JPS5873330A - Curve display apparatus of 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 The present invention provides a tube member having a flexible bent portion with a flexible distal end provided outside A of an endoscope insertion portion so as to be inserted into and removed from the tube member, and provided on the operation portion side. An endoscope VC that displays the direction and amount of curvature during operation and has a long insertion section.
The present invention relates to a bending display device for an endoscope that allows sufficient bending operation even when the user bends and has improved operational functionality.

Conventionally, regarding a bending device in an endoscopic fIC, there is a structure in which a Hebel mechanism is used to give a bend to the cannula in an endoscope in which the cannula is inserted into a target location and used for observation, treatment, etc.

In this structure, a wire is connected from the tip of the Hebel to an operating section on the hand side, and the operating section pulls and relaxes this wire. Also, in the conventional bending mechanism of an endoscope, the bending part is bent by pulling and relaxing a wire installed from the operating part through the intermediate insertion part to the vicinity of the distal end.

These means or devices using wires have no problems in endoscopes where the effective length of the insertion section is short, but the longer the length, the greater the frictional resistance between the wire and the tube guiding the wire. Even if an attempt is made to bend the wire by pulling or loosening the wire at the operating section, the force will not be sufficiently transmitted to the distal end of the insertion section, and if the wire is operated with a large force, wire breakage may easily occur. This was insufficient as a bending mechanism for an endoscope.

For example, an industrial 7-eye scope used for observing the steam generation force in a nuclear reactor requires a long one with an effective length of 6 [11 or more]. In this case, the conventional wire-based scope bending mechanism was not able to fully satisfy this function.

Also, rice! I1% Patent Publication No. 3778170 discloses a combination of an endoscope guide tube and an endoscope, but this tube serves as a guide for the endoscope insertion section and does not require bending operation. can't do it freely.

The present invention has been made in view of the above-mentioned points, and includes a tube member having a flexible bent portion at the distal end that allows the endoscope insertion portion to be inserted and removed by sliding. s#c# By configuring it to have a softer part and a harder part than the bending hardness of the bending molding part, the hand 1
At 11, means for enabling the bending operation is provided, and
Operation at the hand 11 [Thus, by displaying an index indicating the amount of bending and the direction of bending at the hand 1, it is possible to perform sufficient bending operations even for family gifts # and 9 that have long insertion parts. Republic when saturated.

An object of the present invention is to provide a curved display device for an endoscope with improved operational functionality.

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

1 and 2 show an outline of a first embodiment of the present invention, in which FIG. 1 shows an endoscope, and FIG. 2 shows an endoscope. ! l indicates a curved sheath.

Insertion consisting of a flexible part depth, a hard part s2', and a hard part 3! IK4, an operating section S to which the proximal end of the rigid section 30 is connected, and an observation eyepiece section 6 connected to the other end of the operating section S. This operation section 5#C is
A 5# IC connector is provided so that it can be attached to a light source device (not shown) via a light guide cable for transmitting illumination light.

- 10,000, The outer periphery #c# of the insertion section 4 is configured so that a curved sheath 8 having appropriate flexibility that can be freely inserted and removed by sliding on the insertion section 4 can be attached. This curved sheath 3 has a bending part 9 having a flexible curved part that is always curved in a predetermined direction by a predetermined amount on the distal end side, and a gripping part 10 on the rear end side.

The flexible bending part 2' and the soft bending part s2 are formed to be harder and softer than the bending hardness of the bending part 9, respectively.

That is, the curved sheath 8 is fitted onto the insertion section 4, and the curved sheath 8 is inserted into the insertion section 4.
When the tip of the bending part 9 is at the outer circumferential position of the rigid bending part 2' as shown in FIG. , On the other hand, the tip of the bending forming part 9 is 5K as shown in FIG.
When the soft bending part 2 is at the outer peripheral tip position, the bending part 9 transfers the soft bending s2 to the shape T of the bending part 9.
It is configured to be curved so that it becomes EAK.

In this case, the bent portion 9 located at the outer periphery of the hard flexible portion 2' is naturally kept in a straight shape.

Therefore, if the tip of the bending molding s9 is positioned midway between FIGS.
The amount of curvature corresponding to a certain bending molding s9 can be obtained.

When the curved sheath 8 is externally fitted onto the endoscope insertion section 4 and the tip of the bending section 9 is positioned closer to the proximal side than the tip of the rigid flexible section 2', (in the state shown in Fig. 3) ) The grip portion 1o on the other end side is located on the rigid portion 3 near the operation si.

The rigid part 3 near the above-mentioned operation lII is formed with a display scale indicating the amount of curvature (for example, the curvature angle) of the end portion 1 shown in FIG. 5, for example. The scale of the part where the end of the part 1G is located is set at 5 to indicate the amount of curvature of the tip part 1, and a bending operation part 11 is formed between the grip mto and the rigid part 3 on which the scale is displayed. There is.

According to this embodiment configured as described above, as described below, even in an endoscope having a long insertion section,
The bending operation can be easily performed.

First, when using the endoscope, the insertion s4 is inserted into the curved sheath 8IIC in advance, and the bent part 9 of the curved sheath a is inserted into the curved sheath 8IIC.
Align the tip of the hard flexible part 2' with the outer periphery of the flexible part 2'.

This state can be achieved by sliding the end of one gripping part 10 to the position indicated as O in the bending operation part 11 shown in FIG. At this time, as shown in FIG.
It is held in a straight line by f. After inserting the insertion s4 into the object or during insertion, when moving the curved sheath 8 to curve the distal end 1 by a predetermined amount, the bending operation section 11 moves the end of the gripping section 10. This can be done by sliding the curve to match the display position of the amount of curvature. This sum saturates the bending operation with high accuracy. Note that by rotating the curved sheath d, it can be curved in any direction.

As mentioned above, #c, according to this embodiment, even if there is an endoscope having a long insertion part, the length of the divine ceremony entrance part 4 is almost irrelevant, the bending operation can be performed by moving the curved sheath 8. When the bending operation unit 111HC bending sheath 8 is also moved, the amount of bending of the distal end of the insertion section 4 is displayed, so a reliable and highly accurate bending operation is possible with a simple operation. to save.

The endoscope according to the present invention can also be applied to a 5K endoscope as shown in FIG. 1, which has a structure in which the rigid bending portion 2' of the above-described embodiment is omitted.

That is, the insertion section 12 is composed of a distal end portion l in which an observation optical system is arranged and housed from the distal end side, and the above-mentioned soft flexible portion (corresponding to the flexible portion 13 and hard portion 14).

The action and effect are almost the same as those of the Japanese water bath shown in FIG. The rigid portion 14 is harder than the flexible bending molded portion 119 of the curved sheath 8, that is, it has a strength (hardness) that will not bend when the p portion #C, II curved portion 9 is fitted onto the outside. A flexible member may be used if necessary. In other words, to bend only the tip llm11 of the straight insertion point,
A rigid part 14 that does not have flexibility is suitable, and a member made of a member having WJII properties is suitable for the insertion rmPRK that has high flexibility.

In addition, as shown in FIG. 7, the hard part 14 shown in No. 6IIIK is divided into two parts: a hardness (or softness) s21 which is harder than the bending molding lI9, and a hardness (or softness) s21 which is harder than the bending molding part 9 and a hard part 14 which is softer than the bending molding part 9.
・Soft part! It can also be a goose.

For item 10 configured in this way, when the tip of the bending molding s9 is on the outer periphery of the flexible part 13 on the tip side, the wrinkled flexible part 13 to which the bending molding part 9 is fitted is curved, On the other hand, if the tip of the bending part 9 has a hard part 21#C and the rear end of this bending part 9 has a (second) soft part 22#c, the bending part 9 is fitted onto the outside. Since the soft part 22 of the part is curved in the shape 5 as shown in Fig. 8, in addition to the bending part in the above-mentioned bending operation (that is, the soft bending part 2°, the soft part 513), it can also be bent at another location ( Therefore, the bending operation range can be widened.In this case, if the length of the rigid part 21 is set to be approximately the length of the bending forming part 9 or longer,
Shape I in which the entire bending molding s9 is fitted onto the outer peripheral part of the rigid part 21
The insertion s12 can be held in a straight line at I#C. If the bending forming part 9 is moved forward from this position, a bending operation similar to that described above can be performed, and if it is moved backward from this position, the (second) flexible part 220 can be bent. . Therefore, the display of the amount of bending in the bending operation section 11 is formed in contrast to the above-mentioned bending operation. 7th
When an endoscope with the configuration shown in the figure is used.

Since a wide range of the insertion portion 11 can be made into the above-mentioned flexible portion 22, it is possible to easily insert the insertion portion even in a highly flexible insertion site, which has the advantage that it can be used for a wide range of applications.

In the first embodiment described above, in the bending operation section 11,
#C is used to display the amount of curvature and make it easier to operate the curvature, but the 91st! 1 shows a second embodiment in which the bending direction is also displayed to further improve operational functionality.

That is, a bending direction display 31 corresponding to the bending direction of the bending molded part 9 on the distal end side of the curved sheath 8 is provided on the grip portion 10#C, and this display 3! By looking at which direction is on the external axis of the insertion s4 or 12 in the bending operation section 11, it is possible to know in which direction the distal end 1 of the insertion s4 or 12 is bent, such as up and down or left and right. .

In addition to this, there is a marker 32 on the insertion section 4 or 12 of the bending operation section 11.
On the other hand, the gripping part 10 is provided with an indication indicating directions such as left, right, up, down, etc., and when the curved sheath 6 is rotated, the indication on the gripping part 10 that comes to the position of the index 3'1 is inserted @ 1 or 12 on the distal side. It can also be made into 5 to represent curvature.

By providing an indication that shows the direction of curvature,
Bending operations are facilitated and improved operating functionality is achieved.

Note that if only the direction of curvature is displayed, the operational functionality can be improved to some extent.

As described above, according to the present invention, the curved sheath, which is fitted onto the endoscope insertion section and has a bending part at its tip, is slid and moved or rotated, so that the bending part is more rigid than the bending part. If a soft and hard member is provided on the distal end side of the insertion section, the amount of bending and the amount of bending when the bending sheath is slid and moved or rotated toward the bending operation section on the other end side of the insertion section. Since the direction of the bending is indicated, even if the endoscope has a long insertion section, the bending operation can be performed. It has the effect of being able to operate.

[Brief explanation of the drawing]

1 to 8 relate to a first embodiment of the present invention, in which FIG. 1 is a front view showing an overview of the endoscope, and FIG.
A front view showing the curved sheath, FIG. 3 is 1. @A sectional view showing how the endoscope shown in Fig. 1 is inserted into the curved sheath shown in Fig. 2 and kept in a straight line. FIG. 4 is a sectional view showing how the endoscope is bent, W, and FIG. 5 is a front view showing an enlarged view of the bending operation section.
Figure 6 is a front view showing another configuration example of the distal side of the endoscope insertion part in the first embodiment, W, and Figure 7 is a front view showing another configuration example of the distal side of the endoscope insertion part in the first embodiment. FIG. 8 is a front view showing a configuration example, FIG. 8 is a cross-sectional view showing a state in which the insertion section of FIG. 7 is inserted into a bending sheath and curved, and FIG. It is a front view which expands and shows. 1--Tip, 2--Soft bending part, 2'-
- Rigid flexible part, 3... Rigid part, 4.12- Insertion part, 5- Operating part, 8- Curved sheath, 9...
-Bending molding part, 10-grip part, 11-bending operation part, 31-(curving direction) display, 32...indicator.

Claims (1)

[Claims] (1) A tube member having a flexible bending part on the distal end side that can be swiped to the insertion part is provided on the outer periphery of the insertion part of the endoscope so that it can be freely fitted and removed. The insertion part is made bendable by having five parts having a softer member and a harder member than the bending hardness of the bending molded part, and a part near the proximal operation part when the tube member is externally fitted, and a part that is hard to bend. A curved display device for an endoscope, characterized in that the insertion portion is provided with a display means that is curved. e) The curvature display device for an endoscope according to claim 1, wherein the display means displays at least one of the amount of curvature and the direction of curvature of the insertion section.