BIOABSORBABLE AND BIOCOMPATIBLE POLYURETHANES AND POLYAMIDES FOR MEDICAL DEVICES
    4.
    发明申请
    BIOABSORBABLE AND BIOCOMPATIBLE POLYURETHANES AND POLYAMIDES FOR MEDICAL DEVICES 有权
    可生物降解的生物成分聚氨酯和医用器件的聚酰胺

    公开(公告)号:US20120158127A1

    公开(公告)日:2012-06-21

    申请号:US13402391

    申请日:2012-02-22

    申请人: Rao S. Bezwada

    发明人: Rao S. Bezwada

    摘要: Absorbable polyurethanes, polyamides and polyester urethanes prepared from at least one compound selected from: or the corresponding diamines or diisocyanates thereof, wherein each X independently represents —CH2COO—, —CH(CH3)COO—, —CH2CH2OCH2COO—, —CH2CH2CH2CH2CH2COO—, —(CH2)yCOO— where y is 2 to 4 or 6 to 24, or —(CH2CH2O)z′CH2COO— where z′ is 2 to 24; each Y represents —COCH2O—, —COCH(CH3)O—, —COCH2OCH2CH2O—, —COCH2CH2CH2CH2CH2O—, —CO(CH2)mO— where m is 2 to 4 or 6 to 24, or —COCH2O(CH2CH2O)n— where n is 2 to 24; R′ is hydrogen, benzyl or straight-chained or branched alkyl; p is 1 to 4; and Rn represents one or more members selected from H, alkoxy, benzyloxy, aldehyde, halogen, carboxylic acid and —NO2, which is attached directly to an aromatic ring or attached through an aliphatic chain. Absorbable polymers prepared from these compounds are useful for drug delivery, tissue engineering, tissue adhesives, adhesion prevention and other implantable medical devices.

    摘要翻译: 由选自以下的至少一种化合物或其相应的二胺或二异氰酸酯制备的可吸收的聚氨酯,聚酰胺和聚酯聚氨酯,其中每个X独立地表示-CH 2 COO-, - CH(CH 3)COO-, - CH 2 CH 2 OCH 2 COO-, - CH 2 CH 2 CH 2 CH 2 COO-, - (CH2)yCOO-,其中y为2至4或6至24,或 - (CH2CH2O)z'CH2COO-,其中z'为2至24; 每个Y表示-COCH 2 O-,-COCH(CH 3)O - , - COCH 2 CH 2 CH 2 CH 2 - , - COCH 2 CH 2 CH 2 CH 2 CH 2 O - , - CO(CH 2)m O-,其中m为2至4或6至24,或-COCH 2 O(CH 2 CH 2 O) n为2〜24; R'是氢,苄基或直链或支链烷基; p为1〜4; 并且R n表示选自H,烷氧基,苄氧基,醛,卤素,羧酸和-NO 2中的一种或多种,​​其直接连接到芳环上或通过脂族链连接。 由这些化合物制备的可吸收聚合物可用于药物递送,组织工程,组织粘合剂,防止粘附和其他可植入医疗器械。

    Bioabsorbable and biocompatible polyurethanes and polyamides for medical devices
    5.
    发明授权
    Bioabsorbable and biocompatible polyurethanes and polyamides for medical devices 有权
    用于医疗器械的生物可吸收和生物相容性聚氨酯和聚酰胺

    公开(公告)号:US07772352B2

    公开(公告)日:2010-08-10

    申请号:US11255050

    申请日:2005-10-20

    申请人: Rao S. Bezwada

    发明人: Rao S. Bezwada

    摘要: Absorbable polyurethanes, polyamides and polyester urethanes prepared from at least one compound selected from: or the diamines and diisocyanates thereof, wherein each X represents a member independently selected from —CH2COO— (glycolic acid moiety), —CH(CH3)COO— (lactic acid moiety), —CH2CH2OCH2COO— (dioxanone), —CH2CH2CH2CH2CH2COO— (caprolactone moiety), —(CH2)yCOO— where y is one of the numbers 2, 3, 4 or 6-24 inclusive, and —(CH2CH2O)z′CH2COO— where z′ is an integer between 2 and 24, inclusive; each Y represents a member independently selected from —COCH2O— (glycolic ester moiety), —COCH(CH3)O— (lactic ester moiety), —COCH2OCH2CH2O— (dioxanone ester), —COCH2CH2CH2CH2CH2O— (caprolactone ester), —CO(CH2)mO— where m is an integer between 2, 3, 4 or 6-24 inclusive, —COCH2O(CH2CH2O)n— where n is an integer between 2 and 24, inclusive; R′ is hydrogen, benzyl or an alkyl group, the alkyl group being either straight-chained or branched; p is an integer between 1 and 4, inclusive; and Rn represents one or more members selected from H, alkoxy, benzyloxy, aldehyde, halogen, carboxylic acid and —NO2, which is attached directly to an aromatic ring or attached through an aliphatic chain. Absorbable polymers prepared from these compounds are useful for drug delivery, tissue engineering, tissue adhesives, adhesion prevention and other implantable medical devices.

    摘要翻译: 由选自以下的至少一种化合物或其二胺和二异氰酸酯制备的可吸收聚氨酯,聚酰胺和聚酯聚氨酯,其中每个X表示独立地选自-CH 2 COO-(乙醇酸部分),-CH(CH 3)COO-(乳酸 酸性部分),-CH 2 CH 2 OCH 2 COO-(二氧杂环己烷酮),-CH 2 CH 2 CH 2 CH 2 CH 2 COO-(己内酯部分), - (CH 2)y COO-,其中y是数字2,3,4或6-24的含义之一,和 - (CH 2 CH 2 O) CH2COO-,其中z'是2和24之间的整数,包括端值; 每个Y表示独立地选自-COCH 2 O-(乙醇酸酯部分),-COCH(CH 3)O-(乳酸酯部分),-COCH 2 OCH 2 CH 2 O - (二恶烷酮酯),-COCH 2 CH 2 CH 2 CH 2 CH 2 O-(己内酯酯),-CO )mO-,其中m是包含2,3,4或6-24的整数,-COCH 2 O(CH 2 CH 2 O)n - ,其中n是2和24之间的整数,包括端值; R'是氢,苄基或烷基,烷基是直链或支链的; p是1到4之间的整数,包括1和4; 并且R n表示选自H,烷氧基,苄氧基,醛,卤素,羧酸和-NO 2中的一种或多种,​​其直接连接到芳环上或通过脂族链连接。 由这些化合物制备的可吸收聚合物可用于药物递送,组织工程,组织粘合剂,防止粘附和其他可植入医疗器械。

    Hydrolytically Degradable Carbamate Derivatives of Poly(Ethylene Glycol)
    6.
    发明申请
    Hydrolytically Degradable Carbamate Derivatives of Poly(Ethylene Glycol) 有权
    聚(乙二醇)的水解可降解的氨基甲酸酯衍生物

    公开(公告)号:US20100105946A1

    公开(公告)日:2010-04-29

    申请号:US12559320

    申请日:2009-09-14

    IPC分类号: C07C69/63

    摘要: Poly(ethylene glycol) carbamate derivatives useful as water-soluble pro-drugs are disclosed. These degradable poly(ethylene glycol) carbamate derivatives also have potential applications in controlled hydrolytic degradation of hydrogels. In such degradable hydrogels, drugs may be either trapped in the gel and released by diffusion as the gel degrades, or they may be covalently bound through hydrolyzable carbamate linkages. Hydrolysis of these carbamate linkages releases the amine drug at a controllable rate as the gel degrades.

    摘要翻译: 公开了可用作水溶性前体药物的聚(乙二醇)氨基甲酸酯衍生物。 这些可降解的聚(乙二醇)氨基甲酸酯衍生物在水凝胶的可控水解降解中也具有潜在的应用。 在这种可降解的水凝胶中,当凝胶降解时,药物可以被捕获在凝胶中并通过扩散释放,或者它们可以通过可水解的氨基甲酸酯键共价结合。 当凝胶降解时,这些氨基甲酸酯键的水解以可控的速率释放胺药物。

    Functionalized drugs and polymers derived therefrom
    7.
    发明授权
    Functionalized drugs and polymers derived therefrom 有权
    功能化药物和衍生自其的聚合物

    公开(公告)号:US07691364B2

    公开(公告)日:2010-04-06

    申请号:US11233876

    申请日:2005-09-23

    申请人: Rao S. Bezwada

    发明人: Rao S. Bezwada

    IPC分类号: A61K31/74

    摘要: Compounds selected from: where DRUG-OH, DRUG-COOH and DRUG-NH2 are biologically active compounds; each X is independently selected from —CH2COO-(glycolic acid moiety), —CH(CH3)COO-(lactic acid moiety), —CH2CH2OCH2COO-(dioxanone moiety), —CH2CH2CH2CH2CH2COO-(caprolactone moiety), —(CH2)yCOO—, where y is 2-4 or 6-24 and —(CH2CH2O)zCH2COO—, where z is 2-24; each Y is independently selected from —COCH2O-(glycolic ester moiety), —COCH(CH3)O-(lactic ester moiety), —COCH2OCH2CH2O-(dioxanone ester moiety), —COCH2CH2CH2CH2CH2O-(caprolactone ester moiety), —CO(CH2)mO—, where m is 2-4 or 6-24 and —COCH2O(CH2CH2O)n-where n is between 2-24; R′ is hydrogen, benzyl or an alkyl group, the alkyl group being either straight-chained or branched; and p is 1-6. Multi-functional compounds and drug dimers, oligomers and polymers are also disclosed.

    摘要翻译: 选自:其中DRUG-OH,DRUG-COOH和DRUG-NH 2是生物活性化合物的化合物; 每个X独立地选自-CH 2 COO-(乙醇酸部分),-CH(CH 3)COO-(乳酸部分),-CH 2 CH 2 OCH 2 COO-(二恶烷酮部分),-CH 2 CH 2 CH 2 CH 2 CH 2 COO-(己内酯部分), - (CH 2)y COO- 其中y为2-4或6-24和 - (CH2CH2O)zCH2COO-,其中z为2-24; 每个Y独立地选自-COCH2O-(乙醇酸酯部分),-COCH(CH3)O-(乳酸酯部分),-COCH2OCH2CH2O-(二恶烷酮酯部分),-COCH2CH2CH2CH2CH2O-(己内酯酯部分),-CO )mO-,其中m为2-4或6-24,-COCH 2 O(CH 2 CH 2 O)n - ,其中n为2-24; R'是氢,苄基或烷基,烷基是直链或支链的; p为1-6。 还公开了多功能化合物和药物二聚体,低聚物和聚合物。