JP6703010B2 - 生体吸収性ポリマと抗菌剤とからなる植込型医療装置用ポリマカバー、およびその製造方法 - Google Patents
生体吸収性ポリマと抗菌剤とからなる植込型医療装置用ポリマカバー、およびその製造方法 Download PDFInfo
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Description
第3例において、前記構造体は、管状形状を備え、リード線とカテーテルの少なくとも一方の周囲に適合し、リード線またはカテーテルは、植込型医療装置のハウジングから治療部位まで延びる、第1例のポリマ装置。
第6例において、前記構造体は、前記生体吸収性ポリマによって形成された複数のポリマ繊維を含む、第1〜5例のいずれか1つのポリマ装置。
第8例は、第1〜7例のいずれか1つに記載のポリマ装置に係る製造方法である。方法は、管状形状を形成する為に、第1生体吸収性ポリマをポリマ繊維として円柱表面上に電子スピニングすることと、円柱表面からポリマ繊維を取り除くことと、ポリマ繊維の少なくとも一部の間の間隙内に抗菌剤を配置することとを含む。
第10例において、抗菌剤は、第1生体吸収性ポリマと共に同軸上に電子スピニングされる、第9例の方法。
第12例において、抗菌剤を配置することは、抗菌剤をプラズマ増強化学蒸着すること、低圧化学蒸着すること、および大気圧蒸着することの少なくともいずれか1つを含む、第8〜11例のいずれか1つの方法。
第15例は、医療装置を植込むことによって生じる感染を防止する方法である。方法は、医療装置のハウジングを収容する為に形成された皮下ポケット内に少なくとも実質的にポリマ装置を導入することと、皮下ポケットに医療装置のハウジングを導入することとを含む。ポリマ装置は、生体吸収性ポリマ構造体と、ポリマ構造体から溶離するように構成された抗菌剤とを含む。ポリマ装置は、医療装置のハウジングの表面積の約20%未満を被覆する。
第17例において、ポリマ装置は、管状形状を備え、ポリマ装置を導入することは、少なくとも1本のリード線、または少なくとも1本のカテーテルを、ポリマ装置に通過させることと、少なくとも1本のリード線またはカテーテルが、植込型医療装置のハウジングから治療部位まで延びるように、少なくとも1本のリード線またはカテーテルを医療装置のハウジングに連結することとを含む、第15または16の方法。
第21例において、ポリマ装置を導入することは、皮下ポケットの周長の大部分にポリマ装置を適合させることを含む、第15例の方法。
第25例において、前記構造体は、生体吸収性ポリマで形成された複数のポリマ繊維を含む、第23例の植込型医療装置。
第27例において、前記抗菌剤は、生体吸収性ポリマ内に配置される、第23〜26例のいずれか1つの植込型医療装置。
実施例
以下の例は、例示であって限定することを意図してない。
生体吸収性ポリマ構造の準備
複数の生体吸収性ポリマの構造体は、標的表面上にテトラヒドロフラン(THF)およびジメチルホルムアミド(DMF)を様々な比で混合した溶剤に溶解したポリ(乳酸‐co‐グリコール酸)(PLGA)を電子スピニングすることによって準備した。THFとDMFの割合を変えることによって、様々な繊維サイズと繊維間間隙を作成した。繊維間の間隙を調節することによって、間隙内に入りこんだ抗菌剤の溶離速度を制御する。
Claims (6)
- 植込型医療装置のハウジングを収容する為に形成された皮下ポケット内に、感染を予防する為に植込まれるポリマ装置であって、前記ポリマ装置は、生体吸収性ポリマで形成された構造体であって、長尺形状を備えるとともに、前記皮下ポケットの周長に適合し、且つ、ポリマ繊維にて織成された索状体で形成されている前記構造体と、前記構造体から溶離する抗菌剤とからなり、前記皮下ポケットに植え込まれた際、前記植込型医療装置のハウジングの表面積の20%未満を覆う前記ポリマ装置を製造する方法は、
管状形状を形成する為に、第1生体吸収性ポリマをポリマ繊維として円柱表面上に電子スピニングする工程と、
前記円柱表面から前記ポリマ繊維を取り除く工程と、
前記ポリマ繊維の少なくとも一部の間の間隙内に抗菌剤を配置する工程と、からなり、前記抗菌剤を配置する工程は、プラズマ増強化学蒸着することと、低圧化学蒸着することのうちの少なくともいずれか一方を含む、ポリマ装置を製造する方法。 - 前記方法は、前記第1生体吸収性ポリマを電子スピニングする間に、前記円柱表面上に抗菌剤を電子スピニングすることをさらに含む、請求項1に記載の方法。
- 前記抗菌剤は、前記第1生体吸収性ポリマと共に同軸上に電子スピニングされる、請求項2に記載の方法。
- 前記方法は、前記ポリマ繊維と共に前記抗菌剤を前記円柱表面上にスプレイすることをさらに含む、請求項1に記載の方法。
- 前記抗菌剤を配置することは、前記ポリマ繊維を、前記抗菌剤を含む液体に浸漬することを含み、前記液体は、溶液、エマルジョン、および懸濁液のうちの少なくとも1つである、請求項1〜4のいずれか一項に記載の方法。
- 前記方法は、前記ポリマ繊維の間の前記間隙内に抗菌剤を配置した後、第2生体吸収性ポリマで前記ポリマ繊維をコートすることをさらに含む、請求項5に記載の方法。
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PCT/US2016/038032 WO2016205611A1 (en) | 2015-06-18 | 2016-06-17 | Polymer cover for an implantable medical device, the cover comprising a bioresorbable polymer and an antimicrobial agent, and a method for its production |
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DE102019213178A1 (de) * | 2019-08-30 | 2021-03-04 | Resorba Medical Gmbh | Polymerfolie und Polymertasche zur Aufnahme eines zu implantierenden medizinisch-technischen Produkts |
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