WO2019044447A1 - Lunettes de protection pour traitement médical - Google Patents

Lunettes de protection pour traitement médical Download PDF

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Publication number
WO2019044447A1
WO2019044447A1 PCT/JP2018/029921 JP2018029921W WO2019044447A1 WO 2019044447 A1 WO2019044447 A1 WO 2019044447A1 JP 2018029921 W JP2018029921 W JP 2018029921W WO 2019044447 A1 WO2019044447 A1 WO 2019044447A1
Authority
WO
WIPO (PCT)
Prior art keywords
ray shielding
ray
protective glasses
medical protective
eyeglass
Prior art date
Application number
PCT/JP2018/029921
Other languages
English (en)
Japanese (ja)
Inventor
章 小田切
一身 小松原
昌典 坂東
直彦 真田
Original Assignee
ドクタージャパン株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2018104747A external-priority patent/JP6517980B2/ja
Application filed by ドクタージャパン株式会社 filed Critical ドクタージャパン株式会社
Publication of WO2019044447A1 publication Critical patent/WO2019044447A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/10—Safety means specially adapted therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/02—Goggles
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C1/00—Assemblies of lenses with bridges or browbars
    • G02C1/06—Bridge or browbar secured to or integral with closed rigid rims for the lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C5/00—Constructions of non-optical parts
    • G02C5/14—Side-members
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C9/00—Attaching auxiliary optical parts

Definitions

  • the present invention relates to medical goggles, and more particularly to medical goggles for protecting the eyes of medical personnel who handle radiation.
  • acrylic resins containing lead have low X-ray shielding function, they can not sufficiently protect the eyes of the user, and acrylic resins turn from transparent to yellowish due to aging, for example, medical practice There was a problem that caused problems. Furthermore, the user wearing eyeglasses for vision correction wears protective eyeglasses while wearing the eyeglasses, so that there are double frames, for example, obstructing the visual field and causing problems in work, handling of equipment, etc. Had to come.
  • the present invention has been made in view of the above-described circumstances, and a medical worker who handles radiation may or may not require glasses for correcting vision. It is an object of the present invention to provide medical protective glasses having a small burden and easy handling.
  • the invention according to claim 1 for solving the above-mentioned problems is medical protective glasses used by medical workers who handle radiation, which comprises an eyeglass frame and an X-ray shielding filter, and the eyeglass frame It consists of a front part to be attached and an eyeglass part to be removably attached to the eyeglass frame, wherein the eyeglass frame is made of an elastic material, and the temple has a length that wraps around the back of the head in use It is a medical protective goggles that is characterized.
  • the X-ray shielding filter contains a material having an X-ray shielding effect, or is provided with a coating of a material having an X-ray shielding effect on the surface.
  • the X-ray shielding filter has a lead coating on the surface, and further has a coating layer made of a resin material on the surface of the lead coating.
  • the transmission X-ray dose rate (mGy / min) measured according to JIS T61331-1 is a transmission X-ray dose rate measured without passing through an X-ray shielding filter
  • the X-ray shielding filter has an optical transparency of 85% or more for visible light, and the material having the X-ray shielding effect has atomic number 22 It is one of the materials consisting of any of the elements up to number 83, or a combination of two or more.
  • the front portion includes a front connection portion, a pair of rim portions holding the X-ray shielding filter connected by the front connection portion, and a side plate provided in a row with the rim portion.
  • An X-ray shielding layer is disposed on the front connecting portion, the rim portion, and the surface of the side plate.
  • the X-ray blocking layer forms a primer layer on the surface of the front connection portion, the rim portion and the side plate, and contains powder of a material having an X-ray blocking effect on the primer layer. It is formed by applying a resin composition and heating. The particle diameter of the powder of the material having the X-ray shielding effect is in the range of 10 ⁇ m to 150 ⁇ m.
  • the X-ray shielding layer contains lead powder, and the surface of the X-ray shielding layer is provided with a covering layer made of a resin material.
  • the eyeglass unit is detachable from the eyeglass frame and can be flipped up.
  • the protective eyeglass according to the present invention comprises an eyeglass frame and a front portion attached to the eyeglass frame having X-ray blocking performance, and the eyeglass frame is made of a springy material, and the temple is used on the back of the head during use Because of the length of the wraparound, when the user needs glasses for vision correction, whether they are required or not, they protect the eyes of the user from X-rays and when worn A good fit can be obtained, fatigue does not easily occur even when worn for a long time, and the burden on the user can be reduced.
  • FIG. 1 is a plan view showing an embodiment of the protective spectacles of the present invention
  • FIG. 2 is a front view thereof
  • FIG. 3 is a side view thereof
  • FIGS. 4 and 5 are perspective views thereof
  • FIG. 6 is a front view for demonstrating the structure of the protection spectacles of this invention, and has shown the state which spaced apart the one part member.
  • the protective eyeglass 1 of the present invention can be detachably attached to the eyeglass frame 11, the front portion 21 carrying the X-ray shielding filters 24 and 24 and attached to the eyeglass frame 11, And an eyeglass portion 31 attached to the Below, these spectacles frames 11, the front part 21, and the spectacles part 31 which comprise the protective spectacles 1 are demonstrated.
  • the eyeglass frame 11 has a bridge 12 and temples 14 and 14 attached to both ends 12 e of the bridge 12 via hinges 13 and 13.
  • the bridge 12 has a gently bent shape so that the front portion 21 described later can be locked by the central portion 12c, as shown in FIG. 6 from the front.
  • the bridge 12 is formed of a metal such as ⁇ titanium or titanium, or a resin material such as a polyamide resin, or is formed of a material formed of a combination of two or more of these materials.
  • the temples 14 and 14 are pivotable about hinges 13 and 13 and their end portions 14e and 14e are formed to be long and lightly abut along the back of the user's head and are shown in FIG. Thus, the end portions 14e and 14e are in close proximity to each other.
  • the temples 14 and 14 are formed of a metal such as ⁇ titanium or titanium, a resin material such as a polyamide resin, or the like, or formed of a material in which two or more of these materials are combined.
  • a material for forming the front half portion 14a of the temples 14 and 14 a good fit can be obtained when the protective eyeglass 1 is worn, and fatigue will occur even if worn for a long time
  • a ⁇ -titanium material which is hard, light in weight, hard to rust, and rich in elasticity.
  • a cushioned rubber resin for the rear half portion 14b of the temples 14 and 14 so that the ear part and the back of the head do not get hurt even if the protective glasses 1 are worn.
  • the rubber resin is preferably bendable and fitting adjustable according to the user.
  • Lavalon resin registered trademark manufactured by Mitsubishi Chemical Corporation can be used.
  • the front portion 21 includes a pair of rim portions 23 and 23 connected by the front connection portion 22 and carrying the X-ray shielding filters 24 and 24 and side plates 25 and 25 continuous with the rim portions 23 and 23. doing.
  • an X-ray shielding layer is disposed on the surfaces of the front connection portion 22, the rim portions 23 and 23, and the side plates 25 and 25, that is, all exposed surfaces of these members.
  • the side plates 25, 25 are members that shield X rays from entering the eye direction from the user's eyes and are separate from the temple 14, so they have freedom in shape.
  • the front connection portion 22 is fixed to the bridge 12 of the eyeglass frame 11 with the screw 16 through the base material 41 and integrated with the eyeglass frame 11. Be done.
  • the fastening structure of the front portion 21 to the bridge 12 will be described later.
  • the X-ray shielding filters 24 and 24 are light transmitting members containing a material having an X-ray shielding effect, or a film of a material having an X-ray shielding effect is formed on the surface of a molded light transmitting member. It is The X-ray shielding filters 24 and 24 have transparency to the extent that they can be used as protective glasses, and, for example, they are transparent such that the light transmittance in the visible light region is 85% or more, preferably 93% or more. Have a In the X-ray shielding filters 24 and 24, the transmission X-ray dose rate (mGy / min) measured according to JIS T6133-1 is half of the transmission X-ray dose rate measured without the X-ray shielding filter. It has an X-ray shielding ability that can achieve the following.
  • the material which expresses desired light transmittance from glass, an acrylic resin, etc. can be selected.
  • a material having an X-ray shielding effect a material composed of any element of atomic number 22 to 83 can be mentioned, and such a material may be used alone or in combination of two or more. Can be used in
  • X-ray shielding effects differ depending on the element, and in order to exert the same X-ray shielding effect, the amount contained by the X-ray shielding filters 24, 24 is increased as the atomic weight increases.
  • the thickness of the material coating on the surface of the X-ray shielding filters 24 can be reduced. Therefore, the material to be used, the amount of the material to be contained, or the thickness of the material film can be determined so that the X-ray shielding effect required for the protective spectacles 1 is exhibited.
  • lead-containing glass can be used as the X-ray shielding filters 24 and 24, and specific examples thereof include LX-57B manufactured by Nippon Electric Glass Co., Ltd.
  • the X-ray shielding filters 24 have a lead film on the surface, it is preferable to provide a coating layer made of a resin material on the surface of the lead film in consideration of the health of the human body.
  • the material of the front connecting portion 22, the rims 23 and 23, and the side plates 25 and 25 constituting the front portion 21 can be formed by a member that can withstand the heat at the time of forming the X-ray shielding layer described later.
  • resins such as amide resins and sulfone resins, and metals such as titanium and ⁇ titanium can be mentioned. More specifically, Radel (registered trademark) which is a sulfone resin can be preferably used.
  • the front connecting portion 22, the rim portions 23 and 23, and the side plates 25 and 25 are integrally formed, but the invention is not limited thereto, and bonding is performed after individual members are formed. Alternatively, they may be integrated by fusion bonding or the like. In that case, the material which comprises the front connection part 22, the rim parts 23 and 23, and the side plates 25 and 25 may all be the same, and may differ.
  • the X-ray blocking layer located on the surfaces of the front connecting portion 22, the rim portions 23 and 23, and the side plates 25 and 25 may be a resin layer containing a powder of a material having an X-ray blocking effect.
  • the powder of the material having the X-ray shielding effect may be a powder of a material consisting of any element of atomic number 22 to 83, and such powder may be used alone or in combination. It can be used in combination of the above.
  • the material having the X-ray shielding effect has different X-ray shielding effects depending on the elements, and in order to exert the same X-ray shielding effect, the larger the atomic weight, the smaller the amount of material contained in the X-ray shielding layer may be.
  • the thickness of the X-ray blocking layer can be reduced. Therefore, the material to be used, the amount of material to be contained, or the thickness of the X-ray shielding layer can be determined so that the X-ray shielding effect required for the protective spectacles 1 is achieved.
  • the X-ray shielding layer forms, for example, a primer layer on the surfaces of the front connection portion 22, the rim portions 23 and 23, and the side plates 25 and 25 and contains powder of a material having an X-ray shielding effect on this primer layer. It can form by apply
  • an epoxy resin primer can be used for the primer layer, and the primer layer is formed by spray coating on the entire surface of the front connection portion 22, the rim portions 23 and 23 and the side plates 25 and 25. be able to.
  • the thickness of the primer layer can be appropriately set, for example, in the range of 5 ⁇ m to 20 ⁇ m.
  • the thickness of the X-ray shielding layer becomes thicker as the particle diameter is larger, and when the particle diameter is too large, unevenness is noticeable on the surface of the X-ray shielding layer.
  • the particle diameter can be appropriately set, for example, in the range of 10 ⁇ m to 150 ⁇ m.
  • resin used for the resin composition containing the powder of the material which has an X-ray shielding effect an acrylic resin, a melamine resin, a urethane resin, a phenol resin, polyester resin etc. can be mentioned, for example.
  • the temperature in consideration of the heat resistance of the material which comprises the front connection part 22, the rim parts 23 and 23, and the side plates 25 and 25 for the heating after apply
  • the material constituting the front connection portion 22, the rim portions 23 and 23, and the side plates 25 is 25 is about 80 ° C. if the material is ABS resin, and if it is about 180 ° C. if it is a sulfone resin Radel.
  • the temperature can be appropriately set at about 500 ° C. or less.
  • the thickness of the X-ray shielding layer is the transmission X-ray dose rate (mGy / min) measured in accordance with JIS T61331-1 in the front connection portion 22 provided with the X-ray shielding layer, the rim portions 23 and 23, and the side plates 25 and 25. ) Can be set to half or less of the transmitted X-ray dose rate measured without passing through the X-ray shielding member, the X-ray shielding effect required for the protective glasses 1, the type of material used, and the material powder
  • the thickness of the X-ray blocking layer can be set, for example, in the range of 5 ⁇ m to 300 ⁇ m in consideration of the content rate of and the like.
  • lead powder is used as a material powder having an X-ray shielding effect, it is preferable to provide a covering layer made of a resin material on the surface of the X-ray shielding layer in consideration of health to the human body.
  • the eyeglass portion 31 constituting the protective eyeglass 1 has a pair of eyeglass lenses 32 for eyesight correction connected by the eyeglass connecting portion 33 using the support pin 36, and is attached to the bridge 12 of the eyeglass frame 11 (See FIG. 8).
  • the eyeglass portion 31 is attachable to and detachable from the bridge 12 of the eyeglass frame 11, and can be flipped up to the front portion 21 in a state of being attached to the eyeglass frame 11.
  • the structure in which the eyeglass portion 31 is detachable with respect to the bridge 12 and the structure in which the eyeglass portion 31 can be flipped up with respect to the front portion 21 are as follows.
  • FIG. 7 is a plan view for explaining the flip-up operation on the front portion 21 of the eyeglass portion 31 in the protective glasses 1 of the present invention.
  • the positions of the spectacle lenses 32 and 32 of the spectacles unit 31 when using the protective spectacles 1 are indicated by solid lines, and the spectacle lenses 32 and 32 in a state in which the spectacles unit 31 is flipped up with respect to the front unit 21 It is shown by a dashed line.
  • the eyeglass portion 31 can be flipped up with respect to the front portion 21, for example, cleaning of the opposing surfaces of the X-ray shielding filter 24 and the eyeglass lens 32 at the time of cleaning after use of the protective eyeglass Becomes easy.
  • FIG. 8 and 9 are perspective views for explaining the structure of the protective glasses of the present invention.
  • the bridge 12 is provided with a fitting protruding screw hole portion 15, and the base material 41 is provided so as to protrude from the base 42 of the L-shaped cross section and the L-shaped vertical surface of the base 42.
  • the nose pads 47, 47 can be made of, for example, silicone rubber or the like so that the nose does not hurt even if the protective glasses 1 are worn for a long time, and they do not slip off.
  • the bridge 12 is provided with two fitting projecting screw holes 15, 15, and the front portion 21 is engaged with the front connecting portion 22 so as to correspond to the fitting projecting screw holes 15, 15. It has two through holes 26 for common use.
  • the base member 41 is disposed so that the fitting projecting screw portion 15 is fitted in the through hole 44, and the fitting projecting screw hole portion 15 is fitted in the through hole 26 of the front portion 21. In the state where the portion 21 is disposed, the front portion 21 is integrated with the bridge 12 by screwing the screw 16 into the fitting protruding screw hole portion 15.
  • the protrusion 43 provided on the base 41 has a screw hole 45 on the side surface.
  • a pair of engagement plates 34, 34 are provided in the front direction in the eyeglass connecting portion 33 constituting the eyeglass portion 31 so as to protrude in the front direction, and through holes 35, 35 are provided in the engagement plates 34, 34. . Then, with the pair of engagement plates 34, 34 disposed so as to sandwich the protruding portion 43 of the base material 41, the eyeglass portion 31 is screwed by screwing the screw 17 into the screw hole 45 of the protruding portion 43. It is fixed to the bridge 12.
  • the eyeglass portion 31 is attachable to and detachable from the bridge 12 through the base material 41.
  • the eyeglass portion 31 is removed from the bridge 12 and used can do. Also, by wearing the glasses 31 with different degrees of vision correction, a plurality of users with different degrees of vision correction can share one protective eyeglass 1.
  • the eyeglass portion 31 can be flipped up with respect to the front portion 21 centering on the screw 17. Therefore, for example, at the time of cleaning after use of the protective glasses, the opposing surfaces of the X-ray shielding filter 24 and the eyeglass lens 32 can be easily cleaned without removing the eyeglass portion 31. In addition, even if the eyeglass portion 31 is flipped up operation many times and the locking state of the eyeglass portion 31 with respect to the projecting portion 43 of the base portion 41 becomes loose, the loosening can be resolved by tightening the screw 17.
  • the protective glasses 1 of the present invention having such a configuration protect the eyes of the user from X-rays, whether the users require glasses for vision correction or not. Can reduce the burden of handling and make handling simple.
  • the temples 14 and 14 constituting the eyeglass frame 11 are rotatably disposed at both ends of the bridge 12 via the hinges 13 and 13, but at both ends of the bridge 12, The temples may be directly connected to the bridge 12 at a desired angle.
  • the spectacles lenses 32 and 32 are directly fixed to the spectacles connection part 33 using the support pin 36, a pair of rim part is provided in a row with the spectacles connection part 33, The eyeglass lenses 32, 32 may be held.
  • Resin Composition for Forming X-Ray Shielding Layer The resin composition of the following composition was prepared as a resin composition for X-ray shielding layer formation.
  • Acrylic resin (acrylic resin paint NK-IV manufactured by Nikken Kogyo Co., Ltd.) 100 parts by mass Lead powder (average particle diameter 20 ⁇ m) 15 parts by mass Solvent (thinner manufactured by Nikken Kogyo Co., Ltd.) 20 parts by mass
  • a plate material (0.5 mm in thickness) made of a sulfone resin (Ledell (registered trademark)) and titanium is used as a material for the front portion 21 including the front connecting portion 22, rim portions 23 and 23, and side plates 25 and 25. Plates (thickness 0.5 mm, 1.0 mm) were prepared. Moreover, the board
  • an epoxy resin primer (epoxy primer NK-IV manufactured by Nikken Co., Ltd.) was spray-coated on the entire surface of each of the above plate materials to form a primer layer (about 10 ⁇ m in thickness).
  • the above-mentioned resin composition for forming an X-ray blocking layer is spray-coated on the primer layer to form an X-ray blocking layer (thickness of about 70 ⁇ m of one layer), and seven types of samples shown in Table 1 below. Was produced.
  • the transmission X-ray dose rates in the samples 1 to 6 were half or less of the transmission X-ray dose rates of the blank, and it was confirmed that the X-ray shielding effect was good.
  • Sample 7 was also half or less of the transmission X dose rate of the blank, but the material was stainless steel, and the specific gravity was large and could not be used for protective eyeglasses.
  • the goggles according to the present invention are as described above, and the eyeglass frame 11 and the front portion 21 contain a material having X-ray protection, and the eyeglass portion 31 is made of an elastic material. Since it is the length that wraps around the back of the head at the time of use, it protects the user's eyes from X-rays, either when the user needs glasses for vision correction or when they do not. And, when worn, a good fit can be obtained, fatigue does not appear even when worn for a long time, and the burden on the user is alleviated, and its industrial applicability is extremely high. It is large.

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  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biomedical Technology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Pathology (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biophysics (AREA)
  • Vascular Medicine (AREA)
  • Eyeglasses (AREA)

Abstract

Le problème décrit par la présente invention est de fournir des lunettes de protection pour un traitement médical, qui est facile à manipuler et a peu de charge sur un praticien médical exposé aux rayonnements à la fois lorsque l'utilisateur a et n'a pas besoin de lunettes correctrices. La solution selon l'invention porte sur des lunettes de protection pour traitement médical destinées à être utilisées par un praticien médical exposé aux rayonnements, comprenant : une monture de lunettes 11 ; une partie avant 21 fixée à la monture de lunettes 11 et comprenant des filtres bloquant les rayons X 24, 24 ; et une partie de lunettes fixée de manière amovible à la monture de lunettes 11. La monture de lunettes 11 est configurée à partir d'un matériau élastique et les branches 14 de celle-ci ont une longueur suffisante pour entourer la tête le long de la région occipitale lors de l'utilisation.
PCT/JP2018/029921 2017-08-31 2018-08-09 Lunettes de protection pour traitement médical WO2019044447A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2017166692 2017-08-31
JP2017-166692 2017-08-31
JP2018104747A JP6517980B2 (ja) 2018-05-31 2018-05-31 医療用保護眼鏡
JP2018-104747 2018-05-31

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Publication Number Publication Date
WO2019044447A1 true WO2019044447A1 (fr) 2019-03-07

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PCT/JP2018/029921 WO2019044447A1 (fr) 2017-08-31 2018-08-09 Lunettes de protection pour traitement médical

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3413872A1 (de) * 1983-04-27 1984-10-31 L'Amy S.A., Morez Brille
JP3011320U (ja) * 1994-07-29 1995-05-23 英次 安藤 Ｘ線防護オーバーグラス
JP2013050557A (ja) * 2011-08-30 2013-03-14 Sony Corp シャッター眼鏡装置
JP2015155806A (ja) * 2014-02-20 2015-08-27 積水樹脂株式会社 放射線遮蔽板

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3413872A1 (de) * 1983-04-27 1984-10-31 L'Amy S.A., Morez Brille
JP3011320U (ja) * 1994-07-29 1995-05-23 英次 安藤 Ｘ線防護オーバーグラス
JP2013050557A (ja) * 2011-08-30 2013-03-14 Sony Corp シャッター眼鏡装置
JP2015155806A (ja) * 2014-02-20 2015-08-27 積水樹脂株式会社 放射線遮蔽板

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