Absorbable structures for ligament and tendon repair
    1.
    发明授权
    Absorbable structures for ligament and tendon repair 失效
    用于韧带和肌腱修复的可吸收结构

    公开(公告)号:US5514181A

    公开(公告)日:1996-05-07

    申请号:US314986

    申请日:1994-09-29

    摘要: A fully absorbable prosthesis (1) for the repair of damaged ligaments and/or tendons in the form of a multilayer spiral roll comprising the following spiral layers: a foraminous layer (2) of a synthetic bioabsorbable material; a bioabsorbable film (3); and a layer (4) of a bioabsorbable biopolymer sponge. The invention also provides a method of making such a prosthesis, comprising the steps of: providing a laminate of a foraminous layer of bioabsorbable material and a bioabsorbable film; coating the laminate with a layer of an aqueous gel comprising a bioabsorbable polymer; rolling up the laminate and the gel layer into a spiral roll, followed by drying the gel to form a layer of bioabsorbable sponge. The foraminous layer (2) preferably comprises a synthetic bioabsorbable polymer having high tensile strength. The bioabsorbable film (3) and sponge layer (4) preferably comprise a chemotactic biopolymer such as collagen.

    摘要翻译: 一种完全可吸收的假体(1),用于修复包括以下螺旋层的多层螺旋卷形式的受损韧带和/或腱:一种合成的生物可吸收材料的多孔层(2) 生物可吸收膜(3); 和生物可吸收生物聚合物海绵的层(4)。 本发明还提供了一种制造这种假体的方法,包括以下步骤:提供生物可吸收材料的多孔层和生物可吸收膜的层压体; 用包含生物可吸收聚合物的水性凝胶层涂覆层压体; 将层压体和凝胶层卷起成螺旋卷,然后干燥凝胶以形成生物可吸收海绵层。 多孔层(2)优选包含具有高拉伸强度的合成的生物可吸收聚合物。 生物可吸收膜(3)和海绵层(4)优选包含趋化性生物聚合物如胶原蛋白。

    Absorbable implant materials having controlled porosity
    2.
    发明授权
    Absorbable implant materials having controlled porosity 失效
    具有受控孔隙率的可吸收植入材料

    公开(公告)号:US5869080A

    公开(公告)日:1999-02-09

    申请号:US653890

    申请日:1996-05-28

    摘要: Absorbable implant materials having controlled porosity are formed by a method comprising the steps of: providing a dispersion of a bioabsorbable polymer, such as collagen, in a first solvent, such as water; adding particles of a second material, e.g. frozen water droplets or ice particles to the dispersion; followed by freezing the dispersion to form a frozen dispersion having the particles embedded therein, and removing both the first solvent and the second material from the frozen dispersion by freeze-drying or solvent extraction to leave the porous implant material. The invention also encompasses the use of such implant materials for wound healing applications.

    摘要翻译: 具有受控孔隙率的可吸收植入材料通过包括以下步骤的方法形成:将生物可吸收聚合物如胶原的分散体提供在第一溶剂如水中; 添加第二材料的颗粒,例如。 将冷冻水滴或冰粒分散; 然后冷冻分散体以形成其中嵌入有颗粒的冷冻分散体,并且通过冷冻干燥或溶剂萃取从冷冻分散体中除去第一溶剂和第二材料以留下多孔植入材料。 本发明还包括这种植入材料用于伤口愈合应用的用途。

    Method of making absorbable structures for ligament and tendon repair
    3.
    发明授权
    Method of making absorbable structures for ligament and tendon repair 失效
    制造用于韧带和腱修复的可吸收结构的方法

    公开(公告)号:US5595621A

    公开(公告)日:1997-01-21

    申请号:US485244

    申请日:1995-06-07

    摘要: A fully absorbable prosthesis (1) for the repair of damaged ligaments and/or tendons in the form of a multilayer spiral roll comprising the following spiral layers: a foraminous layer (2) of a synthetic bioabsorbable material; a bioabsorbable film (3); and a layer (4) of a bioabsorbable biopolymer sponge. The invention also provides a method of making such a prosthesis, comprising the steps of: providing a laminate of a foraminous layer of bioabsorbable material and a bioabsorbable film; coating the laminate with a layer of an aqueous gel comprising a bioabsorbable polymer; rolling up the laminate and the gel layer into a spiral roll, followed by drying the gel to form a layer of bioabsorbable sponge. The foraminous layer (2) preferably comprises a synthetic bioabsorbable polymer having high tensile strength. The bioabsorbable film (3) and sponge layer (4) preferably comprise a chemotactic biopolymer such as collagen.

    摘要翻译: 一种完全可吸收的假体(1),用于修复包括以下螺旋层的多层螺旋卷形式的受损韧带和/或腱:一种合成的生物可吸收材料的多孔层(2) 生物可吸收膜(3); 和生物可吸收生物聚合物海绵的层(4)。 本发明还提供了一种制造这种假体的方法,包括以下步骤:提供生物可吸收材料的多孔层和生物可吸收膜的层压体; 用包含生物可吸收聚合物的水性凝胶层涂覆层压体; 将层压体和凝胶层卷起成螺旋卷,然后干燥凝胶以形成生物可吸收海绵层。 多孔层(2)优选包含具有高拉伸强度的合成的生物可吸收聚合物。 生物可吸收膜(3)和海绵层(4)优选包含趋化性生物聚合物如胶原蛋白。

    Methods for making biopolymer sponge tubes
    7.
    发明授权
    Methods for making biopolymer sponge tubes 有权
    生物聚合物海绵管的制备方法

    公开(公告)号:US06835336B2

    公开(公告)日:2004-12-28

    申请号:US09887742

    申请日:2001-06-22

    申请人: Paul W. Watt

    发明人: Paul W. Watt

    IPC分类号: B29C3936

    摘要: The invention provides biopolymer sponge tubes closed at one end for use in surgery. The preferred biopolymer iscollagen. The biopolymer sponge tubes are prepared by forming an aqueous dispersion of the biopolymer, introducing the dispersion into tube-shaped moulds, freezing the dispersion in the moulds to form a shaped, aqueous dispersion, followed by freeze-drying the frozen aqueous dispersion. The tubes are fitted over endoscopic surgical staplers to provide improved sealing of stapled tissues, especially for air-tight sealing in lung resections.

    摘要翻译: 本发明提供在一端封闭以用于手术的生物聚合物海绵管。 优选的生物聚合物是胶原。 生物聚合物海绵管通过形成生物聚合物的水性分散体制备,将分散体引入管状模具中,将模具中的分散体冷冻以形成成型的水分散体,然后冷冻干燥冷冻的水分散体。 这些管装配在内窥镜外科缝合器上,以提供缝合组织的改进的密封,特别是用于肺切除术中的气密密封。

    Coated bioabsorbable beads for wound treatment
    8.
    发明授权
    Coated bioabsorbable beads for wound treatment 有权
    用于伤口处理的涂覆的生物可吸收珠

    公开(公告)号:US06713083B1

    公开(公告)日:2004-03-30

    申请号:US09142814

    申请日:1999-05-21

    IPC分类号: A61K970

    摘要: The invention provides a material for use in a wound dressing or wound implant, the material comprising a plurality of beads, wherein each bead comprises a porous core of a first bioabsorbable material and a substantially non-porous layer of a second bioabsorbable material around the core. The porous core is preferably a sponge formed by freeze-drying a liquid suspension of the first bioabsorbable material. The preferred diameter of the beads is 0.1-4.0 mm, and the beads are preferably dispersed in a liquid or solid matrix. The invention also provides a method of making beads for use in the materials of the invention.

    摘要翻译: 本发明提供了用于伤口敷料或伤口植入物的材料,该材料包括多个珠粒,其中每个珠粒包含第一生物可吸收材料的多孔芯和围绕该芯的第二生物可吸收材料的基本上无孔的层 。 多孔芯优选是通过冷冻干燥第一生物可吸收材料的液体悬浮液形成的海绵。 珠的优选直径为0.1-4.0mm,并且珠优选分散在液体或固体基质中。 本发明还提供了制备用于本发明的材料的珠粒的方法。