CN102033309B - Endoscope - Google Patents

Abstract

The invention provides an endoscope. The insertion part of the endoscope is provided with a front end part, a bent part, a flexible tube part, a flexible tube connecting component and a bent part connecting cover, wherein the front end part is provided with an optical unit; the bent part is provided with a bent block assembly coated by bent rubber and an insertion part outer coating protection tube for forming the outer coating of the bent block assembly; the flexible tube part is provided with a tube body and an insertion part outer coating protection tube for forming the outer coating of the tube body; the flexible tube connecting component is used for connecting the flexible tube part and the bent part; and the bent part connecting cover is used for connecting the bent part and the front end part. The insertion part outer coating protection tube is arranged on the insertion part by the following steps of: firstly, fixedly arranging the insertion part outer coating protection tube on the flexible tube connecting component; secondly, fixedly arranging the insertion part outer coating protection tube on the bent part connecting cover so that the insertion part outer coating protection tube is coated in a relaxed state relative to the bent resin; and finally, stroking the insertion part outer coating protection tube fixed on the flexible tube connecting component to the operation part from the front end of the flexible tube part.

Description

Endoscope

Technical field

The present invention relates to change the endoscope of insertion section outer covering layer protection tube, this insertion section outer covering layer protection tube is assembled in and forms the bend of insertion section and the most peripheral of flexible tubing portion.

Background technology

Endoscope is widely used at medical field and industrial circle.Endoscope is mainly made up of elongated insertion section and the operating portion that is arranged on the base end part of this insertion section.Endoscope is configured to: by elongated insertion section is inserted in pipeline, can carry out the observation in this pipeline.

About the endoscope using in industrial circle (following, also to describe as technoscope), insertion section be inserted in the pipe of such as boiler, chemical device etc. or rubble when the disaster such as engine interior or earthquake such as jet engine among.Therefore, because insertion section repeatedly plugs, so insertion section outside surface likely damages or breakage.Therefore, in technoscope, in order to prevent damage or the breakage of insertion section outside surface, formed the structure that is provided with outer covering layer webmaster at the most peripheral of insertion section, this outer covering layer webmaster is woven into the fine rule of metal etc. netted and forms.

Outer covering layer webmaster is for example made up of braid as described below, and this braid is that the tungsten line that is 0.2mm left and right to external diameter weaves the braid that is configured to circular tube shaped.Outer covering layer webmaster is coated being coated with the more lateral of flexible tubing portion of pitch tube and the more lateral that is coated with the bend of bending rubber, thus protection pitch tube and bending rubber.

But even be coated the insertion section of outer covering layer webmaster, the metal fine that forms the braid of outer covering layer webmaster also can be owing to repeatedly being ruptured to plugs such as engine interiors in this insertion section.Start at metal fine under the original state of fracture, the end of the metal fine of this fracture is in the difference state of direction toward the outer side.So, in the time that user will control insertion section, can produce the end of direction toward the outer side and stab the unfavorable condition of user's hand or finger.

In addition, in the time that the fracture of metal fine further develops, the braiding hole of braid becomes inhomogenous state from the state of homogeneous., braiding hole has been divided into sparse part, intensive part and normal part etc.In the time that the braiding hole of braid becomes intensive, the resistance that can produce while making bend bending becomes large unfavorable condition compared with original state.On the other hand, thinning when thin when the braiding hole of braid, be more positioned at the bending rubber of lower floor and the degree of exposing of pitch tube expands gradually than outer covering layer webmaster.And, because the degree of exposing of bending rubber etc. expands, so this bending rubber likely damages or damaged.Just in case bending rubber, pitch tube breakage in the situation that, need to carry out the repairing of endoscope.The repairing of endoscope requires a great deal of time and expense.

Summary of the invention

The object of the present invention is to provide a kind of endoscope; this endoscope has the insertion section outer covering layer protection tube that can change; in the time having there is unfavorable condition in the insertion section outer covering layer protection tube of the most peripheral of coated insertion section; by changing this insertion section outer covering layer protection tube, can prevent in advance bending rubber or the pitch tube damage or damaged of the lower floor that is positioned at this insertion section outer covering layer protection tube.

About endoscope of the present invention, there is the following part configuring successively from front in the insertion section of the endoscope extending out from the operating portion connecting pipe that is fixed on endoscopic procedure portion: leading section, it has optical unit; Bend, it has the curved block assembly that is bent rubber coated and the insertion section outer covering layer protection tube that forms the outer covering layer of this curved block assembly; Flexible tubing portion, it has the insertion section outer covering layer protection tube that is coated with the body of outer leather hose and forms the outer covering layer of this body at ribbon spiral pipe; Flexible tubing link, it is for connecting above-mentioned flexible tubing portion and above-mentioned bend; And bend connects cover, it is for connecting above-mentioned bend and above-mentioned leading section, above-mentioned insertion section outer covering layer protection tube is arranged on above-mentioned insertion section by following steps: above-mentioned insertion section outer covering layer protection tube is fixedly installed on above-mentioned flexible tubing link, then, above-mentioned insertion section outer covering layer protection tube is fixedly installed on to above-mentioned bend and connects cover above, make above-mentioned insertion section outer covering layer protection tube coated with the state relaxing with respect to above-mentioned bending rubber; Then, smooth out with the fingers to above-mentioned operating portion side from the front of above-mentioned flexible tubing portion being fixed on insertion section outer covering layer protection tube on above-mentioned flexible tubing link, adjust the tensioning situation of above-mentioned insertion section outer covering layer protection tube with respect to above-mentioned bending rubber; Finally, the base end part of above-mentioned insertion section outer covering layer protection tube is fixedly installed on aforesaid operations portion connecting pipe.

Object, feature and advantage above-mentioned and in addition of the present invention can more clearly be understood by accompanying drawing and explanation described later.

Brief description of the drawings

Fig. 1 is the figure that the structure of endoscope describes.

Fig. 2 is the figure that the structure of the extended insertion section of operating portion from endoscope is described.

Fig. 3 is the figure that the structure of the outer covering layer webmaster as insertion section outer covering layer protection tube is described.

Fig. 4 be to as unload one of step of outer covering layer webmaster, outer covering layer webmaster fixed part is unloaded to the figure describing from operating portion connecting pipe.

Fig. 5 is to as unloading figure one of step of outer covering layer webmaster, that excision wiring adhesive portion describes.

Fig. 6 to as unload one of step of outer covering layer webmaster, outer covering layer webmaster is taken out to the figure describing from insertion section.

Fig. 7 be the bend to the insertion section of having unloaded outer covering layer webmaster and near describe in, to as figure one of step of outer covering layer webmaster, that bending rubber end regions complete cycle is described by alcohol wipe is installed.

Fig. 8 is the figure that state one of step as installation outer covering layer webmaster, that transition part is positioned to precalculated position after outer covering layer webmaster is punctured into insertion section is described.

Fig. 9 is the figure to describing as the state of installing on cardinal extremity curved block fixed part one of step of outer covering layer webmaster, that the transition part wiring of outer covering layer webmaster is fixed on to flexible tubing link.

Figure 10 be to as install one of step of outer covering layer webmaster, by the webmaster portion of outer covering layer webmaster with respect to bending rubber loosely wiring be fixed on the figure that the state on the front end curved block fixed part that bend connects cover describes.

Thereby Figure 11 be to as install one of step of outer covering layer webmaster, on the connecting pipe taper surface that the dipping portion of outer covering layer webmaster is disposed to operating portion connecting pipe after, outer covering layer webmaster fixed part screwed togather to be fixed on operating portion connecting pipe, completed the figure that outer covering layer webmaster describes to the state of the installation of insertion section.

Figure 12 is to figure step, that excision wiring adhesive portion describes as unloading bending rubber.

In Figure 13 is curved block assembly coated on the metal webmaster exposing illustrating bending rubber to be removed, to as figure one of step of bending rubber, that bending rubber end configuring area complete cycle is described by alcohol wipe is installed.

Figure 14 is the figure describing to new bending rubber and for the bending rubber erecting tools of this bending rubber is installed.

Figure 15 be to as install bending rubber one of step, bending rubber is interted and is configured in the figure that the state on bending rubber erecting tools describes.

Thereby Figure 16 be to as install bending rubber one of step, by the end of the bending rubber figure that the state of bending rubber compact configuration on bending rubber erecting tools described that turns back.

Figure 17 be to as install bending rubber one of step, have the bending rubber erecting tools of bending rubber to be configured in the figure that the state on bend describes compact configuration.

Figure 18 is to being configured in as bending rubber coated one of step of bending rubber, by compact configuration on bending rubber erecting tools is installed the figure that the state in front end curved block and in cardinal extremity curved block describes.

Figure 19 be to as install bending rubber one of step, thereby the figure that state that wiring adhesive portion completed the replacing of bending rubber describes is set on the both ends of new bending rubber.

Figure 20 is to can in bend and flexible tubing portion, the figure that independently structure of the insertion section of insertion section outer covering layer protection tube describes being installed respectively, and Figure 20 is to being provided with bend outer covering layer webmaster and being provided with the figure that the insertion section of flexible tubing portion outer covering layer webmaster describes on bend in flexible tubing portion.

Figure 21 is arranged on by wiring fixed part the figure that the state on operating portion connecting pipe describes to the base end part of outer covering layer webmaster.

Figure 22 is the figure that the insertion section to outer covering layer webmaster as described below is installed describes, and above-mentioned outer covering layer webmaster is not to be fixed up by wiring adhesive portion, but is fixed up by multiple pipes.

Figure 23 is the figure that the variation of the pipe to fixing outer covering layer webmaster describes.

Figure 24 is the figure that the insertion section to the outer covering layer webmaster fixing by multiple C font pipes is installed describes.

Figure 25 is the figure that the structure of outer covering layer network management unit is described.

Figure 26 is the figure that the insertion section to outer covering layer network management unit is installed describes.

Figure 27 is to can in bend and flexible tubing portion, the figure that independently structure of the insertion section of insertion section outer covering layer protection tube describes being installed respectively, and Figure 27 is to being provided with bend outer covering layer webmaster and being provided with the figure that the insertion section of heat-shrinkable tube describes on bend in flexible tubing portion.

Figure 28 is the figure that the surperficial structure example to being arranged on the insertion section outer covering layer protection tube in flexible tubing portion describes.

Figure 29 is the figure that another the surperficial structure example to being arranged on the insertion section outer covering layer protection tube in flexible tubing portion describes.

Embodiment

Below, with reference to accompanying drawing, embodiments of the present invention are described.

As shown in Figure 1, endoscope 1 is mainly made up of insertion section 2, operating portion 3 and apparatus main body 4.On the leading section 6 that forms insertion section 2, be fixedly installed optical unit 5.In addition, also can on leading section 6, not be fixedly installed optical unit 5, and replace the structure of end adapter before before leading section handling are provided with direct viewing type freely end adapter or side-view type.

Insertion section 2 is inserted into as in the such as engine at object of observation position etc.Operating portion 3 connects the base end part that is arranged on insertion section 2.Operating portion 3 has handle part 3h, and operating portion 3 and apparatus main body 4 link together via Universal automatic cable 9.

In apparatus main body 4, there is the monitor 4m that shows endoscopic images.In the inside of apparatus main body 4, the pen recorder and the battery etc. that are built-in with camera control module, record processing image, above-mentioned camera control module carries out the signal processing of the aftermentioned imaging apparatus to being arranged at leading section 6.The electric power of battery is provided for is located at the light-emitting component of optical unit 5, monitor 4m and the camera control module etc. that apparatus main body 4 possesses.

In Universal automatic cable 9, be interspersed with the signal cable being connected with imaging apparatus and the cable that power supply is provided to the light-emitting component of optical unit 5 etc.

As shown in Figure 1 and Figure 2, insertion section 2 connects successively and following part is set and forms from front: the leading section 6 that is fixedly installed optical unit 5; Be configured to the bend 7 of for example left and right directions bending up and down; And there is flexible elongated flexible tubing portion 8.

Optical unit 5 mainly arranges adapter side objective lens optical system 11 and lamp optical system 12 and forms on adapter main body 10.Adapter side objective lens optical system 11 is configured in one or more optical lens 13 in single-element lens framework 14 and forms.Lamp optical system 12 is made up of device substrate 15 and Lighting Division 16, and this Lighting Division 16 has the light-emitting components such as not shown LED chip.One side side at device substrate 15 is provided with not shown conductive pattern, is equipped with multiple LED chips on this conductive pattern.LED chip is around single-element lens framework 14, be arranged with 8 apart from separating predetermined space on the circumference of insertion section central shaft preset distance.

On the conductive pattern of device substrate 15, be electrically connected with an end of the connecting pin 17 for electric power is provided to LED chip.One end of connecting pin 17 and LED chip are for example closed by sealing resin 18.

Label 19 is rotating masks, and this rotating mask 19 can freely rotate around the axle of adapter main body 10, on the inner peripheral surface of the base end side of this rotating mask 19, is provided with internal thread part.

Leading section 6 mainly arranges main body side objective lens optical system 21 and contact portion 22 and forms in leading section main body 20.Main body side objective lens optical system 21 has: one or more lens 23 are configured in one or more lens-mounts 24 and the imaging optical system 25 forming; And there is such as CCD(Charge Coupled Device: charge-coupled image sensor) or C-MOS(Complementary Metal Oxide Semiconductor complementary metal oxide semiconductor (CMOS)) etc. imaging apparatus 26 and the camera head 27 of substrate (not shown) for element.On camera head 27, be connected with extended signal cable 28 from apparatus main body 4.

Contact portion 22 is made up of portion of terminal 29 and cable 30.The other end of connecting pin 17 and portion of terminal 29 butt configurations.One end of cable 30 is for example electrically connected by scolding tin with portion of terminal 29.In the interspersed insertion section 2 of cable 30, in operating portion 3, in Universal automatic cable 9, and extend to for example apparatus main body 4.

In the periphery of leading section main body 20, one is fixed with fixing with cover 32, main part cover 33 and bend connection cover 34.Be formed with external thread part at the fixing leading section with cover 32.The internal thread part of rotating mask 19 screws togather configuration with the fixing external thread part with cover 32.In addition, rotating mask 19 and fixing with cover 32 by screwing togather under the state being installed together, utilize junction surface 35 guarantee water-stop by rotating mask 19 and be fixingly fixed into one with covering 32.

Main part cover 33 is connected cover 34 and is for example fixed into one by bonding agent screwing togather under state with bend.It is links that leading section 6 and bend 7 are coupled together that bend connects cover 34, and this bend connects cover 34 and has end difference, on the front end curved block fixed part 34a of this end difference, is fixedly installed integratedly the front end curved block 7f that forms bend 7.

Bend 7 is formed as curved block assembly 41, metal webmaster 42, bending rubber 43 and outer covering layer webmaster 44 sandwich construction and forms.Curved block assembly 41 by front end curved block 7f, cardinal extremity curved block 7e and rotate be connected to freely bent intermediate piece 7m1,7m2, the 7m(n-1 of the multiple kinds between this cardinal extremity curved block 7e and front end curved block 7f), 7mn(n is integer) formation.

Front end curved block 7f is fixed on bend and connects on the front end curved block fixed part 34a that covers 34.On the other hand, cardinal extremity curved block 7e is fixed on cardinal extremity curved block fixed part 55a, this cardinal extremity curved block fixed part 55a is the end difference of flexible tubing link 55, this flexible tubing link 55 forms the fore-end of flexible tubing portion 8, is the link for flexible tubing portion 8 and bend 7 are coupled together.

Metal webmaster 42 is for example the fine rule processed metals such as tungsten line, stainless steel wire to be woven into webmaster netted and that form, the periphery of these metal webmaster 42 coated curved block assemblies 41.Specifically, the leading section of metal webmaster 42 is coated is configured in front end curved block 7f above, and the base end part of metal webmaster 42 is coated is configured in cardinal extremity curved block 7e above, thus the roughly total length of metal webmaster 42 coated curved block assemblies 41.

Bending rubber 43 is to have flexible and rubber system or resinous tubular part retractility.The leading section of bending rubber 43 is to be coated on front end curved block 7f(coated by metal webmaster 42) on state under and be held in by wiring fixed part 91 is set under the state of front end curved block fixed part 34a that bend connects cover 34 water-stop and be fixed up integratedly.On the other hand, the base end part of bending rubber 43 is to be coated on cardinal extremity curved block 7e(coated by metal webmaster 42) on state under and be held in by wiring fixed part 92 is set under the state of cardinal extremity curved block fixed part 55a of flexible tubing link 55 water-stop and be fixed up integratedly.

Outer covering layer webmaster 44 is to be arranged on the insertion section outer covering layer protection tube on outer covering layer separately for the object of protection bend 7 and flexible tubing portion 8.As shown in Figure 3, outer covering layer webmaster 44 is made up of webmaster portion 45, dipping portion 46 and transition part 47.Webmaster portion 45 is woven into netted and is formed by metal fine rules processed such as such as tungsten lines.Dipping portion 46 is woven into netted and is formed by metal fine rule processed, and is that dipping forms to gain in strength as the fluororesin of object for improving the object of webmaster portion 45 intensity, in mesh.Transition part 47 is arranged between dipping portion 46 and webmaster portion 45, includes resin leaning in a part for dipping portion 46 sides of transition part 47.

The webmaster portion 45 of outer covering layer webmaster 44 configures in the mode of the outermost layer packaging of formation bend 7, and dipping portion 46 configures in the mode of the outermost layer packaging of formation flexible tubing portion 8., in the present embodiment, outer covering layer webmaster 44 has formed the outermost layer packaging of the bend 7 for forming insertion section 2 and the outermost layer packaging of flexible tubing portion 8.

The leading section that forms the webmaster portion 45 of outer covering layer webmaster 44 is provided with wiring and is adhesively fixed portion 93 as fixed part, thereby the pre-position on front end curved block 7f, the leading section of above-mentioned webmaster portion 45 and bend are connected to the front end curved block fixed part 34a one of cover 34 and firmly fix together with.

The transition part 47 of outer covering layer webmaster 44 is provided with wiring and is adhesively fixed portion 94 as fixed part, thereby the pre-position on cardinal extremity curved block 7e, by the cardinal extremity curved block fixed part 55a one of above-mentioned transition part 47 and flexible tubing link 55 and together with firmly fixing.

The base end part that forms the dipping portion 46 of outer covering layer webmaster 44 is configured on connecting pipe taper surface 56a; this connecting pipe taper surface 56a is the outer peripheral face that forms the operating portion connecting pipe 56 of the base end part of flexible tubing portion 8; the base end part of above-mentioned dipping portion 46 is pressed by the fixing taper surface 57a of the webmaster of outer covering layer webmaster fixed part 57 and is held fixingly, and this outer covering layer webmaster fixed part 57 is the outer covering layer protection tube fixed parts that are fixedly installed on this operating portion connecting pipe 56 by screwing togather.

In addition, on the reservations outer peripheral face of operating portion connecting pipe 56, be provided with external thread part, on the base end part inner peripheral surface of outer covering layer webmaster fixed part 57, be provided with internal thread part.

Flexible tubing portion 8 is formed as sandwich construction by the dipping portion 46 of the ribbon spiral pipe 51 of metalline, crust coated webmaster 52, outer leather hose 53 and outer covering layer webmaster 44 and forms.

Ribbon spiral pipe 51 by for example stainless steel, wall thickness for example for the strip-shaped members of the width dimension of 0.1mm is configured to the structure that spiral pipe forms.Outer leather hose 53 is the elastic bodys such as rubber components or urethane resin, and it has high ductibility, in order to keep water-stop, and the roughly total length from front end to cardinal extremity of these outer leather hose 53 coated ribbon spiral pipes 51.

The coated webmaster 52 of crust is the same with above-mentioned metal webmaster 42, for example, be woven into netted and formed by the metals such as tungsten line, stainless steel wire fine rule processed.The part from front end to cardinal extremity of the coated webmaster 52 coated ribbon spiral pipes 51 of crust.

Crust about the body 54 that is coated with the coated webmaster 52 of crust and outer leather hose 53 on ribbon spiral pipe 51 is coated webmaster 52, its leading section is configured in the band ladder recess of the inner peripheral surface that is formed at flexible tubing link 55, and with the coated webmaster fixed part 55b of front by bonding or firm welding and be fixed together integratedly.On the other hand, the base end part of the coated webmaster 52 of crust is configured in the band ladder recess of the inner peripheral surface that is formed at operating portion connecting pipe 56, and with the coated webmaster fixed part 56b of base end side by bonding or firm welding and be fixed together integratedly.

In addition, the leading section end face that forms the outer leather hose 53 of body 54 is configured in the recess that is formed at flexible tubing link 55, and is configured on front body fixed part 55c.On the other hand, the base end part end face of outer leather hose 53 is configured near of the front end face 56c of operating portion connecting pipe 56.

In addition, label 58 is to suppress ring, on the inner peripheral surface of this inhibition ring 58, is provided with internal thread part, and this internal thread part screws togather with the upper external thread part arranging of the 3a of front end protrusion portion that forms operating portion 3.In addition, operating portion connecting pipe 56 is being disposed under the state of the 3a of front end protrusion portion, the internal thread part of inhibition ring 58 and the external thread part of the 3a of front end protrusion portion are screwed togather, operating portion connecting pipe 56 is fixed up integratedly with operating portion 3 thus.

In addition, label 61 is bending operation lines, and label 62 is the interspersed coils of using of line.Line interts and is fixed on the inner peripheral surface of flexible tubing link 55 with the leading section of coil 62, and base end side is fixed on the precalculated position in operating portion 3.The leading section of bending operation line 61 is fixed on the precalculated position of front end curved block 7f, and base end side is punctured into line and interts interior with coil 62 and be fixed on the precalculated position in operating portion 3.

In addition, label 59 is heat-shrinkable tubes, and this heat-shrinkable tube 59 couples together the leading section of the base end part of outer leather hose 53 and operating portion connecting pipe 56 integratedly.

In the time that the insertion section 2 of the endoscope 1 forming as described above is repeatedly checked to the inner plug of jet engine of for example aircraft, the metal fine that forms outer covering layer webmaster 44 is cut off, and braiding hole density changes.In the time covering the braiding hole density of outer covering layer webmaster 44 of bend 7 and change, bending property likely produces unfavorable condition, and in the sparse part in braiding hole, the degree of exposing of bending rubber 43 increases, and having that protection is inadequate may.In addition, in flexible tubing portion 8, in the sparse part in braiding hole, the degree of exposing of outer leather hose 53 increases, and has the inadequate possibility of protection of outer leather hose 53.

Therefore, on the insertion section 2 of the endoscope 1 of present embodiment, when in the situation that the braiding hole density of the discovery outer covering layer webmasters 44 such as user has occurred to change, in order to prevent the unfavorable condition that the bending property of bend 7 is deteriorated or to be positioned at the bending rubber 43 of outer covering layer webmaster 44 lower floors or outer leather hose 53 damages or damaged unfavorable condition, requirement is changed, and thus injured outer covering layer webmaster 44 is replaced by new outer covering layer webmaster 44.

Herein, with reference to Fig. 4 to Figure 11, the exchonge step of outer covering layer webmaster 44 is described.

Operator carries out the replacing of outer covering layer webmaster 44 according to outer covering layer webmaster exchonge step.First operator dismantles the step of outer covering layer webmaster.

, operator carries out the be adhesively fixed excision of portion 93,94 of the dismounting of outer covering layer webmaster fixed part 57 and wiring.Specifically, operator will screw togather the outer covering layer webmaster fixed part 57 being fixed on operating portion connecting pipe 56 to predetermined direction rotation as shown in the dotted line in Fig. 4, so that this outer covering layer webmaster fixed part 57 moves to arrow Y4 direction, thereby this outer covering layer webmaster fixed part 57 is unloaded from operating portion connecting pipe 56.

And operator uses for example single-blade razor 71 into resecting tool as illustrated in fig. 5, to forming, wiring engages fixed part 93 and wiring engages the bonding agent removal of fixed part 94, and the rope parts of reeling are cut off and removed.

Then, for outer covering layer webmaster 44 is taken out from the front of insertion section 2, operator makes base end part forward end side shifting as shown in the arrow Y4 in Fig. 4 of outer covering layer webmaster 44, thereby as illustrated in fig. 6 outer covering layer webmaster 44 is unloaded from connecting pipe taper surface 56a.Then, operator keeps respectively the both ends of outer covering layer webmaster 44, the action that these both ends are compressed to close direction each other.So the braiding hole of outer covering layer webmaster 44 deforms, the internal diameter size of outer covering layer webmaster 44 expands into larger than the internal diameter size under installment state., between the inside surface of outer covering layer webmaster 44 and the bending rubber 43 of formation bend 7 and between the inside surface of outer covering layer webmaster 44 and the outer leather hose 53 of formation flexible tubing portion 8, producing gap.

Herein, operator, in keeping having produced as illustrated in fig. 6 the state in gap, makes outer covering layer webmaster 44 move and take out to the front of insertion section 2 as shown in arrow Y6.

In addition, by outer covering layer webmaster 44 is taken out from insertion section 2, as shown in Figure 7, become and form the bending rubber 43 of bend 7 of insertion section 2 and the outer leather hose 53(of flexible tubing portion 8 is not illustrated in FIG. at this) state that exposes.Herein, operator judges the deterioration state of bending rubber 43.

Operator carries out the replacing of outer covering layer webmaster 44 while not needing to change bending rubber 43 being judged as, and being judged as need to change bending rubber 43 time, is transferred to the bending rubber exchonge step shown in Figure 12 to Figure 19 described later.

Operator, being judged as while not needing to change bending rubber 43, is transferred to the step that outer covering layer webmaster is installed.Herein, in order to carry out the replacing of outer covering layer webmaster 44, operator utilizes for example alcohol to carry out wiping to the bending rubber end regions complete cycle shown in the arrow Y7 in Fig. 7.After wiping completes, operator inserts new outer covering layer webmaster 44 to insertion section 2.Now, operator inserts this outer covering layer webmaster 44 according to the order of the dipping portion of outer covering layer webmaster 44 46, transition part 47, webmaster portion 45 from optical unit 5 sides, and whether transition part 47 has been arrived to flexible tubing link 55 judges through braiding hole.

In the time that transition part 47 has arrived flexible tubing link 55, operator temporarily stops the insertion of outer covering layer webmaster 44.Then, carry out position alignment through the braiding hole of webmaster portion 45 in mode transition part 47 being configured in as shown in the arrow Y8 in Fig. 8 on the cardinal extremity curved block fixed part 55a of flexible tubing link 55.Then, after position alignment completes, be adhesively fixed in order to carry out wiring, operator is wound on the predetermined rope parts such as ケ Block ラ mono-(Kevlar: registered trademark) rope the periphery of transition part 47.

Its result is that transition part 47 is fixed on the cardinal extremity curved block fixed part 55a of flexible tubing link 55 by the wiring fixed part 95 being made up of rope parts.After fixedly the completing of transition part 47 of utilizing rope parts to realize, operator will more smooth out with the fingers forward end by the webmaster portion 45 of the front of insertion section 2 from transition part 47 sides than transition part 47.Then, operator makes the inner peripheral surface of the webmaster portion 45 that forms outer covering layer webmaster 44 temporarily become and the state of the outer peripheral face close contact of bending rubber 43 as illustrated in fig. 9.After this, operator is adjusted into most suitable state by webmaster portion 45 with respect to the tensioning situation of bending rubber 43., the generation in order to prevent that flexure operation from becoming the unfavorable conditions such as effort due to webmaster portion 45, to direction contrary to the above, operator moves adjustment from webmaster portion 45 to base end side, thus make webmaster portion 45 with respect to bending rubber 43 in predetermined relaxed state.

, operator adjusts the relaxation cases of webmaster portion 45, and the gap s of expection is set between the inner peripheral surface of webmaster portion 45 and the outer peripheral face of bending rubber 43.Then, the periphery of the webmaster portion 45 of operator on the front end curved block fixed part 34a that is disposed at bend connection cover 34 is reeled and is restricted parts and form wiring fixed part 95, thereby as illustrated in fig. 10 webmaster portion 45 is fixed on front end curved block fixed part 34a.

Operator completed utilize rope parts webmaster portion 45 is fixed on after front end curved block fixed part 34a, the ladder of file 99 being aimed to bend connection cover 34 as shown in the dotted line in Figure 10 is poor, the outer covering layer webmaster leading section 44a excision shown in the dotted line that portion's 93 forward end 6 sides that are adhesively fixed than wiring are stretched out.

Then, operator is coated with the bonding agent 96 of scheduled volume on the complete cycle of wiring portion 95 that is arranged at webmaster portion 45 two ends.Then, by making bonding agent 96 dry, thereby on the both ends of bend 7, form the wiring portion 93,94 that is adhesively fixed.

After this, operator uses not shown outside dimension confirmation gauge, and whether gauge is confirmed by the wiring portion 93,94 that is adhesively fixed swimmingly.

Then,, after confirming that gauge can pass through, operator will more lean on the dipping portion 46 of the formation outer covering layer webmaster 44 of operating portion 3 sides to smooth out with the fingers to operating portion 3 directions from transition part 47 sides than transition part 47.Then, as shown in figure 11, operator makes dipping portion 46 and outer leather hose 53 close contacts, and makes cardinal extremity sidepiece and the connecting pipe taper surface 56a close contact of dipping portion 46.Then, operator utilizes for example scissors that the dipping portion 46 of stretching out to operating portion 3 sides than the external thread part of operating portion connecting pipe 56 is excised.

After this, operator makes outer covering layer webmaster fixed part 57 through insertion section 2 and is configured on operating portion connecting pipe 56, and the internal thread part 57f of outer covering layer webmaster fixed part 57 and the external thread part 56m of operating portion connecting pipe 56 are screwed togather.Thus, be configured in the dipping portion 46 on the connecting pipe taper surface 56a of operating portion connecting pipe 56, gripped by the fixing taper surface 57a of webmaster and connecting pipe taper surface 56a.

Thus, the replacing end of job of outer covering layer webmaster 44.

Like this, forming coated outer covering layer webmaster 44 in the bend 7 of insertion section 2 and the outermost layer of flexible tubing portion 8 packaging.And, be configured to following structure: the leading section of the webmaster portion 45 that forms outer covering layer webmaster 44 is fixed on to bend and is connected on cover 34 by the wiring portion 93 that is adhesively fixed, the transition part 47 that forms outer covering layer webmaster 44 is fixed on flexible tubing link 55 by the wiring portion 94 that is adhesively fixed, and utilizes the fixing taper surface 57a of webmaster and connecting pipe taper surface 56a to grip the dipping portion 46 that forms outer covering layer webmaster 44.Thus, can easily change the outer covering layer webmaster 44 that forms insertion section 2, therefore, prevent that bending rubber 43, outer leather hose 53 from damaging or damaged unfavorable condition, can make the permanance of endoscope 1 improve.

In addition, when outer covering layer webmaster 44 has been taken out from insertion section 2 and in being judged as and need to changing bending rubber 43, operator carries out the replacing of bending rubber according to following steps, then, as described above new outer covering layer webmaster 44 is installed on insertion section 2.

With reference to Figure 12 to Figure 19, the exchonge step of bending rubber 43 is described.

Also, when needing bending rubber 43 to change, carry out the replacing of bending rubber 43 according to bending rubber exchonge step in the time that operator is judged as at replacing outer covering layer webmaster 44.

First, operator carries out the step that bending rubber is unloaded., for bending rubber 43 is unloaded from the bend 7 of insertion section 2, operator utilizes for example single-blade razor 71 to excise wiring fixed part 91,92 as illustrated in fig. 12, then, utilize for example single-blade razor 71 to put joint-cutting under at bending rubber 43, bending rubber 43 is removed from the curved block assembly 41 that is coated with metal webmaster 42.

So as shown in figure 13, the coated curved block assembly 41 of metal webmaster 42 that forms bend 7 exposes.At this, operator is transferred to the step that bending rubber is installed.

In the time carrying out the installation of bending rubber 43, operator carries out the maintenance of curved block assembly 41., in advance form each curved block 7f, the 7m1 of curved block assembly 41,7m2 ..., application of lubricating equably on 7e so that the flexure operation between each curved block carries out swimmingly.

Then, operator is transferred to the installation steps of bending rubber 43., operator utilizes for example alcohol to carry out wiping coating adhesive to the bending rubber end configuring area complete cycle shown in arrow Y13 curved block assembly 41, in Figure 13.

Then, operator is punctured into new bending rubber 43 in the through hole 81 of bending rubber erecting tools 80 as shown in Figure 14 and Figure 15.Then, as shown in figure 16, turned back to the outer circumferential side of bending rubber erecting tools 80 in each end that each end face from bending rubber erecting tools 80 of bending rubber 43 is outstanding.So bending rubber 43 compact configuration are on bending rubber erecting tools 80.Then, operator is application of lubricating on the inner peripheral surface 43a of bending rubber 43, and on the other hand, operator utilizes for example alcohol to carry out wiping to the return portion 43b of bending rubber 43.

Then, operator is configured in the bending rubber erecting tools 80 with bending rubber 43 on bend 7 as illustrated in fig. 17.Then, in Figure 18, make the return portion of bending rubber 43 divide coated being configured on the front end curved block 7f and cardinal extremity curved block 7e of curved block assembly 41, and bending rubber 43 is adhesively fixed.Then, operator takes out bending rubber erecting tools 80 from insertion section 2.Taking out after instrument, the surrounding of the coiling rope parts of operator to bending rubber 43 carries out wiping.

Then, operator carries out as illustrated in fig. 19 wiring and fixes.Then, by than wiring portion 97 forward distolateral expose by the unwanted part of the bending rubber 43 shown in dotted line and the unwanted part utilization by the bending rubber 43 shown in dotted line of exposing to base end side than wiring portion 97 respectively single-blade razor 71 shown by dashed lines excise.

Finally, operator utilizes for example alcohol to carry out wiping to wiring portion, and on wiring portion complete cycle coating adhesive.Then,, by making bonding agent dry, form wiring fixed part 91,92.

Herein, the bend 7 that bending rubber 43 is installed is carried out to leakage inspection, after having confirmed can not to leak, finish bending rubber and change operation.

In addition, in the above-described embodiment, formed in the structure that forms coated outer covering layer webmaster 44 in the bend 7 of insertion section 2 and the outermost layer of flexible tubing portion 8 packaging.But, also can independently insertion section outer covering layer protection tube be installed respectively in bend and flexible tubing portion and form insertion section.

With reference to Figure 20, the structure that has respectively bend outer covering layer webmaster 44A in the outermost layer packaging of bend 7, pack the insertion section 2A with the outer covering layer webmaster 44B of flexible tubing portion at the outermost layer of flexible tubing portion is described.

As shown in figure 20, the insertion section 2A of present embodiment is the same with above-mentioned insertion section 2, connects successively and following part is set and forms: the leading section 6 that is fixedly installed optical unit 5 from front; Be configured to the bend 7 of for example left and right directions bending up and down; And there is flexible elongated flexible tubing portion 8.The insertion section 2A of present embodiment has flexible tubing link 100 as the link that bend 7 is connected with flexible tubing portion 8.And, in the outermost layer packaging of bend 7, be coated with bend outer covering layer webmaster 44A, in the outermost layer packaging of flexible tubing portion 8, be coated with the outer covering layer webmaster 44B of flexible tubing portion.

Flexible tubing link 100 is made up of with outer covering layer webmaster fixed part 103 cardinal extremity curved block fixed part 101, the coated webmaster fixed part 102 of front and flexible tubing portion.Cardinal extremity curved block fixed part 101 is configured to identical with above-mentioned flexible tubing link 55, the coated webmaster fixed part 102 of front is configured to the coated webmaster fixed part 55b of above-mentioned front roughly the same, and flexible tubing portion is in order to form wiring described later be adhesively fixed portion 106 and the recess of formation with outer covering layer webmaster fixed part 103.

The bend of present embodiment is the structure being made up of the webmaster portion 45 of the outer covering layer webmaster 44 of above-mentioned the first embodiment with outer covering layer webmaster 44A, and flexible tubing portion is the structure being made up of the dipping portion 46 of outer covering layer webmaster 44 with outer covering layer webmaster 44B.

Leading section and base end part at bend with outer covering layer webmaster 44A, be formed with wiring fixed part 95, the wiring as fixed part consisting of coating adhesive 96 on the complete cycle at this wiring fixed part 95 portion 105 that is adhesively fixed, above-mentioned bend is fixed on respectively on front end curved block fixed part 34a and cardinal extremity curved block fixed part 101 with leading section and the base end part of outer covering layer webmaster 44A.In the present embodiment, bend is also considered the bending property of bend 7 and is configured to predetermined relaxed state with respect to bending rubber 43 with outer covering layer webmaster 44A.

On the other hand, leading section about flexible tubing portion with outer covering layer webmaster 44B, coated the crust of above-mentioned body 54 webmaster 52 firmly and is integratedly fixed on the coated webmaster fixed part 102 of front with ladder recess in and the leading section end face of outer leather hose 53 is configured near the cardinal extremity face 104 of flexible tubing link 100 after, utilize as the wiring of the fixed part portion 106 that is adhesively fixed the leading section of the above-mentioned flexible tubing outer covering layer webmaster 44B of portion be fixed on flexible tubing portion use outer covering layer webmaster fixed part 103.On the other hand, flexible tubing portion is the same with above-mentioned embodiment with the base end part of outer covering layer webmaster 44B, outer covering layer webmaster fixed part 57 is configured on operating portion connecting pipe 56, the internal thread part 57f of outer covering layer webmaster fixed part 57 and the external thread part 56m of operating portion connecting pipe 56 are screwed togather, thereby above-mentioned flexible tubing portion is gripped by the fixing taper surface 57a of webmaster and connecting pipe taper surface 56a with the base end part of outer covering layer webmaster 44B.

In addition, the be adhesively fixed structure of portion 105,106 of wiring is and the wiring identical structure of portion 93,94 that is adhesively fixed.In addition, in the present embodiment, bend with outer covering layer webmaster 44A to the installation of bend 7 can according to the order from base end part side to leading section side or in the past end side to the order of base end part side.In addition, utilize file 99 by the portion 105 that is adhesively fixed than the wiring bend outer covering layer webmaster 44A excision that forward end 6 sides or flexible tubing portion 8 sides are exposed respectively.The outer covering layer webmaster 44B of the flexible tubing portion excision that uses scissors or file 99 that the portion 106 that is adhesively fixed than wiring is exposed to bend 7 sides.Other structure of insertion section 2A is identical with the structure of above-mentioned insertion section 2, and same parts is marked with to same numeral, and also description thereof is omitted.

Like this, by the flexible tubing link 100 being made up of with outer covering layer webmaster fixed part 103 cardinal extremity curved block fixed part 101, the coated webmaster fixed part 102 of front and flexible tubing portion is set in the 2A of the insertion section of present embodiment, can in the outermost layer packaging of the outermost layer packaging of bend 7 and flexible tubing portion 8, special outer covering layer webmaster be set respectively.In other words, bend outer covering layer webmaster 44A independent and that can change and the outer covering layer webmaster 44B of flexible tubing portion can be set respectively in bend 7 and flexible tubing portion 8.Thus, can only change the coated bend outer covering layer webmaster 44A that holds vulnerable bend 7 most, become easier and cheap thereby change operation.

In addition, in the above-described embodiment, the base end part of outer covering layer webmaster 44,44B is being disposed under the state on operating portion connecting pipe 56, is screwing togather outer covering layer webmaster fixed part 57, thereby gripping the base end part of this outer covering layer webmaster 44,44B.But, as shown in figure 21, also can be by wiring fixed part 110 by outer covering layer webmaster 44,44B(in the drawings for label 44B) base end part 44e and the fixed part 56e of operating portion connecting pipe 56D be fixed up integratedly.

In addition, in the above-described embodiment, fixed part is made up of the wiring portion 93,94,105,106 that is adhesively fixed.But fixed part is not limited to the wiring portion that is adhesively fixed, and as shown in figure 22, the fixed part that fixes outer covering layer webmaster 44 also can be set form endoscope 2B by tube-like piece 111,112,113.

The first tube-like piece 111 is configured in the base end side of main part cover 33, for the leading section of the webmaster portion 45 that forms outer covering layer webmaster 44 is fixed.

The second tube-like piece 112 is configured on the heavy section 116 of flexible tubing link 115, is fixed for the transition part 47 to outer covering layer webmaster 44.Label 117 is tube-like piece locator protrusionss, and this tube-like piece locator protrusions 117 limits the allocation position of the second tube-like piece 112.

The 3rd tube-like piece 113 is configured on the protuberance 56g of operating portion connecting pipe 56F, is fixed for the base end part 44e to outer covering layer webmaster 44.

The internal diameter of the first tube-like piece 111 and the second tube-like piece 112 is larger than the external diameter of leading section 5.The internal diameter of the 3rd tube-like piece 113 is larger than the external diameter of the first tube-like piece 111 and the second tube-like piece 112, so that the 3rd tube-like piece 113 can pass through from the first tube-like piece 111 and the second tube-like piece 112 that are fixed on precalculated position.

Herein, the installation steps of tube-like piece 111,112,113 are described simply.

Operator is inserted into outer covering layer webmaster 44 insertion section 2 from optical unit 5 sides according to the order of dipping portion 46, transition part 47, webmaster portion 45.In the time that transition part 47 arrives flexible tubing link 115, operator temporarily stops the insertion of outer covering layer webmaster 44, and the line position of going forward side by side is aimed at so that transition part 47 is configured on the heavy section 116 of flexible tubing link 115.

After position alignment completes, the second tube-like piece 112 is inserted into coated disposing on the insertion section 2 of outer covering layer webmaster 44 by operator, and the second tube-like piece 112 is moved to the tube-like piece locator protrusions 117 of flexible tubing link 115.Then, position is regulated operator so that the cardinal extremity face of the second tube-like piece 112 and tube-like piece locator protrusions 117 butts, and after adjusting, coating adhesive is adhesively fixed.

Its result is that transition part 47 is fixed on the heavy section 116 of flexible tubing link 115 by the second tube-like piece 112.After utilizing the second tube-like piece 112 that transition part 47 is fixedly completed, operator will more lean on the webmaster portion 45 of the front of insertion section 2 to smooth out with the fingers forward end from transition part 47 sides than transition part 47.

Then, operator temporarily becomes and the state of the outer peripheral face close contact of bending rubber 43 inner peripheral surface of webmaster portion 45.After this, operator is adjusted into most suitable state by webmaster portion 45 with respect to the tensioning situation of bending rubber 43., operator make webmaster portion 45 with respect to bending rubber 43 in predetermined relaxed state.Now, the front of webmaster portion 45 is configured on main part cover 33.

At this, operator is inserted into the first tube-like piece 111 on insertion section 2, and the first tube-like piece 111 is moved to main part cover 33.Then, operator is configured in the first tube-like piece 111 in the precalculated position on the base end side of main part cover 33, and coating adhesive is adhesively fixed.Thus, the webmaster portion 45 being configured on the outer peripheral face of main part cover 33 is fixed up by the first tube-like piece 111.

After being fixed on and completing on main part cover 33 in webmaster portion 45, operator is by the outer covering layer webmaster leading section excision of stretching out than the first tube-like piece 111 forward end 6 sides.

Then, operator will more lean on the dipping portion 46 of the formation outer covering layer webmaster 44 of operating portion 3 sides to smooth out with the fingers to operating portion 3 directions from transition part 47 sides than transition part 47.Operator makes the outer peripheral face close contact of the protuberance 56g of dipping portion 46 and operating portion connecting pipe 56F.Then, operator utilizes for example scissors that the dipping portion 46 of stretching out to operating portion 3 sides than the end difference 56h of operating portion connecting pipe 56F is excised.

Then, operator is inserted into the 3rd tube-like piece 113 on insertion section 2, make the 3rd tube-like piece 113 from the first tube-like piece 111 and the second tube-like piece 112 by and to be configured in protuberance 56g upper, and coating adhesive is adhesively fixed.Thus, the dipping portion 46 being configured on the outer peripheral face of protuberance 56g of operating portion connecting pipe 56F is fixed up by the 3rd tube-like piece 113.

Thus, completed the installation of periphery webmaster 44.

Then,, in the time carrying out the replacing of outer covering layer webmaster 44, operator utilizes the not shown instrument such as grinding tool, cutter that tube-like piece 111,112,113 is cut off and removed from insertion section 2.After this, operator takes out outer covering layer webmaster 44 according to step same as described above from insertion section 2, and new outer covering layer webmaster 44 is installed.

Like this, thereby by being adhesively fixed and forming fixed part at configuration tube-like piece 111,112,113 rear coating adhesives, can strengthen constant intensity, thereby and can save wiring operation and improve operating efficiency.Other effect is identical with above-mentioned embodiment.

In addition, in the above-described embodiment, fixed part is made up of tube-like piece 111,112,113, but in the present embodiment, uses the C font tube-like piece 121,122,123 as illustrated in fig. 23 with notch 124 to replace tube-like piece 111,112,113.And, as shown in figure 24, C font tube-like piece 121,122,123 is disposed on insertion section 2, thereby is formed in precalculated position and is fixed with the endoscope 2C of outer covering layer webmaster 44.

The one C font tube-like piece 121 is configured in the outer circumferential side of the heavy section 7fa1 of front end curved block 7fa, for the leading section of the webmaster portion 45 that forms outer covering layer webmaster 44 is fixed.

The 2nd C font tube-like piece 122 is configured in the recess 126 of flexible tubing link 125, is fixed for the transition part 47 to outer covering layer webmaster 44.

The 3rd C font tube-like piece 123 is configured on the protuberance 56k of operating portion connecting pipe 56J, is fixed for the base end part 44e to outer covering layer webmaster 44.

As long as, C font tube-like piece 121,122,123 meets internal diameter size relationship larger than the external diameter of leading section 5 under the state expanding of C font tube-like piece.

At this, the installation steps of C font tube-like piece 121,122,123 are described simply.

Operator is inserted into outer covering layer webmaster 44 insertion section 2 from optical unit 5 sides according to the order of dipping portion 46, transition part 47, webmaster portion 45.In the time that transition part 47 arrives flexible tubing link 125, operator temporarily stops the insertion of outer covering layer webmaster 44, and the line position of going forward side by side is aimed at so that transition part 47 is configured on the recess 126 of flexible tubing link 125.

After position alignment completes, the 2nd C font tube-like piece 122 is inserted into coated disposing on the insertion section 2 of outer covering layer webmaster 44 by operator, and the 2nd C font tube-like piece 122 is moved to the recess 126 of flexible tubing link 125.Then, operator is configured in the 2nd C font tube-like piece 122 on recess 126, and the 2nd C font tube-like piece 122 is out of shape to the mode of internal diameter direction conquassation the 2nd C font tube-like piece 122, after this, coating adhesive is adhesively fixed.

Its result is that transition part 47 is being accommodated under the state in recess 126 and is being fixed up by the 2nd C font tube-like piece 122 together with the 2nd C font tube-like piece 122.Utilizing the 2nd C font tube-like piece 122 to complete after fixing of transition part 47, operator will more lean on the webmaster portion 45 of the front of insertion section 2 to smooth out with the fingers forward end from transition part 47 sides than transition part 47.

Then, operator temporarily becomes and the state of the outer peripheral face close contact of bending rubber 43 inner peripheral surface of webmaster portion 45.After this, operator is adjusted into most suitable state by webmaster portion 45 with respect to the tensioning situation of bending rubber 43., operator make webmaster portion 45 with respect to bending rubber 43 in predetermined relaxed state.Now, the front of webmaster portion 45 is configured on the heavy section 7fa1 of front end curved block 7fa.

At this, operator is inserted into a C font tube-like piece 121 on insertion section 2, and a C font tube-like piece 121 is moved to heavy section 7fa1.Then, operator is configured in a C font tube-like piece 121 in the precalculated position of heavy section 7fa1, and with above-mentioned similarly a C font tube-like piece 121 is out of shape the mode of C font tube-like piece 121 conquassation, after this, coating adhesive is adhesively fixed.Thus, the webmaster portion 45 being configured on the outer peripheral face of front end curved block 7fa is fixed up by a C font tube-like piece 121.

After completing and webmaster portion 45 being fixed on front end curved block 7fa, operator is by the outer covering layer webmaster leading section excision of stretching out than C font tube-like piece 121 forward end 6 sides.

Then, operator will more lean on the dipping portion 46 of the formation outer covering layer webmaster 44 of operating portion 3 sides to smooth out with the fingers to operating portion 3 directions from transition part 47 sides than transition part 47.Operator utilizes for example scissors that dipping portion 46 is excised, and makes the front end face butt of the protuberance 56k of dipping portion 46 and operating portion connecting pipe 56J.

Then, operator is inserted into the 3rd C font tube-like piece 123 on insertion section 2, the 3rd C font tube-like piece 123 is passed through from a C font tube-like piece 121 and the 2nd C font tube-like piece 122, and make the cardinal extremity face of this tube-like piece 123 and the front end face butt of protuberance 56k.Then, similarly the 3rd C font tube-like piece 123 is out of shape the mode of the 3rd C font tube-like piece 123 conquassation, after this, coating adhesive is adhesively fixed with above-mentioned.Thus, be configured in the dipping portion 46 on the front end face of protuberance 56k of operating portion connecting pipe 56J, be fixed up by the 3rd C font tube-like piece 123.

Thus, completed the installation of periphery webmaster 44.

Then,, in the time carrying out the replacing of outer covering layer webmaster 44, operator utilizes not shown instrument that C font tube-like piece 121,122,123 is cut off and removed from insertion section 2.After this, as described above outer covering layer webmaster 44 is taken out from insertion section 2, and new outer covering layer webmaster 44 is installed.

Like this, thus by configuration C font tube-like piece 121,122,123 rear to internal diameter direction by its conquassation and under this state coating adhesive be adhesively fixed and form fixed part, can make the diameter of fixed part reduce.Other effect is identical with above-mentioned embodiment.

The insertion section 2D of the endoscope 1 shown in Figure 25 and Figure 26 does not install outer covering layer webmaster 44,44B, and replace, outer covering layer network management unit 140 is installed.

As shown in figure 25, outer covering layer network management unit 140 is made up of front-end protection cover 141, outer covering layer webmaster 44, the first tube-like piece 131 and the second tube-like piece 112.Grade is coated protects by the rotating mask 19 that is disposed at insertion section leading section for front-end protection cover 141.The first tube-like piece 131 is configured on end difference 142, and this end difference 142 is formed in the base end part of front-end protection cover 141, and above-mentioned the first tube-like piece 131 is for being fixed the leading section of the webmaster portion 45 that forms outer covering layer webmaster 44.

At this, outer covering layer network management unit 140 is described.

Outer covering layer network management unit 140 is made according to following steps.

First, operator is from the front of outer covering layer webmaster 44, webmaster portion 45 sides are inserted the second tube-like piece 112 and the first tube-like piece 131 in advance.Then, operator is inserted into front-end protection cover 141 in the leading section of outer covering layer webmaster 44.

Then the arbor, die forging used interts in front-end protection cover 141 and arrives the predetermined position of outer covering layer webmaster 44.And operator carries out front-end protection cover 141 and the first tube-like piece 131 location with respect to outer covering layer webmaster 44., operator carries out position adjustment, and front-end protection cover 141 and the first tube-like piece 131 is configured in apart from the position of transition part 47 preset distances.

After position is adjusted, operator carries out die forging processing, this first tube-like piece 131 is out of shape to the mode of internal diameter direction conquassation the first tube-like piece 131.Thus, the first tube-like piece 131 is fixed on the end difference 142 of front-end protection cover 141, thereby front-end protection cover 141 is fixed on the precalculated position of webmaster portion 45 integratedly.

Complete after webmaster portion 45 forward end protective covers 141 fixing, operator by than the first tube-like piece 131 forward distolateral webmaster portion 45 of stretching out excise.Thus, outer covering layer network management unit 140 completes.In this outer covering layer network management unit 140, the second tube-like piece 112 is free state with respect to outer covering layer webmaster 44.

Next, the installation steps of outer covering layer network management unit 140 are described.

The outer covering layer webmaster 44 that operator has outer covering layer network management unit 140 is inserted into the 2D of insertion section from optical unit 5 sides according to the order of dipping portion 46, transition part 47, webmaster portion 45.In the time that transition part 47 arrives flexible tubing link 115, operator temporarily stops the insertion of outer covering layer webmaster 44, and the line position of going forward side by side is aimed at so that transition part 47 is configured on the heavy section 116 of flexible tubing link 115.

After position alignment completes, position is regulated operator so that cardinal extremity face and locator protrusions 117 butts of the second tube-like piece 112 that is free state with respect to outer covering layer webmaster 44, and after adjusting, coating adhesive is adhesively fixed.Its result is that transition part 47 is fixed on the heavy section 116 of flexible tubing link 115 by the second tube-like piece 112.

Then, operator carries out the position adjustment of front-end protection cover 141., operator carries out the location of front-end protection cover 141, so that webmaster portion 45 becomes predetermined relaxed state with respect to bending rubber 43.Behind location, operator's coating adhesive, is adhesively fixed on front-end protection cover 141 on rotating mask 19.

Then, operator will more lean on the dipping portion 46 of the formation outer covering layer webmaster 44 of operating portion 3 sides to smooth out with the fingers to operating portion 3 directions from transition part 47 sides than transition part 47.Operator is configured in dipping portion 46 on the outer peripheral face of protuberance 56g of operating portion connecting pipe 56F.

After this, operator inserts the 3rd tube-like piece 113 in the mode of crossing front-end protection cover 141, and the 3rd tube-like piece 113 is passed through from the first tube-like piece 131 and the second tube-like piece 112, and the cardinal extremity face of the 3rd tube-like piece 113 is configured on protuberance 56g.Then, similarly the 3rd tube-like piece 113 is adhesively fixed with above-mentioned.Thus, the dipping portion 46 being configured on the protuberance 56g of operating portion connecting pipe 56F is fixed up by the 3rd tube-like piece 113.The internal diameter of the 3rd tube-like piece 113 is set size as described below for: can and be configured on protuberance 56g through front-end protection cover 141.

Thus, completed the installation of outer covering layer network management unit 140.

In addition, in the time carrying out the replacing of outer covering layer network management unit 140, operator is cutting off and is removing on the basis of tube-like piece 131,112,113, utilizes not shown instrument front-end protection portion 141 is cut off and remove from insertion section 2D.By front-end protection cover 141 after insertion section 2D unloads, outer covering layer webmaster 44 is taken out as described above from insertion section 2D.After this, new outer covering layer network management unit 140 is installed and is formed insertion section 2D.

Like this, in the insertion section 2D that outer covering layer network management unit 140 is installed, can utilize front-end protection cover 141 prevent insertion section leading section in the time of mo(u)lding inspection etc. by shaggy scratches on metal surface or the unfavorable condition of pruning.Other effect is identical with above-mentioned embodiment.

In addition, in outer covering layer network management unit 140, also can replace the 3rd tube-like piece 113 with the 3rd C font tube-like piece 123, or replace the second tube-like piece 112 with the second C font tube-like piece 122.

With reference to Figure 27, the structure of insertion section 2E is described, this insertion section 2E possesses bend outer covering layer webmaster 44A in the outermost layer packaging of bend 7, and possesses as for example heat-shrinkable tube 48 with flexible body in the outermost layer packaging of flexible tubing portion.

As shown in figure 27, the insertion section 2E of present embodiment has the flexible tubing link 100A as the link of connecting bending pars convoluta 7 and flexible tubing portion 8.In addition, in the outermost layer packaging of bend 7, be coated with bend outer covering layer webmaster 44A, and be coated with heat-shrinkable tube 48 in the outermost layer packaging of flexible tubing portion 8, substitute the outer covering layer webmaster 44B of flexible tubing portion.

Flexible tubing link 100A is made up of cardinal extremity curved block fixed part 101, the coated webmaster fixed part 102 of front and heat-shrinkable tube fixed part 107.Heat-shrinkable tube fixed part 107 is dip plane, for the end of tight stationary heat collapsible tube 48.

Heat-shrinkable tube 48 is for example diameter dimension shrinkable body under the hot blast effect of dryer.The leading section of heat-shrinkable tube 48 is configured on heat-shrinkable tube fixed part 107, the base end part of heat-shrinkable tube 48 is configured on the heat-shrinkable tube configuration section 56m of operating portion connecting pipe 56L.Then, be disposed at blowing hot-air under the state of heat-shrinkable tube fixed part 107 and heat-shrinkable tube configuration section 56m at heat-shrinkable tube 48, thereby heat-shrinkable tube 48 shrinks to become one and is fixed on the state on heat-shrinkable tube fixed part 107 and heat-shrinkable tube configuration section 56m thus.

Like this, by utilizing heat-shrinkable tube 48 to form the outermost layer packaging of flexible tubing portion 8, can provide replacing operation to be more prone to and cheap insertion section.In addition, as having flexible body, being not limited to heat-shrinkable tube, can be also the body of fluorine type resin.This body is fixed in flexible tubing portion 8 by wiring fixed part, pipe or heat-shrinkable tube.

In addition, injured and when it is changed, utilize for example single-blade razor 71 on heat-shrinkable tube 48, to put joint-cutting under at heat-shrinkable tube 48, thus this heat-shrinkable tube 48 is removed from the body 54 that is coated with the coated webmaster 52 of crust.

In addition, also can for example in the outside surface side of heat-shrinkable tube 48A, spire 49a be set as shown in figure 28.Thus, can reduce the contact resistance between outside surface and the tested inner peripheral surface of having a medical check-up of heat-shrinkable tube 48A.

In addition, as shown in figure 29, also can spire 49a be set in the outside surface side of heat-shrinkable tube 48B, and replace, protuberance 49c be set, this protuberance 49c embeds metal system or resinous spheroid 49b and forms.Thus, can reduce the contact resistance between outside surface and the tested inner peripheral surface of having a medical check-up of heat-shrinkable tube 48B.

In addition, the present invention is not limited to the structure of above-mentioned embodiment, implementation phase, can be in the scope that does not depart from purport of the present invention be out of shape it is specialized structural elements.In addition, also can form various inventions by disclosed multiple structural elements in above-mentioned embodiment appropriately combined.For example, also can from all structural elements shown in embodiment, delete several structural elements.In addition, also can carry out appropriately combined to the structural elements in different embodiments.Like this, certainly, can in the scope that does not depart from inventive concept, carry out various distortion and application.

Claims (16)

1. an endoscope, is characterized in that,

Comprise from the insertion section of being fixed on the endoscope that the operating portion connecting pipe of endoscopic procedure portion extends out the following part configuring successively from front: leading section, it has optical unit; Bend, it has the curved block assembly that is bent rubber coated and the insertion section outer covering layer protection tube that forms the outer covering layer of this curved block assembly; Flexible tubing portion, it has the insertion section outer covering layer protection tube that is coated with the body of outer leather hose and forms the outer covering layer of this body at ribbon spiral pipe; Flexible tubing link, it is for connecting above-mentioned flexible tubing portion and above-mentioned bend; And bend connects cover, it is for connecting above-mentioned bend and above-mentioned leading section,

Above-mentioned insertion section outer covering layer protection tube is arranged on above-mentioned insertion section by following steps:

Above-mentioned insertion section outer covering layer protection tube is fixedly installed on above-mentioned flexible tubing link, then, above-mentioned insertion section outer covering layer protection tube is fixedly installed on to above-mentioned bend and connects cover above, make above-mentioned insertion section outer covering layer protection tube coated with the state relaxing with respect to above-mentioned bending rubber;

Then, smooth out with the fingers to above-mentioned operating portion side from the front of above-mentioned flexible tubing portion being fixed on insertion section outer covering layer protection tube on above-mentioned flexible tubing link, adjust the tensioning situation of above-mentioned insertion section outer covering layer protection tube with respect to above-mentioned bending rubber;

Finally, the base end part of above-mentioned insertion section outer covering layer protection tube is fixedly installed on aforesaid operations portion connecting pipe.

2. endoscope according to claim 1, is characterized in that,

The base end part of above-mentioned insertion section outer covering layer protection tube is fixedly installed on to step on aforesaid operations portion connecting pipe is performed such:

The base end part of above-mentioned insertion section outer covering layer protection tube is configured on the outer peripheral face of aforesaid operations portion connecting pipe; then the base end part that is configured in the above-mentioned insertion section outer covering layer protection tube on above-mentioned outer peripheral face is fixedly installed on to aforesaid operations portion connecting pipe, makes above-mentioned insertion section outer covering layer protection tube coated and be located at above-mentioned insertion section with the state of close contact with respect to the outer peripheral face of above-mentioned body.

3. endoscope according to claim 1, is characterized in that,

Above-mentioned insertion section outer covering layer protection tube is the outer covering layer webmaster being made up of webmaster portion, dipping portion and transition part; the outer covering layer of the coated above-mentioned bend of above-mentioned webmaster portion; the outer covering layer of the coated above-mentioned flexible tubing of above-mentioned dipping portion portion, above-mentioned transition part is arranged on the intersection of above-mentioned dipping portion and above-mentioned webmaster portion.

4. endoscope according to claim 3, is characterized in that,

Above-mentioned outer covering layer webmaster is assembled on above-mentioned insertion section by following steps:

Outer circumferential side by above-mentioned outer covering layer network management configuration in above-mentioned insertion section;

The transition part of above-mentioned outer covering layer webmaster is fixed on above-mentioned flexible tubing link;

The webmaster portion of above-mentioned outer covering layer webmaster is smoothed out with the fingers to above-mentioned leading section side and makes the temporary transient outer peripheral face close contact with above-mentioned bending rubber of the inner peripheral surface of this webmaster portion from the front of above-mentioned flexible tubing portion, make above-mentioned webmaster portion lax to adjust the tensioning situation with respect to above-mentioned bending rubber, then the leading section of above-mentioned webmaster portion is fixed on to above-mentioned bend and connects cover and go up and make above-mentioned outer covering layer webmaster to be coated with the state relaxing; And

The dipping portion of above-mentioned outer covering layer webmaster is smoothed out with the fingers to above-mentioned operating portion side and made the inner peripheral surface of this dipping portion and the outer peripheral face close contact of above-mentioned body from the base end side of above-mentioned bend, and the base end part of above-mentioned dipping portion is configured on the outer peripheral face of aforesaid operations portion connecting pipe, then be fixed, make above-mentioned dipping portion to be coated with the state of the outer peripheral face close contact of above-mentioned body.

5. endoscope according to claim 3, is characterized in that,

The fixed part of above-mentioned insertion section outer covering layer protection tube is be adhesively fixed portion or tube-like piece of wiring.

6. endoscope according to claim 4, is characterized in that,

The fixed part that the base end part of the dipping portion to above-mentioned outer covering layer webmaster is fixed is outer covering layer webmaster fixed part, about above-mentioned outer covering layer webmaster fixed part, this outer covering layer webmaster fixed part is installed on aforesaid operations portion connecting pipe by screwing togather, is held fixing thereby the base end part on the taper surface that is configured in this operating portion connecting pipe of dipping portion is pressed against on above-mentioned taper surface.

7. endoscope according to claim 1, is characterized in that,

Above-mentioned insertion section outer covering layer protection tube is to be provided for protecting the front-end protection cover of leading section and the outer covering layer network management unit that forms in the webmaster portion side of above-mentioned outer covering layer webmaster.

8. endoscope according to claim 1, is characterized in that,

Above-mentioned insertion section outer covering layer protection tube is made up of with outer covering layer webmaster and flexible tubing portion outer covering layer webmaster bend; above-mentioned bend is made up of the webmaster portion of the outer covering layer that is coated above-mentioned bend with outer covering layer webmaster, and above-mentioned flexible tubing portion is made up of the dipping portion of the outer covering layer that is coated above-mentioned flexible tubing portion with outer covering layer webmaster.

9. endoscope according to claim 8, is characterized in that,

Above-mentioned bend is loosely coated with respect to above-mentioned bending rubber by following steps with outer covering layer webmaster:

By fixed part, above-mentioned bend is fixed on to the bend of flexible tubing link with the base end part of outer covering layer webmaster with on fixed part; And

Above-mentioned bend is smoothed out with the fingers to above-mentioned leading section side and made the inner peripheral surface of this bend outer covering layer webmaster and the outer peripheral face close contact of above-mentioned bending rubber from the front of above-mentioned flexible tubing link with outer covering layer webmaster, make above-mentioned bend outer covering layer webmaster lax to adjust the tensioning situation with respect to above-mentioned bending rubber, then above-mentioned bend is fixed on to above-mentioned bend with the leading section of outer covering layer webmaster by fixed part and connects on cover.

10. endoscope according to claim 9, is characterized in that,

Be adhesively fixed portion or tube-like piece of wiring to above-mentioned bend with the fixed part that the end of outer covering layer webmaster is fixed respectively.

11. endoscopes according to claim 8, is characterized in that,

Above-mentioned flexible tubing portion is coated with respect to above-mentioned body by following steps in intimate contact with outer covering layer webmaster:

By fixed part, the flexible tubing portion that above-mentioned flexible tubing portion is fixed on to above-mentioned flexible tubing link with the leading section of outer covering layer webmaster is with on fixed part; And

Above-mentioned flexible tubing portion is smoothed out with the fingers to above-mentioned operating portion side and makes the inner peripheral surface of this flexible tubing portion outer covering layer webmaster and the outer peripheral face close contact of above-mentioned body from the base end side of above-mentioned flexible tubing link with outer covering layer webmaster, and the base end part of above-mentioned dipping portion is configured on the outer peripheral face of aforesaid operations portion connecting pipe, then by fixed part, above-mentioned base end part is fixed on aforesaid operations portion connecting pipe.

12. endoscopes according to claim 11, is characterized in that,

Be adhesively fixed portion, tube-like piece or outer covering layer webmaster fixed part of wiring to above-mentioned flexible tubing with the fixed part that the end of outer covering layer webmaster is fixed respectively.

13. endoscopes according to claim 12, is characterized in that,

Above-mentioned flexible tubing portion is removed from above-mentioned insertion section after the stationary state of having removed above-mentioned fixed part by following steps with outer covering layer webmaster:

The step that above-mentioned outer covering layer webmaster fixed part is unloaded;

By the step of the above-mentioned wiring portion of being adhesively fixed excision; And

The step that above-mentioned tube-like piece is removed.

14. endoscopes according to claim 1, is characterized in that,

Above-mentioned insertion section outer covering layer protection tube is made up of with outer covering layer webmaster and flexible pipe body bend, and above-mentioned bend is made up of the webmaster portion of the outer covering layer that is coated above-mentioned bend with outer covering layer webmaster, the outer covering layer of the coated above-mentioned flexible tubing of above-mentioned flexible pipe body.

15. endoscopes according to claim 14, is characterized in that,

Above-mentioned flexible pipe body is heat-shrinkable tube, has the spire for reducing contact resistance on the outside surface of this flexible pipe body.

16. endoscopes according to claim 14, is characterized in that,

Above-mentioned flexible pipe body is heat-shrinkable tube, has highlightedly the protuberance for reducing contact resistance from the outside surface of this flexible pipe body.