JPS6229053B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a device for gripping and manipulating hand instruments for dental treatment.

``Prior Art'' Conventionally, various hand instruments have been used in dental treatment, but all of these hand instruments are operated by adjusting the force with which they are held. There is a risk of damaging the inner mucous membrane, and for this reason, it is necessary to carefully control the amount of force used when operating hand instruments.

In particular, when handling bone chisels or bone files, skill was required to adjust the amount of force.

In addition, when extracting a tooth using a Hebel, as shown in the second diagram, the tip of the Hebel a should be inserted into the gingival sulcus d between the tooth b and the gum c, and the periodontal ligament should be peeled off from the tooth root by pushing it in while moving it manually. Therefore, if you apply too much hand force to the Hebel, you may not only excessively damage the gingiva and periodontal ligament, but also damage the buccal mucosa and oral floor mucosa when handling the Hebel tip in the oral cavity, so handle carefully. However, it is not easy to perform tooth extraction without causing pain to the patient. For this reason, extreme care was required in the operation of the Hebel, making it difficult to speed up the treatment, but no suitable means to improve this had hitherto been realized.

In addition, when a metal crown such as a single crown or a bridge denture is attached to a tooth, when performing a prosthesis try-in operation to test whether the metal crown is properly attached, To remove a metal crown, hook the lower margin of the metal crown with a remover with a sickle-shaped tip. If the remover is not removed, it will not only deform the margin, but also cause damage to the gums, etc. Therefore, it was necessary to operate the remover carefully.

Also, when attaching cement to a metal crown and attaching it to a tooth, a crown setter is placed between the metal crown and the opposing tooth in the jaw to temporarily bring the upper and lower teeth into occlusion. If the amount of cement is not sufficient, the excess cement may not completely leak out and be removed, and there is a risk that proper attachment may not be achieved.

[Problems to be Solved by the Invention] As mentioned above, conventional dental hand instruments require strong force to handle, and there is a problem in that it is not easy to adjust the force minutely.

In addition, there is a known device in which the rotating body of a compressed air turbine is configured to be unbalanced and vibrated, such as the tartar removal device described in Japanese Patent Application Laid-open No. 57-196971. The vibrations generated by the scraper are transmitted directly to the scraper, and the force of this vibration is directly transmitted to the gums, potentially damaging them.Furthermore, the vibrations have extremely high frequencies caused by the high-speed rotation of the turbine, so they cannot be used to remove tartar. However, it cannot be used for manual dexterity such as bone chisel, bone file, remover, crown setter, and Hebel.

Therefore, the present invention provides a holder for dental hand instruments, which is ideal for hand instruments such as bone chisels, bone files, removers, crown setters, Hebels, etc., and which allows minute force adjustments and is extremely easy to handle. This is what we provide.

[Means for Solving the Problems] In order to solve the problems of the previous stage, the dental hand instrument holder of the present invention is provided with an electromagnetic coil and a movable iron core in the upper part of the gripping housing, and a vibrating core in the lower part of the housing. At the same time as inserting the shaft rod, a spring is attached to this vibration shaft rod, and the tip of the iron core shaft provided on the movable iron core is opposed to the top of the vibration shaft rod, and a dental hand is placed on the tip of the vibration shaft rod where the instrument is attached. It is configured to be used to attach a device for use.

[Operation] The electromagnetic coil and the movable iron core electrically generate low-frequency vibrations, and this vibration is transmitted from the tip of the iron core shaft of the movable iron to the vibrating rod opposite to it, and the vibration is transmitted to the tip of the vibrating rod. vibrate the dental hand instrument attached to the instrument mounting section.

At this time, the tip of the iron core shaft of the movable iron core only faces the top of the vibrating shaft rod, but is not connected to the top of the vibrating shaft rod, and since a spring is attached to this vibrating shaft rod, the violent vibration of the movable iron core is caused. The vibrating force of the movable iron core is not directly transmitted to the hand instrument at the tip of the vibrating rod, so the force of the vibration of the movable iron core does not damage the gums.

In addition, by generating vibration electrically using an electromagnetic coil and a movable iron core, the operation can be as simple as turning a switch on and off.
It is possible to apply minute amounts of force, making handling and treatment extremely easy.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a sectional view of an example of the dental hand instrument holder of the present invention, FIG. 3 shows an example of a curved Hebel to be attached to the holder shown in FIG. 1, and FIG. Similarly, an example of the remover is shown, FIG. 5 is a similar example of the crown setter, and FIG. 6 is a modified example of the remover.
Further, FIG. 7 shows another example of the holder shown in FIG. 2.

In FIG. 1, 1 is a grip housing made of a suitable material such as stainless steel or plastic.
A vibration generator 2 and a vibration shaft 3 are installed inside.
The vibration generator 2 is attached to a support wall 4 provided on the inner surface of the grip housing 1, and generates vibrations using an electromagnetic coil 21, 22 is a yoke, and 23 is a movable core. The movable core 23 has a downwardly extending core shaft 24 inserted into a bearing 41 provided on the support wall 4, and a lower end 25 of the core shaft 24 is opposed to the top 31 of the vibrating shaft 3. Note that the lower end 25 of the iron core shaft 24 and the top portion 31 of the vibrating shaft 3 may be combined into one body. The vibrating shaft rod 3 passes through the bearing 51 of the through hole 5 in the lower part of the grip housing 1 and projects out of the housing, and forms an instrument mounting part 32 at the tip thereof that projects outside the housing. The instrument mounting section 32 is for mounting dental hand instruments such as bone only, bone file, remover, crown setter, and Hebel. In order to
Provide protrusions, grooves, screws, etc. for engagement as necessary. A spring 34 is provided in the through hole 5 and assists the vertical vibration of the vibrating shaft 3. Reference numeral 6 designates a switch for energizing the electromagnetic coil 21, reference numeral 61 a power cord, and reference numeral 11 a lid on the top of the grip housing 1.

A straight Hebel A is shown in FIG. 1 as a dental hand instrument to be mounted on the instrument mounting portion 32 at the lower end of the vibrating shaft 3. As shown in FIG. A1 is the Hebel mounting base, A2 is the Hebel tip, and the mounting base A1
It is formed into a cylindrical shape and has an engaging groove, protrusion, screw, etc. on its inner surface as necessary so that it can be attached to the instrument attachment part 32 of the vibrating shaft 3 described above. In addition,
The mounting base A1 may be formed into a shape that is inserted into the inner circumferential surface 33 of the instrument mounting portion 32 to be mounted thereon.

In the dental hand instrument holder of the present invention configured as described above, when the switch 6 is closed, the electromagnetic coil 2
is energized, the movable iron core 23 and the iron core shaft 24 vibrate, and the vibrating shaft 3 vibrates together with the vibration of the lower end 25 of the iron core shaft 24. As a result, the Hebel A mounted on the instrument mounting portion 32 at the tip of the vibrating shaft 3 also vibrates. At this time, the desired frequency can be obtained by appropriately setting the ON/OFF cycle of the circuit that energizes the electromagnetic coil.
It shall be set arbitrarily within the range of 10 to 100 per second, and the ON and OFF circuits shall be well-known appropriate circuits. If you hold the grip housing 1 of the holder in your hand and insert the tip A2 of the Hebel A into the gingival groove d shown in the second figure, the Hebel will be vibrating, so you can adjust the force of your hand as before. The Hebel tip can move deep into the tooth and detach the periodontal ligament very smoothly, reducing the patient's pain and causing no damage to the oral cavity, allowing for prompt and appropriate treatment operations. be.

Instead of the straight Hebel shown in FIG. 1, a curved Hebel B as shown in FIG. 3 may be attached to the instrument attachment portion 32 of the vibration shaft 3. This third
The mounting base B1 of the illustrated Hebel B is constructed in the same manner as the mounting base A1 of the straight Hebel A shown in the first diagram. B2 is the Hebel tip.

A remover C as shown in FIG. 4 can also be attached to the instrument attachment section 32. In the example shown in this fourth figure, an example is shown in which the mounting base C1 is formed into a male thread, and this male thread portion is screwed into the thread on the inner circumferential surface 33 of the instrument mounting portion 32 to be mounted. This mounting base C1 may be formed in the same manner as Hebel's mounting bases A1 and B1 shown in FIGS. 1 and 3 instead of having a male thread as shown. When the remover C is attached to the holder, the remover C is used by vibrating it, and when removing the crown or bridge during the prosthesis try-in operation, the tip C2 of the remover C can be hooked onto the margin of the crown or bridge. Because the remover vibrates, you can remove crowns and bridges very smoothly, and there is no need to apply force or pull hard with your hands, so the margins will not be deformed and there is no risk of damaging your gums.

A crown setter D as shown in the fifth figure can also be used by being attached to the instrument mounting portion 32 of the vibrating shaft 3 shown in the first figure. The mounting base D1 of this crown setter D is mounted on the instrument mounting part 32, and the crown setter D is vibrated in the same manner as described above by holding the grip housing 1 of the holder with the hand, and the distal disk part D
2 is placed between a metal crown, such as a crown or a bridge, and the teeth of the opposing jaw, and the disk part D2 also vibrates, allowing the excess cement in the metal crown to leak out quickly and reliably. By completing the proper installation, it becomes possible to perform the installation accurately and quickly even if the occlusal force is insufficient.

FIG. 6 shows a modification of the remover shown in FIG. 4, in which E1 is a mounting base, E2, E3
are the holding parts that hold the crown and bridge, E4, E5
is an elastic piece formed to be held by both the holding parts with appropriate elasticity. Note that this elastic piece part may be formed by pivoting one piece around a shaft and attaching a spring like scissors, or it may be formed by extending the rear end of the pivoting part long so that it can be gripped with the fingertips. . By attaching such a remover to the holder and vibrating it to clamp the crown or bridge with the clamping parts E4 and E5, the crown or bridge can be removed extremely easily and quickly during the prosthesis try-in operation. This prevents deformation of the margin and is safe with no risk of damaging the oral cavity.

Figure 7 shows bone only F, and Figure 8 shows bone file G.
shows. F1 shown in the 7th figure is a mounting base of the bone only F, F2 is a tip blade part, G1 shown in the 8th drawing is a mounting base of the bone file G, and G2 is a tip file part.

When using bone only F as described above,
Since only the bones F vibrate, there is no need to apply excessive force to the gripping hand, so it becomes possible to easily remove bones such as the alveolar bone without damaging the inside of the oral cavity.

Furthermore, when the bone file G is vibrated and used as described above, the operation of smoothly transferring the sharp edge can be performed extremely smoothly, easily, and quickly, and the bone file G can be smoothly moved without damaging the surrounding tissue. It can have a therapeutic effect.

"Effects of the Invention" As mentioned above, the dental hand instrument holder of the present invention is configured to vibrate hand instruments such as bone chisels, bone files, removers, crown setters, Hebels, etc. There is no need to pay close attention to the amount of force in the hands, and the treatment can be performed very smoothly and quickly without worrying about damaging the inside of the oral cavity. Since the instrument mounting part 32 is provided to allow various hand instruments to be attached and detached, one holder can handle various hand instruments, and the operation is extremely easy, which eliminates the troublesome steps required in the past. This has a significant effect on improving the efficiency of dental treatment.

In addition, since the movable core and the vibrating shaft are not directly connected, and the tip of the core shaft of the movable core is placed opposite the top of the vibrating shaft, the vibration of the movable core is not directly transmitted to the vibrating shaft, and the vibration Because the spring is attached to the rod, the shock is alleviated, and the hand instruments at the tip of the vibrating rod are not subjected to excessive force or violent vibrations, making handling easier and preventing gum damage. There is no risk of injury.

In addition, this vibration is not the high frequency generated by the high speed rotation of a compressed air turbine like the tartar removal device described in Japanese Patent Application Laid-open No. 57-196971.
It is ideal for hand tools such as bone files, removers, crown setters, Hebels, etc.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the device of the present invention, Fig. 2 is a conventional operation explanatory diagram, Fig. 3 is an embodiment of the Hebel remover of the present invention, Fig. 4 is an embodiment of the remover, and Fig. 5 is a diagram of an embodiment of the remover.
The figure shows one embodiment of the crown setter, Fig. 6 shows another embodiment of the remover, Fig. 7 shows only the bone, and Fig. 8 shows an example of the remover.
The figures are drawings showing one embodiment of each bone file. 1: Grip housing, 2, 7: Vibration generator, 3: Vibration shaft, 32: Instrument mounting part, A, B: Hebel,
C, E: Remover, D: Crown setter,
F: Bone only, G: Bone file.

Claims (1)

[Claims] 1. An electromagnetic coil and a movable core are provided in the upper part of the grip housing, and a vibrating shaft rod equipped with a spring is inserted into the lower part of the grip housing, and the tip of the core shaft provided in the movable core is connected to the top of the vibrating shaft rod. A holder for a dental hand instrument, characterized in that the dental hand instrument is mounted on the instrument mounting portion at the tip of the vibrating shaft, facing the holder.