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    • 4. 发明申请
    • Method, Surgical Kit and Device for Treating Glaucoma
    • 方法,手术套件和治疗青光眼的装置
    • US20130184631A1
    • 2013-07-18
    • US13348931
    • 2012-01-12
    • Leonard Pinchuk
    • Leonard Pinchuk
    • A61F9/007
    • A61F9/00781A61F9/0017A61F9/007A61F9/00736A61F2009/00891A61M27/002A61M2210/0612
    • A surgical kit includes at least one instrument and at least one implant device. The instrument has a needle body used to form a surgical passage through ocular tissue. The device includes a flexible tube that defines a duct for diverting aqueous humor with an outer surface having a maximal cross-sectional dimension that is less than the maximal cross-sectional dimension of the needle body. The device incorporates sealing means including at least one element that define a maximal cross-sectional dimension that is greater that the maximal cross-sectional dimension of the needle body and that are operably disposed within the surgical passage and form a seal between the surrounding ocular tissue and the element(s) as well as fixate the device in the surgical passage. The kit (and devices thereof) can be used as part of a surgical method to divert aqueous humor to a space formed in ocular tissue.
    • 手术套件包括至少一个仪器和至少一个植入装置。 仪器具有用于通过眼组织形成手术通道的针体。 该装置包括柔性管,其限定用于将房水转移到具有小于针体的最大横截面尺寸的最大横截面尺寸的外表面的管道。 该装置包括密封装置,其包括至少一个元件,其限定最大横截面尺寸,其大于针体的最大横截面尺寸并且可操作地设置在手术通道内并在周围的眼组织之间形成密封 和元件以及将装置固定在手术通道中。 该套件(及其装置)可用作手术方法的一部分,以将房水转移到眼组织中形成的空间。
    • 6. 发明申请
    • Pacemaker Lead and Method of Making Same
    • 起搏器牵头及其制作方法
    • US20100241208A1
    • 2010-09-23
    • US12690997
    • 2010-01-21
    • Leonard Pinchuk
    • Leonard Pinchuk
    • A61N1/05
    • A61N1/05A61B5/042A61B2562/125
    • An improved pacemaker lead including a lead body supporting at least one flexible conductor element that provides an electrical signal path between a proximal connector element and a distal electrode. The lead body includes an insulating structure that protects the flexible conductor element(s) wherein the insulating structure is realized from a polymer blend of a thermoplastic polyurethane elastomer and an isobutylene block copolymer. The mole fraction of the isobutylene block copolymer of the polymer blend is in the range of 2-15% (most preferably on the order of 10%). The polymer blend of the insulating structure has a maximum tensile strength in the range of 20-40 MPa (most preferably in a range of 25-35 MPa). In the preferred embodiment, the hardness of the polymer blend can be characterized by a Shore hardness in a range of 70-80 A. The flexible conductor element(s) preferably include a coiled wire conductor defining a central axis with an outer surface facing radially outward away from the central axis and an inner surface facing radially inward toward the central axis, and the insulating structure surrounds at least the outer surface of the coiled wire conductor (and more preferably encapsulates the coiled wire conductor). The polymer blend of the insulating structure has reduced oxygen permeability, and thus provides improved resistance to environmental stress cracking and metal ion induced oxidation while maintaining the flexibility and desired tensile strength of the lead body.
    • 一种改进的起搏器引线,包括引导体,其支撑至少一个柔性导体元件,其提供近端连接器元件和远端电极之间的电信号路径。 引线体包括保护柔性导体元件的绝缘结构,其中由热塑性聚氨酯弹性体和异丁烯嵌段共聚物的聚合物共混物实现绝缘结构。 聚合物共混物的异丁烯嵌段共聚物的摩尔分数在2-15%(最优选约10%)的范围内。 绝缘结构的聚合物共混物的最大拉伸强度在20-40MPa的范围内(最优选在25-35MPa的范围内)。 在优选实施方案中,聚合物共混物的硬度可以通过肖氏硬度在70-80A的范围内表征。柔性导体元件优选包括限定中心轴线的线圈状导体,其外表面面向径向 远离中心轴线的外表面和朝向中心轴线径向向内的内表面,并且绝缘结构至少围绕线圈导线的外表面(更优选地包围线圈导线)。 绝缘结构的聚合物共混物具有降低的透氧性,从而提供改善的耐环境应力开裂性和金属离子诱导氧化性,同时保持引线体的柔软性和所需拉伸强度。
    • 8. 发明申请
    • DRUG DELIVERY COMPOSITIONS AND MEDICAL DEVICES CONTAINING BLOCK COPOLYMER
    • 药物递送组合物和含有嵌段共聚物的医疗装置
    • US20100092540A1
    • 2010-04-15
    • US12578362
    • 2009-10-13
    • Leonard PinchukSepideh HashemiMarlene C. SchwarzKalpana KamathNi Ding
    • Leonard PinchukSepideh HashemiMarlene C. SchwarzKalpana KamathNi Ding
    • A61F2/00A61K31/337A61P35/00
    • C08L53/00A61L27/16A61L27/54A61L31/048A61L31/10A61L31/16A61L2300/416A61L2300/602A61L2300/606C08F293/005C08F297/00C08F297/04C08L53/02C09D153/00C09D153/02C08L2666/02
    • A composition for delivery of a therapeutic agent is provided. The composition comprises: (a) a biocompatible block copolymer comprising one or more elastomeric blocks and one or more thermoplastic blocks and (b) a therapeutic agent, wherein the block copolymer is loaded with the therapeutic agent. The block copolymer is preferably of the formula X-(AB)n, where A is an elastomeric block, B is a thermoplastic block, n is a positive whole number and X is a seed molecule. The elastomeric blocks are preferably polyolefin blocks, and the thermoplastic blocks are preferably selected from vinyl aromatic blocks and methacrylate blocks. According to another aspect of the invention, a medical device is provided, at least a portion of which is insertable or implantable into the body of a patient. The medical device comprises (a) the above biocompatible block copolymer and (b) a therapeutic agent, wherein the block copolymer is loaded with the therapeutic agent. According to another aspect of the present invention, a method of treatment is provided in which the above device is implanted or inserted into a patient, resulting in the release of therapeutic agent in the patient over an extended period. According to yet another aspect of the invention, a coated medical device is provided which comprises: (a) an intravascular or intervascular medical device and (b) a coating over at least a portion of the intravascular or intervascular a medical device, wherein the coating comprises the above biocompatible block copolymer.
    • 提供了用于递送治疗剂的组合物。 所述组合物包含:(a)包含一种或多种弹性体嵌段和一种或多种热塑性嵌段的生物相容性嵌段共聚物和(b)治疗剂,其中所述嵌段共聚物负载有所述治疗剂。 嵌段共聚物优选为式X-(AB)n,其中A为弹性体嵌段,B为热塑性嵌段,n为正整数,X为种子分子。 弹性体嵌段优选为聚烯烃嵌段,并且热塑性嵌段优选选自乙烯基芳族嵌段和甲基丙烯酸酯嵌段。 根据本发明的另一方面,提供一种医疗装置,其至少一部分可插入或植入患者体内。 医疗装置包括(a)上述生物相容性嵌段共聚物和(b)治疗剂,其中嵌段共聚物负载有治疗剂。 根据本发明的另一方面,提供了一种治疗方法,其中将上述装置植入或插入患者体内,导致治疗剂在患者体内长时间释放。 根据本发明的另一方面,提供了一种涂覆的医疗装置,其包括:(a)血管内或血管内医疗装置和(b)在血管内或血管内至少一部分医疗装置上的涂层,其中所述涂层 包括上述生物相容性嵌段共聚物。
    • 9. 发明授权
    • Drug delivery compositions and medical devices containing block copolymer
    • 药物输送组合物和含有嵌段共聚物的医疗器械
    • US07622530B2
    • 2009-11-24
    • US11057870
    • 2005-02-14
    • Leonard PinchukSepideh HashemiMarlene C. SchwarzKalpana KamathNi Ding
    • Leonard PinchukSepideh HashemiMarlene C. SchwarzKalpana KamathNi Ding
    • C08L33/02A61F2/00
    • C08L53/00A61L27/16A61L27/54A61L31/048A61L31/10A61L31/16A61L2300/416A61L2300/602A61L2300/606C08F293/005C08F297/00C08F297/04C08L53/02C09D153/00C09D153/02C08L2666/02
    • A composition for delivery of a therapeutic agent is provided. The composition comprises: (a) a biocompatible block copolymer comprising one or more elastomeric blocks and one or more thermoplastic blocks and (b) a therapeutic agent, wherein the block copolymer is loaded with the therapeutic agent. The block copolymer is preferably of the formula X-(AB)n, where A is an elastomeric block, B is a thermoplastic block, n is a positive whole number and X is a seed molecule. The elastomeric blocks are preferably polyolefin blocks, and the thermoplastic blocks are preferably selected from vinyl aromatic blocks and methacrylate blocks. According to another aspect of the invention, a medical device is provided, at least a portion of which is insertable or implantable into the body of a patient. The medical device comprises (a) the above biocompatible block copolymer and (b) a therapeutic agent, wherein the block copolymer is loaded with the therapeutic agent. According to another aspect of the present invention, a method of treatment is provided in which the above device is implanted or inserted into a patient, resulting in the release of therapeutic agent in the patient over an extended period. According to yet another aspect of the invention, a coated medical device is provided which comprises: (a) an intravascular or intervascular medical device and (b) a coating over at least a portion of the intravascular or intervascular a medical device, wherein the coating comprises the above biocompatible block copolymer.
    • 提供了用于递送治疗剂的组合物。 所述组合物包含:(a)包含一种或多种弹性体嵌段和一种或多种热塑性嵌段的生物相容性嵌段共聚物和(b)治疗剂,其中所述嵌段共聚物负载有所述治疗剂。 嵌段共聚物优选为式X-(AB)n,其中A为弹性体嵌段,B为热塑性嵌段,n为正整数,X为种子分子。 弹性体嵌段优选为聚烯烃嵌段,并且热塑性嵌段优选选自乙烯基芳族嵌段和甲基丙烯酸酯嵌段。 根据本发明的另一方面,提供一种医疗装置,其至少一部分可插入或植入患者体内。 医疗装置包括(a)上述生物相容性嵌段共聚物和(b)治疗剂,其中嵌段共聚物负载有治疗剂。 根据本发明的另一方面,提供了一种治疗方法,其中将上述装置植入或插入患者体内,导致治疗剂在患者体内长时间释放。 根据本发明的另一方面,提供了一种涂覆的医疗装置,其包括:(a)血管内或血管内医疗装置和(b)在血管内或血管内至少一部分医疗装置上的涂层,其中所述涂层 包括上述生物相容性嵌段共聚物。