JP6825761B2 - 緑内障の眼圧制御のための排水装置 - Google Patents
緑内障の眼圧制御のための排水装置 Download PDFInfo
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Description
な空間を作り出すステンレス鋼の装置に関する。この排出により、眼圧が制御でき、失明、疼痛などの緑内障に関連する疾病を防ぐことができる。
上昇した状態であると、完全かつ不可逆的な視覚喪失が生じる。
は、1分あたり約3〜5μLの割合で、眼の後房(posterior chamber)の毛様体(ciliary body)により産生される液体である。産生された液は、次いで、虹彩の瞳孔開口部を
通って眼の前房に入る。前房に入ると、液は2つの異なる経路を通って眼から出ていき、その経路は、流出の10%を占め、毛様体の筋線維の間で液が濾過される「ぶどう膜強膜(uveoescleral)」流出路と、流出の90%を占め、3次元の篩状構造に配列されたコラーゲンの束によって構成されている線維柱(trabecula)というフィルタを通って、角膜
と虹彩の間の接合部(虹彩角膜角)から液が排出される、「管状(canalicular)」経路
である。この場合、房水は、いわゆるシュレム管に行き、次に上強膜静脈に行く。
では、線維柱帯の外面およびシュレム管の内壁に沿って抵抗の異常が生じる。「閉塞隅角緑内障(angle-closure glaucoma)」は、隅角の器質的な閉塞により、「続発緑内障(secondary glaucoma)」は、炎症性の落屑物質(inflammatory waste)の付着、当該領域の血管新生、色素のブロッキングなどの様々な理由から、抵抗が増加する。
プを傷つける可能性があり、治療が失敗する場合がある。最初線維柱帯切除術の成功した眼のうち、80%は術後3〜5年の期間で濾過が停止する。線維症を最小限にするために、外科医は現在、手術の際に強膜フラップにマイトマイシンC(MMC)や5−フルオロウラシル(5−FU)などの抗線維化剤を適用している。これらの薬剤を使用したことで、線維柱帯切除術の成功率が上昇したが、合併症も増加した。
性材料(biocompatible material)で構成することができ、特に、シリコーンまたは類似のポリマー、ポリテトラフルオロエチレン、ポリプロピレンやその他の薄壁ポリマーを含むことができるが、これらに限定されない。また、インプラント作製の技術分野で公知の金属や合金を使用することができる。強膜内空間であっても、上強膜空間であっても、その両者であっても、前房から眼の外部に至る1つ以上のバーチャルな空間を作り出すためには、使用される材料が眼組織に付着しないことが重要である。空間はバーチャルなもので、実在しておらず、眼の内部と外部との間の圧力勾配に応じて速いまたは遅い速度で房水が流れる一方向の経路を作り出す。排水経路は、バーチャルな経路であるため、前房が平坦化する可能性や細菌が装置を通って侵入する可能性を最小限に抑える。さらに固定方式は低侵襲的であり、そのため出血の可能性が低減される。
図2は、フィルトレーション装置(濾過装置)の側面図を示したものであり、角膜と虹彩の間の前房(図6を参照)に配置される「A」部を見て取れる。この「A」部は、0.3mmから1.0mmの間の寸法の上底「b」と、0.3mmから0.9mmの間の高さ
「h」と、挿入を容易にするための下側の丸みを帯びた頂点「v」とを備える2つの三角形の形状を備える。これによって、導入または除去が容易になるだけでなく、低外傷性の固定を実現する。
図2は、フィルトレーション装置の側面図を示したものであり、「B」部を見て取れる。この部分は、角膜輪部を穿刺し、角膜と装置の上面との間で上側にバーチャルな空間を形成し、強膜と装置の底面との間で下側にもう1つのバーチャルな空間を形成する。房水がこれらのバーチャルな空間を通って前房から強膜内空間または上強膜空間まで排出される。装置のシートの形状の「B」部は、0.02mmから0.3mmの間の厚さである。
図2は、フィルトレーション装置の側面図を示したものであり、「C」部を見て取れる。この部分は、0.5mmから15mmの間の長さで、0.02mmから0.3mmの間の厚さであり、薄く、柔軟性があり、おおよそ眼のカーブに合うように湾曲される。
場合に極めて有益であり得る。
Claims (6)
- 眼内の房水を排出するための一体型の装置であって、
前記眼の前房内で用いられる第一部分と、
前記前房と前記眼の外部を接続するために用いられる第二部分と、
前記眼の外側に位置する第三部分と、
を備え、
前記装置は、金属または金属合金により構成される、前記装置を取り囲む前記眼の組織に付着しないシートであり、
前記第二部分は、前記組織に付着しない平坦なシート形状からなり、角膜と強膜の間に配置され、前記角膜と前記装置の上面との間の第1の空間と、前記強膜と前記装置の底面との間の第2の空間を形成するように構成され、
前記第1の空間および前記第2の空間は、前記眼の内部と外部との間の圧力勾配に応じて形成されて房水を流すように構成される、
装置。 - 前記第一部分が、0.5mmから4mmの間の幅を有し、挿入を容易にするための尖った端部を備える、
請求項1に記載の、眼内の房水を排出するための一体型の装置。 - 前記第二部分が、0.3mmから1.2mmの間の長さと、0.5mmから4mmの間の幅と、0.02mmから0.3mmの間の厚さを備える、
請求項1または2に記載の、眼内の房水を排出するための一体型の装置。 - 前記第三部分は、前記眼の強膜内空間と上強膜空間のいずれかまたは両方の中で用いられる、
請求項1から3のいずれか1項に記載の、眼内の房水を排出するための一体型の装置。 - 前記第三部分が、0.5mmから15mmの間の長さ、0.7mmから5mmの間の幅、および0.5mmから15mmの間の長さを備える、
請求項1から4のいずれか1項に記載の、眼内の房水を排出するための一体型の装置。 - 前記装置は、ステンレス鋼により構成される、
請求項1から5のいずれか1項に記載の、眼内の房水を排出するための一体型の装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PE001057-2014/DIN | 2014-07-01 | ||
PE2014001057A PE20151266A1 (es) | 2014-07-01 | 2014-07-01 | Dispositivo de drenaje para el control de la presion intraocular en glaucoma |
PCT/PE2015/000009 WO2016003294A1 (es) | 2014-07-01 | 2015-07-01 | Dispositivo de drenaje para el control de la presion intraocular en glaucoma |
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JP2017519592A JP2017519592A (ja) | 2017-07-20 |
JP6825761B2 true JP6825761B2 (ja) | 2021-02-03 |
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JP2016576047A Active JP6825761B2 (ja) | 2014-07-01 | 2015-07-01 | 緑内障の眼圧制御のための排水装置 |
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US (1) | US10758412B2 (ja) |
EP (1) | EP3175820A4 (ja) |
JP (1) | JP6825761B2 (ja) |
KR (1) | KR102268311B1 (ja) |
CN (1) | CN106687072B (ja) |
BR (1) | BR112016030196B1 (ja) |
CL (1) | CL2016003238A1 (ja) |
CO (1) | CO2016005603A2 (ja) |
IL (1) | IL249688B (ja) |
MX (1) | MX2016017411A (ja) |
PE (1) | PE20151266A1 (ja) |
SG (2) | SG10201901871WA (ja) |
WO (1) | WO2016003294A1 (ja) |
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CN114532976A (zh) | 2016-05-31 | 2022-05-27 | 酷拉公司 | 可植入眼压传感器和使用方法 |
WO2019147609A2 (en) * | 2018-01-23 | 2019-08-01 | Avisi Technologies, LLC | Method and device for treating eye disease |
KR101999479B1 (ko) | 2018-02-06 | 2019-07-11 | 가톨릭대학교 산학협력단 | 녹내장 억제용 방수배출기구 |
JP2022552284A (ja) | 2019-10-10 | 2022-12-15 | シファメド・ホールディングス・エルエルシー | 流量調整可能な緑内障用シャントならびに関連システム及び方法 |
WO2021151007A1 (en) | 2020-01-23 | 2021-07-29 | Shifamed Holdings, Llc | Adjustable flow glaucoma shunts and associated systems and methods |
US11291585B2 (en) | 2020-02-14 | 2022-04-05 | Shifamed Holdings, Llc | Shunting systems with rotation-based flow control assemblies, and associated systems and methods |
WO2021188952A1 (en) | 2020-03-19 | 2021-09-23 | Shifamed Holdings, Llc | Intraocular shunts with low-profile actuation elements and associated systems and methods |
EP4135640A4 (en) | 2020-04-16 | 2024-04-17 | Shifamed Holdings Llc | ADJUSTABLE GLAUCOMA TREATMENT DEVICES AND ASSOCIATED SYSTEMS AND METHODS |
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PE20151266A1 (es) | 2015-09-10 |
CN106687072B (zh) | 2021-01-22 |
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CO2016005603A2 (es) | 2017-03-10 |
WO2016003294A9 (es) | 2017-02-23 |
EP3175820A1 (en) | 2017-06-07 |
MX2016017411A (es) | 2017-05-15 |
KR102268311B1 (ko) | 2021-06-23 |
CN106687072A (zh) | 2017-05-17 |
CL2016003238A1 (es) | 2017-10-13 |
BR112016030196A8 (pt) | 2022-07-05 |
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