JPH032253Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention relates to a light irradiator for dental treatment that hardens the light-curable filling material that is filled into holes made in teeth during dental treatment. The purpose of this device is to avoid the risk of tendonitis on the therapist's wrists even if the therapist holds the dental treatment light irradiator in his or her hand for a long time, and to avoid the risk of tendonitis on the therapist's wrist. To provide a light irradiator for dental treatment that can perform proper treatment while checking the affected area without blocking the line of sight of a therapist when performing treatment while looking into the affected area in the oral cavity.

(Background of the invention) In dental treatment, various filling materials are used to fill holes made in teeth during treatment.

Phosphate cement, silicate cement, amalgam, etc. have long been used as materials for this filling material, but these materials generally have poor adhesion to the tooth after hardening, and there is a risk of them falling out from the perforation of the tooth after hardening. It was hot.

In recent years, in order to avoid such deficiencies, photocurable synthetic resin materials with high adhesiveness have come to be used as filler materials.

The curing of this photocurable synthetic resin material is not natural curing as in the case of conventional amalgam, but is carried out by photopolymerization by light irradiation, so therapists also need to use a light irradiator to perform the treatment. are becoming more common.

(Prior art and its problems) Conventionally, as the above-mentioned light irradiator, there are those shown in FIGS. 7A and 7B.

Among the light irradiators a, the one shown in FIG. 7A is of the so-called pencil type, and has an irradiating fiber c protruding from the tip of a hollow body b in the shape of an elongated cylinder, and extends from the light source. The distal end of the transmission fiber d is inserted into the hollow body b from its proximal end, and the distal end of the transmission fiber d and the proximal end of the irradiation fiber c are connected within the body b.

On the other hand, the light irradiator a shown in FIG. An irradiation fiber c is protruded from the tip of the body e, and the base end of the irradiation fiber c is opposed to the light source g within the light source storage body e.

To use the above two types of light irradiators a for dental treatment, the therapist holds the phototherapy device a in hand, inserts the tip of the irradiation fiber c into the patient's oral cavity, and then The tip of the irradiation fiber c is placed opposite to the filling filled in the perforation of the inner tooth, and the visible light generated by the light source g is transmitted through the transmission fiber d and the transmission fiber C, and from the tip of the irradiation fiber C. The filling is irradiated to harden the filling by photopolymerization.

In the case of such a conventional light irradiator (a), in the case of a pencil type one, since there is no built-in light source, the hollow body (b) can be formed to be thin, and the therapist can treat the patient while checking the affected area by looking into the patient's oral cavity. In some cases, it is easier to perform treatment because the therapist's line of sight is directed toward the affected area without being obstructed by the body b, but when holding this in the hand, the proximal end of the hollow body b must be held between the base of the thumb and index finger. Because the transmission fiber d is supported almost horizontally by pinching around the tip with fingers, the transmission fiber d is placed on the wrist, which puts a strain on the wrist, making it difficult to perform treatment operations and causing the therapist to suffer from tendonitis in the wrist. Such cases are often seen.

On the other hand, the gun type has a light source storage body e.
Since the light source g is housed inside, the transmission fiber d is unnecessary and there is no problem of having the transmission fiber on the wrist like in the pencil type, but the outer shape of the light source housing body e is designed to accommodate the light source g. However, when the therapist performs treatment while looking into the oral cavity, the therapist's line of sight is blocked by the light source storage body e, which makes it difficult to perform proper treatment.

Furthermore, in this gun type, since the light source g is housed in the light source storage body e, the heat of the light source g is transmitted to the therapist's hand via the grip f, making it impossible to hold it in the hand for a long time. There was a problem that long-term treatment was not possible.

(Means for solving the problem) This invention was made in order to solve the above problem.A cylindrical mounting part is provided on the upper part of the hollow grip in a direction substantially perpendicular to the grip. In a light irradiator for dental treatment, an irradiation fiber is attached to the distal end in a protruding state in the axial direction of the attachment part, and a distal end of a transmission fiber extending from the light source is joined to the proximal end of the irradiation fiber. An insertion hole with a diameter larger than the diameter of the irradiation fiber is drilled at the bottom of the grip, and the tip of the transmission fiber inserted into the grip through this insertion hole is curved at the upper part of the grip, and the tip of the transmission fiber is inserted into the grip through the insertion hole. is joined to the proximal end of the irradiation fiber in the attachment part, and an elastic pipe inserted into the middle part of the transmission fiber is fastened with a fixing band fixed to the upper part of the inner peripheral surface of the grip. By providing an irradiator, all of the above problems are solved.

(Example) An example of this invention will be described based on the drawings.
1 to 6 are diagrams for explaining a light irradiator for dental treatment according to an embodiment of this invention.

As shown in FIG.
, an irradiation fiber 3 using an optical fiber, and a transmission fiber 4 using an optical fiber extending from a light source (not shown).

In this embodiment, the main body 2 has a cylindrical mounting portion 6 projecting from the top of a rectangular box-shaped grip 5 in a direction substantially perpendicular to the grip 5.

An insertion hole 6 having a diameter larger than that of the transmission fiber 4 is bored in the bottom of the grip 5, and the tip of the transmission fiber 4 is inserted into the grip 5 through the insertion hole 7.

The transmission fiber 4 is molded 15 with rubber below the bottom.

A protrusion 8 is threaded on the outer periphery of the transmission fiber 4 in the middle.
The elastic pipe 9 having a shape of Fixed band 12
It has been concluded.

The distal end of the transmission fiber 4 is curved above the hollow grip 5, and the distal end of the transmission fiber 4 is connected to the proximal end of a joint 13 mounted within the mounting portion 6.

The proximal end of the irradiation fiber 3, which is provided at the distal end of the attachment part 6 and protrudes in the axial direction of the attachment part 6, is rotatably joined to the distal end surface of the joint 13 in a mating state.

The tip of the irradiation fiber 3 is bent into a dogleg shape,
A cylindrical cushion 16 is removably inserted into the tip.

A mounting portion 6 is provided on the circumferential surface of the proximal end of the irradiation fiber 3.
A packing 17 is fitted to the tip.

In the figure, 18 is a light source switch, 19 is a non-slip protrusion formed around the bottom of the hollow grip 5, and 20 is a hook part protruding from the base end of the attachment part 6 of the split-shaped main body 2. It has a latching hole 21.

To use the light irradiator 1 configured as described above, the therapist grasps the hollow grip 5 and inserts the tip of the irradiation fiber 3 into the patient's oral cavity as shown in FIG. While looking into the oral cavity, place the material against the filling that has been filled into the perforation of the tooth in the oral cavity, and then turn on the switch 18. Visible light generated from the light source is transmitted sequentially through the transmission fiber 4, joint 12, and irradiation fiber 3. The filling material is irradiated from the tip of the irradiation fiber 3 toward the filling material, and the filling material is cured by photopolymerization.

In this embodiment, since the transmission fiber 4 is inserted into the main body 2, there is no need to house a light source inside the main body 2, and heat is not transmitted to the hollow grip 5, so the therapist does not feel hot. The outer shape of the mounting part 6 can be made compact so that the line of sight of the therapist looking into the oral cavity is not obstructed, and the overall weight of the light irradiator 1 can be reduced so that no burden is placed on the wrist of the therapist.

Since the transmission fiber 4 is inserted into the main body 2 from the bottom 14 of the hollow grip 5, the transmission fiber 4 does not touch the therapist's wrist while gripping the hollow grip 5. Don't burden yourself.

Bottom 1 of the hollow grip 5 of the transmission fiber 4
The transmission fiber 4 is inserted through the insertion hole 7 having a larger diameter than the transmission fiber 4, and the outer periphery of the transmission fiber 4 inserted into the middle part is fixed by the fixing band 12 above the insertion hole 7. Since the elastic pipe 9 having the threaded protrusion 8 is fastened, the transmission fiber 4 can swing freely within the range of the insertion hole 7 using the fixing band 12 as a fixed point, and the axis of the transmission fiber 4 It is possible to buffer the torsion around the transmission fiber 4, and even when the light irradiator 1 is tilted back and forth, left and right, or when the direction is changed in the horizontal rotation direction, such movements are performed smoothly, and the bending of the transmission fiber 4 can be buffered. , the twist is buffered and the transmission fiber 4 is not damaged.

Furthermore, since the tip of the irradiation fiber 3 is bent into a dogleg shape and the fiber 3 is rotatable around its axis, irradiation can be directed to the entire periphery of the tip of the irradiation fiber 3.

Furthermore, since the packing 17 is interposed between the peripheral surface of the base end of the irradiation fiber 3 and the tip of the attachment portion 6, the opening at the tip of the attachment portion 6 is kept watertight.

Furthermore, since the light source switch 18 is provided in the hollow grip 5, it can be operated at hand.

In addition, a non-slip protrusion 1 is provided at the bottom of the hollow grip 4.
9, the light irradiator 1 will not slip off.

(Effects) As explained above, this invention has a cylindrical mounting part protruding from the upper part of the hollow grip in a direction approximately perpendicular to the grip, and an irradiation fiber protruding from the tip of this mounting part in the axial direction of the mounting part. In a dental treatment light irradiator in which the tip of a transmission fiber extending from a light source is connected to the proximal end of the irradiation fiber, the grip has an insertion hole having a diameter larger than the diameter of the irradiation fiber at the bottom of the grip. is drilled, and the distal end of the transmission fiber inserted into the grip from this insertion hole is bent at the upper part of the grip, and the distal end of the transmission fiber is joined to the proximal end of the irradiation fiber within the attachment part, and the This is a light irradiator for dental treatment that consists of an elastic pipe inserted into the middle of a transmission fiber and fastened with a fixing band fixed to the upper part of the inner peripheral surface of the grip.The transmission fiber is inserted into a hollow grip. Therefore, there is no need to store the light source inside the hollow grip or the mounting part, and the hollow grip does not generate heat and does not make the therapist feel heat, allowing long-term treatment. Since it is compact, the line of sight of the therapist looking into the oral cavity is not obstructed, and appropriate treatment can be performed.Furthermore, the overall weight of the light irradiator can be reduced and no burden is placed on the wrist of the therapist, thereby preventing tendonitis of the therapist.

Since the transmission fiber is inserted into the main body from the bottom of the hollow grip, the transmission fiber does not touch the wrist of the therapist who is grasping the hollow grip. Effectively prevents tendonitis in the therapist.

The transmission fiber is inserted from the bottom of the hollow grip through an insertion hole having a diameter larger than that of the transmission fiber, and is inserted into the middle part of the transmission fiber by a fixing band above the insertion hole. Because the elastic pipe with threaded ridges is fastened to the outer periphery,
The transmission fiber can swing freely within the range of the insertion hole using the fixed band as a fixed point, and
It can buffer twisting around the axis of the transmission fiber, making it possible to tilt the light irradiator back and forth, left and right,
Or, even when the direction is changed to the lateral rotation direction, the operation is performed smoothly, and not only can the treatment operation be carried out smoothly, but also the bending and twisting of the transmission fiber is buffered, so there is no damage to the transmission fiber.

[Brief explanation of the drawing]

Fig. 1 is a side view of a light irradiator according to an embodiment of the present invention, Fig. 2 is a vertical sectional side view of the same main part, Fig. 3 is a - sectional view, Fig. 4 is a - sectional view, and Fig. 5 is the same plan view, Fig. 6 is an explanatory diagram of the same usage state, Fig. 7A,
B is an explanatory diagram of the prior art. DESCRIPTION OF SYMBOLS 1...Light irradiator, 2...Main body, 3...Irradiation fiber, 4...Transmission fiber, 5...Hollow grip, 6...Mounting part, 7...Insertion hole, 8...Threaded fitting Article, 9...Elastic pipe, 12...Fixing band, 1
4...Bottom.

Claims (1)

[Scope of utility model registration request] A cylindrical attachment part is provided on the upper part of the hollow grip in a direction substantially perpendicular to the grip, and an irradiation fiber is attached to the tip of this attachment part in a protruding state toward the axial direction of the attachment part. In a light irradiator for dental treatment in which the tip of a transmission fiber extending from a light source is joined, an insertion hole having a diameter larger than the diameter of the irradiation fiber is bored in the bottom of the hollow grip, and from this insertion hole. The tip of the transmission fiber inserted into the grip is curved at the upper part of the grip,
The distal end of the transmission fiber is joined to the proximal end of the irradiation fiber within the attachment part, and the elastic pipe inserted into the midway part of the transmission fiber is fastened with a fixing band fixed to the upper part of the inner peripheral surface of the grip. A light irradiator for dental treatment.