JPH0420409Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an endoscope equipped with a grasping claw at the distal end of the insertion portion, and particularly to an endoscope suitable for removing a metallic foreign object from the body.

[Conventional technology]

Endoscopes equipped with gripping claws at the tip of the insertion section are used to remove stones in the biliary tract and foreign bodies in the digestive organs.

With such endoscopes, if a foreign object such as a mercury battery is accidentally swallowed, it is necessary to remove the foreign object immediately before the metal container dissolves in digestive fluids such as stomach acid. be.

[Problem that the invention attempts to solve]

However, with the conventional endoscope, metal foreign objects in the digestive tract are found and removed while observing the image projected on the eyepiece of the hand-held operation unit, so it is difficult to find the foreign objects in a short time. It can be difficult. Further, even if a foreign object is found, depending on the shape of the foreign object, it may be difficult to grasp it with the gripping claws, and there is a problem that it is not possible to reliably remove it from the body.

The present invention was devised in view of these circumstances, and it is an object of the present invention to propose an endoscope that can easily and reliably remove foreign substances from the body in a short period of time.

[Means for solving problems]

In order to achieve the above object, the present invention is provided with gripping claws that can be opened and closed with each other at a position forward of the tip of the insertion portion via a support shaft provided at the tip of the insertion portion, and the gripping claws are inserted into the insertion portion. An endoscope that opens and closes by pushing and pulling an operating wire is characterized in that a magnet moves in and out of the tip of the insertion portion in conjunction with the opening and closing operations of the gripping claws.

[Effect]

In the endoscope according to the present invention, a magnet is incorporated so as to move protruding and retracting from the tip of the insertion portion in conjunction with opening and closing of the gripping claw. Therefore, when the gripping claws are opened, a magnet protrudes from the tip of the insertion portion, and foreign matter is attracted to this magnet. This allows for the removal of foreign objects from the body in a short time.
It can be done easily and reliably.

〔Example〕

Hereinafter, preferred embodiments of the endoscope according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows the appearance of the endoscope according to the present invention, and as shown in the figure, the endoscope has an insertion section 2.
The main components are a hand operation section 3 and a manual operation section 3. A pair of gripping claws 16, 1 are provided at the tip of the insertion section 2.
6 are provided, and the hand operation section 3 includes a bending operation knob 7, a claw opening/closing operation lever 9, a forceps opening 11,
An eyepiece 13, an air supply button 15, a water supply button 17, and the like are provided. Further, the insertion section 2 of this endoscope is provided with a light guide and an image guide made of an optical fiber bundle (not shown), and the light guide is connected to a light source of a control unit (not shown). Further, the image exit end of the image guide is arranged to face the eyepiece section 13.

Next, the insertion section 2 will be explained according to FIG. 2. In the insertion section 2, one or two pairs of bending operation wires (not shown) can be adjusted to a desired position by operating the knob 7 of the manual operation section 3. It is configured to be freely curved so as to face in the direction of. Each of the gripping claws 16, 16 of the insertion section 2 is configured to open and close by pushing and pulling a single claw opening/closing operation wire 26 inserted into the insertion section 2.

The base 4 attached to the tip fitting 6 is made of a non-magnetic material (for example, aluminum, plastic), and a pair of gripping claws 16, 16, also made of a non-magnetic material, are attached to the support shaft 18. , 18, and is rotatably supported. Each gripping claw 16,1
One end of a link 22, 22 is connected to the inner side of each support shaft 18, 18 via a pin 20, 20 at the base end of the support shaft 6, respectively. The other ends of the links 22, 22 are connected to the piston 24 via a common shaft 28. The piston 24 is disposed in a hole 30 formed in the end fitting 6 so as to be freely movable in the axial direction. The tip of a claw opening/closing operation wire 26 inserted into the insertion portion 2 is fixed to the rear end of the piston 24.

Further, an annular magnet 23 is fixed to one end of the link 22. And the links 22, 22 are
It is arranged in a hole 29 formed in the tip metal fitting 6 and the base 4. The links 22, 22 move forward and backward within the hole 29 by the pushing and pulling force of the wire 26, and as a result, the gripping claws 16, 16 rotate around the shafts 18, 18 to open and close. Moreover, in connection with this, the magnets 23, 23 of each link 22, 22 are adapted to protrude from or sink into the hole 29.

With the endoscope configured as described above, foreign matter inside the body is removed in the following manner. First, the inside of the body cavity is projected onto the eyepiece section 13 of the hand-held operating section 3, and thereby the inside of the body cavity is observed. For example, when removing a foreign object such as a mercury battery from food stagnant in the stomach, first operate the operating lever 9 to push the wire 26 forward, and the gripping claw 16
16 is opened. Along with this, magnets 23, 23
protrudes from the hole 29 at the tip of the insertion section, and in this state, bend the curved section 8 of the insertion section 2 via the operation knob 7 to remove the foreign matter 34 mixed in the food as shown in FIG. to be attracted to the magnets 23, 23.
Then, when the foreign object 34 is attracted to the magnets 23, 23, the operating lever 9 is operated to pull back the wire 26, the gripping claws 16, 16 are closed, the foreign object 34 is caught, and the foreign object is removed from the body.

[Effect of idea]

As explained above, in the endoscope according to the present invention,
When the gripping claw provided at the tip of the insertion section is opened, the magnet protrudes from the hole formed at the tip of the insertion section, so that metallic foreign objects can be easily and reliably removed from the body in a short time.

Further, since the magnet is provided in a part of the opening/closing link mechanism of the gripping claw and is interlocked with the opening/closing operation of the gripping claw, the endoscope insertion portion can be made compact and does not become thick even if the magnet is provided.

[Brief explanation of the drawing]

Fig. 1 is an external view showing the appearance of the endoscope according to the present invention, Fig. 2 is a side sectional view of the insertion part showing the gripping claw in the closed state, and Fig. 3 is a side sectional view of the insertion part showing the grasping claw in the open state. FIG. 2... Insertion section, 3... Hand operation section, 16... Gripping claw, 22... Link, 23... Magnet, 26...
Wire for opening and closing the claw.

Claims (1)

[Scope of Claim for Utility Model Registration] A pair of gripping claws are provided in a position forward of the insertion tube tip so that they can be opened and closed with each other via a support shaft provided at the insertion tube tip, and the gripping nails are used for operation when inserted into the insertion tube. An endoscope that opens and closes via an opening/closing link mechanism by pushing and pulling a wire, and is provided to form a storage space in which foreign objects can be stored when opening and closing. An endoscope, wherein the grindstone protrudes into the storage space from the distal end side of the insertion portion in conjunction with the opening operation of the gripping claw, and moves away from the storage space in conjunction with the closing operation.