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    • 56. 发明授权
    • Microchip devices for delivery of molecules and methods of fabrication thereof
    • 用于递送分子的Microchip器件及其制造方法
    • US06808522B2
    • 2004-10-26
    • US09727858
    • 2000-12-01
    • Amy C. RichardsJohn T. Santini, Jr.Michael J. CimaRobert S. Langer
    • Amy C. RichardsJohn T. Santini, Jr.Michael J. CimaRobert S. Langer
    • A16K922
    • A61K9/0097A61K9/0009A61K9/0024Y10T436/25
    • Methods of manufacturing microchip devices are provided for controlled release of molecules, such as drugs. Methods include compression molding and casting, alone or in combination with microfabrication techniques. In preferred embodiments, devices are made by (1) filling a die with a polymer powder; (2) compressing the powder to form a polymer preform; (3) thermal compression molding the preform to form a substrate in a mold having a plurality of protrusions that form reservoirs in the substrate; and (4) filling the reservoirs with a release system comprising the molecules to be released. Alternatively, ceramic devices are formed by casting the substrate from a ceramic powder or a slurry using a mold having protrusions that form reservoirs in the substrate. Control over the release rate and time of the molecules from the reservoirs of the microchip device is provided by incorporating release systems and/or reservoir caps.
    • 提供制造微芯片器件的方法用于控制释放诸如药物之类的分子。 方法包括压塑和铸造,单独或与微细加工技术组合。 在优选实施例中,装置通过(1)用聚合物粉末填充模具制成; (2)压缩粉末以形成聚合物预成型体; (3)热压缩成型预成型件以在具有在基板中形成储存器的多个突起的模具中形成基板; 和(4)用包含要释放的分子的释放系统填充储存器。 或者,通过使用具有在基板中形成储存器的突起的模具从陶瓷粉末或浆料浇铸基材来形成陶瓷装置。 通过结合释放系统和/或储存器盖来控制来自微芯片装置的储存器的分子的释放速率和时间。
    • 58. 发明授权
    • Fabrication of microchip drug delivery devices
    • 微芯片药物输送装置的制造
    • US6123861A
    • 2000-09-26
    • US22322
    • 1998-02-11
    • John T. Santini, Jr.Michael J. CimaRobert S. Langer
    • John T. Santini, Jr.Michael J. CimaRobert S. Langer
    • A61K9/00A61K9/52A61M37/00C25F7/00
    • A61K9/0009A61K9/0097A61M2205/0244A61M37/00
    • Fabrication methods are provided for microchips that control both the rate and time of release of multiple chemical substances and allow for the release of a wide variety of molecules in either a continuous or pulsatile manner. In all of the preferred embodiments, a material that is impermeable to the drugs or other molecules to be delivered and the surrounding fluids is used as the substrate. Reservoirs are etched into the substrate using either chemical (wet) etching or plasma (dry) etching techniques well known in the field of microfabrication. Hundreds to thousands of reservoirs can be fabricated on a single microchip using these techniques. A release system, which includes the molecules to be delivered, is inserted into the reservoirs by injection, inkjet printing, or spin coating methods. Exemplary release systems include polymers and polymeric matrices, non-polymeric matrices, and other excipients or diluents. The physical properties of the release system control the rate of release of the molecules. The reservoirs can contain multiple drugs or other molecules in variable dosages. The filled reservoirs can be capped with materials that passively disintegrate, materials that allow the molecules to diffuse passively out of the reservoir over time, or materials that disintegrate upon application of an electric potential. Release from an active device can be controlled by a preprogrammed microprocessor, remote control, or by biosensors.
    • 为微芯片提供制造方法,其控制多种化学物质的释放速率和时间,并允许以连续或脉动方式释放多种分子。 在所有优选的实施方案中,将待递送的药物或其它分子和周围流体不可渗透的材料用作基底。 使用在微细加工领域中众所周知的化学(湿)蚀刻或等离子(干)蚀刻技术将储层蚀刻到基底中。 使用这些技术,可以在单个微芯片上制造数百到数千个储层。 包括待输送分子的释放系统通过注射,喷墨印刷或旋涂方法插入储存器中。 示例性的释放系统包括聚合物和聚合物基质,非聚合物基质和其它赋形剂或稀释剂。 释放系统的物理性质控制分子的释放速率。 储层可以含有多种药物或其他可变剂量的分子。 填充的储层可以用被动分解的材料封盖,允许分子随时间被动地扩散出储层的材料,或在施加电势时分解的材料。 从有源设备释放可以由预编程的微处理器,遥控器或生物传感器控制。
    • 59. 发明授权
    • Microchip drug delivery devices
    • Microchip药物输送装置
    • US5797898A
    • 1998-08-25
    • US675375
    • 1996-07-02
    • John T. Santini, Jr.Michael J. CimaRobert S. Langer
    • John T. Santini, Jr.Michael J. CimaRobert S. Langer
    • A61K9/00A61K9/52A61M37/00A61K9/22
    • A61K9/0009A61K9/0097A61M2205/0244A61M37/00
    • Microchips are provided, which control both the rate and time of release of multiple chemical substances and which allow for the release of a wide variety of molecules in either a continuous or pulsatile manner. In all of the preferred embodiments, a material that is impermeable to the drugs or other molecules to be delivered and the surrounding fluids is used as the substrate. Reservoirs are etched into the substrate using either chemical (wet) etching or ion beam (dry) etching techniques well known in the field of microfabrication. Hundreds to thousands of reservoirs can be fabricated on a single microchip using these techniques. The molecules to be delivered are inserted into the reservoirs by injection or spin coating methods in their pure form or in a release system. Exemplary release systems include polymers and polymeric matrices, non-polymeric matrices, and other excipients or diluents. The physical properties of the release system control the rate of release of the molecules. The reservoirs can contain multiple drugs or other molecules in variable dosages. The filled reservoirs can be capped with materials that either degrade or allow the molecules to diffuse passively out of the reservoir over time or materials that oxidize and dissolve upon application of an electric potential. Release from an active device can be controlled by a preprogrammed microprocessor, remote control, or by biosensors.
    • 提供微芯片,其控制多种化学物质的释放速率和时间,并且允许以连续或脉动方式释放多种分子。 在所有优选的实施方案中,将待递送的药物或其它分子和周围流体不可渗透的材料用作基底。 使用在微细加工领域熟知的化学(湿)蚀刻或离子束(干)蚀刻技术将储层蚀刻到基底中。 使用这些技术,可以在单个微芯片上制造数百到数千个储层。 通过注射或旋涂方法将要输送的分子以纯形式或释放系统插入储存器中。 示例性的释放系统包括聚合物和聚合物基质,非聚合物基质和其它赋形剂或稀释剂。 释放系统的物理性质控制分子的释放速率。 储层可以含有多种药物或其他可变剂量的分子。 填充的储存器可以被降解的材料封盖,或允许分子随时间被动地扩散到储存器中,或者在施加电势时氧化和溶解的材料。 从有源设备释放可以由预编程的微处理器,遥控器或生物传感器控制。