JPH08215140A - Endoscope device - Google Patents

Abstract

PURPOSE: To securely carry out the operations of various functions controlled by electric switches provided at the operating part of an endoscope without an error. CONSTITUTION: At the operating part of an endoscope, a ventilation and water feeding switch 31 which consists of a double-pressing type switch, an suction switch 32 which consists of a one step type switch and an image switch 30 are provided. The ventilation and water feeding switch 31 is composed by providing an electric switch 41 furnishing a double-pressing type electric switch 45, and a button 42 to press the electric switch 41, and when the button 42 is pressed and operated, a rod form member 47 is to be slided to a tubular member 46 of the button 42, and this electric switch is operated only to the operating force in the direction almost same to the pressing direction of the electric switch 45.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope apparatus which inserts an elongated insertion portion into a body cavity or the like to perform observation diagnosis, treatment and treatment.

[0002]

2. Description of the Related Art Conventionally, in an endoscope apparatus, an operation switch is provided on an operation portion which also serves as a grip portion on the near side so that various operation instructions regarding the endoscope can be given. In an endoscope device having a conduit for performing air supply / water supply and suction, an electric switch is provided in the operation unit, and the solenoid valve is driven by the operation of the electric switch to control the air supply / water supply / suction operation. A mechanism has been proposed. For example, JP-A-4-36
Japanese Patent No. 1732 discloses an endoscope operation section provided with an electric switch that is pressed in two steps, and the air supply and water supply operations are controlled by the two-step switch.

[0003]

In the conventional configuration,
In order to carry out the insertion operation while gripping the endoscope operation part and the operator performs the air supply or water supply operation in this state, a two-stage pressing type electric switch provided in the operation part for controlling the air supply / water supply operation (Hereinafter, it will be referred to as an air / water supply switch). At this time, the direction in which the air / water feeding switch is pressed differs depending on the size of the operator's hand or the way the endoscope operating portion is gripped at that time.

In the case of the two-stage pressing type air / water feeding switch, if the pushing operation is performed from various directions, the operation of air / water feeding may be unexpected. For example, when the operation of the air / water switch is set so that the first press of the first step sends the air, and then the second press of the switch pushes the water, the operation of the water switch is pushed to the first step. There is a risk that the user may have operated the air supply, but pressing it diagonally may result in the pressing operation up to the second step. On the contrary, even if an attempt is made to press the second stage to operate the water supply, there is a possibility that the water supply operation cannot be performed because the pressure is applied only to the first stage due to the oblique pressing.

The present invention has been made in view of these circumstances, and a desired operation can be performed in an apparatus in which an electric switch is provided in an endoscope operation section and various functions can be controlled by operating instructions of the switch. It is an object of the present invention to provide an endoscope apparatus that can be surely performed without error.

[0006]

An endoscope apparatus according to the present invention is an apparatus having an elongated insertion portion and an operation portion connected to a proximal end of the insertion portion, the operation portion being provided in the operation portion,
An electric switch for controlling different functions by different pushing amounts, and an operating member that is provided in a watertight manner with the operating portion and operates the electric switch by receiving an operating force from the outside, and the operating member is The electric switch is configured to be operated only with respect to an operating force in a direction substantially the same as the pushing direction of the electric switch.

[0007]

The actuating member receives an operating force from the outside and actuates the electric switch only with respect to the operating force in a direction substantially the same as the pushing direction of the electric switch, and the predetermined function is controlled by the switch.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 relate to an embodiment of the present invention.
2 is a perspective view showing the overall configuration of the endoscope device, FIG. 2 is a perspective view showing the external configuration of the operating portion of the endoscope, FIG. 3 is a sectional view showing the detailed configuration of the operating switch, and FIG. 4 is a universal cord end portion. FIG. 3 is a perspective view showing the configuration of the connector part of FIG.

As shown in FIG. 1, an endoscope cover type endoscope apparatus 1 is an apparatus having an endoscope cover type endoscope (hereinafter referred to as a cover type endoscope) 2.

The cover type endoscope 2 includes an endoscope cover (hereinafter abbreviated as cover) 3 and an endoscope cover endoscope (hereinafter referred to as cover endoscope) mounted on the cover 3. Abbreviated as 4). When performing an endoscopic inspection, the insertion portion of the cover endoscope 4 is covered by the clean cover 3, and the cover 3 is discarded after the inspection, while the cover endoscope 4 is newly cleaned. Na cover 3
It is characterized by being covered by and used repeatedly. This makes it unnecessary to clean and disinfect the endoscope after the inspection.

The endoscope apparatus 1 includes the cover-type endoscope 2, a cart 5 in which various peripheral devices connected to the cover-type endoscope 2 are installed, and the cover-type endoscope 2
And a cover holder 6 for holding.

The cart 5 includes, for example, a light source device 7, a video processor 8, a fluid control device 9, and an endoscope cover extender (hereinafter referred to as an extender) used when the cover endoscope 4 is attached to the cover 3. 10) etc. are stored.
A video processor 8 is provided on the top surface of the cart 5.
Monitor 1 that receives the video signal from the computer and displays an endoscopic image
1 is placed.

The cover endoscope 4 includes an operation portion 12 which also serves as a large-diameter grip portion at the proximal end of the elongated endoscope insertion portion 14 on the proximal side.
Are connected in series, the universal cord 13 extends from the side of the operation unit 12, and the connector 19 is provided at the end of the universal cord 13.

The light source device 7 is detachably connected to the cover endoscope 4 through the connector 19 and supplies illumination light to the endoscope. Further, the video processor 8 is detachably connected to the cover endoscope 4 via a signal cable 21 extending from a side portion of the connector 19, and drives an image pickup means built in the cover endoscope 4. , And the signal output from the image pickup means is converted into a standard video signal and output to the monitor 11.

The expander 10 is connected to an expansion tube 34, and is for expanding air by sending air into the cover 3 through the expansion tube 34. By this expansion, the cover 3 is covered by a cover. The mirror 4 can be easily attached or removed. When the cover 3 is attached to or detached from the cover endoscope 4, a cover holder 6 is used. For example, the cover holder 6 holds the base end side of the cover 3 to insert or remove the cover endoscope 4. It is supposed to do.

The cover 3 has a flexible insertion portion cover portion 22.
And an operation section cover section 23 and a universal cord cover section 24 which are made of a thin and soft polymer material such as vinyl chloride, and the endoscope insertion section 14 of the cover endoscope 4. , The operation part 12 and the universal cord 13 are respectively covered. A mouth portion 29 is provided on the proximal side of the insertion portion cover portion 22, and a connection portion between the insertion portion 14 of the cover endoscope 4 and the operation portion 12 is fitted to keep a watertight state inside the cover. It is like this.

The fluid control device 9 is provided with an air supply control valve 35, a water supply control valve 36, and a suction control valve 37.
The suction is controlled by these solenoid valves. The air supply control valve 35, the water supply control valve 36, and the suction control valve 37 are connected to an air supply pipe line 26, a water supply pipe line 27, and a suction pipe line 28 extending from the insertion section cover portion 22, respectively.

The suction control valve 37 has a suction tube 3
8 is connected, and an aspirator (not shown) is connected to the end portion of the endoscope 8 so that unnecessary body fluid or the like is sucked from the distal end portion of the endoscope. A water supply tube 39 is connected to the water supply control valve 36, and a water supply tank 33 is connected to the tip of the water supply tube 39. Further, two air supply tubes 40 extend from the fluid control device 9 and are connected to the air supply control valve 35 and the water supply tank 33.

FIG. 2 shows an external configuration of the cover endoscope 4 in the vicinity of the operation portion 12.

In the operation section 12 of the cover endoscope 4, as an operation switch for instructing various functions, an air / water switch 31 for instructing and controlling air supply and water supply operation, and a suction for instructing and controlling suction operation. A switch 32 and an image switch 30 for controlling an observation image of the endoscope are provided.

As shown in FIG. 4, the connector 19 at the end of the universal cord 13 extending from the operating portion 12 is
A signal cable 21 for transmitting image signals and the like is connected to and extended from the video processor 8, and in the vicinity thereof, signals for air supply / water supply / suction control are transmitted to / from the fluid control device 9. The AWS cable 15 is connected.
An AWS connector 16 is provided at the end of the AWS cable 15, and is connected to the fluid control device 9 via the AWS connector 16 when the endoscope is used. And the operation unit 12
The operation signals of the air / water supply switch 31 and the suction switch 32 are sent to the fluid control device 9 via the AWS cable 15.

AWS cable 15 and AWS connector 1
6 is watertightly connected to the connector 19,
A waterproof cap 17 can be attached to the AWS connector 16. By attaching the waterproof cap 17 to the AWS connector 16 in a state where the AWS cable 15 is removed from the fluid control device 9, the cover endoscope 4
It is designed to be watertight and to be washed.

FIG. 3 shows a sectional structure of the air / water supply switch 31, the suction switch 32, and the image switch 30 provided on the operation unit 12.

The air supply / water supply switch 31 is a two-stage pressing type switch, and has an electric switch section 41 and a button section 42 as an operating member for pressing the electric switch section 41. . The suction switch 32 and the image switch 30 are both single-stage switches, and are each configured to have an electric switch section 43 and a button section 44 that presses the electric switch section 43.

The electric switch sections 41 and 43 are provided from the endoscope operation section 12 through the universal cord 13, the air / water supply switch 31 and the suction switch 32 to the fluid control device 9, and the image switch 30 to the video. Each is connected to the processor 8. When the air supply / water supply switch 31 and the suction switch 32 are operated, the electromagnetic valve provided in the fluid control device 9 is activated to control the air supply / water supply function and the suction function.

The electric switch portion 41 of the air / water supply switch 31 is provided with a two-stage pressing type electric switch 45. Here, the air supply operation is performed by pressing the first stage of the switch.
Further, the water feeding operation is performed by pressing the second stage. Electric switch 45 for pressing operation by the operator
The button portion 42 that conveys to the electric switch portion 41 is arranged so as to cover the upper periphery of the electric switch portion 41 coaxially with the electric switch 45, and the electric member 45 is slidably arranged to press the electric switch 45. And a switch cover 48 having an elastically deformable portion whose central portion is connected to the rod member 47 and whose peripheral portion is connected to the tubular member 46. The clearance between the cylindrical member 46 and the rod member 47 is set to be narrow within the slidable range so as not to open a gap.

The stroke of the electric switch 45 of the two-step pressing type is set so that the first step is relatively small and the second step is relatively large. The axial length of each of the cylindrical member 46 and the rod member 47 is in the range of 5 to 15 mm,
Also, the gap between the two is about 0.2-0.5 mm,
The sliding stroke is preferably in the range of 0.3 to 0.8 mm.

The suction switch 32 and the electric switch section 43 of the image switch 30 are provided with a one-stage electric switch 49. Further, the button portion 44 is the electric switch 4
9 is configured to have a bar member 50 arranged on the central axis of the electric switch 49 for pressing the electric switch 49, and a switch cover 51 having an elastically deformable portion. The switch cover 51 and the bar member 50 are slightly spaced apart from each other. Are arranged. Further, inside the switch cover 51, there is connected a cylindrical body 52 which is arranged at a distance from the upper portion of the rod member 50 and surrounds and holds the side peripheral portion of the rod member 50.

When using the cover type endoscope 2 as described above, the operator holds the operating section 12 while holding the endoscope cover 3 on the cover endoscope 4 and holds the insertion section 14 in place. Insertion into the body cavity is performed, but the surgeon supplies air if necessary.
Water supply or suction operation will be performed. The air supply operation and the water supply operation are performed by selectively operating the first and second pressures of the air / water supply switch 31 including a two-stage pressing type switch.

At this time, the surgeon may use the air / water switch 31 depending on how the operating portion is gripped at that time.
It is possible that the button portion 42 is pressed from a direction oblique to the operating direction of the electric switch 45. in this case,
The sliding movement of the rod member 47 and the tubular member 46 in the button portion 42 of the air / water feeding switch 31 cannot be obtained in a predetermined amount because there is no gap between the two when the pushing operation is performed obliquely, and as a result, the first-stage electric switch The operation of 45, that is, the air supply operation cannot be performed. That is, in the structure of the air / water feeding switch of this embodiment, the switch is not sufficiently operated by pressing the electric switch portion 41 from an oblique direction, and it is necessary to perform the pressing operation from the vertical direction.

Therefore, the operator recognizes this fact,
Since the water feed switch 31 is pressed from the direction perpendicular to the electric switch portion 41, the selection operation between the first-step pressing and the second-step pressing can be reliably performed.

The operation stroke of the electric switch 45 of the two-step pressing type is set so that the first step is relatively small and the second step is relatively large, so the air supply is a light operation and the water supply is more efficient. This means that the operation is performed with a large amount of operation, so that the operation feeling is similar to that of the configuration in which the air supply / water supply control is performed by the piston type valve provided in the operation unit in the endoscope type that is not conventionally used. You can

On the other hand, when performing a suction operation or an image control operation such as stopping the endoscopic image, the suction switch 32 or the image switch 30 consisting of a one-stage switch is pressed. In this case as well, the operator may press from an oblique direction depending on how the operator grips the operation unit. In the suction switch 32 and the image switch 30, a switch cover 51 and a tubular body 52 connected to the switch cover 51 are spaced apart from a rod member 50 arranged facing the upper portion of the electric switch 49. Since the cylindrical body 52 is arranged so as to surround the side portion of the rod member 50, the rod member 50 can obtain a sufficient amount of movement even when pressed from an oblique direction and acts on the electric switch 49. , Each function will operate.

According to the above-described structure, the air / water feeding operation is performed only by pressing from a direction substantially the same as the operating direction of the two-step pressing type switch. Therefore, selective operation of air / water feeding can be performed. Since the suction operation and the image control operation can be performed reliably by pressing the one-step switch from an oblique direction, the suction and image control operations can be easily performed. Therefore, it becomes possible for the operator to reliably perform desired operations such as air supply, water supply, and suction operation controlled by operating the electric switch provided in the endoscope operation section without error.

Further, if each operation stroke of the air / water feeding switch is set as described above, it can be used with an operation feeling equivalent to that of an endoscope for controlling air / water feeding with the conventional piston cylinder type structure. it can. Further, by setting the flexibility of the operation section cover so that the operation section cover is deformed with a smaller amount of force than the amount of displacement required to operate these switches, it is possible to achieve the same flexibility as that of a conventional non-cover type endoscope. Operability can also be obtained.

The operating strokes of the two-step pressing type switch are not limited to the settings described above, but may be set such that the operating stroke of the first step is relatively large and the operating stroke of the second step is relatively small. In this way, it is possible to prevent the air supply from malfunctioning due to the operator's finger etc. touching the switch unexpectedly, and the air supply operation can be performed safely by the operator's reliable operation.
Then, the effect that the water supply operation can be performed is obtained.

Further, the two-step pressing type switch described in this embodiment is not limited to the one for controlling the air supply / water supply, but other control of the angle and speed of the curve, the stillness and photographing of the endoscopic image, etc. It can be used as an operation switch for various functions of an endoscope, such as image control.

Further, although the cover type endoscope has been described in the present embodiment, the present invention is not limited to this and can be applied to all endoscopes in which similar air / water feeding control and the like are performed by electric switches.

Next, the structure of the forceps raising mechanism provided at the tip of the insertion portion of the endoscope cover will be described.

As a forceps raising mechanism provided in a conventional cover-type endoscope, as shown in Japanese Patent Laid-Open No. 6-319680, a distal end portion of a channel tube (hereinafter referred to as a raising tube) communicating with a channel conduit is disclosed. Has been proposed to pull up a distal end portion of a treatment tool such as forceps inserted into the channel tube by pulling it with a raising wire arranged along the insertion portion. The thing of the said publication makes it easy to bend in the direction in which the tip of the rising tube rises,
A cutout is provided on the side of the tube, and a raising wire is joined to the tip of this raising tube, and treatment is performed by bending the tube due to the forward / backward movement of the raising wire from the operating section on the proximal side. The operation of raising the equipment is possible. As the configuration of the connecting portion between the tube tip portion and the raising wire, there is disclosed one in which an annular member made of metal is adhered to the tube tip, and the wire end portion is welded or adhered to the side portion of the annular member. There is.

In the structure of the conventional forceps raising mechanism described above,
The tip of the wire that performs the raising operation is welded or adhered to the metallic annular member fixed to the tip of the raising tube, but when performing the raising operation with this structure There is a risk of breaking the wire connection. When such a problem occurs, the operation of raising the treatment instrument becomes impossible, and for example, when the endoscope is inserted into the duodenum to treat the bile duct or pancreatic duct, the treatment instrument can be approached to the duodenal papilla. It's gone.

Further, in the conventional structure, if the raising tube is largely raised, the rear end of the side cutout provided in the raising tube may buckle. When such a buckling of the tube occurs, it becomes difficult to insert the treatment tool, and the desired treatment cannot be performed.

Therefore, in order to solve the above-mentioned problem, in the forceps raising mechanism provided in the cover type endoscope, even if the raising operation is repeated, the wire connecting portion does not break and a reliable raising function is provided. An example of a structure that can be kept and a structure that prevents buckling of the rising tube and allows insertion and rising of the treatment tool reliably is shown below.

FIGS. 5 to 8 show a first configuration example of the distal end portion of the insertion portion of the endoscope cover 3 having a forceps raising mechanism and the cover endoscope 4 used in combination therewith. . FIG. 5 is a side view of the distal end portion of the insertion portion cover portion 22 of the endoscope cover 3 as seen from the direction of the optical field surface, and FIG. 6 is a longitudinal sectional view of the insertion portion of the endoscope cover 3 and the cover endoscope 4. FIG. 7 is a longitudinal sectional view of the insertion portion showing the configuration of a forceps raising mechanism provided in the endoscope cover 3, and FIG. 8 is an operation explanatory view showing a state where the forceps raising mechanism is raised.

As shown in FIGS. 6 and 7, the insertion portion 14 of the cover endoscope 4 having the side-view optical system is inserted into the insertion portion cover portion 22 of the endoscope cover 3. And an air supply tube 61, a water supply tube 62, and a channel tube 63 that also serves as a suction tube are provided.
The raising wire 64 is inserted. A raising tube 65 is continuously provided on the tip side of the channel tube 63, and a raising wire 64 is connected to the tip portion of the raising tube 65.
The raising wire 64 is inserted through the wire tube 79 and extends to the rear end of the insertion portion cover portion 22.

The tip hard member 66 provided at the tip of the insertion portion cover 22 is composed of four parts, and the hard member A67, the hard member B68, and the hard member C6 are arranged from the tip side.
9 is connected and joined, and the lens cover 70 is joined and fixed to the side of the optical field of the hard member B68 by a structure in which the lens cover 70 and the hard member A67 are sandwiched. To the hard member C69 of the distal end hard member 66, various tubes such as a cover sheath 71 that serves as a cover outer skin and the air supply tube 61 are connected. The outer diameter of the hard member C69 is smaller than that of the hard member B68 by the thickness of the cover sheath 71, and the cover sheath 71 is adhesively fixed to the outer peripheral portion of the hard member C69. A fitting recess 72 is provided inside the hard member A67 so that the distal end portion of the cover endoscope 4 is fitted and fixed.

FIG. 9 is a sectional view taken along the line AA of FIG. 7 which is a cross section of the distal end hard member 66 of the endoscope cover, and FIG. 10 is a distal end portion of the endoscope cover and the insertion portion of the cover endoscope. 6 is a cross-sectional view taken along the line BB of FIG. 6 which is a cross-sectional view in the vicinity, and FIG. 11 shows a cross-sectional view of the flexible tube portion of the endoscope cover and the insertion portion intermediate portion of the cover endoscope.

The air supply tube 61 and the water supply tube 62, which are connected to the hard member C69 of the distal end hard member 66, have air passages provided in the hard member C69 at the joint surface between the hard member C69 and the hard member B68. -Communication with the water supply groove 73. The air / water supply groove 73 has a groove-shaped path formed by bending in a hook shape as shown in FIG. 9, and an opening is formed toward the outer surface of the lens cover 70 as shown in FIG. And communicates with a nozzle 74 provided in the.

In the cover sheath 71 of the insertion portion cover portion 22, as shown in FIGS. 9 and 10, at the distal end portion of the insertion portion, the cover endoscope insertion portion 1 has a substantially semicircular cross section.
Air supply tube 61, water supply tube 6 in the space on the side of 4
2, the channel tube 63, the raising wire 64, etc. are accommodated, and as shown in FIG. 11, in the middle portion of the insertion portion, an air supply tube is provided on a side portion of the endoscope insertion portion 14 for a cover having a circular cross section. 61 etc. are arranged.

Channel tube 6 into which a treatment tool is inserted
3, the side peripheral surface portion of the tube is joined to the hard member C69, and the tip end side of the tube is housed in the forceps raising portion 75 formed of a recess formed in the tip hard member 66. A raising tube 65 is formed by providing a plurality of notches 76 in a certain direction on the side portion of the portion of the channel tube 63 located on the distal end side of the forceps raising portion 75. The rear end notch of the plurality of notches 76 is provided in the vicinity of the joint portion of the base end portion of the rising tube 65 with the hard member C69.

An annular member 77 made of a metal member or the like is adhesively fixed to the tip of the rising tube 65. Annular member 7
7 has an elliptical shape, and since the rising tube 65 having a circular cross section is inserted therein, the entire circumference of the side surface of the rising tube 65 is not joined to the annular member 77. A space is present between the rising tube 65 and the annular member 77 along the rising direction. The raising wire 6 is provided on the side of the annular member 77 in the direction in which this space is formed.
4 is provided with a hole through which the raising wire 64 can be inserted.
Is inserted and the tip of the wire is housed in the space. In the space between the raising tube 65 and the annular member 77, the tip of the raising wire 64 has a spherical portion 7 having a diameter larger than the wire diameter.
8 is formed, and this spherical portion 78 is locked in the hole on the side of the annular member 77. The spherical portion 78 of the raising wire 64 is formed by melting the raising wire 64 itself by processing such as plasma melting.

The raising wire 64 locked to the annular member 77 is slightly moved between the raising wire 64 and a hole provided in the side portion of the annular member 77 so that the raising wire 64 can swing to some extent with respect to the annular member 77. Clearance is provided.

In order to perform the raising operation in the forceps raising mechanism configured as described above, the raising wire 64 inserted through the insertion portion of the endoscope is moved forward and backward by the operator in the vicinity of the operation portion 12 on the proximal side. By operating, the raising tube 65 connected to the tip of the raising wire 64 is raised. At this time, the raising wire 64
Along with the advancing / retreating operation of (1), the raising tube 65 moves up from the state of FIG. 7 as shown in FIG.

Then, a treatment instrument such as forceps or a catheter is inserted from the proximal side into the channel tube 63 communicating with the raising tube 65, and the treatment instrument is raised from the tip of the raising tube 65. By performing the operation,
It is possible to change the direction of the distal end of the treatment tool to a desired direction.

At this time, the orientation of the distal end of the treatment instrument can be confirmed through the observation visual field of the cover endoscope 4 inserted inside the cover from the lens cover 70 at the distal end of the insertion portion cover portion 22, for example, the inside. When the endoscope is inserted into the duodenal bulb, the tip of the treatment instrument can be guided to the opening of the duodenal papilla by the raising operation, and the treatment instrument can be inserted into the bile duct or pancreatic duct to perform treatment.

Such a raising operation is performed by the raising tube 65.
Since the procedure is performed with the treatment tool inserted through the upper part, a considerable tension for bending the treatment tool is generated in the raising wire 64 that pulls the raising tube 65, and this force is generated.
Also, the connection portion between the rising wire 64 and the raising wire 64 is loaded. in addition,
The raising operation may be repeated when the direction of the treatment instrument is adjusted, and there is a possibility that the raising wire 64 may be twisted due to the attachment method at the proximal side or the bending shape of the insertion portion to increase stress. Come on.

However, in the structure of this embodiment, the raising wire 64 is connected to the raising tube 65 by the engagement of the spherical portion 78 at the tip of the wire and the hole of the annular member 77. Even if a high load, a repeated load, or a stress due to twisting is applied to the connection portion between the tube 65 and the raising wire 64, the raising wire 64 is not restricted in its movement with respect to the annular member 77 to some extent. Since it is locked, the rising operation can be performed without breaking the connection portion.

Further, the raising tube 65 is made of a relatively hard and highly slippery fluororesin as its material in order to ensure the insertability of the treatment instrument, and therefore the raising tube 65 is raised so as to be easily bent. Although the notch 76 is provided on the side portion in the direction, if the operation is still performed so that the treatment tool is not inserted, the tube 6 is lifted.
5 It is conceivable that there is a risk of buckling itself.

However, in the structure of this embodiment, as shown in FIGS. 7 and 8, the notch at the rear end provided in the rising tube 65 is joined to the hard member C69 at the proximal end of the rising tube 65. Since the outer surface of the rising tube 65 is adhered to the hard member C69 at this joint, the bending of the rising tube 65 does not occur at the proximal end of the rising tube 65 during the rising operation. Buckling can be prevented.

As described above, according to the forceps raising mechanism of the present embodiment, the connecting portion between the raising tube and the wire is not broken, and the raising tube does not buckle to collapse the lumen. Therefore, it is possible to prevent problems during the start-up operation, and to reliably insert the treatment tool and perform the start-up operation.

The structure of the connecting portion of the rising wire tip is not limited to the configuration in which the spherical portion is locked in the hole of the elliptical annular member, and the wire tip is adhesively fixed to the annular member with the same configuration. It is also conceivable to apply a configuration or a configuration in which the shape of the wire tip is changed by caulking and locked or fixed by adhesion.

12 and 13 show a second configuration example of the distal end portion of the insertion portion of the endoscope cover including the forceps raising mechanism. In the second configuration example, the arrangement of the notch of the raising tube is changed in the forceps raising mechanism of the first configuration example described above. Other basic configurations are shown in FIGS.
Is the same as that shown in.

In this example, as shown in FIG. 12, in the forceps raising portion 75 at the tip of the endoscope cover, the raising tube 65 is provided.
The rear end notch among the plurality of notches 76 provided on the side portion is arranged at a distance L from the joint between the rising tube 65 and the hard member C69.

When the raising tube 65 having such a structure is raised by pulling the raising wire 64 from the hand side,
As shown in FIG. 13, the raising tube 65 performs a bending operation.
At this time, since the rising tube 65 is made of a relatively soft resin such as a fluororesin, the rising tube 65 itself buckles and deforms so that the tube lumen is crushed due to the bending caused by the rising operation. . However, in the configuration of this example, in the plurality of notches 76 provided in the rising tube 65, the tube is preliminarily changed to the tube so that the rear tube meat portion is deformed to enter the front tube lumen as shown in FIG. Since the curving habit is provided, even if the raising tube 65 is buckled and crushed to some extent by the raising operation, the insertion of the treatment tool can be ensured.

As described above, even with the configuration of the forceps raising mechanism of this example as in the case of the first example, it is possible to reliably insert the treatment instrument even when the raising tube is largely raised. The effect of reliably guiding and treating the treatment tool by the raising operation is provided.

Next, the structures of the endoscope cover 3 having the forceps raising mechanism and the proximal end portion of the insertion portion and the operation portion of the cover endoscope 4 will be described.

FIG. 14 is a sectional view showing the structure of the cover endoscope in the vicinity of the base end portion of the insertion portion, and FIG. 15 is a sectional view showing the structure of the endoscope cover in the vicinity of the base end portion of the insertion portion.

As shown in FIG. 14, the base end of the insertion portion 14 of the cover endoscope 4 is attached and fixed to the cylindrical body 101. The cylindrical body 101 is provided with an index 102 such as a notch indicating the upward direction, and is aligned with the upward direction of the insertion portion 14 and fixed by adhesion or the like. An air supply port 103 is provided on a relatively front side portion of the cylindrical body 101.
Communicates with the pipe 104. The pipe 104 is made of a hard material, passes through the tubular body 101, and projects slightly rearward from the rear end of the tubular body 101. A soft tube 105 extending rearward is airtightly connected to the rear end of the pipe 104. The tube 105 is connected to the expansion tube 34 connected to the dilator 10, and after the insertion section 14 of the cover endoscope 4 is mounted on the insertion section cover section 22, air is supplied into the cover from the air supply port 103. You can do it.

Most of the outer circumference of the cylinder 101 is the outer cylinder 10.
6, the air supply port 103 is opened in the outer cylinder body 106. The opening edge 107 of the air supply port 103 is sufficiently chamfered so as not to damage the seal of the mouth body portion 29 described later. A pin 108 protruding laterally is provided on a side portion of the outer cylindrical body 106 for guiding the position in the rotation direction.

As shown in FIG. 15, in the insertion portion cover portion 22 to be attached to the insertion portion 14 of the cover endoscope, the base end portion of the cover sheath 71 covering the insertion portion 14 is the hard ring 1.
It is attached and fixed to 09. Hard ring 109
A tip end portion of a taper-shaped break-preventing cover 110 made of a flexible member is fixed to the outer periphery of the with a bond or the like. The rear end portion of the break-preventing cover 110 is fixedly connected to the hard mouth portion 29.

Although not shown, scales indicating the length are printed in places on the outer surface of the cover sheath 71. Since the cover sheath 71 is a flexible tube, the scale is printed by flattening the sheath by crushing it in half, first printing on one half, and then printing on the other half, which is the back surface.

The flange 1 is provided on a part of the outer side of the mouth portion 29.
11 is provided. The flange 111 is for hooking on the cover holder 6 described above, and the shape in the vicinity of the flange 111 is uniform even if the models are different.

A seal 112 such as an O-ring is provided on a part of the inside of the mouth portion 29. The inner wall of the mouth part 29 near the seal 112 is adapted to be fitted to the outer tube body 106 of the cover endoscope 4, and in order to prevent rattling, a clearance between the mouth part 29 and the outer tube body 106 is provided. Are dimensioned so that there are few.

In front of the seal 112 of the mouth part 29, an air supply groove 113 is provided on the inner wall corresponding to the upper part of the air supply port 103 so as to facilitate air supply.
10 is provided in the longitudinal direction. Further, an engagement groove portion 114 that engages with the pin 108 is provided on the inner peripheral portion of the mouth body portion 29, and when the pin body 108 is inserted into the mouth body portion 29, the pin 108 engages with the engagement groove portion 114. The outer cylinder body 106 is slidably inserted in the mouth body portion 29.

The part of the mouth part 29 that fits into the outer cylinder body 106 is made of a material softer than the hardness of the exterior of the outer cylinder body 106. As a result, the outer cylinder body 106 of the reusable cover endoscope that is repeatedly used does not wear even if many covers are attached and detached.

FIG. 16 is a sectional view taken along line AA of FIG.
FIG. 17 shows a view of the cross section taken along line B as seen from the rear. FIG.
As shown in FIG. 3, the air supply groove 113 has an arcuate cross-sectional shape, and the air supply port 103 faces the air supply groove 113.
Is open. In order to fit the air supply port 103 in the air supply groove 113, the center line 115 indicating the angular direction, which is an extension of the center line of the air supply port 103, is shown in FIG.
6 must be located between line 115a and line 115b. The angle indicating this range is α.

On the other hand, as shown in FIG. 17, when viewed from the rear end of the mouth portion 29, the engagement groove portion 114 has an arcuate cross-sectional shape, and the pin 108 is slightly rotated in the engagement groove portion 114. You can do it. The pin 108 is the engaging groove 11
The range of movement within 4 is that the center line 116 of the pin 108 is shown in FIG.
7 is a range between the line 116a and the line 116b.
The angle indicating this range is β.

In this embodiment, as can be seen from FIGS. 16 and 17, α is β or more, and the air supply port 103 is always for air supply even if the pin 108 slightly rotates in the engaging groove 114. It is housed in the groove 113 so that the air supply port 103 is not blocked.

Returning to FIG. 15, the rear end of the channel tube 63 inserted through the inside of the insertion portion cover portion 22 has a rear end portion 2.
9 and communicates with the channel 117 in the mouth 29. At the other end of the channel 117 of the mouth part 29,
A separate suction tube 118 communicating with the channel tube 63 and the channel 117 is connected and extends rearward.

FIG. 18 shows the external structure of the vicinity of the endoscope operation section as viewed from above (channel opening side) in FIG. The air supply tube 61 and the water supply tube 62 that have been inserted through the insertion section cover 22 are separated from each other on the side of the mouth part 29 by the air supply tube 119 and the water supply tube 12.
0, and these air supply tubes 119,
The water supply tube 120 extends rearward. Air supply tube 119, water supply tube 120, suction tube 118
Is extended along the side surface of the gripping portion 121 while bending is formed on the way and the traveling is changed at the front end of the gripping portion 121 of the endoscope operating portion 12.

In these tubes, the suction tube 118 is connected to the connector 122 in the rear of the grip portion 121.
The air supply tube 119 is connected to the connector 123, and the water supply tube 120 is connected to the connector 124. The positions where these connectors 122, 123, and 124 are provided are rearward of the grip portion 121, but are not too far from the grip portion, and it is desirable to be near the connecting portion between the operation unit 12 and the universal cord 13 in FIG.

The connector 122 has a suction tube 118.
The end portion of the suction tube 125 (suction line 28 in FIG. 1) that is separate from the above is detachably connected. A connector 126 is detachably connected to the connector 123, and an air supply tube 127 (FIG. 1) that is a separate body from the air supply tube 119 is connected to the connector 126.
Is connected to the air supply line 26). Further, a connector 128 is detachably connected to the connector 124, and a water supply tube 129 (a water supply pipe line 27 in FIG. 1) which is separate from the water supply tube 120 is connected to the connector 128. There is.

The connectors 123 and 124 have different shapes from each other, and therefore, the connector 126 for connecting them.
And 128 also have different shapes from each other, so that the connector 123 and the connector 128 may be erroneously connected or the connector 1
The connector 24 and the connector 126 cannot be connected.

Suction tube 125 (suction line 28), air supply tube 127 (air supply line 26), water supply tube 12
9 (water supply conduit 27) is extended along the universal cord 13 as shown in FIG. 1, and is connected to the fluid control device 9.

FIG. 19 shows a sectional view taken along the line CC of the grip portion 121 in FIG. On the side surface of the grip portion 121, the thickest suction tube 118 is set in the center, and the air supply tube 119 and the water supply tube 1 are provided on both sides thereof.
Each tube is arranged so that 20 is located. By doing so, as shown in FIG. 19, the envelope 130 on the outer circumference of each tube and the gripping portion has a rounded shape as a whole, and since this portion is on the palm side when gripped by the operator, it fits well in the palm of the hand. , The grip is better. Further, by providing a hard or semi-rigid thin plate-shaped cover member so as to substantially coincide with the envelope 130, it is possible to prevent the tubes from being crushed when the grip portion 121 is strongly gripped.

Returning to FIG. 18, the wire tube 79 having the raising wire 64 inserted therein and inserted through the inside of the insertion portion cover portion 22 goes out from a part of the mouth portion portion 29 and changes the traveling, When the end is on the grip 121, the guide pipe 13
It is inserted in 1. The guide pipe 131 is arranged along the side surface (side surface opposite to the tubes) of the grip portion 121, and can be positioned and fixed to the grip portion 121 or the operation portion 12 other than the grip portion 121.

In the guide pipe 131, the raising wire 64 extends from the rear end of the wire tube 79, and the end portion of the raising wire 64 is connected to the rack 132 engaged from the rear of the guide pipe 131. The wire tube 7
9 is fixed to the guide pipe 131, and the raising wire 64 and the rack 132 are slidable with respect to the guide pipe 131.

The guide pipe 131 positioned with respect to the grip 121 protrudes to the side surface opposite to the tubes as shown in FIG. 19 and functions as a finger hook when the operator grips the grip 121. Have

20 and 21 show the structure around the forceps raising knob provided below the bending knob for bending the distal end of the insertion portion in the endoscope operating portion. Gripping part 121
A raising knob 134 is rotatably disposed coaxially with the rotation axis of the bending knob 133 below the bending knob 133 provided on the rear operation unit 12. Rotation axis 1 of raising knob 134
A table 136 is disposed in the vicinity of the table 35, and a rack 132 extending from the end of the guide pipe 131 is inserted between the table 136 and the raising knob 134. In addition, in FIG. 20, the raising knob 134 indicated by the solid line is in the completely inverted position.
The raising knobs 134a indicated by the two-dot chain line indicate the maximum raising positions.

A part of the raising knob 134 around the rotary shaft 135 is provided with a plurality of pinions 137, and the rack 132 is provided with irregularities that can mesh with the irregularities of the pinions 137. ing. The raising knob 134 is rotationally operated coaxially with the bending knob 133, and when the raising knob 134 is in the completely inverted position, the pinion 13 is rotated.
7 and the rack 132 do not engage with each other, but the position of the platform 136 or the like is determined so that the unevenness of the pinion 137 and the unevenness of the rack 132 engage with each other when the raising knob 134 is rotated upward. That is, when the raising knob 134 is rotated, the rack 132 meshed with the pinion 137 and the raising wire 64 move back and forth, whereby the raising tube 65 at the tip of the insertion portion can be raised and inverted.

FIG. 21 is a sectional view taken along line DD of FIG.
The bending knob 133 and the raising knob 134 are rotatable around a rotation shaft 135. FIG. 21 is a view showing a state where the raising knob 134 is being raised, in which the rack 132 and the pinion 137 are meshed on the base 136. Rack 1
The reference numeral 32 is formed in a substantially columnar shape, and concaves and convexes are engraved on the entire circumference thereof so that it can always mesh with the pinion 137 even if it is rotated around the axis. The base 136 is a plate 13 that is non-rotatably attached and fixed to the rotating shaft 135.
It is attached to 8. This rotating shaft 135
It is fixed to the operation unit exterior 140 via a bearing 139. Since the plate 138 is located on the left side surface of the rack 132 and the operation part exterior 140 is located on the right side surface, the rack 1
32 does not come off to the side. An O-ring 141 is provided between the raising knob 134 and the rotating shaft 135, and the raising knob 134 is frictionally held by the rotating shaft 135.

The rack 13 shown by the chain double-dashed line in FIG.
2a shows the position when the raising knob 134 is fully raised. Here, rack 1
By preventing 32a from protruding from the trough portion 142 of the bending knob 133, the rack 132 does not get in the way when the bending knob 133 and the raising knob 134 are simultaneously operated, and the operability can be improved.

When the insertion portion cover portion 22 of the endoscope cover 3 is attached to the cover endoscope 4, the endoscope insertion portion 14 is inserted into the insertion portion cover portion 22 and the insertion portion base end portion is inserted. The connection part with the operation part of is fitted and fixed to the mouth part 29. At this time, if the engaging groove 114 has a size with almost no margin with respect to the pin 108 provided on the outer tubular body 106, it is difficult to align the position of the pin 108 and the engaging groove 114 during the mounting. Since the mounting work is troublesome, the engaging groove 114 has a sufficient width with respect to the pin 108 as shown in FIG. 17 in this embodiment. Therefore, the cover endoscope 4 can be rotationally moved in the circumferential direction within the range of the angle β. On the other hand, the air supply port 10
3 is located below the air supply groove 113, and the air supply port 103 is located at the mouth 2
Since the angular range α that is not blocked by the inner wall of 9 is larger than β, even if the outer cylinder body 106 and the mouth body portion 29 rattle within the range of the angle β, the air is constantly supplied to the air supply port 103. Groove 11
Since 3 is located, air can be rapidly supplied without blocking the air supply port 103.

The air supply port 103 covers the cover sheath 71 for pinholes, etc., mainly after the insertion section cover 22 is attached to the cover endoscope 4 and before the endoscope is used for endoscopic inspection. It is used when performing an airtight check to check for air leaks. This airtightness check can be performed by examining the change in the pressure value in the cover after pressurizing with a certain pressure.

Therefore, according to the structure of this embodiment, even when the mouth portion of the cover has a certain degree of play (play) in the rotational direction with respect to the endoscope, the cover is placed above the air supply port. The air supply groove is always positioned, and it is possible to quickly supply air without any problem simply by mounting the cover. This allows
Since the airtightness check can be performed quickly, the interval (time for preparation and post-cleanup) between endoscopic examinations can be shortened.

Tubes such as an air supply tube, a water supply tube, and a suction tube provided on the endoscope cover 3 are provided inside the insertion section cover section 22, on the grip section 121, and on the grip section 1.
The required conditions are different in each part after 21. Tubes 61 and 6 in the insertion portion cover 22
It is important that the diameters 2, 63 are small in order to prevent the outer diameter of the insertion portion cover portion 22 from becoming large. However, a thin-walled tube is desirable after all, because it is necessary to have a minimum inner diameter required for inserting a treatment tool, and for supplying air, water, and suction. Further, since the tube length is long and the cost of the cover is greatly affected, a tube that is as inexpensive as possible is desired.

The tube 118 on the grip 121,
Reference numerals 119 and 120 denote gripping portions 121 as shown in FIG.
A steep bending shape may be formed at the front end of the tube, or a sudden bending stress may be applied during the mounting work. Further, considering that the operator grips the grip portion 121, a tube that is hard to buckle and is not easily collapsed is desirable. . In terms of size, it may be slightly thicker than the inside of the insert cover 22, but if it is too thick,
The grip portion 121 becomes thick and the grip feeling becomes poor. Therefore,
For example, the inner diameter is made substantially the same as the inside of the insertion portion cover portion 22, and the wall thickness is made slightly thicker, so that the outer diameter dimension is not so large and the structure is strong against buckling and crushing. Since the length of the tube is shorter than that in the insertion portion cover portion 22, even if the cost per unit length is slightly higher than that of the tube in the insertion portion cover portion 22, the influence on the cost of the cover is small.

Tube 1 behind grip portion 121
25, 127, and 129 are the inner diameters of the tubes in the insertion portion cover portion 22 and the grip portion 121, which are the minimum required dimensions, so that the air feeding, water feeding, and suction functions are sufficient. Needs to be thick. Generally, if the tube has the same wall thickness, the thicker it is, the more easily it buckles. For this reason, the tube behind the grip portion 121 may form a loop along the universal cord 13, so that the tube must be hard to buckle even if it has a large diameter. Therefore, in this embodiment, it is conceivable to increase the wall thickness of the tube or to form the tube with a more flexible material. These tubes 125, 127, 129 are used for the grip portion 12
Although it is longer than the length of the tube above 1, if it is a semi-disposable type that can be reused several times, even if the cost of the tube is a little high, it does not affect the cost of the entire cover.

As described above, by changing the tube specifications in the insertion section, on the grip section, and behind the grip section, it is possible to simultaneously satisfy the requirements for different tubes in each part.

Here, the mouth body portion 29 of the insertion portion cover portion 22.
1 and the seal 1 in the outer cylindrical body 106 of the cover endoscope 4.
The positional relationship between the pin 12 and the pin 108 will be described with reference to FIGS. 22 and 23. FIG. 22 shows the configuration of this embodiment.
FIG. 23 shows a conventional general configuration example for comparison.

The mouth part 29 on the proximal side of the insertion part cover part 22
Inside, there is a seal 112 that ensures airtightness with the endoscope.
Is provided, and the airtightness inside the cover is maintained by the seal 112 when the outer cylinder body 106 of the cover endoscope 4 is fitted into the mouth portion 29. That is, the insertion portion cover portion 2
When the user mounts the second body 2, the mouth body portion 29 and the outer cylinder body 106 of the cover endoscope 4 slide while being kept airtight by the seal 112 (hereinafter, this operation is referred to as an airtight slide) and are fitted to each other. To meet. Further, at this time, the position of the mouth portion 29 is restricted in the rotation direction with respect to the cover endoscope 4 by the pin 108 on the endoscope side and the engagement groove portion 114 on the mouth portion side.

In the configuration shown in FIG. 23, the cover endoscope 4 starts from the rear end of the mouth portion 29 (where the engaging groove 114 starts).
The distance L2 to the pin 108 of the
12 to the airtight slide start position (the front end of the outer cylinder body 106) of the cover endoscope 4 with the mouth portion 29.
It is shorter than 1. That is, the distance from the rear end of the mouth portion 29 to the seal 112 is shorter than the distance from the front end of the outer tubular body 106 to the pin 108. For this reason, before the end of the engaging groove 114 is engaged with the pin 108 and the rotation restriction is started, the seal 112 is attached to the cover endoscope 4.
The outer cylinder body 106 is brought into contact with the outer cylinder body 106 to start the airtight slide. When the airtight slide between the mouth part 29 and the cover endoscope 4 is started first in this way, the amount of sliding force becomes heavy, so that the operator aligns the pin 108 with the engagement groove part 114. Must. In this case, since a large amount of force is required for alignment, workability when the cover is attached cannot be said to be good.

On the other hand, in the configuration of this embodiment, as shown in FIG. 22, the distance L2 from the rear end of the mouth portion 29 to the pin 108 of the cover endoscope 4 is from the seal 112 of the mouth portion 29. It is longer than the distance L1 from the cover endoscope 4 to the airtight slide start position with the mouth 29. That is, the dimensions of each part are set so that the distance from the rear end of the mouth part 29 to the seal 112 is longer than the distance from the front end of the outer tubular body 106 to the pin 108.

The length of the airtight slide is set within a certain range because the insertion portion cover portion 22 and the endoscope insertion portion 1 are provided.
This is to ensure that the cover sheath 71 can be kept in a desired state regardless of the length of the cover sheath 4 in relation to the variation in length.

With this structure, the seal 1
The engagement groove 114 and the pin 108 are aligned before the mouth 12 comes into contact with the outer cylinder body 106 of the cover endoscope 4 and the mouth portion 29 starts the airtight slide with respect to the cover endoscope 4. Therefore, the work can be performed easily, and the workability when mounting the mouth body portion 29 of the insertion portion cover portion 22 on the cover endoscope 4 can be improved.

[Appendix] As described in detail above, according to the embodiment of the present invention, the following constitution can be obtained.
That is, (1) In an endoscope apparatus having an elongated insertion portion and an operation portion connected to the proximal end of the insertion portion, the endoscope portion is provided in the operation portion and different in different pushing amounts. An electric switch that controls a function, and an operating member that is provided in a watertight manner with the operation unit and that operates the electric switch by receiving an operating force from the outside, and the operating member is substantially in a pushing direction of the electric switch. An endoscope apparatus configured to operate the electric switch only with respect to an operating force in the same direction.

(2) The endoscope apparatus according to appendix 1, wherein the electric switch is a two-step pressing type switch that controls two functions by two-step pushing amounts.

(3) The endoscope apparatus according to appendix 2, wherein the electric switch is configured to be operated only by a two-step common one-direction pressing operation.

(4) The actuating member has a tubular member arranged coaxially with the electric switch, and a rod member slidably arranged in the tubular member to press the electric switch. The cylindrical member and the rod member are narrowed so as not to open a space within a slidable range, and a predetermined sliding amount is applied only to an operating force in a direction substantially the same as the pushing direction of the electric switch. 2. The endoscope apparatus according to appendix 1, wherein the electric switch is activated.

(5) The endoscope apparatus according to attachment 2, wherein the electric switch is configured to control an air feeding operation and a water feeding operation.

As described above, the electric switch of the two-step pressing type, which is provided in the endoscope operation section and which controls the air supply operation and the water supply operation, is constructed so as to be operated only by the operation force from the vertical direction of the switch, By preventing the switch from being actuated by the operating force from the direction, it is possible to prevent malfunction of functions related to air supply, water supply, etc., and to perform reliable operation.

(6) In addition to the two-step pressing type electric switch, the operation section is provided with a one-step type electric switch which operates only by one pushing amount, and the one-step type electric switch is a vertical switch of the electric switch. The endoscopic device according to appendix 2, which is configured to operate in both the directional and diagonal pushing operations.

(7) The endoscope apparatus according to appendix 6, wherein the one-stage electric switch is configured to control a suction operation.

(8) The endoscope apparatus according to appendix 2, wherein the electric switch is configured to control the bending operation of the endoscope distal end.

(9) The endoscope apparatus according to appendix 8, wherein the electric switch is configured to control the bending speed of the endoscope tip.

(10) The endoscope apparatus according to appendix 8, wherein the electric switch is configured to control the bending amount of the endoscope distal end.

(11) The endoscopic device according to attachment 2, wherein the electric switch is configured to control an endoscopic image.

(12) The electric switch is configured to control stationary and photographing of an endoscopic image.
The endoscopic device according to 1.

(13) In a cover-type endoscope device which uses a removable endoscope cover in combination with an endoscope insertion portion, the endoscope device is connected to a channel tube provided in the endoscope cover, A rising tube having a distal end formed as a free end in the distal end constituent member of the endoscope cover,
An annular member having an inner diameter larger than the outer diameter of the raising tube, having a hole in a side portion, and being attached to the tip of the raising tube and having a space between the raising tube and the raising tube. And a forceps raising mechanism including a raising wire inserted through the endoscope cover and having a tip inserted through and locked in the hole of the annular member. .

With this structure, even if the raising operation is repeatedly performed, the raising operation of the treatment instrument can be reliably performed without breaking the connecting portion between the raising wire and the raising tube.

(14) The raising wire has its wire tip inserted through the hole of the annular member and has an outer diameter larger than that of the hole so that the raising wire is locked to the annular member. The endoscope apparatus according to appendix 13, characterized in that.
With this configuration, the tip of the wire does not deviate from the annular member.

(15) The endoscope apparatus according to appendix 14, wherein the raising wire has a spherical shape in which the wire tip is formed by plasma melting to melt the wire.

(16) The endoscope apparatus according to appendix 14, wherein a tip of the raising wire is locked to the annular member so that the tip of the wire can swing.

(17) The endoscope apparatus according to appendix 14, wherein a tip of the raising wire is fixed to the annular member.

(18) The endoscope apparatus according to appendix 17, wherein a tip of the raising wire is adhesively fixed to the annular member.

(19) The endoscope apparatus according to appendix 17, wherein the raising wire is fixed by crimping the wire tip to the annular member.

(20) The endoscope apparatus according to appendix 13, wherein the raising tube is a tube formed integrally with the channel tube.

(21) The endoscope apparatus according to appendix 13, wherein the raising tube is housed in a forceps raising portion by a recess formed in a distal end constituent member of the endoscope cover.

(22) In a cover-type endoscope apparatus which uses a detachable endoscope cover in combination with an endoscope insertion portion, a tip of the endoscope cover is provided inside the endoscope cover. The hard member has a channel tube joined and fixed at a side portion near the tip of the tube. The tip end side of the joined portion of the channel tube has a free end, and the forceps is lifted by the recess formed in the tip hard member. A forceps raising mechanism that is housed in the upper part and that pulls the tip of the channel tube by a wire to raise the forceps is provided. A plurality of notches are provided to facilitate bending, and the notch at the rear end of the plurality of notches is arranged close to the joint between the distal end hard member and the channel tube. An endoscopic device characterized by being installed.

With this structure, it is possible to prevent the tube from buckling, which is likely to occur during the raising operation, and to secure the insertion of the treatment instrument into the channel tube during the raising operation.

(23) In a cover-type endoscope apparatus which uses a detachable endoscope cover in combination with an endoscope insertion portion, a tip of the endoscope cover is provided inside the endoscope cover. The hard member has a channel tube joined and fixed at a side portion near the tip of the tube. The tip end side of the joined portion of the channel tube has a free end, and the forceps is lifted by the recess formed in the tip hard member. A forceps raising mechanism that is housed in the upper part and that pulls the tip of the channel tube by a wire to raise the forceps is provided. A plurality of cutouts are provided to facilitate bending, and a cutout at the rear end of the plurality of cutouts is at a predetermined distance from the joint between the distal end hard member and the channel tube. An endoscopic device characterized in that the endoscope device is provided separately.

(24) The distance between the notch at the rear end provided on the side portion of the tip portion of the channel tube and the joining portion of the tip hard member and the channel tube is determined by the operation of raising the channel tube. 24. The endoscope apparatus according to appendix 23, wherein the tube lumen is within a range in which the tube lumen does not collapse when the tube is bent in a predetermined direction.

(25) The flesh portions of the tube before and after sandwiching the notch provided on the side portion of the channel tube tip portion are preliminarily formed so as to intersect each other when the channel tube tip portion bends. 24. The endoscope apparatus according to appendix 23, which is characterized in that.

(26) The meat portion of the tube before and after sandwiching the cutout provided on the side portion of the channel tube front end portion, the meat of the tube behind the cutout portion when the channel tube front end portion bends 26. The endoscope apparatus according to appendix 25, wherein a habit is formed in advance so as to enter the inside of the meat of the tube on the front side of the notch.

(27) An endoscope including an elongated insertion portion and an operation portion connected to the base end of the insertion portion,
A cover-type endoscope apparatus that covers at least the insertion portion and has an insertion portion cover having a manipulation portion fixing mouth portion at a base end portion, wherein the mouth portion is rotated with respect to the endoscope. Position regulating means for regulating the position in a direction, an air supply port provided on a side portion of the endoscope for supplying air from the endoscope into the insertion section cover, and the insertion section cover An air supply groove provided on an inner wall of the mouth body portion corresponding to an air supply opening of the endoscope in a state of being mounted on a mirror; An endoscope apparatus, which is arranged so as to be always positioned on the air supply port even when the endoscope is moved within a regulation range by the position regulation means.

With this structure, when the insertion section cover is attached to the endoscope, the air supply groove is always located on the air supply port, so that the air can be quickly supplied.

(28) The inner peripheral portion of the mouth portion is provided with a seal portion for ensuring airtightness with the endoscope,
28. The endoscope apparatus according to appendix 27, wherein the air supply port is located in front of the seal portion and the position restricting unit is located behind the seal portion.

(29) The endoscope according to appendix 27, wherein the position restricting means includes a pin provided on the endoscope side and a groove provided on the mouth portion so as to engage with the pin. apparatus.

(30) The groove portion is formed so as to have a sufficient clearance with respect to the outer size of the pin, and the groove portion and the pin engage in a loosely fitted state. Endoscope device.

(31) An endoscope including an elongated insertion portion and an operating portion connected to the proximal end of the insertion portion and having a grip portion, and a fluid pipe having at least the portion for covering the insertion portion. In a cover-type endoscope apparatus having an insertion section cover provided with a passage, the fluid conduit extends from a proximal end portion of the insertion section cover to form a fluid control device separate from the endoscope. Further, the fluid conduits can be connected to different kinds of conduits in the insertion portion cover, on the grip portion of the operation portion, and behind the grip portion of the operation portion. An endoscopic device characterized by the following.

With this configuration, it is possible to satisfy the conditions of the pipeline required in each part inside the insertion portion cover, on the grip portion of the operation portion, and behind the grip portion of the operation portion.

(32) Of the fluid conduits, the conduit behind the gripping portion is a semi-disposable type which is detachable from the conduit on the gripping portion and can be reused several times. 32. The endoscope device according to supplementary note 31.

(33) The endoscope apparatus according to appendix 31, characterized in that, of the fluid conduits, a conduit inside the insertion portion cover has a smaller diameter than conduits of other portions.

(34) Among the fluid conduits, the conduit in the insertion portion cover and the conduit on the gripping portion have substantially the same inner diameter, but different wall thicknesses. The endoscopic device according to 1.

(35) The endoscope apparatus according to appendix 31, characterized in that, of the fluid conduits, a conduit behind the grip portion has a larger diameter than conduits of other portions.

(36) Of the fluid conduits, the conduit on the grip and the conduit behind the grip are less likely to buckle than the conduit in the insert cover. The endoscope apparatus according to Supplementary Note 31.

(37) An endoscope comprising an elongated insertion portion and an operation portion connected to the base end of the insertion portion,
A cover-type endoscope apparatus that covers at least the insertion portion and has an insertion portion cover having a manipulation portion fixing mouth portion at a base end portion, wherein the mouth portion is rotated with respect to the endoscope. A position regulating means for regulating the position in a direction, and a seal portion provided on the inner peripheral portion of the mouth body portion to ensure airtightness with the endoscope, and the insertion portion cover is provided with the endoscope. When attached to the endoscope, before the seal portion of the mouth portion comes into contact with the outer peripheral portion of the endoscope to hermetically maintain the space between the endoscope and the endoscope, the endoscope is closed by the position regulating means. An endoscopic device characterized in that it is configured to regulate a position in a rotational direction with respect to a body part.

With this configuration, the position regulating means can align the mouth portion side and the endoscope side with a small amount of operation force, so that the workability when the cover is attached becomes good.

(38) The endoscope apparatus according to appendix 37, characterized in that the position regulating means is arranged behind the seal portion.

(39) The endoscope apparatus according to appendix 37, wherein the position regulating means is composed of a concave portion and a convex portion provided in the endoscope and the mouth portion, respectively.

(40) The endoscope according to appendix 39, wherein the concave portion is formed so as to have a sufficient clearance with respect to the convex portion, and the concave portion and the convex portion engage with each other in a loosely fitted state. apparatus.

[0152]

As described above, according to the present invention, an electric switch is provided in the endoscope operation section, and various functions can be controlled by operating instructions of the switch. There is an effect that can be surely performed.

[Brief description of drawings]

FIG. 1 is a perspective view showing an overall configuration of an endoscope apparatus according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an external configuration of an operation unit of the endoscope.

FIG. 3 is a cross-sectional view showing a detailed configuration of operation switches.

FIG. 4 is a perspective view showing a configuration of a connector portion of a universal cord end portion.

5 to 8 relate to a first configuration example of an endoscope cover including a forceps raising mechanism, and FIG. 5 is a view from the direction of the optical field of view at the tip of the insertion portion cover portion of the endoscope cover. Side view seen

FIG. 6 is a longitudinal sectional view of an insertion portion of the endoscope cover and the endoscope for the cover.

FIG. 7 is a longitudinal sectional view of the insertion portion showing the configuration of a forceps raising mechanism provided in the distal end portion of the endoscope cover.

FIG. 8 is an operation explanatory view showing a state in which the forceps raising mechanism of FIG. 7 is raised.

9 is a cross-sectional view taken along the line AA of FIG. 7 showing a cross section of the distal end hard member of the endoscope cover.

10 is a cross-sectional view taken along the line BB of FIG. 6 showing a cross section in the vicinity of the distal end of the insertion portion of the endoscope cover and the endoscope for the cover.

FIG. 11 is a cross-sectional view of a flexible tube portion of an endoscope cover and an intermediate portion of an insertion portion of the endoscope for a cover.

12 and 13 relate to a second configuration example of an endoscope cover including a forceps raising mechanism, and FIG. 12 is a longitudinal sectional view of an insertion portion showing the configuration of the forceps raising mechanism.

13 is an operation explanatory view showing a state in which the forceps raising mechanism of FIG. 12 is raised.

FIG. 14 is a cross-sectional view showing a configuration in the vicinity of a base end portion of an insertion portion of a cover endoscope.

FIG. 15 is a cross-sectional view showing the configuration in the vicinity of the proximal end portion of the insertion portion of the endoscope cover.

16 is a cross-sectional view taken along the line AA of FIG.

FIG. 17 is a view of the rear end of the mouth part seen from the rear along the line BB in FIG.

FIG. 18 is an external configuration diagram of the vicinity of the endoscope operation section as viewed from above in FIG. 15.

FIG. 19 is a sectional view taken along line CC of FIG.

FIG. 20 is a structural explanatory view showing a structure around a forceps raising knob provided in an endoscope operation section.

21 is a sectional view taken along the line DD of FIG.

FIG. 22 is a structural explanatory view for explaining a positional relationship between each of a seal and a pin in the mouth part of the insertion part cover part and the outer cylinder of the cover endoscope.

FIG. 23 shows a conventional general configuration example for comparison.
Explanatory drawing which shows the arrangement | positioning relationship of the seal | sticker in the mouth part of the insertion part cover part, and the outer cylinder of the endoscope for a cover.

[Explanation of symbols]

 3 ... Endoscope cover 4 ... Cover endoscope 9 ... Fluid control device 12 ... Operation part 14 ... Insertion part 30 ... Image switch 31 ... Air supply / water supply switch 32 ... Suction switch 41, 43 ... Electric switch part 42, 44 ... Button part 45 ... Electric switch (two-stage pressing type) 46 ... Cylindrical member 47 ... Rod member 48 ... Switch cover 49 ... Electric switch (single-stage type) 50 ... Rod member 51 ... Switch cover 52 ... Cylindrical body

Claims (1)

[Claims] 1. An endoscope apparatus having an elongated insertion portion and an operation portion connected to a base end of the insertion portion, wherein the operation portion is provided and controls different functions by different pushing amounts. And an operating member that is provided in a watertight manner with the operating portion and operates the electrical switch by receiving an operating force from the outside, and the operating member is in a direction substantially the same as the pushing direction of the electrical switch. An endoscope apparatus configured to operate the electric switch only in response to the operating force of the.