JP2001079021A - Connecting mechanism and ultrasonic medical treatment instrument adopting the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify and facilitate the attaching of a chip to an ultrasonic vibrator, and improve work efficiency. SOLUTION: This connecting mechanism comprises a hand piece section and a chip section 3. In this case, for the hand piece section, an ultrasonic vibrator section 1, at the tip end section of which, a female thread 1a having a plurality of ridges is formed, is built in. Then, the chip section 3 has a male thread 3a having a plurality of ridges, which are screwed with the female thread 1a, at the tip end section, and also, is detachably screwed with the ultrasonic vibrator section 1 in the hand piece. The ultrasonic vibrator 1 side is formed into recess sections 1a and protruding sections 1b in the circumferential direction with specified intervals, and also, the recess sections 1a and the protruding sections 1b extend in the axial direction, and a female thread is formed on the protruding sections 1a. The chip 3 side has protruding sections 3a and recess sections 3b which engage with the recess sections and the protruding sections on the ultrasonic vibrator 1 side, and extend. Then, on the protruding sections 3a, a male thread 3a is formed. The recess sections 3b on the chip 3 side are positioned to the protruding sections 1a on the ultrasonic vibrator 1 side, and are inserted in the axial direction. Then, both sides are rotated by the length of both protruding sections 1a and 3a in the circumferential direction, and all of the plurality of the ridges of the female thread 1a and the male thread 3a, which are formed on the protruding sections, are screwed at the same time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous canning mechanism, and more particularly, to an application of a dental ultrasonic treatment device with an ultrasonic vibrator used for performing scaling, root planing, etc. in dental treatment. It relates to a suitable coupling mechanism.

[0002]

2. Description of the Related Art In dental treatment, in order to remove tartar, flatten a root canal (Root Plannig), etc., recently,
Generally, a handpiece using an ultrasonic vibrator is used. FIG. 2 is a cross-sectional view of an essential part for explaining an example of a known ultrasonic scaler (scaler) as an example of a handpiece using an ultrasonic oscillator. Is a handpiece housing containing the ultrasonic vibrator 1. The ultrasonic vibrator 1 is housed in the handpiece housing 2, and the ultrasonic vibrator 1 has a chip 3.
Is detachably mounted, and the tip 3 is ultrasonically vibrated to remove tartar.

[0003]

In the case of attaching the tip 3 to the ultrasonic vibrator 1 or exchanging the tip 3 in the above-mentioned dental ultrasonic treatment device, the handpiece 2 of the ultrasonic scaler is conventionally used. When the tip 3 is screwed into the ultrasonic vibrator 1 built in the chip, the chip 3 and the ultrasonic vibrator 1 (accordingly, the handpiece 2) are connected, and the vibration of the ultrasonic vibrator 1 is transmitted to the chip 3, Thus, dental treatment can be performed, but since the method of attaching the tip 3 to the ultrasonic vibrator 1 is a screw type, it is troublesome and time-consuming.

[0004] The present invention has been made in view of the above-mentioned circumstances, and in a dental ultrasonic treatment device, the attachment of a tip to an ultrasonic vibrator has been simplified and facilitated to improve work efficiency. However, the present invention is not limited to a dental ultrasonic treatment device, and is generally effective even when applied between two members to be screw-connected.

[0005]

According to the present invention, there is provided a first member having a female (or male) screw having a plurality of threads at a distal end thereof, and a female (or male) screw being screwed at the distal end. A second member having a male screw (or a female) having a plurality of threads to be combined, wherein the first member is formed with irregularities at predetermined intervals in the circumferential direction, and the irregularities extend in the axial direction. , The female (or male) screw is formed on the convex portion, and the second member has a concave and convex portion that extends by engaging with the concave and convex portions of the first member, and the male ( Or female) screw, and is inserted in the axial direction in alignment with the concave portion (or convex portion) of the first member and the convex portion (or concave portion) of the second member, and then in the circumferential direction. Rotate by the circumferential length of the two convex portions and simultaneously screw all the plurality of female and male threads formed on the convex portions simultaneously. Is obtained is characterized in that so.

Further, the present invention provides a handpiece section having a built-in ultrasonic vibrator section in which a female (or male) screw having a plurality of threads is formed at the distal end, and the female (or male) at the distal end.
A tip portion having a male (or female) screw having a plurality of screw threads to be screwed with the screw and being detachably screwed to the ultrasonic vibrator portion in the handpiece; The vibrator side is formed with irregularities at predetermined intervals in the circumferential direction, the irregularities extend in the axial direction, the female (or male) screw is formed on the convexities, and the handpiece is the tip side. Has irregularities that extend by engaging with the irregularities on the side,
The male (or female) screw is formed on the convex portion, and the convex portion (or concave portion) on the ultrasonic transducer side and the concave portion (or convex portion) on the chip side are aligned and inserted in the axial direction. And then
The present invention is characterized in that all the plurality of female and male threads formed on the projection are simultaneously screwed together by rotating the projection in the circumferential direction by the circumferential length of the projection.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic diagram of a main portion for explaining an embodiment in which a connecting mechanism according to the present invention is applied to a dental ultrasonic treatment instrument. The vibrator part 3 is a chip, and the ultrasonic vibrator part 1 is housed in a handpiece of an ultrasonic treatment tool (not shown) as shown in FIG. The ultrasonic vibrator unit 1 has a female screw 1a having a plurality of screw threads at the distal end, and the tip 3 has the female screw 1a at the distal end (the side joined to the ultrasonic vibrator 1). Male screw 3a having a plurality of screw threads to be screwed into
And is detachably screwed to the ultrasonic vibrator unit 1. The ultrasonic vibrator 1 side is formed with irregularities at predetermined intervals in the circumferential direction, the irregularities extend in the axial direction, the female screw 1a is formed on the convex portion, and the ultrasonic wave on the chip 3 side is the ultrasonic wave. The male screw 3a is formed on the convex portion by engaging and extending with the concave and convex portion on the vibrator 1 side, and the convex portion (or concave portion) on the ultrasonic vibrator side and the chip 3 side The concave portion (or convex portion) is aligned, the tip 3 is inserted in the axial direction, and then a detachable tool such as a wrench (not shown) is inserted in the circumferential direction by the length of the convex portion in the circumferential direction. In the case where it is engaged with the step 3c of FIG. 3 and divided into four by irregularities as in the illustrated example, the screw thread of the female screw 1a and the male screw 3a formed on the convex part is rotated by し て turn. At the same time, screw it in, tighten it and fix it.

FIG. 1 illustrates an example in which the connecting mechanism according to the present invention is applied to dental ultrasonic treatment. However, the present invention is not limited to the above embodiment.
For example, contrary to the above embodiment, a male screw portion may be formed on the ultrasonic vibrator 1 side and a male screw portion may be formed on the chip 3 side. The present invention is not limited to this. In general, it is easy to form the female screw portion on one member of the two members to be screw-coupled and the male screw portion on the other member. Will understand.

[0009]

As is apparent from the above invention, according to the present invention, the unevenness of the tip of one member, for example, the tip member, is combined with the other member, for example, the tip of the ultrasonic vibrator. (The screwed part and the screwless part are aligned) and inserted in the axial direction (for example, all the screws of the chip are inserted, for example, up to the front end face of the ultrasonic transducer), and then A wrench or the like is used to rotate a predetermined angle (for example, 1/4 turn), and all the screws are screwed together. Therefore, the first member, for example, the tip member and the other member, for example, ultrasonic wave Without weakening the fastening force with the vibrator, it is very easy to connect them, for example, to attach / detach the chip to / from the ultrasonic vibrator.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a main part for describing an embodiment of a dental ultrasonic treatment device according to the present invention.

FIG. 2 is a sectional view of a main part for explaining an example of a known ultrasonic scaler as an example of a handpiece using an ultrasonic transducer.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Ultrasonic vibrator, 1a ... Convex part (male screw part), 1b ... Concave part, 2 ... Handpiece housing, 3 ... Tip, 3a ...
Convex part (male thread part), 3b ... concave part, 3c ... wrench engaging part.

Claims (2)

[Claims] 1. A first member having a female (or male) screw having a plurality of threads at a distal end portion, and a plurality of threads at the distal end portion to be screwed with the female (or male) screw. A second member having a male screw (or female), wherein the first member is formed with irregularities at predetermined intervals in a circumferential direction, the irregularities extend in the axial direction, and the female ( Or male)
A screw is formed, the second member has a projection and a depression extending and engaging with the unevenness of the first member, and the male (or female) screw is formed in the projection; The concave part (or convex part) of the first member is aligned with the convex part (or concave part) of the second member, and inserted in the axial direction. A coupling mechanism, wherein all the plurality of female threads and male threads formed on the convex portion are screwed together at the same time. 2. A handpiece section having a built-in ultrasonic vibrator section formed with a female (or male) screw having a plurality of screw threads at a distal end portion, and screwed into the female (or male) screw at a distal end portion. A male (or female) screw having a plurality of screw threads, and a tip portion removably screwed to the ultrasonic vibrator portion in the handpiece. ,
The concave and convex portions are formed in the circumferential direction at predetermined intervals, and the concave and convex portions extend in the axial direction, and the female (or male) screws are formed in the convex portions, and the chip side has concave and convex portions on the ultrasonic vibrator side. The male (or female) screw is formed in the convex portion, and the concave portion (or convex portion) on the tip side is connected to the convex portion (or convex portion) on the ultrasonic vibrator side. Or recess)
And then insert in the axial direction, and then rotate in the circumferential direction by the circumferential length of the two convex portions, and simultaneously screw all the plurality of female and male threads formed on the convex portions. An ultrasonic treatment device characterized in that the ultrasonic treatment device is adapted to be used.