JP6943840B2 - 洞および鼻のステント - Google Patents
洞および鼻のステント Download PDFInfo
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- JP6943840B2 JP6943840B2 JP2018507734A JP2018507734A JP6943840B2 JP 6943840 B2 JP6943840 B2 JP 6943840B2 JP 2018507734 A JP2018507734 A JP 2018507734A JP 2018507734 A JP2018507734 A JP 2018507734A JP 6943840 B2 JP6943840 B2 JP 6943840B2
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- sleeve
- stents
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Description
関連出願の相互参照
本願は、その開示が本明細書に参照により援用されている、2015年8月26日に出願された、「洞および鼻のステント(SINUS AND NASAL STENT)」という名称の米国仮特許出願第62/210,267号の利益を主張するものである。
a)患者の体外で握持されるように構成された近位握持部と、
b)遠位中空管状部であって、握持部を使用して操作されるように構成され、かつ該中空管状部の内部に配設されているステントを患者の副鼻腔もしくは鼻腔内に挿入するための大きさに作製されている、遠位中空管状部と、
c)中空管状部の内部での非膨張状態では、そのような副鼻腔もしくは鼻腔内への挿入に適した断面直径を有して配設され、膨張状態では、そのような腔内に存在するための大きさおよび形状に作製された通気性がある略管状の構造をもたらす、袖部付きの径方向に膨張可能な1つまたは複数のステントと、
d)挿入装置の内部に配設されており、かつ中空管状部からそのような腔内へステントの1つまたは複数を送達するように構成された作動装置と
を含む、洞もしくは鼻のステントの挿入デバイスまたは挿入装置を提供する。
a)
i)患者の体外で握持されるように構成された近位握持部、
ii)遠位中空管状部であって、握持部を使用して操作されるように構成され、かつ中空管状部の内部に配設されているステントを患者の副鼻腔もしくは鼻腔内に挿入するための大きさに作製されている、遠位中空管状部、
iii)中空管状部の内部での非膨張状態では、そのような副鼻腔もしくは鼻腔内への挿入に適した断面直径を有して配設され、膨張状態では、そのような腔内に存在するための大きさおよび形状に作製された通気性がある略管状の構造をもたらす、袖部付きの径方向に膨張可能な1つまたは複数のステント、および
iv)挿入装置の内部に配設されており、かつステントの1つまたは複数を中空管状部からそのような腔内へ送達するように構成された作動装置
を含む、洞または鼻のステントの挿入装置を設けるステップと、
b)握持部を操作して、遠位部をステント可能な(stentable)副鼻腔もしくは鼻腔内へ前進させるステップと、
c)作動装置を作動させて、ステントの1つまたは複数を中空管状部からそのようなステント可能な副鼻腔もしくは鼻腔内へ送達するステップと
を含む、洞または鼻の治療のための方法を提供する。
[0028]以下の詳細な説明はある実施形態を検討しており、限定の意味で用いられていない。本明細書における全ての重量、量、および比率が、特に断りのない限り、重量によるものである。
[0065]図1の基礎ステント110に類似した基礎ステントが、0.38mm直径の300シリーズ硬ステンレス鋼医療用ワイヤ(Malin Co.、オハイオ州クリーブランド)の長さから手作業で製造された。該ワイヤの端部は、UNITEK(商標)Model 101溶接機(3M Unitek、カリフォルニア州モンロビア)を使用して一緒に溶接された。完成した基礎ステントは、32°の支柱角度、2cmの支柱長さ、7つの山と7つの谷とを有して、直径約3cmであった。
[0066]図1のステント100に類似した、袖部付きステントが、実施例1の基礎ステントの周囲のポリエチレン薄膜の内面上に塗布されたLOCTITE(商標)3972光硬化接着剤(Henkel Corp.、コネチカット州ロッキーヒル)の層を有する、17.8um厚さの低密度ポリエチレン薄膜で、2.2cm×8cmの矩形片を包むことにより形成された。基礎ステントが径方向に十分に圧縮されて、ポリエチレン薄膜の端部が約1cm重ねられることが可能であるように、その円周を約7cmまで減少させた。接着剤が、DYMAX(商標)BLUEWAVE(商標)200UV硬化スポットランプ(Dymax Corp.、コネチカット州トリントン)下での10秒のUV照射を使用して、硬化された。
[0067]配合物1。40重量%の酢酸ビニルを含有しかつ190℃/2.16kgで8g/10分のメルトインデックスを有するポリ(エチレン−酢酸ビニル共重合体)(PEVA)ビース(Sigma−Aldrich Co.、ミズーリ州セントルイス)が使用されて、20mlのテトラヒドロフラン(THF)(Sigma−Aldrich Co.)中に1gのPEVAを溶解させることにより、5%(w/v)PEVA溶液を用意した。トリアムシノロン・アセトニド(TA)(Sigma−Aldrich Co.)の8mg部分が添加され、該溶液中に溶解させられた。
[0069]別個の実施において、配合物1溶液および配合物2の被覆溶液の1mL部分が、実施例2のステントのポリエチレン袖部上に塗布され、一晩空気乾燥することが可能にされた。該被覆は、4時間、40℃で、真空下でさらに乾燥させられた。
[0070]実施例2のステントによりかけられる径方向膨張力が、MTS QTest(商標)25圧縮試験システム(MTS Systems、ミネソタ州エデンプレイリー)を使用して測定された。該ステントは2つの平行段間で圧縮された。2つの段間の距離が1cmに達した時に径方向膨張力が記録され、15.2gであることが分かった。
[0071]TA試料が40:60の水/メタノール溶媒系中で溶解され、10μlの試料注入、1m/分の流量、および250nmでのUV検出を用いて、Agilent Eclipse XDB−C18 4.6 X 150mmカラムを備え付けられているAgilent Technologies(商標)1200シリーズ高速液体クロマトグラフィ(HPLC)機器を使用して、分析された。様々な希釈で一連の標準溶液を使用して、標準曲線が確立された。
[0072]薬剤が被覆された実施例2のステントを40mLのDI水中に浸すことおよび該浸されたステントを37℃で保温することにより、37℃の脱イオン(DI)水において、薬剤溶出調査が実施された。所定の時間で、1mLの上澄み試料が引き出され、HPLCを使用して、TA濃度が測定された。次いで、累積薬物放出が算出された。薬剤が被覆されたステントが三重に評価された。結果は、1週間後、TAの約80%が、配合物1で被覆されたステントから溶出し、TAの55%が、配合物2で被覆されたステントから溶出したことを示した。該結果は図19に示されている。配合物1は、配合物2と比較して、より十分な薬剤「バースト」(drug burst)効果をもたらした。配合物2は、配合物1に比べて、より一定の、より長続きする可能性のある薬剤投与をもたらした。
[第1の態様] 袖部付きで、径方向に膨張可能であり、膨張状態では、副鼻腔もしくは鼻腔内に存在するための大きさおよび形状に作製された通気性がある略管状の構造をもたらし、非膨張状態では、上記腔内への挿入に適した断面直径を有する、ステント。
b)遠位中空管状部であって、上記握持部を使用して操作されるように構成され、かつ上記中空管状部の内部に配設されているステントを患者の副鼻腔もしくは鼻腔内に挿入するための大きさに作製されている、遠位中空管状部と、
c)上記中空管状部の内部での非膨張状態では、上記副鼻腔もしくは鼻腔内への挿入に適した断面直径を有して配設され、膨張状態では、上記腔内に存在するための大きさおよび形状に作製された通気性がある略管状の構造をもたらす、袖部付きの、径方向に膨張可能な1つまたは複数のステントと、
d)上記挿入デバイスの内部に配設されており、かつ上記中空管状部から上記腔内へ上記ステントの1つまたは複数を送達するように構成された作動装置と
を含む、洞または鼻のステント挿入デバイス。
a)
i)患者の体外で握持されるように構成された近位握持部、
ii)遠位中空管状部であって、上記握持部を使用して操作されるように構成され、かつ上記中空管状部の内部に配設されているステントを患者の副鼻腔もしくは鼻腔内に挿入するための大きさに作製されている、遠位中空管状部、
iii)上記中空管状部の内部での非膨張状態では、上記副鼻腔もしくは鼻腔内への挿入に適した断面直径を有して配設され、膨張状態では、上記腔内に存在するための大きさおよび形状に作製された通気性がある略管状の構造をもたらす、袖部付きの径方向に膨張可能な1つまたは複数のステント、および
iv)上記挿入装置の内部に配設されており、かつ上記ステントの1つまたは複数を上記中空管状部から上記腔内へ送達するように構成された作動装置
を含む、洞または鼻のステント挿入装置を設けるステップと、
b)上記握持部を操作して、遠位部をステント可能な副鼻腔もしくは鼻腔内へ前進させるステップと、
c)上記作動装置を作動させて、上記ステントの1つまたは複数を上記中空管状部から上記ステント可能な副鼻腔もしくは鼻腔内へ送達するステップと
を含む、洞または鼻の治療のための方法。
[第7の態様] 上記袖部は生分解性である、請求項5に記載のステント、デバイス、または方法。
[第9の態様] 上記基礎ステントは、ジグザグ構造に曲げられているワイヤ輪を含む、請求項5に記載のステント、デバイス、または方法。
[第11の態様] 上記袖部は、副鼻腔もしくは鼻腔内への設置後、上記基礎ステントにより引張状態に保持される、請求項5に記載のステント、デバイス、または方法。
[第14の態様] 上記基礎ステントまたは上記袖部は、アクリロニトリル・ブタジエン・スチレン(ABS)、ポリアクリル酸塩、ポリメタクリル酸、ナイロン、ポリオレフィン、ホスホリルコリン(PC)、ポリスチレン、ポリカーボネート、ポリエステル、ポリスルホン、ポリエーテルスルホン、ポリエーテル・ブロック・アミド、熱可塑性エラストマー、フッ素化ポリマー、またはシリコーンを含む、請求項5に記載のステント、デバイス、または方法。
[第17の態様] 上記基礎ステントまたは上記袖部は多糖を含む、請求項5に記載のステント、デバイス、または方法。
[第19の態様] 上記袖部は薬剤溶出性である、請求項5に記載のステント、デバイス、または方法。
[第21の態様] 上記ステントは生分解性である、請求項1から20のいずれかに記載のステント、デバイス、または方法。
[第23の態様] 上記袖部は無孔表面を有する、請求項1から22のいずれかに記載のステント、デバイス、または方法。
[第25の態様] 上記袖部は不織である、請求項1から24のいずれかに記載のステント、デバイス、または方法。
[第27の態様] 上記ステントは径方向に圧縮性であり、径方向に弾性である、請求項1から26のいずれかに記載のステント、デバイス、または方法。
[第30の態様] 上記薬剤は、アンジオテンシン変換酵素(ACE)阻害剤、アンジオテンシン受容体遮断薬(ARB)、抗ヒスタミン剤、コルチコステロイド、非ステロイド性抗炎症薬、キマーゼ阻害剤、シクロオキシゲナーゼ−2(COX−2)阻害剤、充血除去剤、マトリクス・メタロプロテイナーゼ(MMP)阻害剤、粘液溶解薬、オピオイド、治療的ポリマー、またはそれらの組合せを含む、請求項29に記載のステント、デバイス、または方法。
[第33の態様] 上記薬剤はフルチカゾンを含む、請求項29に記載のステント、デバイス、または方法。
[第35の態様] 上記薬剤はトリアムシノロンを含む、請求項29に記載のステント、デバイス、または方法。
[第38の態様] 上記ステントは篩骨洞内に存在するための大きさに作製されている、請求項1から37のいずれかに記載のステント、デバイス、または方法。
[第40の態様] 無菌包装状態にある複数の異なる大きさに作製されている袖部をさらに含む、請求項1から39のいずれかに記載のステント、デバイス、または方法。
Claims (8)
- 径方向に膨張可能であり、膨張状態では、副鼻腔もしくは鼻腔内に存在するための大きさおよび形状に作製された通気性がある略管状の構造をもたらし、非膨張状態では、前記腔内への挿入に適した断面直径を有するステントであって、
前記ステントは径方向に膨張可能な内側の基礎ステントと、前記基礎ステントの少なくとも部分を抑制して前記基礎ステントによる膨張や外向きの力を制限する外側の袖部とを含む、
ステント。 - 前記基礎ステントまたは前記袖部はワイヤを含む、請求項1に記載のステント。
- 前記袖部は前記基礎ステントに固定されている、請求項1又は2に記載のステント。
- 前記袖部は、副鼻腔もしくは鼻腔内への設置後、前記基礎ステントにより引張状態に保持される、請求項1から3のいずれか一項に記載のステント。
- 前記袖部は滑らかな表面を有する、請求項1から4のいずれか一項に記載のステント。
- 前記袖部は無孔表面を有する、請求項1から5のいずれか一項に記載のステント。
- 前記袖部は不織である、請求項1から6のいずれか一項に記載のステント。
- 前記ステントは径方向に弾性を有するため圧縮可能である、請求項1から7のいずれか一項に記載のステント。
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US10912663B2 (en) * | 2014-11-26 | 2021-02-09 | S.T.S. Medical Ltd. | Shape change structure for treatment of nasal conditions including sinusitis |
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AU2016312679A1 (en) | 2018-03-08 |
US20180235752A1 (en) | 2018-08-23 |
EP3340930A1 (en) | 2018-07-04 |
US20240000562A1 (en) | 2024-01-04 |
US11759314B2 (en) | 2023-09-19 |
KR20180044373A (ko) | 2018-05-02 |
CA2996539A1 (en) | 2017-03-02 |
EP3340930B1 (en) | 2024-07-03 |
WO2017035485A1 (en) | 2017-03-02 |
JP2018528808A (ja) | 2018-10-04 |
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