WO2022137920A1 - Dispositif d'exposition aux uv, équipement médical et procédé de commande de dispositif d'exposition aux uv - Google Patents

Dispositif d'exposition aux uv, équipement médical et procédé de commande de dispositif d'exposition aux uv Download PDF

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Publication number
WO2022137920A1
WO2022137920A1 PCT/JP2021/042480 JP2021042480W WO2022137920A1 WO 2022137920 A1 WO2022137920 A1 WO 2022137920A1 JP 2021042480 W JP2021042480 W JP 2021042480W WO 2022137920 A1 WO2022137920 A1 WO 2022137920A1
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Prior art keywords
ultraviolet
irradiation
source
light amount
irradiation device
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PCT/JP2021/042480
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English (en)
Japanese (ja)
Inventor
知成 千代
豪人 別当屋敷
丈恭 小林
慎介 野口
健治 ▲高▼田
直行 西納
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富士フイルム株式会社
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Priority to JP2022571974A priority Critical patent/JPWO2022137920A1/ja
Publication of WO2022137920A1 publication Critical patent/WO2022137920A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/08—Radiation
    • A61L2/10—Ultraviolet radiation

Definitions

  • the technique of the present disclosure relates to an ultraviolet irradiation device, a medical device, and a control method of the ultraviolet irradiation device.
  • a mounting portion for mounting an X-ray detector is provided on a mobile X-ray imaging apparatus, and an ultraviolet irradiation unit is provided inside the mounting portion to provide an X-ray detector. It has been proposed to sterilize.
  • the objects of sterilization in medical equipment are wide-ranging, such as X-ray detectors, operation units, touch panels, and monitors, which the surgeon or patient often comes into contact with. These are installed in different places. Therefore, for example, when the position of the ultraviolet source is fixed, even if the ultraviolet source irradiates the object with ultraviolet rays, the amount of irradiation light changes due to the change in the distance from the ultraviolet source to the object. Can be considered. When the distance from the ultraviolet source to the object is longer than expected, the amount of irradiation light is reduced, so that a sufficient bactericidal effect cannot be obtained.
  • An object of the present disclosure is to provide an ultraviolet irradiation device, a medical device, and a control method for an ultraviolet irradiation device, which is necessary for sterilization of an object and can give an appropriate irradiation light amount. ..
  • the ultraviolet irradiation device of the present disclosure includes an ultraviolet source that emits ultraviolet rays toward an object, a measurement sensor that measures a physical quantity related to the illuminance of the ultraviolet rays that are applied to the object, and an object.
  • a processor that controls at least one of the irradiation time or the irradiation intensity of ultraviolet rays by an ultraviolet source based on a measured value of a physical quantity is provided.
  • the measurement sensor is preferably a distance sensor that measures the distance from the ultraviolet source to the object as a physical quantity.
  • the measurement sensor is preferably a light quantity sensor that measures the amount of reflected ultraviolet light from an object as a physical quantity.
  • the processor sets the irradiation intensity or the irradiation time as a set value and determines the irradiation time or the irradiation intensity for obtaining the target irradiation light amount based on the measured value.
  • the target irradiation light amount is preferably changed according to the type of microorganism to be sterilized.
  • the notification unit for notifying the operator of information, and the notification unit preferably notifies the operator of the information when the irradiation light amount of ultraviolet rays reaches the target irradiation light amount.
  • the ultraviolet source preferably stops the emission of ultraviolet rays when the irradiation light amount of ultraviolet rays reaches the target irradiation light amount.
  • the wavelength of ultraviolet rays is preferably 230 nm or less.
  • the medical device of the present disclosure is provided with any of the above ultraviolet irradiation devices.
  • the control method of the ultraviolet irradiation device of the present disclosure is to control an ultraviolet irradiation device including an ultraviolet source that emits ultraviolet rays toward an object and a measurement sensor that measures a physical quantity related to the illuminance of the ultraviolet rays emitted to the object.
  • an ultraviolet irradiation device including an ultraviolet source that emits ultraviolet rays toward an object and a measurement sensor that measures a physical quantity related to the illuminance of the ultraviolet rays emitted to the object.
  • at least one of the irradiation time or the irradiation intensity of ultraviolet rays by an ultraviolet source is controlled based on the measured value of the physical quantity.
  • an ultraviolet irradiation device a medical device, and a control method of an ultraviolet irradiation device, which is necessary for sterilization of an object and can give an appropriate irradiation light amount. ..
  • FIG. 1 shows an example of the appearance of the ultraviolet irradiation device 2.
  • the ultraviolet irradiation device 2 is a small and lightweight handy type ultraviolet irradiation device.
  • the ultraviolet irradiation device 2 has a case 3 composed of a main body portion 3A and a grip portion 3B.
  • the main body 3A has a built-in ultraviolet source 4 that emits ultraviolet UV radially.
  • the main body 3A is an ultraviolet irradiation unit that irradiates an object with ultraviolet UV rays from the ultraviolet source 4.
  • the optical axis direction of the ultraviolet UV emitted from the ultraviolet source 4 is referred to as the Z direction. Further, one direction orthogonal to the Z direction is called the X direction. Further, the direction orthogonal to the Z direction and the X direction is referred to as the Y direction.
  • the grip portion 3B is a portion that is gripped by the user as an operator.
  • the grip portion 3B is provided with an irradiation start button 5 for initiating irradiation of ultraviolet UV rays on the ultraviolet source 4.
  • the user can operate the irradiation start button 5 with, for example, the index finger while holding the grip portion 3B by hand.
  • ultraviolet UV rays are irradiated from the front surface side of the main body 3A toward the object.
  • An operation display unit 6 is provided on the rear surface side of the main body unit 3A.
  • the operation display unit 6 is, for example, a display with a touch panel in which a touch panel such as a capacitance type is attached to a display such as an organic EL (ElectroLuminescence) or a liquid crystal display. The user can perform various setting operations on the operation display unit 6.
  • UV irradiation region R at the position of the object changes according to the distance L from the ultraviolet source 4 to the object. Specifically, the area of the irradiation region R changes in proportion to the square of the distance L from the ultraviolet source 4 to the object.
  • the irradiation region R is substantially circular in the virtual XY plane.
  • the area of the irradiation region R is an area in the XY plane at a point separated by a distance L in the Z direction from the ultraviolet source 4.
  • the ultraviolet irradiation device 2 has a visible light conversion unit 7 (see FIG. 2) that converts a part of the ultraviolet UV emitted from the ultraviolet source 4 into visible light VL.
  • the visible light conversion unit 7 and the ultraviolet source 4 constitute a visible light source 9 (see FIG. 2). That is, the ultraviolet source 4 is also used as a part of the visible light source 9.
  • the visible light conversion unit 7 is provided on the outer peripheral portion of the ultraviolet UV emitting area, and converts the outer peripheral portion of the light flux of the ultraviolet UV into visible light VL. That is, the object is irradiated with visible light VL along the outer periphery of the irradiation region R of the ultraviolet UV during the irradiation of the ultraviolet UV.
  • the visible light VL refers to a light beam having a short wavelength limit of 360 nm to 400 nm and a long wavelength limit of 760 nm to 830 nm, as specified in Z8120 of the JIS (Japanese Industrial Standards) standard, for example.
  • the object to which the ultraviolet UV is irradiated by the ultraviolet irradiation device 2 is, for example, an X-ray flat panel detector 8 used for medical diagnosis.
  • the X-ray flat panel detector 8 is referred to as an FPD (Flat Panel Detector) 8.
  • the FPD 8 is an X-ray detector that detects X-rays emitted from an X-ray source (not shown) and generates an X-ray image.
  • the FPD8 is a small and portable X-ray detector that can be carried and used not only in hospitals but also at sites that require emergency medical care such as accidents and disasters, or at the homes of patients receiving home medical care. It is possible.
  • FPD8 Since FPD8 is used repeatedly, there are many opportunities to come into contact with the operator or patient, and microorganisms such as bacteria or viruses easily adhere to it. Therefore, there is a risk that the infection will spread between the operator or the patient via FPD8 to which bacteria or viruses are attached.
  • As an infection prevention measure it is effective to sterilize the FPD8 by irradiating it with ultraviolet UV rays on a regular basis.
  • sterilization means inactivating microorganisms such as bacteria or viruses.
  • FIG. 2 shows an example of the internal configuration of the ultraviolet irradiation device 2.
  • the ultraviolet irradiation device 2 includes an ultraviolet source 4, an operation display unit 6, a CPU (Central Processing Unit) 10, a RAM (RandomAccessMemory) 11, and a non-volatile memory (NVM: Non-VolatileMemory) 12. , A distance sensor 13, and a battery 14.
  • the RAM 11 is a work memory for the CPU 10 to execute a process.
  • the NVM 12 is a storage device such as a flash memory, and stores the program 15 and the target irradiation light amount M.
  • the battery 14 supplies electric power to each part of the ultraviolet irradiation device 2.
  • the battery 14 is, for example, a secondary battery that can be charged by an external power source. In this case, it is preferable that the battery 14 is configured to be capable of wireless charging (so-called wireless charging), not limited to wired charging.
  • the CPU 10 collectively controls each part of the ultraviolet irradiation device 2 by loading the program 15 stored in the NVM 12 into the RAM 11 and executing the process according to the program 15.
  • the CPU 10 is an example of a "processor" according to the technique of the present disclosure.
  • the irradiation start button 5 described above is connected to the CPU 10.
  • the CPU 10 causes the ultraviolet source 4 to start the ultraviolet UV emission operation based on the irradiation start signal input from the irradiation start button 5 in response to the user pressing the irradiation start button 5.
  • the CPU 10 stops the ultraviolet UV emission operation by the ultraviolet source 4 when it is determined that the ultraviolet UV irradiation light amount in the object has reached the target irradiation light amount M based on the target irradiation light amount M stored in the NVM 12.
  • the CPU 10 since the visible light VL is emitted from the visible light conversion unit 7 that is sensitive to the ultraviolet UV, the CPU 10 also stops the irradiation of the visible light VL by the visible light source 9 as the irradiation of the ultraviolet UV is stopped. It will be.
  • the target irradiation light amount M is a necessary and appropriate irradiation light amount for inactivating the microorganism to be sterilized.
  • the ultraviolet source 4 emits ultraviolet UV having a center wavelength of 230 nm or less, for example.
  • Ultraviolet UV having a central wavelength of 230 nm or less is deep ultraviolet that is effective for inactivating microorganisms such as bacteria and viruses.
  • the ultraviolet UV is particularly preferably deep ultraviolet having a center wavelength of 222 nm. Deep ultraviolet rays with a central wavelength of 222 nm have little effect on the human body. This is known, for example, in Japanese Patent No. 6306097. Alternatively, this may also be ultraviolet UV having a central wavelength of 207 nm, which is known to have a small effect on the human body.
  • the ultraviolet source 4 for example, an LED (Light Emitting Diode) is used.
  • the ultraviolet source 4 emits radial ultraviolet UV with the optical axis A as the central axis.
  • the ultraviolet UV emitted from the ultraviolet source 4 is emitted to the outside through a translucent plate 17 provided on the front surface side of the main body 3A.
  • the translucent plate 17 is made of, for example, a transparent resin and has a property of transmitting ultraviolet rays and UV rays.
  • the translucent plate 17 is provided with the above-mentioned visible light conversion unit 7.
  • the visible light conversion unit 7 is formed, for example, by applying a fluorescent paint containing a phosphor that converts ultraviolet UV to visible light VL along the outer periphery of a circular translucent plate 17.
  • the visible light conversion unit 7 may be formed by a wavelength conversion filter that converts ultraviolet UV into visible light VL.
  • a part of the ultraviolet UV emitted from the ultraviolet source 4 is incident on the visible light conversion unit 7.
  • the visible light conversion unit 7 converts the incident ultraviolet UV into visible light VL and emits it.
  • the outer circumference of the ultraviolet UV irradiation region R (see FIG. 1) is indicated by the visible light VL.
  • an ultraviolet source for irradiating the visible light conversion unit 7 with ultraviolet UV may be provided.
  • the distance sensor 13 is, for example, an optical distance measuring sensor.
  • the distance sensor 13 measures the distance L from the ultraviolet source 4 to the object by emitting the pulse-modulated laser light 18A toward the object and receiving the reflected light 18B reflected by the object.
  • the distance sensor 13 may be a so-called TOF (Time of Flight) sensor.
  • the distance sensor 13 is an example of a “measurement sensor that measures a physical quantity related to illuminance” according to the technique of the present disclosure.
  • the distance sensor 13 measures the measured value of the distance L, which is obtained by adding the distance L2 (design value) from the distance sensor 13 to the ultraviolet source 4 to the distance L1 from the distance sensor 13 to the object. Output to. That is, the distance sensor 13 outputs the measured value of the distance L from the ultraviolet source 4 to the object to the CPU 10.
  • the distance sensor 13 may output the measured value of the distance L1 from the distance sensor 13 to the object to the CPU 10.
  • the CPU 10 may obtain the distance L from the ultraviolet source 4 to the object by adding the distance L2 (design value) from the distance sensor 13 to the ultraviolet source 4 to the measured value of the distance L1.
  • the CPU 10 irradiates the object with the ultraviolet UV by the ultraviolet source 4 so that the irradiation light amount (integrated light amount per unit area) of the ultraviolet UV matches the target irradiation light amount M. At least one of the time T and the irradiation intensity K is controlled.
  • the irradiation intensity K is a physical quantity representing the radiant energy (unit: mJ / sec) radiated from the ultraviolet source 4 in a certain direction per unit time.
  • the CPU 10 can control the irradiation intensity K by adjusting the drive current or the drive voltage supplied to the ultraviolet source 4.
  • the CPU 10 adjusts the pulse width of the drive current or the drive voltage supplied to the ultraviolet source 4 to change the effective voltage or the effective current.
  • the irradiation intensity K can be controlled.
  • the irradiation light amount (unit: mJ / cm 2 ) is expressed by the product of the illuminance (unit: mW / cm 2 ) and the irradiation time T (unit: sec).
  • Illuminance is the amount of luminous flux incident on a unit area of an object.
  • the illuminance is proportional to the irradiation intensity K and inversely proportional to the square of the distance L from the ultraviolet source 4 to the object.
  • the CPU 10 controls the operation display unit 6.
  • the CPU 10 displays various information on the operation display unit 6 and receives an operation signal from the operation display unit 6.
  • the user can set the irradiation time T or the irradiation intensity K to a fixed value by operating the operation display unit 6. For example, when the user wants to keep the irradiation time of ultraviolet UV constant regardless of the distance L, he / she operates the operation display unit 6 to set the irradiation time T to a fixed value. On the other hand, when the user desires to keep the irradiation intensity K constant regardless of the distance L, the user operates the operation display unit 6 to set the irradiation intensity K to a fixed value.
  • the CPU 10 determines whether to control the irradiation time T or the irradiation intensity K based on the operation signal received from the operation display unit 6.
  • FIG. 4 shows an example of the function realized by the CPU 10.
  • the CPU 10 executes a process based on the program 15 to perform an irradiation control unit 20, a display control unit 21, an operation signal acquisition unit 22, an irradiation condition determination unit 23, and an elapsed time measurement unit 24. Functions as.
  • the irradiation control unit 20 controls the irradiation of ultraviolet UV rays by the ultraviolet source 4 based on the irradiation conditions determined by the irradiation condition determination unit 23.
  • the irradiation conditions include the above-mentioned irradiation time T and irradiation intensity K.
  • the irradiation control unit 20 causes the ultraviolet source 4 to start irradiation of ultraviolet UV and the visible light source 9 to start irradiation of visible light VL based on the irradiation start signal input from the irradiation start button 5.
  • the elapsed time measuring unit 24 measures the elapsed time since the irradiation of ultraviolet UV by the ultraviolet source 4 is started.
  • the irradiation control unit 20 sends ultraviolet rays to the ultraviolet source 4. UV irradiation is stopped, and the visible light source 9 is stopped from irradiation with visible light VL.
  • the irradiation control unit 20 controls the display control unit 21 prior to the start of irradiation of ultraviolet UV rays, so that the setting screen 30 shown in FIG. 5 is displayed on the operation display unit 6 as an example.
  • the operation display unit 6 has selected a first selection button 31 for selecting the “time fixed mode” and a second selection button 32 for selecting the “strength fixed mode”.
  • a decision button 33 for determining the irradiation mode is displayed.
  • the fixed time mode is an irradiation mode in which the irradiation time T is set as a fixed value and the irradiation intensity K is changed according to the measured value of the distance L.
  • the intensity fixed mode is an irradiation mode in which the irradiation intensity K is set as a fixed value and the irradiation time T is changed according to the measured value of the distance L.
  • the user can determine the irradiation mode by touching the first selection button 31 or the second selection button 32 and then the decision button 33 on the setting screen 30 displayed on the operation display unit 6.
  • the operation signal acquisition unit 22 acquires an operation signal from the operation display unit 6.
  • the operation signal acquired by the operation signal acquisition unit 22 includes irradiation mode setting information.
  • the irradiation condition determination unit 23 measures the irradiation mode setting information included in the operation signal acquired by the operation signal acquisition unit 22, the target irradiation light amount M stored in the NVM 12, and the distance L measured by the distance sensor 13. Irradiation conditions (irradiation time T and irradiation intensity K) are determined based on the values.
  • the irradiation condition determination unit 23 sets the irradiation intensity K or the irradiation time T as a fixed value based on the setting information of the irradiation mode, and irradiates to obtain the target irradiation light amount M based on the measured value of the distance L.
  • the time T or the irradiation intensity K is determined.
  • the irradiation conditions determined by the irradiation condition determination unit 23 are input to the irradiation control unit 20.
  • FIG. 6 is a diagram illustrating a method of determining irradiation conditions in the fixed time mode and the fixed intensity mode.
  • the irradiation light amount for obtaining the target irradiation light amount M is proportional to the irradiation intensity K and the irradiation time T, and is inversely proportional to the square of the distance L.
  • the irradiation condition determination unit 23 determines the irradiation intensity K at which the target irradiation light amount M can be obtained by setting the irradiation time T as a fixed value and changing the irradiation intensity K.
  • the irradiation condition determining unit 23 determines the irradiation time T at which the target irradiation light amount M can be obtained by setting the irradiation intensity K as a fixed value and changing the irradiation time T.
  • the fixed value of the irradiation time T in the fixed time mode and the fixed value of the irradiation intensity K in the fixed intensity mode are values stored in advance in the NVM 12. This fixed value may be changed by a setting operation using the operation display unit 6. Further, the target irradiation light amount M stored in the NVM 12 may be changed by the setting operation using the operation display unit 6.
  • the fixed value corresponds to the "set value" according to the technique of the present disclosure. As described above, the set value may be a predetermined value or may be changed by a setting operation.
  • FIG. 7 shows an example of the processing flow by the CPU 10 of the ultraviolet irradiation device 2.
  • the user selects the irradiation mode prior to irradiating the object to be sterilized with ultraviolet rays (step S10).
  • the irradiation mode is selected, for example, by using the setting screen 30 shown in FIG. If the user does not select the irradiation mode, the CPU 10 performs the following processing based on the irradiation mode (time fixed mode or intensity fixed mode) set as the default.
  • the irradiation control unit 20 determines whether or not the irradiation start button 5 is pressed by the user (step S11). When the irradiation control unit 20 determines that the irradiation start button 5 is pressed (step S11: YES), the irradiation control unit 20 causes the distance sensor 13 to measure the distance L to the object (step S12). Next, the irradiation condition determination unit 23 acquires the measured value of the distance L and the target irradiation light amount M, and determines the irradiation condition according to the irradiation mode selected in step S10 (step S13).
  • the irradiation control unit 20 causes the ultraviolet source 4 to start irradiation with ultraviolet UV rays based on the irradiation conditions determined by the irradiation condition determination unit 23 (step S14). Further, the visible light source 9 is started to irradiate the visible light VL. At this time, the elapsed time measuring unit 24 starts measuring the elapsed time after the irradiation of the ultraviolet UV is started. The irradiation control unit 20 determines whether or not the elapsed time measured by the elapsed time measuring unit 24 has reached the irradiation time T included in the irradiation conditions (step S15).
  • step S15 When the irradiation control unit 20 determines that the elapsed time has reached the irradiation time T (step S15: YES), the irradiation control unit 20 stops the irradiation of the ultraviolet UV source 4 with the ultraviolet UV, and irradiates the visible light source 9 with the visible light VL. Stop (step S16).
  • the ultraviolet irradiation device 2 controls at least one of the irradiation time T and the irradiation intensity K based on the measured value of the distance L from the ultraviolet source 4 to the object. It is possible to give an appropriate amount of irradiation light to an object, which is necessary for sterilization. Further, since the ultraviolet irradiation device 2 gives the object an appropriate amount of irradiation light necessary for sterilization, it is possible to prevent deterioration of the object due to excessive ultraviolet irradiation.
  • the ultraviolet irradiation device 2 according to the above embodiment can be modified in various ways. Hereinafter, various modifications of the above embodiment will be described. In the following, only the differences from the above embodiment will be described.
  • the distance sensor 13 (see FIG. 2) is used as a measurement sensor for measuring the distance L to the object as a physical quantity related to the illuminance.
  • a light quantity sensor that measures the reflected light quantity of ultraviolet UV from an object is used as a physical quantity related to illuminance.
  • FIG. 8 shows the internal configuration of the ultraviolet irradiation device 2 according to the first modification.
  • the ultraviolet irradiation device 2 has a light amount sensor 40 instead of the distance sensor 13.
  • the light amount sensor 40 has a photodiode that is emitted from the ultraviolet source 4 and receives a part of the ultraviolet UV reflected by the object.
  • the light amount sensor 40 outputs a signal corresponding to the received amount of ultraviolet rays UV (integrated light amount per unit time) to the CPU 10.
  • the amount of ultraviolet UV received by the light amount sensor 40 changes according to the illuminance of the ultraviolet UV irradiating the object. That is, the amount of ultraviolet UV received by the light amount sensor 40 changes according to the distance L from the ultraviolet source 4 to the object.
  • the irradiation condition determination unit 23 estimates the distance L based on the signal input from the light amount sensor 40, and the irradiation condition (irradiation time T) for obtaining the target irradiation light amount M based on the estimated distance L.
  • the irradiation intensity K may be determined.
  • step S12 of the flowchart shown in FIG. 7 the distance L is determined by pre-irradiating the object with ultraviolet UV from the ultraviolet source 4 and measuring the reflected light amount of the ultraviolet UV with the light amount sensor 40.
  • step S13 the irradiation condition is determined using the distance L estimated in step S12.
  • the irradiation condition determination unit 23 directly determines the irradiation condition based on the signal input from the light amount sensor 40 without estimating the distance L. May be good.
  • a plurality of light amount sensors 40 may be provided on the front side of the main body 3A, and the irradiation conditions may be determined based on the reflected light amount of the ultraviolet UV measured by the plurality of light amount sensors 40.
  • the irradiation condition determination unit 23 determines the irradiation condition based on the average value or the minimum value of the reflected light amount measured by the plurality of light amount sensors 40.
  • the light amount sensor 40 is cheaper than the distance sensor 13. By using the light amount sensor 40 as the measurement sensor, the manufacturing cost of the ultraviolet irradiation device 2 can be reduced.
  • the irradiation control unit 20 causes the operation display unit 6 to display information via the display control unit 21. That is, the operation display unit 6 is an example of the "notification unit" according to the technique of the present disclosure.
  • the notification unit may be a display.
  • FIG. 9 shows an example of a notification screen displayed on the operation display unit 6.
  • the irradiation control unit 20 causes the operation display unit 6 to display the notification screen 50 shown in FIG. 9 as an example.
  • the message 51 "ultraviolet irradiation has reached the target irradiation light amount" and the end button 52 are displayed.
  • the user can recognize that the irradiation light amount has reached the target irradiation light amount M by the message 51 displayed on the notification screen 50. Further, the user can end the display of the notification screen 50 by touching the end button 52.
  • the fact that the irradiation light amount has reached the target irradiation light amount M may be notified by light, sound, vibration, or the like instead of displaying a message on the operation display unit 6.
  • the notification unit may be an indicator such as an LED lamp controlled by a switch or the like.
  • the irradiation condition determination unit 23 determines the irradiation condition based on the target irradiation light amount M stored in advance in the NVM 12.
  • This target irradiation light amount M is a value determined for a specific microorganism such as a new type coronavirus as a sterilization target.
  • the irradiation condition determination unit 23 changes the target irradiation light amount M according to the type of the microorganism to be sterilized selected by the user.
  • a correspondence table 60 in which the type of microorganism to be sterilized and the target irradiation light amount M are associated is stored in the NVM 12.
  • the energy required to inactivate a microorganism depends on the type of microorganism.
  • the target irradiation light amount M shown in FIG. 10 corresponds to the energy required for inactivating the microorganism to be sterilized.
  • the target irradiation light amount M shown in FIG. 10 is a value corresponding to ultraviolet UV having a center wavelength of 222 nm.
  • the target irradiation light amount M depends on the wavelength of ultraviolet UV.
  • the irradiation control unit 20 controls the display control unit 21 prior to the start of irradiation with ultraviolet rays, so that the selection screen 61 shown in FIG. 11 is displayed on the operation display unit 6 as an example.
  • a selection box 62 for selecting the type of microorganism to be sterilized and a decision button 63 are displayed. The user can determine the type of microorganism to be sterilized by touching the name of one microorganism from the selection box 62 and touching the determination button 63.
  • the irradiation condition determination unit 23 acquires the target irradiation light amount M corresponding to the microorganism to be sterilized determined by using the selection screen 61 by referring to the correspondence table 60 stored in the NVM 12.
  • the irradiation condition determination unit 23 determines the irradiation condition using the acquired target irradiation light amount M. For example, when "new coronavirus" is selected as the microorganism to be sterilized, the irradiation condition determination unit 23 determines the irradiation conditions with the target irradiation light amount M as 10 (mJ / cm 2 ).
  • the irradiation condition determination unit 23 configured in the CPU 10 changes the target irradiation light amount M according to the type of the microorganism to be sterilized determined using the selection screen 61.
  • the target irradiation light amount M may be changed by a mechanical switch (for example, a DIIP (Dual In-line Package) switch).
  • the target irradiation light amount M may be changed by the user operating the DIP switch.
  • the user may operate the DIP switch to change the type of the microorganism to be sterilized, and the target irradiation light amount M may be changed according to the changed type of the microorganism.
  • the ultraviolet irradiation device 2 is a device independent of the medical device, but the ultraviolet irradiation device 2 may be a device included in the medical device such as a radiation diagnostic device. In this case, a user such as an operator can sterilize a portion with which the patient may come into contact in advance by using the ultraviolet irradiation device 2 before diagnosing the patient.
  • the objects of sterilization in medical equipment are wide-ranging, such as X-ray detectors, operation units, touch panels, and monitors, which the surgeon or patient often comes into contact with. Since these are installed in different places, the distance from the ultraviolet irradiation device 2 varies. Since the ultraviolet irradiation device 2 determines the irradiation condition based on the measured value of the distance L by the distance sensor 13 or the measured value of the reflected light amount by the light amount sensor 40, the irradiation condition is determined with respect to the object regardless of the distance to the object. It is possible to provide an appropriate amount of irradiation light necessary for sterilization.
  • FIG. 12 shows an example of an X-ray imaging system including an ultraviolet irradiation device 2.
  • the X-ray imaging system 100 includes an X-ray source 110, an imaging table 120, and an ultraviolet irradiation device 2.
  • the X-ray source 110 includes an X-ray tube 111 that emits an X-ray XR and an irradiation field limiting device 112 that limits the irradiation field of the X-ray XR.
  • the X-ray source 110 is suspended from the ceiling of the X-ray photographing room by a support column 113.
  • the column 113 is movably attached to the rail 115 fixed to the ceiling via the carriage 114.
  • the shooting table 120 has a stand 121, a connection portion 122, and a holder 123.
  • the stand 121 is erected on the floor of the X-ray imaging room.
  • the connection portion 122 connects the holder 123 to the stand 121 so as to be movable in the vertical direction.
  • the holder 123 houses the FPD 8 as an X-ray detector.
  • the ultraviolet irradiation device 2 is connected to the stand 121 of the photographing table 120 via, for example, a cable 124. Further, the ultraviolet irradiation device 2 is configured to be supplied with power from the stand 121 via the cable 124. The user can use the ultraviolet irradiation device 2 to sterilize, for example, the holder 123 that the patient frequently contacts, the FPD 8 taken out from the holder 123, and the like.
  • the ultraviolet irradiation device 2 may be attached to the recumbent position image pickup table (not shown). Further, the ultraviolet irradiation device 2 is not limited to the photographing table 120, and may be attached to the X-ray source 110, the wall of the X-ray photographing room, or the like. Further, the ultraviolet irradiation device 2 may be integrally configured with a handy type barcode reader for reading the barcode attached to the FPD 8.
  • FIG. 13 shows an example of a mobile X-ray imaging apparatus provided with an ultraviolet irradiation device 2.
  • FIG. 13 shows an X-ray round-trip vehicle 200 as an example of a mobile X-ray imaging apparatus.
  • the X-ray round-trip vehicle 200 has an X-ray source 210, a trolley 220, and an ultraviolet irradiation device 2.
  • the X-ray source 210 includes an X-ray tube 211 and an irradiation field limiter 212.
  • the dolly 220 has a plurality of wheels 221. Further, the dolly 220 is provided with a handle 222 for the user to move the dolly 220. Further, the dolly 220 is provided with an operation panel 223 for the user to perform various operations.
  • a support column 224 that can rotate about the vertical direction is erected.
  • An arm 225 that can move in the vertical direction is attached to the support column 224.
  • the X-ray source 210 is attached to the end of the arm 225.
  • the dolly 220 is provided with a folder 230 for storing the FPD 8 when not in use.
  • FPD8 is used, for example, in a state of being placed on the bed 240.
  • the X-ray source 210 is arranged at a position facing the FPD 8.
  • the ultraviolet irradiation device 2 is connected to the carriage 220 via, for example, a cable 226. Further, the ultraviolet irradiation device 2 is configured to be supplied with power from the carriage 220 via the cable 226. The user can use the ultraviolet irradiation device 2 to sterilize, for example, the handle 222, the operation panel 223, the FPD 8 and the like that the user frequently contacts.
  • FIG. 14 shows an example of a mobile X-ray imaging device in which the ultraviolet irradiation device 2 is incorporated.
  • the dolly 220 shown in FIG. 14 is a part of the X-ray round-trip vehicle 200 shown in FIG.
  • the ultraviolet irradiation device 2 is provided inside the trolley 220 so as to irradiate the FPD 8 stored in the folder 230 with ultraviolet UV.
  • the ultraviolet source 4 irradiates the inside of the folder 230 with ultraviolet UV through, for example, a translucent plate 17 provided at the boundary between the carriage 220 and the folder 230.
  • the distance sensor 13 measures the distance to the FPD 8 stored in the folder 230.
  • the folder 230 is configured to be able to store a plurality of FPD8s.
  • the folder 230 is provided with, for example, three storage units of a first storage unit 231A, a second storage unit 231B, and a third storage unit 231C.
  • the distance from the ultraviolet source 4 to the FPD 8 changes depending on which storage portion the FPD 8 is stored in. Also in this modification, the CPU 10 can determine the optimum irradiation condition by using the measured value of the distance by the distance sensor 13.
  • the folder 230 is provided with, for example, a detection switch (not shown) for detecting that the FPD 8 is stored.
  • the CPU 10 starts measuring the distance to the FPD 8 by the distance sensor 13 and irradiating the ultraviolet UV by the ultraviolet source 4.
  • the CPU 10 may start irradiation of the ultraviolet source 4 with ultraviolet UV based on an operation signal from the operation panel 223 (see FIG. 13).
  • detection switches may be provided in each of the first storage unit 231A, the second storage unit 231B, and the third storage unit 231C.
  • the CPU 10 can determine the distance from the ultraviolet source 4 to the FPD 8 by determining which detection switch is turned on when the FPD 8 is stored in the folder 230.
  • the ultraviolet irradiation device 2 is built in the carriage 220, but may be built in the folder 230. It is also possible to incorporate the ultraviolet irradiation device 2 in a cradle that can charge a plurality of FPDs 8.
  • the cradle has the same structure as the folder 230 shown in FIG.
  • FIG. 15 shows an example of a cassette storage shelf in which the ultraviolet irradiation device 2 is incorporated.
  • the cassette storage shelf 300 is provided with a first storage unit 301 in the upper stage and a second storage unit 302 in the lower stage.
  • the ultraviolet irradiation device 2 is incorporated in the top plate 303 on the upper part of the first storage portion 301.
  • the ultraviolet source 4 is, for example, a surface light source, and emits ultraviolet UV from the entire wide surface.
  • the ultraviolet source 4 is, for example, a UV-LED surface light source in which a plurality of LEDs are arranged two-dimensionally.
  • the ultraviolet source 4 irradiates the FPD 8 mounted on the first storage unit 301 with ultraviolet UV. Since a plurality of FPDs 8 can be stacked and stored in the first storage unit 301, the distance from the ultraviolet source 4 to the uppermost FPD8 changes.
  • a plurality of light amount sensors 40 are provided in the vicinity of the ultraviolet source 4.
  • the CPU 10 estimates the distance from the ultraviolet source 4 to the FPD 8 of the uppermost layer based on the average value or the minimum value of the reflected light amount measured by the plurality of light amount sensors 40, and determines the irradiation condition based on the estimated distance. do.
  • the cassette storage shelf 300 may be provided with an irradiation start switch (not shown) for starting irradiation of ultraviolet UV rays by the ultraviolet source 4. Further, a detection switch (not shown) for detecting that the FPD 8 is stored may be provided in the first storage unit 301. In this case, when the detection switch detects that the FPD 8 is housed, the CPU 10 starts measuring the amount of reflected light by the light amount sensor 40 and irradiating ultraviolet UV rays by the ultraviolet source 4.
  • the ultraviolet irradiation device 2 may be similarly incorporated in the shelf board 304 between the first storage unit 301 and the second storage unit 302. As a result, the FPD 8 can be appropriately sterilized regardless of whether the FPD 8 is stored in either the first storage unit 301 or the second storage unit 302.
  • FIG. 16 shows an example of an ultraviolet source 4 configured as a surface light source.
  • the ultraviolet source 4 can be composed of a light emitting unit 4A and a light guide unit 4B.
  • the light emitting unit 4A is composed of an element such as an LED that generates ultraviolet UV rays.
  • the light emitting unit 4A may be a lamp that generates ultraviolet UV rays such as an excimer lamp.
  • the light guide unit 4B is composed of a light guide plate, a light guide film, or a member for guiding ultraviolet UV rays such as an optical fiber.
  • the light guide unit 4B guides the ultraviolet UV emitted by the light emitting unit 4A and emits the ultraviolet UV to the outside to emit the ultraviolet UV from the entire surface.
  • the light emitting unit 4A is provided along one side of the rectangular light guide unit 4B, but the light emitting unit 4A may be provided along a plurality of sides.
  • the ultraviolet source 4 configured as a surface light source can have a curved surface shape because the light guide portion 4B can be made flexible.
  • the ultraviolet source 4 can have a dome shape.
  • FIG. 17 shows an example in which the entire surface of the FPD 8 is irradiated with ultraviolet UV rays by covering the FPD 8 with a dome-shaped ultraviolet source 4.
  • a plurality of light amount sensors 40 are provided on the inner surface side of the dome-shaped ultraviolet source 4.
  • the CPU 10 estimates the distance from the ultraviolet source 4 to the FPD 8 based on the average value or the minimum value of the reflected light amount measured by the plurality of light amount sensors 40, and is based on the estimated distance. And determine the irradiation conditions.
  • the ultraviolet source 4 into a bag shape that can be freely deformed.
  • forming the ultraviolet source 4 into a bag shape in this way medical equipment and the like can be easily and quickly sterilized. For example, sterilization can be performed with the handle, operation panel, X-ray source, or the like of the X-ray round-trip car covered with the bag-shaped ultraviolet source 4.
  • the ultraviolet irradiation device 2 of the fifth modification includes a visible light source 400 in addition to the ultraviolet source 4.
  • the visible light source 400 is an LED or a semiconductor laser, and its operation is controlled by the CPU 10.
  • the visible light source 400 irradiates the entire region slightly larger than the irradiation region R, including the irradiation region R of ultraviolet UV, with the visible light VL.
  • the CPU 10 when the irradiation start button 5 is pressed (ON) and an irradiation start signal is input, the CPU 10 first causes the visible light source 400 to start (ON) irradiation of visible light VL.
  • the CPU 10 irradiates the visible light source 400 with the visible light VL for the preset irradiation time TA, and then stops (OFF) the irradiation of the visible light VL.
  • the CPU 10 causes the ultraviolet source 4 to start (ON) irradiate the ultraviolet UV. Since the subsequent processing is the same as that of the above embodiment, the description thereof will be omitted.
  • the irradiation time TA is several seconds, for example, 5 seconds.
  • the visible light source 400 independently of the ultraviolet source 4, it is possible to individually control the irradiation timing of the ultraviolet UV by the ultraviolet source 4 and the irradiation timing of the visible light VL by the visible light source 400. .. Therefore, as shown in FIG. 20, it is possible to perform control such as first irradiating the visible light VL to make the user recognize the irradiation region R of the ultraviolet UV, and then irradiating the ultraviolet UV. By doing so, it is possible to make appropriate preparations before irradiating the ultraviolet UV, such as adjusting the position of the ultraviolet irradiation device 2 so that the ultraviolet UV is effectively irradiated to the object.
  • the visible light source 400 is irradiated with visible light VL by one-step press (half-press), and the ultraviolet source 4 is irradiated with ultraviolet UV by two-step press (full press). good.
  • the embodiment shown in FIG. 21 may be adopted.
  • the CPU 10 continues the irradiation of the visible light VL by the visible light source 400 even after the irradiation time TA elapses, and irradiates the visible light VL even during the irradiation of the ultraviolet UV. Then, when the irradiation light amount of the ultraviolet UV in the object reaches the target irradiation light amount M, the irradiation of the ultraviolet UV is stopped, and the irradiation of the visible light VL by the visible light source 400 is also stopped. By doing so, the user can be made to recognize the irradiation region R of the ultraviolet UV even during the irradiation of the ultraviolet UV, and the object can be more effectively irradiated with the ultraviolet UV.
  • the visible light source 400 has a wavelength conversion element or the like, and has a configuration in which the emission color can be switched.
  • the CPU 10 causes the visible light source 400 to irradiate the visible light source 400 with red light as visible light VL while irradiating with ultraviolet UV rays.
  • the CPU 10 causes the visible light source 400 to irradiate the visible light source 400 as visible light VL in accordance with the fact that the irradiation of the ultraviolet UV is stopped when the irradiation light amount of the ultraviolet UV in the object reaches the target irradiation light amount M.
  • the CPU 10 causes the visible light source 400 to irradiate the visible light source 400 with green light during the preset irradiation time TB.
  • the irradiation time TB is several seconds, for example, 5 seconds.
  • the visible light source 400 is irradiated with red light during the irradiation of the ultraviolet UV, and the visible light source 400 is irradiated with the green light in accordance with the stop of the irradiation of the ultraviolet UV, so that the ultraviolet UV is being irradiated. , It is possible to inform the user that the irradiation of ultraviolet UV has been stopped in an easy-to-understand manner.
  • the ultraviolet UV irradiation region R is divided into two regions, a central region RC and a peripheral region RP, and the entire central region RC is irradiated with visible light VLC of red light to irradiate the periphery. Visible light VLP of yellow light may be applied to the entire region RC. By doing so, the user can recognize the central region RC having a relatively strong irradiation intensity K and the peripheral region RP having a relatively weak irradiation intensity K. It is possible to more effectively irradiate the object with ultraviolet rays, such as by addressing the central region RC to the part of the object to be sterilized intensively.
  • the irradiation region R may be divided into three or more regions, and each of the three or more regions may be irradiated with visible light of a different color.
  • the irradiation prohibition condition 410 as shown in FIG. 24 is set as an example.
  • the irradiation prohibition condition 410 is such that the measured value of the distance L from the ultraviolet source 4 to the object by the distance sensor 13 is farther than the effective distance (measured value of the distance L> effective distance).
  • the effective distance is several tens of centimeters to several meters, for example, 2 m, although it depends on the irradiation intensity K of ultraviolet UV rays, the type of microorganism to be sterilized, and the like.
  • the CPU 10 causes the distance sensor 13 to measure the distance L to the object in step S12, and then the measured value of the distance L and the irradiation prohibition condition 410. Compare with effective distance.
  • the CPU 10 prohibits the irradiation of ultraviolet UV rays by the ultraviolet source 4 (step S21). Then, the user is notified that the irradiation of the ultraviolet UV is prohibited by displaying a message to the effect that the irradiation of the ultraviolet UV is prohibited on the operation display unit 6 (step S22).
  • the CPU 10 when the distance L from the ultraviolet source 4 to the object measured by the distance sensor 13 is farther than the preset effective distance, the CPU 10 emits ultraviolet rays from the ultraviolet source 4. UV irradiation is prohibited. Therefore, it is possible to prevent the ultraviolet UV from being unnecessarily irradiated at a distance L where the bactericidal effect cannot be expected. Further, as the distance L from the ultraviolet source 4 to the object increases, the irradiation region R of the ultraviolet UV becomes larger, and the possibility that the person around the object is irradiated with the ultraviolet UV increases, but such a possibility is reduced. be able to.
  • the embodiment shown in FIG. 26 may be adopted.
  • the CPU 10 causes the distance sensor 13 to measure the distance L to the object after the ultraviolet source 4 is started to irradiate the ultraviolet UV (step S14) (step S25).
  • the CPU 10 compares the measured value of the distance L with the effective distance.
  • the CPU 10 prohibits the irradiation of ultraviolet UV rays by the ultraviolet source 4 (step S27).
  • the user is notified that the irradiation of the ultraviolet UV is prohibited by displaying a message to the effect that the irradiation of the ultraviolet UV is prohibited on the operation display unit 6 (step S28).
  • the irradiation of the ultraviolet UV by the ultraviolet source 4 may be prohibited. By doing so, it is possible to further prevent the ultraviolet UV from being unnecessarily irradiated, and it is possible to further reduce the possibility that the person around the object is irradiated with the ultraviolet UV.
  • the irradiation prohibition condition 415 as shown in FIG. 27 is set as an example.
  • the irradiation prohibition condition 415 is such that the measured value of the reflected light amount of the ultraviolet UV by the light amount sensor 40 is less than a preset threshold value (measured value of the reflected light amount ⁇ threshold value).
  • the threshold value is set to the amount of reflected light when the distance L from the ultraviolet source 4 to the object is an effective distance.
  • the CPU 10 is pre-irradiated with ultraviolet UV rays to cause the light amount sensor 40 to measure the reflected light amount of the ultraviolet UV rays (step S30), and then the reflected light amount is measured. The measured value is compared with the threshold value of the irradiation prohibition condition 415. When the measured value of the reflected light amount is less than the threshold value (step S31: YES), the CPU 10 prohibits the irradiation of ultraviolet UV rays by the ultraviolet source 4 (step S32). Then, the user is notified that the irradiation of the ultraviolet UV is prohibited by displaying a message to the effect that the irradiation of the ultraviolet UV is prohibited on the operation display unit 6 (step S33).
  • the CPU 10 prohibits the irradiation of the ultraviolet UV by the ultraviolet source 4 when the reflected light amount of the ultraviolet UV measured by the light amount sensor 40 is less than the preset threshold value. Therefore, as in the case of the sixth modification, it is possible to prevent the ultraviolet UV from being unnecessarily irradiated at a distance L where the bactericidal effect cannot be expected. In addition, it is possible to reduce the possibility that the person around the object is irradiated with ultraviolet UV rays.
  • irradiation of ultraviolet UV by the ultraviolet source 4 is prohibited even when the measured value of the reflected light amount of ultraviolet UV is less than the threshold value during the irradiation of ultraviolet UV, as in the case of the sixth A modification. You may.
  • a message notifying the irradiation state of ultraviolet rays UV may be displayed on the operation display unit 6.
  • an indicator such as an LED for notifying that ultraviolet rays UV is being irradiated may be provided.
  • the indicator is provided on the rear surface side of the main body portion 3A as in the operation display unit 6 so that the user who is operating the ultraviolet irradiation device 2 can visually recognize the indicator.
  • the fact that ultraviolet rays UV are being irradiated may be notified by sound, vibration, or the like.
  • the ultraviolet irradiation device 2 may be attached to a radiation diagnostic device such as a CT (Computed Tomography) device or a mammography device. Further, the medical device to which the ultraviolet irradiation device 2 is attached is not limited to the radiation diagnostic device, and may be an ultrasonic diagnostic device that acquires an ultrasonic image.
  • the hardware of the processing unit that executes various processes such as the irradiation control unit 20, the display control unit 21, the operation signal acquisition unit 22, the irradiation condition determination unit 23, and the elapsed time measurement unit 24, for example.
  • the hardware-like structure is various processors as shown below.
  • processors include a CPU, a programmable logic device (PLD: Programmable Logic Device), a dedicated electric circuit, and the like.
  • a CPU is a general-purpose processor that executes software (program) and functions as various processing units.
  • PLD is a processor such as FPGA (Field Programmable Gate Array) whose circuit configuration can be changed after manufacturing.
  • a dedicated electric circuit is a processor having a circuit configuration specially designed for executing a specific process such as an ASIC (Application Specific Integrated Circuit).
  • One processing unit may be composed of one of these various processors, or may be composed of a combination of two or more processors of the same type or different types (for example, a plurality of FPGAs or a combination of a CPU and an FPGA). May be done. Further, a plurality of processing units may be configured by one processor. As an example of configuring a plurality of processing units with one processor, first, there is a mode in which one processor is configured by a combination of one or more CPUs and software, and this processor functions as a plurality of processing units. Secondly, as typified by a system on chip (SoC), there is a mode in which a processor that realizes the functions of the entire system including a plurality of processing units with one IC chip is used. As described above, the various processing units are configured by using one or more of the above-mentioned various processors as a hardware-like structure.
  • SoC system on chip
  • the hardware-like structure of these various processors is, more specifically, an electric circuit (circuitry) in which circuit elements such as semiconductor elements are combined.
  • Appendix 1A An ultraviolet source that irradiates ultraviolet rays for sterilization, and A visible light source that irradiates visible light indicating the ultraviolet irradiation region, UV irradiation device equipped with.
  • Appendix 2A The ultraviolet irradiation device according to Item 1A, which comprises a processor for controlling the operation of the ultraviolet source and the visible light source.
  • Appendix 3A The ultraviolet irradiation device according to Item 2A, wherein the processor irradiates the visible light from the visible light source and then irradiates the ultraviolet rays from the ultraviolet source when the start of irradiation of the ultraviolet rays is instructed.
  • Appendix 4A It is equipped with an irradiation start button for instructing the start of irradiation of the ultraviolet rays.
  • the ultraviolet irradiation device according to Appendix 3A, wherein the processor controls the irradiation of visible light and the irradiation of ultraviolet rays in response to the operation of the irradiation start button.
  • the processor stops the irradiation of the ultraviolet rays by the ultraviolet source when the preset irradiation stop condition is satisfied. Any one of Supplementary Items 2A to 4A, wherein the visible light source is irradiated with the visible light during the irradiation of the ultraviolet rays, and the irradiation of the visible light by the visible light source is stopped in accordance with the stop of the irradiation of the ultraviolet rays.
  • the processor stops the irradiation of the ultraviolet rays by the ultraviolet source when the preset irradiation stop condition is satisfied.
  • the visible light source is irradiated with the visible light of the first color, and when the irradiation of the ultraviolet rays is stopped, the visible light of a second color different from the first color is visible.
  • the ultraviolet irradiation device according to any one of Supplementary Items 2A to 4A, wherein the light source is irradiated with light.
  • the case where it is determined that the irradiation light amount of the ultraviolet UV in the object has reached the target irradiation light amount M is an example of "when the preset irradiation stop condition is satisfied" in the appendix 5A and the appendix 6A.
  • the preset irradiation stop condition when the elapsed time from the start of ultraviolet UV irradiation becomes the preset ultraviolet UV irradiation time T, and by the user, ultraviolet rays are emitted. For example, when it is instructed to stop UV irradiation.
  • red light shown in FIG. 22 is an example of the "visible light of the first color" of the appendix 6A
  • the green light is an example of the "visible light of the second color" of the appendix 6A. ..
  • the red visible light VLC and the yellow visible light VLP are examples of "visible light of different colors" in Appendix 7A.
  • the visible light source is With the ultraviolet source Any of Supplementary Items 1A, 2A, and 5A, which is provided on the outer peripheral portion of the ultraviolet emission area and includes a visible light conversion unit that converts a part of the ultraviolet rays from the ultraviolet source into visible light.
  • the ultraviolet irradiation device according to item 1.
  • UV irradiation device equipped with.
  • the measurement sensor is a distance sensor that measures the distance from the ultraviolet source to the object as the physical quantity.
  • the ultraviolet irradiation device according to Item 1B, wherein the processor prohibits irradiation of the ultraviolet rays by the ultraviolet source when the distance is farther than a preset effective distance.
  • the measurement sensor is a light quantity sensor that measures the amount of reflected light of the ultraviolet rays from the object as the physical quantity.
  • the ultraviolet irradiation device according to Item 1B, wherein the processor prohibits irradiation of the ultraviolet rays by the ultraviolet source when the reflected light amount is less than a preset threshold value.
  • the present invention is not limited to each of the above embodiments, and various configurations can be adopted as long as the gist of the present invention is not deviated. Further, in addition to the program, the present invention extends to a computer-readable storage medium that stores the program non-temporarily.

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

Dispositif d'exposition aux UV comprenant : une source UV destinée à émettre des rayons UV en direction d'un objet ; un capteur de mesure destiné à mesurer une quantité physique relative à l'éclairement des rayons UV auxquels est exposé l'objet ; et un processeur qui, sur la base de la valeur mesurée pour la quantité physique, commande la durée de l'exposition aux rayons UV et/ou l'intensité d'émission des rayons UV par la source UV, afin d'obtenir une quantité de lumière rayonnée cible destinée à stériliser l'objet.
PCT/JP2021/042480 2020-12-23 2021-11-18 Dispositif d'exposition aux uv, équipement médical et procédé de commande de dispositif d'exposition aux uv WO2022137920A1 (fr)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01308550A (ja) * 1988-06-06 1989-12-13 Sumitomo Electric Ind Ltd 血管内レーザ手術装置
JPH09253083A (ja) * 1996-03-27 1997-09-30 Toshiba Corp 医用機器
JP2014508612A (ja) * 2011-03-07 2014-04-10 ザ トラスティーズ オブ コロンビア ユニバーシティ イン ザ シティ オブ ニューヨーク バクテリアに選択的に作用するとともに／又は殺菌する装置、方法及びシステム
JP2016193059A (ja) * 2015-03-31 2016-11-17 株式会社トクヤマ 紫外線殺菌装置
US20180193502A1 (en) * 2017-01-12 2018-07-12 UD Innovations, LLC Portable uv-c disinfection apparatus, method, and system
JP2018126522A (ja) * 2014-09-19 2018-08-16 シャープ株式会社 医療用殺菌装置及びその使用方法、並びに、医療具及びその使用方法
WO2019164810A1 (fr) * 2018-02-20 2019-08-29 Freestyle Partners, LLC Dispositif portatif et jetable à uvc lointain

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01308550A (ja) * 1988-06-06 1989-12-13 Sumitomo Electric Ind Ltd 血管内レーザ手術装置
JPH09253083A (ja) * 1996-03-27 1997-09-30 Toshiba Corp 医用機器
JP2014508612A (ja) * 2011-03-07 2014-04-10 ザ トラスティーズ オブ コロンビア ユニバーシティ イン ザ シティ オブ ニューヨーク バクテリアに選択的に作用するとともに／又は殺菌する装置、方法及びシステム
JP2018126522A (ja) * 2014-09-19 2018-08-16 シャープ株式会社 医療用殺菌装置及びその使用方法、並びに、医療具及びその使用方法
JP2016193059A (ja) * 2015-03-31 2016-11-17 株式会社トクヤマ 紫外線殺菌装置
US20180193502A1 (en) * 2017-01-12 2018-07-12 UD Innovations, LLC Portable uv-c disinfection apparatus, method, and system
WO2019164810A1 (fr) * 2018-02-20 2019-08-29 Freestyle Partners, LLC Dispositif portatif et jetable à uvc lointain

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