JPH02191425A - Endoscope - Google Patents

Abstract

PURPOSE:To enhance the repairing and replacement properties of a cable protective tube by integrally covering a solid-state imaging apparatus and at least the part in the curving part of a signal cable. CONSTITUTION:When the curving operation of a curving part 9 is performed, the advance/retraction of a heat shrinkable tube 39 is generated. Since the rear end part of the heat shrinkable tube 39 is made long on the rearward side of a flexible tube cap 41, the heat shrinkable tube 39 protects a signal cable 28 without being hooked with the front end part of the flexible tube cap 41. When the heat shrinkable tube 39 is replaced, said tube 39 is cut by an edge tool to be peeled off from the signal cable 28 and the new heat shrinkable tube 39 is inserted in an imaging apparatus 22 from the front thereof to cover the signal cable 28 and a shield member 29 and shrunk by heating. As a result, the heat shrinkable tube 39 is closely adhered to the shield member 29 and deformed so that a gap is provided between the heat shrinkable tube 39 and the signal cable 28. By this method, replacement work can be shortened and flexibility can be improved.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an endoscope having a solid-state rotating device.

[Prior art and problems to be solved by the invention] In recent years, endoscopes (endoscopes) that can cool and examine internal organs in body cavities by inserting their elongated insertion parts into body cavities have been developed.
scope or fiberscope) are widely used. In addition, it is used not only for medical purposes but also for industrial purposes, such as indoors such as boilers, machinery, chemical plants, etc., or for inspecting objects such as equipment. Furthermore,
Charge-coupled water (COD) snow solid-state lId image element d64
Various types of electronic software are used for this purpose.

Generally, the solid-state image carrier is integrally formed with a circuit board, electronic components, a plurality of (iH''j couples, etc.) as an eye image device.

The above-mentioned ID image device (CTa is covered with a metal with good conductivity, that is, a silt part, to prevent disturbance noise from getting onto the signal couple, and this shield part side is connected to the rear end of the device). It is fixed to a plurality of signal couples via Kenol fixing members.

Furthermore, this shield member is covered with a metal tip component main body, an insulating part that is in contact with the bending joint piece, and generally a heat-shrinkable dupe.

On the other hand, the plurality of signal couples are twisted across the endoscope and bundled together to prevent damage caused by interference with other internal components. The cable retaining tube is coated. The tip of this cable protection tube (together with the L signal cable) is tied to the cable routing member with a thread and fixed by applying adhesive.

However, since @statues and edicts are expensive, they are required to be repairable and replaceable. In addition, the couple protection tube was also damaged due to damage and abrasion from other built-in items, and the cable protection tube was damaged. Increased number of L use cases11. It is necessary to repair and replace it to lower the L. When replacing this cable protection hoop, the adhesive on the beam-sol fixing member must be peeled off and the threads must be cut. Furthermore, remove the cable connected to the connector of the universal
Move the 2nd Gobu Cove to the back 1). In addition, when reinstalling the cable protection pipe 1, attach the coupler protection M7-1 from the end of the cable that has been removed from the connector. - Insert the disc.

However, there is a problem in that this replacement work has a high possibility of damaging the cable, and the replacement work requires a long time.

The purpose of this invention was to provide an endoscope with an improved cable protection tube and improved replaceability.

[Means and effects for solving the problem] Among the present invention? +
Mirror A is provided with a heat-shrinkable tube that integrally covers the solid-state imaging device and at least six curved portions of the signal cable.

In the present invention, the heat-shrinkable tube covers the solid-state imaging device for insulation, and covers the signal cable to protect the signal cable.

[Example] Hereinafter, the present invention will be described in detail with reference to the drawings.

Fig. 1 (, 2 to 51 are related to the first embodiment of the present invention, Fig. 1 is an explanatory diagram of the end of the chain, Fig. 2 G is an explanatory diagram of the endoscope device, and Fig. 3 is an explanatory diagram of the endoscope device. The figure is a sectional view taken in the direction of △-A = /'J in Figure 1. Figure 4 is an explanatory diagram of the connecting part between the curved part and the illumination part. Figure 5 is an explanation of another endoscope tip. It is a diagram.

In FIG. 2, an endoscope system ft11 controls an endoscope 2, a light source unit that supplies illumination light to the endoscope 2, and an endoscope 2.
+1-J signal 13 control unit (-+1' control device 3
It is composed of a display unit 4 that displays endoscopic images.
There is.

The endoscope 2 has an elongated insertion section 6.
An operating section 7 is connected to the rear of the machine. In the matchmaker part 6, the tip part 8, the curved part 9, and the flexible tube part 11 are installed in order from the tip side.
It is being In addition, the 1:L curved part 9 is attached to the operating part 7,
A curved ladle knob 12 is provided which is curved in the F-lower direction (i-4-+). Part 1.i
The L'J S'), the light 11i, and the J connector 14 are connected to the control device 3, in which the L'JS'), light 11i, and J connector 14 are installed.

As shown in FIG. A hole 18 and a hole 19 for air/water supply are provided.Furthermore, a tip cover 21 is fitted onto the tip of the tip component main body 16.

A unitized image carrier 22 is fixed in the observation hole 17. This image carrier 22 has a lens frame 2 on the distal end side of which a lens system 23 is positioned and fixed.
/l and 61. of this objective lens system 23. A solid-state image carrier 26 installed at the image position, an electronic component 27 that inputs and outputs electrical signals to and from this solid 11φ image probe 26, and this ``divination signal''
It is composed of a plurality of signal couples 2B for sending I'+, a shield part side 29, etc.

This image carrying device 22 will be further explained.

At the rear end of the lens frame 24, an lζth element frame 31 is fitted and fixed, and the solid-state imager 26 is fixed at an imaging position of 2 l. Yukijoki Ryo 26 is playing a role. An 11 connection terminal 32 is provided rearwardly protruding from the rear end surface of this solid body III image connection 26, and this connection terminal 32 is provided so as to face the solid body 11: image connection 26. is connected to. The electronic component 27 is mounted on this circuit board 33, and the core wire 37 of the signal triple 28 is further connected thereto.

The solid-state imaging system 26 and the circuit! The i% plate 33 and the element component 27 are covered by a shield portion 4A29 formed in a substantially cylindrical shape and made of conductive metal or the like and fitted onto the rear end of the element frame 31. In addition, the circuit! A part of the IT root 33, the electronic component 27, and a part of the core wire 37 are sealed to the sealing member 111 with un-).

The rear end portion of the shield portion 4429 is connected to the plurality of holes))
A turret fixing member 36 is fixed to which the turret 28 is -1. The shield wire 38 of the signal cable 28 fixed by this couple fixing part 4436 is connected to the shield member 2.
J, which is connected to 9, is turned. This number of ladle,
I l Guzol 28 tel twisted (1 G east twisted through insertion part 6 and operating part 7 and 1: bar 9 rule 13 ((
, J issue and ray: ``As shown in 911/, ^.

The cable frame 31, the shield member 29, and the Buddha S in the curved portion 9
′! The outside 17i1 of the i//- pull 28 is the signal cable 28
It is covered with a heat-shrinkable tube 39 that provides excellent air insulation.
The rear end of this heat-shrinkable sleeve 1-b39 is connected to the curved portion 9.
4) The front end of the 1-i1 flexible tube [] metal 41 that connects the 1-i1 pipe section 11 ends at the back of the culm nail. J-taple 2
8 or other built-in objects. This heat-shrinkable tube 39 is shrunk by applying heat, and comes into close contact with the element frame 31 and the outer peripheral wall of the shield portion +429. Furthermore, the minimum inner diameter of the heat-shrinkable tube 39 that has been heat-shrinked is larger than the outer diameter of the bundled 4a WJ couples 28;
There is a gap between. For example, this gap is on one side e
There is O, In+m culm 1qC.

An air and water nozzle 42 is installed in the front of the pre-delivery air and water supply hole 19.
is fitted and fixed inside C, and sprays cleaning water i (to clean the outer surface of the 9J object lens system 23.
An air/water supply tube 44 is connected to the rear part of the air/water supply hole 19 by a connection 43. This air and water supply tube 44 is inserted into the human part 6, the operation part 7 and the 11nibaryl cord 1 and 3.
+-3 and 14 for the light source.

A light guide 46 bundled with gold 45 is fitted and fixed in the front illumination hole 18, and a light distribution lens 47 is provided in the front 8 (1) of the light guide 46. (Iroh. The outer periphery of the guide 46G is covered by the first protection ring) - (Damn? 1) and there is a gap on the outer periphery (the second protection ring). -゛1-zo/
'I9 J,-,)'C'e! J' + I = J (4) 1 protective tube / I8 is inserted between the insertion section 6 and the operation section 7 - 1 - 1 - 1 - 1) - Guide 46
The second protective bevel 49 covers the outer periphery of the first protective bevel 48 in the curved portion 9, and the rear end of C1 is flexible. It ends on the curved part 9 side. Second protective crystal block: The rear end of L-zo 49 has a thickness of 0.
IIaIll Culm 1 For example, the metal thin-walled vibrator 51 is +X 1? This thin-walled vibrator 51 G,
[L'1
4 I'm awake.

+'+rf A curved portion 8 is provided at the rear end of the tip component main body 16.
The most distal joint piece 52a of the plurality of joint pieces 52 * 52 + . . . is externally fitted and fixed. This joint piece 52, 52. . . . is installed so as to be rotatable in various directions), so as to avoid bending the bending portion 8.

The curved portions 52, 52. ... is covered with a blade 56 made of braided thin metal wires, and this blade 56 is further covered with a curved part jacket 57. The distal end of the curved portion outer cover 57 is fixed to the distal end component main body 16 with an adhesive or the like after being wound with a thread.

The joint piece 52b located on the rear end side of the joint piece 52 is externally fitted and fixed to the flexible tube cap 41.Furthermore, the curved part outer cover 57 is attached to the flexible tube Afterward, it is fixed with a bonding agent or the like.A flexible tube external wave 58 constituting the flexible tube section 11 is fixed to the rear of the 5.1-inch tube base 41.

As shown in FIG.
1. Wire guide for guiding 1-bending operation 1-noirt 59:
The tip of the first coil 61 is fixed by brazing. The bending operation sheath A259 is inserted through the bending part 9 and fixed to the tip component main body 16, and is adapted to bend the bending part 9 by pulling and loosening the wire 59 with the bending operation knob 12.

This flexible tube [the cross-sectional shape is deformed in order to reduce the filling rate of the built-in objects LL inserted through the inside of the metal 41. For example, the pre-air and water supply tube 47'I is connected to the wire guide from the curved part 9 side of the flexible tube cap 41 to the position where it is flexible (= from the J part to the operating part 7 side and becomes flexible). Alternatively, the cross section between the other built-in parts is formed into a substantially triangular shape, and the second protection part I-
The vibrator 49 and the λ-threaded vibrator 51 are formed into a circular shape from the front end of the flexible tube base 41 to the curved portion 9 side and the terminal end.

The operation of the endoscope configured as above will be explained.

When the bending section 9 is bent, the heat shrinkable tube 39
Advances and retreats occur. This advance/retreat IIl is 15 at most.
It's about 20+1111 melons, but it's heat-shrinkable.

The rear part of the flexible tube 39 is extended by 3Qmm to the rear side of the flexible tube [1 metal 41].
To protect the signal couple 28 without getting caught on the front end of the signal coupler 28.

When the endoscope 2 is used more frequently and the heat-shrink tube 39 needs to be replaced, cut the heat-shrink tube 39 with a knife or the like, peel it off from the tube, and then replace it with a new heat-shrink tube. 39 into the front of the imaging device 22, cover the silt portion 4A29 with the transmission cable 28, and apply heat to avoid shrinkage.

As a result, the shield part 4429 is deformed so that the heat-shrinkable part 39 is closely watched and there is a gap between it and the signal cable 28.

In this embodiment, in order to insulate the shield part 4429 and protect the signal cable 28 using heat-shrinkable f-:J-b 39, it is necessary to individually fix the insulating member and the protection b-b as in the conventional method. In addition, the heat-shrinkable tube 39 can be attached by inserting the heat-shrinkable tube 39 into the unshrinkable heat-shrinkable tube 39 with the end of the heat-shrinkable tube 39. 1 Connected to connector 11, signal cable 2
Since there is no need to remove the part 8, the replacement work can be shortened.

Furthermore, when the bending portion 9 is bent, the rear end of the heat-shrinkable tube 39 is bent into a flexible tube [301 on the rear side of the metal 41].
Because it is extended by 11m, the signal cable 28 can be protected without being pulled against the front end of the flexible tube 41.
That is (゛saru).

In addition, the movement of the heat-shrinkable duplex 39 and the movement of the signal couple 28 occur 1J.
．． - Comparing the movement of the '739 and the signal couple 28, the signal couple 28 is larger, and when viewed relatively, the signal cable 28 moves back and forth inside the heat-shrinkable tube 39. Therefore, The heat-shrinkable duplex 39 and the signal couple 28 are tightly IHed, and the unflexible bamboo is inhibited.
The Rukoto. In this embodiment, the minimum inner diameter J of the heat-shrinkable boolean 139 and the outer diameter J of the signal couple 28 are made small to easily maintain the gap and provide good flexibility.

Furthermore, the heat-shrinkable tube 39 can be removed from the imaging device 22 and the signal cable 28 without damaging the signal cable 28, which is attached near the cable fixing part.

In addition, the air and water supply tube 44's ∆ pipe section gold/1
A connecting vibro 2 shown in FIG. It is formed equivalent to a substantially triangular shape with a shape Q.
The filling rate within 1 is reduced.

Incidentally, the signal horn puller 28 inserted through the flexible tube portion 11 may be shielded as shown in FIG. 15.

In the figure, the signal couple 28 inserted through the flexible tube section 11 is covered with a conductive general shield, for example, a metal mesh tube 76. Furthermore, this money 1/! The mesh pipe 76 is coated with an insulating Cytoget 77. This comprehensive shield can be applied to the entire length of the No. 41 to the operating part 7 11111 ("You can avoid the end. The part without the general shield is reinforced with heat-shrinkable team 39.

FIG. 6 is an explanatory diagram of the second embodiment of the present invention, in which the imaging device is made of heat-shrinkable material.

In this embodiment C, the front end of the heat-shrinkable dicove 6G is already formed outside the layer imaging device 22 (in the shape of ¥) and has a molded portion 67.
After fitting onto the U image carrier 22, the U image carrier 22 is shrunk by applying heat. In addition, the narrow diameter portion 6 connected to the rear of the molded portion 67
The inner diameter of the cable 8 is the twisted outer diameter of the signal cable 28, and there is a gap of 0.1 ml/1 liter on one side.This narrow diameter part 68 is not heated or contracted.

Other configurations and operations are similar to those of the first embodiment.

In this embodiment, since the molding part 67 is the only part to be avoided from heat shrinkage, the part to be heated is short and the work time can be further shortened.

FIG. 7 is a sectional view of the distal end portion of an endoscope according to a third embodiment of the present invention.

In this embodiment, a heat shrink f'lf knee is attached to the signal puller 28.
/ 71 in close contact. This heat shrinkage f′l
-171 has a minimum inner diameter after heat shrinkage that is smaller than the twisted outer diameter of the signal cable 28 compared to the heat shrinkable tube 39 described in the first embodiment. Therefore, when heat is applied after covering the shielding member 29 and the signal cable 28 with the heat-shrinkable tube 71, the heat-shrinkable dicove 71 comes into close contact with the shielding member 29 and the signal cable 28.

The other configurations are the same as in the first embodiment.

In this embodiment, the heat-shrinkable cable 71 can be removed and removed in a manner that does not put pressure on the signal cable 28, which is a cable lobe, near the cable fixing portion 4436.

Also, peel off the heat-shrinkable material ヾ-771 from the signal cable 28! In this case, it can be easily removed by, for example, using a single-edged razor to circumscribe the No. 11 cable 28 and scraping off the outer periphery of the heat-shrinkable Chicove 71 in the axial direction.

Furthermore, when removing the heat-shrinkable J-bu 71, the dancing image device is removed in the same way as in the first embodiment. 122 can be inserted through the heat-shrinkable tube 71 before shrinkage, and the signal pull 28 connected to the signal and light source 2'' connector 14 can be removed as in the past. Because there is no need for 5a7 work, I am crying over the 5a7 reduction of work.

“Effects of the Invention J As explained above, according to the present invention, a solid decoy device,
2) By integrally covering at least the inside of the curved part of the couple with heat-shrinkable tube, it is possible to immediately replace the You can avoid it.

[Brief explanation of the drawing]

FIGS. 1 to 5 relate to the first embodiment of the present invention.
Figure number is an explanatory diagram of the tip of the endoscope, Figure 2 is an explanatory diagram of the internal vL equipment, Figure 3 is a plan view of the same place as in Figure 1, Figure 4 is an explanatory diagram of the tip of the endoscope,
The figure is an explanatory diagram of the connection part between the curved part and the i'il'ha tube part, Fig. 5 is an explanatory diagram of another endoscope tip, and Fig. 6
, 1 relates to the second embodiment of the present invention, and is an explanatory diagram of the case where the image carrier is coated with a heat-shrinkable dicove. FIG. 7 relates to the third embodiment of the present invention, and is a sectional view of the tip of the endoscope. be. 2... Endoscope 8... Tip part 9... Curved part 11... Flexible tube part 22... Layer imaging device
26...Solid-state image sensor 28...Signal couple
29...Shield member 36...Ri-Pull fixing member 39...Heat-shrinkable material Figure 2, Figure 3, Figure 3! F-A' Fig. 4] 1 Procedure width correct or incorrect 1 (voluntary)

Claims (1)

[Scope of Claims] An endoscope in which a solid-state imaging device is provided at a distal end portion connected to a distal end side of a curved portion, and a signal cable leading to the solid-state imaging device is disposed, the solid-state imaging device and the signal An endoscope comprising a heat-shrinkable tube that integrally covers at least a portion of the cable within the curved portion.