JPH034244Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a canal scope for observing the situation inside the root of a tooth in dental treatment.

Prior Art In dental treatment, treatments such as placing a filling inside the tooth root are performed after cutting, shaping, and cleaning the tooth root. In this case, it is necessary to check whether the tooth root has been properly cut and shaped A canal scope (root mirror) is used for this purpose. Conventional canal scopes simply involve inserting a mirror into the oral cavity to view tooth roots, which is extremely difficult to use, and the interior of the tooth root is dark, making it difficult to see clearly.

In view of the above-mentioned circumstances, the applicant first irradiated light into the tooth root and made it possible to insert an objective lens into the tooth root, thereby accurately observing the situation inside the tooth root. He proposed a canal scope that could be used to obtain the desired results.

FIG. 3 is an overall configuration diagram for explaining an example of the canal scope previously proposed by the applicant;
The figure is a detailed view of the part shown in FIG. 3, in which 1 is a lens barrel, 2 is a light guide disposed along the outer peripheral surface of the lens barrel 1, and 3 is the lens barrel. The tip of the root mirror is disposed at one end of 1, and 4 is a thin tube provided at the tip of the root mirror. There is. 5 is an objective lens, 6a is a mirror, 6b is a relay lens,
7 is an eyepiece, 8 is a light guide, 9 is a light source connection plug, and 10 is a coupling; in use, the light guide 8 is connected to the light guide 2 disposed along the lens barrel 1 by the coupling 10. and light source connection plug 9
The more introduced light is transmitted through the light guides 8 and 2 and is emitted from the tip 2a of the light guide 2.
As described above, the root mirror tip 3 is formed into a thin tube 4 that is sufficiently thin to be inserted into the tooth root, and an objective lens 5 is disposed at the tip. Therefore, when in use, when the thin tube 4 is inserted into the tooth root and light is introduced into the light guide 8 using the light source connection plug 9, light is emitted from the tip of the light guide 2, illuminating the inside of the tooth root, and illuminating the tooth root. The internal image is transmitted to the eyepiece lens 7 through the objective lens 5 and the relay lens 6b, allowing accurate observation of the inside of the tooth root. As the light guide 2, for example, an optical fiber bundle is used, and the optical fiber bundle is unbundled in the vicinity of the thin tube 4, and arranged approximately evenly around the outer circumference of the thin tube 4, so that the light is emitted from the light emitting end. The light emitted from the light emitting end 2a may be emitted without passing through the objective lens 5, or the light emitted from the light emitting end 2a may be emitted through the objective lens 5. ing.

However, the above-mentioned canal scope is used by inserting a thin tube 4 into the tooth root, but the optical fiber 2 is arranged along the inner circumferential surface or outer circumferential surface of the thin tube. The disadvantage was that the thin tube inserted into the tube was thicker, making it difficult to operate.

Purpose The present invention was developed in view of the above-mentioned circumstances, and in particular, the above-mentioned tubules are further made thinner so that the state inside the tooth root can be observed with ease of operation.

Configuration Figure 1 is an overall configuration diagram for explaining an embodiment of the canal scope according to the present invention, and Figure 2 is a
This is a diagram showing details of the portion shown in FIG. 1, in which parts having the same functions as the canal scope shown in FIG. 3 are given the same reference numerals as in FIG. 3. Therefore, the present invention replaces the optical fiber 2 used in the conventional canal scope shown in Fig. 3.
The part along the thin tube 4 is omitted, and the light emitting end 2a of the optical fiber 2 is placed near the upper end of the thin tube 4, and the light emitted from the light emitting end 2a is introduced into the tooth root. It was designed to provide lighting.

Effects As is clear from the above explanation, according to the present invention, since the thin tube inserted into the tooth root can be made thinner, a canal scope with good operability can be provided.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram for explaining an embodiment of a canal scope according to the present invention, and FIG.
FIG. 3 is an overall configuration diagram showing an example of a canal scope previously proposed by the applicant. FIG. 4 is a diagram showing details of the section shown in FIG. 3. It is. DESCRIPTION OF SYMBOLS 1... Mirror shaft cylinder, 2... Light guide, 3... Root mirror tip, 5... Objective lens, 6a... Mirror, 6
b...Relay lens, 7...Eyepiece lens, 8...
Light guide, 9... Light source connection plug, 10... Coupling.

Claims (1)

[Scope of utility model registration request] a lens barrel, an objective lens provided at one end of the lens barrel, an eyepiece provided at the other end of the lens barrel, and for transmitting an image of the objective lens to the eyepiece. a relay lens; and a light guide disposed along the lens barrel; arranged,
The light guide is configured such that light is introduced from one end thereof, and the other end is terminated at a position close to the lens barrel at the upper end of the thin tube, and the light emitted from the termination illuminates the inside of the tooth root. A canal scope characterized by: