WO2017065217A1 - Film optique, élément de raccordement, champ pour caméra endoscopique, dispositif endoscopique, système médical, procédé de production de film optique et procédé de fabrication d'élément de connexion - Google Patents

Film optique, élément de raccordement, champ pour caméra endoscopique, dispositif endoscopique, système médical, procédé de production de film optique et procédé de fabrication d'élément de connexion Download PDF

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Publication number
WO2017065217A1
WO2017065217A1 PCT/JP2016/080382 JP2016080382W WO2017065217A1 WO 2017065217 A1 WO2017065217 A1 WO 2017065217A1 JP 2016080382 W JP2016080382 W JP 2016080382W WO 2017065217 A1 WO2017065217 A1 WO 2017065217A1
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WO
WIPO (PCT)
Prior art keywords
endoscope
optical film
connecting member
drape
camera
Prior art date
Application number
PCT/JP2016/080382
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English (en)
Japanese (ja)
Inventor
馬場　幸久
竹内　正則
Original Assignee
デクセリアルズ株式会社
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
Application filed by デクセリアルズ株式会社 filed Critical デクセリアルズ株式会社
Priority to EP16855470.7A priority Critical patent/EP3338616B1/fr
Priority to CN201680060130.1A priority patent/CN108135449B/zh
Priority to US15/760,688 priority patent/US11701195B2/en
Priority to KR1020187012162A priority patent/KR102644404B1/ko
Priority claimed from JP2016201425A external-priority patent/JP6800694B2/ja
Publication of WO2017065217A1 publication Critical patent/WO2017065217A1/fr

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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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/11—Anti-reflection coatings
    • G02B1/118—Anti-reflection coatings having sub-optical wavelength surface structures designed to provide an enhanced transmittance, e.g. moth-eye structures
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
    • G02B23/26—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes using light guides

Definitions

  • the present invention relates to an optical film, a connecting member, an endoscope camera drape, an endoscope apparatus, a medical system, an optical film manufacturing method, and a connecting member manufacturing method.
  • a grip is provided at the tip of the drape portion.
  • a through hole is formed at the tip of the grip, and an insertion portion of the endoscope (that is, a portion inserted into the patient's body) is passed through the through hole.
  • a grip covers the connection part of an endoscope and an endoscope camera. The practitioner mainly operates the endoscope with this grip.
  • the tip of the drape portion is attached to the base portion of the endoscope (that is, the portion attached to the endoscope camera).
  • a connecting member is provided at the tip of the drape portion. The connecting member closes the opening at the tip of the drape portion.
  • the connecting member connects the endoscope and the endoscope camera.
  • the central portion of the connecting member (that is, the portion through which incident light incident on the endoscope camera passes from the endoscope) is formed of a transparent member.
  • Patent Document 1 has a problem that it is extremely difficult to maintain the airtightness between the wall surface of the through hole and the insertion portion of the endoscope. For this reason, in the technique disclosed in Patent Document 1, there is a problem that splashes may enter the inside of the drape portion from the gap between the wall surface of the through hole and the insertion portion of the endoscope. In Patent Documents 2 to 4, there is a problem that it is difficult to maintain the airtightness between the tip of the drape portion and the endoscope. For this reason, the techniques disclosed in Patent Documents 2 to 4 have a problem that splashes may enter the inside of the drape portion from the gap between the tip of the drape portion and the endoscope.
  • the endoscope camera is covered by the connecting member and the drape portion. Furthermore, since the endoscope can be attached to and detached from the connecting member, the endoscope can be attached to and detached from the endoscope camera in a state where the endoscope camera is covered with the connecting member and the drape portion. Therefore, the above problem is unlikely to occur.
  • the central portion of the connecting member is simply composed of a transparent member, incident light may be reflected at this portion. If incident light is reflected by the connecting member, the quality of the captured image captured by the endoscope camera may deteriorate.
  • the present invention has been made in view of the above problems, and an object of the present invention is to prevent quality deterioration of a captured image while protecting an endoscope camera from droplets. It is an object of the present invention to provide a new and improved optical film, connecting member, drape for an endoscopic camera, endoscope apparatus, medical system, optical film manufacturing method, and connecting member manufacturing method.
  • a drape portion that covers a peripheral surface of an endoscopic camera and a tip of the drape portion are connected to connect the endoscope and the endoscopic camera.
  • a drape for an endoscopic camera comprising a connecting member, and an optical film provided on the connecting member, and having a reflection suppressing unit that suppresses reflection of incident light incident on the endoscopic camera from the endoscope An optical film is provided.
  • the reflection suppressing portion is a concavo-convex structure formed on the surface of the optical film, and the average period of the concavo-convex constituting the concavo-convex structure may be not more than the visible light wavelength.
  • the spectral reflectance of visible light may be 0.1 to 1.8%.
  • the reflection suppression unit may suppress fogging of the optical film.
  • the reflection suppressing portion may contain a hydrophilic resin.
  • It may contain polycarbonate resin.
  • the optical film has a base film and a reflection suppressing portion formed on the surface of the base film, and the base film may contain a polycarbonate resin.
  • the optical film is a connecting member that is provided at a tip of a drape portion that covers the peripheral surface of the endoscope camera and connects the endoscope and the endoscope camera.
  • a connecting member is provided.
  • the connecting member may be composed of an optical film.
  • the protective film may be a molded product having a shape along the surface shape of the connecting member.
  • an endoscope camera drape including a drape portion that covers a peripheral surface of the endoscope camera and the connecting member.
  • an endoscope apparatus including the drape for the endoscope camera.
  • a medical system including the above-described endoscope apparatus is provided.
  • an internal device includes a drape portion that covers a peripheral surface of the endoscope camera, and a connecting member that is provided at a tip of the drape portion and connects the endoscope and the endoscope camera.
  • the reflection suppressing portion As the reflection suppressing portion, an uneven structure is formed on the surface of the optical film, and the average period of the unevenness constituting the uneven structure may be equal to or less than the visible light wavelength.
  • the reflection suppressing portion may contain a hydrophilic resin.
  • the base film may contain a polycarbonate resin.
  • a method for manufacturing a connecting member that is provided at a tip of a drape portion that covers a peripheral surface of an endoscope camera and connects the endoscope and the endoscope camera.
  • a method for manufacturing a connecting member wherein the connecting member is produced using a film.
  • the connecting member may be produced by integrally molding the optical film into the shape of the connecting member.
  • the endoscope camera can be protected from splashes by the connecting member and the drape portion. Furthermore, the optical film provided on the connecting member includes a reflection suppressing unit that suppresses reflection of incident light incident on the endoscope camera from the endoscope. Therefore, it is possible to suppress quality degradation of the captured image.
  • the endoscope apparatus 100 includes an endoscope 110, a light irradiation cable 120, an endoscope camera 130, an endoscope camera cable 140, and an endoscope camera drape 200.
  • the endoscope 110 includes a base portion 111 and an insertion portion 112.
  • the light irradiation cable 120 is connected to the side surface of the base portion 111, and the insertion portion 112 is connected to the distal end portion.
  • the base unit 111 supplies the irradiation light supplied from the light irradiation cable 120 to the insertion unit 112.
  • the base unit 111 emits the imaging light supplied from the insertion unit 112 (that is, the irradiation light reflected in the patient's body) to the endoscope camera 130 side.
  • the arrow 120a in FIG. 1 shows the optical path of irradiation light
  • the arrow 110c shows the optical path of imaging light.
  • the rear end of the base portion 111 is detachable from the connecting member 220 of the endoscope camera drape 200.
  • the insertion portion 112 is a portion that is inserted into the patient's body. Irradiation light is emitted from the distal end of the insertion portion 112 and reflected inside the patient's body. Then, the irradiation light reflected in the patient's body, that is, the imaging light is incident on the distal end of the insertion portion 112 and reaches the base portion 111 through the insertion portion 112. Thereafter, the imaging light enters the endoscope camera 130 through the base portion 111 and the connecting member 220.
  • the light irradiation cable 120 supplies light generated from a light source (not shown) into the endoscope 110.
  • irradiation light is visible light, other types of light (for example, infrared rays) may be sufficient.
  • the shape of the endoscope 110 is not particularly limited.
  • the insertion portion 112 is a hard insertion portion, but may be a soft insertion portion.
  • the endoscopic camera 130 receives the imaging light incident from the endoscope 110 and generates a captured image.
  • the endoscope camera cable 140 transmits a captured image generated by the endoscope camera 130 to a display device or the like.
  • the endoscope camera 130 and the endoscope camera cable 140 are not particularly limited, and a known endoscope camera and endoscope camera cable can be arbitrarily applied.
  • connection member fitting portion 135 is provided at the distal end portion of the endoscope camera 130.
  • the connecting member fitting portion 135 is detachable from the endoscope camera fitting portion 222 of the connecting member 220.
  • the endoscope camera drape 200 includes a drape portion 210 and a connecting member 220.
  • the drape unit 210 is a cylindrical and flexible member and covers the peripheral surfaces of the endoscope camera 130 and the endoscope camera cable 140.
  • the drape unit 210 is sterilized.
  • the material of the drape portion 210 is not particularly limited, and may be composed of the same material as that of a known drape portion.
  • the drape unit 210 may be made of polyethylene or the like.
  • an accommodation part for accommodating the drape 200 for an endoscope camera may be connected to the rear end of the drape part 210.
  • a connecting member 220 is provided at the tip of the drape portion 210.
  • the connecting member 220 closes the opening at the tip of the drape portion 210.
  • the connecting member 220 includes an endoscope camera fitting part 222, an endoscope fitting part 225, and the optical film 10.
  • the endoscope camera fitting portion 222 is a member that holds the optical film 10 and is detachable from the connecting member fitting portion 135 as will be described later. Specifically, a through-hole 226 that penetrates the endoscope camera fitting portion 222 in the thickness direction is formed at the center portion of the endoscope camera fitting portion 222 (specifically, the portion through which the imaging light passes). Is formed. Note that the shape of the through-hole 226 in plan view (that is, the cross-sectional shape perpendicular to the thickness direction of the endoscope camera fitting portion 222) may be a circle, a rectangle, or another shape. Good. A concave groove 224 is formed in the wall surface 223 a of the through hole 226.
  • the concave groove 224 is formed over the entire circumferential length of the wall surface 223a. Then, the optical film 10 is fitted in the concave groove 224. Thereby, the endoscope camera fitting part 222 holds the optical film 10. Note that the method of holding the optical film 10 by the endoscope camera fitting unit 222 is not limited to this example. For example, the optical film 10 may be welded to the endoscope camera fitting portion 222.
  • the endoscope camera fitting portion 222 can be attached to and detached from the connecting member fitting portion 135.
  • the structure for making the connecting member fitting portion 135 and the endoscope camera fitting portion 222 detachable is not particularly limited.
  • a convex portion for fitting is formed on the outer peripheral surface 223b of the endoscope camera fitting portion 222, and a concave groove that fits the convex portion is formed on the inner peripheral surface 135a of the connecting member fitting portion 135.
  • the outer peripheral surface 223b of the endoscope camera fitting portion 222 may be perpendicular to the outer peripheral bottom surface portion 225a of the endoscope fitting portion 225, but toward the connecting member fitting portion 135 side. It is preferable to incline slightly inward (that is, toward the center side of the connecting member 220). In this case, the connection member 220 and the endoscope camera 130 can be easily attached and detached.
  • the inclination angle of the outer peripheral surface 223b (that is, the angle formed between the outer peripheral surface 223b and the outer peripheral bottom surface portion 225a of the endoscope fitting portion 225) is preferably about 80 to 90 °, for example.
  • the endoscope fitting portion 225 is provided on the surface of the endoscope camera fitting portion 222 on the endoscope 110 side.
  • the endoscope fitting portion 225 is a concave member and can be attached to and detached from the base portion 111 of the endoscope 110.
  • the structure for making the endoscope fitting portion 225 and the base portion 111 detachable is not particularly limited.
  • a concave groove for fitting may be formed on the inner peripheral surface 225 b of the endoscope fitting portion 225, and a convex portion that fits into the concave groove may be formed on the outer peripheral surface of the base portion 111.
  • the drape portion 210 is connected to the outer peripheral bottom surface portion 225a of the endoscope fitting portion 225.
  • the material which comprises the endoscope camera fitting part 222 and the endoscope fitting part 225 is not specifically limited, You may comprise with the material similar to a well-known connection member.
  • the endoscope camera fitting part 222 and the endoscope fitting part 225 may be made of polyethylene or the like. Of course, you may be comprised with the material of the same kind as the optical film 10.
  • the optical film 10 is held by the endoscope camera fitting portion 222.
  • the optical film 10 is disposed on the central portion of the connecting member 220, that is, on the optical path of the imaging light. Further, on both the front and back surfaces of the optical film 10, a reflection suppressing portion 12 described later is formed.
  • the reflection suppression unit 12 suppresses reflection of incident light (that is, imaging light) that enters the endoscope camera 130 from the endoscope 110. Thereby, the endoscopic camera 130 can generate a clearer captured image. In other words, in this embodiment, quality degradation of the captured image can be suppressed.
  • the drape portion 210 and the connecting member 220 of the endoscope camera drape 200 can cover the endoscope camera 130 and the endoscope camera cable 140 regardless of the attachment / detachment state of the endoscope 110. Therefore, the drape 200 for an endoscope camera can protect the endoscope camera 130 and the endoscope camera cable 140 from splashes regardless of whether the endoscope 110 is attached or detached.
  • connection member 220 is not restricted to the structure mentioned above. That is, the connecting member 220 may be anything as long as it has the following characteristics. (1) The opening at the tip of the drape portion 210 is closed. (2) The endoscope 110 and the endoscope camera 130 can be attached and detached. (3) The optical film 10 is disposed on the optical path of the imaging light.
  • the endoscope camera fitting part 222 and the endoscope fitting part 225 of the connecting member 220 are produced by a known molding method.
  • the optical film 10 is manufactured by the manufacturing method mentioned later.
  • the connecting member 220 is manufactured by fitting the optical film 10 into the concave groove 224 of the endoscope camera fitting portion 222.
  • the connecting member 220 and the tip of the drape portion 210 are connected (for example, welded).
  • the endoscope camera drape 200 is manufactured through the above steps.
  • the exposed surface of the optical film 10 on the endoscope 110 side (that is, the surface facing the endoscope 110) is covered with the protective film 300.
  • the protective film 300 does not necessarily need to have a fog prevention function.
  • the protective film 300 has a reflection suppressing function equivalent to or higher than that of the optical film 10.
  • Examples of a method for enhancing the reflection suppressing function of the protective film 300 include a method of providing an uneven structure on the protective film 300 and making the uneven pitch smaller than the uneven pitch of the reflection suppressing portion 12.
  • the protective film 300 makes it difficult for the reflection suppressing function of the optical film 10 to be hindered. Therefore, even when the optical film 10 is covered with the protective film 300, the reflection suppressing function of the optical film 10 can be more accurately evaluated. Therefore, the quality (specifically, the reflection suppression function and cleanliness) of the endoscope camera drape 200 can be improved more stably.
  • the protective film 300 may be colored. In this case, it is possible to more reliably prevent forgetting to remove the protective film 300 when using the drape 200 for an endoscope camera.
  • the connecting member 220 is an integrally molded product of the optical film 10. Therefore, the connecting member 220 is composed of the optical film 10.
  • the imaging light passes through the central portion 10a of the connecting member 220.
  • the manufacturing cost of the connecting member 220 can be reduced.
  • rattling may occur between the optical film 10 and the groove 224. And when such shakiness arises, position shift, inclination, etc. of the optical film 10 may arise.
  • the optical film 10 is displaced, tilted, or the like, the quality of the captured image may be deteriorated.
  • the optical film 10 is less likely to be displaced, tilted, etc., so that the quality of the captured image can be further improved.
  • the airtightness by the connecting member 220 can be further increased.
  • the method of integrally forming the connecting member 220 is not particularly limited, but from the viewpoint of suppressing damage to the reflection suppressing portion 12, vacuum molding or pressure molding is preferable. Further, the outer peripheral surface 223b of the endoscope camera fitting portion 222 may be undulated during vacuum forming or pressure forming. Therefore, the endoscope camera fitting part 222 may be made larger than the actual size, and then the endoscope camera fitting part 222 may be trimmed.
  • the protective film 300 is a molded product having a shape along the surface shape of the connecting member 220.
  • the protective film 300 includes an inner peripheral bottom surface 225c of the endoscope fitting portion 225, a surface on the endoscope 110 side of the endoscope camera fitting portion 222, and the endoscope 110 side of the central portion 10a. It has a shape along the shape of the surface.
  • the molding method of the protective film 300 is not particularly limited, and any molding method may be used as long as it is a conventional molding method.
  • the function of the protective film 300 is preferably the same as that of the first modification. In FIG.
  • the connecting member 220 is an integrally molded product according to the second modification.
  • the protective film 300 may cover the connecting member 220 shown in FIG.
  • you may cover the connection member 220 which concerns on a 2nd modification with the protective film 300 which concerns on a 1st modification.
  • the through hole 226 of the connecting member 220 is closed by the closing portion 10b.
  • the closing part 10b is integrally formed with the endoscope camera fitting part 222 and the endoscope fitting part 225.
  • the connecting member 220 is made of a transparent material.
  • the material having transparency a material constituting the base film 11 to be constituted can be mentioned.
  • the method of integrally forming the connecting member 220 may be the same as in the second modification.
  • the optical film 10 is affixed on the front and back both surfaces of the obstruction
  • the optical film 10 is attached to the closing portion 10b with, for example, a transparent adhesive (for example, a double-sided tape).
  • a transparent adhesive for example, a double-sided tape.
  • the optical film 10 may be provided only in any one of the front and back both surfaces of the obstruction
  • the endoscope apparatus 100 shown in FIGS. 1 to 5 can be applied to any medical system.
  • the endoscope apparatus 100 can be applied to a medical system provided with an operating table, a display device, and the like.
  • the endoscope device 100 is used by connecting the endoscope camera cable 140 to the display device.
  • the optical film 10 is a member that suppresses reflection of imaging light.
  • the optical film 10 includes a base film 11 and a reflection suppressing unit 12.
  • the base film 11 is made of a material having at least transparency.
  • the material which comprises the base film 11 will not be restrict
  • a material which comprises the base film 11 a plastic material etc. are mentioned, for example.
  • methyl methacrylate (co) polymer for example, methyl methacrylate (co) polymer, polycarbonate, triacetyl cellulose, polyethylene, polyethylene terephthalate, polyethylene naphthalate, polystyrene, styrene (co) polymer, Methyl methacrylate-styrene copolymer, polymethyl methacrylate, cellulose diacetate, cellulose triacetate, cellulose acetate butyrate, polyvinyl alcohol, polyester, polyamide, polyimide, polyethersulfone, cycloolefin, polysulfone, polypropylene, polymethylpentene, poly Examples include vinyl chloride, polyvinyl acetal, polyether ketone, polyurethane, and glass.
  • a particularly preferred material is polycarbonate.
  • polycarbonate By configuring the base film 11 with polycarbonate, the transparency of the base film 11 and thus the optical film 10 can be further enhanced.
  • Polycarbonate is also a preferred material from the viewpoints of processability, impact resistance, and versatility.
  • the base film 11 is made of the above plastic material
  • the base film 11 is produced by a method such as stretching the plastic material or diluting the plastic material into a film and drying it.
  • the thickness of the base film 11 is not particularly limited, and may be appropriately determined according to characteristics (for example, durability) required for the connecting member 220.
  • the “film” in the present embodiment includes “sheet”, “plate”, and the like.
  • the reflection suppressing unit 12 is a concavo-convex structure formed on the surface (here, both front and back surfaces) of the optical film 10.
  • the reflection suppression unit 12 is not limited to this example, and any reflection suppression unit 12 may be used as long as it has a function of suppressing reflection of imaging light.
  • the reflection suppressing portion 12 includes a plurality of convex portions 12 a that are convex in the film thickness direction of the base film 11 and a plurality of concave portions 12 b that are concave in the film thickness direction of the base film 11.
  • the convex portions 12 a and the concave portions 12 b are periodically arranged on the base film 11.
  • the convex portions 12a and the concave portions 12b are arranged in a staggered pattern.
  • the convex portions 12a and the concave portions 12b may be arranged in other arrangement patterns.
  • the convex portions 12a and the concave portions 12b may be arranged in a rectangular lattice shape.
  • the convex part 12a and the recessed part 12b may be arrange
  • the shape of the convex portion 12a and the concave portion 12b is not particularly limited.
  • the shape of the convex portion 12a and the concave portion 12b may be, for example, a cone shape, a column shape, or a needle shape.
  • the shape of the recessed part 12b means the shape formed by the inner wall face of the recessed part 12b.
  • the average period of the irregularities of the reflection suppressing portion 12 is not more than a visible light wavelength (for example, 830 nm or less), preferably 100 nm or more and 350 nm or less, and more preferably 150 nm or more and 280 nm or less. Therefore, the reflection suppressing unit 12 has a so-called moth-eye structure.
  • a visible light wavelength for example, 830 nm or less
  • the average period is less than 100 nm, formation of the reflection suppressing portion 12 may be difficult, which is not preferable.
  • the average period exceeds 350 nm, a visible light diffraction phenomenon may occur, which is not preferable.
  • the average period of the reflection suppressing portion 12 is an arithmetic average value of the distances between the adjacent convex portions 12a and the concave portions 12b (so-called uneven pitch).
  • the shape of the reflection suppressing unit 12 can be observed with, for example, a scanning electron microscope (SEM) or a cross-sectional transmission electron microscope (cross-section TEM).
  • the calculation method of an average period is as follows, for example. That is, a plurality of combinations of adjacent concave portions 12b and a combination of adjacent convex portions 12a are picked up, and these distances are measured.
  • the distance between the convex parts 12a should just be the distance between the vertices of the convex part 12a.
  • the distance between the recesses 12b may be a distance between the center points of the recesses 12b. Then, the average period may be calculated by arithmetically averaging the measured values.
  • the reflection suppressing portion 12 is formed on both surfaces of the base film 11, but it may be formed on at least one surface. Further, the height of the convex portion 12a of the reflection suppressing portion 12 may be about 180 to 270 nm, preferably 200 to 250 nm. The height of the convex portion 12a can be observed, for example, by a cross-sectional SEM.
  • the reflection suppression unit 12 is made of a cured product of a curable resin.
  • the cured product of the curable resin is required to have at least transparency.
  • the refractive index of the cured product of the curable resin is preferably about the same as that of the base film 11. In this case, since the internal reflection of the optical film 10 can be suppressed, the quality degradation of the captured image can be more reliably suppressed.
  • the curable resin contains a polymerizable compound and a curing initiator.
  • the polymerizable compound is a resin that is cured by being polymerized with a curing initiator.
  • the curable resin is preferably a hydrophilic resin.
  • the reflection suppressing unit 12 can further suppress fogging of the optical film 10. That is, the reflection suppressing unit 12 has a concavo-convex structure in which the concavo-convex pitch is equal to or less than the visible light wavelength, and thus has a higher fog suppression function than a flat film. That is, the reflection suppression unit 12 also has a function as a fog suppression unit.
  • the curable resin is preferably a hydrophilic resin in order to further enhance the fog suppression function of the reflection suppressing unit 12.
  • the humidity inside the endoscope camera drape 200 may increase depending on the usage environment of the endoscope apparatus 100.
  • the humidity inside the endoscope camera drape 200 may increase due to a change in the temperature and humidity environment of the operating room. Further, even in an operation using water, the humidity inside the endoscope camera drape 200 may increase.
  • the internal humidity of the endoscope camera drape 200 increases, the surface of the optical film 10 is likely to become cloudy. If the surface of the optical film 10 is cloudy or dew condensation occurs, the quality of the captured image may be deteriorated. Therefore, the optical film 10 may be required to have a high fog suppression function. Therefore, the curable resin is preferably a hydrophilic resin.
  • the polymerizable compound is preferably a hydrophilic monomer (or an oligomer or prepolymer made of these hydrophilic monomers).
  • hydrophilic monomer examples include polyoxyalkyl-containing (meth) acrylate, quaternary ammonium salt-containing (meth) acrylate, tertiary amino group-containing (meth) acrylate, sulfonic acid group-containing monomer, carboxylic acid group-containing monomer, phosphorus Examples thereof include acid group-containing monomers and phosphonic acid group-containing monomers.
  • (meth) acrylate means acrylate or methacrylate. The same applies to (meth) acryloyl and (meth) acryl.
  • polyoxyalkyl-containing (meth) acrylate examples include a monohydric compound obtained by reacting a polyhydric alcohol (polyol or polyhydroxy-containing compound) with a compound selected from the group consisting of acrylic acid, methacrylic acid, and derivatives thereof. Alternatively, polyacrylate, mono- or polymethacrylate, and the like can be given.
  • polyhydric alcohol examples include divalent alcohol, trivalent alcohol, and tetravalent or higher alcohol.
  • divalent alcohol examples include ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol having a number average molecular weight of 300 to 1,000, propylene glycol, dipropylene glycol, 1,3-propanediol, , 4-butanediol, 1,5-pentanediol, 1,6-hexanediol, neopentyl glycol, 2-ethyl-1,3-hexanediol, 2,2'-thiodiethanol, 1,4-cyclohexanedimethanol Etc.
  • trivalent alcohol examples include trimethylolethane, trimethylolpropane, pentaglycerol, glycerol, 1,2,4-butanetriol, 1,2,6-hexanetriol, and the like.
  • tetravalent or higher alcohol examples include pentaerythritol, diglycerol, dipentaerythritol, and the like.
  • Examples of the polyoxyalkyl-containing (meth) acrylate include polyethylene glycol (meth) acrylate and polypropylene glycol (meth) acrylate.
  • Examples of the polyethylene glycol (meth) acrylate include methoxypolyethylene glycol (meth) acrylate.
  • the molecular weight of the polyethylene glycol unit in the polyethylene glycol (meth) acrylate is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include 300 to 1,000.
  • methoxypolyethylene glycol (meth) acrylate various commercial products can also be used.
  • polyethylene glycol (meth) acrylate is preferable, and methoxypolyethylene glycol (meth) acrylate is more preferable.
  • Examples of quaternary ammonium salt-containing (meth) acrylates include (meth) acryloyloxyethyltrimethylammonium chloride, (meth) acryloyloxyethyldimethylbenzylammonium chloride, (meth) acryloyloxyethyldimethylglycidylammonium chloride, and (meth) acryloyl.
  • tertiary amino group-containing (meth) acrylates examples include N, N-dimethylaminoethyl (meth) acrylate, N, N-dimethylaminopropyl (meth) acrylamide, diethylaminopropyl (meth) acrylamide, 1,2,2 , 6,6-pentamethylpiperidyl (meth) acrylate, 2,2,6,6-tetramethylpiperidyl (meth) acrylate, and the like.
  • Examples of the sulfonic acid group-containing monomer include vinyl sulfonic acid, allyl sulfonic acid, vinyl toluene sulfonic acid, styrene sulfonic acid, and sulfonic acid group-containing (meth) acrylate.
  • Examples of the sulfonic acid group-containing (meth) acrylate include, for example, sulfoethyl (meth) acrylate, sulfopropyl (meth) acrylate, 2-acrylamido-2-methylpropanesulfonic acid, and terminal sulfonic acid-modified polyethylene glycol mono (meth) acrylate. Etc. These may form a salt. Examples of the salt include sodium salt, potassium salt, ammonium salt and the like.
  • Examples of the carboxylic acid group-containing monomer include acrylic acid and methacrylic acid.
  • Examples of the phosphoric acid group-containing monomer include (meth) acrylate having a phosphate ester.
  • the hydrophilic monomer is preferably a monofunctional hydrophilic monomer. There is no restriction
  • the content of the hydrophilic monomer in the curable resin is not particularly limited and may be appropriately selected depending on the intended purpose, but is 15% by mass to 99.9% by mass with respect to the total mass of the curable resin. Preferably, 20% by mass to 90% by mass is more preferable, and 25% by mass to 50% by mass is particularly preferable.
  • the polymer include polyvinyl alcohol, polyvinyl butyral, polyvinyl pyrrolidone, polyacrylamide, polyvinyl acetate, polyoxyalkylene and the like.
  • the curable resin is not limited to the above example.
  • the curable resin may be any resin as long as it is a resin used for producing a moth-eye structure.
  • an epoxy polymerizable compound etc. are mentioned, for example.
  • the epoxy polymerizable compound is a monomer, oligomer, or prepolymer having one or more epoxy groups in the molecule.
  • epoxy polymerizable compounds various bisphenol type epoxy resins (bisphenol A type, F type, etc.), novolac type epoxy resins, various modified epoxy resins such as rubber and urethane, naphthalene type epoxy resins, biphenyl type epoxy resins, phenol novolac type Examples thereof include epoxy resins, stilbene type epoxy resins, triphenolmethane type epoxy resins, dicyclopentadiene type epoxy resins, triphenylmethane type epoxy resins, and prepolymers thereof.
  • the curing initiator is a material that cures the curable resin.
  • the curing initiator include a thermosetting initiator and a photocuring initiator.
  • the curing initiator may be cured by some energy ray (for example, electron beam) other than heat and light.
  • the curing initiator is a thermosetting initiator
  • the curable resin is a thermosetting resin
  • the curing initiator is a photocuring initiator
  • the curable resin is a photocurable resin.
  • the curing initiator is preferably an ultraviolet curing initiator. Therefore, the curable resin is preferably an ultraviolet curable resin.
  • the ultraviolet curing initiator is a kind of photocuring initiator. Examples of the ultraviolet curing initiator include 2,2-dimethoxy-1,2-diphenylethane-1-one, 1-hydroxy-cyclohexyl phenyl ketone, and 2-hydroxy-2-methyl-1-phenylpropan-1-one. Etc.
  • additives may be added to the curable resin depending on the characteristics required of the optical film 10.
  • additives include inorganic fillers, organic fillers, leveling agents, surface conditioners, antifoaming agents, and the like.
  • the kind of the inorganic filler for example, SiO 2, TiO 2, ZrO 2, SnO 2, fine particles of metal oxides Al 2 O 3 or the like can be mentioned.
  • reflection suppressing portions 12 are formed on both surfaces of the base film 11.
  • the materials and characteristics of these reflection suppressing portions 12 may be the same or different. That is, what is necessary is just to determine the material and characteristic of these reflection suppression parts 12 according to the characteristic etc. which are requested
  • the reflection suppressing portion 12 formed on the surface facing the inside of the endoscope camera drape 200 among the front and back surfaces of the base film 11 may be made of a hydrophilic resin. This is because the humidity inside the endoscope camera drape 200 may increase as described above.
  • the optical film 10 since the optical film 10 according to the present embodiment includes the reflection suppressing portion 12, the optical film 10 can be provided with an excellent antireflection function. Specifically, when the imaging light is incident on the surface of the optical film 10, the refractive index in the traveling direction of the imaging light continuously changes. Note that when the refractive index changes abruptly at any part in the traveling direction of the imaging light, that part becomes an optical interface. Then, the imaging light is reflected at that portion. In this embodiment, since the reflection suppression part 12 is formed in the surface of the optical film 10, a refractive index changes continuously in this part. That is, the surface of the optical film 10 is unlikely to become an optical interface. For this reason, the optical film 10 hardly reflects the imaging light.
  • the spectral reflectance of visible light is preferably 0.1 to 1.8%.
  • the spectral reflectance of visible light can be 0.1 to 1.8%.
  • the total light transmittance is preferably 90% or more, and more preferably 95% or more.
  • the reflection suppressing portion 12 may be integrally formed with the base film 11.
  • the base film 11 is made of a material constituting the reflection suppressing portion 12, that is, a curable resin.
  • the manufacturing method in particular of an optical film is not restrict
  • the method for producing an optical film is roughly divided into a first step of preparing the base film 11 and a second step of forming the reflection suppressing portion 12 on the base film 11.
  • the method for preparing the master is not particularly limited.
  • the master may be produced by thermal lithography and dry etching.
  • a resist layer is first formed on the surface of a master substrate.
  • a concavo-convex structure is formed in the resist layer by irradiating the resist layer with laser light and then developing.
  • a concavo-convex structure is formed on the surface of the master base material by performing dry etching using the resist layer as a mask. Thereby, a master is produced.
  • the uneven structure of the resist layer may be transferred to the base film.
  • the master may be produced by an anodic oxidation method.
  • a method for manufacturing a master by an anodic oxidation method is disclosed in, for example, Japanese Patent Application Laid-Open No. 2013-142802. In this method, an uneven structure is formed on the surface of the master substrate by anodizing the master substrate. Thereby, a master is produced.
  • the pitch of the concavo-convex structure can be controlled by the formation voltage at the time of anodizing treatment.
  • Japanese Patent Laid-Open No. 2013-142802 two-step anodizing treatments with different formation voltages are performed, but this embodiment is not limited to this method.
  • the master may be produced by mechanically cutting the master base material.
  • a method of mechanically cutting a master substrate is disclosed in, for example, Japanese Patent Application Laid-Open No. 2004-223836. In this method, an uneven structure is formed on the surface of the master base material by cutting the surface of the master base material using a tool such as a diamond tool.
  • a tool such as a diamond tool.
  • an uneven structure is formed on the surface of the master base material by forming spiral grooves that intersect each other on the surface of the cylindrical master base material. The present embodiment is not limited to this method.
  • the shape of the master is not particularly limited, but may be a cylindrical shape or a columnar shape.
  • the optical film can be continuously produced by roll-to-roll.
  • the method for transferring the uneven structure of the master to the base film 11 is not particularly limited.
  • an uncured curable resin layer is formed on the base film 11, and the uneven structure of the master is transferred to the curable resin layer.
  • the curable resin layer may be cured.
  • the uneven structure of the master may be transferred directly to the base film 11.
  • the base film 11 is formed of, for example, a thermoplastic resin. Then, the base film 11 is softened by heating, and the uneven structure of the master is transferred to the base film 11.
  • the second step may be performed without using the master.
  • a resist layer is first formed on the base film 11.
  • the reflection suppressing portion 12 is formed on the base film 11 by exposing and developing the resist layer.
  • Example 1 An endoscope camera fitting part, an endoscope fitting part, and a closing part (that is, a part other than the optical film among the connecting members) having the structure shown in FIG. 5 were produced by vacuum molding. .
  • the material of the endoscope camera fitting portion, the endoscope fitting portion, and the closing portion was polyethylene terephthalate (PET).
  • PET polyethylene terephthalate
  • an optical film was produced by the following steps. That is, a polycarbonate film (Teijin Panlite) was prepared as a base film. Furthermore, a master having an inverted shape of the concavo-convex structure of the reflection suppressing portion was prepared.
  • the arrangement pattern of the concavo-convex structure of the reflection suppressing portion was a staggered lattice.
  • the uneven pitch of the reflection suppressing portion was set to 230 to 270 nm.
  • the height of the convex portion was set to 200 to 250 nm.
  • the reflection suppression part was formed in the front and back both surfaces of a base film using this original disk.
  • the ultraviolet curable acrylic resin composition by Toagosei Co., Ltd. was used as curable resin. This produced the optical film.
  • the optical film was affixed on both front and back surfaces of the closed part using a double-sided tape (LUCIACS 25 microns manufactured by Todenko).
  • the connection member which concerns on Example 1 was created by the above process.
  • Example 2 a connecting member according to Example 2 was manufactured by performing the same process as in Example 1 except that the optical film was attached only to the endoscope-side surface of the closed part.
  • Example 3 the connecting member according to Example 3 was manufactured by performing the same process as in Example 1 except that it was attached only to the surface on the endoscope camera side of the blocking part.
  • the connecting member according to the comparative example is obtained by performing the same process as in Example 1 except that the PET film in which the reflection suppressing portion is not formed is pasted on both surfaces of the closing portion instead of the optical film. Produced.
  • a member obtained by removing the optical film from the connecting member shown in FIG. 1 that is, a member where the optical film exists is hollow was used as the connecting member.
  • the optical characteristics of the connecting members according to Examples 1 to 3 and the comparative example were evaluated. Specifically, the total light transmittance (%) and haze value (%) of the central portion of the connecting member (that is, the portion where the optical film or PET film is attached) were evaluated.
  • the total light transmittance was measured according to JIS K7361, and the haze value was measured according to JIS K7136.
  • the total light transmittance is evaluated as VG (Very Good) when the total light transmittance is (95% or more), and G when the total light transmittance is (90% or more and less than 95%). It was evaluated as (Good), and B (Bad) was evaluated when the total light transmittance was (less than 90%).
  • the haze value As for the haze value, it is evaluated as VG (Very Good) when the haze value is (1.0% or less), and when the haze value is (over 1.0% and 1.2% or less), It was evaluated as (Good), and was evaluated as B (Bad) when the haze value was (over 1.2%).
  • Example 1 both the total light transmittance and the haze value were VG, and in Examples 2 and 3, both the total light transmittance and the haze value were G. On the other hand, in the comparative example, both the total light transmittance and the haze value were B.
  • the quality of the image displayed on the display device was visually evaluated.
  • the images obtained in Examples 1 to 3 and the comparative example were evaluated based on the image obtained in the reference example.
  • the image obtained in the comparative example was greatly deteriorated in quality compared to the image of the reference example.
  • the image of the comparative example was more blurred than the image of the reference example.
  • the blur of Example 1 was the smallest.

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Abstract

Le problème abordé par la présente invention est de fournir un film optique, un élément de connexion, un champ pour caméra endoscopique, un dispositif endoscopique, un système médical, un procédé de production de film optique et un procédé de fabrication d'élément de connexion qui soient nouveaux et améliorés, et qui permettent d'empêcher une détérioration de la qualité d'une image capturée tout en protégeant une caméra endoscopique contre les éclaboussures de produits. La solution de l'invention consiste, selon un aspect de la présente invention, en un film optique qui est fourni à un élément de connexion dans un champ pour caméra endoscopique pourvu d'une partie de champ destinée à recouvrir la surface périphérique de la caméra endoscopique, l'élément de connexion étant placé au bout de la partie de champ et connectant un endoscope et la caméra endoscopique. Le film optique comporte une unité de suppression de réflexion pour supprimer la réflexion de la lumière incidente entrant dans la caméra endoscopique depuis l'endoscope.
PCT/JP2016/080382 2015-10-14 2016-10-13 Film optique, élément de raccordement, champ pour caméra endoscopique, dispositif endoscopique, système médical, procédé de production de film optique et procédé de fabrication d'élément de connexion WO2017065217A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP16855470.7A EP3338616B1 (fr) 2015-10-14 2016-10-13 Film optique, élément de raccordement, champ pour caméra endoscopique, dispositif endoscopique, système médical, procédé de production de film optique et procédé de fabrication d'élément de connexion
CN201680060130.1A CN108135449B (zh) 2015-10-14 2016-10-13 光学薄膜及其制造方法、连接部件及其制造方法、内窥镜装置及相机用帷帘、医疗系统
US15/760,688 US11701195B2 (en) 2015-10-14 2016-10-13 Optical film, connecting member, endoscope camera drape, endoscope device, medical system, optical film production method, and connecting member production method
KR1020187012162A KR102644404B1 (ko) 2015-10-14 2016-10-13 광학 필름, 연결 부재, 내시경 카메라용 드레이프, 내시경 장치, 의료 시스템, 광학 필름의 제조 방법, 및 연결 부재의 제조 방법

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2015202793 2015-10-14
JP2015-202793 2015-10-14
JP2016201425A JP6800694B2 (ja) 2015-10-14 2016-10-13 光学フィルム、連結部材、内視鏡カメラ用ドレープ、内視鏡装置、医療システム、光学フィルムの製造方法、及び連結部材の製造方法
JP2016-201425 2016-10-13

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WO2017065217A1 true WO2017065217A1 (fr) 2017-04-20

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PCT/JP2016/080382 WO2017065217A1 (fr) 2015-10-14 2016-10-13 Film optique, élément de raccordement, champ pour caméra endoscopique, dispositif endoscopique, système médical, procédé de production de film optique et procédé de fabrication d'élément de connexion

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07204211A (ja) * 1994-01-14 1995-08-08 Olympus Optical Co Ltd 医療用滅菌カバー
US6123080A (en) * 1998-10-27 2000-09-26 Amba Medical Limited Drape
GB2483154A (en) * 2010-08-25 2012-02-29 P3 Medical Ltd A connector and drape

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07204211A (ja) * 1994-01-14 1995-08-08 Olympus Optical Co Ltd 医療用滅菌カバー
US6123080A (en) * 1998-10-27 2000-09-26 Amba Medical Limited Drape
GB2483154A (en) * 2010-08-25 2012-02-29 P3 Medical Ltd A connector and drape

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3338616A4 *

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