JP3412107B2 - Deformable intraocular lens insertion device - Google Patents
Deformable intraocular lens insertion deviceInfo
- Publication number
- JP3412107B2 JP3412107B2 JP16535794A JP16535794A JP3412107B2 JP 3412107 B2 JP3412107 B2 JP 3412107B2 JP 16535794 A JP16535794 A JP 16535794A JP 16535794 A JP16535794 A JP 16535794A JP 3412107 B2 JP3412107 B2 JP 3412107B2
- Authority
- JP
- Japan
- Prior art keywords
- intraocular lens
- tip
- optical
- protrusion
- shaft
- 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.)
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Description
【０００１】[0001]
【産業上の利用分野】この発明は、眼内に変形可能な眼
内レンズを挿入するための挿入器具に係り、とくに押出
し軸の先端部の形状を改良した、変形可能な眼内レンズ
の挿入器具に関するものである。BACKGROUND OF THE INVENTION This invention relates to an insertion tool for inserting a deformable intraocular lens into the eye, and especially improved shape of the front end portion of the pushing shaft, insertion of the deformable intraocular lens It concerns equipment.
【０００２】[0002]
【従来の技術】従来、白内障手術の際に摘出した水晶体
の代わりに人工の眼内レンズを挿入することは広く行わ
れている。１９４９年にリドレイ（Ｒｉｄｌｅｙ）が最
初に人の眼にポリメチルメタクリレート（ＰＭＭＡ）眼
内レンズを挿入して以来、白内障手術後の眼内レンズ移
植に伴う合併症について多くの眼科医が関心を示し、こ
の問題について取組んで来たが、現状では、その合併症
を大別すると、（ａ）術後炎症、（ｂ）後嚢混濁、
（ｃ）眼内レンズの偏位、（ｄ）術後乱視の４つになる
と考えられている。2. Description of the Related Art Heretofore, it has been widely practiced to insert an artificial intraocular lens in place of the crystalline lens extracted during cataract surgery. Since Ridley first inserted a polymethylmethacrylate (PMMA) intraocular lens into the human eye in 1949, many ophthalmologists have shown interest in the complications associated with intraocular lens implantation after cataract surgery. , I have been working on this problem, but at present, the main complications are (a) post-operative inflammation, (b) posterior capsule opacification,
It is believed that there will be four (c) intraocular lens deviations and (d) post-operative astigmatism.
【０００３】これらの合併症に対して、（ａ）術後炎症
については薬品の使用、眼内レンズの表面処理、生体適
合性の改善によって、（ｂ）後嚢混濁についてはＹＡＧ
レーザーによる治療によって、（ｃ）眼内レンズの偏位
については眼内レンズの支持部デザインによる支持性能
の向上などによって、それぞれ対応が可能である。しか
し、（ｄ）術後乱視については、手術の切開創の大きさ
および手術後の切開創の縫合によって生じるものであ
り、術後に眼鏡なしでよりよい視力を得るという目的に
対して著しい障害となる。そして、術後乱視は、術中の
ケラトメーターの使用、切開法や縫合法の工夫がされて
いるものの充分に解決できず、これは切開創の大きさに
比例するとされ、小さな切開創であるほど術後乱視の発
生が小さいと考えられる。Against these complications, (a) use of chemicals for post-operative inflammation, surface treatment of intraocular lens and improvement of biocompatibility, and (b) YAG for posterior capsule opacification.
The laser treatment and (c) the displacement of the intraocular lens can be dealt with by improving the support performance by the design of the support portion of the intraocular lens. However, (d) postoperative astigmatism is caused by the size of the surgical incision and the suturing of the incisional wound after the operation, which is a significant obstacle to the purpose of obtaining better visual acuity without glasses after the operation. Becomes And, postoperative astigmatism cannot be solved sufficiently though the use of an intraoperative keratometer and the incision method and the suturing method are devised, and this is said to be proportional to the size of the incision. Occurrence of posterior astigmatism is considered to be small.
【０００４】小さな切開創による手術に関しては、超音
波水晶体乳化吸引装置を用い、白濁した水晶体の除去
を、超音波チップにより、水晶体を破砕し、乳化、吸引
して行う、超音波水晶体乳化吸引術（ＰＥＡ）手術によ
って、約３〜４mmの切開創で水晶体の摘出を可能とし、
従来の白内障嚢外摘出術（ＥＣＣＥ）による水晶体摘出
時の切開創が約１０mmであるのに比べ、小さな切開創で
の手術が可能になっている。[0004] For surgery with a small incision, an ultrasonic phacoemulsification suction device is used to remove the cloudy crystalline lens by crushing the crystalline lens with an ultrasonic tip, emulsifying and sucking it. (PEA) surgery enables removal of the lens with an incision of about 3-4 mm,
Compared to the incision of the conventional cataract extracapsular resection (ECCE), which is about 10 mm at the time of lens extraction, surgery with a small incision is possible.
【０００５】しかし、従来の眼内レンズは、ガラスある
いは樹脂の硬い材料でつくられた光学部を有し、それら
の眼内レンズを眼内に挿入するには、光学部の直径より
大きな切開寸法が必要であるため、切開創が約 6.5mm以
上となり、超音波水晶体乳化吸引術によって小さな切開
創から水晶体を摘出しても、硬い光学部を有する眼内レ
ンズを挿入するには切開創の寸法を大きくする必要があ
った。However, the conventional intraocular lens has an optical part made of a hard material such as glass or resin, and in order to insert these intraocular lenses into the eye, an incision size larger than the diameter of the optical part. Since the incision is about 6.5 mm or more, even if the lens is removed from the small incision by ultrasonic phacoemulsification, the size of the incision can still be inserted to insert an intraocular lens with a hard optical part. Had to be larger.
【０００６】そこで、例えば特開昭５８−１４６３４６
号公報に示されているように、前述した小さな切開創か
ら挿入可能な眼内レンズが開発され、これらの眼内レン
が所定の記憶特性を有する変形可能な弾性体によって構
成されている。Therefore, for example, Japanese Patent Application Laid-Open No. 58-146346.
As shown in the publication, an intraocular lens that can be inserted from the aforementioned small incision has been developed, and these intraocular lenses are composed of a deformable elastic body having a predetermined memory characteristic.
【０００７】また、特開昭５８−１４６３４０号、特開
平４−２１２３５０号、特開平５−１０３８０３号、特
開平５−１０３８０８号、特開平４−３６８２２９号の
各公報に示されているように、変形可能な眼内レンズの
光学部を巻いたり、折曲げたり、伸ばしたり、折畳んだ
りして変形させることで、変形前の大きな形状から小さ
な形状にして、眼球に作成した小さな切開創から眼内レ
ンズを眼内に挿入できる挿入器具が開発され、これらの
挿入器具を用いることで、眼内レンズおよび眼内レンズ
の挿入方法の両方から約４mmの小さな切開創による手術
の可能性を見出している。Further, as disclosed in JP-A-58-146340, JP-A-4-212350, JP-A-5-103803, JP-A-5-103808, and JP-A-4-368229. , By transforming the optical part of the deformable intraocular lens by winding, bending, stretching, folding, and transforming it into a small shape from a large shape before deformation, from a small incision made on the eyeball We have developed an insertion tool that can insert an intraocular lens into the eye. By using these insertion tools, we have discovered the possibility of surgery with a small incision of about 4 mm from both the intraocular lens and the insertion method of the intraocular lens. ing.
【０００８】すなわち、図７に示すように、特願平５−
１７５３３０号（平成５年７月１５日出願）によってこ
の発明の出願人が提案した変形可能な眼内レンズ１があ
り、この眼内レンズは、所定の記憶特性を有する変形可
能な弾性材料で形成した円形の光学部２の外周部に、光
学部２と異種の可撓性材料で形成した１対の支持部３の
基部３ａを埋込み固着し、支持部３の線状の突出部３ｂ
を湾曲させ、２つの支持部３をこの光学部中心に対して
対称形に配置し、光学部２の外周に基部３ａの埋込み部
分を補強する突起２ａをそれぞれ設けたものや、図８に
示すように、図７と同様な記憶特性を有する材料からな
る光学部２の外周から光学部２を支える板状の前，後２
つの支持部４を光学部２の横断面直径の両端から台形に
近い形状に相対向させて突出させた従来公知ものもあっ
た。That is, as shown in FIG.
There is a deformable intraocular lens 1 proposed by the applicant of the present invention by No. 175330 (filed on July 15, 1993), and the intraocular lens is formed of a deformable elastic material having predetermined memory characteristics. The base portion 3a of the pair of supporting portions 3 made of a different kind of flexible material from the optical portion 2 is embedded and fixed to the outer peripheral portion of the circular optical portion 2 and the linear protruding portion 3b of the supporting portion 3 is formed.
Is curved, two support portions 3 are arranged symmetrically with respect to the center of the optical portion, and projections 2a for reinforcing the embedded portion of the base portion 3a are provided on the outer periphery of the optical portion 2, respectively, and FIG. As shown in FIG. 7, the plate-like front and rear portions 2 which support the optical portion 2 from the outer circumference of the optical portion 2 made of a material having the same memory characteristic as in FIG.
There is also a conventionally known one in which two supporting portions 4 are made to project from both ends of the cross-sectional diameter of the optical portion 2 so as to face each other in a shape close to a trapezoid.
【０００９】そして、図７，図８に示すものなど、光学
部２と支持部３または支持部４とからなり少なくとも光
学部が所定の記憶特性を有する変形可能な眼内レンズ１
を大きな形状から小さな形状に２つ折り状にするなど折
畳んで変形させ、円筒状などに形成した挿入筒に通して
眼球に作成した切開創から眼内レンズを眼内に入れるに
は、例えば特開平５−１０３８０８号公報に示された挿
入器具などを用いている。A deformable intraocular lens 1 having an optical part 2 and a supporting part 3 or a supporting part 4 at least the optical part having a predetermined memory characteristic, such as the one shown in FIGS.
To insert the intraocular lens into the eye from an incision made in the eyeball by folding it from a large shape to a small shape by folding it in two and passing it through an insertion tube formed into a cylindrical shape, The insertion instrument shown in Kaihei 5-103808 is used.
【００１０】前記挿入器具を用いて、変形可能な眼内レ
ンズを小さな切開創から挿入するには、挿入器具の包持
部材に設けたレンズ設置部を開き、この設置部に前記眼
内レンズを設置し、設置部を閉じることによって眼内レ
ンズを変形前の大きな形状から２つ折り状に折畳んで小
さな形状とし、設置部内に眼内レンズを設置する。その
後、挿入器具の押出し機構の手動操作によって、押出し
軸を前進させ、押出し軸の軸方向と直交する平坦な先端
面によって設置部内の眼内レンズを押出し、設置部の先
端側に連なる挿入筒内を通して、切開創に挿入した前記
挿入筒の先端から眼内に眼内レンズを挿入させている。In order to insert a deformable intraocular lens from a small incision using the insertion instrument, the lens installation portion provided in the holding member of the insertion instrument is opened, and the intraocular lens is attached to this installation portion. The intraocular lens is installed, and the installation part is closed to fold the intraocular lens from the large shape before deformation into a two-fold shape to form a small shape, and the intraocular lens is installed in the installation part. After that, the push-out shaft is moved forward by the manual operation of the push-out mechanism of the insertion tool, and the intraocular lens in the installation section is pushed out by the flat distal end surface orthogonal to the axial direction of the extrusion shaft, and inside the insertion tube connected to the distal end side of the installation section. The intraocular lens is inserted into the eye through the tip of the insertion tube inserted into the incision.
【００１１】[0011]
【発明が解決しようとする課題】前述した変形可能な眼
内レンズの挿入器具は、前記眼内レンズの挿入に際し
て、変形可能な眼内レンズを挿入器具の包持部材内で２
つ折り状など適宜の横断面形状に折畳んで小型にし、押
出し軸を前進させることで、その先端部によって、折畳
んだ眼内レンズを挿入筒内に通し、眼球に設けた小さな
切開創でも眼内に押出せるようにしている。SUMMARY OF THE INVENTION The above-mentioned deformable intraocular lens insertion device has a structure in which the deformable intraocular lens is inserted in the holding member of the insertion device when the intraocular lens is inserted.
By folding it into a suitable cross-sectional shape such as a folded shape to make it compact, and by pushing the pushing shaft forward, the folded intraocular lens is passed through the insertion tube by its tip, and even a small incision made in the eyeball It can be pushed inside.
【００１２】しかし、前記の挿入器具は、折畳んだ眼内
レンズを眼内に押出すことを考慮しているのみであり、
押出し軸の先端部の眼内レンズに接する先端面は押出し
軸の軸方向と直交する平面、あるいはこれに類似する形
状であったため、変形可能な眼内レンズの弾性材料から
なる支持部のうち、後側部分に位置する支持部に押出し
軸の先端面による外力が直接加えられ、この支持部が押
潰されて損傷する恐れがあるという問題点があった。However, the above-mentioned insertion device only considers pushing the folded intraocular lens into the eye,
Since the distal end surface of the extruding shaft, which is in contact with the intraocular lens, is a plane orthogonal to the axial direction of the extruding shaft or a shape similar thereto, among the supporting portions made of the elastic material of the deformable intraocular lens, There is a problem that an external force is directly applied to the support portion located at the rear side portion by the tip end surface of the pushing shaft, and the support portion may be crushed and damaged.
【００１３】また、押出し軸の先端部は、変形可能な眼
内レンズを確実に押出すために、押出す面積を挿入筒の
横断面の内面とほぼ等しい大きさにしているのみで、眼
内レンズを保持できないことにより、眼内レンズを挿入
する方向が定められず、眼内の所望の部位に変形可能な
眼内レンズを挿入することが困難であるという問題点が
あった。Further, in order to surely push out the deformable intraocular lens, the tip end portion of the push-out shaft has a pushing-out area of substantially the same size as the inner surface of the cross section of the insertion tube. Since the lens cannot be held, there is a problem in that the direction in which the intraocular lens is inserted is not determined and it is difficult to insert the deformable intraocular lens into a desired site in the eye.
【００１４】そして、所定の記憶特性を有する変形可能
な弾性材料からなる光学部と、光学部と異種の可撓性材
料からなる支持部とからなる変形可能な眼内レンズは、
眼内への挿入に際して、この眼内レンズの支持部が眼内
での固定強度の増強、および眼内での圧縮やその他の応
力を受けても光学部を光軸上に固定できるように、可撓
性を持たせるのに必要で、充分な硬さがある樹脂などの
材料を用い、線状でばね作用をもたせてある（図７参
照）。A deformable intraocular lens including an optical part made of a deformable elastic material having a predetermined memory characteristic and a support part made of a flexible material different from the optical part is
At the time of insertion into the eye, the support portion of this intraocular lens enhances the fixing strength in the eye, and the optical portion can be fixed on the optical axis even when receiving compression or other stress in the eye, A material such as a resin, which is necessary to have flexibility and has sufficient hardness, is used, and a linear spring function is provided (see FIG. 7).
【００１５】しかし、この変形可能な眼内レンズでは、
支持部が外力によって変形しやすく、眼内レンズの挿入
に際して、支持部を変形させてしまうと、眼内で光学部
を所定の位置に保持するという本来の機能を失う恐れが
ある。However, in this deformable intraocular lens,
The support portion is easily deformed by an external force, and if the support portion is deformed when the intraocular lens is inserted, the original function of holding the optical portion at a predetermined position in the eye may be lost.
【００１６】そこで、変形可能な眼内レンズを変形前の
大きな形状から小さな形状に折畳んで変形させ、眼球に
作成した小さな切開創から挿入できるように挿入器具の
挿入筒の円筒またはこれに類似した形状の先端部を介し
て、眼内レンズを眼内に挿入するために押出し機構の操
作によって押出し軸を前進させるが、押出し軸の先端部
による外力が、眼内レンズの後側部分の支持部に直接加
えられてこの支持部が変形することなく、光学部のみに
作用する形状に、押出し軸の先端部を形成することが提
案されている。Therefore, the deformable intraocular lens is deformed by folding it from a large shape before deformation to a small shape, so that the deformable intraocular lens can be inserted from a small incision made in the eyeball. The push-out shaft is advanced by operating the push-out mechanism to insert the intraocular lens into the eye through the tip end of the shaped shape, but the external force from the tip end of the push-out shaft is used to support the rear part of the intraocular lens. It has been proposed to form the extremity of the extruding shaft into a shape that acts only on the optical section without being deformed by being directly applied to the section and causing the support section to deform.
【００１７】しかし、この押出し軸の先端部の外径は、
折畳んだ眼内レンズの外径に対して小さいので、押出し
軸の先端部は、眼内レンズの光学部の折畳んだ外径より
中心側の全面に対して外力を加えることが不可能であ
り、折畳んだ光学部の中央部に存在する間隙に進入し、
押出し軸の前進による外力が光学部に確実に伝達されな
いだけではなく、眼内レンズが押出し軸の外周と前記挿
入筒の内周との間に挟み込まれて損傷する危険性があ
り、しかも、挿入箇所で眼内レンズを保持できないこと
で、眼内レンズは挿入する方向が定められず、眼内の所
望の部位に挿入することが困難であるという問題点があ
った。However, the outer diameter of the tip of this extrusion shaft is
Since it is smaller than the outer diameter of the folded intraocular lens, the tip of the extrusion shaft cannot apply an external force to the entire surface on the center side of the folded outer diameter of the optical part of the intraocular lens. Yes, enter the gap in the center of the folded optics,
Not only is the external force due to the forward movement of the push-out shaft not reliably transmitted to the optical section, but there is also the risk that the intraocular lens will be pinched between the outer circumference of the push-out shaft and the inner circumference of the insertion tube and damaged. Since the intraocular lens cannot be held at a portion, the insertion direction of the intraocular lens is not determined, and it is difficult to insert the intraocular lens at a desired portion of the eye.
【００１８】さらに、所定の記憶特性を有する変形可能
な弾性材料からなる光学部の前，後に板状の支持部をそ
れぞれ一体に突出させた変形可能な眼内レンズ（図８参
照）は、全体の厚さが薄く、支持部が光学部の横断面直
径の両端から前，後に台形に近い形状に突出しているた
め、眼内レンズを２つ折り状などに折畳んで、押出し軸
の先端部で挿入筒内を前進させる際に、押出し軸の軸方
向と直交する平坦なその先端面によって後側部分に位置
する支持部が折曲げられた形状に押潰され、この支持部
が損傷しやすかった。Further, the deformable intraocular lens (see FIG. 8) in which the plate-shaped supporting portions are integrally projected in front of and behind the optical portion made of a deformable elastic material having a predetermined memory characteristic is formed as a whole. Is thin, and the supporting part protrudes from both ends of the diameter of the cross section of the optical part in a shape close to a trapezoid in the front and back, so that the intraocular lens can be folded into two folds at the tip of the extrusion shaft. When the inside of the insertion cylinder was moved forward, the flat front end surface orthogonal to the axial direction of the pushing shaft crushed the support portion located in the rear portion into a bent shape, and this support portion was easily damaged. .
【００１９】この発明は、前述した問題点を解決して、
変形可能な眼内レンズを、押出し軸によって、損傷させ
ずに、眼内の所望の位置に挿入できる、眼内レンズの挿
入器具を提供することを目的としている。The present invention solves the above-mentioned problems,
An object of the present invention is to provide an intraocular lens insertion device that allows a deformable intraocular lens to be inserted into a desired position in the eye by an extrusion shaft without damage.
【００２０】[0020]
【課題を解決するための手段】請求項１の発明は、弾性
材料からなる光学部および１対の支持部を一体化し少な
くとも光学部が所定の記憶特性を有する変形可能な眼内
レンズを２つ折り状など適宜の横断面形状に折畳み小さ
な形状にして包持する包持部材と、この包持部材の先端
側に連なる挿入筒の先端から包持部材に包持した前記眼
内レンズを押出す押出し軸と、この押出し軸を前進させ
る押出し機構とを、器具本体に設け、前記押出し軸の回
動を拘束させた、変形可能な眼内レンズの挿入器具にお
いて、押出し軸の先端部の下部に、下面が前記挿入筒の
基端側部の下部内面に密接し、先端側から末端側に向か
って厚さが漸増する側面三角形状に眼内レンズ掬上げ用
突出部を形成したものである。According to a first aspect of the present invention, a deformable intraocular lens in which an optical portion made of an elastic material and a pair of supporting portions are integrated and at least the optical portion has a predetermined memory characteristic is folded in two. A wrapping member that folds into an appropriate cross-sectional shape such as a shape and wraps it in a small shape, and an pusher that pushes out the intraocular lens wrapped in the wrapping member from the tip of an insertion tube that is continuous with the tip end side of the wrapping member. A shaft and an extruding mechanism for advancing this extruding shaft are provided in the instrument body, and the rotation of the extruding shaft is constrained, in a deformable intraocular lens insertion instrument, below the tip of the extruding shaft, The lower surface of the insertion tube
Closely contact the inner surface of the lower part of the base end side, and
For lifting the intraocular lens in a triangular shape with a gradually increasing thickness
The protrusion is formed .
【００２１】請求項２の発明は、請求項１の発明による
眼内レンズの挿入器具において、眼内レンズは、所定の
記憶特性を有する変形可能な弾性材料からなる円形の光
学部と、光学部と異種の可撓性材料からなり光学部の外
周部に基部を埋込み固着した１対の支持部とを有し、光
学部の外周に支持部の基部を補強する突起を設けると共
に、光学部の前記突起から突出した支持部の線状の突出
部を湾曲させ、支持部光学部中心に対してを対称形と
し、押出し軸は、先端部の上部に前記眼内レンズの折畳
んだ光学部の後側部分に位置する一側部を支持する切欠
部を形成し、他側部に眼内レンズの折畳んだ光学部の後
側部分に位置する一側部を支持する切欠部を形成し、他
側部に後側部分に位置する前記突起を入れ、かつ後側部
分に位置する支持部の線状の突出部を通す切欠部を形成
し、前記上部の他側部前端で光学部の他側部を支持し、
上部間に密接して介在する先端突出部を設け、この先端
突出部と眼内レンズ掬上げ用突出部とを上下に対向さ
せ、この掬上げ用突出部によって眼内レンズの折畳んだ
光学部の後側部分を掬上げるようにしたものである。According to a second aspect of the invention, in the intraocular lens insertion device according to the first aspect of the invention, the intraocular lens has a circular optical part made of a deformable elastic material having a predetermined memory characteristic, and the optical part. And a pair of support parts made of different kinds of flexible materials and having a base part embedded and fixed to the outer peripheral part of the optical part. Protrusions for reinforcing the base part of the support part are provided on the outer periphery of the optical part, and The linear protrusion of the supporting portion protruding from the protrusion is curved to have a symmetrical shape with respect to the center of the supporting portion optical portion, and the pushing shaft is provided above the tip portion of the folded optical portion of the intraocular lens. Form a notch portion that supports one side portion located at the rear side portion, and form a notch portion that supports one side portion located at the rear side portion of the folded optical portion of the intraocular lens on the other side portion, The other side portion is provided with the protrusion located at the rear portion, and the support portion located at the rear portion. Forming a notch through which the linear protrusions, supports the other side of the optical portion at the other side front end of the upper,
A tip protrusion that closely intervenes between the upper portions is provided, and the tip protrusion and the projection for lifting the intraocular lens are made to face each other vertically, and the optical portion in which the intraocular lens is folded by the projection for lifting the intraocular lens. The rear part of the car is scooped up.
【００２２】請求項３の発明は、請求項１の発明による
眼内レンズの挿入器具において、眼内レンズは、所定の
記憶特性を有する変形可能な弾性材料からなり、円形の
光学部の前，後に板状の支持部をそれぞれ一体に突出さ
せ、押出し軸は、先端部の両側にそれぞれ切欠部を形成
し、これらの切欠部の末端に、眼内レンズの後側部分に
位置する支持部の後端を支持する支持面を形成し、前記
切欠部間の上部に、後側部分に位置する支持部の対向す
る側面の上部に密接してこれらの側面間に介在する先細
台形状の先端突出部を設け、この先端突出部と眼内レン
ズ掬上げ用突出部とを上下に対向させ、この掬上げ用突
出部によって眼内レンズの折畳んだ光学部の後側部と後
側部分に位置する支持部、またはこの支持部のみを掬上
げるようにしたものである。According to a third aspect of the invention, in the instrument for inserting an intraocular lens according to the first aspect of the invention, the intraocular lens is made of a deformable elastic material having a predetermined memory characteristic, and is provided in front of the circular optical part. After that, the plate-shaped support portions are integrally projected, and the push-out shaft has notches formed on both sides of the distal end portion, and at the ends of these notch portions, the support portions located at the rear portion of the intraocular lens are formed. A support surface for supporting the rear end is formed, and a tip of the tapered trapezoidal shape is formed in the upper part between the cutout parts so as to be in close contact with the upper part of the opposite side faces of the support part located in the rear part and to be interposed between these side faces. And the tip projection and the projection for lifting the intraocular lens are vertically opposed to each other, and are positioned on the rear side and the rear side of the folded optical part of the intraocular lens by the projection for lifting the intraocular lens. The support part to be used or only this support part is picked up. It is.
【００２３】[0023]
【作用】請求項１の発明による眼内レンズの挿入器具
は、包持部材に変形可能な眼内レンズを２つ折り状、Ｗ
字状、Ｍ字状など適宜の横断面形状に折畳み、この状態
で押出し機構を手動操作して押出し軸を前進させ、押出
し軸の先端部によって前記眼内レンズを挿入筒に通して
眼内に挿入する際に、押出し軸の先端部の下部に設けた
眼内レンズ掬上げ用突出部を、下面が前記挿入筒に密接
した形成としたので、前記掬上げ用突出部によって眼内
レンズの後側部分を掬上げて保持し、押出し軸の外力を
変形可能な眼内レンズに確実に伝達できる。According to the insertion device of the intraocular lens according to the invention of claim 1, the deformable intraocular lens is folded into two as a holding member, and
It is folded into an appropriate cross-sectional shape such as a letter shape or an M shape, and in this state, the pushing mechanism is manually operated to move the pushing shaft forward, and the distal end portion of the pushing shaft causes the intraocular lens to pass through the insertion tube and enter into the eye. At the time of insertion, since the lower surface of the intraocular lens scooping projection provided on the lower part of the tip of the pushing shaft is formed so that the lower surface is in close contact with the insertion tube, the scooping projection for rear projection of the intraocular lens The side portion can be picked up and held, and the external force of the pushing shaft can be reliably transmitted to the deformable intraocular lens.
【００２４】従って、変形可能な眼内レンズを、押潰し
て損傷させることなく、挿入筒内を前進させて挿入筒の
先端から押出すことができ、また、変形可能な眼内レン
ズを前記掬上げ用突出部に保持して押出すことで、この
眼内レンズを眼内の所望の部位に挿入できる。Therefore, the deformable intraocular lens can be advanced in the insertion tube and pushed out from the distal end of the insertion tube without being crushed and damaged, and the deformable intraocular lens can be scooped. The intraocular lens can be inserted into a desired part of the eye by holding the protrusion on the raising protrusion and pushing it out.
【００２５】請求項２の発明による眼内レンズの挿入器
具は、図７に示した変形可能な眼内レンズを眼内に挿入
する第１実施例に対応するもので、押出し軸の先端部に
よって眼内レンズを挿入筒に通して眼内に挿入する際
に、押出し軸先端部の眼内レンズの折畳んだ後側部分に
当接する部分を、前記後側部分と対応する形状に形成し
たので、眼内レンズの折畳んだ部分の両側をほぼ均等に
押すことができる。The intraocular lens insertion device according to the second aspect of the present invention corresponds to the first embodiment for inserting the deformable intraocular lens shown in FIG. 7 into the eye, and comprises the tip of the pushing shaft. When inserting the intraocular lens into the eye through the insertion tube, the portion of the extruding shaft tip portion that comes into contact with the folded rear side portion of the intraocular lens is formed in a shape corresponding to the rear side portion. , Both sides of the folded part of the intraocular lens can be pressed almost evenly.
【００２６】これと共に、押出し軸の先端部の上部に設
けた先端突出部を、折畳んだ眼内レンズの相対向する両
側上部間に密接して介在させることで、眼内レンズが挿
入筒内でこれの軸回りに回動することを防止し、方向性
を一定にすることができる。従って、挿入筒内で眼内レ
ンズを回動させることなく、この眼内レンズを一定の向
きで小さな切開創から眼内の所望部位に適確に投入でき
る。At the same time, the distal end protrusion provided on the upper end of the pushing shaft is closely contacted between the two opposing upper parts of the folded intraocular lens, so that the intraocular lens is inserted into the insertion tube. Therefore, it is possible to prevent rotation around this axis and to keep the directionality constant. Therefore, without rotating the intraocular lens in the insertion tube, the intraocular lens can be accurately inserted into a desired site in the eye from a small incision in a fixed direction.
【００２７】そして、請求項２の発明による眼内レンズ
の挿入器具は、押出し軸の先端部の他側部に形成した切
欠部に眼内レンズの後側部分に位置する支持部の線状の
突出部を通すことで、この突出部が押出し軸の先端部に
よって押潰されて損傷することを確実に防止できる。The instrument for inserting an intraocular lens according to a second aspect of the present invention has a linear portion of a support portion located at a rear side portion of the intraocular lens in a notch formed in the other side portion of the distal end portion of the pushing shaft. By passing the protruding portion, it is possible to reliably prevent the protruding portion from being crushed and damaged by the tip end portion of the pushing shaft.
【００２８】また、光学部に埋設した支持部の基部が眼
内レンズの２つ折り状などの折畳みによって左右非対称
となり、前記基部がもつ左，右非対称のばね力によっ
て、挿入筒内で眼内レンズが回動したり捩れたりするの
を、押出し軸先端部の一側および他側の切欠部間の上部
に形成した先端突出部が折畳んだ光学部の相対向する上
部間に、これらの上部と密接して介在することで防止
し、眼内レンズを一定の向きで眼内に適確に挿入でき
る。The base portion of the support portion embedded in the optical portion is left-right asymmetric due to folding of the intraocular lens into two folds, and the left and right asymmetric spring forces of the base portion cause the intraocular lens in the insertion tube. Rotation and twisting are caused by the tip protrusion formed on the upper portion between the notch on one side and the other side of the extruding shaft tip portion between the opposing upper portions of the folded optical portion. This can be prevented by closely interposing with, and the intraocular lens can be properly inserted into the eye in a fixed direction.
【００２９】さらに、請求項２の発明では、眼内レンズ
の光学部の外周に設けた支持部の基部を補強する１対の
突起のうち、折畳んだ眼内レンズの後側部分に位置する
突起を、押出し軸先端部の他側に形成した切欠部内に入
れることで、後側部分に位置する突起によって妨げられ
ることなく、押出し軸の先端部によって光学部の両側部
をほぼ均等に押すことができ、眼内レンズの回動や捩れ
の防止に役立つ。Further, in the invention of claim 2, of the pair of protrusions for reinforcing the base of the support portion provided on the outer periphery of the optical portion of the intraocular lens, the protrusion is located at the rear side portion of the folded intraocular lens. By inserting the protrusion into the notch formed on the other side of the extruding shaft tip, the extruding shaft tip pushes both sides of the optical part almost evenly without being obstructed by the protrusion located on the rear side. This helps prevent rotation and twisting of the intraocular lens.
【００３０】請求項３による眼内レンズの挿入器具は、
図８に示した眼内レンズを眼内に挿入する第２実施例に
対応するものであって、掬上げ用突出部によって、光学
部の後側部分と後側部分に位置する板状の支持部、また
はこの支持部のみを掬上げて保持できるのみではなく、
前述した第１実施例と同様に、押出し軸の上部に設けた
先端突出部を、折畳んだ眼内レンズの相対向する両側上
部間に密接して介在させることで、眼内レンズが挿入筒
内でこれの軸回りに回動することを防止し、方向性を一
定にすることができる。A device for inserting an intraocular lens according to claim 3 is
FIG. 9 is a view corresponding to a second embodiment in which the intraocular lens shown in FIG. 8 is inserted into the eye, and is a plate-shaped support located at the rear side portion and the rear side portion of the optical portion by the scooping protrusion. Not only the part or this support part can be picked up and held,
Similar to the above-described first embodiment, the distal end protruding portion provided on the upper portion of the pushing shaft is closely disposed between the opposite upper portions of the folded intraocular lens so that the intraocular lens can be inserted into the insertion tube. It can be prevented from rotating around its axis inside, and the directionality can be made constant.
【００３１】また、押出し軸の先端部両側に形成した切
欠部の末端面によって折畳んだ眼内レンズの後側部分に
位置する板状の支持部の末端面を押し、前記切欠部間の
上部に先細台形状の突出部を設け、この突出部を眼内レ
ンズの後側部分に位置する支持部の対向する側面の上部
に当接させることで、押出し軸の前進時にこれの先端部
によって後側部分に位置する支持部の外周を大きな範囲
で均等に押すことができ、支持部が板状であっても、こ
れを安定して押すことができ、眼内レンズが挿入筒の軸
回りに回動したり、捩れたりすることがない。Further, the end face of the plate-like support portion located at the rear side portion of the folded intraocular lens is pushed by the end faces of the cutouts formed on both sides of the tip of the pushing shaft, and the upper portion between the cutouts is pushed. By providing a tapered trapezoidal protrusion on the upper part of the side face of the supporting part located at the rear part of the intraocular lens, the rear end of the extruding shaft is moved backward by the tip of the protruding part. The outer circumference of the support part located on the side part can be pressed uniformly in a large range, and even if the support part is plate-shaped, it can be pressed stably, and the intraocular lens can be rotated around the axis of the insertion tube. Does not rotate or twist.
【００３２】[0032]
【実施例】以下、この発明の実施例につき図を参照して
説明する。図１ないし図４の各図は第１実施例による眼
内レンズの挿入器具を示す。第１実施例の挿入器具は、
図１に示すように、ほぼ筒状の器具本体１１と、器具本
体１１に嵌めた押出し軸１２と、器具本体１１の内周面
筒１３がある押出し機構１４と、ヒンジ部１５があるレ
ンズ設置部１６の先端側に挿入筒１７を突出させた包持
部材１８とを備え、器具本体１１の先端部上面には狭幅
部が先端側にある取付溝１１ａを器具本体１１の軸方向
に沿って形成してあり、押出し軸１２はおねじ筒１３に
軸方向に拘束して回動可能に連結し、器具本体１１に対
し回動を拘束してある。Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show the intraocular lens insertion device according to the first embodiment. The insertion device of the first embodiment is
As shown in FIG. 1, a substantially tubular instrument body 11, an extrusion shaft 12 fitted in the instrument body 11, an extrusion mechanism 14 having an inner peripheral surface tube 13 of the instrument body 11, and a lens installation having a hinge portion 15. The holding member 18 having the insertion cylinder 17 protruding is provided on the distal end side of the portion 16, and a mounting groove 11a having a narrow width portion on the distal end side is provided on the upper surface of the distal end portion of the instrument body 11 along the axial direction of the instrument body 11. The push-out shaft 12 is axially restrained and rotatably connected to the male screw cylinder 13 to restrain the rotation with respect to the instrument body 11.
【００３３】前記包持部材１８のレンズ設置部１６は、
図２に示すように、挿入筒１７の末端に固定半割り筒１
９を一体に設けると共に、固定半割り筒１９と対向する
可動半割り筒２０を挿入筒１７の末端に近接させて開閉
可能に設け、固定半割り筒１９と可動半割り筒２０との
下縁部をヒンジ部１５によって連結し、固定，可動半割
り筒１９，２０上には固定，可動押え板２１，２２をそ
れぞれ突出させてある。The lens mounting portion 16 of the holding member 18 is
As shown in FIG. 2, the fixed half tube 1 is attached to the end of the insertion tube 17.
9 is integrally provided, and a movable half-split cylinder 20 facing the fixed half-split cylinder 19 is provided close to the end of the insertion cylinder 17 so as to be openable and closable, and a lower edge of the fixed half-split cylinder 19 and the movable half-split cylinder 20 is provided. The parts are connected by a hinge part 15, and fixed and movable pressing plates 21 and 22 are projected on the fixed and movable half-split cylinders 19 and 20, respectively.
【００３４】また、可動半割り筒２０、ヒンジ部１５お
よび可動押え板２２によって開閉機構を構成し、開閉機
構を閉じると、可動押え板２２が固定押え板２１に当接
して、挿入筒１７と同軸の筒状になるようにしてある。
挿入筒１７は、基端側の内径が固定，可動半割り筒が当
接した筒状部の内径と等径であり、先端部１７ａのみを
先細に形成してある。なお、前述した構成は特開平５−
１０３８０８号公報に記載されたものとほぼ同構成であ
る。The movable half-split tube 20, the hinge portion 15 and the movable pressing plate 22 constitute an opening / closing mechanism. When the opening / closing mechanism is closed, the movable pressing plate 22 abuts the fixed pressing plate 21 and the insertion tube 17 is inserted. It is designed to be a coaxial cylinder.
The insertion cylinder 17 has an inner diameter on the proximal end side that is equal to the inner diameter of the tubular portion with which the movable half-divided cylinder abuts, and only the tip portion 17a is tapered. The above-mentioned configuration is disclosed in
The configuration is almost the same as that described in Japanese Patent No. 103808.
【００３５】第１実施例の挿入器具は、図３，図４に示
すように、押出し軸１２の先端部２３は、横断面を小判
形の扁平な形状、すなわち、上，下面を切欠いて水平面
２３ａとし、かつ上部２３ｂ、下部２３ｃを先端側に突
出させてあり、さらに、上部２３ｂの一側には平面凹弧
状に先端切欠部２３ｄを形成し、先端部２３の他側には
軸方向の全体に弧状横断面の切欠部２３ｅを形成し、前
記切欠部２３ｄ，２３ｅ以外の両側面には押出し軸１２
の軸心と同心の円弧面２３ｆを形成し、先端部２３の末
端側には小径部２４が連なっている。押出し軸１２の先
端部２３の下部２３ｃは、挿入筒１７の基端側部１７ｂ
の下面と密接し、先端縁２３ｇから末端側に向かって厚
さが漸増する側面三角形状に眼内レンズ掬上げ用突出部
２３ｈを形成し、この突出部２３ｈの末端部から凹湾曲
部２３ｉを介して上部２３ｂの下面末端部に連なってい
る。In the insertion device of the first embodiment, as shown in FIGS. 3 and 4, the distal end portion 23 of the pushing shaft 12 has a flat shape with an oval cross section, that is, the upper and lower surfaces are cut out to form a horizontal plane. 23a, and the upper portion 23b and the lower portion 23c are projected toward the tip side. Furthermore, a tip cutout portion 23d is formed in a plane concave arc shape on one side of the top portion 23b, and the other side of the tip portion 23 has an axial direction. A cutout portion 23e having an arc-shaped cross section is formed on the whole, and the extrusion shaft 12 is provided on both side surfaces other than the cutout portions 23d and 23e.
An arc surface 23f concentric with the shaft center is formed, and a small diameter portion 24 is connected to the end side of the tip portion 23. The lower portion 23c of the distal end portion 23 of the pushing shaft 12 has a base end side portion 17b of the insertion tube 17.
The projection portion 23h for lifting the intraocular lens is formed in a side surface triangular shape in which the thickness is gradually increased from the tip edge 23g toward the distal end side, and the concave curved portion 23i is formed from the distal end portion of the projection portion 23h. It is connected to the lower end portion of the upper portion 23b through.
【００３６】前記包持部材１８の挿入筒１７は、図１，
図２に示すように、基端側部１７ｂが上，下面を水平面
１７ｃとする小判状の横断面に形成してあり、先端部１
７ａが先端１７ｄを円形に形成し、上，下面の水平面１
７ｃの幅を漸減する先細状に形成し、また先端部１７ａ
には１２０°の角度間隔で周方向の３箇所に軸方向の全
体にわたって切込み１７ｅを形成してある。そして、挿
入筒１７は、押出し軸１２の先端部２３の上面２３ａ，
下面２３ｃが隙間なく摺動する形状にしてある。内レン
ズ１に用いるもので、これを眼内に挿入するには、包持
部材１８の可動押え板２２および可動半割り筒２０を開
き、眼内レンズの１対の支持部３を前方の一側と後方の
他側にそれぞれ位置させて光学部２をヒンジ部１５上方
に適宜の隙間を設けて設置し、可動押え板２２および可
動半割り筒２０を閉じて固定押え板２１および固定半割
筒１９に合わせ、半割り筒１９，２０内に光学部２を２
つ折り状に折畳み湾曲させて小さな形状にし、包持部材
１８に位置決めして保持する。The insertion tube 17 of the holding member 18 is shown in FIG.
As shown in FIG. 2, the base end side part 17b is formed in an oval-shaped cross section having upper and lower surfaces as horizontal planes 17c.
7a forms the tip 17d in a circular shape, and the upper and lower horizontal surfaces 1
7c is formed in a taper shape that gradually reduces the width, and the tip portion 17a
In this case, notches 17e are formed at three positions in the circumferential direction at angular intervals of 120 ° over the entire axial direction. Then, the insertion tube 17 has an upper surface 23a of the tip portion 23 of the pushing shaft 12,
The lower surface 23c is configured to slide without a gap. It is used for the inner lens 1, and in order to insert it into the eye, the movable holding plate 22 and the movable half tube 20 of the holding member 18 are opened, and the pair of supporting portions 3 of the intraocular lens is moved forward. Side and the other side of the rear, the optical part 2 is installed above the hinge part 15 with an appropriate gap, and the movable holding plate 22 and the movable half-split cylinder 20 are closed to fix the fixed holding plate 21 and the fixed half-split. Align the tube 19 with the optical part 2 in the half tubes 19 and 20.
It is folded and folded into a folded shape into a small shape, and is positioned and held by the wrapping member 18.
【００３８】この保持状態で器具本体１１の取付溝１１
ａの基端側から半割り筒１９，２０および挿入筒１７を
器具本体１１内に嵌め、器具本体１１外に突出している
押え板２１，２２を閉じたまま手に持って、包持部材１
８を器具本体１１の先端側に前進させ、押え板２１，２
２を取付溝１１ａの幅が狭い先端部に係合支持させて、
器具本体１１に装着すると共に、挿入筒１７を器具本体
１１の先端から突出させる。In this holding state, the mounting groove 11 of the instrument main body 11
The half-split cylinders 19 and 20 and the insertion cylinder 17 are fitted into the instrument main body 11 from the base end side of a, and the holding plates 21 and 22 projecting outside the instrument main body 11 are held in the hand while being closed, and the holding member 1
8 is advanced to the tip side of the instrument body 11, and the holding plates 21, 2
2 is engaged and supported by the tip portion of the mounting groove 11a having a narrow width,
The insertion tube 17 is attached to the instrument body 11 and the insertion tube 17 is projected from the tip of the instrument body 11.
【００３９】次に、押出し機構１４のおねじ筒１３を回
転させることで、おねじ筒１３と器具本体１１の内周面
に形成しためねじとのねじ嵌合によって後退位置にあっ
たおねじ筒１３と共に、押出し軸１２を軸回りに回動さ
せずに前進させる。押出し軸１２の前進によって、その
先端部２３の下部２３ｃに設けた掬上げ用突出部２３ｈ
が先端縁２３ｇから末端側に向かって厚さが漸増する側
面三角形状に形成してあり、下面が水平であるので、図
４に示すように、掬上げ用突出部２３ｈによって眼内レ
ンズ１の湾曲している光学部２の下部を掬上げる。Next, by rotating the external thread cylinder 13 of the pushing mechanism 14, the external thread cylinder 13 and the external thread which is formed on the inner peripheral surface of the instrument main body 11 are screw-fitted to each other and the external thread which is in the retracted position. Along with the cylinder 13, the push-out shaft 12 is moved forward without rotating about the axis. By the forward movement of the pushing shaft 12, the scooping protrusion 23h provided on the lower portion 23c of the tip portion 23 thereof.
Is formed in a side triangular shape whose thickness gradually increases from the front edge 23g toward the distal end, and the lower surface is horizontal. Therefore, as shown in FIG. Scoop up the lower part of the curved optical part 2.
【００４０】これと同時に、押出し軸１２の先端部２３
の上部２３ｂ一側に設けた先端切欠部２３ｄが湾曲して
いる光学部２の上部一側に当接し、先端部２３の他側に
設けた切欠部２３ｅに光学部２の後側部分に位置する突
起２ａおよび支持部３の線状の突出部３が前進可能に入
ると共に、上部２３ｂの他側先端が光学部２の他側部に
当接する。At the same time, the tip portion 23 of the extrusion shaft 12
The tip notch 23d provided on one side of the upper part 23b of the head abuts on one side of the curved optical part 2, and the notch 23e provided on the other side of the tip part 23 is positioned at the rear part of the optical part 2. The protrusion 2a and the linear protrusion 3 of the support portion 3 are allowed to move forward, and the other end of the upper portion 23b contacts the other side portion of the optical portion 2.
【００４１】この状態で、押出し軸１２の前進を続ける
と、これの先端部２３によって光学部２を押して眼内レ
ンズ１を前進させ、挿入筒１７の基端側部１７ｂを経
て、切開創に挿入した挿入筒１７の先端１７ｅから眼内
レンズ１を眼内に挿入する。In this state, when the push-out shaft 12 continues to move forward, the distal end portion 23 pushes the optical portion 2 to move the intraocular lens 1 forward, and the proximal end portion 17b of the insertion tube 17 is passed through to make an incision. The intraocular lens 1 is inserted into the eye from the tip 17e of the inserted insertion tube 17.
【００４２】この際、押出し軸１２の先端部２３は、挿
入筒１７の先端部２３下面および挿入筒１７の基端側部
１７ｂの下面を水平面にしてあるので、これらの面が密
接した状態で前進し、先端部２３の下部２３ｃの掬上げ
用突出部２３ｈは先端縁２３ｇが尖ってこれに近い部分
が薄く、末端側に向かって厚さが漸増しているので、眼
内レンズ１の光学部２を確実に掬上げて保持し、押出し
軸１２の外力を変形可能な眼内レンズ１に確実に伝達
し、これを損傷させることなく挿入筒１７から押出すこ
とができ、眼内レンズ１を所望の部位に挿入できる。At this time, since the lower surface of the distal end portion 23 of the insertion cylinder 17 and the lower surface of the proximal end portion 17b of the insertion cylinder 17 of the distal end portion 23 of the pushing shaft 12 are horizontal surfaces, these surfaces are in close contact with each other. As the scooping protrusion 23h of the lower portion 23c of the distal end portion 23 advances, the tip edge 23g is sharp and the portion close to this is thin, and the thickness gradually increases toward the distal end side. The portion 2 can be reliably picked up and held, the external force of the pushing shaft 12 can be surely transmitted to the deformable intraocular lens 1, and can be pushed out from the insertion tube 17 without damaging the intraocular lens 1. Can be inserted at the desired site.
【００４３】そして、押出し軸１２の先端部２３は、挿
入筒１７の基端側部１７ｂ内面に上，下面および側面の
一部の大きな面積で接触した状態で安定して挿入筒１７
内を直進し、また、挿入筒１７の先端部１７ａは、周方
向の３箇所に軸方向の全体にわたって切込み１７ｅを形
成してあるので、これらの切込み１７ｅが開き、挿入筒
１７の先端部１７ａが弾性変形して内径が拡がること
で、この先端部１７ａが先細になっていても、湾曲して
小さな形状になっている光学部２が徐々に変形前の形状
に戻りながら、挿入筒１７の先端部１７ａから出ること
で、小さな切開創でも、眼内に眼内レンンズ１を挿入で
きる。The distal end portion 23 of the pushing shaft 12 is stably in contact with the inner surface of the proximal end portion 17b of the insertion cylinder 17 in a large area of the upper, lower and side surfaces.
Further, since the notch 17e is formed at three positions in the circumferential direction over the entire axial direction, the notch 17e is opened, and the tip 17a of the insertion tube 17 is advanced. Even if the tip 17a is tapered by elastically deforming and expanding the inner diameter, the optical portion 2 that is curved and has a small shape gradually returns to the shape before the deformation, and By protruding from the tip portion 17a, the intraocular lens 1 can be inserted into the eye even with a small incision.
【００４４】さらに、押出し軸１２の先端部２３は、前
述のように、光学部２の後側部分と対応した形状にこれ
と当接する部分を形成してあると共に、上部２３ｂの先
端突出部が凸弧状に対向する光学部２の上部間に介在し
て、先端部２３が直進するので、光学部２が挿入筒１７
内で、これの軸回りに、回動することなく、方向性を一
定にできると共に、光学部２に埋設した支持部３の基部
３ａがもつ左，右非対称のばね力によって、挿入筒１７
内で眼内レンズ１が回動したり捩れたりすることもな
い。従って、変形可能な眼内レンズ１を一定の向きで眼
内の所望の部位に適確に挿入できる。Further, as described above, the tip end portion 23 of the push-out shaft 12 has a portion corresponding to the rear side portion of the optical portion 2 and is in contact with this, and the tip end protruding portion of the upper portion 23b is formed. Since the distal end portion 23 moves straight through the upper portion of the optical portion 2 facing in a convex arc shape, the optical portion 2 is inserted into the insertion tube 17
Inside, the insertion cylinder 17 can be made to have a constant directionality without rotating about its axis, and the left and right asymmetric spring forces of the base portion 3a of the support portion 3 embedded in the optical portion 2 have.
The intraocular lens 1 does not rotate or twist inside. Therefore, the deformable intraocular lens 1 can be accurately inserted into a desired site in the eye in a fixed direction.
【００４５】なお、第１実施例の挿入器具は、押出し軸
１２の先端部２３に設けた横断面凹弧状の切欠部２３ｅ
に眼内レンズ１の支持部３の線状の突出部３ｂを通した
ので、この突出部３ｂが先端部２３に押潰されて損傷す
ることがない。The insertion instrument of the first embodiment is provided with a notch 23e having a concave arc-shaped cross section provided at the tip 23 of the pushing shaft 12.
Since the linear protruding portion 3b of the supporting portion 3 of the intraocular lens 1 is passed through, the protruding portion 3b is not crushed by the tip portion 23 and damaged.
【００４６】図５および図６は第２実施例による挿入器
具の要部を示す。第２実施例による挿入器具は、押出し
軸１２の先端部２３の形状が第１実施例と異なり、ま
た、図８に示す変形可能な眼内レンズ１に用いることが
第１実施例と異なる以外、これらのものと構成、動作が
同様である。5 and 6 show the essential parts of the insertion device according to the second embodiment. The insertion instrument according to the second embodiment is different from the first embodiment in the shape of the distal end portion 23 of the pushing shaft 12, and is different from the first embodiment in that it is used for the deformable intraocular lens 1 shown in FIG. The configuration and operation are similar to those described above.
【００４７】図５，図６に示すように、押出し軸１２の
先端部２３は、先端部２３の両側に横断面凹弧状の切欠
部２３ｊを左右対称に下端まで形成し、上部２３ｂは、
先端側に突出する先端突出部が幅の狭い平面先細台形状
にしてあり、上部２３ｂの基部側に垂直な支持面２３ｋ
をそれぞれ設けた形状とし、上，下面の水平面２３ａを
横断面積が大きい押出し軸１２末端側に延長させ、第１
実施例に設けた横断面積が小さい小径部をなくし、小径
部に対応する部分より末端側を第１実施例と同様にして
ある。As shown in FIGS. 5 and 6, the distal end portion 23 of the extrusion shaft 12 has cutout portions 23j having a concave arc-shaped cross section formed on both sides of the distal end portion 23 symmetrically to the lower end, and the upper portion 23b is
The front end projecting portion projecting to the front end side has a narrow flat taper shape, and the supporting surface 23k perpendicular to the base side of the upper portion 23b.
The horizontal planes 23a of the upper and lower surfaces are extended to the distal end side of the extrusion shaft 12 having a large cross-sectional area.
The small-diameter portion having a small cross-sectional area provided in the embodiment is eliminated, and the end side from the portion corresponding to the small-diameter portion is similar to that of the first embodiment.
【００４８】第２実施例の挿入器具によって、図８に示
した変形可能な眼内レンズ１を眼内に挿入するには、光
学部２の前，後にこれと一体に形成した支持部４を位置
させて、図６に示すように、光学部２および支持部４を
２つ折り状に折畳んで湾曲させ、小さな形状にした以
外、第１実施例と同様に包持部材に保持し、この包持部
して押出し軸を回動させずに前進させる。In order to insert the deformable intraocular lens 1 shown in FIG. 8 into the eye with the insertion tool of the second embodiment, the support portion 4 formed integrally with the optical portion 2 is formed before and after the optical portion 2. 6 and, as shown in FIG. 6, the optical unit 2 and the supporting unit 4 are held in the wrapping member in the same manner as in the first embodiment except that the optical unit 2 and the supporting unit 4 are folded in two and curved to have a small shape. The holding part is moved forward without rotating the pushing shaft.
【００４９】図６に示すように、押出し軸１２の前進に
よって、その先端部２３の下部に設けた掬上げ用突出部
２３ｈが、第１実施例と同様に、先端縁２３ｇから末端
側に向かって厚さが側面三角形状に形成してあり、下面
が水平であるので、図６に示すように、掬上げ用突出部
２３ｈまたはこの突出部２３ｈおよび凹湾曲部２３ｉに
よって、眼内レンズ１の湾曲している光学部２の後側部
分と後側部分に位置する板状の支持部４との下部をまた
はこの支持部４の下部のみを掬上げる。As shown in FIG. 6, the forward movement of the pushing shaft 12 causes the scooping protrusion 23h provided at the lower portion of the tip end portion 23 thereof to face the distal end side from the tip edge 23g as in the first embodiment. Since the thickness is formed in a triangular shape on the side surface and the lower surface is horizontal, as shown in FIG. 6, the scooping protrusion 23h or the protrusion 23h and the concave curved portion 23i causes the intraocular lens 1 to move. The lower part of the curved rear part of the optical part 2 and the plate-shaped support part 4 located at the rear part or only the lower part of the support part 4 is scooped.
【００５０】これと同時に、押出し軸１２の先端部２３
の上部２３ｂの基部両側に掬上げ用突出部２３ｈの上方
にこれと対向させて設けた支持面２３ｋが２つ折り状に
折畳んで湾曲した後側部分に位置する支持部４の後端に
それぞれ当接し、幅の狭い上部２３ｂの先端突出部が後
側部分に位置して対向する支持部４の側縁間に入り、こ
れらの側縁に先端突出部両側面がそれぞれ当接する。At the same time, the tip portion 23 of the extrusion shaft 12
The supporting surfaces 23k provided on both sides of the base of the upper part 23b of the upper part above the scooping protrusions 23h so as to face the scooping protrusions 23h are respectively arranged at the rear ends of the supporting parts 4 located at the rear side portion which is bent and bent in two. The leading end protruding portions of the narrow upper portion 23b come into contact with each other and enter between the side edges of the supporting portions 4 located at the rear side portions, and both side surfaces of the leading end protruding portions come into contact with these side edges.
【００５１】この状態で、押出し軸１２の前進を続ける
ことで、眼内レンズ１を切開創に挿入した挿入筒１７の
先端から押出して眼内に挿入する。この際、第１実施例
とほぼ同様に、先端部２３の下部２３ｃの掬上げ用突出
部２３ｈは眼内レンズ１の光学部２の後側部分および後
側部分に位置する支持部４またはこの支持部４のみを掬
上げて保持し、押出し軸１２の外力を変形可能な眼内レ
ンズ１に確実に伝達し、これを損傷させることなく挿入
筒１７から押出すことができ、眼内レンズ１を所望の部
位に挿入できる。In this state, by continuing the forward movement of the pushing shaft 12, the intraocular lens 1 is pushed out from the tip of the insertion tube 17 inserted into the incision and inserted into the eye. At this time, in the same manner as in the first embodiment, the scooping protrusion 23h of the lower portion 23c of the distal end portion 23 has the support portion 4 or the support portion 4 located at the rear side portion and the rear side portion of the optical portion 2 of the intraocular lens 1. Only the support portion 4 is picked up and held, and the external force of the pushing shaft 12 is surely transmitted to the deformable intraocular lens 1 and can be pushed out from the insertion tube 17 without damaging the intraocular lens 1. Can be inserted at the desired site.
【００５２】そして、第１実施例とほぼ同様に、押出し
軸１２の先端部２３は、挿入筒の基端側部内を安定して
直進し、また湾曲して小さな形状になっている光学部２
および支持部４が徐々に変形前の状態に戻りながら、挿
入筒の先端部から出て、眼内に眼内レンズ１を挿入でき
る。Then, similarly to the first embodiment, the distal end portion 23 of the push-out shaft 12 stably moves straight in the proximal end side portion of the insertion tube, and is curved and has a small shape.
While the support portion 4 is gradually returning to the state before the deformation, the intraocular lens 1 can be inserted into the eye by coming out from the distal end portion of the insertion tube.
【００５３】さらに、押出し軸１２の先端部２３は、上
部２３ｂが眼内レンズ１の光学部２の後側部分に位置す
る支持部４の後側部分と対応した形状に、これと当接す
る部分を形成してあると共に、上部２３ｂの先端突出部
を先細の平面台形状とし、後側部分に位置する支持部４
の上方部分の間に介在して先端部２３が直進するので、
光学部２および前，後支持部４が挿入筒１７内で、これ
の軸回りに回動することなく、方向性を一定にして、眼
内レンズ１を一定の向きで眼内の所望の位置に適確に挿
入できる。Further, the tip portion 23 of the pushing shaft 12 has a shape corresponding to the rear side portion of the support portion 4 whose upper portion 23b is located at the rear side portion of the optical portion 2 of the intraocular lens 1 and is in contact with this. Is formed, and the front end protruding portion of the upper portion 23b is formed into a tapered flat trapezoidal shape, and the support portion 4 located at the rear side portion is formed.
Since the tip portion 23 goes straight while being interposed between the upper portions of
The optical part 2 and the front and rear support parts 4 do not rotate in the insertion cylinder 17 around their axes, and the directionality is kept constant, and the intraocular lens 1 is kept in a fixed direction at a desired position in the eye. Can be inserted properly.
【００５４】なお、この発明による眼内レンズの挿入器
具は、特許請求の範囲を逸脱しない限り、例えば包持部
材を器具本体に固定したり、これと一体に形成するなど
適宜変更でき、また挿入筒および押出し軸の先端部は
上，下面を水平面とする扁平な横断面形状にすることが
好ましく、さらに図７に示す眼内レンズの光学部外周に
の場合には押出し軸先端部の他側に形成した切欠部を支
持部の線状の突出部を通せる程度に小さくし、その先端
部に光学部の他側部を支持する小さい先端切欠部を形成
することが好ましい。The instrument for inserting an intraocular lens according to the present invention can be appropriately modified, for example, by fixing the wrapping member to the instrument body or forming it integrally with the instrument body without departing from the scope of the claims. It is preferable that the barrel and the tip of the extrusion shaft have a flat cross-sectional shape with the upper and lower surfaces as horizontal planes. Further, in the case of the outer circumference of the optical part of the intraocular lens shown in FIG. It is preferable to make the notch formed so as to be small enough to allow the linear protrusion of the support to pass therethrough, and to form a small tip notch that supports the other side of the optical unit at the tip.
【００５５】また、挿入筒は押出し軸の先端部の上面，
下面との円弧状の側面との両方または一方が隙間なく摺
動する形状にすればよいが、前記実施例のように押出軸
の先端部の上面，下面が隙間なく摺動する形状にするこ
とが好ましい。Further, the insertion tube is the upper surface of the tip of the pushing shaft,
The bottom surface and / or one of the arcuate side surfaces may be configured to slide without a gap, but the top surface and the bottom surface of the tip of the extrusion shaft may be configured to slide without a gap as in the above embodiment. Is preferred.
【００５６】[0056]
【発明の効果】以上説明したとおり、請求項１の発明に
よる眼内レンズの挿入器具は、包持部材に変形可能な眼
内レンズを２つ折り状、Ｗ字状、Ｍ字状など適宜の横断
面形状に折畳み、この状態で押出し機構を手動操作して
押出し軸を前進させ、押出し軸の先端部によって前記眼
内レンズを挿入筒に通して眼内に挿入する際に、押出し
軸の先端部の下部に設けた眼内レンズ掬上げ用突出部
を、下面が前記挿入筒に密接し、先端側から末端側に向
かって厚さが漸増する側面三角形状に形成したので、前
記掬上げ用突出部によって眼内レンズの後側部分を掬上
げて保持し、押出し軸の外力を変形可能な眼内レンズに
確実に伝達できる。As described above, in the intraocular lens insertion device according to the first aspect of the present invention, the deformable intraocular lens as a holding member can be folded in a suitable shape such as a folded shape, a W shape, or an M shape. When folded into a planar shape, the extrusion mechanism is manually operated in this state to move the extrusion shaft forward, and when the intraocular lens is inserted through the insertion tube into the eye by the tip of the extrusion shaft, the extrusion shaft is pushed out.
Intraocular lens scooping protrusion provided under the tip of the shaft
The lower surface is in close contact with the insertion tube, and
Since it was formed into a triangular shape with a gradually increasing thickness,
The rear part of the intraocular lens is scooped and held by the scooping protrusion, and the external force of the pushing shaft can be reliably transmitted to the deformable intraocular lens.
【００５７】従って、変形可能な眼内レンズを、押潰し
て損傷させることなく、挿入筒内を前進させて挿入筒の
先端から押出すことができ、また、変形可能な眼内レン
ズを前記掬上げ用突出部に保持して押出すことで、この
眼内レンズを眼内の所望の部位に挿入できる。Therefore, the deformable intraocular lens can be advanced in the insertion tube and pushed out from the tip of the insertion tube without being crushed and damaged, and the deformable intraocular lens can be scooped. The intraocular lens can be inserted into a desired part of the eye by holding the protrusion on the raising protrusion and pushing it out.
【００５８】請求項２の発明による眼内レンズの挿入器
具は、図７に示した眼内レンズに好適し、前述した請求
項１の発明による効果に加えて、押出し軸の先端部によ
って眼内レンズを挿入筒に通して眼内に挿入する際に、
押出し軸先端部の眼内レンズの折畳んだ後側部分に当接
する部分を、前記後側部分と対応する形状に形成したの
で、眼内レンズの折畳んだ部分の両側をほぼ均等に押す
ことができる。The instrument for inserting an intraocular lens according to the invention of claim 2 is suitable for the intraocular lens shown in FIG. 7, and in addition to the effect according to the invention of claim 1 described above, an intraocular lens is provided by the tip of the pushing shaft. When inserting the lens into the eye through the insertion tube,
Since the part of the tip of the pushing shaft that contacts the folded rear part of the intraocular lens is formed in a shape corresponding to the rear part, press both sides of the folded part of the intraocular lens almost evenly. You can
【００５９】これと共に、押出し軸の先端部の上部に設
けた先端突出部を、折畳んだ眼内レンズの相対向する両
側上部間に密接して介在させることで、眼内レンズが挿
入筒内でこれの軸回りに回動することを防止し、方向性
を一定にすることができる。従って、挿入筒内で眼内レ
ンズを回動させることなく、この眼内レンズを一定の向
きで小さな切開創から眼内の所望の部位に適確に挿入で
きる。At the same time, the tip projections provided on the top of the tip of the pushing shaft are closely contacted between the opposite upper parts of the folded intraocular lens, so that the intraocular lens is inserted into the insertion tube. Therefore, it is possible to prevent rotation around this axis and to keep the directionality constant. Therefore, without rotating the intraocular lens in the insertion tube, the intraocular lens can be accurately inserted into a desired site in the eye from a small incision in a fixed direction.
【００６０】そして、請求項２の発明による眼内レンズ
の挿入器具は、押出し軸の先端部の他側部に形成した切
欠部に眼内レンズの後側部分に位置する支持部の線状の
突出部を通すことで、この突出部が押出し軸の先端部に
よって押潰されて損傷することを確実に防止できる。According to a second aspect of the present invention, there is provided an intraocular lens insertion instrument in which a linear portion of a supporting portion located at a rear side portion of the intraocular lens is formed in a notch formed in the other side portion of the distal end portion of the pushing shaft. By passing the protruding portion, it is possible to reliably prevent the protruding portion from being crushed and damaged by the tip end portion of the pushing shaft.
【００６１】また、光学部に埋設した支持部の基部が眼
となり、前記基部がもつ左，右非対称のばね力によっ
て、挿入筒内で眼内レンズが回動したり捩れたりするの
を、押出し軸先端部の一側および他側の切欠部間の上部
に形成した先端突出部が折畳んだ光学部の相対向する上
部間に、これらの上部と密接して介在することで防止
し、眼内レンズを一定の向きで眼内に適確に挿入でき
る。The base portion of the support portion embedded in the optical portion serves as an eye, and the left and right asymmetrical spring forces of the base portion cause the intraocular lens to rotate and twist in the insertion tube to be pushed out. The tip projection formed on the upper part between the notch on one side and the other on the other side of the shaft is prevented between the upper parts of the folded optical part, which are opposed to each other, by closely interposing these upper parts. The inner lens can be accurately inserted into the eye in a fixed direction.
【００６２】さらに、請求項２の発明では、眼内レンズ
の光学部の外周に設けた支持部の基部を補強する１対の
突起のうち、折畳んだ眼内レンズの後側部分に位置する
突起を、押出し軸先端部の他側に形成した切欠部内に入
れることで、後側部分に位置する突起によって妨げられ
ることなく、押出し軸の先端部によって光学部の両側部
をほぼ均等に押すことができ、眼内レンズの回動や捩れ
の防止に役立つ。Further, in the invention of claim 2, of the pair of projections for reinforcing the base portion of the supporting portion provided on the outer periphery of the optical portion of the intraocular lens, the protrusion is located at the rear side portion of the folded intraocular lens. By inserting the protrusion into the notch formed on the other side of the extruding shaft tip, the extruding shaft tip pushes both sides of the optical part almost evenly without being obstructed by the protrusion located on the rear side. This helps prevent rotation and twisting of the intraocular lens.
【００６３】請求項３の発明による眼内レンズの挿入器
具は、図８に示した眼内レンズに好適し、前述した請求
項１による発明の効果に加えて次の効果が得られる。す
なわち、掬上げ用突出部によって、光学部の後側部分と
後側部分に位置する板状の支持部、またはこの支持部の
みを掬上げて保持できるのみではなく、前述した第１実
施例と同様に、押出し軸の上部に設けた先端突出部を、
折畳んだ眼内レンズの相対向する両側上部間に密接して
介在させることで、眼内レンズが挿入筒内でこれの軸回
りに回動することを防止し、方向性を一定にすることが
できる。The instrument for inserting an intraocular lens according to the invention of claim 3 is suitable for the intraocular lens shown in FIG. 8, and the following effect can be obtained in addition to the effect of the invention according to claim 1 described above. That is, not only can the scooping protrusions scoop and hold the rear part of the optical part and the plate-shaped support parts located at the rear part, or only this support part, the first embodiment described above. Similarly, the tip protrusion provided on the top of the extrusion shaft,
Preventing the intraocular lens from rotating around its axis in the insertion tube and keeping the directionality constant by interposing the folded intraocular lens close to each other between the upper parts facing each other. You can
【００６４】また、押出し軸の先端部両側に形成した切
欠部の末端面によって折畳んだ眼内レンズの後側部分に
位置する板状の支持部の末端面を押し、前記切欠部間の
上部に先細台形状の突出部を設け、この突出部を眼内レ
ンズの後側部分に位置する支持部の対向する側面の上部
に当接させることで、押出し軸の前進時にこれの先端部
によって後側部分に位置する支持部の外周を大きな範囲
で均等に押すことができ、支持部が板状であっても、こ
れを安定して押すことができ、眼内レンズが挿入筒の軸
回りに回動したり、捩れたりすることがない。Further, the end faces of the plate-like support portion located at the rear portion of the folded intraocular lens are pushed by the end faces of the notches formed on both sides of the tip of the pushing shaft, and the upper portion between the notches is pushed. By providing a tapered trapezoidal protrusion on the upper part of the side face of the supporting part located at the rear part of the intraocular lens, the rear end of the extruding shaft is moved backward by the tip of the protruding part. The outer circumference of the support part located on the side part can be pressed uniformly in a large range, and even if the support part is plate-shaped, it can be pressed stably, and the intraocular lens can be rotated around the axis of the insertion tube. Does not rotate or twist.
【図１】この発明の第１実施例に係る変形可能な眼内レ
ンズの挿入器具を示した一部切欠き斜視図FIG. 1 is a partially cutaway perspective view showing a deformable intraocular lens insertion device according to a first embodiment of the present invention.
【図２】図１に示した挿入器具の包持部材の拡大斜視図FIG. 2 is an enlarged perspective view of a holding member of the insertion device shown in FIG.
【図３】図１に示した挿入器具の押出し軸先端部の拡大
斜視図FIG. 3 is an enlarged perspective view of a tip end portion of a pushing shaft of the insertion device shown in FIG.
【図４】図１に示した挿入器具の挿入筒を縦断した動作
説明用の拡大側面図FIG. 4 is an enlarged side view for explaining the operation in which the insertion tube of the insertion device shown in FIG. 1 is cut vertically.
【図５】この発明の第２実施例に係る変形可能な眼内レ
ンズの挿入器具の押出し軸先端部を示した拡大斜視図FIG. 5 is an enlarged perspective view showing a distal end portion of a pushing shaft of a deformable intraocular lens insertion instrument according to a second embodiment of the invention.
【図６】第２実施例による挿入器具の挿入筒を縦断した
動作説明用の拡大側面図FIG. 6 is an enlarged side view for explaining the operation in which the insertion tube of the insertion device according to the second embodiment is cut vertically.
【図７】変形可能な眼内レンズの一例を示した拡大平面
図FIG. 7 is an enlarged plan view showing an example of a deformable intraocular lens.
【図８】変形可能な眼内レンズの他例を示した拡大平面
図FIG. 8 is an enlarged plan view showing another example of the deformable intraocular lens.
１ 変形可能な眼内レンズ ２ 光学部 ２ａ 突起 ３ 支持部 ３ａ 基部 ３ｂ 線状の突出部 ４ 支持部 １１ 器具本体 １１ａ 取付溝 １２ 押出し軸 １３ おねじ筒 １４ 押出し機構 １５ ヒンジ部 １６ レンズ設置部 １７ 挿入筒 １７ａ 先端部 １７ｂ 基端側部 １７ｃ 水平面 １７ｄ 先端 １７ｅ 切込み １８ 包持部材 １９ 固定半割り筒 ２０ 可動半割り筒 ２１ 固定押え板 ２２ 可動押え板 ２３ 押出し軸の先端部 ２３ａ 水平面 ２３ｂ 上部 ２３ｃ 下部 ２３ｄ 先端切欠部 ２３ｅ 切欠部 ２３ｆ 円弧面 ２３ｇ 先端縁 ２３ｈ 掬上げ用突出部 ２３ｉ 凹湾曲部 ２３ｊ 切欠部 ２３ｋ 支持面 ２４ 小径部 1 Deformable intraocular lens 2 Optics 2a protrusion 3 Support 3a base 3b Linear protrusion 4 Support 11 Instrument body 11a mounting groove 12 Extrusion shaft 13 male screw cylinder 14 Extrusion mechanism 15 Hinge part 16 Lens installation section 17 insertion tube 17a tip 17b Base end side 17c Horizontal plane 17d tip 17e notch 18 Holding member 19 fixed halves 20 movable halves 21 Fixed presser plate 22 Movable presser plate 23 Tip of extrusion shaft 23a Horizontal plane 23b upper part 23c lower part 23d tip notch 23e Notch 23f circular surface 23g tip edge 23h Scooping protrusion 23i concave curved portion 23j Notch 23k support surface 24 Small diameter part
Claims (3)
持部を一体化し少なくとも光学部が所定の記憶特性を有
する変形可能な眼内レンズを２つ折り状など適宜の横断
面形状に折畳み小さな形状にして包持する包持部材と、
この包持部材の先端側に連なる挿入筒の先端から包持部
材に包持した前記眼内レンズを押出す押出し軸と、この
押出し軸を前進させる押出し機構とを、器具本体に設
け、前記押出し軸の回動を拘束させた、変形可能な眼内
レンズの挿入器具において、押出し軸の先端部の下部
に、下面が前記挿入筒の基端側部の下部内面に密接し、
先端側から末端側に向かって厚さが漸増する側面三角形
状に眼内レンズ掬上げ用突出部を形成したことを特徴と
する変形可能な眼内レンズの挿入器具。1. A small shape in which an optical part made of an elastic material and a pair of support parts are integrated and at least the optical part has a deformable intraocular lens having a predetermined memory characteristic, and the deformable intraocular lens is folded into an appropriate cross-sectional shape such as a two-fold shape. A wrapping member to wrap around,
An extruding shaft for extruding the intraocular lens encased in the encapsulating member from the distal end of the insertion tube connected to the distal end side of the enclosing member, and an extruding mechanism for advancing the extruding shaft are provided in the instrument body, and the extruding is performed. In the insertion instrument of the deformable intraocular lens, which restrains the rotation of the shaft, in the lower part of the distal end portion of the pushing shaft, the lower surface is in close contact with the lower inner surface of the proximal end side portion of the insertion tube,
Side triangle whose thickness gradually increases from the tip side to the end side
A deformable intraocular lens insertion device, characterized in that a projection for lifting the intraocular lens is formed in a circular shape .
変形可能な弾性材料からなる円形の光学部と、光学部と
異種の可撓性材料からなり光学部の外周部に基部を埋込
み固着した１対の支持部とを有し、光学部の外周に支持
部の基部を補強する突起を設けると共に、光学部の前記
突起から突出した支持部の線状の突出部を湾曲させ、支
持部を光学部中心に対して対称形とし、押出し軸は、先
端部の上部に前記眼内レンズの折畳んだ光学部の後側部
分に位置する一側部を支持する切欠部を形成し、他側部
に眼内レンズの折畳んだ光学部の後側部分に位置する一
側部を支持する切欠部を形成し、他側部に後側部分に位
置する前記突起を入れ、かつ後側部分に位置する支持部
の線状の突出部を通す切欠部を形成し、前記上部の他側
部前端で光学部の他側部を支持し、前記両切欠部間の上
部に、折畳んだ光学部の相対向した上部間に密接して介
在する先端突出部を設け、この先端突出部と眼内レンズ
掬上げ用突出部とを上下に対向させ、この掬上げ用突出
部によって眼内レンズの折畳んだ光学部の後側部分を掬
上げるようにしたことを特徴とする請求項１に記載の変
形可能な眼内レンズの挿入器具。2. The intraocular lens comprises a circular optical part made of a deformable elastic material having a predetermined memory characteristic, and a flexible material different from the optical part, and a base is embedded and fixed in the outer peripheral part of the optical part. And a pair of supporting portions, and a protrusion that reinforces the base of the supporting portion is provided on the outer periphery of the optical portion, and the linear protruding portion of the supporting portion that protrudes from the protrusion of the optical portion is curved to form a supporting portion. Is symmetrical with respect to the center of the optical part, and the push-out shaft has a notch part for supporting one side part located at the rear part of the folded optical part of the intraocular lens in the upper part of the tip part, A side portion is formed with a cutout portion for supporting one side portion located at the rear side portion of the folded optical portion of the intraocular lens, and the other side portion is provided with the protrusion located at the rear side portion, and the rear side portion Forming a notch through which the linear protrusion of the support located at A tip protrusion that closely supports the side portion and is interposed between the opposed upper portions of the folded optical portion is provided in the upper portion between the notches, and the protrusion and the intraocular lens scooping protrusion are provided. The deformable intraocular part according to claim 1, wherein the rear part of the folded optical part of the intraocular lens is picked up by the picking-up protruding part. Lens insertion tool.
変形可能な弾性材料からなり、円形の光学部の前，後に
板状の支持部をそれぞれ一体に突出させ、押出し軸は、
先端部の両側にそれぞれ切欠部を形成し、これらの切欠
部の末端に、眼内レンズの後側部分に位置する支持部の
後端を支持する支持面を形成し、前記切欠部間の上部
に、後側部分に位置する支持部の対向する側面の上部に
密接してこれらの側面間に介在する先細台形状の先端突
出部を設け、この先端突出部と眼内レンズ掬上げ用突出
部とを上下に対向させ、この掬上げ用突出部によって眼
内レンズの折畳んだ光学部の後側部と後側部分に位置す
る支持部、またはこの支持部のみを掬上げるようにした
ことを特徴とする請求項１に記載の変形可能な眼内レン
ズの挿入器具。3. The intraocular lens is made of a deformable elastic material having a predetermined memory characteristic, and the plate-shaped support portions are integrally projected in front of and behind the circular optical portion, and the extrusion shaft is
Notches are formed on both sides of the tip, and at the ends of these notches, a support surface for supporting the rear end of the support located at the rear part of the intraocular lens is formed, and the upper part between the notches. Is provided with a tapered trapezoidal tip protrusion that closely contacts the upper portions of the opposite side surfaces of the support portion located at the rear side portion and that is interposed between these side surfaces, and the tip protrusion and the intraocular lens scooping protrusion portion. And the upper and lower sides are opposed to each other, and the scooping protrusions are used to scoop up the supporting parts located at the rear side and the rear side of the folded optical part of the intraocular lens, or only this supporting part. The deformable intraocular lens insertion device of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16535794A JP3412107B2 (en) | 1994-07-18 | 1994-07-18 | Deformable intraocular lens insertion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16535794A JP3412107B2 (en) | 1994-07-18 | 1994-07-18 | Deformable intraocular lens insertion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0824282A JPH0824282A (en) | 1996-01-30 |
| JP3412107B2 true JP3412107B2 (en) | 2003-06-03 |
Family
ID=15810836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16535794A Expired - Fee Related JP3412107B2 (en) | 1994-07-18 | 1994-07-18 | Deformable intraocular lens insertion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3412107B2 (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006080191A1 (en) | 2005-01-26 | 2006-08-03 | Hoya Corporation | Intraocular lens insertion device |
| JP4836046B2 (en) | 2005-02-24 | 2011-12-14 | Ｈｏｙａ株式会社 | Intraocular lens insertion device |
| JP4922174B2 (en) | 2005-09-28 | 2012-04-25 | Ｈｏｙａ株式会社 | Intraocular lens insertion device |
| JP4877643B2 (en) * | 2005-12-08 | 2012-02-15 | Ｈｏｙａ株式会社 | Intraocular lens insertion device |
| EP2161005B1 (en) | 2007-05-30 | 2016-12-28 | Hoya Corporation | Intraocular lens inserting tool |
| JP5086713B2 (en) | 2007-07-11 | 2012-11-28 | Ｈｏｙａ株式会社 | Intraocular lens insertion device |
| JP5254669B2 (en) | 2008-06-05 | 2013-08-07 | Ｈｏｙａ株式会社 | Intraocular lens insertion device and cartridge |
| JP5470753B2 (en) | 2008-06-17 | 2014-04-16 | Ｈｏｙａ株式会社 | Intraocular lens insertion device |
| SG172876A1 (en) | 2009-01-07 | 2011-08-29 | Hoya Corp | Intraocular lens insertion device |
| EP2555708B1 (en) | 2010-04-08 | 2015-03-18 | Hoya Corporation | Ocular implant insertion apparatus |
| JP5511530B2 (en) | 2010-06-10 | 2014-06-04 | Ｈｏｙａ株式会社 | Intraocular lens insertion device |
| JP6258865B2 (en) | 2012-11-29 | 2018-01-10 | 興和株式会社 | Intraocular lens insertion device |
| US20160151150A1 (en) | 2013-07-24 | 2016-06-02 | Kowa Company, Ltd. | Intraocular lens-inserting instrument |
| US10588780B2 (en) * | 2015-03-04 | 2020-03-17 | Alcon Inc. | Intraocular lens injector |
| US10849738B2 (en) | 2015-09-16 | 2020-12-01 | Hoya Corporation | Intraocular lens injector |
| JP6646987B2 (en) | 2015-09-16 | 2020-02-14 | Hoya株式会社 | Intraocular lens insertion device |
| AU2017288642B2 (en) | 2016-06-28 | 2022-05-19 | Hoya Corporation | Intraocular lens insertion tool |
| JP7162445B2 (en) | 2018-05-25 | 2022-10-28 | Hoya株式会社 | intraocular lens inserter |
| JP7407113B2 (en) * | 2018-08-07 | 2023-12-28 | 参天製薬株式会社 | Intraocular lens insertion device |
-
1994
- 1994-07-18 JP JP16535794A patent/JP3412107B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0824282A (en) | 1996-01-30 |
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