JPS6139455Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a root canal cutting file for manual use, which is characterized in that the handle structure has a special shape. In files such as file and H file, which have a nearly cylindrical handle attached to a cutting blade, flat parts are formed on the front and back surfaces of the lower part of the handle, and the upper part of the handle is cylindrical and the lower part is flat. The present invention relates to a root canal cutting file characterized by having the following configuration.

Conventional files of this type have a handle 1 that is approximately cylindrical in shape with a constricted center as shown in FIG. Because of its shape, it is difficult to pick up with your fingertips, and if you use it for a long time, you may get tired, and the handle makes it impossible to give direction. Therefore, it cannot be used effectively when inspecting the bending direction of the root canal, and the contact area for fingers is small, so
It was difficult to obtain a lateral pressing force, and furthermore, there were drawbacks such as the inability to efficiently pull the file upward.

The file according to the present invention is a technology developed in view of the conventional drawbacks, and in particular, the upper part of the handle is cylindrical and the lower part is flat, which makes it easier to pick up the file. This invention relates to a completely new root canal cutting file that makes it possible to impart directionality to the file.

To specifically explain one embodiment of the file according to the present invention using figures, in FIGS. 2 and 3, 3.
is a K-file type cutting blade, the base of which has a constriction at the center part a, the upper part b has a substantially cylindrical shape, and the front and back surfaces of the lower part c are cut into flat shapes. A single handle 4 formed in is integrally attached. Moreover, the area between the cylindrical upper part b and the flat lower part c of the handle 4 is configured to be gently and gradually deformed.

In the above embodiment, the case has been described in which the handle 4 is attached to the K-file type cutting blade 3, but the H-file type cutting blade can also be constructed by attaching a completely similar handle.

As mentioned above, the file according to the present invention is constructed by attaching an integrated handle to the cutting blade, which has a substantially cylindrical upper part and a flat lower part, and is gently deformed between the two. 1) The handle can be easily and stably pinched, (2) the contact area with the fingers is large, so a large and stable lateral pressing force can be obtained, and (3) the upper part of the handle is cylindrical. Because there is
The file can also be rotated by holding this part, and (4) the flat part at the bottom gives direction to the file, which helps when inspecting the bending direction of the root canal, etc. (5) By touching the flat part at the bottom with your fingertips, you can increase the pulling force, thus making it easier to pull up and cut.
(6) When holding the handle, the circular outer wall does not dig into the fingertips as in the conventional case, so there is no risk of finger pain or fatigue for doctors who use the file for long periods of time. , (7) Since the handle is easy to grasp, it is possible to apply a large force not only in a specific direction but in all directions. (8) By using this kind of specially shaped handle for the file, it is possible to A reamer that uses the same shaped handle as it is can be judged at a glance or by the feel of the reamer when pinched with the fingertips, so there is no possibility of confusing the two. It is.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a conventional file, and FIGS. 2 and 3 are explanatory diagrams of the file of the present application. 1 and 4 are the handles, 2 and 3 are the cutting blades, a is the center of the handle, b is the handle, and c is the lower part of the handle.

Claims (1)

[Scope of utility model registration request] K file, which can cut the root canal of the tooth.
In files such as H-files, in which a substantially cylindrical integrated handle is attached to a cutting blade, flat parts are formed on the front and back surfaces of the lower part of the handle, and the upper part of the handle is cylindrical and the lower part is flat. A root canal cutting file characterized in that the file is configured such that the cylindrical upper part and the flat lower part are gently and gradually deformed.