Blend, cross-linkable poly(propylene fumarate) for immobilization and controlled drug delivery
    1.
    发明授权
    Blend, cross-linkable poly(propylene fumarate) for immobilization and controlled drug delivery 有权
    用于固定和控制药物递送的共混物,可交联的聚(富马酸丙烯酯)

    公开(公告)号:US06884432B2

    公开(公告)日:2005-04-26

    申请号:US10423209

    申请日:2003-04-25

    摘要: Microspheres for controlled release of a bioactive agent are disclosed, and in particular, blend, cross-linkable poly(propylene fumarate) for immobilization and controlled drug delivery. The microsphere includes poly(propylene fumarate), a polymeric material other than poly(propylene fumarate) (e.g., poly(lactic-co-glycolic acid)), and a bioactive agent. The bioactive agent is selected depending on the physiological effect desired. For example, in bone regeneration applications, the bioactive agent may be selected from osteoinductive agents, peptides, growth hormones, osteoconductive agents, cytokines and mixtures thereof. The bioactive agent is dispersed in the microsphere, the microsphere has a diameter in the range of 1 to 300 micrometers, the poly(propylene fumarate) and poly(lactic-co-glycolic acid) are distributed in the microsphere, and the microsphere releases the bioactive agent in a sustained manner after an initial burst release. The microspheres may be covalently attached to a poly(propylene fumarate) scaffold for tissue regeneration applications in which the bioactive agent is released from the scaffold.

    摘要翻译: 公开了用于控制释放生物活性剂的微球,并且特别地,用于固定和控制药物递送的共混物,可交联聚(富马酸丙烯酯)。 微球包括聚(丙烯富马酸盐),聚(丙烯富马酸酯)以外的聚合物(例如聚(乳酸 - 共 - 乙醇酸))和生物活性剂。 取决于所需的生理效果来选择生物活性剂。 例如,在骨再生应用中,生物活性剂可以选自骨诱导剂,肽,生长激素,骨诱导剂,细胞因子及其混合物。 生物活性剂分散在微球中,微球的直径范围为1〜300微米,聚(丙烯富马酸)和聚(乳酸 - 共 - 乙醇酸)分布在微球中,微球释放出 初始爆发后持续的生物活性剂。 微球可以共价连接到用于组织再生应用的聚(丙烯富马酸酯)支架中,其中生物活性剂从支架中释放。

    Hydroxyapatite grafted fumarate based macromers for biodegradable composites
    2.
    发明授权
    Hydroxyapatite grafted fumarate based macromers for biodegradable composites 失效
    羟基磷灰石接枝富马酸盐的大分子单体用于可生物降解的复合材料

    公开(公告)号:US07642300B2

    公开(公告)日:2010-01-05

    申请号:US10562591

    申请日:2004-06-29

    IPC分类号: C08F297/02 C08F297/00

    摘要: A composition is disclosed which comprises (i) a macromer prepared by reacting an unsaturated diacid having a carbon-carbon double bond and a saturated diacid, and (ii) a bioactive ceramic grafted to the macromer. In one embodiment, the unsaturated diacid having a carbon-carbon double bond is fumaric acid, the saturated diacid is compatible with fumaric acid and poly(propylene fumarate) such as succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid and mixtures thereof, and the bioactive ceramic is hydroxyapatite. In another embodiment, hydroxyapatite is grafted with a biodegradable and crosslinkable macromer comprising silane units alternating with furnarate and adipate units.

    摘要翻译: 公开了一种组合物,其包含(i)通过使具有碳 - 碳双键的不饱和二酸和饱和二酸反应制备的大分子单体,和(ii)接枝到大分子单体上的生物活性陶瓷。 在一个实施方案中,具有碳 - 碳双键的不饱和二酸是富马酸,饱和二酸与富马酸和富马酸(丙烯酸富马酸)如琥珀酸,戊二酸,己二酸,庚二酸,辛二酸,壬二酸 酸,癸二酸及其混合物,生物活性陶瓷为羟基磷灰石。 在另一个实施方案中,羟基磷灰石用可生物降解和可交联的大分子单体接枝,其包含与富马酸和己二酸酯单元交替的硅烷单元。

    Hydrogel Porogents for Fabricating Biodegradable Scaffolds
    3.
    发明申请
    Hydrogel Porogents for Fabricating Biodegradable Scaffolds 审中-公开
    用于制造可生物降解支架的水凝胶制剂

    公开(公告)号:US20080206308A1

    公开(公告)日:2008-08-28

    申请号:US10568058

    申请日:2004-08-27

    CPC分类号: A61L27/56 A61L27/48 A61L27/58

    摘要: Hydrogel microparticles with entrapped liquid are used as the porogen to reproducibly form interconnected pore networks in a porous scaffold. In one embodiment, a biodegradable unsaturated polymer, a crosslinking agent, and a porogen comprising biodegradable hydrogel microparticles are mixed together and allowed to form a porous scaffold in an mold or in a body cavity. Example biodegradable unsaturated polymers include poly(propylene fumarate) and poly(e-caprolactone-fumarate). The cosslinking agent may be a free radical initiator, or may include a free radical initiator and a monomer capable of addition polymerization. Example hydrogel microparticles include uncrosslinked or crosslinked collagen , an uncrosslinked or crosslinked collagen derivative, and an uncrosslinked or crosslinked synthetic biodegradable polymer such as oligo(poly(ethylene glycol) fumarate).

    摘要翻译: 使用具有捕获液体的水凝胶微粒作为致孔剂,以在多孔支架中可再现形成互连的孔网络。 在一个实施方案中,将可生物降解的不饱和聚合物,交联剂和包含可生物降解的水凝胶微粒的致孔剂混合在一起并允许在模具或体腔中形成多孔支架。 可生物降解的不饱和聚合物的实例包括聚(丙烯酸富马酸酯)和聚(ε-己内酯 - 富马酸酯)。 该切断剂可以是自由基引发剂,或者可以包括自由基引发剂和能够进行加成聚合的单体。 示例性水凝胶微粒包括未交联或交联的胶原蛋白,未交联或交联的胶原衍生物,以及未交联或交联的合成生物可降解聚合物,例如寡(聚(乙二醇)富马酸酯)。

    Block copolymers of polycarpolactone and poly (propylene funarate)
    4.
    发明授权
    Block copolymers of polycarpolactone and poly (propylene funarate) 有权
    聚内酯和聚(丙烯丙烯酸酯)的嵌段共聚物

    公开(公告)号:US07816461B2

    公开(公告)日:2010-10-19

    申请号:US11718962

    申请日:2005-11-18

    IPC分类号: C08G63/91

    摘要: Poly(propylene fumarate) is copolymerized with poly(caprolactone) diol to produce a block copolymer of poly(propylene fumarate) and poly(caprolactone). The biocompatible and bioresorbable block copolymer of poly(propylene fumarate) and poly(caprolactone) is useful in the fabrication of injectable and in-situ hardening scaffolds for tissue and/or skeletal reconstruction. The block copolymer can be crosslinked by redox or photo-initiation, with or without an additional crosslinker. Thus, the copolymer is both self-crosslinkable (without the use of any crosslinkers) and photocrosslinkable (in the presence of photons such as UV light).

    摘要翻译: 聚(丙烯酸富马酸酯)与聚(己内酯)二醇共聚以制备聚(丙烯酸富马酸酯)和聚(己内酯)的嵌段共聚物。 聚(丙烯酸富马酸酯)和聚(己内酯)的生物相容性和生物可吸收的嵌段共聚物可用于制备用于组织和/或骨骼重建的可注射和原位硬化支架。 嵌段共聚物可以通过氧化还原或光引发交联,具有或不具有另外的交联剂。 因此,共聚物既可自交联(不使用任何交联剂)和光可交联(在诸如紫外光的光子存在下)。

    Hydrophilic/hydrophobic polymer networks based on poly(caprolactone fumarate), poly(ethylene glycol fumarate), and copolymers thereof
    6.
    发明授权
    Hydrophilic/hydrophobic polymer networks based on poly(caprolactone fumarate), poly(ethylene glycol fumarate), and copolymers thereof 有权
    基于聚(己内酯富马酸酯),聚(乙二醇富马酸酯)及其共聚物的亲水/疏水聚合物网络

    公开(公告)号:US08912247B2

    公开(公告)日:2014-12-16

    申请号:US11912188

    申请日:2006-04-28

    摘要: Improved methods for preparing polyethylene glycol fumarate) are disclosed. Methods for chemically crosslinking or photocross-linking hydrophilic polyethylene glycol fumarate) with hydrophobic polymers such as poly(propylene fumarate) (PPF) and poly(caprolactone fumarate) (PCLF) to form various hydrogels (FIG. 1) with controllable hydrophilicity are also disclosed. The hydrogels are useful in the fabrication of injectable and in-situ hardening scaffolds for application in skeletal reconstruction. An injectable material including the hydrogels may be useful in controlled drug release.

    摘要翻译: 公开了改进的制备聚乙二醇富马酸盐的方法。 还公开了亲水聚乙二醇富马酸酯与疏水性聚合物如聚(富马酸丙烯酯)(PPF)和聚(己内酯富马酸酯)(PCLF)的化学交联或光交联以形成具有可控亲水性的各种水凝胶(图1)的方法) 。 水凝胶可用于制造用于骨骼重建的可注射和原位硬化支架。 包含水凝胶的可注射材料可用于受控药物释放。

    BIOCOMPATIBLE POLYCAPROLACTONE FUMARATE FORMULATIONS
    8.
    发明申请
    BIOCOMPATIBLE POLYCAPROLACTONE FUMARATE FORMULATIONS 审中-公开
    生物可溶性多环芳酮FUMARATE配方

    公开(公告)号:US20140099278A1

    公开(公告)日:2014-04-10

    申请号:US14009987

    申请日:2012-04-04

    IPC分类号: A61L27/18 A61L27/26

    摘要: A polycaprolactone fumarate polymer useful as a matrix material for a biocompatible scaffold for tissue engineering applications is disclosed. The polycaprolactone fumarate polymer can be prepared by reacting caprolactone with an alkane polyol to prepare a polycaprolactone precursor, and then reacting the polycaprolactone precursor with fumaric acid or a salt thereof to prepare the polycaprolactone fumarate polymer. The use of an alkane diol, such as 1,2-propanediol, provides a linear polycaprolactone diol precursor. The use of an alkane triol, such as glycerol, provides a branched polycaprolactone triol precursor. The biocompatible polycaprolactone fumarate formulation releases no diethylene glycol or other undesirable byproducts during degradation.

    摘要翻译: 公开了可用作组织工程应用的生物相容性支架的基质材料的聚己内酯富马酸酯聚合物。 聚己内酯富马酸酯聚合物可以通过使己内酯与烷烃多元醇反应制备聚己内酯前体,然后使聚己内酯前体与富马酸或其盐反应制备富马酸聚己内酯聚合物。 使用诸如1,2-丙二醇的烷二醇提供线型聚己内酯二醇前体。 使用烷烃三醇如甘油提供支链聚己内酯三醇前体。 生物相容性聚己内酯富马酸盐配方在降解期间不释放二甘醇或其它不希望的副产物。