JPS58133225A - Endoscope television apparatus - 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 The present invention relates to posture control of an endoscopic television apparatus that projects images of the inner wall of the apex, the inner wall of the stomach, etc. through an image pickup tube or an image pickup element.

In addition, in this type of endoscopic television device, there are methods that utilize glass filter fibers, image pickup tubes, or image pickup devices as an image transmission device for the purpose of transmitting images from inside the body to outside the body. A method is being used in which a signal line is used instead of glass fiber as an image transmission medium by inserting the image into a living body. In particular, the latter method is widely used because it allows the diameter of the signal line of the image transmission device to be made extremely tight, which reduces the physical stimulation of the throat and reduces the pain caused.

FIG. 1 is a diagram showing a schematic configuration of an apparatus capable of inserting such an imaging device into a living body and examining the state of the inner wall of the digestive organ. In the figure, 5 is a small hollow container that can be swallowed into the living body, and this container has a window 11 in a part of the wall, and this window is provided with a light source 12 such as an ultra-compact lamp to illuminate the inside of the living body. There is. 1 is also a window provided on the wall of the container 5, which receives light reflected from within the living body into the container 5. 2
1 is a light collection lens provided inside the window 1, 3 is a prism provided behind this lens, and 4 is an ultra-small imaging tube that receives light from this prism.

Reference numeral 13 denotes a group of electric wires, and one of these wires is connected to the imaging area tube 4 and the light #12 and is used for a signal, a power source, etc. to be drawn out of the container 5. 14 is J-hand wire group 13
This is a tubular outer sheath that bundles and protects the wires.
3 constitutes a transmission device W6.

Reference numeral 7 denotes a television viewing device provided outside the living body, and this television viewing device is connected to the outer end side of the transmission device 6.

In this way, the inside of the living body is irradiated with light from the light source 12, and the light reflected from the inside of the living body is received and imaged by the image pickup tube 4 via the lens 2 and prism 3, and transmitted outside the living body via the transmission device 6. An observation image is obtained by the television observation device 7.

When attempting to observe the inside of the digestive tract using the endoscopic television device configured as described above, the posture of the container 5 can be controlled by moving the observation field of view or changing the angle while moving the container 5 within the body. It becomes necessary. A method of controlling this posture is to use a flexible wire or the like from outside the body to rotate or tilt the body. Even though wires have been made thinner and more durable, the strength of the wires such as flexible wires for posture control is high, so the thickness of the signal transmission section is not much different from when glass fiber bundles are used. .

The present invention is aimed at solving the above-mentioned problem, and uses a shape memory alloy in a part of the container, and by applying a temperature change to this alloy, the shape changes, thereby controlling the attitude of the S container. We propose an endoscopic television device featuring:

Shaping 1. @Materials are typically Ti-Ni alloys, which have the property of being deformed (memorized) into a certain shape at high temperatures, then returned to their original shape by heating if they were left in a different shape at room temperature. . Therefore, two deformation states can be repeated 0N-OFI;''.

The present invention utilizes a shape memory material to control the posture of a container as described above, and the details of the invention will be described below with reference to the drawings.

FIG. 2 shows a configuration in which a shape memory material is used to move the container 5 back and forth. A spiral shape memory material 15, 16 that can be deformed in the circumferential direction and a coiled shape memory material 17 that can be deformed in the axial direction are attached to the rear part of the container 5 as shown in the figure.

These shape memory materials can be easily heated and deformed by passing an electric current through the alloy material itself.

The operation sequence for the case where the container 5 having such a configuration is to be moved back and forth will be described below.

First, as shown in FIG. 3(a), the shape memory material 16 is heated to cause deformation in the circumferential direction.
6 contacts the inner wall of the vessel 18. In this state, Figure 3 (b)
), when the shape memory material 17 is heated and deformed in the axial direction, the container 5 moves forward in accordance with the amount of deformation of the shape memory material 17. Furthermore, Figure 3 (C)
As shown in FIG. 2, the shape memory material 15 is heated and deformed in the circumferential direction so that its outer circumferential portion comes into contact with the inner wall of the vessel 18. Next, as shown in FIG. 3(d), when heating of the shape memory material 16 is stopped, the shape memory material 16 returns to its original shape. Further, as shown in FIG. 3(e), heating of the shape memory material 17 is stopped and the shape is returned to the shape before deformation.

Next, as shown in Fig. 3(d), after heating and deforming the throat 16, as shown in Fig. 3(f), when heating 15 is stopped, 1
5 is deformed and returns to the state shown in FIG. 3(a), but it can be seen that the container 5 has moved forward by the amount of deformation of the shape memory material 17. By repeating this operation, the container 5 can be continuously moved forward. Moreover, if this operation is reversed, the container 5 can be moved backward.

The above is Shape 1. Although the description has been made with respect to the state in which the material 5 is attached to the rear of the container 5, it goes without saying that the same effect will be produced even if the material is attached at the position indicated by the dotted line at part 0 in FIG.

FIG. 4 shows an embodiment in which a shape memory material is attached to the side of the container, making it possible to tilt the container.

In the figure, FIG. 4(a) is a side view of the container 5;
Figure (b) is a diagram of the container 5 viewed from the front. A complicated shape memory material 19 is attached to the side surface of the container 5, and depending on which shape memory material is deformed, the container 5 can be tilted as shown in FIG. 5(a) or as shown in FIG. 5(b). It can be brought into contact with the side surface of the vessel 18, as in the case of FIG.

The shape memory material 21 used in this way has a diameter of 0.1~
If a thin wire of 0.5 dia. is formed as shown in FIG. 6 and covered with silicone rubber 22, it will be safe even in a housing where electrical insulation is possible. Further, the lead @ 20 is used for passing a current in order to heat the shape memory material 19 .

Although the above description has been made regarding the endoscope television apparatus, it is of course also effective for performing posture control of an endoscope using ultrasonic waves or a combination of the two.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing a rough bottom of the endoscope television device, Fig. 2 is a diagram showing the configuration of an embodiment of the present invention, Fig. 3 is an explanatory diagram of its operation, and Fig. 4 is a diagram showing other embodiments of the invention. A diagram showing the configuration of an embodiment of
FIG. 5 is a diagram for explaining its operation, and FIG. 6 is a diagram showing one embodiment of the shape memory material used in the present invention. Agent Patent Attorney Toshiyuki Usuda 2 Figure q 1 5 Figure (＾U (b) Figure 6 (Good 9 (b)

Claims (1)

[Claims] An endoscope television apparatus characterized in that the imaging tube section is provided with a shape memory material, and the attitude of the imaging tube section is controlled by deformation of the material.