JPS6138970A - Formation device of hologram for longitudinal endoscope - Google Patents

Abstract

PURPOSE:To take a hologram of positions to be tested and diagnozed on the inwall of an organic cavity by constituting the titled device with the base parts of many arms having hologram dry plate fitting parts and a body part for hologram formation. CONSTITUTION:The hologram formation device for a longitudinal endoscope is constituted of the base parts 18, 24 of many arms 17 having hologram dry plate fitting parts which are excited so as to be opened widely in accordance with the projected length of the leading end part from a sheath part and the body part for hologram formation. The leading end part is stopped so as to be slightly projected from the leading part A of the endoscope and then only the body part 10 is advanced, so that the arms 17 are respectively opened in accordance with the advancement of the body part 10 and respective hologram dry plates 15 are opposed to the part B to be tested and diagnozed to take the hologram of the positions to be tested and diagnozed in the inwall of the organic cavity.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a transendoscopic hologram creation device.

As research into conventional technology holography has progressed and its essence has been elucidated, its applications have also been developed, and over the past few years, this hologram creation device has been incorporated into so-called endoscopes and used only on the inner walls of various types of equipment. It is also used to inspect and measure the inner walls of biological cavities, and its results have been highly acclaimed.

Problems to be Solved by the Invention Incidentally, this type of imaging device cannot be achieved by simply incorporating a hologram imaging device into the endoscope itself, and is particularly suitable for use with endoscopes used for inspection and diagnosis of the inner wall of biological cavities. Incorporating a hologram creation device that covers a wide field of view in the limited space of the endoscope would unnecessarily increase the diameter of the so-called insertion section of the endoscope, making it virtually impossible. Also, for industrial use, incorporating a hologram creation device that covers such a wide range of subjects is an economical problem, as the endoscope must be large in diameter and expensive. There were 9 drawbacks, and the current situation was that it had not reached the level of practical use.

Means for Solving the Problems In view of the above-mentioned current situation, the present invention provides a method for creating holograms covering a wide range of subjects through a channel for inserting a treatment instrument such as a forceps channel provided in an endoscope. A tubular sheath body made of a flexible material that can be bent freely and can be guided out from the distal end of the endoscope, and can move forward and backward within the sheath body, and the distal end can protrude from the distal end of the sheath body for use as a reference light. A diverging lens for object illumination light is located inside the tip of a flexible jacket tube that encases both a single fiber and an object illumination light fiber for generating object light. A main body for creating a hologram, which is formed by fixing the bases of several arms with hologram plate mounting parts that are biased to expand as they protrude from the distal end of the body, and the bases of the arms of the reference light reflector support member. This device constitutes a transendoscopic hologram creation device, and is capable of creating holograms covering a wide range of subjects.

In other words, the transendoscope hologram creation device according to the present invention has the above-described configuration, and when it is used, first the endoscope is operated and its tip is placed in the desired object such as a living body cavity. After inserting the hologram to the position to be examined, insert the tip of the main body for hologram creation into the sheath. Insert the hologram creation device housed in the hologram generator through a channel for inserting a treatment instrument, such as a forceps channel, into the endoscope L (which has been inserted to the required position), and insert the hologram creation device into the endoscope L, which has been inserted to the required position. If you stop it by protruding it, and then advance only the hologram creation main body part, the several elastic arms with hologram dry plate attachment parts will expand as the hologram creation main body part advances, and the parts to be examined will be expanded. will be face to face.

After doing this, pass the object illumination optical fiber through the
The object beam, which is the reflected light, is directed toward multiple hologram plates, while the reference beam from the single fiber for the reference beam is irradiated by the reference beam reflector. The hologram is directed in the direction of a large number of hologram photoplates to photograph a hologram covering a wide field of view, and after photographing, the tip of the main body for hologram creation is pulled back into the sheath and taken out together with the sheath. It is.

EXAMPLE Hereinafter, the present invention will be explained in detail with reference to drawings showing only essential parts of an embodiment of the present invention.

In the figure, 1 is a tubular sheath made of flexible material, etc., and 10 is movable within the sheath 1, and its tip can protrude from the tip of the sheath 1. This is a main body for creating a hologram that can be bent to follow bending.

In this 10-piece hologram creation main body, a large number of object illumination light fibers 12 for generating object light are densely arranged around a reference light single fiber 11 in the center, and bendable fibers are attached to the outer periphery. A diverging lens 14 for the object illumination light is disposed inside the distal end of the jacket tube 13 made of a flexible material, and a large number of diverging lenses 14 for the object illumination light are disposed on the outer periphery of the distal end. It can be fitted optically tightly into the hologram dry plate 15, the base 18 of the elastic arm 17 with the mounting part 16, and the tip of the sheath body 1, and has a hemispherical reference light reflector 21 fixed thereon. Light reflector support member 2
The base 24 of the second arm 23 is fixed.

In addition, a laser light source such as argon or a laser beam from this laser light source is divided into two by a beam splitting means such as a beam splitter, one of which is sent to the object illumination light fiber 12 for object light generation, and the other is Since the component for guiding the reference light to the single fiber 11 is well known, illustration and description thereof will be omitted. Further, in the above embodiment, the tip of the sheath body 1 is tightly fitted with the reference light reflector support member 22, but the support member 22 is
The reference light reflector 21 may only be supported, and instead of this, a sealing lid may be hinged to the tip of the sheath body 1 and opened and closed by moving the hologram creation main body 10 forward and backward. good. In addition, A in FIG. 3 is the distal end of the endoscope, and B is the subject to be examined within the body cavity.

Therefore, when using this endoscope, first operate the endoscope and point the tip A of the endoscope to the desired subject within the body cavity.

Insert it all the way to the area to be examined B.Preliminarily attach each hologram plate attachment part 16. 15 hologram dry plates each
The hologram creation device, in which the distal end of the hologram creation main body 10 with which the If the treatment instrument is inserted through a channel for inserting a treatment instrument such as the above, the distal end thereof is slightly protruded from the distal end A of the endoscope, and then stopped, and then only the main body 10 for hologram creation is advanced. Depending on the degree of advancement, the arm made of elastic material with a hologram plate mounting part can be adjusted to 17°.
. . . are respectively expanded, and each hologram dry plate 15° .

After doing this, the object illumination light fiber 12 is passed through the object illumination light fiber 12, and the object illumination light is diverged by the diverging lens 14 to widely irradiate the object to be examined, the examination area B, and the object light, which is the reflected light, is applied to each hologram dry plate
A single fiber 11 for reference light is directed in five directions.
The reference light is directed toward each of the multiple hologram dry plates 15 by a hemispherical reference light reflector 21, and a hologram is photographed covering a wide field of view. The distal end of the sheath 1 is pulled back into the sheath 1 in the same manner as when it was inserted, and then the sheath 1 and the sheath 1 are taken out along the longitudinal axis.

Effects of the Invention As is clear from the above description, the present invention utilizes an endoscope equipped with a channel for inserting a treatment instrument of a certain caliber, and allows for extremely easy transendoscopic insertion into various instruments. For transendoscopy, it is possible to take holographic images of not only the structure but also the inner wall of the body cavity, the examined area, etc., and it is also possible to create holograms that cover subjects in an unprecedentedly wide field of view. This makes it possible to provide a hologram creation device.

[Brief explanation of the drawing]

The drawings show an embodiment of the transendoscopic hologram creation device according to the present invention, and FIG. 1 is a longitudinal cross-sectional view for explaining the configuration of the main parts in a state before insertion into the treatment instrument insertion channel of the endoscope. It is a front view, Fig. 2 is a partially cross-sectional plan view showing only the sheath body to explain the main part configuration, and Fig. 3 is a partially cutaway view showing the state of use when it is used. It is. 1; Sheath body 10: Hologram creation main body 11: Reference light single fiber 12; Object illumination light fiber 13; Sheath tube 14: Diverging lens 15; Hologram dry plate 16; Hologram dry plate attachment part 11; Hologram dry plate attachment Arm made of elastic material with function part 18.23; base 21: reference light reflector 22; reference light reflector support member A; distal end portion B of endoscope; test subject in biological cavity, examined part Patent applicant Fuji Photo Kohki Co., Ltd.Figure 1Figure 2Figure 3

Claims (1)

[Claims] A bendable sheath body that can be guided out from the distal end of the endoscope through a treatment instrument insertion channel provided in the endoscope, and a sheath body that moves forward and backward within the sheath body so that the distal end protrudes from the distal end of the sheath body. A diverging lens for object illumination light is located inside the tip of a flexible jacket tube encasing a single fiber for reference light and a fiber for object illumination light for generating object light, and a diverging lens for object illumination light is provided on the outer periphery of the tip.
A main body for creating a hologram, which is formed by fixing the base of an arm with a large number of hologram dry plate mounting parts, which are urged to open and expand as their tips protrude from the sheath body, and the base of an arm of a reference light reflector support member. 1. A transendoscopic hologram creation device comprising: