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    • 1. 发明授权
    • Coating medical devices using air suspension
    • 使用空气悬浮的涂层医疗设备
    • US06368658B1
    • 2002-04-09
    • US09551614
    • 2000-04-17
    • Marlene SchwarzKathleen MillerKalpana Kamath
    • Marlene SchwarzKathleen MillerKalpana Kamath
    • B01J1300
    • A61L27/28A61L27/54A61L29/08A61L29/16A61L31/08A61L31/10A61L31/14A61L31/16A61L2300/252A61L2300/258A61L2300/606A61L2300/608A61L2420/02B05B13/02B05B13/0221B05B13/025B05B13/0257B05C13/00B05D1/22C23C14/50C23C16/458
    • Methods and apparatuses for coating medical devices and the devices thereby produced are disclosed. In one embodiment, the invention includes a method comprising the steps of suspending the medical device in an air stream and introducing a coating material into the air stream such that the coating material is dispersed therein and coats at least a portion of the medical device. In another embodiment, the medical devices are suspended in an air stream and a coating apparatus coats at least a portion of the medical device with a coating material. The coating apparatus may include a device that utilizes any number of alternative coating techniques for coating the medical devices. This process is used to apply one or more coating materials, simultaneously or in sequence. In certain embodiments of the invention, the coating materials include therapeutic agents, polymers, sugars, waxes, or fats. By using air suspensions to coat medical devices, the methods of the present invention result in coatings having minimal defects and uniform thicknesses and mechanical properties. Further, the methods of the present invention are time efficient and cost effective because they facilitate the coating of numerous medical devices in a single batch, resulting in numerous medical device units containing substantially the same coating.
    • 公开了用于涂覆医疗装置的方法和装置以及由此制造的装置。 在一个实施方案中,本发明包括一种方法,其包括以下步骤:将医疗装置悬浮在空气流中并将涂料引入空气流中,使得涂层材料分散在其中并涂覆医疗装置的至少一部分。 在另一个实施方案中,医疗装置悬浮在空气流中,并且涂覆装置用涂料涂覆医疗装置的至少一部分。 涂覆设备可以包括利用任何数量的替代涂覆技术来涂覆医疗装置的装置。 该方法用于同时或按顺序施用一种或多种涂料。 在本发明的某些实施方案中,涂层材料包括治疗剂,聚合物,糖,蜡或脂肪。 通过使用空气悬浮液来涂覆医疗装置,本发明的方法产生具有最小缺陷和均匀厚度和机械性能的涂层。 此外,本发明的方法是时间有效和成本有效的,因为它们有助于单批次涂覆许多医疗装置,导致许多医疗装置单元含有基本上相同的涂层。
    • 3. 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
    • US06855770B2
    • 2005-02-15
    • US10319802
    • 2002-12-13
    • Leonard PinchukSepideh NottMarlene SchwarzKalpana Kamath
    • Leonard PinchukSepideh NottMarlene SchwarzKalpana Kamath
    • A61K47/32A61K9/22A61K31/337A61K35/12A61K45/00A61K47/34A61K47/36A61K47/38A61K47/42A61K48/00A61L27/16A61L27/54A61L31/04A61L31/10A61L31/16A61M37/00C08F2/00C08F293/00C08F297/00C08F297/04C08L53/00C08L53/02C09D153/00C09D153/02C08L23/00C08L23/04
    • 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)在血管内或血管内医疗装置的至少一部分上的涂层,其中所述涂层包括 上述生物相容性嵌段共聚物。