JPS60220031A - Endoscope - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an endoscope, and particularly to a treatment instrument guiding device 1 for an endoscope.

[Technical background of the invention and its problems]

As shown in Japanese Utility Model Publication No. 57-19127, the conventional treatment instrument guide device prevents the forceps elevator and the operating wire from being pulled out due to twisting at the connection between the forceps elevator and the operating wire. Therefore, I had the following configuration. In other words, a peripheral pressure screw? An operating wire was fixed to the center of the chopped screw body, and the screw body was screwed into a screw hole provided in a forceps elevator that was attached to the endoscope body so as to be rotatable nine times. However, with this configuration, it is true that the twist at the connection between the operating wire and the forceps elevator can be absorbed, but while the twist is absorbed and the screw body rotates relative to the forceps elevator trap, There was a risk that the screw body would come off from the screw hole.

It is extremely dangerous to insert something with such fatal defects into a patient's body cavity.

Also, as shown in Utility Model Publication No. 58-50884, 5K
, forceps elevator? The treatment tool n4 device has the following configuration so that cleaning and replacement can be easily performed by removing it. Was. That is, the forceps raising base is composed of a forceps raising base body and nine detachable auxiliary members, and a pivot pin is connected between the forceps raising base body and the auxiliary members. Uke supports;
It was possible to remove the forceps elevator stand alone without removing the pivot pin.

However, although the forceps elevator can be removed, the forceps elevator and the operating wire cannot be easily removed, making cleaning and replacement work complicated.

[Purpose of the invention]

Does this invention have the above-mentioned problems? This was done to eliminate twisting and disconnection at the connection between the treatment instrument inductor and the operating wire, ensuring durability and safety. Providing an extremely improved endoscopy 1tiv? purpose.

[Summary of the invention]

In this invention, a locking part is provided on the arm part protruding from the treatment instrument guide, an engaging part is provided on the end of the operating wire, and the operating wire is connected to the shaft of the operating wire. This is an endoscope in which an engaging portion and a locking portion are locked so as to be rotatable around a treatment instrument guide.

[Embodiments of the invention]

1 to 5 show a first embodiment of the present invention, in which an endoscope 1 includes a manual operating section 2. Insertion part 3. Tip part 4
．． Eyepiece 5. It consists of 6 universal codes. The hand operation unit 2 includes a bending operation knob 7, an air/water supply switching button 8. Suction button9. An inductor operating lever 10 and a treatment instrument insertion port 11 are provided. The distal end portion 4 has a treatment instrument protrusion 12. An observation window 13 and an illumination window 14 are provided. The treatment instrument outlet 12 is connected to the treatment instrument insertion port 11 through a channel 15 arranged inside the insertion section 30,
It is a trap so that a treatment instrument 16 or the like can be inserted therethrough. The treatment instrument outlet 12 serves as an opening to the outside of a storage chamber 17 provided inside the distal end portion 40 . The channel 15 opens into the rear end side wall 17m of the storage chamber 17 through an opening 15aK. An inductor 18 is stored in the trap in the storage chamber 17. The inductor 18 is provided with a guide groove 19 on its upper surface.
It guides the treatment instrument 16 etc. that protrudes from the opening 15a. Furthermore, an arm portion 20 is provided protruding from the upper surface of the inductor 18 in line with the guide groove 19 . A vertical groove 20a is provided in the upper part of the arm portion 20. In addition, the inductor 18
Bins 21° and 21' are coaxially protruded from both sides of the holder. The inductor 18 is rotatable around this pi/21°21'.

Operation wire 2 attached to inductor operation lever 101C
3 passes through a wire insertion passage 24 disposed within the insertion portion 3 and projects into the storage chamber 17 from an opening 24a thereof.

Pieces 25 and 26 are fixed to the distal end of the operating wire 23 at intervals, for example, by brazing or the like. The portion 23a of the operating wire 23 sandwiched between the pieces 25 and 26 is fitted into the a-groove 20aK, and the pieces 25 and 26 are inserted into the side wall of the arm 20.
The ends of 26 are brought into contact with each other. In addition, vertical groove 2
0a constitutes a locking portion, and the pieces 25 and 26 and their sandwiched portions 23a constitute an engaging portion V, respectively.

As shown in FIG. 5, the bin 21 is located on the side wall 17b of the storage chamber
It is rotatably fitted into a side groove 27 carved in the.

The side wall 17b is connected to the side groove 27 and fitted into the groove 1lI1.
28 is engraved.

A guide 1F129 is connected to the fitting groove 28 and is carved up to the treatment instrument protrusion 12. Furthermore, a through hole 30 is provided in the lower wall 17c of the storage chamber 17 and connected to the fitting groove 28. A stopper member 3 is attached to the upper part of the fitting groove 28.
1 is fitted into the screw hole which penetrates both the side wall 17b and the stopper member 31 and is screwed into the screw hole. It is fixed by screwing in from the outside. Note that the bin 21' is also supported by the side wall 17b of the storage chamber 17 opposite to the side wall 17b in the same manner as described above.

The radius of the pieces 25 and 26 is set to be larger than the distance between the top of the arm 2° and the upper wall 17d of the storage chamber. Also, bottle 21゜21゛? Side @27,27
The guide 18 is set to be sufficiently larger than the radius of the bodies 25 and 26.Then, the guide 18 is set to be sufficiently larger than the radius of the bodies 25 and 26.Then, the guide 18 is set to be sufficiently larger than the radius of the bodies 25 and 26. If you pull it out, the inductor 18 will be at the treatment tool ejection port 1.
It can be taken out from 2.

Next, the operation of the first embodiment will be explained. Inductor 18f
Set the treatment instrument 16 to the state shown in X-31 (standby state).
Insert it from the treatment instrument insertion hole 011 and insert it into channel 15? The 16% end of the treatment tool through the treatment tool protrusion port 12? Only the desired lid is made to protrude.

By doing so, you can easily move it forward or backward. Operation wire 2
When the three pieces are moved back, the side surface of the arm portion 20 is pushed by the end of the piece body 25, and the inductor 18 is moved to the pin 21.21°? It rotates about the axis and enters the state shown in FIG. 4 (raised state). Then, when the operating wire 23 is advanced, the side surface of the arm section 20 is pushed by the end of the piece body 26, and the inductor 18 rotates around the pinot 21, 21' and returns to the standby state. By rotating the guide 18, the angle of the guide groove 19 with respect to the axis of the channel 15 can be changed, and the protruding angle of the distal end of the treatment instrument 16 can be freely changed.

Even if the operating wire 23 rotates about its axial center due to the advancement and retreat of the operating wire 23 or the equal pressure of the curvature of the insertion portion 3, the portion 23a of the operating wire rotates within the vertical groove 2Oa and is not twisted. In addition, even if the operation wire 23 moves back and forth, the arm 20
Since the distance between the top of the inductor 1 and the storage chamber upper wall 17d is set smaller than the radius of the piece body 25, 26, the inductor 1
Due to the rotation of 8, the operator will not be removed from the vertical groove 20a.

When replacing the inductor 18 or cleaning the storage chamber 17, etc., use the inductor 18? The treatment instrument is passed through the treatment instrument protrusion 0121 from the storage chamber 17 and removed as described below. Inductor operation lever 1
0? / Operate the inductor '4f! Set it to the state shown in Figure 3.

Remove the screws 32, 32' and pull the stopper member 31.31'% through the through hole 30.30' to the outside. Bin 21.
21'? Remove from the side groove 27.27' and fit into the groove 28.
28゜ located at the bottom, inductor 18ff lower wall 17clC
Position them so that they touch each other. Then, remove the operating wire from the part 23a & the vertical groove 20a, and remove the bottle 21.21'2.
The guide 18 is aligned with the guide rails 29 and 29' and pulled out in the direction of the treatment instrument outlet 12. Incidentally, when attaching it, it is not necessary to perform the reverse operation even in step 5.

As described above, according to this embodiment, twisting and disconnection of the connection between the inductor 18 and the operating wire 23 do not occur, and
Durability and safety can be greatly improved. Also, inductor 1
8 from the operating wire 23 and the storage chamber 17, the inductor 18. Cleaning of storage room 17 etc. and replacement of inductor 18? It's very easy to do.

Is Fig. 6 a second embodiment of this invention? The arms of the inductor and the operating wires are different from the first embodiment. That is, a recess 41 is provided in the upper part of the arm 40 of the inductor 38, and this recess 41 allows the upper part of the arm 40 to be connected to the first convex part 42 and the second convex part 42.
It is divided into convex portions 43. A vertical groove 44 is provided in the upper portion of the second convex portion 43 of the 24 wire insertion passages.

A bridge body 46 is fixed to the tip of the operating wire 45. This piece body 46 is fitted into the recess 41, and a portion of the operating wire 45 is fitted into the vertical groove 44.

The distance between the top of the convex portion 42 and the storage chamber upper wall 17d is equal to the piece body 46.
The distance between the top of the convex portion 43 and the upper wall 17d of the storage chamber is set smaller than the radius of the piece body 46. Note that the other configurations are the same as in the first embodiment.

Next, the operation of this embodiment will be explained. When the operating wire 45 retreats, the rear end of the piece 46 pushes the front side surface of the convex part 43, and the inductor 38 moves to the position of the bin 21°21'? Rotates around the axis and becomes a raised state. When the operating wire 45 advances, the front end surface of the bridge body 46 touches the rear side surface of the convex portion 42 . When pressed, the inductor 38 rotates around the axis of the bin 21°21' and returns to the standby state. Note that the method of attaching and detaching the inductor 38 is almost the same as in the first embodiment.

FIG. 7 shows a third embodiment of the present invention, which differs from the first embodiment in the arm portion of the inductor and the operating wire. That is, the arm portion 50 of the inductor 4B has a rectangular parallelepiped shape. A rectangular parallelepiped-shaped bridge body 52 is rotatably engaged with the tip of the operating wire 51. One surface of the bridge body 52 has a bottomed hole that matches the shape of the upper part of the arm 50. In this embodiment, the piece body 52 does not rotate relative to !RR2O3, but the operating wire 51 and the piece body 52 are rotatable. is fitted into the side grooves 27, 2τ, the top of the arm portion 50 and the storage chamber upper wall 17d
The interval is set smaller than the size of the direction in which the piece body 52 is attached. Then, the inductor 48 is attached to the upper wall 17c of the storage chamber.
The distance between the top of the arm portion 50 and the storage chamber upper portion 1il17d is set to 5 so that the distance between the uppermost part of the arm portion 50 and the storage chamber upper portion 1il17d is larger than the size in the direction in which the piece body 52 is attached. Note that the other configurations are almost the same as the first embodiment.

Next, the operation of this embodiment will be explained. When the operation wire 51 is moved back, the front side of the inside of the hole 53 becomes the front side of the arm 50? When pushed, the inductor 48 rotates around the bin 21, 21' and is in the raised state.

When the operating wire 51 is spun, the rear side inside the hole 53 pushes the rear S* surface of the arm 50, and the inductor 48 moves into the bin 21.
Rotates to 21'F/axis and returns to standby state.

Is the operation wire 51 the axis? Even if it rotates around the center.

Since the operating wire 51 rotates relative to the piece body 52, twisting does not occur. In addition, the top of the arm portion 50 and the storage chamber upper wall 1
The distance 7d is set so that the installation size of the piece body 52 is smaller than the size in the direction, so the piece body 52 is attached to the inductor 4.
It will not come off during 80 rotations. In addition, inductor 4
The method of attachment and detachment of item 8 is almost the same as that of the first example.

Is Fig. 8 the fourth embodiment of this invention? It shows.

This embodiment differs from the first embodiment in the configurations of the arm portion of the inductor, the operating wire, and the fitting groove. That is, the side wall 6 of the arm portion 59 of the inductor 58
0 has a bottomed fitting hole 61 and wire guide #ll62
are connected and engraved. A bridge body 64 is fixed to the tip of the operating wire 63. A piece 64 and a wire 63 are fitted into the fitting six 61 and the wire guide groove 62, respectively.

The size of the piece body 64 is bin 21.21'G-side groove 27°2
7', the inductor III wall 60 and storage car side f
The size of the piece body 64 in the radial direction is set to be larger than the interval between i17b'.

Then, the fitting groove 28 in the first example is carved sufficiently deep to form the bottle 21.21'? When the 111 conductor 58 is positioned in the fitting groove 28 and moved toward the storage chamber side wall 17b, the VC is set so that the distance between the side wall 60 and the side wall 17b' is larger than the radial size of the piece 64. It is set. Note that the other configurations are the same as in the first embodiment.

Next, the operation of this embodiment will be explained. Operation wire 6
3, the rear end surface of the piece body 64 fits into the groove 61.
Internal posterior aspect? push. Then Bin 21.21'? The inductor 58 rotates about the axis and is in a raised state. When the operating wire 63 is advanced, the front end surface of the piece body 64 presses the front surface inside the fitting groove 61. Then, the inductor 58 rotates about the Y axis of B/21, 21' and returns to the standby state.

Is the operating wire 63 the axis? Since the piece body 64 rotates within the fitting groove 61 even when rotated about the center, the operating wire 6
3 twist does not occur.

Furthermore, when the bins 21 and 21' are fitted into the side grooves 27 and 2γ, the radial size of the piece body 64 is larger than the distance between the inductor side wall 60 and the storage chamber side wall 17b'.
Since this is set, the piece body 64 will not come off from the fitting groove 61 during the rotation operation.

When removing the inductor 58 from the storage chamber 17, use the screw 32?
Remove the stopper member 31 from the through hole 30. The bottle 21.21't' is pulled out from the side grooves 27, 2γ, and the inductor 58 is brought into contact with the storage chamber lower wall 17c. Then, the inductor 58 is moved to the storage chamber side wall 17b side, and the inductor side wall 60
The distance between the spacer and the housing Al 7 b' is made larger than the radial size of the piece body 64, and the connection between the n conductor 58 and the operation wire 63 is removed, and further, the distance between the n conductor 58 and the operating wire 63 is made larger, and the distance between the n conductor 58 and the operating wire 63 is made larger than the radial size of the piece body 64. Guide groove 29.2
9', pull out the Kg inductor 8 on the treatment instrument protrusion side. In addition, when installing the inductor 58, reverse this process 1.
All you have to do is I5.

[Effects of the Invention] As described above, according to the present invention, twisting and disconnection do not occur at the connection between the treatment instrument guide and the operating wire, and the durability and safety of the endoscope can be greatly improved.

[Brief explanation of drawings]

1 to 5 show a first embodiment of the present invention, and FIG. 1 is a schematic diagram of an endoscope, gl! Is figure 2 the tip of the endoscope? Partially cutaway diagram, II! Figure 3 is a longitudinal sectional view of the tip of the endoscope, and Figure 4 is a vertical cross-sectional view of the tip of the endoscope. FIG. 5 is a longitudinal cross-sectional view of the distal end of the endoscope, showing a portion of the side wall and lower wall of the storage chamber. Figure 6) Mako's invention @2%
It is a diagram showing examples of rights. FIG. 7 is a diagram showing a third practical example of the present invention. Figure 8 is the fourth example of this invention! l! It is a figure showing an example of weaving. DESCRIPTION OF SYMBOLS 1... Endoscope, F... Storage chamber, 18... Treatment instrument guide, 20... Arm part, 20 &-... Vertical groove, 23... Operation wire, 25. 26... Piece Figure 1 Figure 3 Figure 4 Figure 6 M7 Figure 1

Claims (1)

[Claims] +11 An inductor storage chamber provided at the distal end of the endoscope;
An operating wire whose end portion is introduced into the inductor storage chamber is connected to an end portion of the operating wire disposed inside the 1114-inductor storage chamber, and the guide wire is rotatable in accordance with the advance of the operating wire. Inside equipped with a treatment instrument guide supported in the child storage room! j! The mirror includes a locking part provided on an arm protruding from the treatment instrument guide, and a retaining part provided at an end of the operating wire, with the operating wire serving as its central axis. . An inner tiger mirror, characterized in that the locking portion and the retaining portion are rotatably locked to the treatment instrument guide. (2) When attaching the retaining part to the locking part, the distance from the wall of the storage chamber facing the locking part to the locking part is in the direction of the locking part. 2. The endoscope according to claim 1, wherein the length of the attachment is shorter than the length in the direction.