the monitor screen left, right, up and down in accordance with the movement. This is a switch for outputting an instruction signal to be performed.

The push button switch 25a is connected to the endoscope 11
And a push-button switch 25b that outputs an instruction signal for moving the endoscope 11 away from the affected part 15.
This is a switch for outputting an instruction signal for moving in a direction approaching the affected part 15.

The output of each switch of the operation switch 23 of the treatment instrument 1 is output from a cable 28 and a connector 29 (FIG. 2).
Is sent to the drive circuit of the three-dimensional manipulator 17 via the controller to drive the three-dimensional manipulator 17 to move the visual field on the monitor screen.

(Operation) In the endoscope apparatus configured as described above, the treatment tool 1 and the endoscope 11 are installed on the affected part 15 as shown in FIG. The image of the affected part 15 is the endoscope 1
1 and the TV camera 19. Further, this video is displayed on a TV monitor (not shown).

When the operator operates the operation switch 23 of the treatment tool 1, the observation field of view of the endoscope 11 is moved by moving the three-dimensional manipulator 17 according to the type of the operated switch. I do. Here, for example, when the head of the stick switch 24 is tilted upward at the position shown in FIG. 3, the observation field of view on the monitor screen moves upward.

Similarly, when the head of the stick switch 24 is tilted downward, leftward, and rightward at the position shown in FIG. 3, the observation field of view on the monitor screen becomes downward, leftward, and leftward, respectively. Move right.

When the operator operates the push button switch 25a, the endoscope 11 moves the three-dimensional manipulator 17 in a direction away from the diseased part 15 along the axial direction of the endoscope 11, The monitor screen has a wide observation field of view.

Conversely, when the operator operates the push button switch 25b, the endoscope 11 moves the three-dimensional manipulator 17 in a direction approaching the affected part 15 along the axial direction of the endoscope 11. Thus, the monitor screen has an observation field of view in a narrow range.

(Effect) In the endoscope apparatus of this embodiment, by operating each switch on the operation switch 23 of the treatment tool 1, the endoscope 11 can be moved in the axial direction or the endoscope 11 can be moved. Moving the field of view to the position desired by the surgeon,
The field of view of the endoscope 11 can be changed. Therefore, the operator alone can easily move the viewing direction of the endoscope 11 to a desired position at hand, thereby improving operability.

Further, in the present embodiment, the inclined surface 27 on which the push button switches 25a and 25b are installed is attached to the treatment tool 1
2 and 3, the push button switch 25 on the inclined surface 27 is inclined as shown in FIGS. 2 and 3.
a, 25b and the abdomen of the tip of the index finger 9 when the fixed handle 21 and the movable handle 22 of the operation unit 4 are naturally grasped by the hand 8 can be easily operated by the abdomen of the finger. In addition, since the operation of moving the visual field of the endoscope 11 can be easily performed without putting a burden on the finger, the fatigue of the operator can be reduced.

Further, since the insertion axis direction of the sheath 2 of the treatment instrument 1 and the axis direction of the head of the stick switch 24 are substantially parallel, the operator holding the treatment instrument 1 can use a TV.
The direction in which the image on the monitor is moved and the direction in which the stick switch 24 is tilted can be easily correlated, and there is an effect that the operation can be performed more easily.

<Second Embodiment> (Configuration) FIGS. 4 and 5 relate to a second embodiment of the present invention. FIG. 4 is a side view showing a treatment tool, and FIG. FIG. 6 is an explanatory diagram showing a state in which the operation unit is gripped by hand and a switch is operated.

The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. The second embodiment is different from the first embodiment in the configuration of the operation switch.

The operation switch 31 of this embodiment is detachable or fixed to the operation section 4 of the treatment instrument 1 by known means, and is provided with two stick switches 24 and 32.

(Operation) The stick switch 32 of the endoscope apparatus thus configured is
When the head of the stick switch 32 is tilted in the distal direction, the endoscope 11 is moved to the affected area 15.
When the endoscope 11 is moved away from the subject and the head is tilted backward, the endoscope 11 acts so as to move in a direction approaching the affected part 15.

(Effects) The effects of the endoscope apparatus configured as described above are the same as those of the first embodiment.

In this embodiment, when the head of the stick switch 32 is tilted forward, the endoscope 1
5 has been described as being away from the diseased part 15, but the endoscope 11 may be moved away from the diseased part 15 when the head is tilted in the front-rear direction and the head is tilted backward. Even when the endoscope 11 is configured to move with respect to the affected part 15 when moved in the left-right direction, even when the head is tilted to either the front direction or the left direction, When the endoscope 11 is moved in a direction away from the affected part 15 and its head is tilted to either the rearward or rightward direction, the endoscope 11 is moved in a direction approaching the affected part 15. , Or any combination thereof, the effect remains the same.

Further, the stick switch 24 and the stick switch 32 are reversed, and the stick switch 24 adjusts the distance between the endoscope 11 and the affected part 15, and the stick switch 32 moves the monitor screen up, down, left and right. It may be used as a switch.

<Third Embodiment> (Configuration) FIGS. 6 and 7 relate to a third embodiment of the present invention. FIG. 6 is an explanatory diagram showing an operation switch, and FIG. 7 is an explanatory diagram showing a modification of the operation switch. It is. 6 and 7 indicate the distal end direction of the treatment tool 1.

Note that the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. The third embodiment is different from the first embodiment in that the number of operation switches is changed.

The operation switch 35 of this embodiment is detachably provided on the operation section 4 of the treatment instrument 1 by a known means, and includes the stick switch 24, the push button switches 25a and 25.
b, and a push button switch 36 for returning the observation visual field on the monitor screen to the origin.

The push button switch 36 is provided on a second inclined surface 37 inclined further backward than the inclined surface 27.

(Operation) The push button switch 36 of the operation switch 35 configured as described above returns the observation position and range to the origin regardless of the position and range of the observation visual field on the monitor screen. do.

(Effects) In addition to the effects of the first embodiment, the effects of the endoscope apparatus configured as described above can be easily and quickly obtained regardless of the observation visual field position and range of the monitor screen. It can be returned to the initial state.

Further, since switches are provided on two different slopes, each switch can be easily identified, and a desired switch can be operated without keeping an eye on the monitor screen.

The number of switches is two on the inclined surface 27.
Although an example in which one switch is provided on the inclined surface 37 has been described, the present invention is not limited to this example. For example, each of the inclined surface 27 and the inclined surface 37 may have only one switch having an arbitrary function. Alternatively, switches having a plurality of different functions may be provided on both inclined surfaces.

Further, the description has been made with reference to the example of two inclined surfaces.
If the tip abdomen of the index finger 9 of the hand 8 is a surface that can be easily faced, one or more switches may be provided on three or more inclined surfaces.

Further, even if the portion where the switch is provided is not a sloped surface, but a curved surface 38 as shown in FIG. Absent.

The operation switch 23 and the operation switch 3
1 and the operation switch 35 have been described as being installed on the right side when viewed from the distal end side of the treatment tool 1 as shown in FIGS. 3 and 5, but may be installed on the left side.

Incidentally, in the first to third embodiments, the stick switches 24, 32 and the push button switches 25, 36 on the operation switches 23, 31, 35, respectively.
Has a watertight structure that can withstand sterilization means such as washing and high-pressure steam sterilization as shown in FIGS.

FIGS. 8 and 9 show the main body 4 of the operation switch 23.
Covers 41, 42, and 4 of a modified example fixed in a gas-tight structure to
5 and 47 are shown. FIG. 8 is an external view showing a state in which the cover 41 is attached to the operation switch 23 in the first embodiment, FIG. 8A is a front view of the operation switch 23, FIG. 8B is a side view of the operation switch 23, FIG. 9 shows a cross-sectional shape of the AA cross section of FIG. 8A, and FIG.
FIG. 9B is a cross-sectional view showing a modification, and FIG.
FIG. 9C is a cross-sectional view showing a modification, and FIG.
FIG. 9D is a cross-sectional view showing a modification, and FIG.
It is sectional drawing which shows a modification.

The cover of each modification shown in FIG. 9 is made of an elastic member such as silicone rubber or rubber which can be washed and sterilized at high temperature and high pressure, and preferably has a rubber hardness of 40 ° to 60 °.

The cover 41 of the first modified example of FIG.
The whole is formed with a substantially uniform film thickness, and both portions of the front end side surface 26 and the entire side surface of the main body 40 shown in FIG. 8 are bonded and fixed by a known means such as an adhesive.

With the above configuration, the bonding area can be increased as compared with a conventional case where the switch is bonded and fixed only on one surface on which the switch is arranged. Can be fixed. Therefore, high temperature
Even when washing or sterilizing at high pressure, the durability of the operation switch is improved without the washing liquid or the like entering through the gap.

The cover 42 of the second modification shown in FIG.
The main body 40 has a concave portion 44 provided on the entire upper side surface and engaged with the band-shaped convex portion 43. Tip side 26 and body 4
The both sides and the entire periphery of the side surface of the O are adhesively fixed by a known means such as an adhesive, and the convex portion and the concave portion are engaged. In addition, the convex portion 43 may not be provided on the entire circumference of the main body 40 but may be provided partially, for example, only at one position.

With the above structure, the cover 42 is hard to come off, and the pressure inside the cover 42 becomes larger than the outside pressure at the time of sterilization. , Can be securely fixed in a watertight manner.

The cover 45 of the third modification shown in FIG.
In addition to the concave portion 44 of the cover 42 of the second modified example, a film thickness portion (dimension b) 4 of the concave portion 44 on the opposite side of the main body 40 with respect to the concave portion 44.
6 is thicker, and the degree of adhesion with the main body 40 is further increased. Thickness (a dimension) of the part covering the tip side of the switch
In this modification, the ratio is approximately a: b = 1: 1.4. However, since the cover 45 and the main body 40 can be securely fixed in a water-tight manner, and the operation of the switch can be easily performed. If so, it is not limited to this numerical value.

With the above-described configuration, the convex portion 43 of the main body 40 is sandwiched from both sides of the concave portion 44 and the film thickness portion 46 of the cover 42 of the second modified example. Even if the internal pressure becomes larger than the external pressure and pressure is applied in the direction in which the cover 45 comes off, the cover 45 does not come off and can be securely fixed in a watertight manner.

The cover 47 of the fourth modification shown in FIG.
The cover 45 of the third modified example is provided with two circular grooves 48 on the inner surface near the base of the tip switch portion. The number of the circular grooves 48 may be one, three or more, and may be not circular but arc-shaped.

With the above configuration, the switch 2
4 is moved left and right or the switches 25a and 25b are pressed down, the circular groove 48 is mainly deformed, so that the amount of deformation force by the cover 47 can be reduced as compared with the case where the circular groove 48 is not provided. Switch 24 and switch 25
The amount of operating force of the a and 25b can be reduced, the operability is improved, and the watertight fixation to the main body 40 can be maintained like the cover 45 of the third modification.

Although the stick switch 24 has been described as an example, the push button switches 25 and 36 have the same configuration.

In the first embodiment, it is assumed that the treatment tool 1 is gripped with the left hand and the push button switches 25a and 25b are operated with the fingertip of the left hand. There was a problem that it was not possible.

This problem can be solved by making the switch arm 51 detachable from the main body 40 or the cover 41 later attachable.

FIGS. 10 and 11 show the switch arm 51.
Is shown. FIG. 10 shows a treatment tool 1 according to the first embodiment.
The switch arm 51 is attached to the main body 40 of the operation switch 23 of FIG.
10 (a) is a front view of the treatment tool 1, FIG. 10 (b) is a side view of the treatment tool 1, and FIG. 11 is a developed view of the switch arm 51.

As shown in FIG. 11, the switch arm 5
Reference numeral 1 denotes an elastic member that can be washed, sterilized, or the like, for example, a thin plate made of stainless steel for a spring.
After forming notches by pressing or the like so as to form the bent portions 2b and the bent portions 55, the bent portions 55 and 56 are bent in the direction of the back of the drawing at the dotted line portions in the drawing. The distance between the bent portions 55 and 56 is set to be substantially the same as or smaller than the width of the operation switch 23 or the cover. The switch arm 51 can be formed by molding with a resin material such as polysulfone, and if high pressure steam sterilization is not used, polypropylene is also suitable.

As shown in FIGS. 10 (a) and 10 (b), action points 54a and 54b are applied to the operation switch 23 or the cover from the tip of the bent portions 55 and 56 to the switch 25a,
25b to the position where it slightly touches the tip. In this state, the switch arm 51 is bent.
6 is fixed to the operation switch 23 by the gripping force of the elasticity. When one or both of the open end portions of the bent portions 55 and 56 are further bent inward by about 90 ° so as to go around the back side of the main body 40, the switch arm 51 and the operation switch 23 are further firmly connected. Fixed.

When the treatment tool 1 is gripped with the right hand and the power point 52a or 52b is depressed with the finger of the right hand, the fulcrums 53a, 53
b, it is elastically deformed, and the back surfaces of the application points 54a, 54b push down the switches 25a, 25b, so that the switches operate.

With the above-described configuration, even the treatment tool 1 with a switch for left hand operation, which is already possessed, can be operated with the right hand only by adding the switch arm 51. , Or according to the condition of the surgical site.

Further, when operating the stick switch 24 and the switches 25a and 25b of the operation switch 23 of the first embodiment, it is necessary to move a finger greatly. Was.

This problem can be solved by making the switch arm 61 detachable from the main body 40 or the cover later attachable.

FIG. 12 shows the structure of the switch arm 61. FIG. 12 shows a state in which a switch arm 61 is attached to the main body 40 of the operation switch 23 of the treatment tool 1 according to the first embodiment, and FIG.
(b) is a side view of the treatment tool 1.

The switch arm 61 is made of an elastic member capable of washing and sterilizing, for example, a thin plate of stainless steel for spring, or a resin molded product of polysulfone, polypropylene or the like. It is detachably fixed to the main body 40 or the cover with the holding force of 65, 66.

The width of the bent portions 65 and 66 is small near the bent portions. The narrow width portion 63 serves as a fulcrum, and the arm portion moves like a seesaw by the elastic deformation of the switch arm 61. The narrow portion 63 is provided with the switches 25a and 2a.
5b is attached at a substantially central position.

At the time of use, a finger is put on the finger hook portion 62 serving as an emphasis point, and when the finger is moved in the direction of the arrow A (FIG. 12B), the narrow portion 63 becomes a fulcrum. The switch 25a on the side is pressed to operate.

On the other hand, when a finger is put on the finger hook portion 62 serving as an emphasis point and is moved in the direction opposite to the arrow A, the narrow portion 63 becomes a fulcrum, and the switch 25b located ahead of the narrow portion 63 is pressed. Operate.

As described above, since the stick switch 24 and the finger hook 62 are arranged close to each other, even if the treatment tool with switch 1 already possessed, only the switch arm 61 is added, and each switch The movement of the fingertip when moving between the spaces can be reduced, and even if the switch operation is repeatedly performed, fatigue is reduced and operability is improved. In addition, since the finger hook 62 is disposed near the center of the longitudinal axis of the sheath 2, operation can be performed with the right hand, and operability is further improved.

The configurations described in each embodiment, each modification, and the like can be arbitrarily combined and used without departing from the gist of the present application.

[Appendix] As described in detail above, according to the embodiment of the present invention, the following configuration can be obtained.
That is,

[Supplementary Note 1] Endoscope means having a field-of-view changing means for generating an observation image and changing the field of view of the observation image, and observation for displaying the observation image from the endoscope means on a monitor screen Image display means, treatment means having an operation section for inserting the treatment member into the body cavity and operating the treatment member, view change instruction means attached to the treatment means, and instructing a change in the view, and the view change instruction Control means for controlling the visual field changing means based on information from the means, wherein at least one instruction member provided in the visual field changing instruction means is provided by the operating unit of the treatment means. An endoscope apparatus characterized in that the endoscope apparatus is provided on an inclined surface that is substantially perpendicular to an operating surface on which it operates and that is inclined upward on a base end with respect to a surface that is substantially perpendicular to an insertion axis of the treatment means.

[Supplementary Note 2] In the endoscope apparatus according to Supplementary Note 1, the inclined surface is at a base end side of 30 ° to 60 ° with respect to a plane substantially orthogonal to an insertion axis of the treatment means. It is inclined.

[Supplementary Note 3] The endoscope apparatus according to Supplementary Note 2, wherein the inclined surface is inclined toward the base end side by approximately 45 ° with respect to a plane substantially perpendicular to the insertion axis of the treatment means. doing.

[Supplementary Note 4] The endoscope apparatus according to Supplementary Note 1, wherein the inclined surface has a movement direction of a finger which can be operated in a state close to a natural state when the treatment means is grasped by hand. , Which are substantially orthogonal to each other.

[Supplementary Note 5] In the endoscope apparatus according to Supplementary Note 1, the slope of the finger that is operated in a state that is natural and natural when the treatment means is gripped by hand may be: It has an angle facing the action part of the pointing member.

[Supplementary Note 6] In the endoscope apparatus according to any one of Supplementary Notes 1 to 5, the inclined surfaces include a plurality of inclined surfaces having different inclination angles.

[Supplementary Note 7] In the endoscope apparatus according to Supplementary Note 1, 4 or 5, the inclined surface is a curved surface.

[Supplementary Note 8] In the endoscope apparatus according to Supplementary Note 1, at least one pointing member may be provided on each of the inclined surface and a surface substantially orthogonal to an insertion axis of the treatment means. Is provided.

[Supplementary Note 9] While generating an observation image,
Endoscope means having a field-of-view changing means for changing the field of view of the observation image, a treatment means having an operation section for inserting a treatment member into a body cavity and operating the treatment member, and attached to the treatment means, In an endoscope apparatus having switch means for instructing a visual field change, and control means for controlling the visual field change means based on information from the switch means,
An endoscope apparatus integrally comprising a cover made of an elastic material, which covers both a cover part for covering a switch operating part of at least one of the switch means and a switch means (main body) in a watertight manner.

[Supplementary Note 10] The endoscope apparatus according to supplementary note 9, wherein the cover is provided with the switch means (main body).
And a watertight engagement portion between them.

[Supplementary Note 11] In the endoscope apparatus according to Supplementary Note 10, the engaging portion includes a convex portion and a concave portion provided inside the cover and outside the switch means (main body). You.

[Supplementary Note 12] In the endoscope apparatus according to supplementary note 9, the elastic material forming the cover is a rubber material such as silicone rubber or rubber that can be subjected to high-pressure steam sterilization.

[Supplementary Note 13] In the endoscope apparatus according to Supplementary Note 12, the rubber hardness of the high-pressure steam sterilizable rubber material such as the silicone rubber or rubber is approximately 40 ° to 6 °.
0 °.

[Supplementary Note 14] In the endoscope apparatus according to Supplementary Note 9, the thickness of the lid that covers the operation part of the switch is a thin film that is approximately 70% or less of the thickness of the thick part.

[Supplementary Note 15] In a treatment tool having a treatment unit having an operation unit for inserting a treatment member into a body cavity and operating the treatment member, and an operation switch attached to the treatment unit and instructing various operations. And an arm member operable at a position distant from the operation switch, and the arm member is detachable from the treatment means.

[Supplementary Note 16] The treatment tool according to Supplementary Note 15, wherein the arm member includes an action point for operating the switch, a force point operated by a finger, and a fulcrum serving as a center of movement of the arm member. Having.

As described above, according to the endoscope apparatus of the present invention, the surface on which the operation switch is installed is located at a position closer to the distal end of the treatment instrument and substantially perpendicular to the direction of the insertion axis of the treatment instrument. Since the surface is inclined upward and backward, the operation switch on this inclined surface and the abdomen of the tip of the finger when the fixed handle and the movable handle of the operation unit are naturally grasped by hand naturally face each other. Can be operated on the abdomen. In addition, since the operation of moving the field of view of the endoscope can be easily performed without putting a burden on the finger, the fatigue of the operator can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram illustrating a state in which an endoscopic surgical operation according to a first embodiment is performed.

FIG. 2 is a side view showing the treatment tool according to the first embodiment.

FIG. 3 is a diagram of the treatment tool according to the first embodiment as viewed from the distal end side, and is an explanatory diagram illustrating a state in which an operation unit is gripped with a hand and a switch is operated.

FIG. 4 is a side view showing a treatment tool according to a second embodiment.

FIG. 5 is a diagram of the treatment tool according to the second embodiment as viewed from the distal end side, and is an explanatory diagram illustrating a state in which an operation unit is gripped by hand and a switch is operated.

FIG. 6 is an explanatory diagram illustrating an operation switch according to a third embodiment.

FIG. 7 is an explanatory diagram showing a modification of the operation switch of the third embodiment.

8A and 8B are external views showing a state in which a cover 41 is attached to the operation switch 23 according to the first embodiment. FIG. 8A is a front view of the operation switch 23, and FIG.
It is a side view of No. 3.

9 shows a cross-sectional shape of the AA cross section in FIG. 8A, FIG. 9A is a cross-sectional view showing a first modification of the operation switch, and FIG. 9B is a second modification of the operation switch. 9C is a cross-sectional view illustrating a third modification of the operation switch, and FIG. 9D is a cross-sectional view illustrating a fourth modification of the operation switch.

10 shows a state in which a switch arm 51 is attached to the main body 40 of the operation switch 23 of the treatment tool 1 according to the first embodiment, FIG. 10 (a) is a front view of the treatment tool 1, and FIG.
(b) is a side view of the treatment tool 1.

11 is an exploded view of the switch arm 51. FIG.

12 shows a state in which a switch arm 61 is attached to the main body 40 of the operation switch 23 of the treatment tool 1 according to the first embodiment. FIG. 12A is a front view of the treatment tool 1, and FIG.
(b) is a side view of the treatment tool 1.

FIG. 13 is a side view showing a conventional treatment tool.

FIG. 14 is a view of a conventional treatment tool viewed from the distal end side.
FIG. 4 is an explanatory diagram illustrating a state in which a switch is operated by gripping an operation unit with a hand.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 treatment tool 2 sheath 3 treatment section 4 operation section 8 hand 9 index finger 11 endoscope 17 3D manipulator 18 endoscope holding device 19 TV camera 21 fixed handle 22 movable handle 23, 31, 35 operation switch 24, 32 stick switch 25, 36 Push button switch 26 Tip side surface 27, 37 Inclined surface

Claims (1)

[Claims] An endoscope means for generating an observation image and changing a field of view of the observation image, and an observation image display for displaying an observation image from the endoscope means on a monitor screen. Means, inserting the treatment member into the body cavity,
A treatment unit having an operation unit for operating the treatment member, a view change instruction unit attached to the treatment unit, and instructing a view change, and controlling the view change unit based on information from the view change instruction unit. Control means for causing the at least one indication member provided on the visual field change instructing means to be substantially orthogonal to an operation surface on which the operation unit of the treatment means operates, and An endoscope apparatus provided on an inclined surface inclined upward on a base end portion with respect to a surface substantially orthogonal to an insertion axis.