JP2002369829A - Tooth cutting, polishing and cleaning device - 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: A tooth cutting, polishing and cleaning device is composed of a magnetic field vector conversion and transmission means 1, a first magnetic field generation means 2 and a second magnetic field generation means 3 and the first magnetic field generation means 2 is composed of a permanent magnet 4. The first magnetic field generation means 2 is attached to a diaphragm 5 which is an elastic body such as rubber and a cleaner 6 is installed in the middle thereof. The magnetic field vector conversion and transmission means 1 is in contact with a coil core 9 provided in a coil 8 as the second magnetic field generation means.

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 teeth with minimal invasion of the periodontal tissue of the teeth and without blind spots.

[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. Thus, almost all 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]

According to the present invention, in order to make the head portion of the handpiece as small as possible and to enable delicate driving, the second magnetic field generating means is housed in the grip portion and the driving magnetic field is controlled to a predetermined value. It is provided with a cleaning element movement supporting means for converting to a movement mode and reliably capturing teeth having a complicated curved surface. As a result, the head portion can be miniaturized, high torque can be obtained, and delicate and minimally invasive movement can be obtained. In addition, it is possible to drive the cleaning element or the like in an optimal motion mode with respect to the teeth. The tooth cutting / polishing / cleaning apparatus of the present invention employs the following technical means. According to a first aspect of the present invention, there is provided a tooth cutting / polishing / cleaning apparatus for supplying a driving magnetic field to a first magnetic field generating means for driving cutting, polishing, and a cleaning element. Second magnetic field generating means, and a cleaning element movement supporting means for converting a force for operating the cleaning element into a predetermined movement by a driving force from the driving magnetic field. 2 [Means of Claim 2] The tooth cutting and polishing and cleaning apparatus of Claim 2 comprises a first magnetic field generating means for driving cutting, polishing and cleaning, and a static magnetic field for supplying the first magnetic field to the first magnetic field generating means. (2) It comprises a magnetic field generating means and the cleaning element movement supporting means. 3 [Means of Claim 3] In the tooth cutting / polishing and cleaning apparatus of Claim 3, the cleaning element has a pendulum-like motion to the cleaning element movement supporting means for converting a force for operating the cleaning element by a driving force from a driving magnetic field. For supporting the pendulum movement. 4 [Means of Claim 4] The tooth cutting and polishing and cleaning apparatus according to Claim 4 is a pendulum which applies a force for operating the cleaning element to a cleaning element movement supporting means for converting a force for operating the cleaning element by a driving force from a driving magnetic field. There is provided a pendulum elliptic motion support means for performing an elliptical motion.

[0005]

[Effects and Effects of the Invention] 1 [Operations and effects of the first aspect] The tooth cutting / polishing / cleaning apparatus of the first aspect includes a first magnetic field generating means for cutting, polishing, and driving a cleaning element, and A second magnetic field generating means for supplying a driving magnetic field to one magnetic field generating means, and a cleaning element movement supporting means for converting a force for operating the cleaning element into a predetermined movement by a driving force from the driving magnetic field. Since it is provided, the same delicate cleaning, cutting, and polishing as those of the magnetic drive type can be performed, and the head portion can be made very small. 2 [Function and Effect of Claim 2] The tooth cutting and polishing and cleaning apparatus of claim 2 supplies first magnetic field generating means for cutting, polishing and driving the cleaning element, and supplies a static magnetic field to the first magnetic field generating means. Since the second magnetic field generating means and the cleaning element movement supporting means are provided, the same delicate cleaning, cutting, and polishing as those of the magnetic drive type can be performed, and
The head can be made very small. 3 [Operation and Effect of Claim 3] In the tooth cutting and polishing cleaning device according to claim 3, the cleaning element is pendulum-like movement to cleaning element movement supporting means for converting a force for operating the cleaning element by a driving force from a driving magnetic field. Because of the provision of the pendulum motion support means for cleaning, it is excellent for cleaning the cervical part and the vicinity of the gingival margin. 4 [Operation and Effect of Claim 4] In the tooth cutting and polishing cleaning device of claim 4, the force for operating the cleaning element is provided to the cleaning element movement supporting means for converting the force for operating the cleaning element by the driving force from the driving magnetic field. Is provided with a pendulum elliptic motion support means for making the pendulum elliptical motion, so that an excellent cleaning effect can be obtained on the concave surface.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention employs a first magnetic field generating means, a second magnetic field generating means, and a cleaning element movement supporting means to minimize the head portion of a handpiece portion and obtain high power. In addition, it is an embodiment to obtain a predetermined exercise mode.

[0007]

In the first embodiment, the magnetic field vector conversion transmitting means 1 is used, and in addition to the linear movement as the cleaning element movement supporting means, the linear movement corresponds to the tooth curved surface due to the manual directional movement of the gripper. An example employing such a cleaning element movement supporting means will be disclosed.

In FIG. 1, the tooth cutting and polishing apparatus comprises a magnetic field vector conversion transmitting means 1, a first magnetic field generating means 2, and a second magnetic field generating means 3 as main constituent means.
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 may be a detachable chuck (an engaging force, a screw, or the like). The diaphragm 5 is fixed by the head portion 11 of the handpiece.

The interior of the head portion 11 is hollow, and just covers the shaft portion 7 (which may be omitted or may be a chuck structure) in the head of the cleaning element without contact. A magnetic field vector conversion transmitting means 1 such as a hollow L-shaped pipe made of iron, ferrite, or the like is installed in the head portion. This magnetic field vector conversion transmission means 1
It is in contact with a coil core 9 (made of a ferromagnetic material such as ferrite or iron) in a coil 8 as a magnetic field generating means.

Here, the head portion 11 may have a structure 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, electric power from an external AC power supply (not shown) is supplied to the second magnetic field generating means 3 including the coil 8 and the coil core 9. Then, an alternating magnetic field is generated in the second magnetic field generating means 3, and in the case of this form, 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 vibrates, and the cleaning element 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.

[0012]

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, drive pressure, drive stroke, and the like can be easily changed by a known magnetic circuit drive unit, and pressure feedback from the cleaning element is also applied to the known magnetic circuit drive unit. It is possible to perform fine cleaning (cutting and polishing are also possible). FIG.
By adopting the above structure, it is possible for the cleaning element to operate three-dimensionally and to operate in conformity with a three-dimensional curved surface such as a tooth.

However, conventionally, it was impossible to provide both the size and the torque because the magnetic field generating means had to be included in the head portion. 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, a delicate cleaning element (a cutting element and a polishing element can be driven) is obtained. Further, a handpiece which can be adjusted from low torque to high torque and has an extremely small head portion can be obtained.

[0015] This is a very significant effect as a dentist involved in clinical practice, which makes it possible to remove plaque and to perform high-precision cutting and polishing in the prevention of caries and periodontal disease of conventional PMTC. .

[0016]

Second Embodiment An example in which the cleaning element movement supporting means is made to perform a pendulum movement or a pendulum elliptical movement will be disclosed.

In FIG. 4, the tooth cutting / polishing and cleaning apparatus employs a pendulum movement supporting means as a main constituent means.

In FIG. 4, the tooth cutting and polishing apparatus comprises a first magnetic field generating means 2 and a second magnetic field generating means 3 as main constituent means. Here, the first magnetic field generating means 2
It consists of a permanent magnet 4. And 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 of the diaphragm. Here, the cleaning element 6 is fixed, but may be a detachable chuck (an engaging force, a screw, or the like). The diaphragm 5 is fixed by the head portion 11 of the handpiece.

The inside of the head portion 11 is hollow, and is attached to the shaft portion 7 (may be omitted or may have a chuck structure) in the head of the cleaning element. The magnetic field generating means 2 includes a second magnetic field generating means 3
The coil core 9 (made of ferromagnetic material such as ferrite or iron) in the coil 8 as shown in FIG. Here, the N pole is on the three side and the S pole is the opposite.
(This may be reversed.)

Here, the head portion 11 may have a structure that can be easily attached to and detached from the grip portion 10 by a screw or a fitting force. If this is adopted, disinfection becomes easy.

[0021]

[Operation of the embodiment]

More specifically, electric power from an external AC power supply (not shown) is supplied to the second magnetic field generating means 3 including the coil 8 and the coil core 9. Then, an alternating magnetic field is generated in the second magnetic field generating means 3, and the magnetic field is changed to the first magnetic field.
The magnetic field means 2 is driven. As a result, the diaphragm vibrates, and the cleaning element vibrates. At this time, the shaft 7 of the cleaning element
Performs a pendulum motion with a portion in contact with the diaphragm 5 as a fulcrum. This is the pendulum motion support means.

This is inserted into the oral cavity to remove plaque and the like. At this time, the dome-shaped diaphragm 5 performs a pendulum motion corresponding to the tooth surface three-dimensionally. Of course, the shape and material of the diaphragm may take any form in accordance with the gist of the present invention. As an example, a bellows type is used.

Here, as shown in FIG. 5, the tooth cutting / polishing / cleaning apparatus may employ a pendulum elliptic motion support means as a main constituent means. In this case, a pendulum elliptical motion in which the pendulum motion and the elliptical motion are mixed is performed. This is the pendulum elliptic motion support means. The difference between the pendulum motion support means and the pendulum elliptical motion support means is the difference in the relative positional relationship between the first magnetic field generation means and the second magnetic field generation means.

[0025]

According to the present invention, since the pendulum movement corresponding to the three-dimensional surface is performed on the tooth surface, it is excellent for cleaning the cervical part and the like which are difficult to clean by linear movement. Pendulum elliptical motion is more suitable for concave parts.

[0026]

[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 transmitting 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 drive magnetic field may be modulated by several wave numbers, may be 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 drive circuits can be realized by known circuits, the details will not be described here, but the effect of using the drive circuit in the present invention is to improve the plaque removal rate,
Realizes clean cleaning, cutting and polishing. 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. The detection of the optimum frequency or the resonance wave may be performed by using a detection unit based on the resonance, absorption, or pressure change of the frequency. Furthermore, AC power from an external AC power supply for driving may be added to the coil, and electric power or magnetic force may be induced in the magnetic field generating means by an electromagnetic wave or a dynamic magnetic field generated from the coil. In this case, the magnetic field generating means is cordless and operability is improved. Needless to say, a driving AC power supply may be built in the grip portion or the like, or a battery drive may be used.

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 outer shape and the like may be of any shape in accordance with the gist of the present invention. As an example, a form as shown in FIG. 7 may be used. In this case, the size can be easily reduced. Further, as shown in FIG. 7, a damper (buffer) 14 is placed between the first magnetic field generating means and the magnetic field vector converting means or between the first magnetic field generating means and the second magnetic field generating means to prevent collision,
The movement of the cleaning element may be adjusted such as damping. Furthermore, an elastic body such as a spring may be inserted into the diaphragm to control the elasticity. Of course, a spring may be employed as the diaphragm.

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

[0030]

[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.

FIG. 3 is an example of a tooth cutting polishing and cleaning device having a bellows type diaphragm.

FIG. 4 is an example of a tooth cutting and polishing apparatus in which a cleaning element, a cutting element, and a polishing element operate like a pendulum.

FIG. 5 is an example of a tooth cutting and polishing cleaning apparatus in which a cleaning element, a cutting element, and a polishing element operate in a pendulum elliptical shape. The accuracy of the first magnetic field generating means is arbitrary.

FIG. 6 shows an example in which an elastic body such as a spring may be placed in a diaphragm to control elasticity. This example is a bellows diaphragm.

FIG. 7 shows an example of a tooth cutting / polishing / cleaning apparatus in a modified form.
(A damper may be inserted.)

[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 (Auxiliary elastic body) 14 Damper (buffer)

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) A61C 17/02 A61C 17/02 J

Claims (4)

[Claims] A first magnetic field generating means for driving a cutting, polishing and cleaning element, and a second magnetic field generating means for supplying a driving magnetic field to the first magnetic field generating means; And a cleaning element movement supporting means for converting a force for operating the cleaning element into a predetermined movement by a driving force from the driving magnetic field. 2. A tooth cutting / polishing / cleaning apparatus includes a first magnetic field generating means for driving cutting, polishing, and a cleaning element, a second magnetic field generating means for supplying a static magnetic field to the first magnetic field generating means, And a cleaning device for supporting the movement of the cleaning element. 3. The cleaning device for tooth cutting and polishing according to claim 1 or 2, wherein the cleaning element has a pendulum-like motion by means of a cleaning element movement supporting means for converting a force for operating the cleaning element by a driving force from a driving magnetic field. A tooth cutting and polishing cleaning device comprising a pendulum movement support means for performing a cutting operation. 4. The cleaning device for tooth cutting and polishing according to claim 1 or 2, wherein the cleaning element movement supporting means for converting the force for operating the cleaning element by the driving force from the driving magnetic field provides the force for operating the cleaning element. A tooth cutting and polishing cleaning device comprising a pendulum elliptical motion support means for making a pendulum elliptical motion.