JPS5940001Y2 - Endoscope - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an endoscope that allows observation in at least two directions, such as so-called orthogonal view and side view.

Endoscopes that are equipped with a plurality of observation optical systems and correspondingly a plurality of observation windows at the object-side tip have already been proposed and put into practical use.

Here, it is desired that the above-mentioned type of endoscope can also be used with forceps that can collect, for example, polyps or other foreign bodies present in the body cavity.

However, providing a plurality of almost identical forceps insertion passages corresponding to each observation direction and an operation means for swinging the tips of the forceps is not necessary for an endoscope that is desired to have a smaller diameter and more compact shape. This can be said to be extremely difficult in terms of design due to lack of space.

Furthermore, when switching from one observation direction to the other, the forceps that have been inserted must be inserted into another insertion passage, making it difficult to select the insertion passage for endoscopes that require quick operation. Factors such as errors are also added, which is undesirable.

In view of the above, the present invention provides an improved endoscope with good operability.

Hereinafter, an endoscope according to the present invention will be described in detail based on an embodiment shown in the accompanying drawings.

FIG. 1 is a schematic diagram showing the main parts of an embodiment of an endoscope according to the present invention, and the endoscope 10 includes a rigid tip section 20 on the distal end side of the objective, a hand operation section 30, and a rigid tip section 20 on the distal end side of the object. It consists of a flexible or rigid connecting tube 40 that connects the part 20 and the hand operation part 30, and includes a plurality of observation optical systems (two observation optical systems in this embodiment) and a plurality of illumination optical systems (two observation optical systems in this embodiment). In the example, two illumination optical systems) are built in, and in conjunction with this, as shown in FIG.
and an illumination window 22, and a second observation window 23 and an illumination window 24 for so-called lateral viewing are provided on the sides thereof, respectively, so that the tank can be viewed from the side and from the side. It has bottomed out.

The feature of the present invention is that the first and second
A common opening 26 corresponding to both observation windows 21 and 23 is provided along the windows, and a forceps as shown in FIG.

The hand insertion passage 50, the forceps swinging member 60, and the wire 7
It is at 0.

More specifically, the insertion passage 50 has one end connected to the forceps insertion opening 31 of the hand operation section 30 and the other end 51.
is provided so as to communicate with the opening 26.

The forceps swinging member 60 is pivotally mounted with a shaft 61 below the other end 51 of the insertion passage 50 of the opening 26, and this swinging member 60 has the following features:
One end is fixed to an eccentric position of the swinging member 60, and the other end is caused to swing by pushing and pulling a wire 70 passed through the hand operation section in the direction of the arrow.

For example, the third
When the forceps 80 is in the position shown by the solid line in the figure, it can be used for orthogonal observation, and the swinging member 60 is raised by pulling the wire 70 toward the hand, and the tip 81 of the forceps 80 is placed in the position shown by the broken line. Depending on the state, it can be used in a side view observation direction.

Next, another embodiment of the present invention will be described with reference to FIG. 4. The endoscope in this embodiment is the same as the embodiment described above.
This is an endoscope with a hood added.

That is, a threaded groove 25 is provided on the peripheral wall of the distal end of the rigid distal end portion 20' of the endoscope shown in FIG. 4, and is used for attaching a hood 90, which will be described later.

The hood 90 has a threaded groove 91 on its inner circumferential wall that engages with the threaded groove 25, and a notch 92 extending from the front end opening to the rear end opening on the circumferential side wall of the hood.

This notch 92 forms a hood 9 in the rigid tip portion 20'.
0 is provided so as to match the opening 26' provided in the rigid tip portion 20' when the tip is attached.

Therefore, an endoscope equipped with a hood configured in this way,
As in the previous embodiment, the forceps can be operated without being hindered by the hood.

As is clear from the above explanation, according to the endoscope according to the present invention, the same insertion path and forceps operating means can be used in common for at least two observation directions. Therefore, even if the observation direction is changed, there is no need to insert the forceps again and the operation can be performed quickly.

In addition, by providing a notch to form an opening in the hood, it can be used without impairing the function of the hood, which is effective for close-up observation. This is extremely large from a physical and operational point of view.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an embodiment of an endoscope according to the present invention, FIG. 2 is a perspective view showing the main parts thereof, FIG. 3 is an explanatory diagram showing the main parts thereof, and FIG. 4 is a diagram showing the main parts thereof. FIG. 7 is a perspective view showing another embodiment. 20... Tip rigid part, 21.23...
Observation window, 26...opening, 50...insertion path, 60...swinging member, 70...wire, 80...forceps , 90...Hood, 92...Notch.

Claims (1)

[Scope of utility model registration request] In an endoscope having observation windows with different observation directions so as to enable observation in at least two directions, a common opening is provided along the vicinity of each observation window through which the tip of the forceps can protrude and swing. One forceps insertion passage, one end of which is connected to the forceps insertion port of the hand control unit, communicates with the opening, and the other end of the forceps insertion passage is connected to the forceps insertion port of the hand control unit, and one forceps is provided in which the tip of the forceps can be swung in each observation direction by hand control within the opening. An endoscope characterized by having a swinging member.