JPS5845685Y2 - Dental handpiece for root canal treatment - Google Patents

Description

[Detailed explanation of the invention] Up until now, there have been two methods for enlarging and filling root canals: using a hand-held reamer and using a motor to drive a reamer attached to a band piece. The latter has the advantage of being able to freely change the rotational speed and direction depending on the operator's control and providing a so-called finger touch, but has the disadvantage of being forced to work inside the patient's mouth; Although it has the advantage of being able to perform automatic operations outside the oral cavity, it has the disadvantage that it is difficult to obtain the necessary low-speed rotation and also that so-called finger touch cannot be obtained.

This proposal was made in view of the conventional situation, and will be explained below with reference to the embodiments shown in the drawings. 1 is a band piece main body, and the grip handle 2 is placed in the middle with a front grip part 2a.
and a rear gripping portion 2b.

A hand-cranked bundle 4 having an outer circumference larger than the outer circumferences of both the gripping parts 2a and 2b is integrally fixed to the portion of the drive shaft 3 exposed at the separation interval.

Further, the base end portion of the front gripping portion 2a and the distal end portion of the rear gripping portion 2b are connected by a stay 5.

In addition, in the drawing, 6 is a head part, 7 is a reamer, 8 a, 8
b is a bearing, 9 is a bearing holding screw, 10 is an intermediate gear mechanism, 1
1 is the intermediate axis.

Now, in order to perform root canal treatment using the proposed band piece, the first step is to
As shown in the figure, the gripping handle 2 consisting of the front gripping part 2a and the rear gripping part 2b is gripped with one hand, and the toel finger is applied to and surrounded by the bundle 4.

The direction of rotation is free, either in one direction or alternately in forward and reverse directions.

Then, the drive shaft 4 integrated with the bundle 4 rotates in the rotation direction, and the rotation is transmitted to the intermediate shaft 11 via the intermediate gear mechanism 20, and is attached to a tool shaft drive sheath (not shown) in the head section 6. Turn reamer 7.

At this time, the rear gripping part 2b is connected to the front gripping part 2a by the stay 5 and is integrated, so that it will not idle or separate by itself.

The present invention is as described above, and since it is a band piece, it is possible to work outside the patient's oral cavity, and the work is done by appropriately rotating the bundle 4 with the fingers holding it (that is, with one hand) without using a motor drive. This allows the patient to rotate the armature in the desired direction and speed according to the actual treatment situation, providing what is called a finger touch.

Therefore, it is truly advantageous in that it overcomes the drawbacks of the hand-held reamer or band piece motor drive system mentioned above.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view showing the state of use, and FIG. 2 is a longitudinal sectional side view of the main part.

Claims (1)

[Claims for Utility Model Registration] (a) The gripping handle 2 of the band piece body 1 is divided into a front gripping part 2a and a rear gripping part 2b with an interval in the middle, and a drive shaft is exposed at the dividing interval. Hand-wrapped bundle 4 in 3 parts
are fixed together, and the proximal end of the front gripping part 2a and the rear gripping part 2b are fixed together.
A dental band piece for root canal treatment, characterized in that the distal ends of the band pieces are connected by a stay 5. (b) The dental band piece for root canal treatment according to claim 1, which is a registered utility model, in which the hand circumference bundle 4 has an outer circumference larger than the outer circumferences of both the front and rear gripping parts 2a, 2b.