WO2022118693A1 - 医療用フェイスガード、医療用フェイスシールド、医療用フレーム、及び医療用フェイスガードの製造方法 - Google Patents

医療用フェイスガード、医療用フェイスシールド、医療用フレーム、及び医療用フェイスガードの製造方法 Download PDF

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Publication number
WO2022118693A1
WO2022118693A1 PCT/JP2021/042802 JP2021042802W WO2022118693A1 WO 2022118693 A1 WO2022118693 A1 WO 2022118693A1 JP 2021042802 W JP2021042802 W JP 2021042802W WO 2022118693 A1 WO2022118693 A1 WO 2022118693A1
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WO
WIPO (PCT)
Prior art keywords
shield
medical
face
frame
face shield
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2021/042802
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English (en)
French (fr)
Japanese (ja)
Inventor
一也 齊藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Group Corp
Original Assignee
Sony Group Corp
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
Application filed by Sony Group Corp filed Critical Sony Group Corp
Priority to JP2022566849A priority Critical patent/JPWO2022118693A1/ja
Priority to US18/254,188 priority patent/US20240024161A1/en
Publication of WO2022118693A1 publication Critical patent/WO2022118693A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • A61F9/029—Additional functions or features, e.g. protection for other parts of the face such as ears, nose or mouth; Screen wipers or cleaning devices
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
    • 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
    • A61F9/022—Use of special optical filters, e.g. multiple layers, filters for protection against laser light or light from nuclear explosions, screens with different filter properties on different parts of the screen; Rotating slit-discs
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/02—Masks

Definitions

  • This disclosure relates to a method for manufacturing a medical face guard, a medical face shield, a medical frame, and a medical face guard.
  • images of medical imaging devices such as endoscopes and microscopes are displayed on the display device as three-dimensional images, and images suitable for surgery are provided to the surgeon.
  • medical staff such as an operator wears glasses provided with a polarizing shield that enables three-dimensional viewing (Patent Document 1).
  • One aspect of the present disclosure provides a method for manufacturing a medical face guard, a medical face shield, a medical frame, and a medical face guard that can prevent the polarization state from collapsing.
  • the medical face guard is attached to a frame mounted on the head of a medical staff and a frame so as to cover at least in front of the eyes of the medical staff, and is polarized so as to pass only light in a predetermined polarized state. It comprises a shield and a face shield that is attached to the frame so as to cover at least in front of the medical staff, is located in front of the polarizing shield in the anterior direction of the eye, has transparency, and has a low birefringence index.
  • the medical face shield according to one aspect of the present disclosure is attached to a frame to which a polarizing shield that allows only light in a predetermined polarized state to pass so as to cover at least the front of the medical staff is attached, and is anterior to the polarizing shield in the anterior direction. It is located in, has transparency and has a low birefringence index.
  • the medical frame according to one aspect of the present disclosure has a polarizing shield that allows only light in a predetermined polarized state to pass through at least in front of the eyes of medical staff, and is located in front of the polarizing shield in the front direction of the eyes to provide transparency.
  • a face shield having a low birefringence index is attached.
  • the method for manufacturing a medical face guard includes a step of preparing a face shield having transparency and a low birefringence index, and a face shield having only light in a predetermined polarized state in the front direction of the eye. Includes the step of attaching the polarizing shield and face shield to the frame so as to cover at least in front of the medical staff so that they are located in front of the polarizing shield through which the light passes.
  • FIG. 1 is an exploded perspective view showing an example of a schematic configuration of a face guard according to an embodiment.
  • the face guard is a medical face guard used by medical staff in the medical field. Examples of medical sites are operating rooms, treatment rooms, and the like. Examples of medical staff are surgeons performing surgery, surgical caregivers such as scopists and nurses.
  • FIG. 1 the XYZ coordinate system is shown. The X-axis direction corresponds to the left-right direction. The Y-axis direction corresponds to the vertical direction. The Z-axis direction corresponds to the front-back direction.
  • the face guard 1 includes a frame 10, a polarizing shield 20, and a face shield 30.
  • FIG. 1 shows a state in which the frame 10, the polarization shield 20, and the face shield 30 are disassembled in the Z-axis direction.
  • the frame 10 is a medical frame that is attached to the head of a medical staff with the polarizing shield 20 and the face shield 30 attached to the frame 10.
  • the frame 10 will be described with reference to FIGS. 2 to 6.
  • 2 to 6 are views showing an example of a schematic configuration of a frame.
  • FIG. 2 is a plan view of the frame 10.
  • FIG. 3 is a front view of the frame 10.
  • FIG. 4 is a rear view of the frame 10.
  • FIG. 5 is a left side view of the frame 10.
  • FIG. 6 is a right side view of the frame 10.
  • the frame 10 is made of, for example, a material resistant to sterilization.
  • materials for such a frame 10 are PC (polycarbonate), elastomer resin, and the like.
  • the surface of the frame 10 may be processed so as to be resistant to sterilization. By enabling the sterilization process, the frame 10 can be used repeatedly.
  • the frame 10 includes a frame main body 11, a mounting portion 12, and a knob portion 13.
  • the frame body 11 has a shape that fits the head of a medical staff.
  • the frame body 11 has a spectacle-shaped shape and extends along the eye and temples of the medical staff.
  • the frame body 11 includes a front portion 111 and a side portion 112.
  • the front part 111 extends in the left-right direction (X-axis direction) along the eye part of the medical staff.
  • the front portion 111 includes a pad portion 111L and a pad portion 111R.
  • the pad portion 111L and the pad portion 111R are a pair of nose pad portions extending downward (Y-axis negative direction) from the central portion of the front portion 111.
  • the pad portion 111L and the pad portion 111R abut on the left and right sides of the nose of the medical staff to position the front portion 111.
  • the side portion 112 extends in the anteroposterior direction (Z-axis direction) along the temple portion of the medical staff.
  • the side portions 112 are a pair of side portions extending rearward (in the negative direction of the Z axis) from both ends of the front portion 111.
  • the left side portion 112 is referred to as a side portion 112L and is shown in the drawing.
  • the right side portion 112 is referred to as a side portion 112R and is illustrated. A part of the side portion 112L and the side portion 112R abuts on, for example, the left ear portion and the right ear portion of the medical staff to position the side portion 112.
  • the mounting portion 12 mounts the polarizing shield 20 and the face shield 30 on the frame 10 in a detachable manner.
  • the mounting portion 12 mounts the polarizing shield 20 and the face shield 30 to the frame main body 11 so as to be located on opposite sides of the frame 10.
  • the mounting portion 12 is provided on the side portion 112 of the frame body 11.
  • the mounting portion 12 provided on the side portion 112L is referred to as a mounting portion 12L and is shown in the drawing.
  • the mounting portion 12 provided on the side portion 112R is referred to as a mounting portion 12R and is shown in the drawing.
  • the mounting portion 12 includes a fixing member 121 and a fixing member 122.
  • the fixing member 121 and the fixing member 122 of the mounting portion 12L are referred to as the fixing member 121L and the fixing member 122L and are shown in the drawing.
  • the fixing member 121 and the fixing member 122 of the mounting portion 12R are referred to as the fixing member 121R and the fixing member 122R and are shown in the drawing.
  • the fixing member 121 is a first fixing member that fixes the movement of the polarizing shield 20 and the face shield 30 with respect to the frame body 11 in the thickness direction (in this example, the X-axis direction).
  • the fixing member 121 can also fix the movement of the polarizing shield 20 and the face shield 30 with respect to the frame body 11 in the plane direction (YZ plane direction in this example).
  • the fixing member 121 fixes the polarizing shield 20 inside the frame body 11 and the face shield 30 outside the frame body 11.
  • the fixing member 121 is a fastener that is detachably (detachably) fixed to the side portion 112 of the frame body 11, and is attached to the inside (head side of the medical staff) and the outside of the frame body 11. Appears as a protruding protrusion.
  • the inner protrusion of the fixing member 121 is aligned with the hole 21 (opening) of the polarizing shield 20, which will be described later, and the polarizing shield 20 is pressed against the inner surface of the frame body 11 to be fixed.
  • the outer protrusion of the fixing member 121 is aligned with the hole 31 of the face shield 30, which will be described later, and the face shield 30 is pressed against the outer surface of the frame body 11 to be fixed.
  • the fixing member 121L and the fixing member 121R may have different shapes from each other. In this case, since the attachment of the polarizing shield 20 to the frame 10 is uniquely determined, it is possible to prevent the polarizing shield 20 from being attached to the frame 10 in the opposite state, for example.
  • the fixing member 122 is a second fixing member that fixes rotation (rotation with the X axis as the rotation axis in this example) in the plane direction (YZ plane direction in this example) of the polarizing shield 20 and the face shield 30 with respect to the frame body 11.
  • the fixing member 122 is a plate-shaped member that engages with the notch 22 of the polarizing shield 20 and the notch 32 of the face shield 30.
  • the fixing member 122 has a plate shape with the XY plane direction as the plane direction, and projects to the outside of the frame body 11 behind the fixing member 121 (Z-axis negative direction).
  • the fixing member 122 also protrudes to some extent inside the frame body 11.
  • the outward protrusion of the fixing member 122 engages with the notch 32 of the face shield 30.
  • the inner protrusion of the fixing member 122 engages with the notch 22 of the polarizing shield 20.
  • the knob portion 13 is gripped when the face guard 1 is attached to the medical staff or the face guard 1 is removed from the medical staff. For example, a worker other than the medical staff who uses the face guard 1 can prevent the medical staff from touching the face guard 1 by grasping the knob portion 13 and attaching the face guard 1 to the medical staff. ..
  • the knob portion 13 has a plate shape with the horizontal direction (XZ plane direction) as the plane direction, and projects to the outside of the frame body 11 behind the fixing member 122 (Z-axis negative direction).
  • the knob portion 13 located behind the fixing member 122L is referred to as a knob portion 13L and is shown in the drawing.
  • the knob portion 13 located behind the fixing member 122R is referred to as a knob portion 13R and is shown in the drawing.
  • FIG. 7 is a diagram showing an example of a schematic configuration of the polarizing shield, and is a front view of the polarizing shield 20 in a non-curved state.
  • the polarizing shield 20 is attached to the frame 10 so as to cover at least the front part of the eyes of medical staff.
  • the polarization shield 20 may be made of a transparent material.
  • An anti-fog coating may be applied to the inner surface of the polarizing shield 20 (the surface on the head side of the medical staff).
  • a water-repellent coating may be applied to the outer surface of the polarizing shield 20.
  • a gap may be provided between the frame main body 11 of the frame 10 and the polarizing shield 20 to improve the air permeability.
  • the polarization shield 20 has a polarization characteristic that allows only light in a predetermined polarization state to pass through.
  • An example of light in a predetermined polarized state is light in a state of being polarized so that a three-dimensional image is displayed.
  • Examples of materials for such a polarizing shield 20 are PC (polycarbonate), TAC (triacetyl cellulose) and the like.
  • the polarization shield 20 may be a three-dimensional visual shield.
  • the polarization shield 20 allows only light in a predetermined polarization state to pass so as to enable the three-dimensional image to be viewed three-dimensionally.
  • a display device displays a three-dimensional image including light polarized in a predetermined direction and light polarized in the opposite direction.
  • the polarization shield 20 guides the light polarized in a predetermined direction to the left eye of the medical staff, and passes the light polarized in the opposite direction to the right eye of the medical staff.
  • the polarization shield 20 may be a two-dimensional visual shield.
  • the polarization shield 20 allows only light in a predetermined polarization state to pass so that the three-dimensional image can be viewed two-dimensionally.
  • the polarization shield 20 allows light to pass through so that only one of the light polarized in a predetermined direction and the light polarized in the opposite direction is directed to the eyes of the medical staff.
  • An identification mark such as "2D" or "3D” may be attached to the polarizing shield 20 so as to easily distinguish whether the polarizing shield 20 is a two-dimensional visual shield or a three-dimensional visual shield.
  • the polarizing shield 20 has a hole 21 and a notch 22.
  • the hole 21 and the notch 22 are a pair of holes 21 and a pair of notches 22.
  • the hole 21 and the notch 22 on the left side are referred to as the hole 21L and the notch 22L and are shown in the drawing.
  • the hole 21 and the notch 22 on the right side are referred to as the hole 21R and the notch 22R and are shown in the drawing.
  • the hole 21 is aligned with the inner protrusion of the fixing member 121 of the frame 10.
  • the hole 21L has a shape corresponding to the fixing member 121L.
  • the hole 21R has a shape corresponding to the fixing member 121R.
  • the holes 21L and the holes 21R also have different shapes.
  • the notch 22 engages with the inwardly protruding portion of the fixing member 122 of the frame 10, as described above.
  • the notch 22 has a shape corresponding to the fixing member 122. Since the fixing member 122 has a plate shape as described above, in this example, the notch portion 22 has a concave shape (this character shape, U shape, etc.) matching the plate shape.
  • the concave bottom surface abuts on the plate surface of the fixing member 122.
  • the concave side surface abuts on the plate side surface of the fixing member 122.
  • FIG. 8 is a diagram showing an example of a schematic configuration of the face shield 30, and is a front view of the face shield 30 in a non-curved state.
  • the face shield 30 is a medical face shield attached to the frame 10 so as to cover at least the front of the medical staff.
  • the face shield 30 has transparency (for example, is transparent) and is located in front of the polarizing shield 20 in the frontal direction (Z-axis positive direction).
  • the face shield 30 has a length larger than the length of the polarizing shield 20 at least in the vertical direction (Y-axis direction).
  • the portion of the head of the medical staff that is not covered by the polarizing shield 20 (for example, the forehead, nose, mouth, chin, etc.) is also covered by the face shield 30.
  • the face shield 30 may have a length larger than the length of the polarizing shield 20 even in the lateral direction.
  • the temples and ears of medical staff are also covered with the face shield 30.
  • the face shield 30 that covers a wider area than the polarizing shield 20 can improve the protection function of the face guard 1, for example, preventing droplets from the patient from adhering to the head of the medical staff.
  • the medical staff will view the image (video) from the display device or the like in three dimensions or two dimensions via the face shield 30 and the polarizing shield 20.
  • the conventional face shield is made of PET material, when image light having a predetermined polarization state (for example, three-dimensional image light) output from a display device or the like passes through the face shield, the polarization state of the image light is greatly disrupted. It ends up. This may make it difficult for medical staff to correctly view the image light from the display device or the like in three dimensions or two dimensions.
  • the face shield 30 having a low birefringence index is adopted so as to suppress the polarization state from being disrupted by the face shield 30 (to maintain the polarization state).
  • the face shield 30 has a low birefringence index that maintains the polarized state of the light so that the light in a predetermined polarized state still passes through the polarizing shield 20 even after passing through the face shield 30.
  • a low birefringence index is a birefringence index lower than that of, for example, a PET (polyethylene terephthalate) film.
  • the face shield 30 may have a retardation value of 10 nm or less. This enables appropriate three-dimensional vision or two-dimensional vision from a practical point of view.
  • the material of the face shield 30 may be appropriately selected as long as it has a low birefringence index.
  • specific materials are TAC (triacetyl cellulose), PMMA (acrylic), PC (polycarbonate), COP (cycloolefin polymer) and the like.
  • the dimensions (thickness, etc.) of the face shield 30 may be appropriately designed so as to obtain the above-mentioned low birefringence index.
  • An example of the thickness of the face shield 30 is about several tens of ⁇ m to one hundred and several tens of ⁇ m. From the viewpoint of ensuring strength and the like, the face shield 30 may have a thickness of 100 ⁇ m or more.
  • the face shield 30 having a desired low birefringence index may be selected (screened) in the manufacturing process.
  • the face shield 30 that satisfies the specifications by measuring the above-mentioned retardation value may be selected.
  • An example of the spec is a spec in which the upper limit of the retardation value is 10 nm. In consideration of the margin, a retardation value lower than 10 nm to some extent may be set as the upper limit value.
  • the face shield 30 has a hole 31 and a notch 32.
  • the hole 31 and the notch 32 are a pair of holes 31 and a pair of notches 32.
  • the hole 31 and the notch 32 on the left side are referred to as the hole 31L and the notch 32L and are shown in the drawing.
  • the hole 31 and the notch 32 on the right side are referred to as the hole 31R and the notch 32R and are shown in the drawing.
  • the hole 31 fits with the outer protrusion of the fixing member 121 of the frame 10.
  • the hole 31L has a shape corresponding to the fixing member 121L.
  • the hole 31R has a shape corresponding to the fixing member 121R.
  • the holes 31L and the holes 31R also have different shapes.
  • the notch 32 engages with the outward protrusion of the fixing member 122 of the frame 10, as described above.
  • the notch 32 has a shape corresponding to the fixing member 122. Since the fixing member 122 has a plate shape as described above, in this example, the notch portion 32 has a concave shape matching the plate shape.
  • the concave bottom surface abuts on the plate surface of the fixing member 122.
  • the concave side surface abuts on the plate side surface of the fixing member 122.
  • a face guard 1 having the polarizing shield 20, the frame 10 and the face shield 30 in this order can be obtained.
  • the face guard 1 since the face shield 30 located in front of the polarizing shield 20 has a low birefringence index, the polarized state of the image from the display device or the like is less likely to be distorted. Therefore, it is possible to perform three-dimensional vision or two-dimensional vision properly through the polarizing shield 20.
  • FIG. 9 is a flowchart showing an example of a method for manufacturing a face guard.
  • the face shield is manufactured.
  • a face shield having a thickness of about several tens of ⁇ m to about one hundred and several tens of ⁇ m is manufactured.
  • Multiple face shields may be manufactured.
  • step S2 prepare a face shield that meets the specifications. For example, the retardation value of each of the plurality of face shields manufactured in step S1 is measured, and the face shield having the measured value of 10 nm or less is selected as the face shield 30.
  • step S3 attach the polarization shield and face shield to the frame. That is, the face guard 1 is assembled by attaching the face shield 30 prepared in step S2 to the frame 10 together with the polarizing shield 20 in the manner shown in FIG. 1 described above.
  • the face guard 1 can be manufactured as described above.
  • the polarizing shield 20 and the face shield 30 are located on opposite sides of the frame 10 .
  • the polarizing shield 20 and the face shield 30 may be arranged together on the front side of the frame 10 or collectively on the rear side of the frame 10. May be good.
  • the specific configuration of mounting the polarizing shield 20 and the face shield 30 to the frame 10 is not limited to the above-mentioned mounting portion 12.
  • the polarization shield 20 and the face shield 30 may be fixed to the frame 10 only by the fixing member 121.
  • the fixing member 121 not only the fastener but also any configuration capable of fixing the polarizing shield 20 and the face shield 30 to the frame 10 may be used.
  • the fixing member 121 and the fixing member 121R of the frame 10 may have the same shape as each other, and the holes 31L and the holes 31R of the face shield 30 may also have the same shape as each other. The same applies to the holes 21L and 21R of the polarizing shield 20.
  • the face guard 1 may have a spectacle-shaped shape as a whole. In this case, the mouth, chin, etc. of the medical staff may be exposed without being covered by the face shield 30.
  • indexes other than the retardation value may be used as an index for evaluating the low birefringence index of the face shield 30.
  • the face guard 1 is attached to the frame 10 attached to the head of the medical staff and the frame 10 so as to cover at least in front of the eyes of the medical staff, and is in a predetermined polarized state.
  • a polarizing shield 20 that allows only light to pass through, and a frame 10 that is attached to the frame 10 so as to cover at least the front of the medical staff.
  • a medical face guard comprising a face shield 30 having a birefringence index.
  • the polarizing shield 20 may be a three-dimensional visual shielding shield that allows only light in a predetermined polarized state to pass through so that the three-dimensional image can be viewed three-dimensionally.
  • the polarizing shield 20 may be a two-dimensional visual shielding shield that allows only light in a predetermined polarized state to pass through so that the three-dimensional image can be viewed two-dimensionally.
  • the face shield 30 located in front of the polarizing shield 20 has a low birefringence index, the polarized state of the image from the display device or the like is less likely to be distorted. Therefore, it is possible to perform three-dimensional viewing or two-dimensional viewing properly through the polarizing shield 20.
  • the face shield 30 may have a low birefringence index that maintains the polarized state of the light so that the light in a predetermined polarized state still passes through the polarized shield 20 even after passing through the face shield 30.
  • a low birefringence index that maintains the polarized state of the light so that the light in a predetermined polarized state still passes through the polarized shield 20 even after passing through the face shield 30.
  • the face shield 30 may have a retardation value of 10 nm or less. For example, when the face shield 30 has such a retardation value, appropriate three-dimensional vision or two-dimensional vision becomes possible.
  • the material of the face shield 30 may contain at least one of TAC (triacetyl cellulose), PMMA (acrylic), PC (polycarbonate) and COP (cycloolefin polymer).
  • TAC triacetyl cellulose
  • PMMA acrylic
  • PC polycarbonate
  • COP cycloolefin polymer
  • the face shield 30 may have a length larger than the length of the polarizing shield 20 at least in the vertical direction (Y-axis direction). As a result, the portion of the head of the medical staff that is not covered by the polarizing shield 20 can be covered with the face shield 30 to improve the protective function of the face guard 1.
  • the frame 10 may include a frame main body 11, and a mounting portion 12 for attaching the polarizing shield 20 and the face shield 30 to the frame main body 11 so as to be located on opposite sides of the frame main body 11.
  • the face shield 30 can be arranged in front of the polarizing shield 20.
  • the mounting portion 12 includes a fixing member 121 (first fixing member) that fixes the movement of the face shield 30 in the thickness direction (X-axis direction) with respect to the frame body 11, and a plane direction (YZ) of the face shield 30 with respect to the frame body 11. It may include a fixing member 122 (second fixing member) that fixes rotation in a plane). As a result, the face shield 30 can be firmly fixed and attached to the frame 10.
  • the face shield 30 is detachably attached to the frame 10, the fixing member 121 is a fastener, and the face shield 30 may have a hole 31 for mating with the fixing member 121.
  • the face shield 30 can be detachably attached to the frame 10 by using such a combination.
  • the face shield 30 can be made disposable.
  • the fixing member 122 is a plate-shaped member, and the face shield 30 may have a notch 32 that engages with the fixing member 122. For example, such engagement can be used to prevent the face shield 30 from rotating.
  • the face shield 30 described with reference to FIG. 1 and the like is also an aspect of the present disclosure. That is, the face shield 30 is attached to the frame 10 to which the polarizing shield 20 that allows only the light in a predetermined polarized state to pass so as to cover at least the front of the eyes of the medical staff is attached, and is located in front of the polarizing shield 20 in the front direction of the eyes. , A medical face shield with transparency and low birefringence. Even with such a face shield 30, it is possible to prevent the polarization state from being disrupted as described above.
  • the frame 10 described with reference to FIG. 1 and the like is also an aspect of the present disclosure. That is, the frame 10 has a polarizing shield 20 that allows only light in a predetermined polarized state to pass so as to cover at least the front of the medical staff, and is located in front of the polarizing shield 20 in the front of the eye, has transparency, and has low birefringence. It is a medical frame to which a face shield having a refractive index is attached. Even with such a frame 10, it is possible to prevent the polarization state from being disrupted as described above.
  • the manufacturing method includes a step of preparing a face shield 30 having transparency and a low birefringence index (steps S1 and S2), and the face shield 30 passing only light in a predetermined polarized state in the front direction of the eye.
  • the step (step S3) of attaching the polarizing shield 20 and the face shield 30 to the frame 10 so as to cover at least in front of the eyes of the medical staff is included so as to be located in front of the polarizing shield 20. For example, in this way, the face guard 1 described above can be manufactured.
  • the present technology can also have the following configurations.
  • the face shield has a low birefringence index that maintains the polarized state of the light so that the light in the predetermined polarized state still passes through the polarized shield even after passing through the face shield.
  • the medical face guard according to (1).
  • the face shield has a retardation value of 10 nm or less.
  • the face shield material comprises at least one of triacetyl cellulose, acrylic, polycarbonate and cycloolefin polymer.
  • the face shield has a length greater than the length of the polarizing shield, at least in the vertical direction.
  • the frame is With the frame body A mounting portion for attaching the polarizing shield and the face shield to the frame body so as to be located on opposite sides of the frame body. including, The medical face guard according to any one of (1) to (5).
  • the mounting part is A first fixing member for fixing the movement of the face shield in the thickness direction with respect to the frame body, and A second fixing member that fixes the rotation of the face shield in the plane direction with respect to the frame body, and including, The medical face guard according to (6).
  • the face shield is detachably attached to the frame and is attached to the frame.
  • the first fixing member is a fastener
  • the first fixing member is a fastener.
  • the face shield has a hole for mating with the first fixing member.
  • the second fixing member is a plate-shaped member.
  • the face shield has a notch that engages with the second fixing member.
  • the polarization shield is a shield for three-dimensional viewing that allows only light in the predetermined polarization state to pass so as to enable three-dimensional viewing of a three-dimensional image.
  • the medical face guard according to any one of (1) to (9).
  • the polarization shield is a two-dimensional viewing shield that allows only light in the predetermined polarized state to pass so as to enable two-dimensional viewing of a three-dimensional image.
  • the medical face guard according to any one of (1) to (9).
  • a polarization shield that allows only light in a predetermined polarization state to pass so as to cover at least the front of the medical staff is attached and is located in front of the polarization shield in the front direction of the eye, and has transparency and low birefringence.
  • a medical face shield with a refractive index (13) A polarization shield that allows only light in a predetermined polarization state to pass through at least in front of the medical staff, and a face shield that is located in front of the polarization shield in the front direction of the eye and has transparency and a low birefringence index.
  • the process of preparing a face shield that has transparency and low birefringence The polarizing shield and the face shield are attached to the frame so as to cover at least the front of the medical staff so that the face shield is located in front of the polarizing shield that allows only light in a predetermined polarized state to pass in the front direction of the eye. Process and including, How to make a medical face guard.

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PCT/JP2021/042802 2020-12-01 2021-11-22 医療用フェイスガード、医療用フェイスシールド、医療用フレーム、及び医療用フェイスガードの製造方法 Ceased WO2022118693A1 (ja)

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US20230363479A1 (en) * 2022-05-13 2023-11-16 Embrace Health Care LLC Conforming face shield and frame system

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US20170239089A1 (en) * 2014-10-23 2017-08-24 Tidi Products, Llc System and Method for Protective Eyewear
JP2019061265A (ja) * 2014-05-07 2019-04-18 デクセリアルズ株式会社 眼鏡用保護具
JP6747296B2 (ja) * 2015-02-06 2020-08-26 ソニー株式会社 手術用フェイスガード、手術用フレーム及び手術システム

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AU2011227042B2 (en) * 2010-03-19 2014-03-06 Oakley, Inc. Goggle
JP5985100B1 (ja) * 2015-05-21 2016-09-06 デクセリアルズ株式会社 透明積層体
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JP2019061265A (ja) * 2014-05-07 2019-04-18 デクセリアルズ株式会社 眼鏡用保護具
US20170239089A1 (en) * 2014-10-23 2017-08-24 Tidi Products, Llc System and Method for Protective Eyewear
JP6747296B2 (ja) * 2015-02-06 2020-08-26 ソニー株式会社 手術用フェイスガード、手術用フレーム及び手術システム

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