JP2020124330A - Eyelid opening tool - Google Patents

Eyelid opening tool Download PDF

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JP2020124330A
JP2020124330A JP2019017996A JP2019017996A JP2020124330A JP 2020124330 A JP2020124330 A JP 2020124330A JP 2019017996 A JP2019017996 A JP 2019017996A JP 2019017996 A JP2019017996 A JP 2019017996A JP 2020124330 A JP2020124330 A JP 2020124330A
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eyelid
ear
arm
line
ear end
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裕貴 田邊
Hirotaka Tanabe
裕貴 田邊
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Priority to JP2019017996A priority Critical patent/JP2020124330A/en
Priority to PCT/JP2019/027732 priority patent/WO2020161936A1/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F9/00Methods 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
    • A61F9/007Methods or devices for eye surgery

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  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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  • Life Sciences & Earth Sciences (AREA)
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  • Veterinary Medicine (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)

Abstract

To provide an eyelid opening tool capable of increasing an ear side visual field (eyelid opening width).SOLUTION: An eyelid opening tool 1 is configured so that a first ear end part EP1 is positioned on an opposite side of a second ear end part EP2 with respect to a first base line L1, the second ear end part EP2 is positioned on an opposite side of the first ear end part EP1 with respect to a second base line L2. Therefore, regardless of a separation distance between a first eyelid pressing part 2 and a second eyelid pressing part 3, the first ear end part EP1 is separated from a center line Lo relative to a first thong part NP1, and the second ear end part EP2 is separated from the center line Lo relative to a second thong part NP2. Since an ear side visual field (eyelid opening width) can be increased, a surgery approach from an ear side can be easily executed.SELECTED DRAWING: Figure 6

Description

本開示は、眼科手術時、又は眼内への薬剤投与時等に、上下の瞼を機械的(強制的)に開くための開瞼器に関する。 The present disclosure relates to an eyelid opening device for mechanically (forcibly) opening the upper and lower eyelids during ophthalmic surgery, drug administration into the eye, and the like.

例えば、特許文献1に記載の開瞼器は、上瞼及び下瞼それぞれに引っ掛けられるように係止される2つの瞼押部、各瞼押部を支持する2つのアーム部、及び2つの瞼押部を互いに離間させるためのU字状のバネ部等を備えている。 For example, in the eyelid opener described in Patent Document 1, two eyelid pushing portions that are locked so as to be hooked on the upper eyelid and the lower eyelid, two arm portions that support each eyelid pushing portion, and two eyelids. A U-shaped spring portion and the like for separating the pushing portions from each other are provided.

特許第5467665号公報Japanese Patent No. 5467665

特許文献1に記載の開瞼器を用いた眼科手術時においては、通常、患者の耳側にバネ部が位置するように開瞼器が当該患者に装着される。当該開瞼器では、構造上、耳側の視野(開瞼幅)を大きくすることが難しいため、耳側からの手術アプローチが難しいという問題がある。なお、当該問題は、医師である発明者が独自に気付いた技術的課題である。 During ophthalmologic surgery using the eyelid opening device described in Patent Document 1, the eyelid opening device is usually attached to the patient such that the spring portion is located on the ear side of the patient. With the eyelid opener, it is difficult to increase the visual field (open eyelid width) on the ear side due to its structure, and thus there is a problem that the surgical approach from the ear side is difficult. The problem is a technical problem that the inventor who is a doctor has uniquely noticed.

本開示は、上記点に鑑み、耳側の視野(開瞼幅)を大きくすることが可能な開瞼器の一例を開示する。 In view of the above points, the present disclosure discloses an example of an eyelid opening device capable of increasing the visual field (eyelid width) on the ear side.

上下の瞼を開くための開瞼器は、例えば、以下の構成要件のうち少なくとも1つを備えることが望ましい。
すなわち、当該構成要件は、仮想の中心線(Lo)に対して互いに略線対称となる位置に配置された第1瞼押部(2)及び第2瞼押部(3)であって、上瞼及び下瞼それぞれに係止される第1瞼押部(2)及び第2瞼押部(3)と、第1瞼押部(2)を支持する第1アーム部(4)と、第2瞼押部(3)を支持する第2アーム部(5)と、第1瞼押部(2)と第2瞼押部(3)とを互いに離間させるように、第1アーム部(4)及び第2アーム部(5)を変位させることが可能なアーム稼働機構(6)とを備え、第1耳端部(EP1)は、第1基準線(L1)に対して第2耳端部(EP2)と反対側に位置し、かつ、第2耳端部(EP2)は、第2基準線(L2)に対して第1耳端部(EP1)と反対側に位置することである。
The eyelid opening device for opening the upper and lower eyelids preferably includes, for example, at least one of the following constituent elements.
That is, the constituent requirements are the first eyelid pressing portion (2) and the second eyelid pressing portion (3) arranged at positions that are substantially line symmetrical to each other with respect to the virtual center line (Lo). A first eyelid pushing part (2) and a second eyelid pushing part (3) which are respectively locked to the eyelid and the lower eyelid, a first arm part (4) which supports the first eyelid pushing part (2), The second arm part (5) that supports the second eyelid pressing part (3), and the first arm part (4) so that the first eyelid pressing part (2) and the second eyelid pressing part (3) are separated from each other. ) And an arm operating mechanism (6) capable of displacing the second arm portion (5), and the first ear end portion (EP1) has a second ear end with respect to the first reference line (L1). The second ear end (EP2) is located on the side opposite to the portion (EP2), and the second ear end (EP2) is located on the side opposite to the first ear end (EP1) with respect to the second reference line (L2). ..

これにより、耳側の視野(開瞼幅)を大きくすることが可能となるため、耳側からの手術アプローチが容易に実施可能となる。
なお、上記においては、第1瞼押部(2)の端部のうち第1アーム部(4)側を第1耳端部(EP1)とし、第1瞼押部(2)の端部のうち当該第1耳端部(EP1)を挟んで第1アーム部(4)と反対側を第1鼻端部(NP1)とし、第2瞼押部(3)の端部のうち第2アーム部(5)側を第2耳端部(EP2)とし、第2瞼押部(3)の端部のうち当該第2耳端部(EP2)を挟んで第2アーム部(5)と反対側を第2鼻端部(NP2)とし、第1鼻端部(NP1)を通り、かつ、中心線(Lo)と平行な仮想線を第1基準線(L1)とし、第2鼻端部(NP2)を通り、かつ、中心線(Lo)と平行な仮想線を第2基準線(L2)としている。
This makes it possible to increase the visual field (open eyelid width) on the ear side, so that the surgical approach can be easily performed from the ear side.
In addition, in the above, the 1st arm part (4) side is made into the 1st ear end part (EP1) among the end parts of the 1st eyelid pushing part (2), and the end part of the 1st eyelid pressing part (2) is The first arm end (EP1) is sandwiched between the first arm part (4) and the opposite side of the first nose end (NP1), and the second arm of the second eyelid pushing part (3) is the second arm. The portion (5) side is the second ear end portion (EP2), and is opposite to the second arm portion (5) across the second ear end portion (EP2) among the end portions of the second eyelid pushing portion (3). The second nose end is the side that is the second nose end (NP2), the virtual line that passes through the first nose end (NP1) and is parallel to the center line (Lo) is the first reference line (L1). An imaginary line that passes through (NP2) and is parallel to the center line (Lo) is the second reference line (L2).

因みに、上記各括弧内の符号は、後述する実施形態に記載の具体的構成等との対応関係を示す一例であり、本開示は上記括弧内の符号に示された具体的構成等に限定されるものではない。 Incidentally, the reference numerals in the above parentheses are examples showing the correspondence with the specific configurations and the like described in the embodiments described later, and the present disclosure is limited to the specific configurations and the like indicated by the reference numerals in the parentheses. Not something.

第1実施形態に係る開瞼器を示す図である。It is a figure which shows the eyelid opening device which concerns on 1st Embodiment. 第1実施形態に係る開瞼器の装着状態を示す図である。It is a figure which shows the mounting state of the eyelid opening device which concerns on 1st Embodiment. 第1実施形態に係る開瞼器を示す図である。It is a figure which shows the eyelid opening device which concerns on 1st Embodiment. 第1実施形態に係る開瞼器を示す図である。It is a figure which shows the eyelid opening device which concerns on 1st Embodiment. 第1実施形態に係る開瞼器を示す図である。It is a figure which shows the eyelid opening device which concerns on 1st Embodiment. 第1実施形態に係る開瞼器を示す図である。It is a figure which shows the eyelid opening device which concerns on 1st Embodiment.

以下の「発明の実施形態」は、本開示の技術的範囲に属する実施形態の一例を示すものである。つまり、特許請求の範囲に記載された発明特定事項等は、下記の実施形態に示された具体的構成や構造等に限定されるものではない。 The following "embodiment of the invention" shows an example of an embodiment that belongs to the technical scope of the present disclosure. That is, the matters specifying the invention described in the claims are not limited to the specific configurations and structures shown in the following embodiments.

なお、各図に付された方向を示す矢印及び斜線等は、各図相互の関係及び各部材又は部位の形状を理解し易くするために記載されたものである。したがって、本開示に示された発明は、各図に付された方向に限定されるものではない。 It should be noted that the arrows and diagonal lines indicating the directions attached to the respective drawings are provided in order to facilitate understanding of the mutual relationships between the respective drawings and the shapes of the respective members or portions. Therefore, the invention shown in the present disclosure is not limited to the directions shown in the drawings.

少なくとも符号が付されて説明された部材又は部位は、「1つの」等の断りがされた場合を除き、少なくとも1つ設けられている。つまり、「1つの」等の断りがない場合には、当該部材は2以上設けられていてもよい。本開示に示された開瞼器は、少なくとも符号が付されて説明された部材又は部位等の構成要素を備える。 At least one member or portion described with reference numerals is provided, unless otherwise specified as "one" or the like. That is, if there is no notice such as "one", two or more members may be provided. The eyelid opener shown in the present disclosure includes at least components such as members or parts described with reference numerals.

(第1実施形態)
本実施形態は、眼科手術等に用いられる開瞼器に本開示に係る開瞼器の一例が適用されたものである。
(First embodiment)
In the present embodiment, an example of the eyelid opening device according to the present disclosure is applied to an eyelid opening device used for eye surgery or the like.

1.開瞼器の概要
開瞼器1は、図1に示されるように、第1瞼押部2、第2瞼押部3、第1アーム部4、第2アーム部5及びアーム稼働機構6等を少なくとも備える。
1. Overview of Eyelid Opener The eyelid opener 1 includes, as shown in FIG. 1, a first eyelid pressing portion 2, a second eyelid pressing portion 3, a first arm portion 4, a second arm portion 5, an arm operating mechanism 6, and the like. At least.

<瞼押部(まぶたおさえぶ)>
第1瞼押部2及び第2瞼押部3は、当該開瞼器1が患者に装着されたときに、上瞼及び下瞼それぞれに引っ掛かられるように係止される部位である。本実施形態に係る開瞼器1は、仮想の中心線Loに対して左右対称構造である。
<Eyelid press section>
The first eyelid pushing portion 2 and the second eyelid pushing portion 3 are portions that are locked so as to be caught by the upper eyelid and the lower eyelid when the eyelid opening device 1 is attached to a patient. The eyelid opener 1 according to the present embodiment has a bilaterally symmetrical structure with respect to the virtual center line Lo.

なお、本実施形態に係る開瞼器1は、例えば、患者の右眼に装着された場合には、第1瞼押部2が下瞼に係止され、第2瞼押部3が上瞼に係止されるように装着されることが望ましい(図2参照)。 In addition, for example, when the eyelid opening device 1 according to the present embodiment is attached to the right eye of a patient, the first eyelid pressing portion 2 is locked to the lower eyelid and the second eyelid pressing portion 3 is the upper eyelid. It is desirable that it be mounted so as to be locked to (see FIG. 2).

換言すれば、本実施形態に係る開瞼器1は、第1瞼押部2及び第2瞼押部3が患者の鼻側に位置し、アーム稼働機構6が患者の耳側に位置するように、当該患者に装着されることが望ましい(図2参照)。 In other words, in the eyelid opening device 1 according to the present embodiment, the first eyelid pushing part 2 and the second eyelid pushing part 3 are located on the nose side of the patient, and the arm operating mechanism 6 is located on the ear side of the patient. First, it is desirable that the patient be attached to the patient (see FIG. 2).

第1瞼押部2と第2瞼押部3とは、図1に示されるように、中心線Loに対して互いに略線対称となる位置に配置されている。なお、第1瞼押部2と第2瞼押部3とは、中心線Loに対して対称な形状である。 As shown in FIG. 1, the first eyelid pressing portion 2 and the second eyelid pressing portion 3 are arranged at positions that are substantially line-symmetric with respect to the center line Lo. The first eyelid pressing portion 2 and the second eyelid pressing portion 3 are symmetrical with respect to the center line Lo.

第1瞼押部2及び第2瞼押部3それぞれは、内側円弧分2A、3A、及び外側円弧分2B、3B等を有する。そして、内側円弧分2Aと外側円弧分2Bとは、滑らかな曲線部にて繋がれている。同様に、内側円弧分3Aと外側円弧分3Bとは、滑らかな曲線部にて繋がれている。 Each of the first eyelid pressing portion 2 and the second eyelid pressing portion 3 has an inner arc portion 2A, 3A, an outer arc portion 2B, 3B, and the like. The inner arc portion 2A and the outer arc portion 2B are connected by a smooth curved portion. Similarly, the inner arc portion 3A and the outer arc portion 3B are connected by a smooth curved portion.

つまり、本実施形態に係る第1瞼押部2及び第2瞼押部3それぞれは、滑らか閉曲線を描く形状である。なお、内側円弧分2A、3Aは、瞼に内側から接触する線状の部位である。外側円弧分2B、3Bは、瞼に内側から接触する線状の部位である。 That is, each of the first eyelid pressing portion 2 and the second eyelid pressing portion 3 according to this embodiment has a shape that draws a smooth closed curve. The inner arc portions 2A and 3A are linear portions that come into contact with the eyelids from the inside. The outer arc segments 2B and 3B are linear parts that come into contact with the eyelids from the inside.

<アーム部>
第1アーム部4は第1瞼押部2を支持する部位である。第2アーム部5は第2瞼押部3を支持する部位である。本実施形態に係る第1アーム部4及び第2アーム部5は、図3に示されるように、アーチ状に湾曲している。
<Arm part>
The first arm portion 4 is a portion that supports the first eyelid pushing portion 2. The second arm portion 5 is a portion that supports the second eyelid pushing portion 3. The 1st arm part 4 and the 2nd arm part 5 which concern on this embodiment are curved in arch shape, as shown in FIG.

なお、第1アーム部4は、曲率中心が当該第1アーム部4に対して内側円弧分2A側に位置するように湾曲している。第2アーム部5も同様に、曲率中心が当該第2アーム部5に対して内側円弧分3A側に位置するように湾曲している。 The first arm portion 4 is curved so that the center of curvature is located on the inner arc portion 2A side with respect to the first arm portion 4. Similarly, the second arm portion 5 is also curved so that the center of curvature is located on the inner arc side 3A side with respect to the second arm portion 5.

<アーム稼働機構>
アーム稼働機構6は、第1瞼押部2と第2瞼押部3とを互いに離間させるように、第1アーム部4及び第2アーム部5を変位させるための機構である。なお、本実施形態に係るアーム稼働機構6は、リンク機構6Aを利用したネジ式の機構である。
<Arm operating mechanism>
The arm operating mechanism 6 is a mechanism for displacing the first arm portion 4 and the second arm portion 5 so that the first eyelid pushing portion 2 and the second eyelid pushing portion 3 are separated from each other. The arm operating mechanism 6 according to the present embodiment is a screw type mechanism that uses the link mechanism 6A.

このため、医師は、ネジ6Bを回すことにより、図4及び図5に示されるように、第1瞼押部2と第2瞼押部3との離間距離を調節できる。つまり、医師は、第1瞼押部2及び第2瞼押部3を瞼に係止した状態で、ネジ6Bを回すことにより視野(開瞼幅)を調整できる。 Therefore, the doctor can adjust the separation distance between the first eyelid pressing portion 2 and the second eyelid pressing portion 3 by turning the screw 6B, as shown in FIGS. 4 and 5. That is, the doctor can adjust the visual field (open eyelid width) by turning the screw 6B in a state where the first eyelid pushing portion 2 and the second eyelid pushing portion 3 are locked to the eyelids.

2.第1瞼押部及び第2瞼押部の角度
本実施形態に係る開瞼器1では、図6に示されるように、第1耳端部EP1と第2耳端部EP2との離間距離が10mm以上、25mm以下となる状態において、以下の要件を満たす。
2. Angles of First Eyelid Pushing Section and Second Eyelid Pushing Section In the eyelid opening device 1 according to the present embodiment, as shown in FIG. 6, the separation distance between the first edge end EP1 and the second edge end EP2 is small. The following requirements are satisfied in a state of 10 mm or more and 25 mm or less.

すなわち、第1耳端部EP1は、第1基準線L1に対して第2耳端部EP2と反対側に位置し、第2耳端部EP2は、第2基準線L2に対して第1耳端部EP1と反対側に位置しているとともに、第1押瞼角度θ1が10°以上であり、かつ、第2押瞼角度θ2が10°以上である。 That is, the first ear end EP1 is located on the side opposite to the second ear end EP2 with respect to the first reference line L1, and the second ear end EP2 is the first ear with respect to the second reference line L2. It is located on the side opposite to the end portion EP1, the first eyelid angle θ1 is 10° or more, and the second eyelid angle θ2 is 10° or more.

耳端部EP1、EP2及び鼻端部NP1、NP2は、開瞼器1が患者に装着されたときに、上瞼又は下瞼の端片部に接触又は最も近接する部位である。換言すれば、耳端部EP1、EP2及び鼻端部NP1、NP2は、第1瞼押部2及び第2瞼押部3を構成する線状部材のうち屈曲した部位の頂部に相当する。 The ear end portions EP1 and EP2 and the nose end portions NP1 and NP2 are portions that are in contact with or closest to the end pieces of the upper eyelid or the lower eyelid when the eyelid opening device 1 is attached to the patient. In other words, the ear ends EP1 and EP2 and the nose ends NP1 and NP2 correspond to the tops of the bent portions of the linear members that form the first eyelid pressing portion 2 and the second eyelid pressing portion 3.

具体的には、第1耳端部EP1は、第1瞼押部2の端部のうち第1アーム部4側の端部である。第1鼻端部NP1は、第1瞼押部2の端部のうち当該第1耳端部EP1を挟んで第1アーム部4と反対側の端部である。第2耳端部EP2は、第2瞼押部3の端部のうち第2アーム部5側の端部である。 Specifically, the first ear end portion EP1 is an end portion of the end portion of the first eyelid pushing portion 2 on the first arm portion 4 side. The first nose end portion NP1 is an end portion of the end portion of the first eyelid pushing portion 2 opposite to the first arm portion 4 with the first ear end portion EP1 sandwiched therebetween. The second ear end portion EP2 is an end portion of the second eyelid pushing portion 3 on the second arm portion 5 side.

第2鼻端部NP2は、第2瞼押部3の端部のうち当該第2耳端部EP2を挟んで第2アーム部5と反対側の端部である。第1基準線L1は、第1鼻端部NP1を通り、かつ、中心線Loと平行な仮想線である。第2基準線L2は、第2鼻端部NP2を通り、かつ、中心線Loと平行な仮想線である。 The second nose end portion NP2 is an end portion of the end portion of the second eyelid pushing portion 3 opposite to the second arm portion 5 with the second ear end portion EP2 interposed therebetween. The first reference line L1 is an imaginary line that passes through the first nose end NP1 and is parallel to the center line Lo. The second reference line L2 is an imaginary line that passes through the second nose end portion NP2 and is parallel to the center line Lo.

そして、第1アーム部4の延び方向は、第1押線L3に対して傾いている。第2アーム部5の延び方向は、第2押線L4に対して傾いている。第1押線L3は、第1鼻端部NP1及び第1耳端部EP1を通る仮想線である。第2押線L4は、第2鼻端部NP2及び第2耳端部EP2を通る仮想線である。 The extending direction of the first arm portion 4 is inclined with respect to the first push line L3. The extending direction of the second arm portion 5 is inclined with respect to the second push line L4. The first push line L3 is an imaginary line that passes through the first nose end portion NP1 and the first ear end portion EP1. The second push line L4 is an imaginary line that passes through the second nose end portion NP2 and the second ear end portion EP2.

第1押瞼角度θ1は、第1押線L3と中心線Loとのなす角である。第2押瞼角度θ2は、第2押線L4と中心線Loとのなす角である。因みに、第1耳端部EP1と第2耳端部EP2との離間距離が10mm以上、25mm以下となるときには、第1アーム部4と第2アーム部5とのなす角θ3は、概ね20°より大きく、90°未満となる。 The first eyelid angle θ1 is an angle formed by the first push line L3 and the center line Lo. The second eyelid angle θ2 is an angle formed by the second push line L4 and the center line Lo. Incidentally, when the separation distance between the first ear end EP1 and the second ear end EP2 is 10 mm or more and 25 mm or less, the angle θ3 formed by the first arm portion 4 and the second arm portion 5 is approximately 20°. It is larger and is less than 90°.

図6は、耳端部EP1、EP2及び鼻端部NP1、NP2のうち少なくとも3つの端部を含む仮想平面に投影された開瞼器1を示す。つまり、上記離間距離、第1押瞼角度θ1及び第2押瞼角度θ2は、上記の仮想平面に投影された開瞼器1における寸法及び角度である。 FIG. 6 shows the eyelid opener 1 projected on a virtual plane including at least three ends of the ear ends EP1 and EP2 and the nose ends NP1 and NP2. That is, the separation distance, the first eyelid angle θ1 and the second eyelid angle θ2 are dimensions and angles in the eyelid opener 1 projected on the virtual plane.

3.本実施形態に係る開瞼器の特徴
本実施形態に係る開瞼器1では、少なくとも、以下の要件を満たしている。すなわち、第1耳端部EP1は、第1基準線L1に対して第2耳端部EP2と反対側に位置し、かつ、第2耳端部EP2は、第2基準線L2に対して第1耳端部EP1と反対側に位置している。
3. Features of Eyelid Opener According to This Embodiment The eyelid opener 1 according to this embodiment satisfies at least the following requirements. That is, the first edge end EP1 is located on the side opposite to the second edge end EP2 with respect to the first reference line L1, and the second edge end EP2 is positioned with respect to the second reference line L2. It is located on the side opposite to the one-ear end EP1.

換言すれば、第1押線L3は、第1基準線L1に対して交差する関係(平行ではない関係)であり、第2押線L4は、第2基準線L2に対して交差する関係(平行ではない関係)である。以下、当該位置関係を傾き要件という。 In other words, the first push line L3 has a relationship (non-parallel relationship) with the first reference line L1 and the second push line L4 has a relationship (cross relationship) with the second reference line L2. The relationship is not parallel). Hereinafter, the positional relationship is referred to as a tilt requirement.

これにより、第1瞼押部2と第2瞼押部3との離間距離によらず、第1耳端部EP1が第1鼻端部NP1より中心線Loから離間した状態となり、かつ、第2耳端部EP2が第2鼻端部NP2より中心線Loから離間した状態となる(図4及び図5参照)。したがって、耳側の視野(開瞼幅)を大きくすることが可能となるため、耳側からの手術アプローチが容易に実施可能となる。 As a result, the first ear end EP1 is separated from the center line Lo from the first nose end NP1 regardless of the distance between the first eyelid pressing portion 2 and the second eyelid pressing portion 3, and The two-ear end portion EP2 is in a state of being separated from the center line Lo from the second nose end portion NP2 (see FIGS. 4 and 5). Therefore, it is possible to increase the visual field (open eyelid width) on the ear side, so that the surgical approach from the ear side can be easily performed.

(その他の実施形態)
上述の実施形態に係るアーム稼働機構6はネジ式であった。しかし、本開示はこれに限定されるものではない。すなわち、当該開示は、例えば、(a)アーム稼働機構6が略U字状に湾曲したバネ、又は(b)アーム稼働機構6が第1アーム部4及び第2アーム部5を平行移動させる構成の機構であってもよい。
(Other embodiments)
The arm operating mechanism 6 according to the above-described embodiment is a screw type. However, the present disclosure is not limited to this. That is, in the disclosure, for example, (a) the arm operating mechanism 6 is a spring curved in a substantially U shape, or (b) the arm operating mechanism 6 moves the first arm portion 4 and the second arm portion 5 in parallel. Mechanism may be used.

上述の実施形態では、第1アーム部4のうち第1瞼押部2側、及び第2アーム部5のうち第2瞼押部3側が屈曲していることにより、傾き要件を満たす開瞼器であった。しかし、本開示はこれに限定されるものではない。 In the above-described embodiment, since the first eyelid pushing portion 2 side of the first arm portion 4 and the second eyelid pushing portion 3 side of the second arm portion 5 are bent, the eyelid opening device that satisfies the inclination requirement. Met. However, the present disclosure is not limited to this.

すなわち、当該開示は、例えば、第1アーム部4及び第2アーム部5が屈曲しておらず、第1瞼押部2の第1アーム部4に対する取付角度、及び第2瞼押部3の第2アーム部5に対する取付角度が傾き要件を満たすような構成の開瞼器であってもよい。 That is, according to the disclosure, for example, the first arm portion 4 and the second arm portion 5 are not bent, the attachment angle of the first eyelid pushing portion 2 with respect to the first arm portion 4, and the second eyelid pushing portion 3. The eyelid opening device may be configured so that the mounting angle with respect to the second arm portion 5 satisfies the inclination requirement.

上述の実施形態では、第1耳端部EP1と第2耳端部EP2との離間距離が10mm以上、25mm以下となる状態において、第1押瞼角度θ1が10°以上であり、かつ、第2押瞼角度θ2が10°以上であった。しかし、本開示はこれに限定されるものではない。 In the embodiment described above, the first eyelid angle θ1 is 10° or more and the first eyelid angle θ1 is 10° or more in the state where the separation distance between the first edge end EP1 and the second edge end EP2 is 10 mm or more and 25 mm or less, and 2 The eyelid angle θ2 was 10° or more. However, the present disclosure is not limited to this.

すなわち、当該開示は、例えば、離間距離が15mm以上、25mm以下となる状態において、第1押瞼角度θ1が10°以上であり、かつ、第2押瞼角度θ2が10°以上であってもよい。 That is, in the present disclosure, for example, even when the separation distance is 15 mm or more and 25 mm or less, the first eyelid angle θ1 is 10° or more and the second eyelid angle θ2 is 10° or more. Good.

上述の実施形態では、第1押瞼角度θ1が10°以上であり、かつ、第2押瞼角度θ2が10°以上であった。しかし、本開示はこれに限定されるものではない。すなわち、当該開示は、例えば、第1押瞼角度θ1が5°以上であり、かつ、第2押瞼角度θ2が5°以上であってもよい。 In the above-described embodiment, the first eyelid angle θ1 is 10° or more and the second eyelid angle θ2 is 10° or more. However, the present disclosure is not limited to this. That is, in the disclosure, for example, the first eyelid angle θ1 may be 5° or more and the second eyelid angle θ2 may be 5° or more.

上述の実施形態に係る第1瞼押部2及び第2瞼押部3は、線状の部材が閉曲線を描くような形状であった。しかし、本開示はこれに限定されるものではない。すなわち、当該開示は、例えば、(a)第1瞼押部2及び第2瞼押部3が湾曲した薄板材にて構成された開瞼器、又は(b)第1瞼押部2及び第2瞼押部3が開曲線状を描くように構成された開瞼器等であってもよい。 The first eyelid pressing portion 2 and the second eyelid pressing portion 3 according to the above-described embodiment are shaped such that the linear member draws a closed curve. However, the present disclosure is not limited to this. That is, the disclosure is, for example, (a) an eyelid opening device in which the first eyelid pressing portion 2 and the second eyelid pressing portion 3 are formed of a curved thin plate material, or (b) the first eyelid pressing portion 2 and the second eyelid pressing portion 2 It may be an eyelid opening device or the like in which the second eyelid pushing portion 3 is configured to draw an open curved shape.

上述の実施形態に係る開瞼器1は、吸引機能を備えていない開瞼器であった。しかし、本開示はこれに限定されるものではない。すなわち、当該開示は、例えば、吸引機能を備える開瞼器であってもよい。 The eyelid opening device 1 according to the above-described embodiment is an eyelid opening device that does not have a suction function. However, the present disclosure is not limited to this. That is, the disclosure may be, for example, an eyelid opener having a suction function.

上述の実施形態において示された第1押瞼角度θ1、第2押瞼角度θ2、及び第1耳端部EP1と第2耳端部EP2との離間距離は、一例である。つまり、本開示はこれに限定されるものではない。また、第1押瞼角度θ1と第2押瞼角度θ2とが異なる角度であってもよい。つまり、開瞼器の構成は、中心線Loに対して非対称構造であってもよい。 The first eyelid angle θ1, the second eyelid angle θ2, and the separation distance between the first edge end EP1 and the second edge end EP2 shown in the above-described embodiment are examples. That is, the present disclosure is not limited to this. Further, the first eyelid angle θ1 and the second eyelid angle θ2 may be different. That is, the structure of the eyelid opener may be an asymmetric structure with respect to the center line Lo.

上述の実施形態では、第1瞼押部2及び第2瞼押部3の位置によらず、常に、傾き要件を満たす開瞼器であった。しかし、本開示はこれに限定されるものではない。すなわち、当該開示は、例えば、少なくとも開瞼時、つまり第1瞼押部2と第2瞼押部3とが予め決められた寸法以上に離間したときに傾き要件を満たす開瞼器であってもよい。 In the above-described embodiment, the eyelid opening device always satisfies the inclination requirement regardless of the positions of the first eyelid pressing portion 2 and the second eyelid pressing portion 3. However, the present disclosure is not limited to this. That is, the disclosure is, for example, an eyelid opening device that satisfies the inclination requirement at least when the eyelids are opened, that is, when the first eyelid pressing portion 2 and the second eyelid pressing portion 3 are separated by a predetermined dimension or more. Good.

さらに、本開示は、上述の実施形態に記載された開示の趣旨に合致するものであればよく、上述の実施形態に限定されるものではない。したがって、上述した複数の実施形態のうち少なくとも2つの実施形態が組み合わせられた構成、又は上述の実施形態において、図示された構成要件もしくは符号を付して説明された構成要件のうちいずれかが廃止された構成でもよい。 Furthermore, the present disclosure is not limited to the above-described embodiments, as long as it matches the spirit of the disclosure described in the above-described embodiments. Therefore, any one of the configuration in which at least two of the plurality of embodiments described above are combined, or any of the configuration requirements illustrated in the above-described embodiment or denoted by reference numerals is abolished. It may be configured as described above.

1… 開瞼器
2… 第1瞼押部
3… 第2瞼押部
4… 第1アーム部
5… 第2アーム部
6… アーム稼働機構
1... Eyelid opener 2... 1st eyelid pushing part 3... 2nd eyelid pushing part 4... 1st arm part 5... 2nd arm part 6... Arm operating mechanism

Claims (3)

上下の瞼を開くための開瞼器において、
仮想の中心線に対して互いに略線対称となる位置に配置された第1瞼押部及び第2瞼押部であって、上瞼及び下瞼それぞれに係止される第1瞼押部及び第2瞼押部と、
前記第1瞼押部を支持する第1アーム部と、
前記第2瞼押部を支持する第2アーム部と、
前記第1瞼押部と前記第2瞼押部とを互いに離間させるように、前記第1アーム部及び前記第2アーム部を変位させることが可能なアーム稼働機構とを備え、
前記第1瞼押部の端部のうち前記第1アーム部側を第1耳端部とし、前記第1瞼押部の端部のうち当該第1耳端部を挟んで前記第1アーム部と反対側を第1鼻端部とし、
前記第2瞼押部の端部のうち前記第2アーム部側を第2耳端部とし、前記第2瞼押部の端部のうち当該第2耳端部を挟んで前記第2アーム部と反対側を第2鼻端部とし、
前記第1鼻端部を通り、かつ、前記中心線と平行な仮想線を第1基準線とし、前記第2鼻端部を通り、かつ、前記中心線と平行な仮想線を第2基準線としたとき、
前記第1耳端部は、前記第1基準線に対して前記第2耳端部と反対側に位置し、かつ、前記第2耳端部は、前記第2基準線に対して前記第1耳端部と反対側に位置する開瞼器。
In the eyelid opener for opening the upper and lower eyelids,
A first eyelid pressing part and a second eyelid pressing part which are arranged at positions substantially line-symmetric to each other with respect to an imaginary center line, the first eyelid pressing part being locked to the upper eyelid and the lower eyelid respectively; A second eyelid pushing part,
A first arm portion that supports the first eyelid pushing portion,
A second arm portion that supports the second eyelid pushing portion,
An arm operating mechanism capable of displacing the first arm portion and the second arm portion so as to separate the first eyelid pushing portion and the second eyelid pushing portion from each other;
Of the end portions of the first eyelid pushing portion, the first arm portion side is the first ear end portion, and the first arm portion is sandwiched between the first ear end portions of the end portion of the first eyelid pushing portion. The opposite side to the first nose end,
Of the end portions of the second eyelid pushing portion, the second arm portion side is defined as a second ear end portion, and the second arm portion is sandwiched between the second ear end portions of the end portions of the second eyelid pushing portion. The opposite side to the second nose end,
An imaginary line that passes through the first nose end and is parallel to the center line is a first reference line, and an imaginary line that passes through the second nose end and is parallel to the center line is a second reference line. When
The first ear end is located opposite to the second ear end with respect to the first reference line, and the second ear end is the first end with respect to the second reference line. An eyelid opener located on the opposite side of the ear.
上下の瞼を開くための開瞼器において、
仮想の中心線に対して互いに略線対称となる位置に配置された第1瞼押部及び第2瞼押部であって、上瞼及び下瞼それぞれに係止される第1瞼押部及び第2瞼押部と、
前記第1瞼押部を支持する第1アーム部と、
前記第2瞼押部を支持する第2アーム部と、
前記第1瞼押部と前記第2瞼押部とを互いに離間させるように、前記第1アーム部及び前記第2アーム部を変位させることが可能なアーム稼働機構とを備え、
前記第1瞼押部の端部のうち前記第1アーム部側を第1耳端部とし、前記第1瞼押部の端部のうち当該第1耳端部を挟んで前記第1アーム部と反対側を第1鼻端部とし、
前記第2瞼押部の端部のうち前記第2アーム部側を第2耳端部とし、前記第2瞼押部の端部のうち当該第2耳端部を挟んで前記第2アーム部と反対側を第2鼻端部とし、
前記第1鼻端部を通り、かつ、前記中心線と平行な仮想線を第1基準線とし、前記第2鼻端部を通り、かつ、前記中心線と平行な仮想線を第2基準線とし、
前記第1鼻端部及び前記第1耳端部を通る仮想の第1押線と前記中心線とのなす角を第1押瞼角度とし、
前記第2鼻端部及び前記第2耳端部を通る仮想の第2押線と前記中心線とのなす角を第2押瞼角度としたとき、
前記第1耳端部と前記第2耳端部との離間距離が10mm以上、25mm以下となる状態において、
前記第1耳端部は、前記第1基準線に対して前記第2耳端部と反対側に位置し、かつ、前記第2耳端部は、前記第2基準線に対して前記第1耳端部と反対側に位置するとともに、前記第1押瞼角度が10°以上であり、かつ、前記第2押瞼角度が10°以上である開瞼器。
In the eyelid opener for opening the upper and lower eyelids,
A first eyelid pressing part and a second eyelid pressing part which are arranged at positions substantially line-symmetric to each other with respect to an imaginary center line, the first eyelid pressing part being locked to the upper eyelid and the lower eyelid A second eyelid pushing part,
A first arm portion that supports the first eyelid pushing portion,
A second arm portion that supports the second eyelid pushing portion,
An arm operating mechanism capable of displacing the first arm portion and the second arm portion so as to separate the first eyelid pushing portion and the second eyelid pushing portion from each other;
Of the end portions of the first eyelid pushing portion, the first arm portion side is the first ear end portion, and the first arm portion is sandwiched between the first ear end portions of the end portion of the first eyelid pushing portion. The opposite side to the first nose end,
Of the end portions of the second eyelid pushing portion, the second arm portion side is defined as a second ear end portion, and the second arm portion is sandwiched between the second ear end portions of the end portions of the second eyelid pushing portion. The opposite side to the second nose end,
An imaginary line that passes through the first nose end and is parallel to the center line is a first reference line, and an imaginary line that passes through the second nose end and is parallel to the center line is a second reference line. age,
An angle formed by a virtual first push line passing through the first nose end portion and the first ear end portion and the center line is defined as a first eyelid angle,
When an angle formed by the imaginary second push line passing through the second nose end and the second ear end and the center line is defined as a second eyelid angle,
In a state where the separation distance between the first ear end portion and the second ear end portion is 10 mm or more and 25 mm or less,
The first ear end is located opposite to the second ear end with respect to the first reference line, and the second ear end is the first end with respect to the second reference line. An eyelid opener located on the opposite side of the ear end, having the first eyelid angle of 10° or more and the second eyelid angle of 10° or more.
前記アーム稼働機構は、前記第1瞼押部と前記第2瞼押部とを互いに離間させるように、前記第1アーム部及び前記第2アーム部を回転変位させることが可能である請求項2に記載の開瞼器。 The arm operating mechanism is capable of rotationally displacing the first arm portion and the second arm portion such that the first eyelid pushing portion and the second eyelid pushing portion are separated from each other. Eyelid opener described in.
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