JP2002369828A - Tooth cutting, polishing and cleaning instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the size of the head part of a conventional magnetically driven hand piece as much as possible without causing performance decline. SOLUTION: The structure of a tooth cutting, polishing and cleaning device is provided with a first magnetic field generation means 2 for driving a cutter, a polisher and a cleaner, a second magnetic field generation means 3 supplying a driving magnetic field or a static magnetic field to the first magnetic field generation means 2 and a magnetic field vector conversion and transmission means 1 converting and transmitting a magnetic field vector from the second magnetic field generation means to the first magnetic field generation means 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handpiece for cleaning, polishing, or cutting a tooth that is small in size and has no blind spot and that can perform high torque, with minimal invasion to the tooth periodontal tissue.

[0002]

2. Description of the Related Art There has been a magnetically driven handpiece in which all magnetic field generating means are provided in a head portion. This is because when a high torque is obtained, the head portion becomes large, and a blind spot is formed in a narrow oral cavity. Therefore, most of the professional specifications were mechanical.

[0003]

The problem to be solved is that the conventional magnetically driven handpiece has to increase either drive magnetic field generating means in order to obtain high torque, and as a result, the head portion Was getting bigger and heavier. As a result, it was difficult or impossible to use in a narrow environment such as the oral cavity. Also, it was difficult to withstand autoclave disinfection by inserting it into the head. In the case of the mechanical type, the cleaning element (cutting element, polishing element) has a very rough drive,
Delicate driving was not possible.

[0004]

The main feature of the present invention is to employ magnetic field vector conversion transmission means in order to make the head portion of the handpiece as small as possible and to enable delicate driving. Further, as the magnetic drive, a high torque can be obtained more easily than the conventional one. The therapeutic agent for infectious foci of the present invention employs the following technical means. 1 [Means of claim 1] A tooth cutting and polishing and cleaning apparatus comprises a first magnetic field generating means for driving cutting, polishing and cleaning, and a second magnetic field generating means for supplying a driving magnetic field to the first magnetic field generating means. And the first
Magnetic field vector conversion transmitting means for converting and transmitting a magnetic field vector from the second magnetic field generating means to the magnetic field generating means. 2 [Means of Claim 2] A tooth cutting and polishing apparatus comprises a first magnetic field generating means for cutting, polishing and driving a cleaning element, and a second magnetic field generating means for supplying a static magnetic field to the first magnetic field generating means. And a magnetic field vector conversion transmitting means for converting and transmitting a magnetic field vector of the second magnetic field generating means to the first magnetic field generating means.

[0005]

Action and effect of the present invention 1 [Action and effect of claim 1] A tooth cutting and polishing apparatus comprises a first magnetic field generating means for cutting, polishing and driving a cleaning element, and a first magnetic field generating means for the first magnetic field generating means. A second magnetic field generating means for supplying a driving magnetic field to the
Magnetic field vector conversion transmission means for converting and transmitting the magnetic field vector from the second magnetic field generation means to the magnetic field generation means, so that the same delicate cleaning, cutting, polishing as the magnetic drive type can be performed, and The head can be made very small. 2 [Action and Effect of Claim 1] A tooth cutting and polishing apparatus comprises a first magnetic field generating means for driving cutting, polishing and cleaning, and a second magnetic field for supplying a static magnetic field to the first magnetic field generating means. Generating means and a second magnetic field to the first magnetic field generating means.
Since it is characterized by having a magnetic field vector conversion transmitting means for converting and transmitting the magnetic field vector of the magnetic field generating means, the same delicate cleaning, cutting, polishing as the magnetic drive type can be performed,
The head can be made very small.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a tooth cutting / polishing / cleaning apparatus according to the present invention will be described with reference to the embodiment shown in FIGS. [Construction of Embodiment] In the present invention, a magnetic field vector conversion transmitting means is adopted between the first magnetic field generating means and the second magnetic field generating means, the head portion of the handpiece portion is made as small as possible, and high power is obtained. This is an embodiment.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, a tooth cutting / polishing and cleaning apparatus includes a magnetic field vector conversion transmitting means 1 and a first
It comprises a magnetic field generating means 2 and a second magnetic field generating means 3. Here, the first magnetic field generating means 2 includes a permanent magnet 4. The first magnetic field generating means 2 is attached to a diaphragm 5 which is an elastic body such as rubber, and a cleaning element 6 is provided in the middle. Here, the cleaning element 6 is fixed but detachable chuck (fitting force, screw, etc.).
It may be. The diaphragm 5 is fixed by the head portion 11 of the handpiece.

The head portion 11 is hollow, and the shaft portion 7 in the head of the cleaning element 6 is located there.
A hollow L-shaped pipe-like magnetic field vector conversion transmitting means 1 made of iron, ferrite, or the like is provided on the head portion so as to cover (may be omitted or a chuck structure may be used) without contact. This magnetic field vector conversion transmission means 1
Coil core 9 in coil 8 as second magnetic field generating means
(It is made of ferromagnetic material such as ferrite and iron.) Here, FIG. 2 shows the diaphragm 5 having a dome shape, and FIG. 3 shows the diaphragm 5 having a bellows shape. The bellows of FIG. The diaphragm 5 may be provided side by side or used alone. FIG. 4 shows an example in which a spring is provided along with a bellows. These diaphragms, particularly the bellows type, make it easy to make the head 11 compact and obtain a stroke. Further, the three-dimensional degree of freedom also increases.

Here, the head portion 11 may have a structure 12 that can be easily attached to and detached from the grip portion 10 by a screw or a fitting force. This enables easy disinfection.

More specifically, the power from an external AC power supply (not shown; a main part as an example of a driving means for driving the magnetic field generating means) is supplied to the second magnetic field generating means 3 comprising a coil 8 and a coil core 9. Supplied to Then, an alternating magnetic field (driving magnetic field) is generated in the second magnetic field generating means 3,
In this case, the magnetic field is converted and transmitted at right angles by the magnetic field vector conversion transmitting means 1, and the magnetic field drives the first magnetic field means 2. As a result, the diaphragm 5 vibrates, and the cleaning element 6 vibrates. Of course, the angle and shape may be any as long as the magnetic field vector can be converted and transmitted. The same applies to the material. This is inserted into the oral cavity to remove plaque and the like.

[0011]

The magnetic field vector conversion transmission means 1 makes it possible to reduce the size of the head portion of the handpiece and to obtain a high torque. The oral cavity is very narrow and has many shape restrictions. As an example, when the handpiece is inserted from the buccal side or the occlusal surface when cleaning the upper maxillary molar, if the head is large, operations such as cleaning cannot be performed well. However, there was a contradiction that the driving magnetic field means (coils, etc.) were desired to be large because torque was desired.
This was a major dilemma for dentists.

At present, it has been necessary to employ a mechanical method to solve this problem. On the other hand, in the mechanical type, although the torque is large, it is difficult to drive finely, and even if an excessive pressure is applied, it moves without any problem. On the other hand, in the magnetic drive system of the present invention, the frequency, the drive pressure, the drive stroke, and the like can be easily changed by a known magnetic circuit drive unit, and the pressure feedback from the cleaning element 6 is also known. , It is possible to perform fine cleaning (cutting and polishing are also possible). Also, if the structure shown in FIGS. 1, 2 and 3 is adopted,
It is possible to operate three-dimensionally and to operate according to a three-dimensional curved surface such as a tooth.

Conventionally, however, it has been necessary to provide a magnetic field generating means in the head portion, so that it has been impossible to achieve both size and torque. In the case of mechanical driving, it has been difficult to obtain the above-mentioned fine and detailed driving mode. Therefore, by providing the magnetic field vector conversion transmitting means 1 between the first magnetic field generating means 2 and the second magnetic field generating means 3, the delicate cleaning element 6 (the cutting element and the polishing element can be driven). In addition, a handpiece that can be adjusted from low torque to high torque and has a very small head portion was obtained.

[0014] This is a very great effect as a dentist who is involved in clinical practice, which makes it possible to remove the plaque and remove the plaque and to perform high-precision cutting and polishing in the prevention of caries and periodontal disease of the conventional PMTC. .

[0015]

[Modification] Although the first magnetic field generating means is a permanent magnet and the second magnetic field generating means is a coil, the order may be reversed. The magnetic field generating means may have any structure as long as it can be driven by a magnetic field. The magnetic field vector conversion transmission means 1 may be made of any material as long as it can convert and transmit a magnetic field vector, such as a ferromagnetic material such as iron or ferrite. The angle and shape may be any shape and angle as long as cleaning, cutting, polishing, and the like are easy. Furthermore,
The driving magnetic field for driving the magnetic field generating means may be frequency modulated, may have 1 / f fluctuation, may be a music wave, a signal wave from an audio device, or may be an amplitude modulated wave. In addition, the resonance wavelength of plaque may be detected, and resonance wave driving tuned to the detected wavelength may be employed. Since these driving means can be realized by known means, it will not be described in detail here,
When the driving means is used in the present invention, the effect of improving the plaque removal rate and realizing clean cleaning, cutting and polishing are realized.
In particular, the use of the resonance wave by the resonance wave driving means for plaque and the like, and the removal of the plaque by the optimum frequency driving means for the plaque and the like by the optimum frequency driving means realizes an adequate and sufficient cleaning. Detection of the optimum frequency and resonance wave, resonance, absorption,
The detection may be performed using a detection means based on a pressure change.

The cleaning element may be a cutting element or a polishing element.
In the case of a cutting element, slice cutting and the like can be easily and accurately performed. In the case of a polishing element, polishing can be performed with high precision on the buccal gingival part or the gingival part of the interdental part.

The diaphragm 5 may be of any type as long as it has an elastic component such as rubber or plastic. In the case of the spring 13 alone, any material such as metal, plastic, rubber, etc. may be used according to the gist of the present invention. The other components such as the gripping portion of the handpiece, the head, the cleaning element, and the like may also be made of any material and shape according to the gist of the present invention. Here, the cleaning element may be any type such as a brush type or a PTC chip type as long as the tooth can be cleaned. Here, the shaft portion 7 is free in the above-described embodiment, and the cleaning element or the like operates three-dimensionally. However, the shaft portion 7 may be used only for linear motion with a slide shaft or the like. Of course, the ratio between the three-dimensional motion and the linear motion may be arbitrarily set.

The attachment / detachment means 12 is realized by screws or fittings,
The head may be replaced. Further, the attaching / detaching means 12 may be provided behind the second magnetic field generating means (the head side is defined as the front) to facilitate maintenance.

The driving means requires means for outputting various waveforms (triangular wave, rectangular wave, square wave, burst wave, sawtooth wave, sine wave, etc.) such as a pulse generator, an arbitrary waveform generator, etc., such as impedance matching and power amplification. If so,
What is necessary is just to supply to a magnetic field generation means. In this case, driving with a single wavelength or driving with multiple wavelengths may be performed. The driving means for driving the magnetic field generating means may be any means (circuit) according to the gist of the present invention, such that the pressure feedback means may be realized by the back electromotive force detecting means. Measurement and control of the position, the movement speed, the acceleration, the cycle, the amplitude, the pressure, the torque, and the like of the cleaning element and the like may be performed by the driving unit, the detection unit, and the like.

The handpiece may be provided with water injection and suction functions. A chemical solution may be injected instead of water. The water injection may cool the magnetic field generating means.
The magnetic field generating means may be cooled by using a cooling means such as a Peltier element. Output increases due to cooling.

Using the magnetic field generating means as an index, the known three-dimensional position detecting means of the handpiece detected by the known three-dimensional position detecting means is used to detect the three-dimensional positions of the cutting element, the cleaning element and the polishing element. (With Shape Data) and display.

A plurality of magnetic field generating means may be provided. In particular, if the second magnetic field generating means is formed from a plurality of coils in series,
High torque and stroke can be obtained even at high frequencies. Further, the driving magnetic field means, that is, the first magnetic field generating means and the second magnetic field generating means in this embodiment may be a magnetic circuit composed of a plurality of each.

The sound at the time of operation depends on the human audible range and the perceived sound pressure. However, if the noise sensing area (in terms of frequency and sound pressure) is reduced, it can be driven quietly.
You can also add audio waves to your favorite songs,
If driven by waves, it is comfortable even if the sound pressure is high.
Further, a known anti-phase silencer may be used.

The above embodiments or modified examples may be implemented alone or in combination. It may be used for other purposes.

[0025]

[Brief description of the drawings]

FIG. 1 shows an example of a tooth cutting and polishing apparatus. Right and left figure is 9
0 ° viewed from a different direction

FIG. 2 is an example of a tooth-cutting polishing and cleaning device having a dome-shaped diaphragm. The right and left figures are viewed from a direction different from 90 °

FIG. 3 is an example of a tooth cutting polishing and cleaning device having a bellows type diaphragm. In the right and left views, the elasticity may be controlled by inserting an elastic body such as a spring into the diaphragm as viewed from a direction different from 90 °.

FIG. 4 is an example in which an elastic body such as a spring is used for a diaphragm.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Example of a magnetic field vector conversion transmission means 2 Example of a 1st magnetic field generation means 3 Example of a 2nd magnetic field generation means 4 Example of a permanent magnet 5 Example of a diaphragm 6 Example of a cleaning element (similarly to a cutting and polishing element) 7 Shaft ( An example of a coil 9 An example of a coil core 10 An example of a gripping part (of a handpiece) 11 An example of a head part (of a handpiece) 12 An example of an attaching / detaching means (necessary) 13 Spring An example of an elastic body such as.

Claims (2)

[Claims] A first magnetic field generating means for driving a cutting, polishing and cleaning element; a second magnetic field generating means for supplying a driving magnetic field to the first magnetic field generating means; And a magnetic field vector conversion transmitting means for converting and transmitting a magnetic field vector from the second magnetic field generating means to the first magnetic field generating means. 2. A tooth cutting / polishing / cleaning apparatus comprises: first magnetic field generating means for driving cutting, polishing and cleaning elements; second magnetic field generating means for supplying a static magnetic field to the first magnetic field generating means; And a magnetic field vector conversion transmitting means for converting and transmitting the magnetic field vector of the second magnetic field generating means to the first magnetic field generating means.