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    • 35. 发明授权
    • Spray drying apparatus and methods of use
    • 喷雾干燥装置及使用方法
    • US06223455B1
    • 2001-05-01
    • US09304257
    • 1999-05-03
    • Donald E. Chickering, IIIHoward BernsteinMark KeeganGreg RandallJulie Straub
    • Donald E. Chickering, IIIHoward BernsteinMark KeeganGreg RandallJulie Straub
    • F26B1700
    • B01J2/04B01D1/18
    • Improved spray drying apparati, and methods of use thereof, have been developed. The spray drying equipment includes a primary drying chamber and a secondary drying apparatus which includes tubing having a length sufficient to increase the contact time between the drying gas and the droplets/particles to dry the particles to the extent desired, at a drying rate and temperature which would be too low to provide adequate drying without the secondary drying apparatus. The secondary drying apparatus increases the drying efficiency of the spray dryer system without increasing the drying rate, while minimizing loss in yield The ratio of the length of tubing to the length of the primary drying chamber is at least 2:1. The tubing diameter is substantially smaller than the diameter of the primary drying chamber, such that the particles move at higher velocity through the tubing to minimize product losses. The ratio of the cross-sectional area of the primary drying chamber to the cross-sectional area of the tubing most preferably is about 16:1. The tubing preferably is in a compact coil design, which can more easily be transported and which has minimum space requirements, and may optionally include a jacket to control the temperature of the secondary drying process. A preferred application for the spray drying process and equipment is in the production of polymeric microparticles, between about 1 and 200 &mgr;m in diameter, which can be used to deliver therapeutic and diagnostic agents.
    • 已经开发了改进的喷雾干燥装置及其使用方法。 喷雾干燥设备包括初级干燥室和次级干燥设备,其包括具有足以增加干燥气体和液滴/颗粒之间的接触时间的长度的管道,以将干燥颗粒以期望的程度以干燥速率和温度 这不足以在没有二次干燥装置的情况下提供足够的干燥。 二次干燥装置提高喷雾干燥器系统的干燥效率,而不增加干燥速率,同时最小化产率损失。管道长度与初级干燥室长度之比至少为2:1。 管道直径基本上小于初级干燥室的直径,使得颗粒以更高的速度移动通过管道以最小化产品损失。 初级干燥室的横截面积与管道的横截面面积的比率最优选为约16:1。 管道优选地处于紧凑的线圈设计中,其可以更容易地被输送并且具有最小的空间要求,并且可以可选地包括用于控制二次干燥过程的温度的护套。 用于喷雾干燥方法和设备的优选应用是生产直径约1-200μm的聚合物微粒,其可用于递送治疗剂和诊断剂。
    • 37. 发明申请
    • OXYGEN SENSOR
    • 氧传感器
    • US20100249560A1
    • 2010-09-30
    • US12716222
    • 2010-03-02
    • Douglas A. LevinsonHoward Bernstein
    • Douglas A. LevinsonHoward Bernstein
    • A61B5/145
    • G01N33/84A61B5/021A61B5/14532A61B5/14542A61B5/411A61B2560/0412A61M5/14244G01N33/54366G01N33/72
    • The present invention generally relates to systems and methods for determining oxygen in a sample, or in a subject. In one aspect, the present invention is generally directed to an article exhibiting a determinable feature responsive to oxygen, such as oxygen-sensitive particles. The particles may exhibit a determinable change with a change in oxygen concentration, and such particles can accordingly be used to determine oxygen. For example, in one set of embodiments, the particles may be at least partially coated with a protein, such as hemoglobin, that is able to interact with oxygen. In some cases, the protein may aggregate under certain conditions (e.g., under relatively low oxygen concentrations), and such protein aggregation may be used, for example, to cause the particles to become aggregated, which can be determined in some way. In some cases, such aggregation may be irreversible; i.e., the degree of aggregation corresponds to the most extreme oxygen concentrations that the proteins were exposed to. Such articles may be used, for example, to determine oxygen within a sample, or within a subject, such as a human subject. For instance, the article may be formed as a skin patch, or administered to the skin of a subject, e.g., on the surface of the skin, within the dermis or epidermis, etc., to determine oxygen within the subject.
    • 本发明一般涉及用于测定样品或受试者中的氧的系统和方法。 一方面,本发明一般涉及一种表现出对氧敏感的颗粒有氧的可确定特征的物品。 颗粒可以随着氧浓度的变化而呈现可确定的变化,因此可以使用这样的颗粒来确定氧气。 例如,在一组实施方案中,颗粒可以至少部分地涂覆有能够与氧相互作用的蛋白质,例如血红蛋白。 在一些情况下,蛋白质可以在某些条件下(例如,在相对低的氧浓度下)聚集,并且可以使用这种蛋白质聚集,例如使颗粒变得聚集,这可以以某种方式确定。 在某些情况下,这种聚合可能是不可逆的; 即聚集度对应于蛋白质暴露于最极端的氧浓度。 例如,这样的制品可用于测定样品内或受试者(例如人类受试者)内的氧。 例如,制品可以形成为皮肤贴片,或者施用于受试者的皮肤,例如皮肤表面,真皮或表皮等内,以确定受试者内的氧。
    • 38. 发明申请
    • OXYGEN SENSOR
    • 氧传感器
    • US20110288389A9
    • 2011-11-24
    • US12716222
    • 2010-03-02
    • Douglas A. LevinsonHoward Bernstein
    • Douglas A. LevinsonHoward Bernstein
    • A61B5/145
    • G01N33/84A61B5/021A61B5/14532A61B5/14542A61B5/411A61B2560/0412A61M5/14244G01N33/54366G01N33/72
    • The present invention generally relates to systems and methods for determining oxygen in a sample, or in a subject. In one aspect, the present invention is generally directed to an article exhibiting a determinable feature responsive to oxygen, such as oxygen-sensitive particles. The particles may exhibit a determinable change with a change in oxygen concentration, and such particles can accordingly be used to determine oxygen. For example, in one set of embodiments, the particles may be at least partially coated with a protein, such as hemoglobin, that is able to interact with oxygen. In some cases, the protein may aggregate under certain conditions (e.g., under relatively low oxygen concentrations), and such protein aggregation may be used, for example, to cause the particles to become aggregated, which can be determined in some way. In some cases, such aggregation may be irreversible; i.e., the degree of aggregation corresponds to the most extreme oxygen concentrations that the proteins were exposed to. Such articles may be used, for example, to determine oxygen within a sample, or within a subject, such as a human subject. For instance, the article may be formed as a skin patch, or administered to the skin of a subject, e.g., on the surface of the skin, within the dermis or epidermis, etc., to determine oxygen within the subject.
    • 本发明一般涉及用于测定样品或受试者中的氧的系统和方法。 一方面,本发明一般涉及一种表现出对氧敏感的颗粒有氧的可确定特征的物品。 颗粒可以随着氧浓度的变化而呈现可确定的变化,因此可以使用这样的颗粒来确定氧气。 例如,在一组实施方案中,颗粒可以至少部分地涂覆有能够与氧相互作用的蛋白质,例如血红蛋白。 在一些情况下,蛋白质可以在某些条件下(例如,在相对低的氧浓度下)聚集,并且可以使用这种蛋白质聚集,例如使颗粒变得聚集,这可以以某种方式确定。 在某些情况下,这种聚合可能是不可逆的; 即聚集度对应于蛋白质暴露于最极端的氧浓度。 例如,这样的制品可用于测定样品内或受试者(例如人类受试者)内的氧。 例如,制品可以形成为皮肤贴片,或者施用于受试者的皮肤,例如皮肤表面,真皮或表皮等内,以确定受试者内的氧。