JPS6015521Y2 - Endoscope angle structure - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the structure of an angle part in an endoscope, a gastrocamera, etc.

There are various types of structures for angle portions of endoscopes, etc., each having advantages and disadvantages.

One possibility is to use a wire spiral, but although the spiral has excellent flexibility, it cannot be used in that position because it stretches in the vertical direction.

Therefore, as shown in FIG. 1, there is a device in which a flexible plate having a corrugated shape matching the pitch of the spiral is fitted on both sides of the center of the spiral body to prevent it from shrinking in the vertical direction.

However, although this structure allows bending in two directions, bending in the width direction of the plate is not possible.

Therefore, to create a structure that bends in four directions, as shown in Figure 2, a plate with a corrugated shape that matches the pitch of the spiral is cut into short pieces, a cut is made in the center in the vertical direction, and the plates are assembled alternately at right angles and fitted into the spiral body. Some have a structure that allows bending in one direction.

The above two structures have advantages such as superior flexibility, simple structure, and easy manufacture, but because the partition is partitioned by inserting a plate inside the spiral body, the effective usable area inside the spiral body is This has the disadvantage that the space used is reduced and the area used is partitioned, resulting in a large number of unnecessary voids.

Therefore, the present invention solves the above-mentioned drawbacks, and maintains the distance between the fixed spirals by facing each other with two half-cut cylindrical bodies that have edges formed with corrugations or small holes that match the pitch of the spirals at both ends. By connecting spiral spacer retainers with corrugated protrusions at symmetrical positions on the outside of the body or cylindrical body and fitting them into the spiral body, an angle part is formed, which has excellent flexibility and a wide effective usable area. The purpose is to obtain an angle structure having features such as no waste.

FIG. 3 shows an embodiment of the present invention, in which two half-cut cylinders 3 are formed with wavy edges 1 at a constant pitch on both sides and whose width gradually narrows toward the center 2. They are fixed facing each other to form one spiral spacing member 4 as shown in FIG.

Therefore, when constructing an angle part that requires bending in only two directions, as shown in FIG. It can be constructed by internal locking by means of the corrugated edge 1.

Incidentally, the insertion hole 6 for the angle operation wire may be formed to protrude inside the central portion 2.

Next, when making an angle part that can be bent in four directions, as shown in FIG. Can be configured.

In this case, the insertion hole 6 for the angle operation wire is in the center part 2.
A protrusion may be formed on the inner side and on the inner side of the joint portion of the half-cut cylinder 3.

In addition, when internally locking in the spiral body 5, as shown in FIG. 6, consecutive parts of the spacer holder 4 of continuous spirals are made to overlap so that they overlap by one pitch or more of the spiral body 5. If you leave it there, the spiral body 5 will not be stretched.

The angle portion assembled in this manner is covered with an outer cover in the same way as a conventional angle structure, and becomes a tip angle structure of a flexible endoscope or the like.

In the above embodiment, instead of the waveform of the waveform edge 1, the 7th waveform
As shown in the figure, the small holes 7 may have the same pitch.

Furthermore, the spiral spacing member 4 does not have a structure in which half-cut cylinders are combined together as in the above embodiment, but as shown in FIG. Locking part 1
It is also possible to have a structure in which 0 is fixed.

According to the present invention having the above structure, since it uses a spiral body with excellent visibility, it has good flexibility in two or four directions, and is extremely easy to assemble, requiring a skilled technique. It's something you don't do.

Furthermore, since there is no partition within the spiral body, the effective usable area within the angle is wide and can be used effectively.

Furthermore, since there is no need for the connecting wire used to connect the pieces of the conventional type, there is no accident of cutting the connecting wire, and the complexity of the disassembly and assembly work is reduced.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of a conventional example, Fig. 2 is an explanatory diagram of a conventional example, Fig. 3 is a perspective view of a half-cut cylinder showing an embodiment of the present invention, and Fig. 4 is an explanatory diagram of a conventional example.
The figure is a perspective view of a spiral spacing holder showing an embodiment of the present invention, Fig. 5 is an explanatory diagram showing an embodiment of the bidirectional bending of the present invention, and Fig. 6 is a perspective view of the spiral spacing holder showing an embodiment of the present invention. FIG. 7 is a perspective view showing a half-cut cylinder according to another embodiment of the present invention; FIG. 8 is a perspective view showing a spiral spacing holder according to another embodiment of the present invention. be. 1... Waveform edge, 2... Center, 3...
... Half-cut cylinder, 4 ... Spiral spacing holder, 5 ... Spiral body, 9 ... Cylindrical body.

Claims (1)

[Scope of utility model registration request] Edges 1 with spiral locking parts such as corrugations and small holes are formed on both sides, and two half-cut cylinders 3 with a narrow center part 2 are placed facing each other and joined at the edges 1 to form a cylindrical shape. The interior is characterized in that the formed spiral spacing member 4 is continuously fitted inside the spiral body 5 by the spiral locking portion, so that the entire body is formed into a flexible tube body. Angle structure of the endoscope.