JPS5926717A - Insertion part of industrial endoscope - Google Patents

Abstract

PURPOSE:To replace a damage-side jacket easily by fixing the jackets of a curved and a soft part to an insertion part separately, attachably and detachably. CONSTITUTION:The insertion part 11 consists of a tip part 12 and the flexible soft part 14 provided successively to the tip part 12 through the curved part 13. A hole in the axial direction of the insertion part 11 is formed at the upper side of a hard tip member 15 made of metal, etc., at the tip part 12, and objectives 16 and 16 are provided through a lens frame 17. The tip side of a light guide fiber 19 which projects illumination light forward from its tip surface through cover glass 18 is fixed to one of holes at two positions of the lower side of the tip member 15, and a part behind the fixation part is convered with a flexible tube member 21 and supplied with the illumination light from this side through the soft part 14.

Description

[Detailed Description of the Invention] Is the present invention an industrial Sendai? This invention relates to an insertion section of an industrial endoscope that has a protective outer cover that is detachable by dividing the curved section and the outer periphery of the flexible section of the insertion section of the J2 mirror.

In recent years, by inserting a long and thin insertion section into a body cavity, organs inside the body cavity can be observed.If necessary, in-vivo tissue can be collected using forceps inserted through the forceps channel to examine the affected area in detail. Medical endoscopes that can perform diagnosis and treatment are widely used. Also, in the industrial field, boilers are used for industrial purposes.

It is also used for maintenance purposes, such as observing the condition inside the pipes such as Chemical Plan 1, etc., or collecting and inspecting the deposits on the inner surface of the pipes.

There are two types of oriented endoscopes: flexible endoscopes that have a flexible insertion section and can be bent, and rigid endoscopes that have a rigid insertion section that is approximately linear.

In these endoscopes, when the insertion section is inserted, the illumination light supplied to the proximal side is transmitted to the object f on the distal end side of the insertion section.
An illumination optical system that emits illumination light to f1l+, and an observation optical system that forms an image of the object illuminated by the illumination optical system and can be observed from behind the eyepiece on the hand side.

'' - When the insertion section of an industrial endoscope is repeatedly inserted into and removed from a subject, the outer circumferential surface of the insertion section will be damaged or broken. It is protected by a mesh pipe (forming an outer covering).

In the industrial endoscope insertion section of the IC, the above-mentioned outer cover is made to be replaceable, as disclosed in IrJ 57 37322 @ Publication No. However, since the outer periphery of the curved part and the flexible part is covered with a single piece, for example, if only the outer periphery of the curved part is damaged, the entire outer cover must be replaced. The problem was that it was inefficient and expensive.

The present invention has been modified based on the above-mentioned points. The object of the present invention is to provide an industrial mirror insertion part that can be economically repaired by making it removable and attachable.

The present invention will be specifically described below with reference to the drawings.

Fig. 1 shows an embodiment of the present invention, and Fig. 2 shows the △ of Fig. 1.
-A' line sectional view is shown.

In these figures, an insertion section 11 in an endoscopic mirror for surgery according to an embodiment of the present invention is connected to a distal end section 12 and a curved section 13 interposed in the distal end section 12. 4111 (consisting of flexible parts 111 and 4111).

A hole is formed in the Qql+ direction of the insertion portion 11 on the upper side of the hard tip member 15 made of metal or the like, and an objective lens 16.16 is disposed through the lens frame 17. It is set up. In addition, the tip side of a light guide fiber 19, which transmits illumination light from its tip surface to the front through a cover glass 18, is fixed to one of the three holes on the lower side of the tip part shrine 15. The rear part is covered with a flexible part 21 so that illumination light is supplied from the proximal side via the flexible part 14.

The other hole on the lower side of the distal end member 15 is used, for example, as a channel 17 for inserting a treatment instrument.

The objective lens 16.
A highly flexible image guide fiber 22 is disposed as an image transmitting means so that its distal end surface is positioned just as the image is being moved. This image guide fiber 22 is housed in a flexible tube member 23 (with the side facing the operating section
: It is inserted through the contact +1f1! which is not shown in the figure. There is an observation optical system (1) that enables observation of the optical image formed by the objective lens 16, 16 from the long side of the lens 1.

The distal OMI side of the image guide fiber 22 is fitted and accommodated in the cylindrical part 24, and the distal end member 15
Fixed to the inner wall.

Said wide tip: (In the curved part 13 adjacent to the part 12, a large number of 18-annular joint pieces 26, 26..., 26 are rotatably arranged and connected in the direction of the insertion part 11, These Seki 11i
) pieces 26, 26. . . , 26 is designed to pull and loosen the proximal portion of the operating wire A 27.27, 27.27 inserted through the insertion portion 11 by operating the curved operating lever. It is formed into a curved J shape and a sea urchin shape.

Said joint piece 26.26. . . , 26 are housed in a (flexible) soft inner mesh pipe (blade) 28 in which thin wires made of metal or the like are braided into a mesh shape, and
1ti) Piece 26 has the tip O A' 15 ,
Cylindrical body 30 fixed with FI5 ring-shaped locking piece 29
It is fixed at the Uj end.

Nu, the above-mentioned JIA rear end Seki 1Φ piece 26 is a substantially fit-shaped insertion 7i11 which is formed in a step shape at the boundary between the curved part 13 and the flexible part 14, together with the silk separator 2B rear end, and the front end of the main body part 31 Fixed on the side.

Seki 1111 piece 26, 26. ...26? The outer periphery of the IH cloudy δ41 pipe 28 is further covered with a bendable part U33 that is sufficiently flexible, such as sea urchin rubber, and both ends of the di-coved part 33 are covered with a ring-shaped part U33. Part 44 maintains liquid tightness J: Sea urchin is pressed and fixed.

After the above (insertion part) water hole part 31 *: (1 part inner periphery (J,
, the mesh pipe 34 and σ the mesh pipe 34 as 10! The front end of the flexure 'Ff35 formed of resin etc.
．． 'T agent t (fixed at y, long on the inner periphery of the mesh planer 34) 19 (formed by spirally winding a long member)
A 1'δ (:8) convoluted tube 30 is inserted, and an image transmission image guide frame 22, a line 1 for illumination light transmission, a guide fiber '19, etc. are inserted inside this tube.

The outer periphery of the 1fA whistle 35 made of resin or the like is sealed with an outer assembly 37 of the sixth part. Covering the soft part 14: (The front end of the mesh pipe 37 is the tubular inner pipe 3B and the outside? (39 Both parts are compressed and clamped from the inside and outside, and caulked, solder, (silver) wax, etc.) are melted] &, m11
The agent is also fixed at 9 (the end of the mesh pipe 37 cannot be loosened by cutting it with one sword).
I itΔ110(U
is longer than the outer tube 39 and extends to the rear, and the outer tube 39
The mesh pipe 37 of the adjacent part is (outside) radial direction +, =, S, diagonal, and the outer diameter and flesh of this part j'j ('outer surface 39 outside 1-) - With the same diameter as t'I, insert the insertion part 11 and take it out.
・There is a stepped part on the inner periphery of the n-person location, and the outside 't12391
Even if part 158 comes into contact with step 7) 11, it will not be able to catch it.
J, it is formed like a sea urchin.

In addition, when fixing the mesh pipe 37 with the inner and outer pipes 38 and 39, for example, insert the inner pipe 38 inside the mesh pipe 37, and then pass the outer pipe 39 from the outside by reversing this order. b Good. ), even if the end of the mesh pipe 37 is loosened, it can be easily inserted directly between the inner and outer pipes 38 and 39. However, by caulking the outer tube 39 (this,
In this case, both the inner tube 38 or the inner and outer tubes 311 and 39 may be plastically worked.

)Pressure')r>Campling °C The net pipe 37 may be fixed and further fixed with adhesive or the like. ), and then cut the fixed thing to a predetermined degree, aligning it with 91) 1 part of the inner and outer tubes 38 and 39, or cutting both the inner and outer tubes 3B and 39.

''-3Ji, cover the end side of b formed as shown in the above-mentioned fixing part +A/10 with the base part of the 9111 side meat at). Fill the holes leading to the outer periphery of the tube 39 with adhesive or fix with solder.

It can be welded with silver solder, etc. In this way, the three outer tubes are covered with the metal f (1, +) cap, so the scratches from the caulking are covered by -11 and the appearance is improved. can,
.

The base of the fixed part 1340 fixed to the outer tube 39 is shorter than the base 39, and the outer circumferential side of the rear end of the base is shaved, so that the rear end is smoothly tapered and has a small diameter. I:
It is shaped so that there are no steps that can get caught. In addition, since the cap part is formed shorter than the outer casing 39, when the outer τr39 is glued and fixed with a half-OJ, etc., the half-I
I], silver solder etc. can be prevented from directly reaching the net pipe 37 side if it seeps out from the rear end of the mouthpiece, and it is also possible to prevent seepage from the end by 6゛IC rule Z' It is configured so that it can be confirmed whether the soldering U, etc. is sufficient (by checking). In addition, since the solder that has oozed out slightly covers the step at the rear end of the cap, there is less chance of it getting caught.

The inner peripheral side of the front end of the fixing part shrine/IO is for multiple engagements by the outer surface of multiple splines or relations formed on the outer periphery of the annular part 41 that is integrated with the main body part 31 by adhesive etc. An engaging portion 43 having internal teeth that engages with the uneven portion 42 is formed so as to fit into (the rear half of) the uneven portion 712 . Similarly, an engaging portion 44 formed by internal teeth that engages with (the front half of) the uneven portion 42 is formed on the inner periphery of the rear end.
8 The annular connecting member 45 is moved from the front as shown by arrow B (by moving due to membrane force, the uneven portion 42 and the engaging portion 44
The connecting member 45 rotates in the circumferential direction (
1111 to prevent rotation.

The above-mentioned engagement with the unevenness can be achieved by forming a large number of uneven portions 42 in the circumferential direction, and in the case of a single engagement means, it is necessary to twist the parts d3 in the circumferential direction for 1 m to fit together. 8°
Since it is possible to engage at any rotational position 1iff, the inconvenience of not being able to engage if twisted due to variations in machining accuracy is eliminated.

F to the annular group 144/11 with the uneven portion 42 provided on the outer periphery.
During J1, the annular part 46 that defines the outer diameter of the four parts of the uneven part 42 is fixed to the outer periphery of the main body part 31, and the side lights +,
(41, /I6, the outer periphery of the main body part 31 between them is formed with 14 parts 47 or recesses in the circumferential direction, and the grooves 47 have, for example, two (not two, but one) grooves, as shown in FIG. ) arc-shaped leaf spring 48.4
．． 8 is accommodated. These leaf springs48. /18)
Movement in the circumferential direction is restricted by a protrusion provided in the 14 portion 47.

These plate bones 48. /18 is always formed to the right of the biasing nozzle j which has a small radius of curvature according to the diameter of the outer periphery of the main body part 31, and when it is accommodated in the i1'11 part 47, both arc-shaped end sides are) 14 part/I7, a part of the arc-shaped medium flame protrudes radially outward and presses the four parts formed on the inner periphery of the connecting member 45, so that the connecting member 45 does not move in the axial direction of the insertion part 11. :H11 has been completed so as to be fixed to the sea urchin 1-1 or the shielding member 41). On the other hand, the connecting member 45
Holes 49, 49 are formed on the outer periphery of the portions where the leaf springs 48, 4B protrude from J31, respectively, and the leaf springs 11, 8, 11, 4B are inserted from outside of the holes 49, 49 with pins or the like. /
When 8 is pressed inward, the connecting member 45 is moved forward in the opposite direction to the arrow 3, and the 1 due to the unevenness is moved.
1> (uncoupled, King 1 Kubu Shrine 4 Basket 1, which engagement h7<
414 have been created so that it can be done.

In this way, even if there is a misalignment between the uneven portion 42 and the engaging portion 44 (overlapping in the circumferential direction), for example, even if there is a misalignment between the uneven portion 42 and the engaging portion 44, the positioning U in the equal circumferential direction can be achieved by using the engagement means using a plurality of (preferably a large number of) unevenness. -I almost need it! Therefore, the attachment 1112 can be formed so that it can be engaged freely. Therefore, it has the advantage that maintenance and handling are easy and there is no risk of In2 falling when using screws.

The inner periphery of the 1) 1'i end of the connecting member 45 has a notch formed therein, and a base portion of
As shown on the end side, a Chicove member 33 made of rubber or the like that covers the outer periphery of the curved portion 13 with the inner tube 51 and outer tube 52 is further added. I2! 1 piece for protection to cover [Hold the rear end of the tube 53 by 10 pieces and secure it with a piece of meat) 1 piece [Place 1 piece in each metal part and fix it with solder, solder, etc. .

In this case, the inner tube 51 is longer than the outer tube 52 and protrudes forward, and the outer tube 52 is fixed at its outer periphery.
40 thin-walled mouthpiece J, J that protrudes in the iI direction:
It's sea urchin.

The inner diameter of the inner pipe 51 is determined by the mesh pipe 28 fixed inside the inner pipe 51.
Rear end outer diameter J: Since the rear end is formed slightly tight to provide a gap, the plate spring 4ε3.I'+1'i. 114 so that the connecting member 45 can be moved forward in the direction opposite to the arrow B by pressing /18 inward, and can be disengaged from the spline or the like.

Therefore, inside information from the front end of the mesh pipe 53, 54 and outside'
A 55 is clamped and fixed, the front end side of the separated silk seal 53 is cut off, and the outer circumference of the outer tube 55 is fitted into the [J metal part of the annular or 1j11-shaped fixing part (the meat at the rear end of As2) 19. together,
Half 111. It is fixed with silver solder etc. This platform fixing member 56 has a protrusion formed at its front end that protrudes inward in the radial direction. be.

In this case, even if J5 is inserted, the inner tube 54 protrudes rearward from the outer casing 55, and the outer casing 55 is formed so as to protrude rearward than the thin base of the fixed portion 56, so that the insertion portion 11 is It is shaped so that it can be inserted smoothly.

A fixing ring 57 is provided on the outer periphery of the distal end portion 15 adjacent to the fixing portion 56, and has a male thread on the outer periphery on the front end side and a knurling on the outer periphery on the rear end side.
4 B11 formed on the front end surface of 7 and the tip ′+A15 outer periphery
A cutout (in the circumferential direction) that can be freely removed from the ring 58 is in contact with the fitted ring 58, and its position is regulated. A cylindrical cover member 591J2 that covers the front end side of the tip portion 12 on the screw
C: I decided to screw the 1111 screw formed on the inner circumference of a into the 1J part. Ii"tI-shaped cover part 59 can be removed or removed by unscrewing it. (14
has been completed. 6. The portion of the cylindrical cover 59 that faces the object for viewing the festival, the portion that faces the lighting window, etc., are each formed in the shape of an opening.

Remove the above-mentioned Jζ sea urchin I;]-shaped cover member 59,
If the ring 58 is roughly removed, the fixing ring 57 can no longer be removed. 1) Release the engagement means on the uneven surface as described in (2) above, and the fixed part 56 is attached to the outer cover that protects the outer periphery of the curved part 13, that is, the front end, and the fixed part 56 is attached to the rear end. The connecting member 45 can be removed by moving the pulled silk pipe 53 in the direction opposite to the arrow B, so that the mesh pipe 53 or its (!22 part, that is, the flexible part 14 The side jacket can be replaced.
Even if the outer sheath covering 4 is damaged, only that part can be replaced.

Further, the mesh pipe 53 covering the curved portion 13 and the mesh pipe 37 covering the flexible portion 14 can be formed to have different characteristics.

For example, by reducing the diameter of the water line of the mesh pipe 53 that covers the curved part 13,
By covering the wire thinly, it has good flexibility and is easy to bend, while on the flexible part 14 side, the diameter and thickness of the strands are increased to achieve durability of 1! It is formed so that I can be changed to a large J.

Not only the protective mesh pipe 53.37 but also the inner cove member 33. Flexible tube 35: b month.

(If you cover the technique differently, you can also form similar characteristics to the right, or roughly the inner mesh pipe 28.34
The same applies to

According to the embodiment made in this way, the curved portion 13
In the insertion portion main body 31 provided at the boundary with the flexible portion 14, the end portions of the mesh pipes 53 and 37 serving as outer coverings respectively cover the curved portion 13 and the flexible portion 14.
The connecting portion 0/15 and the fixed portion U 40 are formed so that they can be attached and removed freely.

Therefore, when the insertion part 11 is pushed into the insertion path such as inside a pipe for machining 1'S, the outer covering part of the curved part 13 or the outer covering part of the soft f'l part 14 may be damaged. If the sea urchin is separated, the outer covering part on the damaged side can be removed and replaced, and there is no need to replace the entire outer covering of the conventional J: sea urchin insertion section. Therefore, it is efficient and economical. In addition, by dividing the curved part 13 side and the soft part 14 side, the outer cover on the curved part 13 side is formed to have a high degree of softness (flexibility) that makes it easy to curve.
4 sides 1. J, by changing the flexibility (somewhat) to 1 to 1'U-, it is now possible to form a material that is incredibly strong and durable against external forces.
There is C.

In the above, for example, if the outer sheath of the curved section 13 is damaged, the operation of removing the outer sheath of the curved section 13 can be carried out as follows.
The fixing ring 57 can also be removed by rotating the cover member 59 and removing the ring 50 which extends through the notch by 11''LJ.

In this state, the plate springs/18, 48 in the groove 47 that fall into the engagement means which can be freely connected to the valley 1j (1j) formed on the outer periphery of the insertion part main body 31 are pressed inward, and the connecting part (Δ45
1) If you move it in the a direction, the engaging portion 44 that is connected to the connecting member 45 engaged with the engaging uneven portion lI2 of the annular portion 41 will be Ikfl IB2, so that the fixing member will be attached to the front end side. 56 is removed, and the connecting member 4'5 is removed from the insertion section 11 by moving the mesh tube 53 forward.

Therefore, the fixed part attached to J3 in boat 53 was removed.
6 and the outer pipe 55, and also loosen the fasteners 4':J between the connecting part 45 and the outer pipe 52, so that the damaged mesh pipe 53 can be replaced with a new one. It can be fixed in place by reversing the process.

If the flexible part 14 side is damaged, the curved part 1 will be damaged as described above.
3- After removing the mesh pipe 53 on the outer periphery, the mesh pipe 37 on the outer periphery of the flexible portion 14 can be removed and repaired in substantially the same manner.

In addition, in the above description, it is divided into the curved part 13 side and the flexible part 14^
71 is possible, but for example, the flexible part 1
4 may be roughly divided.

Also, wear 11 ((above as a means to freely divide) small J3
When the plate springs 48, 48 engage the unevenness,
Although it is shown that the parts are fixed by force, the present invention is not limited to this. For example, the parts to be divided can be fixed freely by screws.

In addition, by means of attachment/detachment/fixation means, a thread-like member is wound around the outer periphery of the end of the outer cover to fix it to a predetermined outer periphery of the insertion portion 11, and if necessary, a bonding agent is applied from the side. It can be fixed like this.

As mentioned above, according to the present invention, it is possible to separate the outer covering from the soft part such as the curved part. Since it is designed so that it can be fixed freely to the insertion part, if the outer sheath is damaged, the damaged outer sheath can be easily replaced.Also,
Since it is divided, the curved part is more like 1)? The advantage of using an outer cover that exhibits bending properties is that the durability of the flexible portion can be improved.

[Brief explanation of the drawing]

Figures 1 and 2 relate to the present invention, and Figure 1 shows an assembly of an industrial endoscope insertion section using an embodiment of the present invention.
2 is a plan view taken along the line Δ-A' of FIG. 1; FIG. DESCRIPTION OF SYMBOLS 11... Insertion part, 12... Tip part, 13... Curved part, 1/l... Soft 1η part, 31... Insertion part body part,
37.53...Net color, 38,51.54...Inner tube,
39,52゜J j...External answer, 40,56...Fixed part month, 41...Annular part shrine, /12...Irregular part, 43
．． /14...Engagement part, 45...Connection part shrine, /1G・
...hole, 47...) 14 parts, 718...plate 4a1
゜Procedural amendment (spontaneous) 20 Title of invention Insert part of industrial internal mirror 3, Relationship with the case of the person making the amendment 1ej Amendment applicant 5, Date of amendment order Voluntary 6, Increased by amendment Number of defenses 7, subject of amendment Detailed explanation of the invention for specification 1
, Lines 8 and 9 of page 7 of Ming #I include ``Spot welding, caulking, soldering, (silver) brazing, etc.''
” has been corrected to [re, gagishime, pole attachment, (silver brazing, spot welding, etc.).

Claims (3)

[Claims] (1) Is there a curved part or a flexible part directly facing the industrial interior? 32 Place a3 at the insertion part of the mirror, divide the di]-b-shaped outer casing at least at one curved part and the outer periphery of the flexible part, and divide it into η shield 1! The insertion part of an industrial endoscope, which is characterized by a flexible IJ. (2) Is the outer cover around the curved part, outside the outer periphery of the soft part? l
! ! J, Rimo possible)! The special feature is that it is formed to have a ′δ property [iil! 5th range 1st 'Ij'i
1111 human parts 1° of the industrial endoscope described (3) The above-mentioned outer sheath 11 is made by braiding fine wires of metal etc. into a net shape]
- The diameter of the narrow tit strands of the tube part (J3) on the outer periphery of the curved part (7J) is smaller than that of the outer periphery of the flexible part by 1-7. 1Φ entry part of the industrial endoscope described in item 1.