JPS61268225A - Auxiliary tool of disposal jig 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 [Field of Industrial Application] The present invention relates to an auxiliary tool for an endoscopic treatment tool that assists a treatment tool such as forceps.

[Conventional technology]

Conventionally, in a general endoscope, a forceps raising base is provided near the opening at the tip of the channel, and the forceps etc. are guided by this forceps raising base, and the forceps raising base is rotated seven times using an operating wire or the like. It is known that the direction in which forceps, etc. are drawn out is restricted.

However, in this type of device, the forceps elevator and related parts are incorporated into the distal end of the endoscope, which increases the size of the distal end. Furthermore, the vicinity of the opening at the tip of the channel becomes complicated and easily clogged with dirt, etc., and cleaning thereof becomes extremely troublesome. Moreover, since the mechanism for pulling and operating the operating wire is provided in the operating section of the endoscope, this operating section also has the drawback of becoming large and heavy.

Therefore, as shown in Japanese Unexamined Patent Application Publication No. 54-88681, a projecting part was provided on the inner circumference of a hood attached to the tip of the insertion part to provide a function of raising the forceps. There is.

[Problem that the invention seeks to solve]

However, with the device proposed in this publication, only a constant lifting angle can be obtained, and the lifting operation is extremely unstable.

On the other hand, an earlier application (Japanese Patent Application No. 59-222437) has proposed a device in which a mechanism for raising the entire tip of the forceps itself is incorporated.

However, with this structure, the diameter of the entire device including its mechanism is quite large, making it unsuitable for insertion into the channel equipped with the insertion WK of endoscopes, which have recently become quite thin in diameter. Further, the tip portion of normal forceps is larger than the sheath portion. Therefore, when this was inserted into a large-diameter channel, the sheath at the distal end of the channel would wobble and play, reducing the ability to aim at biopsies and the like.

The present invention has been made with attention to these problems, and its purpose is to provide an auxiliary tool for endoscopic treatment instruments that can make the endoscope more compact and improve its aiming ability. It depends on providing.

[Means and effects for solving the problem] This auxiliary tool consists of a treatment instrument regulating member that can be freely inserted into the insertion channel of the inner arm, and a shaft for operating the instrument, and the treatment instrument regulating member is inserted into the opening at the tip of the insertion channel. The treatment instrument is fully inserted between the inner peripheral surface and its position is regulated.

〔Example〕

1 and 3 show a first embodiment of the present invention.

1 in FIG. 2 is an endoscope. This endoscope 1 has an operating section 2 connected to an insertion section 3, and the insertion section 3 is connected to the distal end of a flexible tube 4 via a curved tube section 5 to a distal end component 6'ft. The bending tube section 5 can be remotely operated to bend by an operation knob 7 of the operation section 2 via a pair of wires (not shown) inserted into the flexible tube section 4 .

The tip component 6 is provided with an illumination window 8, an observation window 9, and a channel opening 10. As shown in FIG. 1, the tip of an optical fiber bundle 1 is provided inside the observation window 9 via an objective lens 12. The optical fiber bundle 1 is connected through the insertion section 3 and the operating section 2 to an eyepiece section 13 provided on the operating section 2.

On the other hand, the channel opening 10 is connected to the operating section 2 and the insertion section 3.
This structure constitutes the tip of the insertion channel 14 that is inserted through and arranged inside each of the holes.

Further, the base end of the insertion channel 14 is connected to an insertion opening 15 provided in the operating section 2. The insertion channel 14 is configured such that a treatment tool such as a forceps 16 and an auxiliary tool 17 therefor can be inserted simultaneously.

The forceps 16 consists of a tip 18 and a flexible sheath 19 with a smaller diameter. The auxiliary tool 17 is provided with a knob 21 at the base end of a flexible operating shaft 20 and a lifting member 22 as a treatment instrument regulating member at the tip of the operating shaft 20. . The raising member 22 is a cylindrical member with an outer diameter that can be inserted into the insertion channel 14, and a slope 23 that widens toward the tip is formed by notching a portion of the outer periphery. Also,
The outer diameter of the operating shaft 20 is smaller than the inner diameter of the insertion channel 14 minus the outer diameter of the tip 18 of the forceps 16.

Therefore, when all of the auxiliary tools 17 are used, the insertion channel 14 is first inserted from the insertion hole 15 of the auxiliary tool 17.
, and the raising member 22 is projected from the channel opening 10. Then, the forceps 16 are inserted in the same manner, and the tip 18 is pushed out from the channel opening 10. Therefore, assistive device 1
7 and the sheath 19f is sandwiched between the slope 23 of the raising member 22 and the peripheral wall of the channel opening 10 as shown in FIG. Get up.

Note that by twisting the forceps 16 and the auxiliary tool 17 together and changing the position where they are sandwiched, the direction in which they are raised can be changed.

FIG. 4 shows a second embodiment of the invention. In this embodiment, the raising member 22 of the auxiliary tool 17 does not have a slope, but instead has a groove 3θ.

31 was formed. The grooves 30 and 31 have different inclination angles), and by selectively using one of the grooves 30 and 31, the entire raising angle can be changed. When it is desired to change the lifting angle of the clamp, the lifting member 22 is once projected and rotated, and a position where the sheath 19 of the forceps 16 is inserted into the other groove 31, for example, is selected. Then, the auxiliary tool 17 is moved back and the sheath 19 is inserted into the groove 31 to be held and raised.

FIG. 5 shows a third embodiment of the invention. This embodiment is based on the raising member 2 of the auxiliary tool 17 in the first embodiment.
2, an insertion hole 33 separate from the slope 23 is formed. According to this, when raising the forceps, the insertion channel 1
4 and its insertion hole 33, for example, mucus or the like can be suctioned.

FIG. 6 shows a fourth embodiment of the present invention. In this embodiment, the inner wall of the channel mouth 10 is also provided with a slope 34 corresponding to the slope 23 described above. Then, the sheath 19 of the forceps 16 is inserted between both slopes 23 and 34.

In addition, in the present invention, the operating shaft 20 of the auxiliary tool 17 may be formed into a cylindrical part so that the forceps can be inserted and guided through the cylindrical part.

7 to 10 disclose a forceps guiding device different from the present invention. That is, 40 (l-1t for the forceps guiding tool), which has a slot 43 at the tip of the flexible cheep 42 through which the forceps 16 is inserted, as shown in FIG.
- Construct the fully formed chuck part 44. The chuck part 44 is normally opened as shown in FIGS. 7 and 8, and the forceps 1 is opened as shown in FIGS. 9 and 10.
If you stick out 6, you can expand it. After this, when the forceps guiding tool 40 is pulled in, the chuck part 4 expands as shown in FIG.
The sheath 19 of the forceps 16 can be clamped by the forceps 4 being pressed against the periphery of the channel opening 10.

Furthermore, if the inner periphery of the channel opening 10 is tapered toward the observation window 9 side as shown in FIG.
When clamped, the forceps 16 can be directed toward the observation window 9.

12 and 13 show the chuck portion 44 in which the orthogonal points of the cuts of the slots 43 are positioned eccentrically with respect to the central axis. Furthermore, the inner periphery of the channel opening 10 is formed to widen in a tapered shape.

In this way, the forceps 16 can be directed diagonally forward when the forceps 16 are inserted.

〔Effect of the invention〕

As explained above, according to the present invention, since the elevator table and its operating mechanism are no longer necessary, the diameter of the distal end of the endoscope insertion section can be reduced, and the operating section can be made lightweight and compact. . Furthermore, it is possible to prevent the treatment instrument from wobbling, thereby improving its sniping ability.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a side sectional view of the distal end of the endoscope showing the state of use of the first embodiment, Fig. 2 is a perspective view of the distal end of the endoscope in the state of use, and Fig. 3
The drawings are also a sectional view of the raising member, FIG. 4 is a side sectional view of the second embodiment, FIG. 5 is a side sectional view of the third embodiment, and FIG.
FIG. 7 is a side sectional view of the endoscope tip showing how the fourth embodiment is used, FIG. 7 is a side sectional view of the endoscope tip showing how the forceps guide is used, and FIG. 8 shows the forceps. A front view of the chuck part of the guiding tool, and FIG. 9 is a side sectional view of the tip of the endoscope.
Fig. 10 is a front view of the chuck part of the forceps guide, W, Figs. It is a front view of the chuck|zipper part of the same thing. 1... Endoscope, 10... Channel opening, 14...
Insertion channel, 16... Forceps, 17... Auxiliary tool, 20... Operating shaft, 22... Lifting member Patent attorney Atsushi Tsuboi Figure 1 Figure 4WA Figure 5 6 [Figure 7 Figure 8 Figure 9 Figure Otsu 3 No. 10 Procedural Amendment I91. To-58 Director General of the Patent Office Michibe Uga 1, Indication of the case, Patent Application No. 1519, 1988-11, 2, Name of the invention, Auxiliary device for endoscopic treatment device 3, Relationship with the person making the amendment Patent Applicant name (037) Olympus Optical Nikugyo Co., Ltd. 4,
Agent 5 voluntarily corrects Figure 13 as shown in the attached sheet. Part 7 Collection 8 Figure 10

Claims (1)

[Claims] It consists of a treatment instrument regulating member that can be freely inserted into the insertion channel of the endoscope, and an operating shaft connected to the treatment instrument regulating member. An auxiliary tool for an endoscopic treatment tool, characterized in that the treatment tool is inserted between the inner peripheral surface of the opening and the positioning thereof is regulated.