JP2005192860A - Dental unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dental unit with a built-in xenon lamp in a unit body, capable of dividing the light from the xenon lamp, having properties of easily viewing an object and locating a light head part only for irradiation on the face of a patient. <P>SOLUTION: The dental unit has a light source part 3 with the xenon lamp 16 as a light source built in the unit body 1. The light of the xenon lamp 16 is divided into three beams via a fiber cable 23, and is guided to the light head 4 which can be moved or stationed in the horizontal or vertical direction by a light pole 5, a first arm 6 and a second arm 10. The light is emitted from three light emitting parts of the light head 4 to irradiate the treated region. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a dental unit for medical treatment and treatment in dentistry.

Conventionally, in a dental unit, a halogen bulb (halogen lamp) is generally used as a light source. As shown in FIG. 10, a rectangular reflecting mirror 42 is provided behind the halogen bulb 41 and the front of the halogen bulb 41 is provided. In addition, a shielding plate 43 that blocks light so as not to directly irradiate the patient with light rays from the halogen bulb 41 is provided to constitute the light unit 44 of the dental unit. That is, a method of reflecting the light from the halogen bulb 41 forward by the reflection mirror 42 is adopted, and a rectangular irradiation field by the reflected light of the reflection mirror 42 is formed on the patient laid on the treatment chair so that the molar portion is good. It is made visible (for example, patent document 1). The light unit 44 is mounted on a dental unit using a light pole 45, a first arm 46 and a second arm 47.
JP 2003-135493 A (paragraph number 0009)

  However, in recent years, during the treatment of a dentist, the patient is placed on his / her back on the dental treatment chair and the surgeon (dentist etc.) is sitting on the chair, so the light of the halogen bulb 41 is reflected by the reflection mirror 42. In the case of the forward irradiation method, the halogen bulb 41 is positioned on the patient's face. Therefore, if the halogen bulb 41 is broken during the treatment of the patient, the patient is seriously injured, so that a cover for covering the halogen bulb 41 needs to be installed. In addition, since the shielding plate 43 is arranged in the center of the reflection mirror 42 in front of the halogen bulb 41 so that the patient is not irradiated with direct light from the halogen bulb 41, as shown in FIG. The incident light is irradiated by reflected light in two directions from above and below the reflection mirror 42, and there is a problem that only about 20% of light enters the intraoral molar portion of the patient who is in a bag shape on the lips. Furthermore, the shadowless effect is increased by increasing the pitch p of the irradiation light shown in FIG. 11, but the reflector 42 must be enlarged to increase the pitch p. As shown in FIG. Even if the reflector 42 is small, it is heavy with a width of about 12 cm, a length of about 20 cm, and a thickness of 6 to 7 mm. If the reflector 42 is made larger, the weight increases and the size of the light unit 44 of the dental unit increases. In addition to the wide installation space, the light cover 44 becomes heavier by providing the cover, the operability of the light part 44, the light pole 45 that supports the light part 44, the first arm 46, and the second arm. 47 imposes a heavy burden and causes a problem in unit strength.

  The halogen bulb 41 emits light when the filament is heated in bromine gas sealed in a glass bulb, and this light is yellowish red. There are cases where white teeth are provided, but there is a problem that the teeth do not look white with the yellow-red light of the halogen bulb 41.

  On the other hand, in order to prevent the halogen bulb 41 from being positioned on the patient's face, the halogen bulb 41 can be arranged elsewhere, and light from the halogen bulb 41 can be introduced by an optical fiber to irradiate the patient. When a long optical fiber is used for the light of the sphere 41, there is a problem that the light applied to the patient becomes dark.

  In addition, there is a doctor's office that is not equipped with a surgical light (treatment light) on the dental unit and is equipped with a surgical light on the ceiling and is unrelated to the dental unit. There was a problem that caused anxiety.

  Therefore, the present invention has been made in view of the above-described conventional problems, and uses a xenon lamp having a wide wavelength range property that allows easy visual recognition of an object as a light source, without positioning the xenon lamp on the patient's face. In addition to guiding the light of the xenon lamp to the required position via the optical fiber, the irradiation fields emitted from the respective light emitting portions are polymerized to provide irradiation fields with vertical and horizontal widths necessary for treatment such as dental treatment An object of the present invention is to provide a dental unit equipped with a headlight that can be irradiated with a shadowless effect and is improved in operability by reducing safety and weight for a patient.

  In order to achieve the above object, a dental unit according to a first aspect of the present invention provides a light source unit including a xenon lamp as a light source, a unit main body incorporating the light source unit, and light emitted from the light source unit. An optical fiber part that guides light to the head part, and a light head part that is guided through the optical fiber part so that it can irradiate the irradiated part while at least dividing the irradiation light from the light source part; The light head portion includes a support portion capable of moving and stopping in the horizontal direction and the vertical direction.

  According to the first aspect, the light of the xenon lamp used in the light source unit has excellent performance in brightness, light color, and the like, and the visibility of the object is good. Therefore, fatigue of a doctor such as a dentist can be reduced.

  In addition, since the light of the xenon lamp built in the unit body can be easily guided to the required irradiation site via the fiber cable, only the light head part is placed on the patient's face, saving treatment space By splitting the fiber bundle, it is possible to efficiently irradiate the oral cavity with light from at least three exit portions by using one xenon lamp, and in particular, the intraoral portion by the central exit portion. It is possible to enter the light up to the back. Moreover, in each treatment part, it becomes possible to produce a shadowless effect by setting the emission direction so that the irradiation fields of the light branched at least in three at the light head part are superposed on each other.

  According to the present invention, irradiation from the xenon lamp of the light source unit can be introduced into the required treatment unit by the light head unit via the optical fiber unit, so that only the light head unit is arranged on the patient's face, There is no fear of hurting a patient due to breakage of a halogen bulb arranged on the face as in the conventional example, and safety can be ensured. In addition, a space for treatment can be saved by arranging a light source unit in a unit body that does not interfere with treatment without disposing a xenon lamp as a light source on the face. Furthermore, since the halogen bulb uses a filament as a light emitter, the life of the halogen bulb is shortened by vibration generated when the treatment place is moved to the irradiation place. In the case of a xenon lamp, the bulb life is reduced to the halogen bulb. It can be used about 10 times longer than that, and further, since a reflecting mirror is not used, the light head portion is small and light, and the operability can be improved and the cost can be reduced.

  In addition, by using a xenon lamp as the light source of the dental unit, the treatment part can be clearly irradiated with the light of the xenon lamp excellent in brightness and light color, and can be used for aesthetic dentistry, as well as a dentist. The fatigue of doctors such as can be reduced.

  In addition, the treatment field is irradiated with xenon lamp light divided into at least three parts, and the irradiation field in the irradiation part is polymerized so that the irradiation field can be left and right without enlarging one circular field or making it elliptical. It is possible to expand to.

  Further, it is possible to obtain a shadowless effect in the irradiation field by directly irradiating the surgical site in the central irradiation field in the three lamp irradiation and irradiating from the left and right directions with the other two lamps. In addition, since the irradiation field is expanded to the left and right by these three lights, even if the patient's oral cavity is turned to the left and right during the medical treatment, the treatment part does not come off the irradiation field.

  For the purpose of not placing the light source of irradiation light on the patient's face in the sitting position medical care, the light source is housed in the unit body, and only the light head portion guided by the optical fiber is positioned on the face.

Embodiment 1 of the present invention will be described below with reference to FIGS.
1 to 9 relate to a first embodiment of the present invention, FIG. 1 is a perspective view showing the whole of a dental unit, FIG. 2 is a perspective view showing a partially broken unit body of the dental unit, and FIG. 4 is a perspective view showing the light source part and the light head, FIG. 5 is a perspective view showing the light emitting part of the light head, and FIG. 6 is a sectional view of the light emitting part. 7 is a schematic diagram showing an example of the lens arrangement of the light head, FIG. 8 is an explanatory diagram showing three lamps parallel irradiation, and FIG. 9 is an explanatory diagram showing three lamps cross irradiation.

  In the dental unit of the present invention, as shown in FIGS. 1 and 2, a light source unit 2 provided with a xenon lamp 16 as a light source is disposed in a unit body 1, and the light from the xenon lamp 16 is transmitted through an optical fiber 3. The light is guided to the light head 4 through the light head 4. A light pole 5 is erected on the unit body 1, and a first arm 6 is attached to the tip (upper end) of the light pole 5 so as to be movable in the horizontal direction around the light pole 5. A second arm 7 is attached to the tip of the first arm 6 so as to be rotatable in the vertical direction around the first arm 6. The light pole 5, the first arm 6, and the second arm 7 function as a support member for the write head 4. The light head 4 is attached to the tip of the second arm 7, and the light head 4 moves to an arbitrary optimum position by moving the first arm 6 in the horizontal direction and rotating the second arm 7 in the vertical direction. Thus, the patient can be irradiated with light from the xenon lamp 16 of the light source unit 2. It should be noted that the headlight 4 and the second arm 7 are balanced with the weight of the tip, so that the headlight 4 and the second arm 7 are stationary and do not move at any moved positions. In addition, the code | symbol 9 in FIG. 1 is a dental treatment chair.

  As shown in FIG. 3, the light source unit 2 built in the unit main body 1 is configured by combining a xenon lamp 16 and an infrared absorption pyrex (registered trademark) condensing mirror 17 in a light source case 15. The generated light is isolated by the unit main body 1 together with the light source case 15 so as not to leak to the outside so as not to harm the patient or the operator. The light of the xenon lamp 16 has a color temperature of 5.400 K (Kelvin) close to that of sunlight, and has the property that it is easy to visually recognize an object in the wavelength range of the human retinal function, and at the same time, the electromagnetic wave of the light. Is a cold light beam that affects the human body.

  The light generated from the xenon lamp 16 is reflected by the condensing mirror 17 shown in FIG. 3, and is attached to the outside of the focus lens 15 a via the focus lens 15 a in the opening of the light source case 15. It is introduced into a fiber cable 23 as an optical fiber 3 connected via a conductor 22 to a conductor receiver 21 which is a connecting portion with the cable 23.

  The fiber cable 23 includes a glass fiber bundle 23a and a cover tube 23b covering the outer periphery thereof, and the condensing mirror 17 is supported by a mirror holding member 17a and a mirror receiver 17b and fixed by screws 24. The high pressure generator 19 is fixed to the surface of the mirror receiver 17b by four columns 25, and the xenon lamp 16 is fixed to the high pressure generator 19 via a light bulb mounting plate 26 and a light bulb holding portion 27. It penetrates and protrudes forward. Further, a fan 28 for releasing internal heat to the outside is provided at the rear end of the light source case 15.

  As shown in FIG. 1, the fiber cable 23 connected to the conductor 22 of the light source unit 2 and exiting from the unit body 1 is attached to the outside of each of the light pole 5, the first arm 6, and the second arm 7, and is flexible. Light that is connected to the light head 4 through the tube 11 and is generated by the xenon lamp 16 of the light source unit 2 is transmitted to the light head 4 through the fiber cable 23. The fiber cable 23 may be attached so as to be exposed to the first arm 6 and the second arm 7, and the straight portion is covered with a cover 8 attached to the first arm 6 and the second arm 10 as shown in FIG. It ’s better. The fiber cable 23 may pass through the light pole 3, the first arm 6, and the second arm 10, but since it is currently impossible to bend the optical fiber at right angles, the light pole 3 and the first arm 6 can be bent. And between the first arm 6 and the second arm 10, it is important not to force the optical fiber 3 by taking out the fiber cable 23.

  As shown in FIG. 4, the light head 4 is provided with three light emitting portions 14 at regular intervals, and each of the light emitting portions 14a, 14b, 14c is shown in FIG. In this way, the end portions of the fiber cable 23 introduced into the light head 4 via the flexible tube 11 are connected to the light source unit 2 by connecting the three-branch optical fiber cables 23c, 23d, and 23e divided into three parts. . As shown in FIG. 6, each light emitting section 14 is configured such that each three-branch optical fiber cable 23 c, 23 d, 23 e of the fiber cable 23 is fixed to the holding cylinder 31 of the first lens 30 with a screw 32 via a conductor 29. The holding cylinder 31 is fixed to the holding cylinder 34 of the second lens 33 with screws 36. As shown in FIG. 7, the shadowless effect of the holding cylinder 34, that is, the second lens 33 is increased by increasing the pitch p.

  That is, since the light emitting portions 14 are arranged at three locations and there is a central portion that emits light, even the inside of the oral cavity in a bag shape with the lips can enter the back. At the same time, 70% of the light quantity of the headlight 4 can be irradiated.

  In the above configuration, as shown in FIG. 8, the light emitted from each of the three light emitting portions 14a, 14b, and 14c is maintained at 50 mm and the distance from the light emitting portion to the irradiating portion is 600 mm. In the case of three-lamp parallel irradiation that keeps the direction of the light in parallel, an illuminance of 20,000 Lx or more is obtained, and each circular irradiation field 35 in the irradiated portion of the emitted light is in a range of a substantially radius indicated by hatching The polymerized state becomes a shadowless effect.

  Further, as shown in FIG. 9, the distance between the light emitting portions 14a, 14b, and 14c is 50 mm, the distance from the light emitting portion to the irradiating portion is maintained at 600 mm, and the emitted light from each position is intermediate 350 mm and 250 mm. In the case of a three-lamp cross-irradiation that irradiates in the direction intersecting at the position, an illuminance of 20,000 Lx or more is obtained in the same manner as described above, and the light emitted from each of the light emitting portions 14a, 14b, and 14c is irradiated. Each circular irradiation field 35 in the region is polymerized in the range of a substantially radius indicated by oblique lines as described above, and a shadowless effect is obtained.

  In addition, the superposition of the irradiation fields in the three-lamp parallel irradiation and the three-lamp cross irradiation is preferably in a range of a substantially radius between the irradiation fields. Moreover, when parallel irradiation and cross irradiation are compared, there is not much difference in the shadowless effect, but it should be selected depending on the object to be irradiated.

It is a perspective view which shows the whole dental unit which concerns on Example 1 of this invention. It is a perspective view which shows a unit main body partially fractured | ruptured. It is sectional drawing of a light source part. It is a perspective view which shows the part from a light source part to a light head. It is a perspective view which shows the light-projection part of a write head. It is sectional drawing of a light-projection part. It is the schematic which shows the example of lens arrangement | positioning of a light head. It is a figure which shows 3 lamp | ramp parallel irradiation. It is a figure which shows 3 lamp | ramp cross irradiation. It is explanatory drawing of the illuminating lamp with which the conventional dental unit was equipped. It is operation | movement explanatory drawing of a reflective mirror. It is a perspective view of a reflective mirror.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Unit main body 2 Light source part 3 Optical fiber 4 Light head 5 Light pole 6 1st arm 7 2nd arm 8 Cover 9 Dental treatment chair 11 Flexible tube 14 Light-emitting part 15 Light source case 16 Xenon lamp 17 Condensing mirror 21 Conductor receiver 22, 29 Conductor 23 Fiber cable 24, 32.36 Screw 25 Strut 26 Light bulb mounting plate 27 Light bulb holder 28 Fan 30 First lens 31, 34 Holding cylinder 33 Second lens 35 Circular irradiation field

Claims (1)

A light source unit including a xenon lamp as a light source, a unit main body including the light source unit, an optical fiber unit that guides irradiation light from the light source unit to a light head unit, and the optical fiber unit. And a light head part that can irradiate the irradiated part while dividing the irradiation light from the light source part into at least three parts, and a support part capable of moving and stopping the light head part in the horizontal and vertical directions. A dental unit characterized by that.

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