JP2020081828A - Reciprocative-driven root canal filling tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a root canal filling work in dental treatment more reliable and quicker, and to make it comfortable for both a patient and a dentist with less fatigue. SOLUTION: A vibration side housing 11 is attached to the tip of a handle side housing 10. The attachment / detachment portion 13 of the root canal filling rod 3 is reciprocally incorporated into the vibration side housing 11. The root canal filling rod 3 inserted from the mounting port 16 of the root canal filling rod 3 at the rear end of the attachment / detachment portion 13 and fixed by the screw lid 33 has a needle portion 31 of the attachment / detachment portion 13 and the vibration side housing 11. It protrudes from the front end. The tip portion 32 of the needle portion 31 is flat. The rotation shaft 25 of the handle-side housing 10 is connected to the rotation shaft 21 of the geared motor 20 of the chair unit 2, and the pin 26 attached in an eccentric state is inserted into the pin hole 14 provided on the side surface of the attachment / detachment portion 13. It is engaged. [Selection diagram] Fig. 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reciprocating root canal filling device for reciprocally moving a plugger or the like to vertically press a tooth filling.

After removing the nerve, the root canal filling is a treatment to tightly stuff the root canal filling material such as waxed floss or gutter perture into the cavity of the tooth decay to prevent reinfection. ..

Regarding the above-mentioned root canal filling treatment, the article on the following Internet site is easy to understand.

Internet WWW site <URL:http://www. is-dc-m. net/pages/root. html>

The root canal filling tool used in the procedure for this root canal filling treatment is a plugger or similar file (hereinafter referred to as a root canal filling rod), which allows a root canal filling material such as floss with wax. It is performed by vertically pressurizing the roots in the direction of the apex without any gap.

An object of the present invention is to make it possible to perform the root canal filling work as described above more certainly and more quickly, and to make the patient and the dentist less tired and comfortable.

The above-mentioned problem is solved in that the root canal filling device presses the tooth filling vertically, but this operation is performed by auxiliary power rather than manually. That is, what is provided by the present invention is to provide a root canal filling rod whose tip portion is a substantially flat surface or a substantially spherical surface, a casing, and a detachable portion of the root canal filling rod which is reciprocally provided in the casing. A reciprocating drive type root canal filling device comprising a reciprocating motion generating unit that is housed in the housing and reciprocates the root canal filling rod by giving a reciprocating motion to the attaching/detaching part. The dentist holds the housing in his hand and performs the operation.

As the reciprocating motion generating unit, for example, a crank is provided on a rotating shaft that receives power from the rotating shaft of the electric motor of the chair unit, and the attaching/detaching part of the root canal filling rod is engaged with the crank. The crank rotates, and the rotating motion is converted into a reciprocating motion by the attaching/detaching part and the crank and transmitted to the root canal filling rod.

In addition, a pin that is eccentrically provided on the rotary shaft of the electric motor and is engaged with a pin hole provided on the side surface of the attaching/detaching portion also causes reciprocating movement in the attaching/detaching portion, similar to the crank. Can be done.

In addition, a reciprocating rod is fixed to one place on the outer periphery of the rotating disk attached to the rotating shaft of the electric motor with a rotating pin (this may also be called a kind of crank), or a reciprocating rod is attached to the cam of the rotating shaft. Any conversion mechanism may be used, such as one in which the rollers at the tip end are brought into contact with each other, or one in which the electric motor is controlled to rotate the rack gear forward or backward in accordance with the engagement between the rack gear and the pinion gear.

With regard to the above arbitrary power, for example, there is a possibility of a water turbine that uses a water flow from a chair unit to generate a rotary motion on a rotary shaft. Note that there is also a design in which an electric motor or the like is separately provided on the housing side instead of using the chair unit as the power source as described above. These are also the scope of rights of the present invention.

Such reciprocating motion can be performed at high speed. Therefore, instead of operating the root canal filling rod with only his own finger to tightly pack the root canal filling material, the dentist can obtain the help of the reciprocating movement of the electric motor, which makes the operation impossible. There is no need to do this, and it is possible to treat in a short time with less fatigue. This is a great help for better dental care. It also reduces the burden on the patient side. A linear motor can also be used as the electric motor.

Next, the attachment/detachment portion is configured to insert the root canal filling rod from the rear side so that the tip of the rod is taken out from the front side, and a fixing means for stopping the inserted root canal filling rod. It may be provided in the rear part of the attaching/detaching part.

When the root canal filling rod is composed of a support shaft and a needle-shaped portion, the root canal filling rod is attached to the front side of the attachment/detachment part by a mounting opening for mounting the support shaft from the front side. Besides, there is a configuration as in this claim. By fixing the root canal filling rod by the fixing means after inserting the root canal filling rod from the rear side, the root canal filling rod is firmly fixed to the reciprocating type root canal filling device. Although there is no problem with the former configuration, the needle-like portion of the root canal filling rod is directed toward the dentist even though the tip portion is a substantially flat surface or a substantially spherical surface. If there is resistance in attaching or detaching the spindle from the front side, the root canal filling rod needle-like part should be separated from the dentist from the back side of the attaching/detaching part. It is preferable that the spindle of the filling rod can be inserted and removed together with the spindle. Moreover, this insertion/removal attachment method is relatively easy to use.

Next, a thin portion or a hole portion for reducing the weight may be provided on the side wall portion of the attachment/detachment portion. This is a problem with the overall weight of the reciprocating root canal filling device. That is, it may be said that it is better that the total weight of the reciprocating type root canal filler is easier for the dentist to handle. The main attachment/detachment portion is suitable for such a case.

Next, the surface of the root canal filling rod may be a fluorine-coated (fluorine resin-coated) surface. When the root canal filling rod is coated with fluorine, the surface of the rod is protected by the fluororesin, resulting in antifouling, and discoloration correction is naturally performed when the rod is made of metal.

That is, the formation of the protective film of the fluororesin improves the water repellency, the abrasion resistance, and the slipperiness. This means that the adhesion to root canal filling materials such as waxed floss and gutter perture is reduced. Therefore, it is convenient to pressurize the root canal filling material at a high speed. It should be noted that materials other than the fluororesin having high non-adhesiveness and small adhesive energy are also within the scope of the present invention.

According to the present invention, the root canal filling rod whose tip portion is substantially flat or substantially spherical, the casing, the attachment/detachment portion of the root canal filling rod provided on the casing so as to reciprocate, and the casing. A reciprocating drive type root canal filling device that is reciprocally moved to reciprocate the root canal filling rod by giving a reciprocating motion to the attachment/detachment part. Since the vibration of the reciprocating motion generating unit can be obtained without relying only on the work, the operation is less difficult. That is, the root canal filling treatment can be performed more surely and more quickly, and there is an effect that the patient and the dentist are less tired and comfortable.

It is explanatory drawing which notched a part of Example 1 and represented typically. It is explanatory drawing which represented this circuit part typically. It is explanatory drawing which notched a part of the vibration cylinder 13 and was represented typically. It is explanatory drawing which notched a part of Example 2 and was represented typically. It is explanatory drawing of the root canal filling rod 35 of Example 3. It is explanatory drawing which notched a part of the vibration side housing|casing 51 of Example 4, and was represented typically.

Embodiments of the present invention will be described below with reference to the drawings, but the present invention is not limited to these.

The reciprocating drive type root canal filling device 1 for the root canal filling rod 3 shown in FIGS. 1 to 3 includes a handle side casing 10 and a vibration side casing 11, and the vibration side casing 11 is a handle side casing. It is attached to the front end portion of the body 10 so as to form a T-shape with the handle side housing 10. An attaching/detaching portion 13 of the root canal filling rod 3 for vertically pressing the tooth filling is vertically and reciprocally incorporated in the vibrating side casing 11 in such a manner that the tip portion is protruded from the opening 12. There is. The reciprocating motion generating unit described later is for reciprocating the attaching/detaching part 13.

An electric geared motor 20 is housed in the chair unit 2, and electric power is supplied to an input terminal 22 of the geared motor 20 from a chair unit power supply 24 via a foot switch 23. The rotary shaft 21 of the geared motor 20 is connected to the rotary shaft 25 in the handle side housing 10.

A pin 26 is eccentrically provided at the tip of the rotary shaft 25, and the pin 26 is engaged with a pin hole 14 provided on the side surface of the attaching/detaching part 13. The reciprocating motion generating unit is configured in this way. The root canal filling rod 3 used in this embodiment includes an insertion portion 30 and a needle portion 31, and a tip portion 32 of the needle portion 31 is flat.

The attachment/detachment portion 13 is provided inside the vibrating side casing 11 so as to be capable of vibrating in the front-back direction (vertical direction in FIG. 1). A guide pin 17 protruding from the side surface of the attachment/detachment portion 13 is inserted into a guide groove 18 provided inside the vibrating casing 11 in the front-back direction, that is, in the direction in which the root canal filling rod 3 reciprocates.

A mounting port 16 is opened at the rear end of the attaching/detaching portion 13, and when the root canal filling rod 3 is attached from here, the needle portion 31 of the attaching/detaching portion 13 comes out of the needle passage hole 15 of the attaching/detaching portion 13 and is inserted. The tip of the portion 30 can be pushed in until it comes into contact with the inside of the needle insertion hole 15. The root canal filling rod 3 can be fixed by screwing a screw lid 33 as a fixing means into the mounting opening 16. Therefore, replacement of the root canal filling rod 3 is performed by attaching and detaching the screw lid 33. The fixing means need not be a screw type.

In the present invention, the root canal filling rod 3 can be configured to be detachable from the tip end side of the attaching/detaching portion 13, but the feature of this embodiment is not so, and the root canal filling rod 3 is attachable/detachable from the rear end side. It is configured so that the root canal filling rod 3 can be attached more conveniently. Since the pin 26 of the rotating shaft 25 is laterally fitted in the pin hole 14 of the side wall of the attaching/detaching portion 13, as is apparent from FIG. It is also a feature that it is merely vibrated and does not substantially rotate around the needle portion 31 of the root canal filling rod 3. However, the configuration of the guide pin 17 and the guide groove 18 as described above is provided in consideration of the case in which the rotational vibration is relatively large. The arrow line S represents the direction of the stroke.

Now, another application of the reciprocating drive type root canal filling device 1 of the first embodiment will be described. In dental treatment, it may be necessary to remove the wax-filled floss and gutter-perture that are tightly packed in the root canal-filled tooth in the past and then perform the treatment again. At this time, in order to remove the old padding neatly, it has conventionally been necessary to perform fine manual work over time.

However, when the reciprocating drive type root canal filling device 1 of the first embodiment is used by attaching the commercially available hand file 4 in place of the root canal filling rod 3, the needle portion 41 moves up and down at such a high speed that it cannot be matched by handwork. In order to perform the movement, the old stuffing is hooked on the protrusion 42 provided on the needle portion 41, and a phenomenon occurs in which the stuffing can be taken together as a lump with the slur. This was an unexpected discovery for the present inventor.

Therefore, when the reciprocating drive type root canal filling device 1 is used in this way, the same can be done at the time of root canal filling work of the root canal filling material, but when removing old fillings, the operation can be performed more surely and quickly. The effect of becoming is obtained.

In the second embodiment, the screw lid 34, which is thinner and lighter than the screw lid 33 of the first embodiment, is screwed into the mounting opening 16. As a result, the attachment/detachment portion 13 of the reciprocating drive type root canal filling device 1 can be reduced in weight. Reference numeral 40 in the drawing denotes a grip portion in the hand file 4 of a commercially available product.

Next, the root canal filling rod 35 of the third embodiment will be described with reference to FIG. In the above-described embodiment, the root canal filling rod 3 includes the insertion portion 30 and the needle portion 31, and the tip portion 32 of the needle portion 31 is flat.

On the other hand, the root canal filling rod 35 includes an insertion portion 36 and a needle portion 37, and a tip portion 38 of the needle portion 37 has a curved surface of a kind of spherical shape. When the tip portion 38 has a spherical shape in this way, when a root canal filling material such as floss with wax is vertically pressed in the apical direction, it is pressed in a substantially oblique downward direction together with the vertical pressing. That is, the feature that is done at the same time occurs.

In addition, the surface of the root canal filling rod 35 is a fluorine coated (fluorine resin coated) surface. The surface of the metallic needle portion 37 and the tip portion 38 thereof is protected by the protective film of fluororesin, and the water repellency and abrasion resistance as well as the slipperiness are improved. Therefore, it has an antifouling effect and an effect of lowering the adhesiveness to the root canal filler such as floss with wax and gutter perture.

This embodiment shown in FIG. 6 adopts the following configuration to the above-described first embodiment. That is, the weight of the attaching/detaching portion 53 is made lighter by providing the notch portion 59 in the side wall portion of the attaching/detaching portion 53 of the root canal filling rod. Therefore, the total weight of the root canal filling rod 5 is smaller.

Reference numeral 51 is a vibration side casing, reference numeral 52 is an opening, reference numeral 54 is a pin hole, reference numeral 55 is a needle passage hole, reference numeral 56 is a root canal filling rod mounting port, and reference numeral 57 is a guide pin. Reference numeral 58 indicates a guide groove. The shape, the number, and the position of the notches 59 are arbitrary design matters. If it is not preferable that a hole is formed as the cutout portion, it is possible to devise a method of filling the cutout portion with a light material. Alternatively, the thin portion may be used instead of the hole.

According to the present invention, the root canal filling treatment can be performed more surely and more quickly, and the burden on the dentist and the patient is significantly reduced. Therefore, the industrial utility value of the present invention is extremely high. The present invention may be used in the field of veterinary medicine.

1: Root canal filling device 10: Handle side casing 11: Vibration side casing 12: Opening portion 13: Attachment/detachment portion 14: Pin hole 15: Needle through hole 16: Mounting port 17: Guide pin 18: Guide groove 2: Chair Unit 20: Geared motor 21: Rotating shaft 22: Input terminal 23: Foot switch 24: Chair unit power supply 25: Rotating shaft 26: Pin 3: Root canal filling rod 30: Insertion part 31: Needle part 32: Tip part 33: Screw cap 34: Screw cap 35: Root canal filling rod 36: Insertion part 37: Needle part 38: Tip part 4: Hand file 40: Picking part 41: Needle part 42: Protrusion 5: Root canal filling rod 51: Vibrating side Housing 52: Opening 53: Attachment/Detachment 54: Pin Hole 55: Needle Through Hole 56: Mounting Port 57: Guide Pin 58: Guide Groove 59: Notch

Claims (5)

A root canal filling rod whose tip portion is substantially flat or substantially spherical, a housing, a detachable portion of the root canal filling rod provided reciprocally in the housing, and the detachable portion housed in the housing. A reciprocating drive type root canal filling device comprising a reciprocating motion generating section that reciprocates the root canal filling rod by reciprocating. The reciprocating motion generating section is formed by engaging a pin provided eccentrically with respect to a rotary shaft by an arbitrary power with a pin hole provided on a side surface portion of the attaching/detaching section. Reciprocating drive root canal filling device. The attachment/detachment portion is configured to insert the root canal filling rod from the rear side so that the tip of the rod comes out from the front side, and the attaching/detaching means for fixing the inserted root canal filling rod. The reciprocating drive type root canal filling device according to claim 1, which is provided at a rear portion of the portion. The reciprocating drive type root canal filling device according to claim 1, wherein a thin portion or a hole portion for reducing the weight is provided on a side wall portion of the attachment/detachment portion. The reciprocating drive type root canal filler according to claim 1, wherein the surface of the root canal filling rod is a fluorine-coated surface.

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