JPS59171530A - Oral cavity observing device - 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] (a) Technical field The present invention relates to an intraoral observation device for medical treatment such as dentistry.

Observing and diagnosing the teeth and periodontal conditions in the oral cavity is the basis of dental practice. The present invention provides an apparatus that allows the inside of the oral cavity to be observed clearly by a large number of people including patients.

(a) Prior Art Since the oral cavity has only a partial opening, conventionally, as shown in FIG. 7, a reflecting mirror 5 II was inserted into the mouth to observe the reflected image.

Although such conventional intraoral observation methods are simple, they have the following drawbacks.

Since the dentist holds the reflector 50 in his hand and observes the teeth and periodontal region while moving the mirror, only one dentist can observe the inside of the patient's mouth. The inside of the mouth cannot be observed simultaneously by multiple observers.

The patient is unable to observe the inside of his or her mouth. For this reason, the patient may not be satisfied with the dentist's diagnosis or treatment, and the patient may feel uneasy.

Furthermore, since the diagnosis is left to the temporary judgment of a single doctor, there are also concerns on the part of the doctor. This is because the observed image cannot be recorded.

Since it cannot be observed by many people at the same time, it is not suitable for the education of dentists.

Additionally, small areas often have to be viewed under poor illumination, resulting in dark reflected images and tiring dentists.

(i) Intraoral Observation Apparatus of the Present Invention The present invention provides an intraoral observation apparatus using an intraoral monitoring probe that guides illumination light into the oral cavity and directly transmits the illuminated bright image through an image fiber.

A reflector is attached to the tip of the intraoral monitoring probe.

The illumination light is reflected by a reflector and guided to the teeth and periodontal region. On the other hand, images of teeth and periodontal teeth are reflected by a reflecting mirror, incident on an imaging lens, and after being imaged by the lens, the images can be directly transmitted through an image fiber.

FIG. 1 is an overall configuration diagram of an intraoral observation device of the present invention.

The intraoral monitoring probe 1 is inserted into the oral cavity, irradiates illumination light, and transmits an image of an object through an image fiber.

Therefore, a fiber bundle 2 that is a combination of an image fiber and an illumination light fiber bundle continues from the intraoral monitoring probe 1 to the television camera 3.

The television camera 3 captures the image transmitted by the image fiber and records it on the video tape recorder 4. At the same time, images are projected onto Videomonique 5.

The fiber bundle 2 is split into two at its end. The illumination fiber bundle 6 is connected to an illumination light source 7.

The light emitted from the illumination light source 7 enters the illumination fiber 6,
The light propagates through the fiber bundle 2, exits from the intraoral monitoring probe 1, is reflected by the reflector at the tip of the probe 1, and irradiates the object.

An image of the object that has become brighter and clearer after receiving the illumination light is reflected by the reflecting mirror, enters the image fiber in the probe 1, and is transmitted thereby.

FIG. 2 is a longitudinal sectional view of the intraoral monitoring probe 1. FIG.

Figures 3, 4, and 5 are ■-III and II in Figure 2.
-■, v-■ cross-sectional enlarged views.

As is clear from FIGS. 4 and 5, the fiber bundle 2 has an image fiber 10 at the center, and a large number of illumination fibers 6, 6, . . . are arranged concentrically around the image fiber 10.

The outermost part is surrounded by a flexible tube 11. Image fiber 10 and illumination fiber 6
There is an image fiber cover m12 between the two fibers to prevent mutual interference of scattered light between the two fibers. A coating 13 is provided around the outer periphery of the illumination fiber 6.

The case of the intraoral monitoring probe 1 consists of two cylindrical bodies. They are a probe outer cylinder 14 and a flexible tube connecting cylinder 15.

A trapezoidal screw 16 is cut into the inner surface of the flexible tube connecting cylinder 15. The tip of the flexible tube 11 fits into the trapezoidal screw 16.

The flexible tube 11 is thus fixed to the flexible tube connecting cylinder 15.

The probe outer cylinder 14 and the flexible tube connecting cylinder 15 are connected and integrated at the connection s17.

At the front end of the probe outer cylinder 14, a series of connecting rods 18 are fixed, which are bent in the shape of a "<". Mira connecting rod 18
The tip of the mirror is further bent at a right angle, and a circular dish-shaped mirror mounting plate 19 is fixed thereto. A mirror 20 is attached to the surface of the mirror attachment plate 19 near the probe.

The mirror 20 is located on the extension of the axis of the image fiber.
The mirror 20 is provided so that its center is located, but it is tilted at an appropriate angle with respect to the axis of the image fiber normal ii to the mirror 20.

The front end of the image fiber 10 is partially stripped of the coating 12 and inserted into the I7 end of the image fiber attachment jig 21. The image fiber 10 and the mounting jig 21 are bonded together with a suitable adhesive, and the end surfaces of the image fiber 10 and the mounting jig 21 are finished in the same manner. A lens attachment jig 22 is fitted into the narrow diameter portion of the first half of the image fiber attachment jig 21 .

The lens mounting jig 22 is cylindrical and has a wide inner diameter space 1 at the front.
c l"j, the lens 23 is secured by a lens tightening nut 24.

The lens 23 is used to properly connect the real image of the object to the end face of the image fiber 10, and may be a combination of spherical lenses or a cylindrical lens with a gradient index of refraction.

Since the front end of the image fiber 10 occupies a rather large space for providing a lens, the illumination fiber 6 must be arranged so as to diffuse outward in front of the probe.

Therefore, the illumination fiber outer tube 25 and the illumination fiber inner tube 26 are connected to the probe outer tube 14 and the illumination fiber 6,
It is interposed between the image fiber attachment jig 21 and the image fiber attachment jig 21.

Further, a separation cylinder 27 is inserted near the rear end of the image fiber attachment jig 21 to spread out the illumination fiber 6.

FIG. 6 is a schematic diagram showing only an optical fiber portion and a reflecting mirror portion of the intraoral monitoring probe for explaining the operation.

The operation of the above configuration will be explained.

The illumination light () reaches the intraoral monitoring probe 1 from the illumination light source 7 through a bundle of illumination fibers 6. The illumination light is emitted from the end face of the probe, hits the entire surface of the mirror 20 in front, and is reflected.

The reflected light illuminates the teeth and periodontal areas in the oral cavity.

The image light of teeth and periodontals that becomes clear after receiving the illumination light is reflected by the mirror 20 and sent to the intraoral monitoring probe 1.
The light enters the lens 20 of. The lens 20 forms an image of the object on the end face of the image fiber 10.

This image propagates as it is through the image fiber 10 and reaches the television camera 3 provided at the end of the fiber bundle 2. In the television camera 3, the optical image is converted into an electrical signal.

The image information that has become an electrical signal is sent to a video tape recorder 4.
It is possible to record the image on the screen or display it large and brightly on the video monitor 5.

In FIG. 1, the cable 8.9 connecting the television camera 3, video tape recorder 4, and video monitor 5 can also be replaced with a communication line. In this way, it is also possible to transmit images over long distances and perform remote diagnosis.

(1) Dimension example of example An example of the dimensions of the components of the probe is shown.

The total length of the probe is 110M, and the outer diameter is 12.7mm.

The diameter of the mirror of the reflecting mirror is 25 mm, the diameter of the mirror mounting plate is 27 mm, and the axial length of the portion of the series of mirrors that protrudes from the end face of the probe is 17.5 mm.

The angle of inclination of the mirror normal to the image fiber optical axis is 3
It is 0°. Therefore, the angle of incidence and angle of reflection of the light beam passing through the central axis and entering the mirror are 3o0.

The illumination fiber has a diameter of 1 mm, and the image fiber has a diameter of 1.5 mm.

(0 years old) Effects The present invention allows the inside of the oral cavity to be observed in a large and bright manner by simply inserting a small probe using an image fiber into the oral cavity, so the present invention has the following effects.

+11 Patients can fully observe their own affected areas with their own eyes, confirm the necessity and effectiveness of treatment, and receive treatment with peace of mind.

(2) Depending on the case, the situation of the affected area can be shown and discussed in detail with other specialists, or in some cases with specialists located remotely. In this way, appropriate measures can be taken.

This is because multiple doctors and patients can clearly observe the inside of the oral cavity, and clear images can be transmitted over a long distance.

(3) Convenient for the education of dentists and accurate recording of symptoms. This is because images can be recorded.

(4) Doctors get tired because the small disease ■3 is enlarged and displayed.

There is an effect like this.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of the intraoral observation device of the present invention. FIG. 2 is a longitudinal sectional view of the intraoral monitoring probe. FIG. 3 is a view taken along arrows III-III in FIG. 2. FIG. 4 is an enlarged sectional view taken along line IV-IV in FIG. 2. FIG. 5 is an enlarged sectional view taken along the line ■-■ in FIG. FIG. 6 is a schematic diagram of the fiber element and reflector of the intraoral monitoring probe. FIG. 7 is a schematic diagram of a conventional intraoral observation method. 1...-- ・Intraoral monitor prog 2 ・・・・
... Fiber bundle 3 ... Television camera 4-1 --- Videotape recorder 5 ...
...Video monitor 6...--Illumination fiber 7...Illumination light source 10...Image fiber 1
1 ......Larexible tube 12
--- Image fiber 'f & cover 13 --- Cover 14 --- Probe outer tube 15 --- Flexible duplex connection tube 18-
Mirror connection rod 19 --- Mirror removal q plate 20 -- ・ ・ ・ ・ Mirror -21
・ ...Image fiber installation jig 22
... Lens mounting jig 23 ... Lens 24 ... Lens tightening nut 25 ... Lighting fiber outer tube 26 ... Lighting fiber inner tube

Claims (1)

[Claims] 1+) The image fiber 10 and the illumination light that guides the illumination light... The fiber 6 and the lens 23 provided in front of the end face of the image fiber 10 are included inside, and a mirror is provided in front. An intraoral monitoring probe 1 having a mirror 20 supported diagonally with respect to the optical axis by a connecting rod 18; a fiber bundle 2 having an image fiber 10 and an illumination fiber 6 supported inside by a flexible tube 11; It consists of a television camera 3 provided at the other end of the image fiber 10, an illumination light source that provides illumination light to the illumination fiber 6, and a video monitor 5 that displays the optical image converted into an electrical signal by the television camera 3. An intraoral observation device characterized by: (2) An intraoral observation device according to claim 1, which includes a video recorder 4 that records the optical image converted into an electrical signal by the television camera 3. (3) Television camera 3 and video tape recorder 4
, and a video monitor 5 through a communication line.