JP3504431B2 - Endoscope - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] [0001] The present invention relates to an endoscope. [0002] 2. Description of the Related Art Generally, an insertion portion of an endoscope is a long flexible member.
Bending operation remotely connected to the tube and the tip of the flexible tube
Curved part, and an objective lens connected to the tip of the curved part
And other components that incorporate optical components such as
Have been. [0003] As shown in FIG.
Connects a plurality of bending pieces 100a via a pivot pin 101.
A wire is attached to the outer periphery of the core body 100 rotatably connected to each other.
A blade 102 made of a material knitted in a tubular shape is fitted,
In addition, the outer periphery of the blade 102 is made of an extensible polymer material.
The outer cover member 103 is covered. [0004] The outer skin member 103 makes the inside of the endoscope watertight.
In order to keep, the distal side is the outer periphery of the proximal end of the distal end component 112.
And the base end is the distal end of the flexible tube portion 113.
Is covered on the outer periphery of the part, and is covered on the tip constituent part 112.
To the outer periphery of the distal end portion of the outer cover member 103 and the flexible tube portion 113.
Each along the outer periphery of the base portion of the coated outer member 103
To bind and bind the filament 104 such as
Thus, the outer cover member 103 is fixed. Soshi
To apply the adhesive 105 around the filament 104
Thereby, the fixed state of the outer cover member 103 is strengthened. [0005] By the way, such a problem is solved.
The fixing of the outer skin member 103 by means is performed by inserting a small-diameter endoscope.
Binding of the filament 104 in a limited area on the outer periphery of the part
Must be practiced, and
It is troublesome work. An adhesive 105 is attached to the outer periphery of the filament 104.
Is applied to the surface exposed on the outer surface of the endoscope insertion section.
To prevent the subject's mucous membrane from being damaged by the attachment site,
Do not form the swelling shape with the adhesive 105 smoothly.
It has to be fairly skillful. [0007] For this reason, conventionally, the outer cover member 10
The fixing work 3 includes the repair and replacement of the outer skin member 103,
Requires high skills and relatively high cost and time
Is spent. The present invention has been made in view of the above problems.
The purpose is to require advanced skills.
Easy to cover withoutWith a large fixed strengthFix
It is to provide an endoscope that can be used. [0009] [MEANS FOR SOLVING THE PROBLEMS]
In addition, the present invention relates to a flexible tube,
Bent part and the tip component connected to the tip of the bent part
An outer skin having an insertion portion formed of the outer shell and forming an outer skin of the curved portion
The two ends of the member are respectively the tip of the flexible tube and the tip component
Endoscope fixed to the base end of theThe flexible tube
At least one of the distal end of the portion and the proximal end of the distal component.
One has an outer peripheral surface on which the end of the outer member is overlapped,
The outer peripheral surface has a projection, and the outer surface is overlapped with the outer peripheral surface.
An end portion of an outer cover member and the flexible tube portion or the tip end configuration
A portion of the portion where the outer peripheral surface is provided,
Formed as a fixed part made of grease, and fused the fixed part
The flexible tube portion or the end of the outer skin member
Fix to the outer peripheral surface of the tip componentLike
You. [0010] BRIEF DESCRIPTION OF THE DRAWINGS FIG.
An embodiment will be described. 1 to 4 show the present invention.
1 shows a first embodiment of the present invention. As shown in FIG.
In addition, the endoscope 1 includes an operation unit 2 having various operation means,
The main body is composed of the long and small insertion section 3 inserted into the body.
It is configured. The operation part 2 and the insertion part 3 are large-diameter gripping parts 4.
Are connected to each other. Universal unit on the operation unit 2
Monkey cord 5 is connected and universal cord 5
Is detachably connected to a light source device (not shown)
A connector 6 is provided. Universal code 5
The illumination light from the light source device is inserted into the tip of the insertion portion 3 inside.
Light guide fiber that leads to the endoscope 1
Signal line for transmitting the image signal, air / water supply line, suction line
Etc. are arranged. In addition, the connector 6 is connected to the endoscope 1.
Connected to a processor (not shown) that processes the signal of the observation image.
The connection cable to be continued can be connected. The insertion section 3 is a long flexible tube having flexibility.
Part 3a and connected to the tip of the flexible tube part 3a to remotely
A bending portion 3b to be bent and connected to the tip of the bending portion 3b;
Hard lens that incorporates optical elements such as an objective lens
And a distal end component 3c. The operating section 2 causes the bending section 3b to perform a bending operation.
Operation knob 7 is provided.
By rotating, the bending portion 3b can be moved up, down, left, and right
In this direction. Also, the operation unit 2
The air / water supply button 8 and the suction button 9 are adjacent to each other
Press these buttons 8 and 9 to operate
By doing so, the air is sent into the body through the air / water supply conduit.
Air / water supply and suction from the body through the suction line.
You can do it. The end of the operation unit 2 has an image
Switches 10... For performing degree correction and the like are provided.
Operating these switches 10.
Control of signal transmission to the processor,
Image control such as still image output is performed.
You. In the vicinity of the base end of the grip portion 4, a forceps
Which treatment tool is inserted into the insertion portion 3
A treatment tool insertion port 11 for introducing the
The treatment instrument insertion chamber 11 is inserted through the treatment instrument insertion port 11.
The treatment instrument is inserted through the channel into the distal end of the insertion portion 3 (the distal end portion 3
c) can be led out from the opening 12 provided in
It has become so. As shown in FIG. 2, the curved portion 3b has a cylindrical shape.
The plurality of bending pieces 15a are turned around each other via the pivot pin 16.
The wire is formed into a tube around the outer periphery of the core body 15 movably connected.
The braided blade 17 is fitted, and
The outer periphery of the door 17 is covered with a skin member 18.
You. In this case, the most advanced bending piece 15 constituting the core body 15
a is fixed to the proximal end of the distal end component 3c, and is curved at the rear end.
The piece 15a is rotatably connected to the distal end of the flexible tube 3a.
ing. In addition, the leading end component 3c covers the entire circumference.
The tip cover 19 is fixed in a watertight manner by bonding or the like.
You. As shown in FIG. 3, the flexible tube portion 3a has a band shape.
Outer periphery of a spiral tube 23 formed by spirally forming a metal plate or the like
Then, the blade 22 formed by knitting a wire into a tube is fitted.
Then, the outer periphery of the blade 22 is covered with a resin outer cover 21.
It is configured. A tubular contact is made at the tip of the flexible tube portion 3a.
A connecting member 20 is provided, and this connecting member 20
The entire circumference of the base end portion is liquid-tightly covered with the resin outer cover 21.
Thereby, it is fixed to the flexible tube portion 3a. As shown in FIG. 2, an outer cover member of the curved portion 3b
18 are both ends of the endoscope 1 in order to keep the inside of the endoscope 1 watertight.
Are attached to the distal end portion 3c and the flexible tube portion 3a.
That is, the distal end portion of the outer cover member 18 is attached to the distal end portion 3c.
So as to cover the entire circumference of the base end portion of the covered tip cover 19.
The base portion of the outer skin member 18 is attached to the flexible tube portion 3.
a covering the entire periphery of the distal end of the connecting member 20 provided at the distal end of
It is attached as follows. In the above configuration, the present embodiment
The outer cover member 18 is made of an extensible polymer material, specifically,
Formed entirely of a thermoplastic resin such as urethane
And a tip cover to which the end of the outer cover member 18 is attached.
19 and the connecting member 20 are also made of a thermoplastic material such as polycarbonate.
The outer cover member 18 is formed of resin and is described below.
Cover the front end cover 19 and the connecting member 20
Be worn. That is, as shown in FIG.
8 at the outer periphery of the tip cover 19 and the connecting member 20
In the state where it is fitted, the fitted portion, that is, the tip
The cover 19 and the connecting member 20 are overlapped with the outer cover member 18.
The part 24 (hereinafter referred to as the adhered part 24) is a pair of
The welding is performed by the heating members 25 and 26. In this case, the heating members 25 and 26 are
Built-in heating wire, its radius of curvature is inserted into the endoscope
It has heating surfaces 25a and 26a substantially equal to the outer diameter of the portion 3.
You. The heating surfaces 25a and 26a are supplied from a power source (not shown).
By causing the heating wire to generate heat by electricity,
  It is heated to around the melting temperature of 18.
You. The width of the heating surfaces 25a and 26a is determined by the insertion portion of the endoscope.
3 may be the same as the length of the adherend 24 along the longitudinal axis direction.
Is set larger than that. Therefore, each of the attached portions 24 of the outer cover member 18 is
The heating surfaces 25a, 26a of the heating members 25, 26
Pressing from above and below, the heating surface 25a,
If 26a is heated, the outer cover member 18 is melted,
19 and the interface between the connecting member 20 and the outer covering member 18 are melted.
Fusion bonded. Then, further, in the longitudinal direction of the insertion portion 3
, The heating members 25 and 26 are rotated by 90 ° in the same direction.
The heating surfaces 25a and 26a are attached to each
If the same heat treatment is performed by pressing, the outer skin member 18
Completely fixed to the end cover 19 and the connecting member 20
And the inside of the curved portion 3b is held in a liquid-tight state with respect to the outside.
You. In FIG. 4, reference numeral 30 denotes a nozzle;
Is an objective lens, 32 is an illumination lens,
Of the end cover 19 or the end structure
It is provided integrally with the component 3c. As described above, the endoscope of the present embodiment
1 is heating of the heating members 25 and 26 for each of the adherends 24
Just press the surfaces 25a and 26a at least twice and heat them
In a state where the outer skin member 18 is covered on the outer periphery of the curved portion 3b,
Because it can be fixed, it does not require advanced skills
The skin member 18 can be easily fixed. in this case,
The pressing force of the heating surfaces 25a and 26a against the
The heating temperature and heating time of the heating surfaces 25a and 26a are fixed.
, The adhered state of the adhered portion 24 is
The quality of the endoscope 1 can be uniform with respect to the endoscope 1.
Can always be kept constant. The endoscope 1 of the present embodiment is a conventional endoscope.
Do not fix the outer skin member 18 using a thread or an adhesive.
Time for drying the adhesive is not required
18 can be installed in a short time and inserted
No protruding part such as thread or adhesive has been removed on the outer surface of the part 3.
Therefore, the insertability of the insertion portion 3 can be improved, and the protrusion of the outer surface of the insertion portion 3 can be improved.
The projecting part may hurt the living body.
No. FIG. 5 shows a second embodiment of the present invention.
You. In the present embodiment, the tip component 3c is made of a thermoplastic resin.
Accordingly, the outer member 18 of the curved portion 3b is formed by the formation.
As in the first embodiment via the distal end cover 19 as in the first embodiment.
So that it can be directly attached to the tip component 3c without performing
are doing. That is, the distal end portion of the outer cover member 18 has a distal end configuration.
The heating shown in FIG. 4 in a state of being fitted over the entire periphery of the base end of the portion 3c.
It is melted and fixed by the members 25 and 26. In this case, the tip to which the outer skin member 18 is attached
For example, an annular projection 33 is formed on the outer peripheral surface of the component 3c.
Are formed, and the outer cover member is formed by the projections 33.
18 increase the frictional resistance in the longitudinal direction of the insertion portion,
The fixing strength of the outer cover member 18 is increased. Other configurations are the same as those of the first embodiment.
The same (the same components as those in the first embodiment are denoted by the same reference numerals).
And the base end of the outer cover member 18 is also a flexible tube portion.
3a is attached so as to cover the entire periphery of the distal end portion of the connection member 20.
Have been. As described above, according to the present embodiment, the outer skin
The member 18 is directly attached to the distal end component 3c by the attachment portion 24.
Since it can be fixed by melting, as in the first embodiment,
Eliminates the need for a special tip cover 19, reduces the number of parts,
A simple configuration can be provided. Also, the tip cover 19
There is no need to worry about the liquid-tight performance between the
It becomes. In this embodiment, the protrusion 33
Does not need to be annular, and the fixing strength of the
In the case of increasing the size, for example, the circumference of the tip configuration portion 3c
A plurality may be provided along the direction. Also, the protrusion 3
3 is the outer periphery of the connecting member 20 as well as the tip component 3c.
It may be provided on the surface. Also, in the first embodiment
In this case, the projection 33 is provided on the outer peripheral surface of the tip cover 19.
Is also good. FIGS. 6 and 7 show a third embodiment of the present invention.
Is shown. Note that the same components as those in the first embodiment are used.
Are denoted by the same reference numerals and description thereof will be omitted. Illustrated
As described above, in the present embodiment, the outer cover member 18 of the bending portion 3b is provided.
Connecting pipes 34, 3 made of soft thermoplastic resin at both ends
4 and connect the connecting pipes 34, 34 to the heating member described above.
25, 26 or high-frequency / ultrasonic equipment
Melted and fixed to the tip cover 19 made of grease and the connecting member 20
I am trying to do it. In addition, the connection pipes 34, 34 are flexible.
Not only thermoplastic resin, but also hard thermoplastic resin
Is also good. Connection between the outer cover member 18 and the connection pipes 34, 34
Is used to connect the ends of the outer cover member 18 to the outer periphery of the ends of the connection pipes 34, 34.
Are connected so as to be fitted to the connection pipes 34 and 34.
A thread-like body 35 such as tex is provided around the outer periphery of the
Wrap and bind, glue around thread 35
This is done by applying the agent 36. After that,
The other configuration is the same as that of the first embodiment. As described above, according to the present embodiment, the outer skin
The member 18 does not need to be formed of a thermoplastic resin, and
For example, it can be formed by a highly extensible elastomer.
Therefore, the bending performance of the bending portion 3b can be improved.
it can. Also, with the improvement of the bending performance of the bending portion 3b,
Reducing the operating force of the bending operation knob 7 (see FIG. 1)
Can be. FIGS. 8 and 9 show a fourth embodiment of the present invention.
Is shown. In the present embodiment, the distal end portion of the
The configuration attached to the distal end component 3c is different from that of the third embodiment.
The other configuration is the same as that of the third embodiment.
You. Therefore, the same components as those of the third embodiment are used.
Therefore, the same reference numerals are given and the description is omitted. As shown in the figure, a highly extensible elastomer
A cylindrical cover body 38 is provided at the tip of the outer skin member 18 made of
It is connected. The cover body 38 and the outer skin member 18
The connecting means is the connecting tube 34 and the outer skin in the third embodiment.
It is the same as the means for connecting to the material 18. As shown in an enlarged manner in FIG.
Is set so that its inner diameter is smaller than the outer diameter of the tip cover 19.
Then, it is fitted around the outer periphery of the front cover 19. Hippo
-The tip of the body 38 projects radially inward of the cover body 38
An annular projection 38a is integrally formed.
The protruding portion 38 a is in contact with the front end surface of the front end cover 19.
You. Therefore, the cover body 38 is located outside the tip cover 19.
Retained by elastic force around the circumference,
Axially proximal end by its annular projection 38a
Movement is restricted, and the cover body 38 and the tip
The contact surface with the bar 19 is kept watertight. A spring member is provided at the base end of the cover body 38.
Are embedded. The claw part 40 is
It has a shape that is bent in the shape of a “レ”, and its bending
The shaved end 40a is exposed from the inner surface of the cover body 38.
Projecting into a notch 39 provided in the tip cover 19.
You. In this case, the end portion 40a of the claw portion 40 is
9 is engaged with the notch 39 in a state of being directed to the tip side.
ing. Therefore, the cover body 38 is attached to the tip cover 19.
On the other hand, it is prevented from dropping in the tip direction. The claw portion 40 is provided inside the cover body 38.
If it protrudes and engages, it should be shaped like
It is not limited to this, and may be cylindrical. I explained above
As described above, according to the present embodiment, the outer skin member 18 is
When assembling, it is connected to the base end side of the outer skin member 18.
It suffices to melt and fix only the connection member 34, simplifying the work
Can be achieved. In addition, the tip covered on the outer periphery of the tip component 3c
The end cover 19 does not need to be formed of a thermoplastic resin.
No. FIGS. 10 and 11 show a fifth embodiment of the present invention.
The form is shown. In this embodiment, the cover body 38 has a tubular shape.
Of the fourth embodiment except that the nozzle 30 of FIG.
Same as the form. Therefore, the same as the fourth embodiment
The same reference numerals are given to the components of
I do. As shown in FIG. 11, the nozzle 30 has a cover
It extends through the distal end surface of body 38. Of cover body 38
The portion of the nozzle 30 protruding inward is located inside the distal end component 3c.
The air / water supply line 46 arranged in the
And protrudes outside the cover body 38.
The part of the nozzle 30 that comes out is not shown in the front cover 19.
Bends toward a large objective lens. That is,
The bar 38 together with the tip cover 19 is attached to the tip component 3c.
Air supply / supply through the air supply / water supply line 46 in the attached state
When water is applied, the objective lens is washed through the nozzle 30.
Can be purified. According to such a configuration, the nozzle 30
By connecting to the air / water supply line 46, the cover body 38 and the tip
The relative positional relationship between the component 3c and the tip cover 19 is 1
One is decided. Note that only the nozzle 30 is attached to the cover body 38.
The objective lens 31 and the illumination lens 32 as shown in FIG.
By providing the opening 12, it is possible to replace and repair the outer cover member 18.
Repair and replacement of these members 30, 31, 32 are also easy
Can be implemented. FIGS. 12 to 18 show a sixth embodiment of the present invention.
The form is shown. As shown in FIG.
The endoscope 1 ′ includes an operation unit 2 having various operation means and a body.
The main body is composed of a long and small insertion portion 3 inserted into the inside.
Has been established. The operation unit 2 and the insertion unit 3 are connected via the holding unit 4
Linked to each other. The operation unit 2 has a universal
Cable 5 is connected to the end of the universal cord 5
Is a connector that is detachably connected to a light source device (not shown)
6 are provided. In the universal cord 5, the light
Light guide that guides the illumination light from the source device to the tip of the insertion section 3
And transmits the signal of the observation image obtained by the endoscope 1 '.
A signal line or the like for transmission is provided. In addition, connector 6
Is a processor for processing the signal of the image observed by the endoscope 1 '.
Connecting cable 62 connected to the cable 60 (see FIG. 16)
(See FIG. 16). The insertion portion 3 is a long flexible tube having flexibility.
Part 3a 'and the distal end of the flexible tube part 3a'
The bending portion 3b which is bent in a curved manner, and the end of the bending portion 3b
Hardened by incorporating optical components such as an objective lens
And a quality tip component 3c. Inside the endoscope 1 ′, liquid and
Suction line 50 for suction and recovery of gas and gas, and an objective lens
Liquid / air to remove mucus etc. adhering to the surface of
Air supply line 54a and water supply pipe for water supply / air supply to the body
A road 54b is provided. Air supply line 54a and water supply line
54b is inserted to reduce the outer diameter of the endoscope distal end.
In the vicinity of the leading end component 3c of the inlet 3, the two are merged in the vicinity of the leading end component 3c to form one gas supply / supply.
A water conduit 54 is formed. Further, the suction line 50 is inserted.
A treatment instrument insertion chamber for guiding the treatment instrument in the entrance 3
Also serves as a channel 52. In addition, the air supply / water supply line 54
A nozzle 30 is attached to the tip, and the
In the vicinity of the base end, the treatment tool is disposed in the insertion section 3.
Treatment tool insertion for introduction into treatment tool insertion channel 52
An entrance 11 is provided, and the treatment instrument insertion port 11
The treatment instrument is inserted into the insertion section 3 through the treatment instrument insertion channel 52.
From the opening 12 provided at the front end (the front end component 3c)
It can be derived. An air supply line 54a and a water supply line 54b
Passes through the air / water supply cylinder 49 disposed in the operation unit 2.
Extend through the universal cord 5 and connect
To the air supply cap 58 and the water supply cap 59 provided in the
Each is connected. On the other hand, the suction line 50 is provided in the operation unit 2.
Extending through the suction cylinder 56
Suction base 5 provided on connector 6
7 is connected. As shown in FIG. 13 and FIG.
The flexible tube portion 3a 'of the insertion portion 3 of 1' is made of a band-shaped metal plate or the like.
A wire rod is formed around the spiral tube 23 formed in a spiral shape.
The braided braid 22 is fitted to the
The outer periphery of the cable 22 is covered with a resin sheath 21.
You. A tubular connecting member 20 is provided at the tip of the flexible tube portion 3a '.
The connecting member 20 has an entire periphery at its base end.
Flexible by being covered in a liquid-tight manner by the resin outer cover 21
It is fixed to the pipe 3a '. The connecting member 2
0, the outer skin is formed by the same means as in the first embodiment.
It is attached to the base end of the member 18. The spiral tube 23
A heating wire is formed spirally between the
Heater member 70 is a part of flexible tube portion 3a 'or
It is interposed over the entire length. As shown in FIG. 15, the resin sheath 21 has
Multiple as a temperature measuring device formed by thermocouples etc.
Are embedded. Shown in FIG.
As described above, the heater member 70 has the first electric line 73a.
Are connected, and the first electric line 73a is
Through the entrance 3, the operation unit 2, and the universal cord 5,
Electrically connected to a first contact 76 provided on the connector 6
Have been. In addition, a second power is applied to each of the temperature measuring members 72.
Are connected to each other, and these second power
The air lines 74a are composed of the insertion part 3, the operation part 2,
The first cord provided on the connector 6 through the
It is electrically connected to the contact 76. The first electric line connected to the first contact 76
.. Are connected to the connector 6.
Processor 6 via a continuous cable 62 connected to
0 connected to a second contact 77 provided at
60, the third and fourth electric lines 73b,
Control device provided in processor 60 via 74b
79 is electrically connected. In the above configuration, first, the processor 60
When power is supplied from a power supply (not shown),
And the heater member 70 via the first electric line 73a.
Is fed. By this power supply, the heater member 70
Heat is generated and the temperature is as shown in the heater temperature curve shown in FIG.
Changes to At this time, the temperature measuring member 72 is
The temperature of the surface of the insertion portion 3 that changes with the heat generation of the material 70
The temperature signal is constantly measured and the temperature signal is transmitted to the second electric line 74a.
To the control device 79 via The control device 79 includes a plurality of temperature measuring members 72.
.. Are calculated based on the calculation result.
As shown in FIG. 17, the temperature of the insertion portion 1 becomes about 37 ° C.
Power supply to the heater member 70 is controlled as described above. Multiple temperature
The temperature signal from the temperature measuring members 72.
Detected as signal data as shown in (b) to (d)
The control device 79 transmits these signal data (FIG. 18).
(B) to (d) of each of the signal data)
One of the hottest signal areas is extracted and added.
8 (a). Soshi
Then, the control device 79 outputs the calculation data (FIG. 18)
The above-described power supply control is performed based on (a). The operation data as shown in FIG.
The corresponding one is shown as a “measurement temperature graph” in FIG.
Have been. The control device 79 uses the measured temperature graph
If the measured temperature obtained is lower than 37 ° C, the heater temperature
Power supply to heater member 70 is controlled so that temperature becomes 37 ° C
If the measured temperature is higher than 37 ° C, the heater temperature
To the heater member 70 so that the temperature becomes the same as the measurement temperature.
If the measured temperature exceeds 40 ° C,
The power supply to the power supply member 38 is stopped. As described above, the endoscope of the present embodiment
1 'indicates that the temperature of the insertion portion 3 is almost equal to the temperature in the body cavity (37 ° C.).
Peristaltic movement during insertion into body cavity
Can be suppressed, and the insertability of the insertion portion 3 can be improved. Further, inside the insertion portion 3, a water supply pipe
54b is maintained at a temperature almost the same as the temperature in the body cavity.
Cleaning of the objective lens with water solution
During cleaning, dew condensation does not occur on the inner surface of the objective lens.
In addition, a clear inspection view can be always maintained. Note that, according to each of the above embodiments,
Various configurations can be obtained. (1) a bending portion main body, a skin member covering the bending portion main body,
A fixing portion that is a part of the distal end portion and the proximal end portion of the outer skin member
In the endoscope fixed to the bending portion main body,
Thermoplastic on at least one of the distal end and the proximal end of the outer member
An endoscope characterized by using a conductive resin. (2) the outer skin member is at least one of a distal end portion and a proximal end portion
Is melted and fixed to the bending portion main body by heating.
The endoscope according to item (1), wherein (3) The outer skin member has at least one of a distal end portion and a proximal end portion.
In the meantime, it is melted and fixed to the bending portion main body by ultrasonic waves.
The endoscope according to item (1), wherein (4) The outer skin member has at least one of a distal end portion and a proximal end portion.
In this case, the bending part body is fused and fixed by high frequency.
The endoscope according to item (1), wherein (5) The melting and fixing of the outer cover member and the curved main body portion is performed by a curved book.
Item (1) is characterized by being performed around the entire body
Endoscope. (6) A small amount of the distal end and the proximal end of the skin member
Use thermoplastic resin for the curved part body that contacts at least one
The endoscope according to item (1), wherein: (7) At least one of the distal end portion and the proximal end portion of the outer cover member
Characterized in that a convex part is formed on the curved part body that contacts
The endoscope according to item (1). (8) At least one of the distal end portion and the proximal end portion of the outer cover member
Is characterized by being constituted separately from the outer cover member
The endoscope according to (1). (9) The distal end and the proximal end which are formed separately from the outer skin member
The part is connected and fixed with at least one of a thread or an adhesive
The endoscope according to item (1), comprising: (10) The skin member is an extensible polymer material
The endoscope according to item (1), which comprises: (11) The distal end formed separately from the outer skin member is
A feature characterized in that the end of the endoscope is configured to be exterior.
The endoscope according to (1). (12) The tip portion formed separately from the outer skin member is
It is characterized by being constituted by elastomer having elasticity
Item (1). (13) The tip portion formed separately from the outer skin member,
Nozzle member for air / water supply to objective lens surface, objective
At least one of the lens, illumination lens, etc. is fixed
The endoscope according to item (1), wherein: (14) The distal end configured separately from the outer skin member,
Check that the convex member is provided on the surface that contacts the endoscope tip.
The endoscope according to item (1), which is characterized by the following. (15) It is constituted separately from the outer skin member.
At the distal end of the endoscope that comes into contact with the projection provided at the distal end,
Item (1) is characterized in that a notch is provided.
Endoscope. (16) Insertion section and bending section main body provided in part of insertion section
And an endoscope having an insertion portion made of an electric heating body.
An endoscope provided with a heating device. (17) The heating device is provided over the entire length of the insertion section.
The endoscope according to item (16), which is characterized in that: (18) The heating device is made of a thermoplastic resin forming the insertion portion.
Endoscope according to item (16), which is arranged on the inner side.
mirror. (19) characterized in that a temperature measuring device is provided in the insertion portion.
  The endoscope according to item (16). (20) The temperature measuring device is a thermoplastic resin constituting the insertion portion
Endoscope according to item (16), wherein a plurality of pieces are arranged in
mirror. (21) The heat generating device is approximately equal to the human body temperature.
As described in item (16), the temperature was set at 37 ° C.
Endoscope. (22) The heating device was measured by the temperature measuring device
If the temperature exceeds 37 ° C, it will be detected by multiple temperature measuring devices.
So that it is set to the highest temperature
The endoscope according to item (16), wherein the endoscope is controlled. (23) The heating device is controlled not to exceed a maximum of 40 ° C.
The endoscope according to Item (16), wherein the endoscope is operated. [Problems of (16) to (23)] When inserting an endoscope into a body cavity,
If there is a difference in temperature between the body cavity and the endoscope insertion section, peristalsis of the body cavity
This causes movement and significantly reduces the endoscope's insertability.
Also, when cleaning the objective lens by sending water through the water pipe
The cold water to the heated tip in the body cavity
Dew condensation occurs on the objective lens, hindering the endoscope observation field of view.
As a countermeasure for this, send hot water
Of the endoscope
Can be Therefore, in paragraphs (16) to (23), the insertability into the body is
An endoscope that can be improved and always keep the viewing field clear
The purpose is to provide. [0061] As described above, the endoscope according to the present invention can be used.
According to the report, the outer shell can be easilybig
With a fixed strengthCan be fixed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall view of an endoscope. FIG. 2 is a sectional view of a bending portion according to the first embodiment of the present invention. FIG. 3 is a sectional view of a flexible tube section according to the first embodiment of the present invention. FIG. 4 is a schematic view showing a method of fixing a skin member of a bending portion. FIG. 5 is a sectional view of a bending portion according to a second embodiment of the present invention. FIG. 6 is an external view of a skin member according to a third embodiment of the present invention. FIG. 7 is a sectional view of a bending portion according to a third embodiment of the present invention. FIG. 8 is a sectional view of a bending portion according to a fourth embodiment of the present invention. FIG. 9 is an enlarged sectional view of a distal end portion according to a fourth embodiment of the present invention. FIG. 10 is an external view of a skin member according to a fifth embodiment of the present invention. FIG. 11 is a sectional view of a bending portion according to a fifth embodiment of the present invention. FIG. 12 is a configuration diagram of a conduit inside the endoscope. FIG. 13 is a sectional view of a flexible tube section according to a sixth embodiment of the present invention. FIG. 14 is a schematic perspective view of the flexible tube section of FIG. FIG. 15 is a partial cross-sectional view showing details of a flexible tube part of FIG. 13; FIG. 16 is a system diagram according to a sixth embodiment of the present invention; FIG. 17 is an operation explanatory view according to a sixth embodiment of the present invention. FIG. 18 is an operation explanatory view according to a sixth embodiment of the present invention. FIG. 19 is a sectional view of a conventional endoscope bending portion. [Description of Signs] 1 endoscope 3 insertion section 3a flexible tube section 3b bending section 3c distal end configuration section 18 outer skin member 24 adhered section (fixed section)

Claims (1)

(57) [Claim 1] An insertion portion comprising a flexible tube portion, a bending portion connected to a distal end of the flexible tube portion, and a distal end component portion connected to a distal end of the bending portion. has, in the endoscope formed of a fixed both end portions of the outer skin member forming the outer skin of the bending portion to a proximal end of the tip and the distal end construction part of each flexible tube portion, the flexible tube portion Between the distal end of the tip and the proximal end of the distal end component.
At least one is an outer peripheral surface on which the end of the outer cover member is overlapped.
Has the outer peripheral surface has a protrusion, and the end portion of the outer skin member to be overlaid on the outer peripheral surface, the accessibility
The outer peripheral surface of the flexible tube portion or the distal end component portion is provided.
Part as a fixed part made of thermoplastic resin.
And fixing the fixing portion to the outer skin member by fusing.
The end is the outer periphery of the flexible tube portion or the tip component.
An endoscope fixed to a surface .