JP3514853B2 - Cover-type endoscope - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope cover and a cover.
Cover-type endoscope used in combination with
In particular, the endoscope cover insertion section cover and cover endoscope
It relates to fixing the mirror to the insertion section. [0002] 2. Description of the Related Art In recent years, endoscopes have been used in industrial and medical fields.
Widely used by Endoscope used in the medical field
When inserted into a living body,
Observation window provided not only on the outer surface but also at the tip of the insertion section
Water supply and air supply lines provided for cleaning
A treatment tool chamber for aspirating body fluid and inserting a treatment tool
Body fluid, blood, etc. also adhere to the inner surface of
To wear. For this reason, the endoscope used once for the patient is reused
When cleaning, in order to prevent infectious diseases, etc.,
Poison had to be done enough. But endoscope
Cleaning and disinfecting is time consuming and
Multiple endoscopes for continuous inspection
And the financial burden was great. [0003] Therefore, the insertion portion of the endoscope must be closed for each examination.
Cover with a bar and insert the endoscope covered with this cover into the living body
At the same time as the inspection is completed
A so-called cover-type endoscope was proposed to be discarded.
ing. [0004] However, an endoscope cover is required for a cover endoscope.
Cover-type endoscopes that are covered and tested
Insert the endoscope cover into the cover and insert the endoscope for the cover
The fixed part with the part may be displaced and obstruct observation.
There is. For this reason, the insertion section cover of the endoscope cover is
To ensure that the cover endoscope insertion section is securely
Japanese Unexamined Patent Publication No. Hei 3-101901 discloses an endoscope having a structure other than a distal end component.
While the locking groove is provided in the peripheral part, the tip constituting part of the insertion part cover
A convex portion is provided on the inner surface of the
A fixed endoscope cover is shown. Also,
Japanese Utility Model Laid-Open No. 3-101905 discloses a distal end component of an endoscope.
And the tip component of the insert cover
The endoscope cover shown in FIG. [0006] SUMMARY OF THE INVENTION
As shown in Japanese Unexamined Patent Publication No. Hei 3-101901, grooves and projections are used.
Endoscope cover that engages and fixes the
The part dimensions of the end component and the tip
If cracks occur, the endoscope tip configuration and cover tip configuration
Rattling occurs between the cover and the front end of the cover.
Provided on the lens cover provided on the component and on the endoscope distal end component
The distance from the optical window cannot be maintained properly. As a result, the flare,
Optical performance problems such as ghosts and vignetting occur
However, in the worst case, the endoscopy cannot be performed.
There was a title. Also, a convex part formed on the cover tip component
Using the elasticity of the endoscope, attach and detach to the groove of the endoscope distal end component
Therefore, if the fixing force is small, it will come off during use,
The groove and the projection are formed when trying to obtain the proper fixing strength.
It is necessary to make the locking part large,
There is a problem that the detachability is deteriorated. On the other hand, Japanese Utility Model Laid-Open No. 3-101905 discloses the above.
As shown in the figure, the distal end of the endoscope and the
When fixing the distal end component with the adhesive, the endoscope distal component
And before the cover tip component reaches the predetermined position,
As a result, the lens cover provided at the top
If the distance from the optical window provided in the endoscope component is appropriate
Optical performance such as flare, ghost, and vignetting
Problems, and in the worst case endoscopy cannot be performed
There was a problem of becoming. [0008] The present invention has been made in view of the above circumstances.
Yes, component dimensions of the endoscope tip and cover tip components
Easy and reliable cover regardless of variation in law
Secure the insertion section of the endoscope to the insertion section cover of the endoscope cover.
The purpose is to provide a cover-type endoscope
You. [0009] Means for Solving the Problems The present inventionbyIn cover type
The endoscope combines an endoscope cover and an endoscope for the cover.
In a cover type endoscope used byThe endoscope cover
A cover tip component provided at the tip of the,This cover
The cover is disposed movably with respect to the end component,
The endoscope is moved relatively to the component,
And between the cover tip configuration part,
Presses the side of the endoscope insertion part covered by the endoscope cover
To fix the endoscope insertion portion to the endoscope cover
Fixing memberCharacterized by having. [0010] [Operation] According to this configuration,Fix the fixing member to the tip of the cover.
By moving the endoscope relative to the components,
By intervening between the cover tip configuration part,
Press the side of the endoscope insertion part covered by the mirror cover to view the endoscope
Fix the mirror insertion part to the endoscope cover. [0011] Embodiments of the present invention will be described below with reference to the drawings.
I do. FIGS. 1 to 4 relate to a first embodiment of the present invention.
FIG. 1 shows an endoscope apparatus of an endoscope cover system, and FIG.
Cross section showing the schematic configuration of the cover tip configuration part of the endoscope cover
FIG. 3 is a view for explaining a schematic configuration of the fixing member, and FIG.
It is a figure showing an operation of a fixed member. As shown in FIG. 1, an endoscope with an endoscope cover system is used.
The mirror device 1 is an endoscope of an endoscope cover type (hereinafter referred to as a cover).
Abbreviated as a type endoscope) 2. The cover type endoscope 2 is an endoscope cover.
(Hereinafter abbreviated as cover) 3 and attached to this cover 3
Endoscope for endoscope cover (hereinafter referred to as endoscope for cover)
4). endoscopy
When performing the operation, the endoscope for the cover is
4 is covered, and after inspection, the cover 3 is discarded.
On the other hand, the cover endoscope 4 is a new clean cover 3.
It is characterized by being covered by and repeatedly used
You. As a result, the endoscope can be cleaned and disinfected after the inspection.
It is unnecessary. The endoscope device 1 of the endoscope cover system is
The cover type endoscope 2 is connected to the cover type endoscope 2.
Cart 5 with various peripheral devices to be installed
A cover holder 6 for holding the bar-type endoscope 2.
You. The cart 5 includes, for example, a light source device 7,
Covers the video processor 8, the fluid control device 9, and the cover 3.
Endoscope cover extender used when attaching endoscope 4 for use
(Hereinafter, abbreviated as an expander) 10 and the like are stored.
You. A video processor is provided on the upper surface of the cart 5.
Monitor that receives an image signal from the camera 8 and displays an endoscope image
The table 11 is placed. The cover endoscope 4 is an elongated endoscope insertion portion.
An operation unit 12 serving also as a large-diameter grip at the proximal end of the hand 14
Are connected to each other, and a universal cord is
13 is extended and the end of this universal cord 13
The connector 15 is provided in the section. The light source device 7 is connected via the connector 15
It is detachably connected to the endoscope 4 for the cover, and the endoscope for the cover.
The illumination light is supplied to the mirror 4. Also, bidet
The processor 8 extends from the side of the connector 15
To the cover endoscope 4 via the signal cable 16
Imaging means connected to the camera and incorporated in the cover endoscope 4
Drive and signal for signal output from imaging means
Performs processing, converts it to a standard video signal, and sends it to the monitor 11
Output. The dilator 10 is connected to an expansion tube 17.
Then, air is introduced into the cover through the expansion tube 17.
This cover 3
To the cover 3 of the cover endoscope 4 by expanding
Can be easily mounted or removed.
The cover 3 is attached to or detached from the cover endoscope 4.
In this case, the cover holder 6 is used.
Endoscope 4 for holding the base end side of cover 3
Insert or remove The cover 3 is provided with a soft insertion portion cover 18.
And thin and soft polymer materials such as vinyl chloride
Cover 19 and universal cord
And a cover unit 20 for inserting the cover endoscope 4.
Unit 14, operation unit 12, and universal code 13
And cover it. The fluid control device 9 includes an air supply control valve 21, a water supply
A control valve 22 and a suction control valve 23 are provided.
The suction is controlled by these solenoid valves. Sending
The air control valve 21, the water supply control valve 22, and the suction control valve 23 are
Air supply pipes respectively extending from the insertion part cover part 18
24, a water supply pipe 25, and a suction pipe 26 are connected. The suction control valve 23 has a suction tube 2.
7 is connected, and a suction device (not shown) is connected to the end of the suction device.
To remove unnecessary body fluids from the endoscope end.
It has become. A water supply tube 28 is connected to the water supply control valve 22.
Water tank 29 is connected to the tip
Have been. Further, two air feeds from the fluid control device 9
The tube 30 extends, and the air supply control valve 21 and the water supply
Link 29. Here, the tip of the insertion portion cover 18 is
A description will be given of the cover leading end constituting part. Shown in FIG.
As described above, the insertion portion cover portion 18 of the cover 3
Hard parts such as metal members such as stainless steel and resin members
A cover tip component 31 formed of a material is provided. this
A step part 32 is formed in the cover tip constituent part 31, and this step
One end of the elongated insertion portion cover skin 33 is fixed to the portion 32.
Have been. The cover front end portion 31 includes a cover inner portion.
Endoscope distal end component, which is the distal end of insertion section 14 of endoscope 4
Endoscope insertion through hole 34 into which 14A is inserted, not shown
Channel hole for air / water supply and channel hole for suction 35
Is formed. Opening on the distal end side of the endoscope insertion through hole
A lens cover 36 is provided in the portion,
A suction tube 37 is fixed to the channel hole 35.
I have. The insertion portion cover outer cover 33 and the suction tube
The probe 37 is adhered or welded to the cover tip component 31.
Has been fixed by. A cover close to the endoscope insertion through hole 34
The through hole 34 for inserting the endoscope is provided on the side surface of the distal end portion 31.
And approximately perpendicular to the endoscope insertion direction
Through holes 38 are formed. The through hole as shown in the figure
38 is a straight hole 3 perpendicular to the endoscope insertion direction.
8A, and a transparent portion for penetrating the endoscope through the distal end surface of the cover distal end component.
So that the opening area increases toward the hole side
And an inclined hole 38B having an inclined surface 39 having an inclination θ.
ing. In addition, the through holes 38 are fixed by dashed lines described later.
The fixing member 40 is provided. Shown in FIG.
The fixing member 40 disposed in the through hole 38 as described above
Stray formed on the outer peripheral side surface of the cover tip constituent part of the hole 38
A flange portion 41 larger than the diameter of the
The power provided in the endoscope insertion through-hole 34 of the distal end component 31
Endoscope tip configuration of insertion section 14 of bar endoscope 4 described later
With endoscope pressing surface 42 for pressing the side surface of the head
Tilt so that the projected area becomes smaller toward the
With the pressing portion 44 having the inclined surface 43 formed at the oblique angle θ1,
It is configured. From the bottom 41A of the flange 41,
The distance (X) to the endoscope pressing surface and the endoscope distal end component 31
From the outer peripheral surface of the step portion 32 to the endoscope distal end component portion 31.
Thickness (t) up to the inner peripheral surface of the endoscope insertion through hole 34
The relationship of X ≧ t holds between them. In addition, the endoscope pressing surface 4
2 is smaller than the opening area of the inclined hole 38B of the through hole 38.
It has been formed. Further, the inclination angle of the inclined surface 43 is
θ <θ1 between θ1 and the inclination θ of the slope portion 39.
The relationship holds. For this reason, the fixing member 40 is
The distal end portion 43A is inserted through the through-hole 3
8 is inserted through the connector 8 as shown in FIG.
Can be disposed on the cover tip component 31
In both cases, after being provided in the through hole 38, the
The flange 41 prevents the endoscope from dropping into the insertion hole.
Stopped and freely movable in the direction of insertion and removal of the endoscope for cover
Has become. As described above, the fixing member 40 is attached to the cover end structure.
The insertion portion cover 18 of the cover 3 disposed on the
Method for fixing bar endoscope 4 to endoscope distal end portion 14A
Will be described. First, as shown in FIG.
The cover endoscope 4 is provided on the cover distal end portion 31 in which 0 is disposed.
Of the endoscope distal end portion 14A of the endoscope
The distal end (not shown) of the component 14A is replaced with the cover distal component 3
1 at a predetermined position. Next, as shown in FIG.
The fixing member 40 disposed on the component 31 is connected to the cover tip component.
Move to the tip side. Then, the inclination of the fixing member 40 is
The inclined surface 43 is a straight hole 38A of the cover leading end component 31.
Abuts on the action portion 38C where the and the inclined hole 38B intersect. Next, the fixing member 40 is further covered.
The tip is moved to the tip end side. Then, shown in the figure
As described above, the inclined surface 43 of the fixing member 40 is
, The fixing member 40 is inclined by the inclined surface 43.
Along the angle θ1 and on the tip end side of the cover tip component
To the side of the insertion section of the medical endoscope. As a result, the endoscope is inserted through the endoscope insertion hole 34.
Of the endoscope distal end component 14A of the cover endoscope 4
The endoscope pressing surface 42 of the fixing member 40 presses and presses the endoscope.
The surface 42, the side surface of the insertion portion, the inclined surface 43 of the fixing member, and the action portion
Endoscope for cover 4 due to frictional force generated between
The endoscope distal end portion 14 </ b> A of the
-It is positioned and fixed at a predetermined position of the distal end component 31. As described above, the cover tip component and the fixing member
Are formed separately, and the fixing member formed separately is
It is movable in the end configuration part in the direction of inserting and removing the endoscope for the cover.
The pressing surface of this fixing member is
Of the endoscope for the cover inserted into the formed endoscope insertion hole
Is configured to move toward the side of the
Of the cover endoscope inserted through the endoscope insertion hole.
The insertion portion can be fixed by pressing with the pressing surface of the fixing member.
it can. As a result, it is possible to
Regardless of the variation in the dimensions of the insertion part of the endoscope,
Insertion section of endoscope cover and insertion section of endoscope for cover
Can be securely fixed. The arrangement of the fixing member on the top end portion of the cover is performed.
The number of locations is not limited to one,
Can increase the fixing strength.
You. In addition, the disposition position of the fixing member is
Provide symmetrically with respect to the central axis,
The end component is positioned so that it is centered within the endoscope insertion hole.
Optical performance such as flare and vignetting
The occurrence of defects can be further reduced. FIGS. 5 to 8 relate to a second embodiment of the present invention.
FIG. 5 is a view for explaining the configuration of the ring-shaped fixing member, and FIG.
FIG. 7 is a diagram showing a schematic configuration of a cover tip configuration portion, and FIG.
Shows a state in which a ring-shaped fixing member is arranged on the tip component
Drawing 8 is a figure showing an operation of a ring-shaped fixing member. The fixing member 40 according to the first embodiment has a cover
A cover hole is formed in a through hole 38 formed on a side surface of the end configuration portion 31.
Whereas it was arranged to be movable in the mirror insertion and removal direction,
As shown in FIG. 8, the fixing member of this embodiment has a cover tip configuration.
In the insertion / removal direction of the cover endoscope engaging with the outer peripheral surface of the portion 51.
Ring-shaped fixation formed in a ring shape so that it can move freely
The member 52. As shown in FIG. 5, the ring-shaped fixing member 52
Is the outer diameter of the outer periphery of the step portion 32 of the cover tip configuration portion 51
Provided with an engaging portion 53 formed to be the same diameter or slightly larger
A ring-shaped member.
The fixing member of the first embodiment is provided on the inner peripheral surface which is the engaging portion 53.
Similarly to 40, an endoscope pressing surface 42 and an inclined surface having an inclination angle θ1
A projection 54 having 43 is provided integrally. On the other hand, as shown in FIG.
51 is formed on the inner peripheral surface of the ring-shaped fixing member 52
The inclined hole 3 of the first embodiment is provided so as to face the inclined surface 43.
The notch surface 55 similar to the inclination θ of 8B
1 from the proximal end surface 51A toward the distal end surface of the distal end component.
It is formed. Note that, as shown in FIG.
When the cover 52 is assembled to the cover tip component 51,
The endoscope pressing surface 42 formed on the raised portion 54 and the cover end structure
The inner peripheral surface of the endoscope insertion through hole 34 provided in the component 51
The substantially same surface or the endoscope pressing surface 42 is transparent for the endoscope insertion.
It is formed so as to be located at the center of the hole 34. Ma
The thickness H1 of the projection 54 and the height of the notch 55
H2 has a relationship of H1> H2. In addition,
The inclination θ of the notch 55 and the inclination angle θ1 of the inclined surface of the projection 54
And the relationship of θ1> θ is the same as in the first embodiment.
is there. Other configurations are the same as those in the first embodiment.
The same reference numerals are given to the members, and the description is omitted. As described above, the stepped portion of the cover tip constituting portion 51
Inserting the cover 3 in which the ring-shaped fixing member 52 is engaged with the outer peripheral surface
The insertion portion 14 of the cover endoscope 4 is fixed to the entry portion cover portion 18.
When setting, the endoscope of the cover endoscope 4 as shown in FIG.
Forming the distal end component 14A in the cover distal end component 51
It is inserted to a predetermined position of the endoscope insertion through hole 34. Then, the endoscope tip inserted to the predetermined position
The end component 14A is fixed to the cover tip component 51.
Therefore, the ring-shaped engagement with the cover tip component 51
The fixing member 52 is moved to the front end side of the cover front end component.
Then, the inclined surface 43 of the ring-shaped fixing member 52 is
The operation in which the end surface 51A and the cutout surface 55 intersect with each other.
Abuts on the use part 51B. Here, the ring-shaped fixing member 52 is further attached.
The bar is moved to the tip surface side of the bar tip component. Then the protrusion
54 is a cover tip configuration along the inclination angle θ1 of the inclined surface 43
It moves to the distal end face side of the unit and to the endoscope distal end component side. this
As a result, the cover endoscope inserted into the endoscope insertion hole 34
4 is a ring-shaped fixing member.
52 is pressed by the endoscope pressing surface 42 of the projection 54 of the
Side surface and inclination of mirror pressing surface 42 and endoscope distal end component 14A
The frictional force generated between the surface 43 and the action portion 51B causes the force.
The endoscope distal end portion 14A of the bar endoscope 4 is
It is positioned and fixed at a predetermined position of the cover tip component 51.
You. Other operations are the same as those of the first embodiment. As described above, the protrusion having the protrusion formed on the inner peripheral surface is formed.
Moving the locking member in the endoscope insertion / removal direction.
The endoscope distal end component of the cover endoscope
It can be detachably fixed to the endoscope insertion through hole of the component.
it can. Also, the fixing member may be connected to the outer periphery of the cover distal end portion.
Fixed by using a ring-shaped fixing member that engages the surface
The part to be gripped by the member becomes large, and the operability of the operator is improved.
The insertion section cover and the insertion section of the cover endoscope.
Easy removal. Other effects are the same as those of the first embodiment.
It is. FIGS. 9 and 10 show a modification of the first embodiment.
9 is a view showing another configuration of the fixing member, and FIG.
It is a figure showing an operation of a fixing member. As shown in FIG.
In the embodiment, the inclination angle θ that forms the inclined surface 43 of the fixing member 40
2 is smaller than the inclination angle θ1 of the first embodiment. sand
That is, θ2 <θ1. In addition, this inclination angle θ2
And the slope of the inclined hole 38B formed in the cover tip configuration portion 31
The relationship of θ2 <θ holds between the inclination θ of the portion 39.
It is formed as follows. Other configurations are the same as in the first embodiment.
The same reference numerals are given to the same members, and the description is omitted. As described above, the inclined surface 43 of the fixing member 40
The inclination angle θ2 is defined by the slope formed on the cover tip component 31.
39 is smaller than the inclination θ.
The endoscope distal end portion 14A of the cover endoscope 4 is covered.
-At a predetermined position of the endoscope insertion through-hole 34 of the distal end component 31
Place and fix the endoscope distal end component 14A with the fixing member 40
When trying to fix the fixing member 40 to the cover tip configuration
When it is moved to the distal end surface side, the distal end 43 of the fixing member 40 is moved.
A comes into contact with the slope portion 39 of the cover distal end forming portion 31 to view the endoscope.
The mirror pressing surface 42 moves toward the endoscope distal end component side,
Pressing the endoscope distal end component 14A of the endoscope 4 for the cover
It is fixed to a predetermined position of the cover distal end component 31. Other
The operation and effect are the same as those of the first embodiment. The notch surface 55 shown in the second embodiment.
Angle θ1 of the inclined surface 43 of the projection 54 with respect to the inclination θ
Is formed at an inclination angle θ2 such that the above-mentioned relationship is satisfied.
As a result, the same operation and effect as in this modification can be obtained.
it can. [0045]Hereinafter, examples that are helpful in describing the present invention.
Will be described.FIG. 11 to FIG.First
Reference exampleFIG. 11 shows the inside of the cover
FIG. 12 shows a state in which the insertion portion of the endoscope is mounted, and FIG.
Of the endoscope distal end component of the endoscope for medical use and the cover of the insertion section
FIG. 13 is a cross-sectional view showing the structure of the tip component, and FIG.
It is a perspective view which shows another structure of a structure part. As shown in FIG.First Reference ExampleThen hippo
End part 60 and insertion part cover of endoscope 4
18 to secure the cover tip component 61 to the cover.
A claw portion 62 formed on the proximal side of the inner peripheral surface of the tip configuration portion 61
Is formed in a notch groove 6 formed on the side surface of the endoscope distal end component 60.
3 and a cover tip configuration including the engaging portion
A ring member 64 as the fixing member 40 is attached to the outer peripheral surface of the portion 61.
Are engaged. At this time, the ring member 64
The claws 65 formed on the inner peripheral surface of the
Formed in the circumferential direction on the side surface of the step portion 32 of the end constituting portion 61
Engage with the groove 66 and engage with the outer peripheral surface of the cover tip component 61
And fixed. That is, as shown in FIG.
An endoscope is provided on the inner peripheral surface of the endoscope insertion through hole 34 of the component 61.
The claw 62 projecting in the circumferential direction perpendicular to the insertion direction is shaped.
It has been done. Further, the endoscope distal end configuration of the endoscope 4 for a cover.
Notch into which the claw portion 62 engages in the circumferential direction of the side surface of the portion 60
A groove 63 is formed. And the endoscope 4 for the cover
Into the endoscope insertion through-hole 34 of the cover tip component 61.
Then, the notch of the cover tip configuration portion 61 is inserted into the notch groove 63.
A step 67 is formed near the claw so that the part 62 can be easily engaged.
It has elasticity. Other configurations are as described above.
It is the same as the example, the same reference numerals are given to the same members, and the description is omitted.
I do. With the above configuration, the cover
The endoscope distal end portion 60 of the endoscope 4 for use as a cover distal end portion
When inserted into the endoscope insertion through-hole 34 of the endoscope 61, the endoscope
The claw portion 62 abuts on the distal end surface of the distal end portion 60,
When the cover endoscope 4 is further inserted into the distal end side,
62 is elastically deformed and moves on the side of the endoscope distal end component,
When the endoscope distal end component 60 is at a predetermined position, the claw 62
Engages with the notch groove 63. Next, the cover tip component
The ring member 64 is inserted into the outer peripheral surface of the step 67
65 is inserted into the groove 66 to insert the insertion portion 14 of the endoscope 4 for a cover.
The fixing of the cover 3 to the insertion portion cover 18 of the cover 3 is completed. As described above, the cover member is constituted by the ring member.
Formed by the claw portion of the end portion and the notch groove of the endoscope distal end portion
By fixing the entry, the engagement between the claw and the notch groove
After the endoscope is configured, it will not be released.
The insertion part cover part and the endoscope insertion part for the cover are careless
It does not come off. Other effects are the same as those of the above embodiment.
is there. It should be noted that the projection 62 extends from the inner surface of the lens cover.
And the distance from the inner surface of the lens cover to the notch groove.
Formed such that the relationship of L1 <L2 is satisfied with separation L2
The endoscope distal end component 60 is always
Energize the inner surface of the bar to adjust the position of the observation window and illumination window (not shown).
Optics such as flare, ghost, etc.
Performance problems can be more reliably prevented. Also, as shown in FIG.
When the step portion 67 is formed on the outer peripheral surface of the portion 61 to form a thin wall,
In both cases, a notch 68 is formed to lead the endoscope in the insertion direction.
A tongue piece 6 having a claw 62 elastically deformable freely in a vertical direction
9, the insertion portion 1 of the endoscope 4 for a cover is formed.
4 can be easily attached to and detached from the insertion section cover 18, and workability is improved.
Significantly improved. FIG. 14 to FIG.Second reference example
FIG. 14 shows an endoscope for a cover in a tip portion of the cover.
FIG. 15 is a view showing a state in which the insertion portion is mounted, and FIG.
C sectional view, FIG. 16 is formed in the peripheral direction of the side surface of the endoscope for cover.
It is a development view of the cam groove which was set. As shown in FIG. 14, in this embodiment, the cover
Insert the endoscope distal end component 70 of the endoscope 4 into the insertion portion cover 1
8 in order to fix it at a predetermined position of the cover tip constituting portion 71,
In the cam groove 72 formed on the outer periphery of the endoscope distal end component 70,
The C-shaped fixing member 73 having elasticity formed in a C-shape
The protrusion 74 provided on the inner peripheral surface is engaged. As shown in FIG. 15, the inside of the cover endoscope 4
FIG. 16 is a development view of the outer peripheral side surface of the endoscope distal end portion 70.
Such a cam groove 72 is formed. This cam groove 72
The end of the endoscope from the side of the endoscope distal end
In the direction from the D axis to the E axis shown in FIG.
A part of the edge is formed. Furthermore, a cam groove near the D axis
A flat portion 70A having the same size as the diameter of the bottom surface of
You. On the other hand, on the outer peripheral surface of
Endoscope of endoscope 4 for cover arranged in through hole for endoscope insertion
The engagement hole 75A corresponding to the cam groove 72 of the tip configuration portion 70 is formed.
The formed engagement groove 75 extends from the F axis to the G axis shown in FIG.
It is formed. The engagement groove 75 has a C-shaped fixing member 7.
3 are provided. And the C-shape
When the fixing member 73 is engaged with the engagement groove 75, the C-shaped
The convex portion 74 provided on the fixing member 73 is inserted through the engagement hole 75A.
And engages with the cam groove 72. In addition, before
The C-shaped fixing member 73 has a notch formed by covering the front end constituting portion 7.
Pressing it into the first engaging groove 75
Therefore, the notch is widened and slidably engages with the engagement groove 75.
Is done. Other configurations are the same as those in the above-described embodiment.
The same reference numerals are given to the members, and the description is omitted. The C-shaped fixing member 73 configured as described above
Of the cover endoscope 4 to the cover distal end portion 71 provided with
When fixing the endoscope distal end component 70, first, the convex portion 74
Position the C-shaped fixing member 73 so as to face the flat portion 70A.
The endoscope distal end component 70 of the cover endoscope 4
Inserted through the endoscope insertion through-hole 34 of the bar tip configuration portion 71
Go. Then, the projection 74 and the endoscope distal end component 70 are dried.
Can be inserted without interfering, and can be
The projection 74 of the C-shaped fixing member 73 is engaged with the formed cam groove 72.
Reach the position to enter. Next, the C-shaped fixing member 7 is inserted into the cam groove 72.
The C-shaped fixing member 73 is substantially
Turn 1/4 turn. Then, the endoscope distal end component 70 is formed.
The protrusion 74 moves along the formed cam groove 72.
The endoscope distal end component 70 of the cover endoscope 4 is located on the distal end side.
To the abutting portion 7 provided on the cover tip configuration portion 71
7 to complete the positioning and fixing. Thus, the cam groove is provided on the cover endoscope side.
Provided and fixed with a convex part that moves this cam groove
By providing the member on the endoscope cover side, the convex
Endoscope end of cover endoscope by moving groove
The component abuts the cover tip component on the insertion part cover.
The lens cover and the lens cover.
The distance from the optical system is set to the endoscope distal end component and the cover distal end
It is constant irrespective of variations in component dimensions of the component. This
Problems with optical systems such as flares and ghosts
The number of titles can be reduced. Further, the position of the cam groove is adjusted with the tip of the endoscope for cover.
By placing it near the end, the effect of biasing to the tip is greater.
Can be done. Further, as shown in FIG.
A projection 73A is provided on the outer peripheral surface of the material 73.KickBy
By pressing this convex portion 68A, it can be easily rotated.
Can be made. The cam groove 72 is provided at the endoscope end.
Over a range of about 90 ° with respect to the circumferential direction of the end component 70.
The lead at this time should be about 3.6
The above-mentioned effects can be obtained regardless of the variation in the part dimensions.
Can be Reference numeral 76A denotes an air supply tube,
Reference numeral 76B is a water supply tube. FIGS. 17 and 18 show the present invention.Third reference exampleTo
FIG. 17 shows the insertion of a cover endoscope into the cover distal end portion.
FIG. 18 is a view showing a state in which the inlet is mounted, and FIG.
It is sectional drawing. As shown in FIG.This reference exampleIn
A screw portion 82 is provided on the outer peripheral surface of the bar tip constituent portion 81.
You. The screw part 82 provided on the cover tip constituent part 81 has
A screw portion 84 provided on the inner peripheral surface of the ring fixing member 83 is screwed.
It is supposed to. Cover this ring fixing member 83
-This screw is fixed by screwing to
The projection 85 provided on the fixing member 83 is provided with the cover endoscope 4.
Press the step 86B formed on the endoscope distal end portion 80 of the endoscope.
Press the endoscope distal end component 80 to cover end distal end component 81
Press the step 86A against the butting part 87 to fix it
It has become. Therefore, as shown in FIG.
A groove 88 through which the protrusion 85 can pass is inserted into the end component 81.
It is formed over the entire length in the entry direction. The endoscope distal end portion 80 has a step portion 86A,
The large diameter portion 80A and the small diameter portion 80B are formed so that 86B is formed.
Are formed. Other configurations are the same as in the above-described embodiment.
The same reference numerals are given to the same members, and the description is omitted.I do. The endoscope 4 for a cover configured as described above
Insert the endoscope distal end portion 80 into the cover portion of the insertion portion cover portion 18.
When attaching to the end configuration portion 81, first, the ring fixing member 8
The third projection 85 is located in the groove 88 of the endoscope distal end component 80.
Let In this state, the endoscope distal end component 80 is inserted through the endoscope.
Into the through hole 34. At this time, the projection 85 and the endoscope
It is inserted without interfering with the mirror tip constituting section 80. So
Then, after the endoscope distal end component is inserted, the ring fixing member 83 is
Screw the screw portion 84 and the screw portion 82 of the cover tip configuration portion 81
Go together. As a result, the ring fixing member 83
The projection 85 moves to the end side and abuts on the step portion 86B, and the endoscope is moved.
The distal end component 80 is brought into contact with the butting portion 87 and the endoscope
The fixing of the end component 80 to the cover tip component 81 is completed.
You. As described above, the protrusion provided on the ring fixing member
Press the step provided on the endoscope distal end component, and
The screw fixing member is screwed into the cover
The endoscope distal end component can be securely and easily
It can be fixed to the part. Other actions and effects
This is the same as the above embodiment. [Appendix] 1. Use the endoscope cover in combination with the cover endoscope.
In the cover type endoscope to be used, the endoscope for the cover
Fix the insertion section and the insertion section cover of the endoscope cover
Cover tip component that constitutes the tip of the insertion section cover
Separately and movably disposed with respect to the cover tip component.
A cover-type endoscope with a fixed member installed. 2. The fixing member is used to insert and remove an endoscope for a cover.
2. The cover-type endoscope according to claim 1, wherein the cover-type endoscope is movable in a direction. 3. The fixing member is provided inside the cover endoscope.
Endoscope end component and cover end component of insertion unit cover
Described in Supplementary Notes 1 and 2 that are interposed between them and pressed and fixed.
Bar endoscope. 4. The fixing member is configured to be the cover tip.
3. The cover according to claim 3, which is provided in a through hole provided in a side surface of the part.
Type endoscope. 5. The front end side of the cover front end portion in the through hole
And a slope that slopes toward the endoscope insertion hole.
On the other hand, the fixed member has a slope facing the slope portion.
The cover-type endoscope according to Supplementary Notes 3 and 4 provided with a surface. 6. The fixing member is configured to be the cover tip.
A ring-shaped fixing member that is disposed in engagement with the outer peripheral surface of the
A cover-type endoscope according to Additional Statement 3. 7. The ring-shaped fixing member has an inclined surface.
And a hand-side end surface of the cover tip component.
Supplementary note 2 and supplementary note 2, wherein a slope portion facing the slope surface is provided at
5. A cover-type endoscope according to 5 or 6. 8. The slope portion and the slope are brought into contact with each other.
To secure the insertion section cover to the endoscope insertion section
Cover type endoscope. 9. The ring-shaped fixing member is a cover
2. The cover according to claim 1, wherein the cover is movable in a circumferential direction of the end component.
Type endoscope. 10. The ring-shaped fixing member is covered by a cover
Claw and endoscope formed in through hole for insertion of endoscope at distal end component
Includes a notch groove formed on the outer peripheral surface of the tip component.
Note 9 to engage and fix the outer peripheral surface of the cover tip component
Cover-type endoscope. 11. The ring-shaped fixing member and a cover
11. The camera according to claim 10, further comprising positioning means for positioning with the tip component.
Bar endoscope. 12. Claw formed on the cover tip component
And the notch formed in the endoscope distal end component
Forming the relationship with the position of the groove to a predetermined value
Endoscope fixed with a ring-shaped fixing member
Part by pressing the part toward the tip of the cover tip component.
13. The endoscope according to claim 10. 13. Cam on the outer peripheral surface of the endoscope distal end component
A groove is provided, and a C-shaped solid having a convex portion engaged with the cam groove.
By moving the fixing member in the circumferential direction of the cover tip
Fix the endoscope distal end component to the cover distal end component
Cover type endoscope. 14. Screw on the outer circumference of the cover tip component
And a screw to be screwed into the screw portion.
The step of the endoscope distal end component is
A cover-type endoscope that is pressed to the end and fixed. [0081] As described above, according to the present invention, endoscope
Variation in component dimensions of the mirror tip and cover tip components
Regardless of the key, easy and reliable
Insert the insertion section into the insertion section cover of the endoscope cover.
A bar endoscope can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 to 4 relate to a first embodiment of the present invention,
FIG. 1 is a diagram showing an endoscope apparatus of an endoscope cover system. FIG. 2 is a cross-sectional view showing a schematic configuration of a cover tip configuration portion of the endoscope cover. FIG. 3 is a diagram illustrating a schematic configuration of a fixing member. FIG. 4 is a view showing an operation of a fixing member. FIGS. 5 to 8 relate to a second embodiment of the present invention.
FIG. 5 is a diagram illustrating a configuration of a ring-shaped fixing member. FIG. 6 is a diagram illustrating a schematic configuration of a cover tip configuration portion. FIG. 8 is a view showing the operation of the ring-shaped fixing member. FIGS. 9 and 10 relate to a modification of the first embodiment. FIG. 9 is a view showing another configuration of the fixing member. FIGS. 11 to 13 relate to a first embodiment of the present invention, and FIG. 11 shows a state in which an insertion portion of a cover endoscope is mounted on a cover distal end portion. 12 is a cross-sectional view showing a configuration of an endoscope distal end portion of the endoscope for a cover and a cover distal end portion of an insertion portion cover portion. FIG. 13 is a perspective view showing another configuration of a cover distal end portion. ] 14 to 16 relates to a second exemplary embodiment of the present invention, FIG. 14 is a cover to cover the distal end construction part FIG. 15 is a cross-sectional view taken along the line CC of FIG. 14. FIG. 16 is an exploded view of a cam groove formed in a circumferential direction of a side surface of the endoscope for a cover. FIG. FIG. 18 relates to a third reference example of the present invention, and FIG. 17 shows a state in which an insertion portion of a cover endoscope is attached to a cover distal end component. FIG. 18 is a sectional view taken along the line HH in FIG. Description 14A: Endoscope distal end component 31: Cover distal end component 40: Fixing member

Claims (1)

(57) [Claim 1] In a cover type endoscope which uses an endoscope cover and a cover endoscope in combination, a cover tip configuration provided at a tip of the endoscope cover Department
And is movably disposed with respect to the cover tip component.
Relative to the cover tip component, and
Be sure to intervene between the tip of the endoscope and the cover tip component.
An endoscope insertion portion covered by the endoscope cover
Of the endoscope insertion section against the endoscope cover by pressing the side of
Cover endoscope, characterized by a fixing member for fixing, further comprising a.