Biodegradable composites for internal medical use
    32.
    发明授权
    Biodegradable composites for internal medical use 失效
    用于内部医疗使用的生物可降解复合材料

    公开(公告)号:US5108755A

    公开(公告)日:1992-04-28

    申请号:US345034

    申请日:1989-04-27

    CPC分类号: A61L27/58 A61L27/46 A61L27/48

    摘要: A family of composites suitable for use as materials of construction for implantable medical devices is disclosed. In the most preferred embodiment, the substrate polymer is an ortho ester polymer formed by the reaction of a ketene acetal having a functionality of two or more with a polyol. Also in the most preferred embodiment, the reinforcement material in the composites is calcium-sodium metaphosphate ("CSM") fibers. In other embodiments, the composites may replace either (but not both) of the substrate or the reinforcement with materials of the art.

    摘要翻译: 公开了适用于可植入医疗装置的结构材料的复合材料系列。 在最优选的实施方案中,底物聚合物是通过具有两个或多个官能度的乙烯酮缩醛与多元醇反应形成的原酸酯聚合物。 同样在最优选的实施方案中,复合材料中的增强材料是偏碳酸钙(“CSM”)纤维。 在其他实施方案中,复合材料可以用本领域的材料替代基材或增强材料(但不是两者)。

    Ortho and thio-ortho ester polymer
    33.
    发明授权
    Ortho and thio-ortho ester polymer 失效
    正辛酯和硫代原酸酯聚合物

    公开(公告)号:US5013821A

    公开(公告)日:1991-05-07

    申请号:US348059

    申请日:1989-06-15

    IPC分类号: A61K9/20 C08G75/00

    CPC分类号: C08G75/00 A61K9/204

    摘要: Biodegradable ortho ester polymers based on mono- and poly-thiols are provided that are useful for making biodegradable sustained release agent dispensers and which contain at least one of the mer units (I), (II), (III) or (IV) ##STR1## wherein X is a quadrivalent organic grouping, A and B are independently selected from the group consisting of hydrogen and lower alkyl, and R is hydrocarbyl or oxyhydrocarbyl of 1 to 14 carbon atoms, if oxyhydrocarbyl, containing 1 to 4 oxy groups, and may be either aliphatic or aryl, unsubstituted or substituted with one or more lower alkyl, amino, nitro or halogen moieties.

    摘要翻译: 提供了基于单硫代硫醇和多硫醇的可生物降解的原酸酯聚合物,其可用于制备可生物降解的持续释放剂分配器,并且其含有至少一种mer单元(I),(II),(III)或(IV) (I)其中X是四价有机基团,A和B独立地选自氢和低级烷基,R是 烃基或含1至14个碳原子的氧代烃基,如果是含有1-4个氧基的羟基烃基,并且可以是未取代的或被一个或多个低级烷基,氨基,硝基或卤素部分取代的脂族或芳基。

    Preparation of ketene acetals
    34.
    发明授权
    Preparation of ketene acetals 失效
    乙烯酮缩醛的制备

    公开(公告)号:US4513143A

    公开(公告)日:1985-04-23

    申请号:US445938

    申请日:1982-12-01

    CPC分类号: C07D493/10 C07C41/48

    摘要: Rearrangement of allyl acetals to ketene acetals is disclosed. The rearrangement is accomplished by mixing the allyl acetal with a solution of an alkali metal lower alkyl in a water-soluble primary amine. After several hours contact with the allyl acetal with the solution ketene acetal formed during the contact is separated from the reaction mixture.

    摘要翻译: 公开了烯丙基缩醛向乙烯酮缩醛的重排。 通过将烯丙基缩醛与碱金属低级烷基的溶液混合在水溶性伯胺中来实现重排。 与接触之后形成的溶液乙烯酮缩醛与烯丙基缩醛接触数小时后,与反应混合物分离。

    Novel orthoester polymers and orthocarbonate polymers
    35.
    发明授权
    Novel orthoester polymers and orthocarbonate polymers 失效
    新型原酸酯聚合物和原碳酸酯聚合物

    公开(公告)号:US4180646A

    公开(公告)日:1979-12-25

    申请号:US883123

    申请日:1978-03-03

    摘要: The invention concerns orthoester and orthocarbonate polymers having a repeating mer comprising a hydrocarbon radical and a symmetrical dioxycarbon unit of the general formula: ##STR1## wherein R.sub.1 is a multivalent hydrocarbon radical, R.sub.2 and R.sub.3 are hydrocarbon radicals with at least one of R.sub.2 or R.sub.3 bonded to the dioxycarbon through an oxygen linkage, and which polymers are synthesized by reacting a polyol with an orthoester or orthocarbonate. The polymers are useful for making articles of manufacture, including devices and coatings for delivering beneficial agents.

    摘要翻译: 本发明涉及具有重复mer的原酸酯和原碳酸酯聚合物,其具有如下通式的烃基和对称二氧代碳单元:其中R1是多价烃基,R2和R3是具有R2或R3中至少一个的烃基 通过氧键与二氧碳原子键合,并且通过多元醇与原酸酯或原碳酸酯反应合成哪些聚合物。 聚合物可用于制造制品,包括用于递送有益试剂的装置和涂层。

    System for delivering agent to environment of use over prolonged time
    36.
    发明授权
    System for delivering agent to environment of use over prolonged time 失效
    长时间运送代理使用环境的系统

    公开(公告)号:US4180064A

    公开(公告)日:1979-12-25

    申请号:US750701

    申请日:1976-12-15

    摘要: A device for the controlled continuous administration of an active agent to an environment of use is disclosed. The device comprises a body of erodible agent release rate controlling material containing an agent dispersed therethrough; the rate controlling material is a hydrophobic poly(carboxylic acid) having one ionizable carboxylic hydrogen for each 8 to 12 carbon atoms, which material erodes at a controlled and continuous rate over a prolonged period of time in response to the environment by a process of carboxylic hydrogen ionization, thereby releasing the dispersed agent at a controlled rate over a prolonged period of time.

    摘要翻译: 公开了一种将活性剂受控连续施用于使用环境的装置。 该装置包括含有分散在其中的试剂的易侵蚀剂释放速率控制材料体; 速率控制材料是具有每个8至12个碳原子的一个可离子化羧基氢的疏水性聚(羧酸),该材料以受控和连续的速率在长时间内响应环境通过羧酸过程腐蚀 氢离子化,从而以较长的时间以受控的速率释放分散剂。

    Device for delivery of useful agent
    38.
    发明授权
    Device for delivery of useful agent 失效
    用于递送有用代理的设备

    公开(公告)号:US4014987A

    公开(公告)日:1977-03-29

    申请号:US591443

    申请日:1975-06-30

    IPC分类号: A61K9/00 A61K47/00 A61K9/02

    CPC分类号: A61K9/0036

    摘要: A device for the controlled continuous administration of an active agent to an environment of use is disclosed. The device comprises a body of erodible agent release rate controlling material containing an agent dispersed therethrough; the rate controlling material is a hydrophobic poly(carboxylic acid) having one ionizable carboxylic hydrogen for each 8 to 12 carbon atoms, which material erodes at a controlled and continuous rate over a prolonged period of time in response to the environment by a process of carboxylic hydrogen ionization, thereby releasing the dispersed agent at a controlled rate over a prolonged period of time.

    摘要翻译: 公开了一种用于将活性剂控制连续施用于使用环境的装置。 该装置包括含有分散在其中的试剂的易侵蚀剂释放速率控制材料体; 速率控制材料是具有每个8至12个碳原子的一个可离子化羧基氢的疏水性聚(羧酸),该材料以受控和连续的速率在长时间内响应环境通过羧酸过程腐蚀 氢离子化,从而以较长的时间以受控的速率释放分散剂。

    PEG-Poly(Ortho Ester) Graft Copolymers and Pharmaceutical Compositions
    40.
    发明申请
    PEG-Poly(Ortho Ester) Graft Copolymers and Pharmaceutical Compositions 审中-公开
    PEG-Poly(Ortho Ester)接枝共聚物和药物组合物

    公开(公告)号:US20090048151A1

    公开(公告)日:2009-02-19

    申请号:US12256408

    申请日:2008-10-22

    申请人: Jorge Heller

    发明人: Jorge Heller

    CPC分类号: A61K9/0048 A61K47/34

    摘要: This invention relates to graft copolymer delivery vehicles comprising a polyethyleneglycol-poly(ortho ester), and to controlled release pharmaceutical compositions comprising the delivery vehicle and an active agent. The graft copolymer delivery vehicles may be thermogels graft copolymers. The pharmaceutical compositions may be in the form of a topical, syringable, or injectable formulation for local controlled delivery of the active agent.

    摘要翻译: 本发明涉及包含聚乙二醇 - 聚(原酸酯)的接枝共聚物递送载体,以及包含递送载体和活性剂的控释药物组合物。 接枝共聚物递送载体可以是热凝胶接枝共聚物。 药物组合物可以是局部,注射的或可注射的制剂的形式,用于局部控制递送活性剂。