WO2012096077A1 - 医療用光源装置 - Google Patents
医療用光源装置 Download PDFInfo
- Publication number
- WO2012096077A1 WO2012096077A1 PCT/JP2011/078209 JP2011078209W WO2012096077A1 WO 2012096077 A1 WO2012096077 A1 WO 2012096077A1 JP 2011078209 W JP2011078209 W JP 2011078209W WO 2012096077 A1 WO2012096077 A1 WO 2012096077A1
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- WIPO (PCT)
- Prior art keywords
- light source
- unit
- illumination unit
- switch
- illumination
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/0661—Endoscope light sources
- A61B1/0692—Endoscope light sources head mounted
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/08—Devices for easy attachment to any desired place, e.g. clip, clamp, magnet
- F21V21/084—Head fittings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
- F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
- F21V23/0492—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor detecting a change in orientation, a movement or an acceleration of the lighting device, e.g. a tilt switch
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B25/00—Eyepieces; Magnifying glasses
- G02B25/002—Magnifying glasses
- G02B25/004—Magnifying glasses having binocular arrangement
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B25/00—Eyepieces; Magnifying glasses
- G02B25/02—Eyepieces; Magnifying glasses with means for illuminating object viewed
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/002—Mounting on the human body
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C11/00—Non-optical adjuncts; Attachment thereof
- G02C11/04—Illuminating means
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/105—Controlling the light source in response to determined parameters
- H05B47/115—Controlling the light source in response to determined parameters by determining the presence or movement of objects or living beings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/20—Lighting for medical use
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Definitions
- the present invention relates to a medical light source device that irradiates light on a treatment target portion with a light source during medical treatment.
- a medical light source device used for medical treatment irradiates an affected part by placing a light source on the upper part behind an operator (operator).
- a light source on the upper part behind an operator (operator).
- the total amount of illumination is increased, but when the illumination is fixedly installed on the ceiling of the treatment room, etc. A sufficient amount of light may not reach the target area due to shadows.
- an object of the present invention is to provide a medical light source device capable of ensuring a long illumination time necessary for use in surgery at a medical site.
- the present invention provides, as a first aspect thereof, a medical light source device that is attached to an operator's body and irradiates light on a target portion of a medical treatment, and includes an illumination source that includes the light source.
- the medical light source device characterized by the above is provided.
- the present invention provides, as a second form thereof, a medical light source device that is attached to an operator's body and irradiates light to a target portion of a medical treatment, the illumination unit including a light source, and the illumination unit including the illumination unit A holder to be worn on the operator's body; a battery power supply for supplying power to the illumination unit; a charger connected to a commercial power supply and having an AC adapter for charging the battery power supply; A battery holding belt for mounting the battery power supply unit and the charger on an operator's body, the battery holding belt electrically connecting with a terminal of the battery power supply unit, and the AC adapter And a means for electrically connecting the battery to the battery power source.
- a medical light source device is provided.
- an acceleration sensor that detects the movement of the operator is provided, and the movement of the operator is detected by the acceleration sensor, thereby controlling a decrease in illuminance of the illumination unit or a stop of energization of the illumination unit. Reduce consumption of AC power or DC battery power.
- the battery power supply unit is characterized in that when the commercial power supply is interrupted or the connection to the AC adapter is interrupted, the power supply to the illumination unit is continued without causing an instantaneous supply interruption. .
- the holding tool is a binocular loupe attached to the operator's head.
- the holding tool is a cap or a headband that covers an operator's head.
- the battery holding belt is characterized in that it is a belt that turns around the operator's waist.
- the illumination part is provided with the mounting means which makes it possible to detachably attach to the holder.
- the battery power unit includes a plurality of batteries, and the battery holding belt holds the battery in a state where the battery is embedded in the belt.
- a switch unit that adjusts on / off of the illumination unit and illumination intensity
- a control unit that controls energization of the illumination unit with a certain amount of current according to the designation of illumination intensity when the illumination unit is on / off. , Is provided.
- the controller is configured to control lighting of the illuminating unit by ON / OFF of the illuminating unit and pulse driving with a duty ratio according to the designation of the illumination intensity.
- control unit performs both control of the illumination unit and charge control to the battery power supply unit in a state where the charger is connected.
- switch unit and the control unit are integrated to form a control unit, and the control unit is held by the battery holding belt.
- a fan for cooling the illumination part is attached to the holder.
- the fan is incorporated in the casing of the illumination unit so as to cool the light source.
- a third aspect of the present invention is a medical light source device that is attached to an operator's body and irradiates light to a target portion of medical treatment, and has durability even when an energization current exceeds a rated value.
- An illumination unit including a light source; a holder for mounting the illumination unit on the operator's body; a power supply unit for supplying power to the illumination unit; and an average flowing from the power supply unit to the illumination unit
- a control unit including a current control circuit that changes a current value from a rated value to an increased value larger than the rated value, a first switch for lighting the illumination unit, and a lighting unit for lighting the illumination unit with an increased amount of light
- a medical light source comprising: a second switch; and the control unit causes the current of the increased value to flow through the illumination unit for a predetermined period in response to an ON operation of the second switch.
- an acceleration sensor that detects the movement of the operator is further provided, and the control unit detects the movement of the operator by the acceleration sensor, thereby reducing the illuminance of the illumination unit or supplying the illumination unit to the illumination unit. Controls de-energization.
- the predetermined period is set based on a temperature rise time characteristic of the light source caused by the flow of the increased current.
- the predetermined period is set such that the temperature of the light source within the predetermined period does not exceed a maximum allowable value based on a temperature rise time characteristic of the light source.
- an increase value larger than the rated value is set in a plurality of stages, and is selected by operating the second switch.
- control unit performs the ON operation of the second switch until the temperature of the light source decreases to a rated allowable value or less. Is also characterized in that the flow of the increased current to the illumination unit is stopped.
- the present invention is a medical light source device that is attached to an operator's body and irradiates light to a target portion of medical treatment, and has durability even when an energization current exceeds a rated value.
- An illumination unit including a light source; a holder for mounting the illumination unit on the operator's body; a power supply unit for supplying power to the illumination unit; and an average flowing from the power supply unit to the illumination unit
- a control unit including a current control circuit that changes a current value from a rated value to an increased value larger than the rated value, a first switch for lighting the illumination unit, and a lighting unit for lighting the illumination unit with an increased amount of light
- At least one second switch and a temperature sensor for detecting the temperature of the light source, and the controller is configured to control the temperature of the light source in advance in response to an ON / OFF operation of the second switch. Range that does not exceed the set maximum allowable value
- a medical light source device characterized by supplying a current of the increased value
- an acceleration sensor that detects the movement of the operator is further provided, and the control unit detects the movement of the operator by the acceleration sensor, thereby reducing the illuminance of the illumination unit or supplying the illumination unit to the illumination unit. Controls de-energization.
- an increase value larger than the rated value is set in a plurality of stages, and is selected by operating the second switch.
- control unit sets the increase value to the illumination unit even if the second switch is turned on. It is characterized by stopping the flow of current.
- a medical light source device is provided.
- the necessary power supply unit can be secured to the operator's body by holding the power supply unit that supplies power to the illumination unit with the belt that can be attached to a part of the body. it can.
- the light source device using the light source that can be worn on the operator's body, when it is necessary to particularly increase the amount of light, the light source is not deteriorated due to the heat generation and is not more than the maximum value over a predetermined period.
- the amount of light can be increased without using a complicated configuration. Therefore, there is no need for a large-capacity battery power supply unit or special heat dissipation measures, and a miniaturized medical light source device is provided.
- FIG. 1 shows a circuit configuration in which a pulse drive system is employed in a current control circuit according to an embodiment of the present invention. It is a block diagram which shows the electric circuit of the medical light source device which concerns on the 4th Embodiment of this invention. It is explanatory drawing when the holding tool which concerns on the 4th Embodiment of this invention is used as a binocular loupe. It is a figure which shows the circuit structure of a power supply part when a medical light source device of this invention is supplied with power from AC commercial power supply. It is a figure which shows the structure of the illumination part which incorporated the fan for cooling in a side cross section.
- the medical light source device is configured to hold the power supply unit on the operator's body.
- the illuminating unit 1 is mounted on the head of the operator 40 while being held by a binocular loupe worn by the operator 40. Therefore, in this example, the binocular loupe functions as the holder 7.
- the light source of the illuminating unit 1 an LED is used in this embodiment, but is not limited thereto.
- the holding belt 8 of the power supply unit is wound around the waist as a part of the operator 40 body.
- the power supply unit 3 and the control unit 10 are attached to the holding belt 8. It has been.
- the power supply unit 3 is connected to the control unit 10, and the control unit 10 supplies an appropriate driving current to the illumination unit 1 through the cord 42 to control the illumination operation.
- Power supply unit An AC power supply or a DC power supply may be used.
- the battery power supply unit 3 is not limited to a plurality, and a single large battery power supply unit 3 is sufficient if a stable power supply can be supplied to the illumination unit 1 for a long time. In some cases, even such a heavy battery power source can be attached to the body by attaching it to the battery holding belt 8.
- the illumination unit 1 is an AC power supply type light source
- the DC voltage from the battery is converted from a DC voltage to an AC voltage (an AC voltage having a desired frequency) by an inverter (DC / AC converter).
- the power source unit 3 includes not only a DC power source by a battery but also an AC power source obtained by AC conversion from DC.
- the AC commercial power source itself from the power cord can be used as the power source of the illumination unit.
- the control unit 10 controls the charging of the battery power supply unit 3 when the charger 6 with the plug inserted into the outlet 41 is connected.
- the control unit 10 illuminates the lighting unit 1 while charging the battery power supply unit 3. The action can be performed.
- the operator can perform the treatment while holding the battery power supply unit 3 with the holding belt 8 attached to a part of the body, and is suitable as a medical light source device that requires a long-time treatment. Moreover, the operation
- the control unit 10 attached to the battery holding belt 8 can control the energization of the illuminating unit 1 so that stable illuminance can be obtained. From this aspect, the light source device is suitable for medical treatment.
- the power supply unit is attached to the holding belt, and the operator wears the holding belt holding the power supply unit on a part of the body.
- the power source is a DC power source
- FIG. 2 is a block diagram showing an electric circuit, which includes an illumination unit 1 having an LED as a light source, an illumination drive unit 2, a plurality of rechargeable lithium ion battery power supply units 3 connected in series or in parallel, for example, A control unit 4 constituted by an MPU board; a switch unit 5 having three kinds of change-over switches 5B for adjusting the illumination intensity of the power on / off switch 5A and the illumination unit 1 to high, medium and low; An AC adapter as a charger 6 that charges the battery power supply unit 3 is configured.
- the illumination drive unit 2, the control unit 4, and the switch unit 5 constitute a control unit 10 together.
- the illumination unit 1 and the battery power supply unit 3 are configured separately from the control unit 10, but are electrically connected during operation. Further, the charger 6 can be connected to the control unit 10 as necessary.
- the control unit 4 controls the light emission operation of the illumination unit 1 through the illumination drive unit 2 when the power on signal is input from the switch unit 5 by turning on the power on / off switch 5A.
- the control unit 4 causes the illumination drive unit to apply a constant current according to the designated light intensity at this time. 2 is controlled.
- FIG. 6 shows a configuration of an illumination drive unit 2 that drives the illumination unit 1 with a constant current.
- the illumination drive unit 2 includes an LED 29 of the illumination unit 1 and a drive transistor 23 connected on the collector side thereof, a resistor 24 connected to the emitter side of the transistor 23 and having the other end grounded, A constant voltage diode 25 connected to the power supply terminal 28 in parallel, a resistor 26 having one end connected to the constant voltage diode 25 and the other end grounded, and a midpoint between the constant voltage diode 25 and the resistor 26 is the + input.
- an operational amplifier 27 whose output side is connected to the base side of the transistor 23 and whose emitter side is connected to the negative input side thereof.
- the other end of the LED 29 of the illumination unit 1 connected to the collector side of the transistor 23 is connected to a power supply terminal 28 to which the power of the battery power supply unit 3 is supplied.
- the control unit 4 supplies a voltage corresponding to a specified illumination intensity based on the operation of the changeover switch 5B to the power supply terminal 28, the transistor 23 is applied with the base voltage by the operational amplifier 27.
- the LED 29 is on and current flows through the LED 29.
- a current also flows through the path of the constant voltage diode 25 and the resistor 26, and the terminal voltage of the resistor 26 applied to the + input side of the operational amplifier 27 is constant.
- the operational amplifier 27 is configured to turn off the transistor 23. The voltage is controlled so that no current flows through the LED. Constant current operation can be performed by always repeating this.
- the light emission operation of the illumination unit 1 is not limited to the above-described constant current driving method, but the illumination unit can be controlled by controlling the duty ratio according to the designation of illumination intensity using a switch device on the circuit, such as a transistor or a MOSFET.
- a pulse driving method for controlling the current flowing to 1 may be used.
- FIG. 7 shows a configuration of the illumination driving unit 2 by a pulse driving method.
- a MOSFET is used as the switch device 31 and connected to the gate side so that a PWM (Pulse Width Modulation) signal from the pulse generator 32 is input, and when the PWM signal becomes high level, the switch device 31 31 is turned on, and a current flows from the input side connected to the power supply terminal 36 to which the voltage of the battery power supply unit 3 is applied to the load side.
- PWM Pulse Width Modulation
- An LED 34 and a resistor 37 of the illumination unit 1 are connected to the load side of the switch device 31 and grounded.
- a smoothing circuit including a coil, 32, and a capacitor 33 is provided in the preceding stage to output a pulse by switching operation. Are averaged and output.
- a diode 35 is provided in front of the coil 32 in order to keep supplying current to the coil 32 even when the switch device 31 is turned off. Thereby, if the ON time (OFF time) of the switch device 31 is controlled, the electric current which flows into the illumination part 1 can be adjusted efficiently. Therefore, in this case, the control unit 4 can adjust the brightness of the illumination unit 1 by performing control to change the duty ratio of the pulse generator 32.
- the control unit 4 checks the power supply capacity of the battery power supply unit 3. When a voltage drop is detected, the control unit 4 turns on the indicator 9 to give a warning, and when the charger 6 is connected to the control unit 10. Then, the battery power supply unit 3 is charged by controlling the current supply for charging the battery power supply unit 3 from the charger 6.
- a light source other than LED can be used as the light source.
- LED when LED is used, LED light generates a small amount of heat, and the irradiation target is affected by heat even when irradiated for a long time. There are difficult advantages. Therefore, in a medical operation for several hours, it is excellent as a light source for a medical operation because it does not damage a human tissue.
- the illuminating unit 1 In order to attach the illuminating unit 1 to the operator's head, the illuminating unit 1 is attached using the binocular loupe as a holder 7 in the example of FIG.
- the binocular loupe is widely used in various fields such as the medical field, precision work, and jewelry processing as a means of magnifying and visually recognizing a local visual object at hand.
- a binocular loupe main body 12 (primary mirror) for enlarging the image of the work object
- a main mirror attachment portion 13 for attaching the binocular loupe main body 12 to the main mirror attachment frame 11, and the visual acuity of the precision operator
- It comprises a focus adjustment unit 14 capable of compensation, a primary mirror mounting carrier lens 15 for mounting a binocular loupe body, and a frame vine portion 16 for mounting to a precision operator.
- the illumination unit 1 attaches the illumination unit 1 to the bridge 17 of the binocular loupe by the mounting means 18.
- the mounting means 18 includes a pair of opposing plates 52 that sandwich the binocular loupe bridge 17, screw holes 51 provided in the opposing plates 52, and screws 50.
- the screws 50 are also formed on the binocular loupe bridge 17.
- the illumination part 1 is attached to the binocular loupe by passing through the through hole and the screw hole 51 of the counter plate 52 and tightening.
- the energization cord 19 from the control unit 10 to the illuminating unit 1 is held on the primary mirror mounting frame 11 and the frame vine portion 16 by appropriate means (not shown) so as to hang down from the front of the operator's body. To prevent.
- the deep depth of focus required for the binocular loupe can be realized deeper.
- the holder 7 is not limited to such a binocular loupe, and may be a hat or a headband.
- FIG. 4 shows an example in which the headband is used as the holder 7, and the illumination unit 1 is attached to the headband.
- the headband is made of a resin member, and can be fixed by being held on the operator's head by its elasticity.
- the headband is not limited to such a configuration, and there are various forms of materials such as cloth and rubber.
- the headband illustrated in FIG. 4 is configured by integrally illuminating unit 1 and the headband.
- the mounting means 18 using the screw 50 shown in FIG. If the illuminating unit 1 is appropriately detachable from the headband by the mounting means according to, various general-purpose headbands can be used as the holder 7.
- the illuminating unit 1 may be attached to the headband, but the illuminating unit 1 may be configured integrally with the headband. Moreover, although the electrical cord from the illumination part 1 is connected to the control unit 10, it is good to make it connect via the cord reel which winds a cord.
- FIG. 5 shows the battery holding belt 8 that holds the battery power supply unit 3 so that the operator can attach the battery power supply unit 3 to a part of the body.
- a plurality of battery power supply units 3 are connected to each other by a cord reel, and the battery power supply unit 3 and the control unit 10 are also connected.
- the battery power supply unit 3 and the control unit 10 are annularly arranged on the battery holding belt 8.
- the battery holding belt 8 holds a plurality of battery power supply units 3 in a state of being embedded in the belt.
- the operator can wear the battery power supply unit 3 and the control unit 10 together with the illumination unit 1 during the treatment by winding the battery holding belt 8 around the waist, and the power supply disposed on the front surface of the control unit 10. Treatment can be performed while operating the on / switch 5A and the changeover switch 5B that adjusts the illumination intensity in three ways: high, medium, and low.
- the charger 6 can always be connected to the control unit 10.
- the control unit 4 performs both the control of the illumination unit 1 and the charging control to the battery power supply unit 3 at the same time, light is emitted from the illumination unit 1 while charging, so that it continues for a long time. It can also handle work that is too long.
- the battery power supply unit 3 is attached to the operator's body with the battery holding belt, so that a large battery or a large number of batteries can be carried even in a small size in the medical field. Therefore, it is possible to secure a large power supply capacity sufficient to obtain a sufficient illumination time for performing the above procedure.
- the LED emits light at a high output. By limiting the period, it is possible to secure a long illumination time necessary in the medical field even with a relatively small battery.
- the medical light source device emits light at a high output by supplying a current exceeding the rating to the LED by the operation of the operator when it is necessary to increase the amount of light. .
- the LED is prevented from being damaged by limiting the period for supplying the current exceeding the rating with a timer.
- the light source in this case is required to have a certain degree of durability without being damaged immediately even if the energization current exceeds the rated value.
- Other than the LED for example, there are a halogen lamp and a xenon lamp.
- an ordinary gas-filled incandescent bulb as a light source is not preferable because the filament breaks when the energizing current exceeds the rated value.
- Halogen lamps have tungsten filaments like incandescent bulbs, but even if the lamps become hot and sublimate tungsten, tungsten returns to the filaments by a chemical reaction called the halogen cycle, so it has durability from heat. is doing. In addition, a xenon lamp that does not have a filament has higher durability.
- the light source is different from an LED or an incandescent lamp.
- a discharge type light source such as a xenon lamp, a plasma light source lamp, or a halogen lamp
- the light source is temporarily turned off and then immediately restarted. Since the rise of illuminance is slow when the light is turned on, the temporary light emission stop (light-off) control is not performed by stopping the power supply to the light source but by turning off the light by providing a shutter (reference numeral 1A in FIG. 2) on the front surface of the light-emitting unit To do.
- the illuminance can be adjusted by adjusting the opening of the shutter 1A. Therefore, in this case, the control units 4, 54, and 84 in each embodiment of the present invention control the shutter 1 ⁇ / b> A for temporary extinction and illuminance adjustment.
- FIG. 8 is a block diagram showing a circuit configuration of the medical light source device according to the second embodiment.
- the illumination unit 61 includes an LED
- the control unit 54 includes the microprocessor unit MPU and the current control circuit 2
- the switch unit 55 includes a battery power source unit 60 formed by connecting a plurality of rechargeable batteries, and an AC adapter as a charger 56 that charges the battery power source unit 60.
- a processing procedure for controlling these peripheral devices is programmed in the microprocessor unit (hereinafter simply referred to as MPU) of the control unit 54.
- MPU microprocessor unit
- the switch unit 55 includes a first switch 55A for lighting the illumination unit 61, and second switches 55B and 55C for lighting the illumination unit 61 with an increased amount of light.
- the control unit 54 controls the current control circuit 62 so that the average current value flowing through the illumination unit 61 is increased from the rated value to an increased value larger than the rated value.
- two switches 55B and 55C are provided so that the increasing light amount can be selected in two ways, and the operator can select the increasing light amount appropriately large or small.
- control unit 54 checks the power supply capacity of the battery power supply unit 60. When the voltage drop is detected, the control unit 54 turns on the indicator 59 to give a warning, and when the charger 56 is connected to the control unit 54, the control unit 54 The unit 54 performs charging by controlling the current supply for charging the battery in the battery power supply unit 60 from the charger 6.
- FIG. 9 is a flowchart showing a processing procedure for controlling lighting of the illumination unit 1 by the MPU of the control unit 4.
- the MPU starts the processing procedure when the switch 55A is operated, and controls the current control circuit 62 to supply the rated current to the illumination unit 1 (step S1).
- the current control circuit 62 is controlled by the MPU so that the average current value flowing from the battery power supply unit 60 to the illumination unit 61 becomes the rated value.
- step S2 the MPU confirms whether or not the timer T2 flag is set in the register R (step S2). If not set, the process proceeds to step S4. If set, the timer value is added to the timer T2 of the register R. The timer is counted (step S3). Although the processing of step S2 and step S3 will be apparent later, the timer flag T2 is not set here, and the MPU performs the processing of step S4.
- step S4 a signal from the switch unit 55 is acquired and the operation of the switch 55A is confirmed. If the switch 55A is not operated for the second time from the start, the operation of the switch 55B or the switch 55C is confirmed (step S5). When the operation of any one of the switches 55B and 55C is confirmed, the MPU confirms whether or not the timer T2 timed by the register R provided therein has expired (step S6). In this case, the timing operation by the timer T2 is not performed, and the process proceeds to the next step S7.
- step S7 the MPU sets the increased light amount flag F0 in the register R. At this time, data for identifying the operated switch 55B or switch 55C is written in the increased light amount flag F0.
- the MPU controls the current control circuit 62 to increase the illumination light amount of the illumination unit 61 in accordance with the operated switch 55B or switch 55C based on the content of the increase light amount flag F0 (step S8).
- this light quantity increase control an average current value flowing through the illumination unit 61 is increased from a rated value to a current having an increased value larger than the rated value. Even if either of the switches 55B and 55C is operated, the current supplied to the illumination unit 61 becomes an increased value exceeding the rated value. However, the current that flows when the switch 55B is operated is operated by the switch 55C. Higher than the current that flows when
- the MPU supplies an increased current larger than the rated value to the illuminating unit 61.
- the flowing time is set to a predetermined period based on the temperature rise characteristic of the LED.
- the predetermined period is set so that the temperature of the LED within the predetermined period does not exceed the maximum allowable value based on the temperature rise time characteristic of the LED.
- the MPU adds the timer value to the timer T1 of the register R and measures the timer T1 (step S9). Then, as a result of the addition, it is determined whether the timer time has passed the predetermined period by determining whether the value of the timer T1 has reached a predetermined determination value (step S10). At this time, the predetermined period is set to be short so that a larger current flows when the switch 55B having a large increase light amount is operated, and the MPU responds to the content of the increase light amount flag F0 set in the register R.
- the timer T1 is programmed to change the judgment value.
- a timer time of 20 minutes is set as the predetermined period in order to increase the light amount by 40% compared to when the normal rated current is supplied, while the switch 55C is operated.
- the timer time of 30 minutes is set as the predetermined period in order to increase the light amount of the illuminating unit 61 by 30% as compared with the normal rated current supply.
- step S10 When it is determined in step S10 that it is within the timer time, the MPU confirms that the switch 55A is not operated (step S13), and if the switch 55A is not operated, the process proceeds to the next step S14. Then, it is confirmed whether the switch 55B or 55C is operated for switching the light amount.
- step S9 when there is no switch operation of light quantity switching, it returns to step S9 and repeats the operation
- step S14 if it is confirmed in step S14 that the switch 55B or 55C for switching the light amount is operated, the process proceeds to step S15.
- step S15 For example, in a state where the operator operates the switch 55C and performs the light amount increase control according to the switch 55C, if the operator instructs to increase the light amount further by operating the switch 55B, the MPU In S15, the increased light amount flag F0 is rewritten with data for identifying the switch 55B, and the timer time is changed accordingly.
- step S16 the current control circuit 2 is controlled to further increase the amount of light from the illumination unit 1 in accordance with the operation of the switch 55B, and the process of step S9 is performed.
- the operator operates the switch 55B and performs the light amount increase control according to the switch 55B, the operator operates the switch 55C to change the increased light amount.
- the change of the timer time in the process of step S15 is to correct the allowable time during which this current can flow when the current value supplied to the illumination unit 1 is switched based on the current timer value by the timer T1. It is. For example, when the switch 55B is operated, the timer time is set to 20 minutes, but if the switch 55C is operated within this timer time to change the amount of increase light, a small current that is equal to or greater than the rated current is set. In this case, the timer time is reset to a time longer than 20 minutes. On the other hand, when the switch 55B is operated from the state in which the switch 55C is operated, the timer time set to 30 minutes is reset to a time shorter than 30 minutes.
- the MPU corrects the timer time based on the current value exceeding the rated current that has been supplied and the supply time thereof (current timer value by the timer T1) and the current value to be supplied from now on. As a result, when the next processing of step S10 is performed, it is determined whether the value of the timer T1 has reached the corrected timer time.
- step S13 When the operation of the switch 55A is confirmed during such an increase in the amount of light (step S13), the current control circuit 62 is controlled to stop the supply of current to the illumination unit 61 and the illumination unit 1 is turned on (step S12). ). At the same time, all the contents of the register R are cleared and the initial state is entered.
- step S10 when the MPU confirms the end of the timer time T1 in step S10, the MPU sets the timer T2 flag F1 in the register R and clears the increased light amount flag F0 (step S11), and then proceeds to the processing in step S1 to illuminate.
- the supply current to the unit 61 is switched to the rated value, the control of the increased light quantity is finished, and the operation starts from step S2.
- the MPU does not increase the current even if the switch 55B or the switch 55C is operated in a certain period after the light amount of the illumination unit 1 is increased and the current of the rated value is supplied again to return to the normal light amount. To stop flowing. This fixed period is set to a time until the temperature of the LED falls below the rated allowable value after an increased current is passed through the illumination unit 1.
- step S2 when the processing of step S2 is performed in a state where the light amount of the illumination unit 61 is increased and the current of the rated value is supplied again to return to the normal light amount, the MPU stores the timer T2 in the register R in the processing of the previous step S11. Since the flag F1 is set, the timer T2 is counted by adding the timer value to the timer T2 of the register R in the next step S3.
- the MPU controls the light emission with the normal light amount while measuring the timer T2, unless instructed to stop driving the illumination unit 61 by operating the switch 55A in step S4.
- step S6 it is determined whether the value of the timer T2 has reached a predetermined determination value. Determine if the period has elapsed.
- the predetermined period at this time is the above-described time from when the increased current is passed through the illumination unit 61 until the temperature of the LED falls below the rated allowable value.
- step S7 the increased light amount flag F0 is set in the register R, and the increased light amount control is performed.
- step S2 the processing from step S2 is performed without performing the increase light amount control, and the timer T2 is measured while controlling the light emission with the normal light amount.
- the current of the rated value is supplied to the current control circuit 2 by operating the switch 55 ⁇ / b> A when the amount of light is increased by repeating the processing from step S ⁇ b> 9 to step S ⁇ b> 16.
- the switch 55A when the switch 55A is operated in a state where the increased light amount flag F0 is set, the MPU resets the increased light amount flag F0 and proceeds to step S1 to supply a current with a rated value to the illumination unit 1.
- the control circuit 2 is controlled.
- FIG. 10 is a block diagram showing an electric circuit having such a configuration.
- a temperature sensor 63 using a thermistor or the like is provided for the temperature of the LED of the illumination unit 61.
- the light source of the illuminating unit 61 is not limited to the LED, and may be a halogen lamp or xenon lamp having a certain degree of durability without being damaged immediately even when the energization current exceeds the rated value.
- a processing procedure for controlling lighting of the illumination unit 61 by the MPU in this case will be described with reference to the flowchart of FIG.
- the processing procedure is started, and the current control circuit 62 is controlled to supply the rated current to the illumination unit 61 (step S21).
- the current control circuit 62 is controlled by the MPU so that the average current value flowing from the battery power supply unit 60 to the illumination unit 61 becomes a rated value.
- the MPU acquires a signal from the switch unit 55 and confirms the operation of the switch 55A (step S22), and if not operated, confirms the operation of the switch 55B or the switch 55C (step S23). If the switch 55B or the switch 55C is not operated, the processing from step S22 is repeated. However, when the operation of the switch 55A is confirmed in step S22, the processing is step S33, and the MPU supplies the battery power supply unit 60 to the illumination unit 61. The light emission operation is stopped by controlling the current control circuit 62 so as to stop the current supply from.
- the MPU captures the output from the temperature sensor 54, and the detected temperature is a predetermined temperature (for example, 80 ° C. or a temperature lower than that which allows for a margin). ) (Step S24), if it is equal to or lower than the predetermined temperature, the switch 55B operated in the register R or the increased light amount flag F0 corresponding to the switch 55C is set (step S25).
- the increased light quantity flag F0 is data for identifying the operated switch 55B or switch 55C.
- the MPU performs light amount increase control according to the content of the increased light amount flag F0 (step S26), confirms whether or not the stop of the light emission is instructed by the operation of the switch 55A in the next step S27, and the switch If 55A is not operated, the process proceeds to step S28 to check whether the switch 55B or the switch 55C is operated. For example, when the operator operates the switch 55B, and the operator further operates the switch 55C while performing the light amount increase control corresponding to the switch 55B, the MPU switches the contents of the increased light amount flag F0 in step S29. In step S30, the current control circuit 2 is controlled to further increase the amount of light from the illuminating unit 1, and the process of step S31 is performed. Similarly, when the operator operates the switch 55C and performs the light amount increase control according to the switch 55C, the operator operates the switch 55B to change the increased light amount.
- step S28 when it is confirmed in step S28 that the switch 55B or the switch 55C is not operated, the process proceeds to step S31, and thus the current light emission state is continued without changing the increased light amount.
- step S31 the MPU detects the temperature by taking the output from the temperature sensor 15, and determines whether or not the detected temperature is lower than the predetermined temperature. If it is above the predetermined temperature, the operation from step S27 is repeated. Therefore, an increased current corresponding to the operation of the switch 55B or the switch 55C continues to flow to the illumination unit 1, and in any case, the LED emits light brighter than usual.
- step S27 when the MPU confirms the operation of the switch 55A in step S27, the process proceeds to step S33, where the current control circuit 2 is controlled to stop the supply of current to the illumination unit 1 and the illumination unit. The lighting of 1 is finished.
- step S31 When it is detected in step S31 that the temperature detected by the temperature sensor 15 has reached the predetermined temperature while the amount of light from the LED of the illumination unit 1 is being increased, the increased light amount flag F0 of the register R is detected. Is reset to step S21, and the MPU switches the current supplied to the illumination unit 1 to the rated value to end the light amount increase control, and the process from step S22 is performed.
- the MPU controls the current control circuit 2 to stop the supply of current to the illumination unit 1 (step S33).
- the control unit 4 resets the contents of the register R to be in an initial state.
- the MPU controls the current control circuit 2 to supply the rated current to the illumination unit 1, and the illumination unit 1 emits light with a normal light amount. Then, the MPU confirms in step S22 that there is no operation of the switch 55A, and confirms the operation of the switch 55B or 55C in the next step S23, and then the process of step S24 is performed. Therefore, the MPU captures the output from the temperature sensor 15 to detect the temperature (step S24), determines whether the detected temperature exceeds the predetermined temperature (step S25), and switches to the register R when the detected temperature is lower than the predetermined temperature.
- step S26 The increased light amount flag F0 corresponding to the operation of 55B or 55C is set in the register R (step S26), and the light amount increase control is repeated again. Therefore, while it is confirmed in step S25 that the LED temperature is lower than the predetermined temperature, the light quantity increase can be resumed even after the light quantity increase.
- the current of the rated value is supplied to the current control circuit 2 by operating the switch 55A when the light amount is increased by repeating the processing from step S27 to step S31.
- the switch 55A when the switch 55A is operated in a state where the increased light amount flag F0 is set, the MPU resets the increased light amount flag F0 and proceeds to step S21 to supply a current of a rated value to the illumination unit 1.
- the control circuit 2 is controlled.
- FIGS. 8 and 10 a specific circuit configuration of the current control circuit 62 in FIGS. 8 and 10 will be described, and control of the current supplied to the illumination unit 61 by the MPU in the control unit 54 will be described. Note that two configurations of the current control circuit 62 are illustrated in FIGS. 12 and 13, but any of the current control circuits 62 in FIGS. 12 and 13 may be used.
- the current control circuit 62 shown in FIG. 12 is formed by connecting a power supply Vcc to the LED 65 of the illumination unit 61, a driving transistor Q1 connected on the collector side thereof, and a resistance circuit 66 connected to the emitter side of the transistor Q1. . Then, the MPU connects the base of the transistor Q1 at the port a through the resistor R11 and controls the on / off thereof.
- the resistor circuit 66 includes a resistor R1 connected at one end to the emitter of the transistor Q1 and grounded at the other end, a series circuit of a transistor Q2 and a resistor R2 connected in parallel to the resistor R1, and also connected in parallel to the resistor R1. And a series circuit of a transistor Q3 and a resistor R3.
- the base of the transistor Q2 is connected to the port b of the MPU of the control unit 54 through the resistor R12, and the base of the transistor Q3 is connected to the port c of the control unit 4 through the resistor R13.
- the resistor R11, the resistor R12, and the resistor R13 are provided to limit the base current to each connected transistor.
- the resistance value of the resistor circuit 12 is determined by the combined resistance value of the resistors R1, R2, and R3.
- the current limiting resistance value is R1
- the transistor Q2 is turned on
- the transistor Q3 is turned off. Is R1 ⁇ R2 / (R1 + R2), and when both the transistor Q2 and the transistor Q3 are on, R1 ⁇ R2 ⁇ R3 / (R1 + R2 + R3).
- the resistance values of the resistors R1, R2, and R3 are set so that R1> R1 ⁇ R2 / (R1 + R2)> R1 ⁇ R2 ⁇ R3 / (R1 + R2 + R3).
- the resistance value is R1
- supply to the LED 65 The current is a rated value.
- the current limiting resistance value is R1 ⁇ R2 / (R1 + R2)
- the supply current increases
- the current limiting resistance value is R1 ⁇ R2 / R3 / (R1 + R2 + R3)
- the supply current further increases. I am doing so.
- the control unit 54 turns off both the transistor Q2 and the transistor Q3, the LED 65 is supplied with the rated current and has a normal light emission amount, but when the transistor Q2 is turned on, the increased current is supplied.
- the transistor Q2 and the transistor Q3 are both turned on, the supply current further increases and the amount of light emission increases.
- control for turning off the transistor Q2 and the transistor Q3 by the control unit 54 corresponds to the processing of “supplying the rated current to the LED” in the processing procedure described above, and the control for turning on the transistor Q2 is performed when the switch 5B is operated.
- the control for turning on both the transistor Q2 and the transistor Q3 corresponds to “light quantity increase control” when the switch 5C is operated.
- the MPU turns on the transistor Q1 and supplies the power supply Vcc to the current control circuit 2, a current flows through the LED 29.
- the control unit 54 turns off the transistors Q2 and Q3, the rated current flows through the LED 29 to perform normal light emission.
- the MPU controls the on / off of the transistor Q1 with a predetermined duty ratio so that a predetermined current flows. Therefore, although the voltage applied to the LED 29 has a rectangular wave shape, it is not limited to the rectangular wave, and it is preferable to make the rising and falling steps into a step shape. Thereby, a rapid change in illuminance can be eliminated.
- the MPU When the MPU turns on the transistor Q2 or turns on both the transistor Q2 and the transistor Q3 by operating the switch 55B or the switch 55C, a current corresponding to the current limiting resistance value of the resistor circuit 66 flows to the LED 65 to emit light. Accordingly, when the switch 55B or the switch 55C is operated during the illumination operation of the illumination unit 61 with the rated current, the MPU illuminates so that an amount of current exceeding the rated current flows to the LED 65 according to the increased light amount of the operated switch. The unit 61 is controlled. In this way, the control unit 54 switches the light emission amount of the LED 29 by controlling the transistors Q1, Q2, and Q3 from the ports a, b, and c of the MPU.
- the light emission operation of the illumination unit 61 is not limited to the circuit configuration described above, but the illumination device 1 is controlled by controlling the duty ratio according to the illumination intensity specified by a switch device on the circuit, such as a transistor or a MOSFET.
- a pulse driving method for controlling the flowing current may be used.
- FIG. 13 shows the configuration of the current control circuit 62 by the pulse drive method.
- a MOSFET is used for the switch device 71, and a PWM (PulseulWidth Modulation) signal from the pulse generator 72 is connected to the gate side of the switch device 71, and the port a ′ of the MPU of the control unit 4 is connected.
- PWM PulseulWidth Modulation
- An LED 74 of the illumination unit 61 and a protective resistor R4 are connected to the load side of the switch device 71 and grounded.
- a smoothing circuit including a coil, L, and a capacitor C is provided in the preceding stage to provide a pulse by switching operation. The output is averaged and output.
- a diode 75 is provided in front of the coil L to keep supplying current to the coil L even when the switch device 71 is turned off. Thereby, if the ON time (OFF time) of the switch device 71 is controlled, the electric current which flows into the illumination part 61 can be adjusted. Therefore, in this case, the control unit 54 can increase the light amount of the illumination unit 61 by performing control to change the duty ratio of the pulse generator 72.
- the voltage applied to the LED 74 has a rectangular wave shape, but is not limited to a rectangular wave, and may have a substantially half-wave shape by making its rise and fall stepwise.
- the MPU performs control to change the duty ratio so that the average current value flowing through the illumination unit 61 flows from the rated value to an increased current larger than the rated value. Even if either of the switches 55B and 55C is operated, the current supplied to the illumination unit 61 becomes an increased value exceeding the rated value. However, the current that flows when the switch 55B is operated is operated by the switch 55C. Higher than the current that flows when The control in which the MPU outputs a control signal from the port a ′ to the pulse generator 32 corresponds to the processing of “supplying the rated current to the LED” in the processing procedure and “light quantity increase control” when the switch 5B or the switch 5C is operated. To do.
- the control signal output from the port a ′ by the MPU indicates the duty ratio for supplying the rated current to the illumination unit 61.
- the MPU outputs a control signal for changing the duty ratio so as to supply an increased current according to the increased light amount of the operated switch.
- the above-described medical light source device is a light source device using an LED that can be mounted on the operator's body, in a range in which the LED is not deteriorated due to the influence of heat generation, only when the amount of light needs to be particularly increased.
- a current that is not more than the maximum value and exceeds the rated value (continuous rated value) over a predetermined period, the amount of light can be increased without using a complicated configuration. Therefore, the power consumption is not consumed more than necessary, and a long illumination time necessary for use in the operation at the medical site can be secured.
- LED lighting devices used in home lighting applications, etc. dimm the light emission amount of the LED in multiple stages, all of which emit light continuously with the adjusted light emission amount. It is necessary to take appropriate heat dissipation measures in preparation for sudden stoppage or deterioration due to heat due to the assumption that heat is correspondingly generated when adjusted to the light emission state of the output.
- heat dissipation measure leads to an increase in the size of the medical light source device that is supposed to be downsized so that it can be mounted on the operator's body.
- the illumination unit 61 is mounted on the operator's body with a holder, and is held on the operator's head while being held with a binocular loupe, for example. Further, the battery power supply unit 60 may be mounted on a part of the operator's body as in the first embodiment. In this case, if the battery holding belt 8 shown in FIG. 5 is worn on the operator's waist, the control unit 54 including the MPU and the current control circuit 62 and the switch unit 55 are controlled together with the battery power source unit 60.
- the unit 10 is integrated and attached to the battery holding belt 8, and the control unit 10 is configured to supply a drive current to the illumination unit 61 through the cord 42 to control the illumination operation.
- the control unit 10 controls the charging of the battery power supply unit 3 when the charger 6 with the plug inserted into the outlet 41 is connected. However, the control unit 10 performs the illumination operation by the lighting unit 1 while charging the battery power supply unit 3. It can be carried out.
- the movement of the operator is detected by the acceleration sensor, and the light emission amount is controlled according to the movement.
- the time required to irradiate a local area with a larger amount of light for example, by performing resection or suturing of a blood vessel or a minute portion, is about 20% of the total. Therefore, power consumption of the battery power supply can be suppressed by controlling the illuminating unit 1 to be dark except for about 20% of the time.
- FIG. 14 is a block diagram showing the configuration of this electric circuit. Illumination intensity of the illumination unit 81, illumination drive unit 82, battery power supply unit 83, control unit 84, power on / off switch 85A and illumination unit 81.
- the switch unit 85 includes three types of changeover switches 85B for adjusting the battery power to high, medium, and low, an AC adapter as a charger 86 that charges the battery power supply unit 83, and an acceleration sensor 80.
- the acceleration sensor 80 can be used in various types, such as a mechanical type, an optical type, and a semiconductor type.
- a semiconductor type is optimal as a medical light source device in terms of miniaturization. This is especially true when the holder is a binocular loupe, hat or headband that can be worn on the operator's head.
- FIG. 15 shows an example in which the acceleration sensor 80 is mounted on a binocular loupe 87 as the holder 7.
- the acceleration sensor 80 detects vibration caused by the movement of the operator's head and converts it into an electrical signal.
- the control unit 84 To the control unit 84.
- the acceleration sensor 80 is attached to the binocular loupe 87 with an adhesive tape or the like.
- the control unit 84 controls the light emission operation of the illumination unit 81 through the illumination drive unit 82 when the power on signal is input from the switch unit 85 by turning on the power on / off switch 85A. Then, when an illumination intensity selection signal is input from the switch unit 85 by operating the changeover switch 85B, the control unit 84 causes the illumination unit 81 to energize the illumination unit 81 with a constant current according to the designated light intensity at this time. 82 is controlled.
- the control unit 84 controls the illumination driving unit 82 so as to reduce the illuminance of the illumination unit 81 when the acceleration sensor 80 detects an acceleration equal to or higher than a predetermined value while the energization control is performed on the illumination unit 81.
- the control unit 84 controls the illumination driving unit 82 to emit light with the light intensity specified by the changeover switch 85B.
- the operator uses the holder 81 together with the illumination unit 81 to fix the illumination unit 81 and concentrate the light on the operation target site.
- the acceleration detected by the held acceleration sensor 80 is small, and the control unit 84 emits light with the intensity required by the operator.
- the operator makes a large movement that moves the entire body during preparation work, etc., so the head vibrates and is detected by the acceleration sensor 80. The acceleration that is performed is increased.
- the control unit 84 controls the illumination driving unit 82 so as to decrease the illuminance of the illumination unit 81, so that the battery power supply unit 83 can be effectively used.
- the acceleration detected by the acceleration sensor 80 is equal to or greater than a predetermined value, the illumination of the illumination unit 81 may be stopped.
- the battery power supply unit 83 may be mounted on a part of the operator's body as in the first embodiment. In this case, if the battery holding belt 8 shown in FIG. 5 is attached to the operator's waist, the control unit 84 and the switch unit 85 are integrated with the control unit 10 together with the battery power supply unit 83, and the battery holding belt. Attach to 8.
- the control of the illuminance of the illumination unit 81 using such an acceleration sensor can be applied to any of the configurations of FIG. 8 or FIG. 10 of the second embodiment described above.
- FIG. 8 or FIG. 10 when the second switches 55B and 55C are operated and the average current value flowing through the illuminating unit 61 is increased by a current larger than the rated value, and high-output light emission control is started.
- the MPU periodically monitors the acceleration detection signal from the acceleration sensor by a timer interrupt, and performs control to reduce the average current value flowing through the illumination unit 61 to the rated value when the acceleration exceeds a predetermined value.
- the present invention (1) secures a large-capacity battery power source by attaching a battery to the body (first embodiment), and (2) a light source such as an LED by operating a switch. (3) It is judged that there is no need to irradiate high intensity light from the movement of the operator even during the operation period, provided with an acceleration sensor. In this period, the illuminance is decreased (third embodiment), thereby providing a medical light source device that enables long-time illumination.
- the three methods according to the above (1) to (3) can prolong the illumination time even if each of them is adopted alone, but by adopting an appropriate combination as described, it is possible to further illuminate for a longer time. I can plan.
- the medical light source device can be used while being connected to an AC commercial power source.
- the light source of the illuminating unit is an LED
- the LED is driven by a 12V DC power source obtained by converting the commercial power source AC100V into a direct current.
- the rectifier circuit 101 is connected, and the generated full-wave rectification is smoothed by the smoothing circuit 102 and converted into a direct current so as to be supplied to the LED drive circuit 103.
- the battery power supply B is connected to the smoothing circuit 102 through a diode D for preventing backflow. Therefore, the power supply to the LED drive circuit 103 is automatically switched from the battery power supply B to the power failure or when the AC power cord is disconnected and the power supply is stopped. The LED is continuously illuminated.
- the above-described switch operation causes the light source to emit light at a high output for a certain period of time, and the intensity from the movement of the operator even during the operation period using an acceleration sensor.
- a medical light source device capable of coping with a long power failure even when the power supply is switched to the battery power supply B is provided.
- FIG. 17 shows a configuration of an illumination unit 91 incorporating a small fan.
- the illumination unit 91 houses an LED unit 93 in a cylindrical housing 92.
- the LED unit 93 has a substrate 94 on which LEDs are mounted, and is fixed in the housing 92 by attaching the substrate 94 to the housing 92 on the inner wall.
- the light emitted from the light source is projected to the outside through the lens 94 that forms the cap portion of the housing 92.
- a recess 95 is formed on a part of the side surface of the housing 92 so that, for example, the small fan 96 having the above-described dimensions can be accommodated.
- This small fan 96 is an axial flow type fan, and air flows between the suction port 97 provided on the bottom surface of the recess 95 and the exhaust port 98 provided on the side surface of the housing 92 so as to face the suction port 97.
- the LED unit 93 is formed and cooled.
- the small fan 96 is supplied with power from the battery power supply unit for supplying power to the illumination unit 91 via the lead wire 99.
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Abstract
Description
3、60、83 バッテリー電源部
4、54、84 制御部
6、56、86 充電器
7 保持具
8 バッテリー保持ベルト
10 コントロールユニット
55A 第1のスイッチ
55B 第2のスイッチ
63 温度センサ
80 加速度センサ
92 照光部の筺体
96 ファン
Claims (27)
- 操作者の身体に装着されて医療施術の対象部に光を照射する医療用光源装置であって、
光源を備えた照光部と、
前記照光部を前記操作者の身体に装着する保持具と、
前記照光部に対して電源を供給するための電源部と、
前記操作者の動きを検知する加速度センサと、
前記照光部への通電を制御する制御部と、を備え、
前記制御部は、前記加速度センサが所定値以上の加速度を検出した時に、前記照光部の照度の低下又は前記照光部への通電停止を制御することを特徴とする医療用光源装置。 - 前記加速度センサは、前記照光部と共に前記保持具に取り付けられることを特徴とする請求項1に記載の医療用光源装置。
- 操作者の身体に装着されて医療施術の対象部に光を照射する医療用光源装置であって、
光源を備えた照光部と、
前記照光部を前記操作者の身体に装着する保持具と、
前記照光部に対して電源を供給するためのバッテリー電源部と、
商用電源に接続され、前記バッテリー電源部を充電するためのACアダプタを有する充電器と、
前記バッテリー電源部及び前記充電器を操作者の身体に装着するためのバッテリー保持ベルトと、を有し、
前記バッテリー保持ベルトは、前記バッテリー電源部の端子と電気接続する手段と、前記ACアダプタを前記バッテリー電源部に電気接続する手段と、を備えたことを特徴とする医療用光源装置。 - 前記照光部のオン/オフ及び照光強度を調節するスイッチ部と、
前記操作者の動きを検知する加速度センサと、
当該加速度センサにより操作者の動きを検知することにより、前記照光部の照度の低下又は前記照光部への通電停止を制御する制御部と、
を、さらに備えたことを特徴とする請求項3に記載の医療用光源装置。 - 前記バッテリー電源部は、前記商用電源が停電又は前記ACアダプタへの接続が遮断された時に、前記照光部への電源供給を一瞬の供給遮断を生じさせることなく継続することを特徴とする請求項4に記載の医療用光源装置。
- 前記保持具は、操作者の頭部に装着する双眼ルーペであることを特徴とする請求項4に記載の医療用光源装置。
- 前記保持具は、操作者の頭部に被る帽子又はヘッドバンドであることを特徴とする請求項4に記載の医療用光源装置。
- 前記照光部は、前記保持具に着脱自在に取り付け可能にする装着手段を備えることを特徴とする請求項4に記載の医療用光源装置。
- 前記バッテリー保持ベルトは、操作者の腰に巻回するベルトであることを特徴とする請求項4に記載の医療用光源装置。
- 前記バッテリー電源部は複数のバッテリーから構成されて、前記バッテリー保持ベルトは、前記バッテリーが前記ベルト内に埋め込まれた状態で保持することを特徴とする請求項4に記載の医療用光源装置。
- 前記制御部は、前記照光部のオン/オフと共に照光強度の指定に応じたデューティー比によるパルス駆動にて前記照光部の点灯を制御することを特徴とする請求項10に記載の医療用光源装置。
- 前記制御部は、前記充電器が接続された状態で、前記照光部の制御と前記バッテリー電源部への充電制御の両制御を行うことを特徴とする請求項10に記載の医療用光源装置。
- 前記スイッチ部及び前記制御部を一体にしてコントロールユニットを形成し、前記コントロールユニットを前記バッテリー保持ベルトで保持するようにしたことを特徴とする請求項10に記載の医療用光源装置。
- 前記照光部を冷却するためのファンを前記保持具に取り付けたことを特徴とする請求項3に記載の医療用光源装置。
- 前記ファンを、前記光源を冷却するよう前記照光部の筺体内に内蔵させたことを特徴とする請求項14に記載の医療用光源装置。
- 操作者の身体に装着されて医療施術の対象部に光を照射する医療用光源装置であって、
通電電流が定格値を上回っても耐久性を有する光源を備えた照光部と、
前記照光部を前記操作者の身体に装着する保持具と、
前記照光部に対して電源を供給するための電源部と、
前記電源部から前記照光部に流れる平均電流値を定格値から当該定格値よりも大きい増大値にする電流制御回路を備える制御部と、
前記照光部を点灯させるための第1のスイッチと、
前記照光部を増大光量で点灯させるための第2のスイッチと、を有し、
前記制御部は、前記第2のスイッチのオン操作に応答して、所定期間だけ前記照光部に前記増大値の電流を流すことを特徴とする医療用光源装置。 - 前記操作者の動きを検知する加速度センサを、さらに備え、
前記制御部は、当該加速度センサにより操作者の動きを検知することにより、前記照光部の照度の低下又は前記照光部への通電停止を制御することを特徴とする請求項16に記載の医療用光源装置。 - 前記所定期間は、前記増大値の電流が流れることによる前記光源の温度上昇時間特性に基づいて設定されることを特徴とする請求項17に記載の医療用光源装置。
- 前記所定期間は、前記光源の温度上昇時間特性に基づいて当該光源の当該所定期間内の温度が最大許容値を超えないように設定されることを特徴とする請求項18に記載の医療用光源装置。
- 前記定格値よりも大きい増大値は複数段階に設定され、前記第2のスイッチの操作により選択することを特徴とする請求項17に記載の医療用光源装置。
- 前記制御部は、前記照光部に前記増大値の電流を流した後に、前記光源の温度が定格許容値以下に低下するまでの期間は、前記第2のスイッチのオン操作が行われても前記照光部に前記増大値の電流を流すことを停止することを特徴とする請求項17に記載の医療用光源装置。
- 前記電源部を前記操作者の身体に装着するための保持ベルトを備え、
前記第1のスイッチ及び第2のスイッチと前記制御部を一体にしてコントロールユニットを形成し、前記コントロールユニットを前記保持ベルトにて保持するようにしたことを特徴とする請求項17に記載の医療用光源装置。 - 操作者の身体に装着されて医療施術の対象部に光を照射する医療用光源装置であって、
通電電流が定格値を上回っても耐久性を有する光源を備えた照光部と、
前記照光部を前記操作者の身体に装着する保持具と、
前記照光部に対して電源を供給するための電源部と、
前記電源部から前記照光部に流れる平均電流値を定格値から当該定格値よりも大きい増大値にする電流制御回路を備える制御部と、
前記照光部を点灯させるための第1のスイッチと、
前記照光部を増大光量で点灯させるための少なくとも一つの第2のスイッチと、
前記光源の温度を検知する温度センサと、を有し、
前記制御部は、前記第2のスイッチのオン/オフ操作に応答して、前記光源の温度が予め設定された最大許容値を超えない範囲で、前記照光部に前記増大値の電流を流すことを特徴とする医療用光源装置。 - 前記操作者の動きを検知する加速度センサを、さらに備え、
前記制御部は、当該加速度センサにより操作者の動きを検知することにより、前記照光部の照度の低下又は前記照光部への通電停止を制御することを特徴とする請求項23に記載の医療用光源装置。 - 前記定格値よりも大きい増大値は複数段階に設定され、前記第2のスイッチの操作により選択することを特徴とする請求項24に記載の医療用光源装置。
- 前記制御部は、前記光源の温度が予め設定された最大許容値から所定値以上低下しない場合は、前記第2のスイッチのオン操作が行われても、前記照光部に前記増大値の電流を流すのを停止することを特徴とする請求項24に記載の医療用光源装置。
- 前記電源部を前記操作者の身体に装着するための保持ベルトを備え、
前記第1のスイッチ及び第2のスイッチと前記制御部とを一体にしてコントロールユニットを形成し、前記コントロールユニットを前記保持ベルトにて保持するようにしたことを特徴とする請求項24に記載の医療用光源装置。
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CA2817829A1 (en) | 2012-07-19 |
CN103238020A (zh) | 2013-08-07 |
JPWO2012096077A1 (ja) | 2014-06-09 |
RU2013133358A (ru) | 2015-02-20 |
KR101347899B1 (ko) | 2014-01-06 |
JP4841013B1 (ja) | 2011-12-21 |
US9215782B2 (en) | 2015-12-15 |
EP2626617A1 (en) | 2013-08-14 |
JP2012146555A (ja) | 2012-08-02 |
BR112013013133A2 (pt) | 2016-08-23 |
KR20130052667A (ko) | 2013-05-22 |
JP5529978B2 (ja) | 2014-06-25 |
MX2013005829A (es) | 2013-07-12 |
CN103238020B (zh) | 2016-08-10 |
AU2011354931A1 (en) | 2013-05-30 |
US20130229111A1 (en) | 2013-09-05 |
EP2626617A4 (en) | 2014-01-01 |
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