JP2005304600A - Vital observation instrument, oral cavity imaging device, medical head illumination belt device and dental mirror - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vital observation instrument, an oral cavity imaging device, a medical head illumination belt device, and a dental mirror having a simple constitution, allowing a user to clearly view a fluorescence image of a lesion in a clear image of the circumference of the affected part and easily used by operators such as a dentist and a physician and a general user at home. <P>SOLUTION: This vital observation instrument is provided with an illumination means 2 for illuminating an exciting light radiating a fluorescence from the lesion of an observation object site, and an observation part 3 observing the radiation light image from the observation object site. The observation part 3 is provided with a light receiving filter part 5 transmitting the light of from a wavelength band deflected from the central wavelength of the exciting light to the central side of the visible light by 20-50 nm, to the visible light side band and the observation part 3 is so constituted as to observe the radiation light image by parts of the fluorescence emitted from the observation object site and the reflected exciting light. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a dental caries situation in the oral cavity, a defect part, a lesion part, a calculus or plaque adhesion situation, a root canal part, a gum, a cheek, a tongue lesion part, or an otolaryngological diagnosis, a rectum A living body observation device including a medical observation device used for an operator to perform treatment, diagnosis, and dermatology diagnosis of a tumor, and further, an oral cavity capable of clearly visualizing and further photographing a lesion state The present invention relates to an internal photographing device, a medical irradiation frame device, or a dental mirror. Further, the present invention relates to a living body observation device, an intraoral photographing apparatus, and a dental mirror that allow general users to observe calculus adhesion and caries progress in the oral cavity of themselves and their family at home, as well as the skin.

  For example, an intraoral imaging apparatus for diagnosing the intraoral area needs to be operated by being placed in the mouth, so that the imaging means portion needs to be configured compactly. That is, conventionally, such an intraoral imaging apparatus has a light source that irradiates light to a diagnosis target, a CCD imaging means, and the like arranged in a very small size at the tip of a main body held and supported by fingers. For example, a structure shown in Patent Document 1 is known.

  The intraoral imaging device according to the prior art described in Patent Document 1 is elongated as a whole and has a thin tip, thereby facilitating insertion into the oral cavity and using white LEDs as illumination light. Thus, it is possible to take an image while brightly illuminating the inside of the oral cavity, and there is an advantage that it is possible to easily take an image of a desired portion in the narrow oral cavity. However, in such an intraoral imaging apparatus, the surface condition of the teeth and the oral cavity can only be imaged under irradiation with visible light (wavelength of about 380 to 760 nm), and the situation inside the surface layer and dental caries It was not possible to accurately grasp the adhesion status of tartar.

On the other hand, Patent Document 2 irradiates the teeth with excitation light having a wavelength of 405 nm, and observes the specific fluorescence emitted from the lesion part of the teeth through glasses with a filter having a transmission characteristic of 550 nm. An apparatus capable of diagnosis is disclosed. Patent Document 3 discloses a filter that irradiates a tooth with excitation light having a wavelength of 360 to 420 nm, absorbs or reflects light having a wavelength of 620 nm or less, and emits specific fluorescence emitted from a lesion part of the tooth as described above. An apparatus for observation is provided.
Japanese Patent Laid-Open No. 11-047092 JP 59-137037 A Japanese Examined Patent Publication No. 6-73531

  The apparatus disclosed in Patent Document 2 guides light from a light source such as a mercury lamp to a probe through a fiber, irradiates the affected part such as a tooth with light from the probe, and passes through protective glasses equipped with a filter. Although it is used for observation and diagnosis of the state of the affected area, it requires a fiber and a separate assistant to operate the probe, and the apparatus is large and the efficiency of the diagnostic work is difficult to achieve. there were. In addition, the device disclosed in Patent Document 3 guides light from a light source through a light guide, irradiates a tooth, and observes radiated light from the tooth with glasses with a filter. In this case as well, a light guide is required, and the apparatus becomes large, and there are problems in terms of improving the efficiency of diagnosis work.

  Furthermore, in the devices disclosed in Patent Documents 2 and 3, it is possible to determine whether a specific part is a carious part or a healthy part, but only detection information when irradiating excitation light of a specific wavelength is obtained. Therefore, the situation of the caries portion is not grasped, and it cannot be used as illumination at the time of treatment. In other words, even if a local carious site can be detected, it is not possible to obtain information that can determine the position or situation of relative caries in the entire tooth image.

  That is, the intensity of the fluorescence emitted from the lesion due to the irradiation of the excitation light is weak, and this fluorescence image is buried (masked) by the excitation light reflected from the site to be observed and other disturbance light, and the fluorescence image is not clearly recognized. For this reason, in Patent Documents 2 and 3, the disturbance light is observed through a filter that blocks as much as possible. However, when disturbance light is blocked by the filter in this way, the fluorescence image is extracted and recognized clearly, but the minimum illumination light necessary for observation is also blocked, so it is indicated by fluorescence. The part other than the lesion becomes dark and the outline becomes unclear. Also, depending on the filter used, an unnatural image lacking blue may be obtained. In dermatology, acne bacteria are actually detected using excitation light, but there are similar problems.

  In addition, since the fluorescence due to the excitation light is very weak light, for example, when illumination such as a white light source is applied, it is buried in the reflected light of the illumination light and is difficult to detect. In addition, since the excitation light is generally in a narrow band, if it is only an image of the excitation light and fluorescence, only the fluorescent part is extracted, the original object itself is not clear, and faithful hues cannot be reproduced. is there. In general, most of the excitation light is cut when it is received, so that the obtained image is only a fluorescent image, and the background is dark and the image is very difficult to see. From such an image, it is almost impossible to grasp the color and texture of the object, and the contour level can be visually recognized.

  Therefore, whether or not just diagnosing only the affected area from this image, when observing the situation around the affected area from this image or using it for explanation, it is an image far from the actual color tone. I felt uncomfortable. Therefore, in the medical field, fluorescent images and illumination light are used separately, imaged with a camera such as a CCD camera, and image processing is performed to display the images in duplicate, and the affected area is easily processed and observed on a monitor. It was. For home use, it has been desired to provide an inexpensive and simple configuration.

  In order to solve the above-mentioned problems, a visible light image without a filter by irradiation with white light and a fluorescent image with a filter by irradiation with excitation light are acquired in a time-sharing manner, and this is superimposed to synthesize an image. Although it is conceivable to obtain a diagnostic image in which a fluorescent image of a lesion is clearly visible in a clear contour image, a plurality of irradiation means switching means, filter switching means, time-division automatic Construction of a sequence Further complicated image processing is required, which is not only expensive, but too expensive for home use and cannot be provided to the market.

  The present invention has been made in view of the above, and with a simple configuration, a fluorescent image of a lesioned part can be clearly seen in a clear image around the affected part, and a home from an operator such as a dentist or a doctor. The present invention provides a medical observation device, an intraoral imaging device, a medical irradiation frame device, and a dental mirror that can be easily used by general users.

  The living body observation apparatus according to the invention of claim 1 includes an irradiating means for irradiating excitation light that radiates fluorescence from a lesioned part of an observation target part, and an observation part for observing a radiation light image from the observation target part. The observation unit is provided with a light receiving filter unit that transmits light in a visible light side band from a wavelength region shifted by 20 to 50 nm to the center side of visible light from the center wavelength of the excitation light. It is possible to observe a radiation image by a part of the fluorescence generated from the site and the reflected excitation light. The emitted light image referred to here means both a fluorescent image and a reflected light image generated when the affected area is irradiated with excitation light.

  Specific examples of the relationship between the center wavelength of the excitation light and the wavelength characteristic (transmission characteristic) of the light-receiving filter unit are preferably combinations as in the second to fourth aspects of the invention. That is, when the central wavelength of the excitation light is 365 nm and the light receiving filter unit transmits light having a wavelength of 385 to 415 nm or more, the central wavelength of the excitation light is 405 nm and the light receiving filter unit has a wavelength of 425 to 425 nm. In the case of transmitting light having a wavelength of 475 nm or more, the center wavelength of the excitation light irradiated from the irradiation means is 470 nm, and the light receiving filter section transmits light having a wavelength of 490 to 540 nm or more. Note that the center wavelength of the excitation light varies somewhat, and about ± 15 nm is allowed. When the central wavelength of the excitation light is in the infrared light region, the light receiving filter unit is set so as to transmit light having a wavelength smaller than the position shifted by 20 to 50 nm to the visible light side from the central wavelength.

  The living body observation apparatus according to the invention of claim 5 is characterized in that the irradiating means comprises any of an LED, a laser diode, a semiconductor laser, a solid-state laser oscillator, and a laser oscillator. Furthermore, the living body observation apparatus according to the invention of claim 6 is characterized in that the irradiation means comprises a light source comprising any one of a halogen lamp, a metal halide lamp, a xenon lamp, a krypton lamp, a mercury lamp or a sodium lamp, and an irradiation optical filter. It comprises, and it is characterized by irradiating only an excitation light component with the optical filter for irradiation among the lights irradiated from said light source.

  A seventh aspect of the present invention is an intraoral photographing apparatus that embodies the above-described invention, and is equipped with a main body that can be supported by fingers, the irradiation means according to any one of the first to fourth aspects, and the main body. Imaging means as an observing section, the imaging means comprising a solid-state imaging device (CCD or MOS) and the light receiving filter section according to any one of claims 1 to 4, wherein the light receiving filter When the excitation light from the irradiation unit is irradiated onto the observation target part, the part transmits the fluorescence generated from the observation target part and a part of the reflected excitation light.

  The invention of claim 8 is characterized in that, in the intraoral photographing apparatus, the irradiating means further has a function of irradiating light of a plurality of different wavelengths, that is, light such as white light, infrared light, ultraviolet light, and the like. It is characterized by comprising switching means for enabling selection of the type of irradiation light emitted from the irradiation means. At this time, the type of the light receiving filter is changed or attached / removed according to the light source to be used.

  The invention of claim 9 is a medical irradiation frame device embodied in the invention described above, a head mounting means for mounting on the surgeon's head, and a claim attached to the head mounting means. Item 5. The irradiation unit according to any one of Items 1 to 4 and an observation unit that is provided in the head mounting unit and observes a radiation image from an observation target region. The observation unit is any one of Items 1 to 4. The light receiving filter section includes the fluorescence generated from the observation target part and the reflected excitation light when the observation target part is irradiated with the excitation light from the irradiation unit. It is characterized in that a part of it is transmitted.

  A tenth aspect of the present invention is the dental mirror according to the tenth aspect of the present invention. The main body is supported by fingers and can be inserted into the oral cavity, and the main body is attached to the main body. An irradiating means, and a mirror portion mounted on the front side portion of the main body, the mirror portion being an observation portion that reflects and observes a radiation image from a portion to be observed, and is provided on the surface thereof. 5. A light receiving filter unit according to any one of 1 to 4 is formed, and the light receiving filter unit emits fluorescence generated from the observation target part when the observation target part is irradiated with excitation light from the irradiation unit. And a portion of the reflected excitation light is transmitted.

  According to the first aspect of the present invention, the observation unit includes a light receiving filter unit that transmits light in a visible light side band from a wavelength region shifted by 20 to 50 nm toward the center side of the visible light band from the central wavelength of the excitation light. Since it is provided, the observation unit can observe the emitted light image by a part of the excitation light reflected from the observation target part as well as the fluorescence generated from the observation target part.

  That is, the irradiated excitation light is light having a single wavelength, but has a certain width with respect to the center wavelength, and the width extends from the center wavelength to a range exceeding 20 to 50 nm. Thus, the light receiving filter section transmits light in the visible light side band from a wavelength region shifted by 20 to 50 nm from the central wavelength of the excitation light to the center side of the visible light band. A part of the excitation light in the width portion is transmitted. Therefore, a part of the excitation light reflected by the observation target part is transmitted through the light receiving filter part and visually recognized as a reflected light image in the observation part. This reflected light image is equivalent to an image obtained by irradiating a part of the excitation light as illumination light, and is recognized as a contour image of the observation target part.

  On the other hand, the fluorescence from the lesion part based on the excitation light irradiation appears in the visible light region and is visually recognized by the observation part through the light receiving filter part. In addition, since most of the excitation light reflected from the observation target site is blocked (absorbed or reflected) by the light receiving filter section, this fluorescent image is visually recognized without being masked by the excitation light. And since the fluorescent image of the lesioned part is visually recognized in the whole image (contour image) based on the transmission of the partially excited reflected light as described above, the relative position and the degree of the target part of the lesioned part are grasped, Image information with extremely high practical value can be obtained for appropriate treatment.

  According to the second to fourth aspects of the present invention, when the central wavelengths of the excitation light are 365 nm, 405 nm, and 470 nm, the respective light receiving filter portions are light having a wavelength of 385 to 415 nm or more, light having a wavelength of 425 to 475 nm or more, Since it transmits light of 490 to 540 nm or more, most of the excitation light reflected from the site to be observed is blocked, but part of the light within the range of the wavelength of each excitation light is transmitted, and this transmission The outline image of the site to be observed is visually recognized by the observation unit by the excited light. In addition, the fluorescent image from the lesion is also visually recognized with less masking by the excitation light.

  According to invention of Claim 5, since the width | variety of the wavelength irradiated from an irradiation means is restricted, it can comprise without using the optical filter for irradiation. If these general-purpose products are used, an inexpensive configuration can be achieved. In particular, if an LED, a laser diode, a semiconductor laser, or a solid-state laser oscillator is employed, the device can be reduced in size and weight.

  According to the invention of claim 6, the irradiating means is a light source comprising white light or a broad broad wavelength close to white light, a halogen lamp, a metal halide lamp, a xenon lamp, a krypton lamp, a mercury lamp, or a sodium lamp. And an irradiation optical filter, when observing a fluorescent image of a lesion, the irradiation optical filter is attached to extract and irradiate only the excitation light component. If the filter is removed for irradiation, these irradiation means can be used for illumination.

  According to the invention of claim 7, the front side portion of the main body is inserted into the oral cavity, and the fluorescence emitted from the lesioned part of the observation site based on the irradiation of the excitation light from the irradiating means is received by the imaging means. Diagnostic image information can be obtained. Since the imaging means includes the light receiving filter unit having the wavelength characteristics as described above, the fluorescence image from the lesioned part is extracted and formed on the solid-state imaging device, and reflected by the observation target region. A part of the reflected light image of the excitation light is also transmitted and imaged on the solid-state imaging device. Therefore, if an optical image converted into an electrical signal by a solid-state imaging device is displayed on a television monitor or the like for observation, both an outline image and an image of a lesion can be visually recognized, and an image with high diagnostic value. Information can be obtained.

  By adopting a solid-state imaging device (CCD or MOS), it is possible to quickly obtain good captured image information at a low cost. In addition, since it can be provided as a small, convenient and easy-to-handle product, and can be manufactured in a small size, at low cost, and safely, specifications with limited functions are optimal for home use. In addition, as long as the imaging means has a wide spectral characteristic capable of imaging light with a wavelength of, for example, 300 to 800 nm, it is possible to capture a fluorescent region, and a wide range of imaging from ultraviolet light to infrared light including visible light is possible. Needless to say, you can. Of course, when special fluorescence detection is required, an image pickup means having a wide spectral characteristic dedicated to a wider range than the above wavelength range may be selected.

  According to invention of Claim 8, the said irradiation means is further equipped with the function to irradiate the light of several types of different wavelengths, and selects several light, such as white light, infrared light, and ultraviolet light, by a switching means. Since it is configured to irradiate, illumination light or excitation light can be selected as necessary. In addition, the type of the light receiving filter can be changed according to the type of light to be used, or can be used after being attached or detached. There may be two types of light, or three or more types.

  According to the ninth aspect of the present invention, the contour image of the site to be observed and the fluorescent image of the lesioned part are similarly observed by the irradiation of the excitation light from the irradiation means and the transmission characteristics of the light receiving filter unit in the observation unit. The image information with high diagnostic value can be obtained. Moreover, since the irradiation means is attached to the head mounting means, if the irradiation field of the irradiation means is set so as to face the operator's line of sight, the irradiation means will always be the site to be observed during the surgeon's diagnosis work. Therefore, there is no need to make adjustments each time, as in the case of irradiation means installed separately. In addition, since both hands of the operator are free, the diagnosis and treatment work can be performed very smoothly. In this way, it is possible to accurately observe the state of the lesioned part while having a compact configuration, and synergistically with ease of use, it can be provided as a medical irradiation frame device with extremely high practical value. it can.

  According to the invention of claim 10, since the light receiving filter portion having the same wavelength characteristic as described above is formed in the mirror portion as the observation portion, the observation portion associated with the irradiation of the excitation light from the irradiation means is formed. In the radiated light image, the fluorescence from the lesioned part is transmitted through the light receiving filter part and reflected by the mirror part, and is visually recognized as a fluorescent image. Since most of the excitation light reflected from the observation target site is blocked (absorbed) by the light receiving filter unit, the fluorescent image is visually recognized without being masked by these excitation lights.

  In addition, since a part of the reflected excitation light is transmitted through the light receiving filter part and reflected by the mirror part and visually recognized as a reflected light image, the outline of the observation target part is also visually recognized, and the relative position of the lesion part in the observation target part The degree can be accurately observed and grasped by the mirror part. In this way, by adding a simple configuration to the conventional dental mirror, it is possible to obtain diagnostic information with extremely high diagnostic value that cannot be obtained in the past. The light-receiving filter part is formed by coating the surface of the mirror part with the coating agent having the above-mentioned wavelength characteristic (transmission characteristic) or by sticking a film-like filter member having the same wavelength characteristic. The

  Hereinafter, the best mode of the present invention will be described with reference to the drawings. In the following, Examples 1 to 5 are examples in which the living body observation apparatus of the present invention is embodied in an intraoral photographing apparatus, and Examples 6 to 14 are examples in which the biological irradiation device is embodied in Example 15. Shows examples embodied in dental mirrors.

  FIG. 1 is a plan view showing an example of an intraoral imaging apparatus according to the present invention, FIG. 2 is a longitudinal sectional view along the longitudinal direction of the imaging apparatus main body, FIG. 3 is an enlarged bottom view of a front side portion of the main body, FIG. FIG. 5 is a longitudinal sectional view taken along line XX in FIG. 3, and FIG. The intraoral imaging apparatus A in the figure includes an irradiation unit 2 and an imaging unit 4 as an observation unit 3 in a front side portion 1a of a dental handpiece-shaped main body (casing) 1 that can be supported by fingers. This intraoral imaging apparatus A is suitable mainly for diagnosis of dental caries, a defect part, a lesioned part, calculus, plaque, biofilm adhesion degree, etc. in the oral cavity. In addition, it is possible to recognize the lesion inside the tooth surface layer by photographing the internal surface condition of the tooth (the situation inside about 1 mm from the surface), and if the cordless specification is used, the cordless specification signals to the control box H (see Fig. 2) Can be transmitted and the photographed image can be printed out and taken out. It is also possible to provide a zoom mechanism for zooming in and zooming out and an autofocus function.

  The main casing 1 includes a synthetic resin upper case 1b, a lower case 1c, and a front end side case 1d. The lower case 1c is fixed to the upper case 1b by four screws 1e. The body casing 1 is formed with a front side portion 1a having a shape in which a body portion supported by a finger is relatively thick and once squeezed so that the tip end side becomes thinner, and then bulges left and right and upward. The imaging means 4 includes a solid-state imaging device 4a such as a CCD or a MOS, and a light-receiving filter unit 5 for guiding light of a specific wavelength to the solid-state imaging device 4a. The front end side case 1d is detachably mounted. Reference numeral 1f denotes reinforcing ribs integrally formed inside the cases 1b to 1d.

  As shown in FIG. 5, the front end side case 1d is fitted with a tongue piece 1g formed on the base side inside the lower case 1c, and a hook piece 1i formed on the vertical wall portion 1h on the front end side. The upper case 1b is mounted by being fitted into an engaging portion 1j formed at a corresponding position. To remove the hook piece 1i from the engaging portion 1j, the tip side of the tip case 1d is moved away from the upper case 1b, and then the tip case 1d is moved away from the lower case 1c (FIG. 5). To the left).

  Since the light receiving filter portion 5 is formed in the front end side case 1d detachably attached to the main body casing 1, it can be replaced with another front end side case 1d having the light receiving filter portion 5 having different wavelength characteristics. In FIG. 5, the irradiation unit 2 is installed in the upper case 1 b together with the imaging unit 4. However, the irradiation unit 2 may be attached to the front end side case 1 d and replaced with the light receiving filter unit 5 for each front end side case 1 d. In this case, an electrical contact for supplying electricity to the irradiating means 2 may be configured to be detachable.

  A photographing switch 6, a light source selection switch 7, and an image selection switch 8 are formed on the upper surface of the main body casing 1, and the main body casing 1 drives the irradiation means 2, the imaging means 4, and the like. A power source 10 such as a secondary battery, a wireless transmitter 11 for transmitting information imaged by the imaging means 4 to the control box H, and a microcomputer 12 are provided. That is, the intraoral imaging apparatus A is configured as a cordless type that is easy to operate without drawing a lead wire. If the cordless type is not used, the photographing switch 6 may be provided at a place other than the main body casing 1, such as a control box H or a foot pedal (not shown) connected to the intraoral photographing apparatus A via a lead wire.

  As shown in FIGS. 3 and 4, an imaging unit 4, an irradiating unit 2, and a light receiving filter unit 5 constituting the imaging unit 4 are arranged in the front side portion 1 a. The imaging means 4 is composed of the solid-state imaging device 4a such as CCD or MOS and the light receiving filter section 5 as described above. When the irradiation light from the irradiation means 2 is irradiated on the observation target part such as a tooth, the observation means 4 It receives light emitted from the target region and captures a predetermined diagnostic image, and is arranged at the center position of the front portion 1a when viewed in the vertical direction.

  As shown in FIG. 3, the irradiating means 2 is composed of a total of six LEDs, two of each of three types of LEDs (light emitting diodes): an excitation light emitting LED 2a as a light emitting unit, a white light LED 2b, and an infrared light LED 2c. The imaging element 4a is arranged at substantially equal angles so as to be rotationally symmetrical around the optical axis of the imaging element 4a. Thereby, it is set as the structure which can irradiate a tooth | gear with the light from the irradiation means 2 directly. The LEDs 2a, 2b, and 2c are opposed to each other by 180 degrees in the circumferential direction centering on the solid-state imaging device 4a, but are not limited to the combination of the arrangement state and the irradiation light source.

  The irradiation means 2 may be the excitation light emitting LED 2a alone, and may be configured by appropriately combining the white light LED 2b, the infrared light LED 2c, or the ultraviolet light LED, and a plurality of these light emitting elements. The part can be selectively made to emit light by a switching means (not shown). As the irradiation means 2, in addition to LEDs, laser oscillators (He-Ne lasers, krypton lasers, semiconductor lasers such as dye lasers, laser diodes or solid laser oscillators, laser oscillators), halogen lamps, krypton lamps, mercury lamps, sodium lamps Either a xenon lamp or a metal halide lamp can be used. If an LED, a laser diode, or the like is used, the size and weight can be reduced.

  If a halogen lamp, krypton lamp, mercury lamp, sodium lamp, xenon lamp or metal halide lamp is used as the irradiation means, an irradiation filter is installed in front of the lamp to extract only the light having the wavelength of the excitation light component. May be irradiated. Since the light emitted from the lamp light source has white light or a broad broad wavelength close to white light, these excitation light irradiation means are used for illumination by removing the irradiation optical filter and performing irradiation. be able to. Further, it may be a wavelength switching type LED or a laser oscillator. When a laser oscillator is used, it is necessary to guide the light from the laser oscillation part in the main body to the tip irradiation port of the front side portion 1a with an appropriate light guide.

  It is desirable that the LED and the laser oscillator have not only infrared, near infrared, ultraviolet, and near ultraviolet but also red, orange, purple, blue, and green regions that are visible light regions. In particular, as the excitation light emitting LED, those that emit light having a central wavelength of 365 nm, 405 nm, or 470 nm are preferably employed, and these can be obtained at low cost from those that are generally commercially available. Further, as the wavelength of the laser beam that emits the excitation light, a laser beam having a center wavelength of 635 nm or 780 nm is employed.

  As shown in FIGS. 2 to 5, the light-receiving filter unit 5 is attached to the front end side case 1 d by being detachably and replaceably fitted, and is a size that covers the lower side of the solid-state imaging device 4 a, and has a substantially circular plate shape. It is said that. The front end side case 1d itself can also be attached to and detached from the lower part 1 of the main body. The light-receiving filter unit 5 allows only light in a specific wavelength range to pass through the light-receiving unit of the solid-state imaging device 4a, but the peripheral part corresponding to the irradiation unit 2 allows the light of the irradiation unit 2 to pass through as it is. Or the periphery of the light from the irradiating means 2 is made to be an irradiation filter that passes only light in a specific wavelength range and irradiates the object to be diagnosed, or the light receiving filter and the irradiation filter It is also possible to make a composite filter having both functions. Further, the light receiving filter or the irradiation light filter and the lens may be used in combination, or these filters and the lens may be configured integrally. Further, these lens surfaces may be used after being coated with a filter function.

  The light receiving filter unit 5 emits excitation light from the irradiation unit 2, emits specific fluorescence from the lesioned part, and observes and captures the fluorescence image with the imaging unit 4. Those having a transmission characteristic such that light in a visible light side band is transmitted from a wavelength region shifted by 20 to 50 nm to the side are employed. That is, when the irradiation means 2 emits excitation light having a center wavelength of 365 nm, 405 nm, or 470 nm, light having a wavelength of 385 to 415 nm or more, light having a wavelength of 425 to 475 nm or more, and light having a wavelength of 490 to 540 nm or more are transmitted. What to do is adopted.

  FIG. 6 is a diagram showing a use state of the intraoral imaging apparatus A. As shown in the figure, the intraoral imaging apparatus A inserts the front side portion 1a into the oral cavity as shown in FIG. The diagnosis can be performed while the image taken by the image pickup means 4 is displayed on the monitor screen M (see FIG. 2) connected to the control box H. Then, if there is a region of interest, by operating the photographing switch 6 in a state where the portion is being photographed, the still image of the portion is stored in the main casing 1 or the memory 13 of the control box H, and if necessary. Printing can be performed by a printer (not shown) connected to the control box H. In this intraoral imaging apparatus A, the irradiation light from the irradiation means 2 can be directly irradiated onto the teeth t.

  Tooth with dental calculus, dental plaque, or carious part (lesioned part) is irradiated with excitation light having a central wavelength of 405 nm from the excitation light emitting LED 2a of the irradiation means 2 and transmits only light having a wavelength of 425 to 475 nm or more. When the light-receiving filter unit 5 is mounted on the light-receiving unit of the imaging unit 4 and photographed, these lesions in the diagnostic image are visually recognized in orange to orange colors. FIG. 7 shows a printout image of the tooth t photographed by the imaging means 4 of the intraoral photographing apparatus A. The above-mentioned fluorescence is emitted from the lesioned part by the irradiation of the excitation light, and this fluorescent image is transmitted through the light receiving filter unit 5 and formed on the solid-state imaging device 4a.

  Further, since most of the excitation light reflected at the site other than the lesioned part is blocked (reflected or absorbed) by the light receiving filter unit 5, the fluorescent image is clearly visible without being masked by the excitation light. Is done. Further, part of the reflected excitation light passes through the light receiving filter unit 5 and is gently formed on the solid-state imaging device 4a as a contour image of the tooth t. Therefore, in the image displayed on the monitor M and the printout image of FIG. 7, the tooth contour image is also visually blurred, and the lesioned portion (fluorescent region) image that exhibits orange to orange in the contour image. Is clearly visible. In FIG. 7, the broken line is the lesion.

  FIG. 8 shows a spectral distribution of light (fluorescence) emitted from a tooth when the tooth is irradiated with excitation light having a wavelength of 405 nm. In the figure, in the case of a healthy tooth, the radiation intensity I tends to gradually decrease with an increase in the fluorescence wavelength. In the case of a carious tooth, the radiation intensity I with respect to the fluorescence wavelength is 3 A fluorescence spectrum having a peak at a position (636 nm, 673 nm, 700 nm) is exhibited. Further, 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 a carious portion.

  Further, FIG. 9 shows that when the tooth is irradiated with light having a wavelength of 488 nm, the healthy tooth of light emitted from the tooth (healthy enamel) and the carious tooth (carious enamel) Is a graph (fluorescence intensity comparison graph). As can be seen from this graph, in general, when the excitation light to be irradiated has a different wavelength, the intensity of the generated fluorescence varies between a healthy tooth and a carious tooth. In the case of a tooth, it is understood that when the excitation light having a wavelength of 405 nm is irradiated as shown in FIG. In general, the fluorescence generated from the carious part or the like by irradiating excitation light is buried in the illumination light and difficult to view when the affected part such as caries is irradiated with very weak light at the same time. Furthermore, in order to view very weak fluorescence, it is necessary to look in a dark place, and the entire tissue of the observation / diagnostic object level cannot be seen clearly as seen under normal natural light or white light. When there was no light, the surrounding area of the affected area and the background tissue were not visible. Therefore, it was necessary to be able to see where the affected part was around the affected part.

  FIG. 10 is a diagram showing the relationship between the wavelength distribution characteristic of the excitation light irradiated from the irradiation unit 2 and the transmission characteristic of the light receiving filter unit 5. In the figure, a shows the wavelength distribution characteristic of the excitation light having a center wavelength of 405 nm, and b shows the transmission characteristic curve of the light receiving filter unit 5 used correspondingly. That is, the light-receiving filter unit 5 transmits light having a wavelength longer than the transmission characteristic curve b, that is, the light on the center side of visible light (the white arrow indicated band). An LED or the like as a light emitting unit that emits excitation light is designed to emit light having a single wavelength, but in practice, it is inevitable that the wavelength distribution characteristics have a certain width as shown in the figure. Therefore, if the light-receiving filter unit 5 transmits only light having a wavelength of 425 to 475 nm or more as shown in the transmission characteristic curve b, a region c that transmits a part of the excitation light (the hatched line in the figure). Part).

  Thus, when the excitation light having the above wavelength is irradiated to the tooth t, fluorescence having wavelengths of 636 nm, 673 nm, and further 700 nm is emitted from the lesioned portion of the tooth t as shown in FIG. The light passes through the part 5 and forms an image on the solid-state imaging device 4a. Further, as is understood from the transmission characteristic curve b in FIG. 10, most of the excitation light reflected from the site other than the lesion part of the tooth t is blocked by the light receiving filter unit 5, but the excitation light belonging to the region c is To Penetrate. The reflected excitation light based on this region c acts as so-called illumination light, whereby the entire contour image of the tooth t is formed on the solid-state imaging device 4a. Therefore, it is possible to obtain image information with extremely high diagnostic value in which the fluorescence image of the lesioned part extracted without being masked by the reflected excitation light and the entire contour image are visually recognized.

  In the intraoral imaging apparatus A of the illustrated example, as described above, the irradiating means 2 is further provided with a white LED 2b and an infrared light LED 2c in addition to the excitation light emitting LED 2a. When the white LED 2b is used, for example, the light source selection switch 7 is selectively operated prior to diagnosis to turn on the white LED 2b and use it as illumination light for observing the observation target region and its surrounding state. At this time, the imaging means 4 is not driven (the image selection switch 8 is off), and the surgeon himself observes visually. Of course, the specification may be such that an image sensor is used for observation as a monitor image. The infrared LED 2c is used for observing cracks and the like in the deep part of the tooth by utilizing its strong penetrability. In this case, it is possible for the surgeon himself to observe the reflected infrared light image, but if the light receiving filter unit 5 transmits only infrared light, the extracted infrared light image is captured by the imaging means 4. It becomes clearer by this. An infrared filter or a filter that transmits light having a wavelength greater than about 450 nm does not affect the image so much and can be used sufficiently.

  The intraoral imaging apparatus A1 in FIG. 11 shows an example in which the irradiation means is detachable. The intraoral imaging apparatus A1 in the figure includes an irradiation means (LED) 2 for irradiating the observation target site with excitation light on the front side portion 1a of the main body casing 1 that can be supported by fingers, and an imaging means as the observation unit 3. 4 is provided. The imaging means 4 has a solid-state imaging device 4a similar to the above, and a light receiving filter for transmitting the fluorescence emitted from the lesioned part of the observation target site and a part of the reflected excitation light and guiding it to the solid-state imaging device 4a. Part 5. The irradiation means 2 is detachable from the front side portion 1a.

  That is, an annular receiving portion 5a that supports the light receiving filter portion 5 is formed immediately below the front end side case 1d and the solid-state imaging device 4a, and a plurality of receiving electrodes 14 are provided in the vicinity of the periphery of the receiving portion 5a. It is fixed. An annular support member 16 having a plurality of convex electrodes 15 that are in electrical contact with the receiving electrodes 14 corresponds to an annular mounting member 17 having a rubber inner diameter that is fixed to the front end side case 1d. A plurality of LEDs (irradiation means) 2 that are conductively connected to the respective convex electrodes 15 are attached to the lower surface side of the annular support member 16. Similarly to the above, the LED constituting the irradiation means 2 is an excitation light emitting LED that emits its specific fluorescence from the lesion when irradiated to the lesion. 14a is a lead wire for the irradiation means 2 or the solid-state imaging device 4a.

  Therefore, when the annular support member 16 is fitted into the annular mounting member 17 and mounted, each convex electrode 15 comes into contact with the corresponding receiving electrode 14 and becomes electrically conductive. On the other hand, when the annular support member 16 is removed from the annular mounting member 17, the conductive state between each convex electrode 15 and the receiving electrode 14 is interrupted. Therefore, replacement of the LED 2 and the like can be easily performed by attaching and detaching the support member 16 to and from the annular mounting member 17.

  According to the intraoral imaging apparatus A1, when the distal portion 1a is inserted into the oral cavity, the irradiation means (excitation light emitting LED) 2 is turned on and the excitation light is irradiated onto the observation target site, the lesion of the observation target site The part emits its specific fluorescence. Further, the irradiated excitation light is reflected at a site other than the lesioned part. These fluorescence and reflected excitation light radiated from the observation target part are directed to the light receiving filter unit 5, and in this light receiving filter unit 5, a part of the fluorescence and reflected excitation light (light in the region c in FIG. 10). The light is transmitted, guided to the solid-state imaging device 4a, and imaged. Therefore, as described above, clear image information with high diagnostic value obtained by combining the blurred contour image of the affected part by the reflected excitation light partially transmitted and the fluorescence image is obtained by the solid-state imaging device 4a.

  Note that it is also possible to make a part of the LEDs constituting the irradiation means 2 white LEDs and turn on only the white LEDs prior to diagnosis so that the entire observation target site can be observed. In this case, the imaging means 4 can be observed by the operator himself without driving the imaging means 4 as described above. Moreover, it is also possible to combine with an infrared light LED or an ultraviolet light LED so that irradiation according to the diagnostic purpose can be performed as described above. In this case, it is also possible to attach and detach and replace these separately prepared LEDs using a detachable mechanism of the irradiation means 2.

  The intraoral imaging apparatus A2 in FIG. 12 shows an example in which the irradiation means and the light receiving filter unit are integrated and detachable. That is, in the intraoral photographing apparatus A2 in the drawing, the irradiation means (LED) 2 and the light receiving filter portion 5 are integrally attached to the front side portion 1a in a detachable manner. The structure shown in FIG. 12 is basically the same as that shown in FIG. 11 except that the shape of the receiving portion 5a is changed to support both the irradiation means 2 and the light receiving filter portion 5. It is a structure. Since the other configuration is the same as the example shown in FIG. 11, the same reference numerals are given to the common parts, and the description thereof is omitted. The receiving portion 5a may be made of rubber, and the light receiving filter portion 5 may be detachably attached to the receiving portion 5a.

  In the intraoral photographing apparatus A2, the irradiation means 2 and the light receiving filter part 5 can be attached to the front side portion 1a as the receiving part 5a is attached to the annular attaching member 17, and the annular attaching member 17 of the receiving part 5a. The irradiating means 2 and the light receiving filter portion 5 can be removed from the front side portion 1a along with the removal from the front side. According to this structure, the irradiation means 2 having different irradiation characteristics (white light, infrared light, ultraviolet light, etc.) as well as those that emit excitation light are combined with the light receiving filter portion having the corresponding transmission characteristics. A plurality of receiving portions 5a are prepared, and by appropriately selecting and mounting these receiving portions 5a, in addition to a clear fluorescent image of a lesioned part, other image information according to the diagnostic purpose can be easily obtained, and various diagnoses can be obtained. Treatment is very efficient and accurate.

  The intraoral imaging apparatus A3 in FIG. 13 shows an example in which the imaging unit includes an optical path changing unit. In the intraoral imaging apparatus A3 in the figure, the solid-state imaging device 4a constituting the imaging means 4 as the observation unit 3 is in the front portion 1a of the main body casing 1 with its optical axis along the longitudinal direction of the main body casing 1 A mirror (or prism) 18 as an optical path changing means is attached to the inner surface at the front end side of the front side portion 1a so as to have an angle of about 45 degrees with respect to the optical axis. And the solid-state image pickup element 4a is a light guide 19 for imaging light. The light guide 19 is provided with a relay lens 20 and a relay lens 21 movable along the optical axis, and the mirror 18, the relay lenses 20 and 21, and a light receiving filter unit 5 described later are used to convert an optical image into a solid-state imaging device. An optical system for forming an image on 4a is formed, and this optical system and the solid-state imaging device 4a constitute the imaging means 4.

  The light receiving filter unit 5 is detachably mounted in the middle of the cylindrical front side portion 1 a and in the vicinity of the front side (tip side) of the relay lens 20. Reference numeral 5b denotes a cap for preventing the light receiving filter unit 5 from coming off. Therefore, if various light receiving filter portions having different wavelength characteristics are prepared, the filter can be easily replaced according to the diagnostic purpose. If an appropriate movement mechanism along the optical axis direction is added to the relay lens 21, a zoom mechanism is configured. The relay lenses 20 and 21 are shown as convex lenses in the drawing, but are not limited to convex lenses, and needless to say, any lenses may be used as long as they have a function of transmitting an optical image. Of course, image transmission means such as a light guide may be used.

  The front side portion 1a is formed with a light entrance opening 22 that opens in a direction substantially perpendicular to the optical axis, and the opening 22 and the light guide path 19 communicate with each other. An annular support member 23 in which a plurality of LEDs (irradiation means) 2 are spaced along the circumferential direction is detachably attached to the periphery of the opening 22. A male receiving electrode 24 corresponding to each LED 2 is formed on the back surface of the annular support member 23. When the annular support member 23 is mounted on the front side portion 1a, a female supply electrode 25 formed on the front side portion 1a. It is designed to be joined electrically. The fitting / joining relationship between the male and female electrodes 24 and 25 constitutes an attachment / detachment mechanism for the annular support member 23, and the irradiation means 2 can be attached with one touch.

  A plurality of types of the annular support members 23 can be prepared for each irradiation unit 2. For example, only the excitation light emitting LED, the combination of the excitation light emitting LED and the white LED, the infrared light LED or the ultraviolet light LED alone, and the appropriate combination of these. Also, a plurality of light receiving filter sections 5 having transmission characteristics corresponding to the characteristics of the irradiation means 2 used are prepared and appropriately selected and mounted. That is, when an excitation light emitting LED is used as the irradiating unit 2, the light receiving filter unit 5 blocks the main component of the excitation light as described above, but reflects specific fluorescence from the lesioned part and a part other than the lesioned part. Those having the characteristic of transmitting a part of the excited light are used. Due to the irradiation of the excitation light by the irradiation means 2 and the transmission characteristics of the light receiving filter unit 5, image information with high diagnostic value in which a fluorescent image and a contour image of a lesioned part are expressed as described above can be obtained. . When using ultraviolet light as illumination light, the light receiving filter is removed.

  Further, when the white light LED is used for illuminating the observation target region, the surgeon directly observes the observation target region without driving the imaging unit 4 or does not attach the light receiving filter unit 5, and visible light by the illumination. An image is formed on the solid-state imaging device 4a. In addition, when a visible light image is formed on the solid-state imaging device 4a with the light receiving filter unit 5 attached, the light receiving filter unit 5 has an image that lacks some color components. In many cases, usable images are obtained. Furthermore, in the case of using an infrared light LED or an ultraviolet light LED, a light receiving filter unit 5 that transmits only infrared light or ultraviolet light is used. Of course, a plurality of types of LEDs 2 are provided on the annular support member 23, and any one of these LEDs 2 is selectively irradiated, and the light receiving filter unit 5 having a wavelength characteristic corresponding to the selected LED 2 is selectively mounted. Is also possible. When a light receiving filter that transmits only infrared light or only ultraviolet light is used, it is difficult to obtain a satisfactory image unless the filter is removed during illumination of the white LED.

  Thus, the light irradiated from the irradiation unit 2 is irradiated to the observation target site such as a tooth, and the reflected light or fluorescence is reflected from the observation target unit according to the wavelength characteristic of the observation target site based on the type of the irradiation unit 2. Etc. are emitted. Optical image light based on these radiations enters the front portion 1 a from the opening 22, is reflected at 90 degrees by the mirror 18, passes through the light-receiving filter unit 5, travels through the light guide path 19, and is a relay lens. The light is condensed at 21 and 22 and imaged on the solid-state imaging device 4a. The mounting position of the light receiving filter unit 5 is not limited to the illustrated example, and any position is possible as long as it is on the light guide path 19. It goes without saying that other joining means can be employed in place of the male and female electrodes 24 and 25 by separately providing a means for connecting the electric wire to the irradiation means 2. Since other configurations are the same as described above, common portions are denoted by the same reference numerals, and description thereof is omitted.

  The intraoral imaging apparatus A4 of FIG. 14 shows an example in which the imaging means includes the optical path changing means as in the fourth embodiment, and the front side portion 1a is separable into the head portion 1a1 and the base portion 1a2. In addition, the same reference numerals are given to portions common to the fourth embodiment. That is, a mirror (or prism) 18 as an optical path changing means is attached to the inner surface of the cylindrical head portion 1a1 so as to have an angle of about 45 degrees with respect to the optical axis. In the base 1a2, a solid-state imaging device 4a that constitutes the imaging means 4 as the observation unit 3 is installed. When the head 1a1 and the base 1a2 are coupled via a coupling means 26 described later, The inner cylinder portion between the solid-state imaging device 4a serves as a light guide 19 for imaging light.

  A relay lens 20 is disposed in the head portion 1a1 along the light guide path 19, and a relay lens 21 movable along the optical axis is disposed in the base portion 1a2. The mirror 18, the relay lenses 20 and 21, and a postscript will be described later. The light receiving filter unit 5 forms an optical system for forming an optical image on the solid-state imaging device 4a. The optical system and the solid-state imaging device 4a constitute the imaging means 4. A light incident opening 22 that opens in a direction substantially perpendicular to the optical axis of the head portion 1a1 is formed, and the opening 22 and the light guide path 19 communicate with each other. In the vicinity of the front side (front end side) of the relay lens 20, the light receiving filter unit 5 is mounted.

  A plurality of LEDs (irradiation means) 2 are spaced along the circumferential direction around the opening 22. Each LED 2 is connected to a lead wire 27a embedded in the wall portion of the head portion 1a1, and this lead wire 27a is connected to a male electrode 27 protruding from the end surface on the base 1a2 side of the head portion 1a1. Yes. On the other hand, female electrodes 28 are recessed corresponding to the male electrodes 27 on the end surface of the base 1a2 on the head 1a1 side, and these female electrodes 28 are embedded in the wall of the base 1a2. It is connected to a power supply unit (not shown) in the main body casing 1 through lead wires 28a.

  The coupling means 26 of the head portion 1a1 and the base portion 1a2 is formed by the fitting relationship between the male electrode 27 ... and the female electrode 28 ..., and an electrical joint portion between both electrodes is formed. Therefore, the head portion 1a1 can be easily attached to and detached from the base portion 1a2. As a result, the male electrodes 27 and the female electrodes 28 are electrically joined, and the power is supplied from the power supply unit to the LED 2 by appropriate operation of the switch, and the startup light emission is performed.

  In the configuration as described above, if various head portions 1a1 are prepared by combining various light receiving filter portions 5 having different wavelength characteristics and various LEDs 2 having different light emission characteristics, these head portions 1a1 are combined. By appropriately selecting and attaching to the base 1a2 via the means 26, multi-faceted diagnostic imaging according to the state of the observation target region or the diagnostic purpose can be performed. Since such a use aspect is the same as that of Example 4, description of the effect | action etc. is omitted. Since other configurations are the same, common portions are denoted by the same reference numerals, and description thereof is omitted.

  15A and 15B are diagrams showing an example of the medical irradiation frame device of the present invention, where FIG. 15A is a conceptual diagram of the usage state, FIG. 15B is an enlarged sectional view of irradiation means, and FIG. 15C is a modification thereof. FIG. The medical irradiation frame device B in the figure is a head mounting means 29 to be mounted on the head of the operator D, an irradiation means 30 attached to the head mounting means 29, and a position in front of the eye of the operator D. And a translucent member 32. The translucent member 32 has a translucent portion that functions as the light receiving filter portion 33. The light receiving filter unit 33 will be described later. The head mounting means 29 shown in the figure is a fastening belt or an elastic band, but is not limited to this, and this kind of head mounting means known in the medical field can also be adopted.

  The irradiation means 30 is attached to a mounting base 34 provided at a position corresponding to the forehead portion of the operator D in the head mounting means 29 so that the irradiation field 30 can be adjusted. A lighting switch 34a for turning on / off the irradiation means 30 is provided on the side of the head mounting means 29 so that the operator D can easily operate. Here, the operator D is a concept including a doctor and an assistant or nurse who assists the diagnosis work. In addition, as a power source for the irradiation unit 30, a battery (not shown) attached in an appropriate place on the head mounting unit 29 in a replaceable manner is used.

  The irradiation means 30 in the figure is configured by packaging a light emitting portion and an optical member. That is, the irradiation means 30 in FIG. 15B includes an excitation light emitting LED 35a as the light emitting portion 35 disposed at the center of the bottom of the cup-shaped casing 30a, and a concave cone shape formed on the inner wall of the casing 30a. Mirror 30b and a condenser lens 30c attached to the front opening of the casing 30a. Reference numeral 30d denotes a cap nut for fixing the condenser lens 30c. Excitation light emitted from the LED 35a, including light reflected by the mirror 30b, passes through the condenser lens 30c and is irradiated to the observation target portion. Thus, the excitation light emitted from the LED 35a is irradiated to the observation target portion without waste by the mirror 30b and the condenser lens 30c. In the case of dental diagnosis, the LED 35a is most preferably an LED that emits light having a wavelength of 400 ± 30 nm, but is not limited to this, and an LED having other wavelength characteristics is also used depending on the purpose of diagnosis.

  In the case of the illustrated example, the position near the front of the eye socket of the operator D is the observation unit 31 below the front part of the head mounting unit 29, and the light receiving filter unit 33 is provided on the head mounting unit 29 of the observation unit 31. A functioning translucent member 32 is mounted. The light receiving filter unit 33 is similar to the light receiving filter unit 5 in the previous embodiment, and the fluorescence emitted from the lesioned part by the excitation light irradiation and a part of the excitation light reflected from the site to be observed (region in FIG. 10). (light belonging to c) is transmitted. Thus, at the time of observation, the operator D wears the head mounting means 29 on his / her head, turns on the switch 34a, and the irradiation field of the irradiation light from the light emitting unit 35 becomes the observation target site. Adjust to face. Then, the state of the observation target portion irradiated with the excitation light is observed through the translucent member 32.

  At this time, if there is a lesioned part in the observation target site, the lesioned part is excited and specific fluorescence is emitted to the lesioned part. Although this fluorescence passes through the translucent member 32 as the light receiving filter section 33, most of the reflected excitation light is blocked (reflected or absorbed) by the light receiving filter section 33, and therefore the fluorescence image is masked by the excitation light. It is clearly visible. In addition, since a part of the reflected excitation light passes through the light receiving filter unit 33, the outline of the observation target part is also visually recognized, and the operator D observes an image in which the fluorescence image and the outline image are expressed. This makes it possible to accurately grasp the state of the lesion, such as the position, degree, and quality.

  FIG. 15C shows the above modification, and a white LED 35 b is used as the light emitting unit 35. An irradiation filter 36 is detachably attached to the front opening of the casing 30a instead of the lens 30c. Reference numeral 36a denotes a cap nut for holding the irradiation filter 36 so as to be detachable from side to side. Reference numeral 36b denotes a knob for inserting and removing the irradiation filter 36. The irradiation filter 36 is a filter that transmits only the excitation light (light having a wavelength of 400 ± 30 nm in the case of dental examination) of the white light emitted from the white LED 35b. The irradiation filter 36 and the white LED 35b In combination, the same excitation light irradiation function as the irradiation means using the LED 35a is achieved. Therefore, when excitation light is irradiated to the observation target site through the irradiation filter 36, if there is a lesion in the observation target site, the specific fluorescence is emitted and the state is observed through the translucent member 32. .

  Since the irradiation filter 36 is detachable, at the start of observation, first, the white LED 35b is turned on without attaching the irradiation filter 36, and the observation target portion is illuminated like normal illumination light. It is possible to adopt an observation diagnosis method in which the entire target region is grasped, and then an irradiation filter 36 is attached to extract and observe the lesioned part. In this way, the position and extent of the lesion in the entire site to be observed can be accurately grasped, leading to improvement in subsequent treatment accuracy.

  Further, as the irradiation filter 36, a filter that transmits only infrared light or a filter that transmits only ultraviolet light is separately prepared, and by selectively mounting these, an observation target region corresponding to the diagnostic purpose as described above can be obtained. Observe and diversify diagnosis and treatment. Therefore, the irradiation filter 36 and its attachment / detachment mechanism in this case also have the function of a selection unit that selects the type of light emitted from the irradiation unit 35. Although omitted in FIG. 15C, it is not excluded that the condensing lens 30c and the irradiation filter 36 shown in FIG.

  The medical irradiation frame device B1 in FIG. 16 is an example in which the packaged irradiation means 30 includes a plurality of types (three types in the example) of LEDs (or bare chips) 35c, 35d, and 35e as the light emitting unit 35. It is shown. FIG. 16A is a conceptual diagram of the usage state, and FIG. 16B is a partially cutaway enlarged perspective view of the irradiation means 30. That is, the irradiating means 30 is provided with an excitation light emitting LED 35c, a white LED 35d, and an infrared light LED 35e on the bottom of a cup-shaped casing 30a as described above, and is swingably attached to the mounting base 34. The lighting switch 34b includes three switch units corresponding to the light emitting units 35, and the operator D can select and operate these switch units to irradiate desired light according to the diagnosis purpose.

  A mirror 30b similar to the above is provided on the inner wall portion of the casing 30a, and although omitted in the figure, it is also desirable to attach a similar condenser lens to the front opening. Needless to say, when the LEDs 35c, 35d and the LED 35e constituting the light emitting unit 35 are selectively emitted, it is possible to selectively attach and use an appropriate light receiving filter unit.

  Note that the number of light emitting units 35 is not limited to three, and may be two or four or more. Moreover, it is also possible to employ | adopt LED which emits the light of the specific wavelength other than the above also as the kind. Since other configurations and operations are the same as described above, common portions are denoted by the same reference numerals, and description thereof is omitted.

  The medical irradiation frame devices B2 and B3 in FIG. 17 show an example in which a plurality of light emitting units 35 are displaced and selectively irradiated. In the medical irradiation frame device B2 of FIG. 17A, three LEDs 35c, 35d, and 35e as the light emitting unit 35 are arranged in series on the horizontally long slide member (attachment base) 30e at equal intervals. The slide member 30e is attached to a receiving guide member 34d along the longitudinal direction of the head mounting means 29 so as to be slidable along the longitudinal direction. A set of electrical contacts (not shown) is provided at the longitudinal center of the receiving guide member 34d, and contacts (not shown) corresponding to the LEDs 35c, 35d, and 35e are provided on the back surface of the slide member 30e. Any of the contacts corresponding to the LEDs 35c, 35d, 35e provided and slid at the center by sliding the slide member 30e is electrically joined to the electrical contact on the receiving guide member 34d side. become. Accordingly, when the lighting switch 34c is turned on, the light emitting unit 35 in which this electrical connection is established is turned on.

  Similarly to the above, the LEDs 35c, 35d, and 35e are an excitation light emitting LED, a white LED, and an infrared light LED, respectively, but are not limited to these except for the excitation light emitting LED 35c. When diagnosing, the operator D slides the slide member 30e to the left and right by manual operation, positions the desired light emitting unit 35 at the center, and turns on the lighting switch 34c, so that the positioned light emitting unit 35 is lit. .

  In the medical irradiation frame device B3 of FIG. 17 (b), a mounting base 34e is fixed at the center of the forehead of the head mounting means 29, and three LEDs 35c, 35d, 35e as the light emitting unit 35 are provided. On a rotating member (mounting base) 30f that is rotatably mounted on the mounting base 34e, it is arranged at equal intervals along a circumference concentric with the center of rotation. A set of electrical contacts (not shown) is provided at a position corresponding to the rotation trajectory of the light emitting unit 35 on the mounting base 34e, and contacts (corresponding to the LEDs 35c, 35d, 35e) on the back surface of the rotating member 30f. (Not shown) is provided, and by rotating the rotating member 30f, any one of the contacts corresponding to the LEDs 35c, 35d, and 35e is electrically joined to the electrical contact on the mounting base 34e side. Accordingly, when the lighting switch 34c is turned on, the light emitting unit 35 in which this electrical connection is established is turned on.

  Accordingly, when performing diagnosis, the operator D manually rotates the rotating member 30f to position the desired light emitting unit 35 at the joining position and turns on the lighting switch 34c. Light. The left and right slides by the slide member 30e and the rotation of the rotation member 30f correspond to the selection means of the irradiation means, and it is also possible to configure such that these are driven by a motor.

  The medical irradiation frame device B4 in FIG. 18 shows an example in which the irradiation means 30 is detachably attached to the head mounting means 29, and FIG. 18 (b) is a diagram showing a detachable mechanism. A mounting base 34f having a concave cross section is fixed at the center of the forehead side of the head mounting means 29, and a set of electrical contacts 34g is provided at the bottom thereof. Moreover, the irradiation means 30 is comprised by the package type which equips the inside with the light emission part 35 similarly to the above, and is attached to the attachment base 30g so that swing is possible. The attachment base 30g is shaped to be fitted and held in the recess of the attachment base 34f. A contact (not shown) that mates with the electrical contact 34g is provided on the rear surface of the mounting base 30g, and when the irradiation means 30 is mounted on the mounting base 34f with the mounting base 30g, both the contacts are electrically joined. Is done. And the lighting switch 34a is provided in the side part of the attachment base 34f, and the light emission part 35 of the irradiation means 30 with which this switch 34a was mounted is lighted.

  FIG. 18B shows that three types of irradiation means 30 are prepared and can be selectively attached to the head mounting means 29 as appropriate. In the illustrated example, the three types of irradiation means 30 include an excitation light emitting LED 35c, a white LED 35d, and an infrared light LED 35e as the light emitting unit 35, respectively. Therefore, the operator D selects the desired irradiation means 30 according to the observation / diagnosis purpose, and inserts and attaches the attachment base 30g to the attachment base 34f from above as shown in the figure, and turns on the lighting switch 34a for observation. Observation and diagnosis of the target site can be performed. In addition, various observations and diagnoses as described above can be performed while appropriately selecting and exchanging these three types of irradiation means 30. Needless to say, the light emitting section 35 can be replaced with or added to another light emitting unit other than the excitation light emitting LED 35c.

  The medical irradiation frame device B5 of FIG. 19 shows an example in which the observation unit 31 is composed of a protective glasses or a translucent glasses lens part of protective goggles or a goggle main body part. As medical tools, special glasses or goggles are used to protect the eyes of the operator from the splash of the treatment liquid or to prevent infection. The medical irradiation frame device B5 of this embodiment also has such a function of protecting the eyes. Here, the eyeglass lens portion or the goggle main body portion is collectively referred to as an orbital protection member 37. FIG. 19A is a diagram showing a mechanism for attaching and detaching the orbital protection member 37, and FIG. 19B is a conceptual diagram of the usage state.

  A mounting base 34h is fixed to the central portion of the forehead of the head mounting means 29, and the mounting base 34h has an irradiation means 30 in which a light emitting section 35 that emits three types of light as in the seventh embodiment is packaged. Is attached so that it can swing freely. Further, on the side of the head mounting means 29, there is provided a lighting switch 34b having three switch portions that can selectively light these three types of light emitting portions 35. The orbital protection member 37 has a mounting base portion 37a and is detachably mounted on the lower side portion of the mounting base 34h as indicated by an arrow. And orbital protection member 37 may consist of a simple translucent member, but may be given a degree according to the visual acuity of the operator. The light transmitting portion of the orbital protection member 37 is a light receiving filter section 33 having the same transmission characteristics as described above.

  Therefore, when the excitation light is irradiated from the irradiation unit 30 and the image of the observation target part is observed through the light receiving filter unit 33, the fluorescence image and the contour image emitted from the lesioned part are clearly visible as described above. Moreover, when irradiating white light and observing the whole tooth, the orbital protection member 37 provided with the function of the light receiving filter unit 33 can be removed and directly observed.

  In the above description, an example in which the orbital protection member 37 itself is made of a member that functions as the light-receiving filter portion 33 has been described. However, the orbital protection member 37 is formed of a simple translucent member, and the front or rear surface is similar. A filter member having wavelength characteristics may be detachably mounted. Further, instead of the detachable mechanism by the mounting base portion 37a, it is possible to employ a mechanism that allows the orbital protection member 37 to be flipped up and retracted.

  The medical irradiation frame device B6 of FIG. 20 shows an example in which the observation unit 31 includes a magnifying glass. The magnifying glass in the example is binoculars 38, but may be a magnifying glass. 20A is a perspective view of the binoculars 8, and FIG. 8B is a diagram showing a mechanism for attaching and detaching the binoculars 38. FIG. The irradiating means 30 is a package of a light emitting section 35 that emits three types of light as in the seventh embodiment, and is attached to the head mounting means 29 in a freely swingable manner via an attachment base 34h. On the side of the head mounting means 29, there is provided a lighting switch 34b having three switch portions as described above.

  The binoculars 38 are detachably mounted on the lower side of the mounting base 34h with the mounting base 38a as shown by arrows. A filter 39 a is detachably attached to the objective lens side of the binoculars 38, and this is used as the light receiving filter unit 39. Similarly to the above, the filter 39a transmits the fluorescence emitted from the lesioned part and the part of the excitation light reflected by the part other than the lesioned part when the observation part is irradiated with the excitation light from the irradiation unit 30. Consists of those with characteristics. Therefore, according to the medical irradiation frame device B6 of the present embodiment, the extracted fluorescent image of the lesioned part can be visually recognized in a state enlarged by the function of the binoculars 38. Can be grasped more accurately.

  The medical irradiation frame device B7 of FIG. 21 is configured in a goggle or glasses shape as a whole, and the observation unit 31 has a translucent goggle main body part or a spectacle lens part (hereinafter referred to as an orbital protection member as described above). This is an example of an imaging unit 40 including a solid-state imaging device 40a such as a CCD or MOS. The head mounting means 29 is composed of a goggle frame or a glasses frame that is hung on the ear of the surgeon. As in the seventh embodiment, the irradiation means 30 in which the light emitting section 35 that emits three types of light is packaged is detachably mounted on the side of the frame 29, and a CCD 40a is built in the center of the upper side of the frame 29. The image pickup means 40 is detachably installed. A filter having a wavelength characteristic similar to that described above is detachably attached to the light receiving portion of the image pickup means 40 to form a light receiving filter portion 41.

  The imaging means 40 further includes a wireless signal transmission unit 40b, and the image data converted into an electrical signal by the CCD 40a is wirelessly transmitted to a personal computer 42 provided separately. In the personal computer 42, the control unit 42a stores the received image data in the storage unit, or appropriately performs image processing and displays it on the display 42b, and further prints it out with a printer (not shown). can do. Further, a switch 40 c serving as a switch for the irradiation unit 30 and a drive switch for the imaging unit 40 is attached to the side of the frame 29. Note that the irradiation drive control of the irradiation means 2 can be performed by the control unit 18a of the personal computer 18. Various image information processing is performed by associating the irradiation drive control with the image data from the imaging means 40. Can also be made. This will be described later. Needless to say, the image pickup means 40 and the personal computer 42 can be connected to each other by wire.

  The orbital protection member 39 protects the surgeon's eyes from the treatment liquid splash or prevents infection, and functions as the observation unit 31, and has a similar wavelength characteristic to the translucent part. Is used as the light receiving filter unit 43 as shown in the figure. The light-receiving filter unit 41 and the light-receiving filter unit 43 attached to the imaging unit 40 are the fluorescence and the lesioned part irradiated from the lesioned part when the irradiation unit 30 irradiates the observation target site with the excitation light. It has a wavelength characteristic that transmits a part of the excitation light reflected from other parts and blocks most of the excitation light, and is visually recognized through the orbital protection member 39 or obtained by the imaging means 40. The obtained image is a high diagnostic value that is visually recognized together with the image of the lesioned part and the blurred outline.

  According to the medical irradiation frame device B7 of the present embodiment, the surgeon irradiates the observation target site with desired light from the irradiation means 30, and observes the optical image from the observation target site through the orbital protection member 39. At the same time, the same image can be converted into an electrical signal by the imaging means 40 and sent to the personal computer 42 to be displayed on the display 42b or the like. Therefore, the patient or assistant can observe the state of the observation target region at the same time as the operator using the displayed image, and communication between the operator, patient or assistant can be facilitated, and diagnosis / treatment with high accuracy can be achieved. Can be implemented. Further, the image information obtained from the imaging means 40 is stored as medical chart information, and can be used effectively for continuous diagnosis and the like. Further, various diagnostic image information can be obtained by appropriately using the light receiving filter unit 43 of the orbital protection member 39 or the light receiving filter unit 41 of the imaging unit 40 and appropriately switching light emission of the light emitting unit 35 in the irradiation unit 30. it can.

  The medical irradiation frame device B8 in FIG. 22 shows an application example with a frame mirror, and the mounting base 34i is fixed to the center portion on the forehead side of the head mounting means 29 made of an open annular elastic fixing band. The irradiating means 30 and the mirror 44 bent in a bowl shape are integrally attached to the mounting base 34i so as to freely swing. The irradiation means 30 is supported by the support arm 45 so that the irradiation light is directed to the mirror surface of the mirror 44, and the irradiation light reflected by the mirror surface of the mirror 44 is condensed at a predetermined focal point and is applied to the observation target region. It is designed to be irradiated. A viewing hole 46 is formed at the bottom of the concave curved surface of the mirror 44, and the viewing hole 46 serves as an observation unit 31. The surgeon positions his / her own eye behind the peephole 46 and observes the state of the site to be observed through the peephole 46. A filter member having a wavelength characteristic similar to that described above is attached to the viewing hole 46, and this is used as a light receiving filter portion 47.

  On the side of the head mounting means 29, there is provided a lighting switch 34j for lighting the light emitting part 35 that emits the excitation light of the irradiation means 30. The surgeon wears the head mounting means 29 on his / her head, turns on the lighting switch 34j, swings the irradiation means 30 and the mirror 44, and adjusts the irradiation field to face the observation target region. . Then, the state of the observation target portion irradiated with the excitation light is observed through the viewing hole 46. At this time, since the light receiving filter portion 47 is provided in the peep hole 46, most of the excitation light directed directly from the irradiation means 30 to the peep hole 46 is blocked by the light receiving filter portion 47, and the lesioned portion of the observation target site The characteristic fluorescence emitted from the light is extracted and can be clearly observed. In addition, since a part of the excitation light reflected from the observation target part is transmitted, the outline image of the observation target part is visually blurred by this reflected light.

  The irradiation means 30 has a function of irradiating white light other than excitation light, infrared light or ultraviolet light, and has a wavelength characteristic corresponding to the type of irradiation light by removing the light receiving filter portion 47. It goes without saying that the above-described various observation diagnoses can be performed by attaching the light receiving filter portion 47 as appropriate. Moreover, it is also possible to add the imaging means 40 of Example 12 to the medical irradiation frame device B8 of the present example so as to have the same function.

  The medical irradiation frame device B9 of FIG. 23 shows an application example of a face cover used for laser therapy or the like, and the front surface (forehead side) of a face cover frame (visor frame) as the head mounting means 29. A face cover body 48 made of a translucent resin that substantially covers the face of the operator D is detachably attached. The face cover main body 48 is used as the observation unit 31, and the light receiving filter unit 49 having the above-described wavelength characteristics is formed by coating the surface of the face cover main body 48. Needless to say, the face cover body 48 itself simply transmits light, and a filter member having the same wavelength characteristic can be attached to and removed from the front or back surface, and this can be used as a light receiving filter section. Yes.

  Further, a mounting base 34h is fixed to the central part of the forehead of the head mounting means 29, and the mounting base 34h is an irradiating means in which a light emitting part 35 that emits three types of light is packaged as in the seventh embodiment. 30 is mounted so as to be swingable and detachable. On the side of the head mounting means 29, there is provided a lighting switch 34b having three switch portions that can selectively light the three types of light emitting portions 35. Needless to say, an irradiation filter or a condenser lens can be attached to the front side of the irradiation means 30 as necessary, as described above.

  FIG. 24 shows the living body observation apparatus of the present invention embodied in a dental mirror. The dental mirror C of the illustrated example is supported by a finger and can be inserted into the oral cavity 50, an irradiation means 51, and a tip. And the mirror part 52 on the side. The irradiation means 51 is provided in the middle of a support arm 53 for supporting the mirror portion 52 at a predetermined angle on the front side of the main body 50, and includes a light emitting portion such as an LED that emits excitation light having the same wavelength characteristics as described above. Is done. Then, using a battery (not shown) built in the main body 50 as a power source, the light is turned on by operating a lighting switch 54 provided on the body of the main body 50. The light emitted from the irradiation means 51 is directed to the tooth t as indicated by an arrow, and the light emitted from the tooth t is directed to the mirror unit 52. The mirror unit 52 is an observation unit 55, and the surgeon observes an image reflected by the mirror unit 52 and makes a diagnosis.

  The mirror part 52 is coated with a coating agent that transmits a part of the fluorescence generated from the observation target site (tooth t) and the reflected excitation light on the surface thereof, or a translucent resin having similar transmission characteristics. By adhering the film, the light receiving filter portion 56 is formed. The dental mirror C of the present embodiment is for diagnosing and observing the state of the tooth t reflected in the mirror portion 52 by inserting the tip side into the oral cavity in the same manner as a conventionally known dental mirror.

  Thus, in the dental mirror C of this embodiment, the lighting switch 54 is turned on at the time of the observation / diagnosis, and the irradiation light 51 irradiates the tooth t of the site to be observed with the excitation light. If there is a lesion such as caries on the tooth t, its specific fluorescence is emitted. Further, the irradiated excitation light is reflected at a site other than the lesioned part. These lights are directed to the mirror unit 52. Since the light receiving filter unit 56 having the above transmission characteristics is formed in the mirror unit 52, the fluorescence is transmitted through the light receiving filter unit 56 and reflected by the mirror unit 52. Is done. Further, most of the excitation light reflected from the observation target part is blocked (absorbed) by the light receiving filter unit 56, and part of the excitation light is transmitted and reflected by the mirror unit 52. Therefore, the fluorescent image reflected from the mirror unit 52 is a clear image, and the contour image of the tooth t by excitation light that is partially transmitted and reflected is also visually recognized. The degree is accurately grasped and is extremely useful for diagnostic treatment.

  It is also possible to configure a diagnostic device by appropriately combining the configurations of the above embodiments. Further, the irradiation means may be turned on / off by a foot pedal switch. The diagnostic device of the present invention is effective for dentistry, but is not limited to this, and can be widely used for medical purposes such as otolaryngology, internal medicine, and dermatology. In addition, the irradiation means can be used in a dental handpiece such as a dental air turbine handpiece or a dental scaler handpiece, built in or externally mounted on a photopolymerization irradiator, and further used in a dental handpiece or the like. It is also possible to treat the affected area while visually recognizing the tissue around the affected area with an image obtained by incorporating or externally mounting the irradiation means and the imaging means. Moreover, when the said dental handpiece etc. are equipped with the said irradiation means, it is desirable to light-guide using a conventionally well-known light guide. In this way, treatment and observation can be performed with a single device. In addition, these devices can be widely used in ordinary households. This can serve as a reference for caries prevention and skin care.

It is a top view which shows an example of the intraoral imaging device of this invention. It is a longitudinal cross-sectional view along the longitudinal direction of the intraoral imaging device. It is an enlarged bottom view of the main body front side part. FIG. 4 is a longitudinal sectional view taken along line XX in FIG. 3. It is a partial longitudinal section notched front view of the same side part. It is an effect | action figure which shows the intra-oral diagnosis condition by an intraoral imaging device. It is a figure which shows an example of the picked-up image of the tooth | gear in an intraoral area. It is a figure which shows the contrast graph of the radiation intensity of the carious tooth and healthy tooth by irradiation of excitation light. It is a figure which shows the relative fluorescence intensity graph of the carious tooth and healthy tooth by excitation light irradiation. It is a graph which shows the relationship between the wavelength distribution of excitation light, and the transmission characteristic of the filter part for light reception. It is a partial longitudinal section notch front view of 2nd Example of an intraoral imaging device. It is a partial vertical section notch front view of the 3rd Example of an intraoral imaging device. It is a partial vertical section partial notch front view of the 4th Example of an intraoral imaging device. It is a partial vertical section notch front view of the 5th Example of an intraoral imaging device. It is a figure which shows 1st Example of the irradiation frame apparatus for diagnosis, (a) is the conceptual diagram of the use condition, (b) is an expanded sectional view of an irradiation means, (c) is the same figure of the modification. is there. It is a figure which shows 2nd Example of the irradiation frame apparatus for diagnosis, (a) is the conceptual diagram of the use condition, (b) shows the partial notch expansion perspective view of an irradiation means. It is a figure which shows the 3rd Example of the irradiation frame apparatus for diagnosis, (a) is an example which displaced the some light emission part by a slide, and was made to selectively irradiate, (b) is the same rotation This is an example of selectively irradiating with displacement. It is a figure which shows 4th Example of the irradiation frame device for diagnosis, (a) is a conceptual diagram of the use condition, (b) is a figure which shows the attachment / detachment mechanism. It is a figure which shows 5th Example of the irradiation frame device for a diagnosis, (a) is a figure which shows the attachment / detachment mechanism of an orbital protection member, (b) is a conceptual diagram of the use condition. It is a figure which shows 6th Example of the irradiation frame device for diagnosis, (a) is a perspective view of binoculars, (b) is a figure which shows the attachment / detachment mechanism of binoculars. It is a figure which shows 7th Example of the irradiation frame apparatus for a diagnosis. It is a figure which shows 8th Example of the irradiation frame apparatus for a diagnosis. It is a figure which shows 9th Example of the irradiation frame apparatus for a diagnosis. It is a figure which shows the Example of a dental mirror.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2, 30, 51 Irradiation means 3, 31, 55 Observation part 4 Imaging means 4a Solid-state image sensor 5, 33, 43, 47, 49, 56 Light reception filter part 6 Irradiation filter 18a Irradiation drive means 29 Head mounting Means 50 Main body 52 Mirror part A, A1-A4 Intraoral imaging device B, B1-B9 Medical irradiation frame device C Dental mirror D Operator

Claims (10)

  An irradiating means for irradiating excitation light that radiates fluorescence from a lesioned part of the observation target part, and an observation part for observing a radiation image from the observation target part, the observation part having a central wavelength of the excitation light A light receiving filter that transmits light in a visible light band from a wavelength range shifted by 20 to 50 nm is provided closer to the center of visible light. In the observation part, fluorescence generated from an observation target site and reflected excitation light A living body observation device characterized in that a radiation image can be observed by a unit. The biological observation apparatus according to claim 1,
The living body observation apparatus, wherein the excitation light irradiated from the irradiation means has a center wavelength of 365 nm, and the light receiving filter section transmits light having a wavelength of 385 to 415 nm or more. The biological observation apparatus according to claim 1,
The living body observation apparatus characterized in that the central wavelength of the excitation light emitted from the irradiation means is 405 nm, and the light receiving filter section transmits light having a wavelength of 425 to 475 nm or more. The biological observation apparatus according to claim 1,
The living body observation apparatus, wherein the excitation light emitted from the irradiation means has a center wavelength of 470 nm, and the light receiving filter section transmits light having a wavelength of 490 to 540 nm or more. The living body observation apparatus according to any one of claims 1 to 4,
The living body observation apparatus characterized in that the irradiation means comprises any of an LED, a laser diode, a semiconductor laser, a solid-state laser oscillator, and a laser oscillator. The living body observation apparatus according to any one of claims 1 to 4, wherein the irradiation means includes a light source comprising any one of a halogen lamp, a metal halide lamp, a xenon lamp, a krypton lamp, a mercury lamp, or a sodium lamp, an irradiation optical filter, A living body observation apparatus that irradiates only the excitation light component with an irradiation optical filter among the light emitted from the light source.   A main body that can be supported by fingers, an irradiating means according to any one of claims 1 to 6, and an imaging means as an observing section equipped on the main body, the imaging means comprising: a solid-state imaging device; The light receiving filter unit according to any one of 1 to 4 is generated from the observation target part when the observation target part is irradiated with the excitation light from the irradiation unit. An intraoral imaging apparatus characterized by transmitting part of fluorescence and reflected excitation light. In the intraoral photographing apparatus according to claim 7,
Intraoral imaging, wherein the irradiation unit further includes a function of irradiating light of a plurality of different wavelengths, and further includes a switching unit that enables selection of the type of irradiation light irradiated from the irradiation unit. apparatus.   A head mounting means for mounting on the surgeon's head, an irradiation means according to any one of claims 1 to 6 attached to the head mounting means, and an observation object provided on the head mounting means An observation unit for observing a radiation image from a part, and the observation unit includes the light receiving filter unit according to any one of claims 1 to 4, wherein the light receiving filter unit is provided by the irradiation unit. When the excitation light is irradiated onto the observation target site, the medical irradiation frame device is configured to transmit a part of the fluorescence generated from the observation target site and the reflected excitation light.   A main body supported by fingers and insertable into the oral cavity, an irradiation means according to any one of claims 1 to 6 attached to the main body, and a mirror portion mounted on a front side portion of the main body. The mirror portion is an observation portion that reflects and observes a radiation image from a portion to be observed, and the light receiving filter portion according to any one of claims 1 to 4 is formed on a surface thereof. The filter unit transmits a part of the fluorescence generated from the observation target part and the reflected excitation light when the observation target part is irradiated with the excitation light from the irradiation unit. mirror.

Images