JP4496135B2 - Dental lighting device and dental medical device - Google Patents

Description

  The present invention provides a dental lighting device having a function of illuminating the oral cavity of a patient and a function of irradiating excitation light that emits fluorescence from a non-healthy part such as a carious part, a defect part, calculus or dental plaque of a tooth. In particular, the present invention relates to a dental illumination apparatus and a dental practice apparatus that can adjust the amount of illumination light when irradiated with excitation light.

  The dental lighting device is generally called a dental surgical light, and the dental medical device is composed of a surgical light, a diagnostic device, a device for controlling the operation of various treatment devices, and other devices. The The surgical light is attached to the tip of a hanger arm that can be swung up and down or horizontally, and is moved by an operator to illuminate the inside of the patient's oral cavity on the dental examination table. Recently, a dental treatment unit has been proposed and put into practical use that automatically adjusts the irradiation of the surgical light according to the status of the treatment work when the light of the surgical light affects the treatment work. It became so.

Patent Document 1 shows an example of the above-mentioned dental medical device, and when the photopolymerizer for photopolymerizing the composite resin is operated, the irradiation light quantity of the surgical light is automatically adjusted. It is a thing. In Patent Document 2, a dental light is controlled to be turned on / off by a non-contact switch.
JP 2003-10213 A No. 7-1125

  Recently, a light irradiator that can visually observe a non-healthy site by close-up by an optical action of specific irradiation light has been developed and used for dental diagnosis. That is, it is known that when a non-healthy part of a tooth is irradiated with light having a specific wavelength (for example, 400 ± 30 nm) as excitation light, a specific fluorescence is emitted from the unhealthy part. The state of the unsound part that cannot be seen is highlighted by fluorescent radiation and is clearly visible. Therefore, a dedicated irradiator that emits excitation light has been developed and put into practical use. However, if the surgical light is turned on when using this irradiator, it is buried by the illumination light, and the fluorescent image is not clearly visible. For this reason, when operating the excitation light irradiator, the surgeon has to manually adjust the light quantity of the surgical light, which is accompanied by a mental burden and impairs the efficiency of medical work. Patent Document 1 automatically adjusts the irradiation light amount of the surgical light when operating the photopolymerizer, but does not automatically adjust the irradiation light amount of the surgical light when operating the excitation light irradiation device. Nor does it suggest that.

  The present invention has been made in view of the above, and provides a novel dental lighting device and dental medical device capable of automatically adjusting the amount of illumination light in conjunction with the irradiation of excitation light. is there.

The illumination device for dental practice according to the invention of claim 1 is a dental illumination device for illuminating a person's oral cavity, and the fluorescent light is emitted from the illumination light irradiation means, the illumination light quantity control unit, and the unhealthy part in the oral cavity. Excitation light irradiation means for irradiating excitation light to radiate, a detection control section for detecting the state of the excitation light irradiation means, and a signal for outputting a signal to the illumination light quantity control section based on the state detection information of the detection control section The excitation light irradiation means includes a switch for turning on / off the excitation light, and the state detection information by the detection control unit is on / off information of the switch, and the illumination light quantity The control unit controls the light amount of the illumination light to be lowered based on switch-on information by the detection control unit while the illumination light is on .

Te present invention odor, switches for switching the lighting-off of the excitation light, like the lighting device of Patent Document 2, by a non-contact switch, may enhance hygiene. Further, in this case, as in the invention of claim 2 , the illumination light quantity control unit turns off the switch after the light quantity of the illumination light is reduced by the switch on information by the detection control unit when the illumination light is on. It is desirable to control the amount of illumination light to return to the original state based on information. Further, as in the invention of claim 3 , the switch for turning on / off the excitation light is configured in the form of an adapter that is separated from the excitation light irradiation means and is attached to a medical instrument such as a handpiece. Thus, the surgeon can turn on / off the excitation light and adjust the amount of illumination light in conjunction with the excitation light at his / her hand, thereby further improving the convenience of the surgeon.

According to a fourth aspect of the present invention, a dental care apparatus includes a dental illumination device that illuminates a patient's oral cavity, and an excitation light irradiation device that irradiates excitation light so as to emit fluorescence from an unhealthy part in the oral cavity. A dental care apparatus, wherein the illumination device includes illumination light irradiation means and an illumination light amount control unit, while the excitation light irradiation device includes excitation light irradiation including a switch for turning on / off excitation light. A detector, a detection control unit that detects on / off information of the switch as a state of the irradiator, and a signal output unit that outputs a signal to the illumination light amount control unit based on the state detection information of the detection control unit the illumination light quantity control section is characterized in that the illumination light is controlled so as to lower the amount of the illumination light by switching on information by the detection control unit in the lighting.

In the invention of the claims 4, switches for switching the lighting-off of the excitation light, like the lighting device of Patent Document 2, by a non-contact switch, may enhance hygiene. Further, in this case, as in the invention according to claim 5 , the illumination light quantity control unit turns off the switch after the light quantity of the illumination light is reduced by the switch on information by the detection control unit when the illumination light is on. It is desirable to control the amount of illumination light to return to the original state based on information. Further, as in the invention of claim 6 , the switch for turning on / off the excitation light is configured in the form of an adapter that is separated from the excitation light irradiation device and is attached to a medical instrument such as a handpiece. Thus, the surgeon can turn on / off the excitation light and adjust the amount of illumination light in conjunction with the excitation light at his / her hand, thereby further improving the convenience of the surgeon.

Further, a dental care apparatus according to the invention of claim 7 includes a dental illumination device that illuminates the patient's oral cavity, and an excitation light irradiation device that irradiates excitation light so as to emit fluorescence from an unhealthy part in the oral cavity. A dental treatment apparatus, wherein the illumination device includes illumination light irradiation means and an illumination light amount control unit, while the excitation light irradiation device includes an excitation light irradiator that is detachably installed in a dedicated holder; A detection control unit that is provided in the dedicated holder and detects an installation state of the excitation light irradiator in the dedicated holder as a state of the irradiator, and a signal to the illumination light amount control unit based on the state detection information of the detection control unit The illumination light quantity control unit lowers the illumination light quantity according to information that the excitation light irradiator by the detection control part is removed from the dedicated holder while the illumination light is on. Characterized by cormorants control. In this case, as in the eighth aspect of the invention, the illumination light quantity control unit determines the illumination light quantity based on information that the excitation light irradiator by the detection control unit is removed from the dedicated holder while the illumination light is on. It is desirable to control the amount of illumination light to return to the original state based on the installation information on the dedicated holder of the excitation light irradiator after being lowered .

  In the above invention, reducing the amount of illumination light is used as a concept that includes reducing the amount of illumination light (decreasing the light intensity) or reducing it to zero.

According to the present invention, illumination light quantity control unit is either adapted to regulate et a light amount of the illumination light based on the state detection information of the excitation light emitting means, for turning on and off the excitation Okoshiko The switch on / off information can be used as the state detection information of the excitation light irradiation means, and the light amount of the illumination light can be reduced by the switch on information by the detection control unit when the illumination light is turned on . The switch for switching on / off the excitation light may be a non-contact switch. More specifically, as in the second aspect of the invention, the light amount of the illumination light is determined based on the switch-off information after the light amount of the illumination light is lowered by the on-information of the excitation light lighting switch when the illumination light is lit. It can be set as the structure controlled to return to this state. Further, by separating the switch for switching on / off of the excitation light from the excitation light irradiation means as in the invention of claim 3 , for example, it is provided on a dental handpiece and the excitation light is turned on / off at the operator's hand. It can be set as the structure which switches light extinction.

  Therefore, it is possible to automatically adjust the amount of illumination light at the time of excitation light irradiation, and the fluorescence image of the unhealthy part due to the excitation light irradiation is not affected by the illumination light and is automatically displayed in a clearly visible state. Since it is set, the observation medical treatment of the unhealthy part is performed smoothly and accurately. In addition, since the excitation light irradiating means constitutes one component of the lighting device, it can be incorporated into an existing lighting device (such as a surgical light), and there is no need to separately secure an installation location of the excitation light irradiating means.

According to the invention of claim 4 , since the excitation light irradiation device including the excitation light irradiator is separated from the illumination device, the layout of the dental care unit including the illumination device and the excitation light irradiation device is taken into consideration. Thus, the excitation light irradiator can be arbitrarily installed at a position where it can be easily handled. Further, if the excitation light irradiator is configured as a handpiece type, the excitation light can be irradiated by approaching the target site of the tooth by a hand-held operation by the operator.

Then, the same, illumination light quantity control section, et al or is adapted to adjust the light amount of illumination light based on the state of excitation light irradiator, on-off information of the switch for turning on and off the excitation Okoshiko Is the state detection information of the excitation light irradiator, and the light amount of the illumination light can be reduced by the switch-on information by the detection control unit when the illumination light is on . The switch for switching on / off the excitation light may be a non-contact switch. More specifically, as in the invention of claim 5 , the light amount of the illumination light is obtained based on the switch-off information after the light amount of the illumination light is lowered by the on-information of the excitation light lighting switch when the illumination light is lit. It can be set as the structure controlled to return to this state. Further, the switch for switching on / off of the excitation light is separated from the excitation light irradiation device as in the invention of claim 6 so that it is provided on the handpiece for dental treatment, for example, and the excitation light is turned on at the operator's hand. -It can be configured to switch off. Therefore, it is possible to automatically adjust the amount of illumination light at the time of excitation light irradiation, and the fluorescence image of the unhealthy part due to the excitation light irradiation is not affected by the illumination light and is automatically displayed in a clearly visible state. Since it is set, the observation medical treatment of the unhealthy part is performed smoothly and accurately.

According to the invention of claim 7 and claim 8, the state detection information of the excitation light irradiator is set as the installation state information of the excitation light irradiator in the dedicated holder, and the excitation light irradiator is removed from the dedicated holder. If the control is performed so that the light amount of the illumination light is lowered by the information that it has been reduced, and further , the light amount of the illumination light is returned to the original state by the setting information on the dedicated holder of the excitation light irradiator after being lowered. The amount of illumination light can be adjusted automatically only by handling the excitation light irradiator (pickup or return operation of the excitation light irradiator), thus reducing the mental burden on the operator and smoothing the medical work. Figured.

  Hereinafter, the best mode of the present invention will be described with reference to the drawings. 1 is a schematic overall perspective view showing an example of a dental care unit including a dental lighting device of the present invention, FIG. 2 is an enlarged view of a portion X in FIG. 1, FIG. 3 is a side view of FIG. FIG. 5 is an explanatory view showing the state of a tooth visually observed when light is irradiated, and FIG. 5 is a view showing a spectral distribution of light (fluorescence) emitted from the tooth when the tooth is irradiated with excitation light having a wavelength of 406 nm, FIG. FIGS. 7A, 7B and 7C are time charts showing the relationship between excitation light irradiation and the amount of illumination light, and FIG. 8 shows another embodiment. 1 is a diagram similar to FIG. 1, FIG. 9 is an explanatory diagram showing a use state in the embodiment, FIGS. 10A and 10B are schematic perspective views of main parts showing a modification of the embodiment, and FIG. 11 is a modification. FIG. 12 is a schematic partial perspective view of a second modification of the embodiment, and FIG. It is a schematic perspective view of a main part in one and some modification of the second embodiment.

  In the dental practice unit A shown in FIG. 1, a dental examination table 1 includes a base 1a, a seat plate 1b installed on the base 1a so as to be movable up and down, and one end of the seat plate 1b that can be raised and lowered. It consists of a back plate 1c provided and a headrest 1d installed to be tiltable at the undulating end of the back plate 1c. A tray table 2 is supported on a side portion of the back plate 1c through a horizontally swingable support arm 2a so as to be horizontally movable. The support arm 2a incorporates a mechanism (not shown) (for example, a parallel link mechanism) that allows the tray table 2 to always maintain a horizontal position regardless of the undulation position of the back plate 1c. Further, various handpieces 3 such as an air turbine handpiece, a micromotor handpiece, a three-way syringe and the like used for dental treatment are held on the shoulder portion of the back plate 1c so as to be freely drawn out.

  A gargle spitton 4 is installed on the side of the dental examination table 1, and an operating light 5 as an illumination device of the present invention is disposed adjacent to the spitn 4. The articulated hanger arm 50a is connected to the upper end of the column 50 so as to be movable up and down and horizontally with respect to the column 50 and the dental examination table 1. The surgical light 5 is connected to the tip of the hanger arm 50a. , Can be swung freely. A foot controller 6 is provided on the side floor of the dental examination table 1, and the foot controller 6 includes raising / lowering, raising / lowering and tilting operation switches for the examination table 1, operation switches for various handpieces 3, etc. These on / off controls are performed by the stepping operation of the person or the like.

  The surgical light 5 has a function of irradiating illumination light and excitation light. The surgeon operates the hanger arm 50a to pull the surgical light 5 and swing the surgical light 5 itself. The position and orientation are set so that the irradiation light is directed into the oral cavity of the patient on the dental examination table 1. As shown in detail in FIGS. 2 and 3, the surgical light 5 is attached to a frame 5b having a mirror surface plate 5a composed of a plurality of mirror segments on the curved inner surface, and in the vicinity of the curved center portion of the mirror surface plate 5a. A light source 7 composed of a plurality of LEDs and a control box 10 for controlling on / off of the light source 7, and 50 c of an arcuate support bracket 50 b that is rotatably connected to the tip of the hanger arm 50 a. Thus, the surgical light 5 is swingably supported with respect to the hanger arm 50b. The mirror surface plate 5a functions as a shadowless lamp by randomly reflecting irradiated light from a plurality of mirror segments. At both ends of the frame 5b, a handle 5c that can be manually operated by an operator is formed.

  The light source 7 includes four white LEDs 8 as light emission sources constituting the illumination light irradiation means 80 (see FIG. 6) and four purple colors as light emission sources constituting the excitation light irradiation means 90 (see FIG. 6). The LEDs 9 (cross hatched portions in FIG. 2) are arranged in a staggered manner as shown in FIG. The control box 10 includes a main switch 10a, a white LED (illumination light) switch 8a, and a purple LED (excitation light) switch 9a. The white LED 8 is an illumination light LED having a broad wavelength characteristic, while the purple LED 9 is an excitation light LED that emits light having a wavelength of 400 ± 30 nm. When the white switch 8a is turned on after the main switch 10a is turned on, the four white LEDs 8 are turned on, and when the purple LED switch 9a is turned on, the four purple LEDs 9 are turned on. When both switches 8a and 9a are turned on, all the LEDs 8 and 9 are lit. In this example, the illumination light irradiation means 80 is configured by the white LED 8 and the white LED switch 8a, and the excitation light irradiation means 90 is configured by the purple LED 9 and the purple LED switch 9a (see FIG. 6). Note that the on / off switch described here may be a non-contact switch (not shown) to improve hygiene. As the installation location of the non-contact switch, for example, the frame 5b of the surgical light 5 can be considered.

  At the time of dentistry, the surgeon grasps and pulls the handle 5c, positions the surgical light 5 in the patient's oral cavity, turns on the main switch 10a, turns on the white LED switch 8a, and turns white. The LED 8 is turned on to illuminate the oral cavity. The inside of the oral cavity is observed while illuminating the inside of the oral cavity with illumination light, the purple LED switch 9a is turned on, the purple LED 9 is turned on, the irradiation field is directed to the target tooth, and the excitation light emitted from the purple LED 9 is directed to the target tooth (non- Irradiate the healthy part. In this case, the surrounding state of the target tooth is clearly recognized by the illumination light, the positional relationship of the target tooth is accurately grasped, and the unhealthy part of the target tooth (caries, calculus, Close-up unhealthy parts are clearly visible due to the unique fluorescence emitted from the dental plaque. If the white LED 8 is lit when the purple LED 9 is lit, the fluorescent image by the excitation light is buried by the illumination light and may become unclear, so in the present invention, as described later, the white LED 8 is purple while the lit LED 9 is lit. When the LED 9 is turned on, the white LED 8 is controlled to reduce the amount of light emitted.

  FIG. 4 shows a fluorescent image that is visualized when excitation light is applied to a tooth t having an unhealthy part, and shows an unhealthy part t1 existing on the surface of the tooth t and an unhealthy part t2 existing inside. All of them emit orange light to orange light, and their state and position are clearly visible. Therefore, the surgeon can take appropriate medical treatment by, for example, operating the various handpieces 3 on the unhealthy parts t1 and t2 that are close-up while being irradiated with the excitation light. At this time, when the fluorescent image becomes unclear due to the reflected light of the excitation light from the peripheral parts of the unhealthy parts t1, t2, the operator wears glasses or goggles equipped with a filter function for cutting the excitation light. Then, the fluorescent image can be visually recognized and observed more clearly. Moreover, it can utilize as an explanatory tool with respect to a patient by image | photographing with an appropriate imaging means provided with the light reception filter of such a wavelength characteristic, and reproducing | regenerating and displaying this on a monitor display.

  FIG. 5 shows a spectral distribution of light (fluorescence) emitted from a tooth when the tooth is irradiated with excitation light having a wavelength of 406 nm. In the figure, in the case of healthy teeth, the radiation intensity I tends to gradually decrease with an increase in the fluorescence wavelength, but in the unhealthy parts such as caries, dental plaque, and tartar, The radiation intensity I with respect to shows a fluorescence spectrum having peaks at three locations (636 nm, 673 nm, and 700 nm). In addition, according to experiments, it has been confirmed that orange to orange fluorescence is also emitted. Therefore, if a portion emitting such fluorescence in the observation target portion can be visually recognized, it is accurately determined that the portion is an unhealthy portion such as caries.

  6 (a) and 6 (b) show block diagrams of illumination light quantity control, and the excitation light irradiation means 90 includes a purple LED 9 as an excitation light emission part, and an excitation light switch 9a as an emission control part thereof. The excitation light irradiating means 90 is provided with a detection control unit 9b for detecting on / off of the excitation light switch 9a and a signal output unit 9c for outputting a detection signal. The excitation light switch 9a may be provided integrally with the excitation light irradiation means 90 as shown in FIG. 6 (a), or as a separate body from the excitation light irradiation means as shown in FIG. 6 (b). You may make it the structure which communicates by radio | wireless with 9c. The illumination light irradiating means 80 includes a white LED 8 as an illumination light emitting part and an illumination light switch 8a as the light emission control part. The illumination light irradiating means 80 is provided with an illumination light quantity control part 8b. ing. The surgical light (illumination device) 5 is configured by the illumination light irradiation means 80, the illumination light quantity control unit 8b, the excitation light irradiation means 90, the detection control unit 9b, and the signal output unit 9c.

  Thus, in the dental treatment as described above, the illumination light switch 8a is operated to turn on the white LED 8, and the irradiation light is irradiated into the oral cavity, the excitation light switch 9a is operated, and the purple LED 9 is turned on. Then, the on information of the excitation light switch 9a is detected by the detection control unit 9b and input to the output signal unit 9c. The output signal unit 9c outputs this ON information as an ON signal, and the illumination light amount control unit 8b controls to decrease the light emission amount of the white LED 8 in a predetermined down mode when the ON signal is input. Therefore, when the purple LED 9 is turned on and the excitation light is irradiated, the influence that the fluorescent image is buried in the illumination light is avoided, and the fluorescent image of the unhealthy part due to the irradiation of the excitation light is clearly visible and observed. When the excitation light switch 9a is turned off, the off information is detected by the detection control unit 9b, and is input as an off signal from the output signal unit 9c to the illumination light amount control unit 8b. It is returned to the state.

  FIGS. 7A, 7B, and 7C show various patterns of the time chart of the excitation light irradiation and the illumination light quantity. The vertical axis shows the light emission quantity and the horizontal axis shows the time. In FIG. 7A, when the white LED 8 as the illumination light source is turned on and the purple LED 9 as the excitation light source is turned on, the amount of light emitted from the white LED 8 is immediately reduced to a predetermined value, and the purple LED 9 is being turned on. This low state is maintained. When the purple LED 9 is turned off, the amount of light emitted from the white LED 8 immediately returns to the original state.

  In FIG. 7B, when the white LED 8 is turned on and the purple LED 9 is turned on, the white LED 8 is immediately turned off, and the purple LED 9 is kept in the off state while being turned on. When the purple LED 9 is turned off, the white LED 8 is turned on, and the light emission amount returns to the original state in the preset slow-up mode. As described above, when the light emission amount of the white LED 8 is returned to the original state, if the patient is slowed up, the patient can respond to the light amount change without feeling uncomfortable. In particular, since the LED has a high light emission intensity, such a slow-up mode is desirably employed in order to reduce the glare of the patient.

  In FIG. 7C, when the white LED 8 is turned on and the purple LED 9 is turned on, the light emission amount of the white LED 8 is reduced to a predetermined value in a preset slow-down mode, and the purple LED 9 is turned on. Maintained low. When the purple LED 9 is turned off, the light emission amount of the white LED 8 returns to the original state in the preset slow-up mode. Thus, if the light quantity control of the illumination light is performed in the slow-down mode and the slow-up mode, the patient can receive medical care without accompanying discomfort due to a sudden light quantity change. Although not shown in the figure, even when the purple LED 9 is turned on / off, if the light emission amount is slowed up or slowed down, the patient can adapt to the light amount change and receive a more comfortable medical treatment. it can.

  The light amount control of the illumination light is performed based on a light amount down or up mode set in advance in the illumination light amount control unit 8b using the on / off information of the excitation light switch 9a as a trigger. By simply turning on and off the switch 9a, the amount of illumination light is automatically adjusted, and switching between medical treatment under fluorescence observation by irradiation of excitation light and normal medical treatment by illumination light is made smooth and suitable for each. Irradiation state is maintained and the mental burden on the operator is reduced.

  FIG. 8 and FIG. 9 show another embodiment of the dental practice unit B and its use state. The unit table 20 is horizontally moved to the side of the back plate 1c of the dental examination table 1 through a support arm 20a that can be swung horizontally. Supported as possible. A handpiece holder 30 is attached to the side portion of the unit table 20, and various handpieces 3... In addition, a handpiece type excitation light irradiator 91 is latched and held in the handpiece holder 30 in the same manner as the other handpieces 3. The supply hose 3a for the working medium (electricity, compressed air, water, etc.) of the various handpieces 3 ... and the power supply cable 91a of the excitation light irradiator 91 are provided by these supply sources ( (Not shown) is led out from the other side of the unit table 20 through the support arm 20a, and is connected to the various handpieces 3 and the base of the excitation light irradiator 91.

  The head part of the excitation light irradiator 91 is provided with a purple LED 9 similar to the above as a light source of excitation light, and the grip part is provided with a switch 9a for excitation light as a light emission control part of excitation light. Yes. The grip unit incorporates a detection control unit and a signal output unit (equivalent to the detection control unit 9b and the signal output unit 9c in FIG. 6) that detect on / off information of the excitation light switch 9a. An excitation light irradiation device is configured by the light irradiator 91, the excitation light switch 9a, the detection control unit, and the signal output unit.

  As the excitation light irradiator 91 of the present embodiment, a diagnostic imaging device as proposed in Japanese Patent Application Laid-Open No. 2004-237081 relating to the present applicant is desirably employed. That is, the excitation light irradiator 91 incorporates an imaging means (not shown) in addition to the excitation light irradiation means as described above, and takes a fluorescence image of an unhealthy site caused by the excitation light irradiation with the imaging means. The imaging data is reproduced and displayed on the monitor display 11 installed on the column 50 of the surgical light 51 as shown in FIGS. 8 and 9, for example, and used as a tool for explaining the patient, or a personal computer (not shown). The data can be saved as chart data.

  Also, above the dental examination table 1, a surgical light (illuminating device) 51 provided with a plurality of white LEDs 8 constituting illumination light irradiation means as a light source of illumination light is supported by the column 50 and the hanger arm 50a as described above. ing. The shadowless lamp 51 includes a frame 5b made of a mirror plate 5a similar to the shadowless lamp 5 of the first embodiment, and has an arcuate support bracket 50b that is rotatably provided at the tip of the hanger arm 50a. As shown in FIG. The plurality of white LEDs 8 are attached in the vicinity of the center of curvature of the mirror plate 5a. A control box 10 is provided on the lower side of the frame 5b. The control box 10 includes an illumination light switch 8a as an illumination light emission control unit, and an illumination light amount control unit (the illumination light amount control unit 8b in FIG. 6). Equivalent). The white LED 8 and the illumination light switch 8a constitute illumination light irradiation means (equivalent to the illumination light irradiation means 80 in FIG. 6).

  In the dental practice unit B of the present embodiment, when performing observational treatment in the oral cavity, as shown in FIG. 9, the operator D seats the patient P on the dental examination table 1 and draws the shadowless lamp 51. Then, the patient P is positioned so as to face the oral cavity. Then, the illumination light switch 8a is turned on, the white LED 8 is turned on, and the illumination light is irradiated into the oral cavity of the patient. When it is necessary to irradiate the unhealthy part with the excitation light while continuing the illumination light irradiation, the excitation light irradiator 91 is taken out from the handpiece holder 30 and the excitation light switch 9a is turned on. This switch-on information is detected by the detection control unit 9b shown in FIG. 6, and is input from the signal output unit 9c to the illumination light quantity control unit 8b, and the light quantity of the white LED 8 as the illumination light source is reduced. When the excitation light switch 9a is turned off, the light quantity of the white LED 8 is controlled to return to the original state based on the switch-off information. At this time, an imaging switch (not shown) provided in the excitation light irradiator 91 is turned on, and the imaging data can be reproduced / displayed on the monitor display 11 as shown in FIG.

  The sequence of excitation light irradiation and illumination light amount adjustment in this embodiment is also based on various time charts as shown in FIG. In this case as well, the excitation light switch 9a is used as a trigger based on the light quantity down or up mode preset in the illumination light quantity control unit 8b. Presence / absence detecting means (not shown) is provided, and the light amount of the illumination light is lowered by the information that the excitation light irradiator 91 has been removed by the detection means, and the same light amount is obtained by the installation information of the excitation light irradiator 91 thereafter. It can also be configured to return to the original state.

  FIGS. 10A and 10B show a modification of the second embodiment, and show an example in which the same excitation light irradiator 91 as described above is detachably installed in the dedicated holder 12. The dedicated holder 12 is placed on the unit table 20 or a peripheral cabinet (not shown) or the like at a position where it is easy for the operator to handle. And a holding base 12b that holds the grip portion of the excitation light irradiator 91. And the detection switch 12c is provided in the holding surface of the holding stand 12b, and the presence or absence of the excitation light irradiation device 91 is detected. That is, the detection switch 12c detects information on whether or not the excitation light irradiator 91 is placed on or removed from the holding base 12b, and a detection control unit (detection in FIG. 6) built in the base 12a. The detection information by the control unit 9b) is sent from the signal output unit (equivalent to the signal output unit 9c) built in the instrument base 12a via the cable 12d connected to the instrument base 12a. A detection signal is output to the illumination light quantity control unit (equivalent to the illumination light quantity control unit 8b in FIG. 6).

  Therefore, based on the detection information of the detection switch 12c, when the excitation light irradiator 91 is removed from the holding base 12b of the dedicated holder 12 while irradiating the illumination light with the shadowless lamp 51, the amount of illumination light is reduced. Moreover, when the excitation light irradiator 91 is installed on the holding base 12b, it can be controlled to return the light amount of the illumination light to the original state. Thus, if the purple LED 9 is turned on by turning on the excitation light switch 9a after the excitation light irradiator 91 is removed and the excitation light is irradiated to the unhealthy part, the illumination light is not affected by the illumination light. A fluorescent image can be visually recognized and observed. The sequence of such excitation light irradiation and illumination light amount adjustment is also based on various time charts as shown in FIG. In this case, the amount of illumination light may be adjusted based on AND information between the on / off information of the excitation light switch 9a and the detection information of the detection switch 12c.

  In the example shown in FIG. 11, the holding base 12b is detachably attached to the instrument base 12a of the dedicated holder 12 via a magnet 12e. A detection switch 12c is provided on the holding surface of the holding table 12b as described above. Further, the holding table 12b has a detection control unit (equivalent to the detection control unit 9b in FIG. 6) and a signal output unit (same signal output unit 9c). Is built-in). The output signal from this signal output unit is wirelessly output to the illumination light quantity control unit of the surgical light 51 (see FIGS. 8 and 9). Accordingly, the holding table 12b is not limited to the above-described table 12a, but is attached by an attracting action of the magnet 12e on a magnetic metal portion of a cabinet drawer (not shown), for example, an operator around the dental examination table 1 that is easy to handle. Then, the excitation light irradiator 91 can be held at that position.

  Also in this example, if the excitation light irradiator 91 is removed from the holding table 12b while the illumination light is turned on, the amount of illumination light decreases, and if the excitation light irradiator 91 is installed on the holding table 12b, the amount of illumination light is reduced. It can be controlled to return to the original state. Therefore, at the time of excitation light irradiation, the influence of illumination light can be avoided, and the fluorescent image of the unhealthy part can be clearly seen and observed. The sequence of the excitation light irradiation and the illumination light amount adjustment is also based on various time charts as shown in FIG. 7 as described above. Furthermore, in this example, since the holding table 12b can be installed at an arbitrary position, the operator's medical work can be widened, which contributes to the efficiency of the medical work.

  The example shown in FIG. 12 shows a second modification of the present embodiment, and shows an example in which excitation light irradiation means 90 is installed on the shoulder of the medical table 1 separately from the surgical light 51. . In this example, the switch 9a is operated to irradiate excitation light from the excitation light irradiator 91, and a detection control unit (equivalent to the detection control unit 9b in FIG. 6) and a signal output unit (same signal output). (Equivalent to the unit 9c) is built in the excitation light irradiator 91 or the treatment table 1. The output signal from the signal output unit is output to the illumination light amount control unit of the surgical light 51 through wiring in the medical table or wirelessly. Therefore, at the time of excitation light irradiation, the influence of illumination light can be avoided, and the fluorescent image of the unhealthy part can be clearly seen and observed. The sequence of the excitation light irradiation and the illumination light amount adjustment is also based on various time charts as shown in FIG. 7 as described above.

  In each of the above-described embodiments, as shown in FIG. 13, the excitation light irradiation switch 9a may be an adapter type for providing a dental medical instrument such as various handpieces. Thereby, the surgeon can turn on / off the excitation light irradiation and adjust the amount of illumination light accompanying it, which is very convenient.

  In each of the above embodiments, as the light source 7 for illumination light or excitation light, any one of a halogen lamp, a metal halide lamp, a xenon lamp, a mercury lamp, a laser diode, a semiconductor laser, a solid state laser oscillator, and a laser oscillator is used in addition to the LED. Can be adopted. When a laser oscillator is used, it is necessary to guide the light from each separately installed laser oscillation unit to each irradiation unit with an appropriate light guide. Also, the LEDs are not limited to those of one wavelength, and a plurality of LEDs that emit light of different wavelengths may be arranged to emit light simultaneously or selectively, or output adjustment may be performed using a bare chip. Anyway.

  Furthermore, it is also possible to direct almost all light from the light source to a predetermined irradiation area by combining a reflecting member and a lens (see Japanese Patent Application Laid-Open No. 2004-355852 relating to the present applicant). Further, the foot controller 6 may be provided with a lighting on / off switch for illumination light or excitation light. In addition, although the example in which the illumination device is a surgical light has been described, the illumination device without the surgical light function, the illumination device that irradiates in a spot manner, and further fixed to the side of the back plate 1c of the dental examination table 1 It may be a lighting device supported by a flexible support member or a room lamp.

It is a schematic whole perspective view which shows an example of the dental treatment unit of this invention. It is an enlarged view of the X section in FIG. FIG. 3 is a side view of FIG. 2. It is explanatory drawing which shows the state of the tooth visually recognized when irradiated with excitation light. It is a figure which shows the spectrum distribution of the light (fluorescence) radiated | emitted from a tooth | bowl when an excitation light with a wavelength of 406 nm is irradiated to a tooth | gear. (A) and (b) are control block diagrams of the illumination light quantity. (A) (b) (c) is a time chart which shows the relationship between excitation light irradiation and the light quantity of illumination light. It is a figure similar to FIG. 1 of another embodiment. It is explanatory drawing which shows the use condition in the same embodiment. (A) (b) is a schematic perspective view of the principal part which shows the modification of the embodiment. It is a schematic perspective view of the principal part which shows another example of the modification. It is a general | schematic fragmentary perspective view of the 2nd modification of the embodiment. It is a schematic perspective view of the principal part in the partial modification of 1st and 2nd embodiment.

Explanation of symbols

1 Dental examination table 5 Surgical lamp (lighting device)
51 surgical light (lighting device)
8 White LED (illumination light source)
8a Illumination light switch 8b Illumination light quantity control unit 80 Illumination light irradiation means 9 Purple LED (excitation light source)
9a Switch for excitation light 9b Detection control part 9c Signal output part 90 Excitation light irradiation means 91 Excitation light irradiator 12 Dedicated holder A Dental care unit B Dental care unit

Claims (8)

A dental lighting device that illuminates the patient's mouth,
Illumination light irradiation means;
An illumination light intensity control unit;
Excitation light irradiation means for irradiating excitation light to radiate fluorescence from an unhealthy part in the oral cavity,
A detection control unit for detecting the state of the excitation light irradiation means;
A signal output unit that outputs a signal to the illumination light quantity control unit based on the state detection information of the detection control unit,
The excitation light irradiation means includes a switch for turning on / off the excitation light, and the state detection information by the detection control unit is on / off information of the switch,
The illumination light amount control unit controls the illumination light device to reduce the light amount of the illumination light based on switch-on information by the detection control unit when the illumination light is turned on . The dental lighting device according to claim 1,
The illumination light quantity control unit controls the illumination light quantity to return to the original state based on the switch-off information after the illumination light quantity is lowered by the switch-on information by the detection control section when the illumination light is on. dental lighting device comprising a to Turkey. The dental lighting device according to claim 1 or 2 ,
A dental illumination device, wherein a switch for turning on / off the excitation light is provided separately from the excitation light irradiation means. A dental medical device comprising a dental illumination device that illuminates the patient's oral cavity, and an excitation light irradiation device that irradiates excitation light to emit fluorescence from an unhealthy part in the oral cavity,
The illumination device includes illumination light irradiation means and an illumination light amount control unit,
On the other hand, the excitation light irradiation device includes an excitation light irradiator having a switch for turning on / off excitation light, a detection control unit that detects on / off information of the switch as a state of the irradiator, and the detection A signal output unit that outputs a signal to the illumination light amount control unit based on the state detection information of the control unit,
The dental light quantity control unit is configured to control the illumination light amount to be reduced based on switch-on information by the detection control unit while the illumination light is on . The dental practice apparatus according to claim 4 ,
The illumination light quantity control unit controls the illumination light quantity to return to the original state based on the switch-off information after the illumination light quantity is lowered by the switch-on information by the detection control section when the illumination light is on. dental treatment device comprising a to Turkey. In the dental care apparatus according to claim 4 or 5 ,
A switch for turning on and off the excitation light is provided separately from the excitation light irradiation device. A dental medical device comprising a dental illumination device that illuminates the patient's oral cavity, and an excitation light irradiation device that irradiates excitation light to emit fluorescence from an unhealthy part in the oral cavity,
The illumination device includes illumination light irradiation means and an illumination light amount control unit,
On the other hand, the excitation light irradiation device detects an installation state of the excitation light irradiator provided in the dedicated holder and the excitation light irradiator in the dedicated holder as the state of the irradiator. A detection control unit, and a signal output unit that outputs a signal to the illumination light amount control unit based on the state detection information of the detection control unit,
The illumination light amount control unit controls to reduce the light amount of the illumination light according to information that the excitation light irradiator by the detection control unit is removed from the dedicated holder while the illumination light is turned on. . The dental care apparatus according to claim 7 ,
The illumination light quantity control unit is directed to the dedicated holder of the excitation light irradiator after reducing the light quantity of the illumination light based on the information that the excitation light irradiator is removed from the dedicated holder by the detection control unit while the illumination light is on. A dental medical device characterized by controlling the amount of illumination light to return to the original state according to the installation information.

Images