JP2009297185A - Dental handpiece (with fiber scope) - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dental handpiece allowing an operator to visually recognize an affected part without interrupting root canal cleaning and expansion work. <P>SOLUTION: The distal end of a flexible portion 2c of an ultrafine fiber scope is attached proximally to the chuck of this dental handpiece 1 and the periphery of the distal end of a cutting instrument or the like is captured by an objective lens part and an illumination part. The operator can observe a capturing image by peering through an eyepiece section 2e. For example, the operator can view the residual state of the dental pulp lid by inserting the cutting instrument or the like from a hole bored in a tooth for the root canal treatment. Even to the last molar distal portion, the operator can work while observing the affected part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to dental handpieces of “air turbine”, “electric type” and “for end” equipped with a fiberscope. According to the dental handpiece of the present invention, it is easy to see and efficiently perform operations such as root canal cleaning expansion and the accompanying tooth cutting, which are difficult to secure a visual field.

When root canal treatment is performed with a dental handpiece, a minimum hole is made in the crown and pulp cover, and a cutting instrument attached to the dental handpiece is inserted through the hole to expand the root canal cleaning. Since the hole is very small, the root canal opening which is the affected part is hidden under the cutting tool or the like.

Therefore, the surgeon removes the cutting tool from the affected area, and visually recognizes the affected area using a dental mirror, an oral endoscope (see, for example, Patent Document 1) or the like.

Patent Publication 2004-65623

Dental mirrors and oral endoscopes are inserted into the oral cavity to project the affected area, so that the affected area is narrow and difficult to see directly in the oral cavity where the viewing angle is limited. Since the hole for treatment is very small, the work cannot be reflected unless the operation is interrupted and a cutting tool or the like is taken out from the affected part. Therefore, the surgeon repeats the work of “cleaning and enlarging little by little and taking out the cutting tool etc. from the affected area and projecting it”, so if the work efficiency is poor and the work time becomes longer, the burden on the patient will increase accordingly. Become.

An object of the present invention is to develop a device that solves the conventional inefficiency and leads to a reduction in the burden on not only an operator but also a patient.

In order to solve the above-mentioned problem, the present invention attaches the tip of the soft portion 2c of the ultrafine fiberscope (endoscope having a flexible insertion portion) near the chuck 1a of the dental handpiece 1, and the tip of the cutting instrument 10a or the like. The vicinity of the image is taken with the objective lens unit 2b and the illumination unit 2a. By doing so, it is possible to see the photographed image by looking into the eyepiece 2e.

For example, by inserting a cutting tool 10a attached to the product of the present invention through a hole drilled in the tooth 4 for root canal treatment, it is possible to view the remaining state of the dental pulp cap as an image.

In addition, the distal molar distal portion which is difficult to visually recognize even in the conventional method can be operated while looking at the affected area in the product of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to FIGS.

(First embodiment)
First, a first embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is an external view of a main part of a dental handpiece (with a fiberscope) according to a first embodiment. In FIG. 1, the present invention mainly includes a dental handpiece part 1, a fiberscope part, and a fiberscope body 2, and a holder 3 for externally attaching the dental handpiece 1 to the dental handpiece 1.

FIG. 2 is an enlarged view of the vicinity of the distal end portion of the dental handpiece 1 of FIG.

The dental handpiece unit 1 includes a chuck 1a for mounting a cutting instrument 10a, a grip 1b held by an operator, and a motor connection unit 1c for connecting to a motor 10b for rotating the cutting instrument 10a.

The fiberscope section includes a fiberscope main body 2 fixed to the dental handpiece 1 and a light source device 20b that generates light for illuminating the affected area via the light guide cable 20a.

Further, the fiberscope body 2 includes an eyepiece 2e for an operator to view an image, an objective lens 2b for photographing an object, an image guide fiber for connecting the eyepiece 2e and the objective lens 2b, and transmitting an image. A light guide cable 20a for transmitting light from the light source device 20b to the illumination unit 2a through the light guide fiber, and a soft part in which the image guide fiber / light guide fiber / objective lens unit 2b are covered with a resin tube, a stainless steel blade, or the like. 2c, the soft part 2c, the eyepiece part 2e, and the light guide cable 20a are connected to each other, and the operation part 2d for operating the tip of the soft part and the like is provided.

The dental handpiece 1 and the fiberscope body 2 are externally fixed by the holder 3 at a position where the objective lens 2b is in the vicinity of the chuck 1a.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 3 is an external view of a main part of a dental handpiece (with a fiberscope) according to a second embodiment. In FIG. 3, the present invention is mainly composed of a dental handpiece portion 1 and a fiberscope portion.

FIG. 4 is an enlarged view of the vicinity of the distal end portion of the dental handpiece 1 of FIG.

A part of the flexible portion 2c of the first embodiment is externally fixed to the dental handpiece 1 by the holder 3, whereas the configuration of the second embodiment is the tip of the flexible portion 2c. However, it is different in that it is built in the dental handpiece 1 without using the holder 3.

Since other configurations are the same as those of the first embodiment shown in FIGS. 1 and 2, the same members are denoted by the same reference numerals, and detailed description thereof is omitted.

It is a principal part external view of the dental handpiece (with a fiberscope) of the 1st Embodiment of this invention. FIG. 2 is an enlarged view of the vicinity of the distal end portion of the dental handpiece 1 of FIG. 1. It is a principal part external view of the dental handpiece (with a fiberscope) of the 2nd Embodiment of this invention. FIG. 4 is an enlarged view of the vicinity of the distal end portion of the dental handpiece 1 of FIG. 3.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dental handpiece 1a Chuck 1b Grip part 1c Motor connection part 10a Cutting tool etc. (drill file etc.)
DESCRIPTION OF SYMBOLS 10b Motor 2 Fiberscope main body 2a Illumination part 2b Objective lens part 2c Soft part 2d Operation part 2e Eyepiece part 20a Light guide cable 20b Light source device 3 Holder 4 Affected part (dental)

Claims (4)

A dental handpiece that allows the affected area to be visually recognized by cutting a tooth or expanding root canal cleaning by attaching a fiberscope near the chuck. A dental handpiece that has a built-in fiberscope in the vicinity of the chuck so that the affected area can be seen when cutting the tooth or expanding root canal cleaning. The dental handpiece according to claim 1, wherein the dental handpiece can be visually recognized by positioning a fiberscope lens portion below the chuck and externally attaching the fiberscope. The dental handpiece according to claim 2, wherein the dental handpiece can be visually recognized by positioning the lens portion of the fiberscope below the chuck and incorporating the fiberscope.

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