JPH0728511U - Medical light illuminator - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a medical light irradiator capable of easily and accurately knowing whether or not the expected performance of medical light irradiation is sufficiently maintained in a medical field. [Structure] Main body 41 having light source unit 5 built-in, and main body 4 thereof
1, a light guide 7 that guides the light from a light source unit attached to the tip of the light source 1 to the outside, and a handle 42 that is connected to the main body 41.
In a medical light irradiator having a light irradiation handpiece 4 composed of and a power supply device 1 for supplying power to the light irradiation handpiece, the power supply device 1 measures the amount of light irradiated from the tip of a light guide. The built-in light quantity measuring device 8 is provided, and the display unit 14 for displaying the measurement result is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a medical light irradiator for polymerizing and curing a photopolymerizable material used in dentistry.

[0002]

[Problems to be solved by conventional techniques and devices]

 In dentistry, in recent years, for example, instead of filling amalgam into the perforations formed in the treatment of caries, filling a transparent photopolymerizable material from the viewpoint of its aesthetics and polymerizing and curing the photopolymerizable material. Is being done. That is, the perforations formed for the treatment of caries etc. are filled with a photopolymerizable material, and the photopolymerizable material is irradiated with light for a predetermined time by a light irradiator, and the photopolymerized material is polymerized and cured by the light irradiation. Is being carried out.

However, in the above medical light irradiator, light having a wavelength of 400 to 500 nm, which is the final output of the light irradiator, is caused by deterioration of the lamp, stain or deterioration of the light guide, failure of the power supply unit, or the like. May not be output above the specified value. Further, particularly in the case of a light irradiator using a rechargeable battery, the material may not be able to be sufficiently polymerized and cured due to the use of the rechargeable battery.

However, in general, there is no means for accurately checking whether or not light of a predetermined wavelength is output at a specified value or more as described above in the medical field, and it is not possible for the manufacturer to check whether the device is normal or not. There is a problem in that you have to ask for calibration or measure the light intensity with an expensive optical power meter. In addition, although there are simple photometers for light irradiation in the market, they generally have unclear specifications and are not versatile, so there are variations in performance among manufacturers due to the performance of filters, lamps, light guides, etc. For some medical light irradiators, it is almost impossible to fully check their performance, and there are problems such as unreliable measurement.

In view of the above, the present invention provides a medical light irradiator capable of easily and accurately knowing whether or not the expected performance of the medical light irradiator is maintained in a medical field. The purpose is to get.

[0006]

[Means for Solving the Problems]

 The present invention provides a light emitting handpiece including a main body having a built-in light source, a light guide attached to the tip of the main body to guide light from the light source to the outside, and a handle connected to the main body. In a medical light irradiator having a power supply device for supplying power to the light irradiation handpiece, the power supply device has a built-in light amount measurement device for measuring the amount of light emitted from the light guide tip, and It is characterized by providing a display unit for digitally displaying the measurement results stepwise.

[0007]

[Action]

 When measuring the amount of light emitted from the light guide, the light amount is detected by the light amount measuring device when the tip of the light guide is made to face the light amount measuring device built into the power supply device and the light amount measuring device is irradiated with light. Then, the measurement result is displayed on the display unit, and it is possible to check whether or not the amount of light sufficient to guarantee the curing depth of the photopolymerizable material required for the medical light irradiator is applied.

[0008]

【Example】

 Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an external view of a medical light irradiator of the present invention, and FIG. 2 is a vertical side view showing a schematic configuration of a power supply device thereof. In the power supply device 1, as shown in FIG. Such a power supply unit 2 is built in. A conductive wire 3 connected to the power supply unit 2 is led out of the power supply device 1, and a light irradiation handpiece 4 is attached to the tip of the conductive wire 3 led out of the power supply device 1.

In the main body 41 of the light irradiation handpiece 4, a light source unit 5 having a reflecting mirror for reflecting light from a light source such as a halogen lamp connected to the tip of the conductive wire 3 in the forward direction is built in. In front of the light source unit 5, a filter 6 that allows only light having a wavelength of 400 to 500 nm to pass therethrough is disposed. At the tip of the main body 41, a light guide 7 is attached, which has a light input end substantially at the focal position of the reflecting mirror of the light source unit 5 and guides the light from the light source unit 5 to the outside. A handle 42 is connected to the other end of the main body 41 so that the light emitting handpiece 4 can be held in the hand.

After the photopolymerization material is filled into the hole formed when treating caries, etc., the tip of the light guide 7 is held near the filled photopolymerization material while holding the light irradiation handpiece 4. Then, the irradiation switch 43 is pressed to irradiate the photopolymerizable material with light from the light source unit 5 through the light guide 7 for a predetermined time, for example, 40 seconds, whereby the photopolymerizable material can be polymerized and cured.

By the way, a light quantity measuring device 8 for measuring whether or not the output light emitted from the light guide 7 is equal to or more than a specified value is provided in the upper portion of the power supply device 1.

That is, as shown in FIGS. 2 and 3, a concave portion 9 is formed in the slope portion on the front side of the upper surface of the power supply device 1, and the concave portion 9 has the above-mentioned central portion in the bottom wall. A step portion 10 having a diameter smaller than that of the light guide 7 is formed, and a light sensitive element 11 such as a solar cell is mounted in the step portion 10, and the light sensitive element 11 has a front surface side (recess 9 side). A photometer filter 12 is provided which allows only light having a wavelength of 400 to 500 nm to pass therethrough. A cylindrical adapter 90 having a bottom, which has an inner diameter capable of inserting and engaging the tip of the light guide 7 and has an opening 91 at the center of the bottom, is attached to the recess 9.

Further, in the power supply device 1, an amplifier 13 for amplifying a signal converted into an electric signal corresponding to the light amount by the light sensitive element 11 is built in, and the surface of the power supply device 1 is further provided. The section is provided with a display section 14 for digitally step-displaying the output signal from the amplifier 13.

For example, as shown in FIG. 1, the hardness of the photopolymerizable material required for the medical light irradiator, the lower limit of the light amount that guarantees the curing depth, and the threshold value 15 are shown. It is displayed in the non-usable area 16 and in the available area 17 when the light amount is equal to or more than the threshold value.

When the light amount of the light irradiator is checked, the light guide 7 is inserted into the adapter 90 for checking the light amount and is in close contact with the bottom wall surface of the light guide 7. When the light is emitted, the light emitted from the vicinity of the central portion of the light guide 7 enters the photosensitive element 11 through the filter 12, is converted into an electric signal corresponding to the incident light quantity, and is amplified by the amplifier 13. , The output signal from the amplifier 13 is displayed on the display unit 14. That is, when the output signal is equal to or more than the value that guarantees the curing depth of the photopolymerization material as described above, it is displayed in the usable range 17 and when it is less than the guaranteed value, the unusable region is displayed. It is displayed on 16 and it is possible to easily check whether or not the light amount is sufficient. Moreover, since the outer peripheral portion of the tip of the light guide 7 is shielded by the light amount checking adapter 90, it is not affected by external light and has high reliability.

FIG. 4 is a block diagram of a method of displaying with a digital level meter.

Although a solar cell is used as the light-sensitive element in the above embodiment, a photodiode may be used as the light-sensitive element. 5 and 6 are block diagrams of the method using the photodiode. In each of the above embodiments, an amplifier is provided, but the amplifier may be omitted in some cases.

Further, FIG. 7 shows a circuit diagram of the system shown in FIG. 4, in which an electric signal corresponding to the amount of light received by the photosensitive element 11 composed of a solar cell is amplified by the amplifier 13 and respectively by the comparator 18. The set value is compared and the result is displayed on the LED level meter 19.

By the way, although the light irradiation handpiece 4 is connected to the power supply device 1 through the conductive wire 3 in the above embodiment, the light irradiation handpiece 4 may be a wireless type. That is, FIG. 8 is a perspective view showing an example of a wireless light irradiator, and the light irradiating handpiece 4 is detachable from the power supply device 1. As shown in FIG. 8 and FIG. 9, the power supply device 1 is provided with a handle holding concave portion 21 to which a handle 42 portion of the light irradiation handpiece 4 can be attached / detached and a spare charging pond 22a on / off. A possible rechargeable battery holding recess 23 is formed, and the bottoms of the handle holding recess 21 and the rechargeable battery holding recess 23 are respectively connected to the charger 20 installed in the power supply device 1. Connected terminals 24a, 24b are provided.

Further, slits 25a and 25b communicating with the handle holding concave portion 21 and the rechargeable battery holding concave portion 23 are formed on the left and right portions of the power supply device 1 through the slits 25a and 25b. The terminals 24a and 24b can be cleaned respectively.

Further, on the slope 1a on the front side of the upper surface of the power supply device, a display unit 14 for digitally step-displaying the output signals from the light amount measuring device 8 and the amplifier 13 provided in the power supply device. In addition, indicators 26a and 26b for indicating the states of charging completion, charging, etc. are provided corresponding to the rechargeable battery holding recess 21 and the rechargeable battery holding recess 23, respectively.

On the other hand, as shown in FIG. 11, the light irradiation handpiece 4 is composed of a main body 41 having a light source unit and the like built therein, a light guide 7 for guiding the light from the light source unit to the outside, and a handle 42. ing. The handle 42 is in the shape of a hollow container, and the rechargeable battery 22 is detachably mounted in the handle 42 through its end face opening. The electrode 27a of the rechargeable battery 22 is provided on the main body 41 side. Is connected to the terminal 28. Further, on the top of the main body 41 or the handle 42, there is provided a remaining amount display section 29 for digitally displaying the remaining number of uses of the charge amount of the rechargeable battery in a stepwise manner.

Then, when the handle 42 of the light irradiation handpiece 4 is inserted into the handle holding recess 21, the electrode 27b of the rechargeable battery 22 mounted in the handle 42 comes into contact with the terminal 24a, and the rechargeable battery 22's Charging is performed. Similarly, by mounting the spare rechargeable battery 22a in the rechargeable battery holding recess 23, the rechargeable battery 22a can be charged.

Therefore, when the photopolymerizable material is polymerized and cured during the treatment of dental caries, etc., the handle 42 of the light irradiation handpiece 4 is pulled out from the handle holding recess 21, so that the light irradiation handpiece 4 can be appropriately used. It can be brought to a position and the patient can be treated. Further, when checking the light quantity of the light irradiator, the tip of the light guide 7 is inserted into the light quantity check adapter 90 as in the first embodiment, and the light is irradiated in a state in which it is in close contact with the bottom wall surface thereof. The light amount is displayed via the sensitive element 11, the amplifier 13, etc., and the light amount can be checked.

FIG. 12 is a view showing another embodiment of the light quantity measuring device 8 part, in which the slope portion 1a on the front side of the upper surface of the power supply device 1 is made of a light transmitting material at the measurement port of the light quantity measuring device. The adapter 31 is detachably screwed. The adapter 31 is made of plastic that is autoclave sterilizable and has heat resistance, for example, silicon resin, and is provided with a large-diameter recess 32 into which a large-sized light guide can be inserted. 33 are arranged concentrically and have a stepped shape so that light guides having different diameters can be received at the center of the measurement port.

FIG. 13 is a diagram showing another embodiment of the adapter 31 described above. A mortar-shaped slope 32a is formed on the bottom surface of the recess 32 of the adapter 31 and is slightly inclined toward the axis of the measurement port. Has been done. Therefore, also in this case, even when using light guides having different diameters, the light guides can be aligned with the axis of the measurement port.

FIG. 14 is a diagram showing an embodiment of a state-of-charge display circuit for a rechargeable battery. When a fully charged rechargeable battery is mounted on a light irradiation handpiece, the number of times of irradiation is limited to the state-of-charge-preset circuit. Is set, the number of actuations of the irradiation switch is subtracted by the subtraction circuit, and the remaining number of possible irradiations is displayed by the remaining capacity display circuit.

FIG. 15 is also a diagram showing another embodiment of the state-of-charge display circuit. The changeover switch S is turned on to the charger side when put in the charger, and is added side when put in the load side. When turned on, the charge / discharge current detection circuit detects the charge amount or discharge amount, the sum or difference of the charge amount before charge / discharge is calculated by the calculation circuit, and the sum or difference remains by the remaining capacity display circuit. It is displayed as the charge amount.

[0029]

[Effect of device]

 As described above, the present invention has a built-in light amount measuring device capable of measuring the amount of light emitted from the light guide in the power supply device, and a display unit for displaying the measurement result detected by the light amount measuring device. Since the light quantity is provided, it is possible to easily check the light quantity at the medical site according to the necessity, and moreover, since the light quantity measuring device is dedicated, it is possible to make an accurate check. Moreover, when the wireless type is used, there is no need to install a power supply device in the immediate vicinity of the medical site, the range of use is wide and it is easy to use, and if the adapter in the light quantity measurement device has a specific shape. In addition, even when using multiple types of light guides with different diameters, the light guides can be aligned with the axis of the measurement port, and an accurate light quantity check can be performed.

[Brief description of drawings]

FIG. 1 is an external view showing an embodiment of a medical light irradiator of the present invention.

FIG. 2 is a vertical sectional side view of a power supply device for a medical light irradiator according to the present invention.

FIG. 3 is an enlarged cross-sectional view of a light quantity measurement device section.

FIG. 4 is a block diagram of a combination system of a solar cell and a digital level meter.

FIG. 5 is a block diagram of a combination system of a photodiode and an analog meter.

FIG. 6 is a block diagram of a combination system of a photodiode and a digital level meter.

7 is a circuit diagram of the system shown in FIG.

FIG. 8 is a perspective view showing another embodiment of the medical light irradiator of the present invention.

FIG. 9 is a plan view of the power supply device.

10 is a sectional view taken along the line AA of FIG.

FIG. 11 is a side view showing an example of a light irradiation handpiece.

FIG. 12 is a cross-sectional view showing another embodiment of the light quantity measuring device section.

FIG. 13 is a sectional view showing still another embodiment of the light quantity measuring device section.

FIG. 14 is a diagram showing an embodiment of a charge amount remaining capacity display circuit.

FIG. 15 is a diagram showing another embodiment of the remaining capacity display circuit.

[Explanation of symbols]

 1 Power Supply Device 2 Power Supply Part 3 Conductive Wire 4 Light Irradiation Handpiece 41 Main Body 42 Handle 43 Irradiation Switch 5 Light Source Part 7 Light Guide 8 Light Quantity Measuring Device 9 Recess 10 Step Section 11 Photosensitive Element 12 Photometer Filter 14 Display Part 20 Charging Container 21 Recessed battery holding recess 22 Rechargeable battery 23 Spare rechargeable battery holding recess 24a, 24b Terminals 26a, 26b Indicator 31 Adapter 32, 33 Recessed portion 32a Mortar-shaped slope

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[Procedure amendment]

[Submission date] October 7, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

[Figure 3]

[Figure 4]

[Figure 5]

[Figure 6]

[Figure 7]

[Figure 8]

[Figure 9]

[Figure 10]

[Fig. 12]

FIG. 11

[Fig. 13]

FIG. 14

FIG. 15

Claims (9)

[Scope of utility model registration request] 1. A light irradiation handpiece comprising a main body having a built-in light source, a light guide attached to the tip of the main body to guide light from the light source to the outside, and a handle connected to the main body. In a medical light irradiator having a power supply device for supplying power to the light irradiation handpiece, the power supply device has a built-in light amount measurement device for measuring the amount of light emitted from the tip of the light guide. ,
A medical light irradiator, which is provided with a display section for digitally displaying the measurement results stepwise. 2. The medical light irradiator according to claim 1, wherein the display unit is provided on a slope on the front side of the upper surface of the power supply device. 3. The light irradiator for medical use according to claim 1, wherein an adapter for receiving the tip of the light guide at a measurement port of the light quantity measuring device is detachably provided on the power measuring device. 4. The front surface of the adapter is a sloping slope or a step which is slightly inclined toward the axis of the measurement port so that the adapter can receive various light guides having different diameters at the axis of the measurement port. The medical light irradiator according to claim 3, which has a concentric concave surface. 5. The medical light irradiator according to claim 3 or 4, wherein the adapter is made of autoclave sterilizable plastic that is transparent or heat resistant. 6. The medical light irradiator according to claim 1, wherein the light quantity measuring device is a light sensitive element provided with a filter for selectively passing light on a front surface thereof. 7. A rechargeable battery for supplying electric power to the power source unit for a predetermined time is detachably housed in the handle in the handle, and the power supply device is charged by inserting the rechargeable battery. The medical light irradiator according to claim 1, wherein a device is built in and the light irradiating handpiece is cordless to the power supply device. 8. The medical light irradiator according to claim 7, wherein a main body or a handle of the light irradiation handpiece is provided with a remaining amount display section for displaying a remaining amount of the charged amount of the rechargeable battery. . 9. The medical light irradiator according to claim 8, wherein the remaining amount display unit is a display unit for digitally displaying the remaining number of times of use.