Medical devices having inorganic barrier coatings
    1.
    发明授权
    Medical devices having inorganic barrier coatings 有权
    具有无机屏障涂层的医疗器械

    公开(公告)号:US09220818B2

    公开(公告)日:2015-12-29

    申请号:US12501671

    申请日:2009-07-13

    摘要: Medical devices having a barrier layer comprising an inorganic material. The medical device has a reservoir containing a therapeutic agent and the barrier layer is disposed over the reservoir. In one aspect, the barrier layer has one permeability to the therapeutic agent at one portion of the medical device and a different permeability at another portion of the medical device. In another aspect, the dosage amount of the therapeutic agent in the reservoir at one portion of the medical device is different from the dosage amount of the therapeutic agent in the reservoir at another portion of the medical device. In another aspect, a bioresorbable layer is disposed over the barrier layer at one or more portions of the medical device, wherein the bioresorbable layer comprises a bioresorbable material. Also, methods of coating a medical device are disclosed, in which a barrier layer over a medical device is formed using a lithographic etching process where a plurality of particles serve as an etch mask.

    摘要翻译: 具有包含无机材料的阻挡层的医疗装置。 医疗装置具有含有治疗剂的储液器,并且阻挡层设置在贮存器的上方。 在一个方面,阻挡层在医疗装置的一部分处具有对治疗剂的一种渗透性,并且在医疗装置的另一部分具有不同的渗透性。 另一方面,医疗器械的一部分处的储存器中的治疗剂的剂量与医疗器械的另一部分处的储存器中的治疗剂的剂量不同。 在另一方面,生物可再吸收层设置在医疗装置的一个或多个部分的阻挡层之上,其中生物可再吸收层包括生物可再吸收材料。 此外,公开了涂覆医疗装置的方法,其中使用光刻蚀刻工艺形成医疗装置上的阻挡层,其中多个颗粒用作蚀刻掩模。

    SURFACE TREATED BIOERODIBLE METAL ENDOPROSTHESES
    4.
    发明申请
    SURFACE TREATED BIOERODIBLE METAL ENDOPROSTHESES 失效
    表面处理的生物可降解金属内切酶

    公开(公告)号:US20110238151A1

    公开(公告)日:2011-09-29

    申请号:US13053791

    申请日:2011-03-22

    IPC分类号: A61F2/82

    摘要: An endoprosthesis includes an expandable tubular body defined by a plurality of struts. In some embodiments, the expandable tubular body includes a bioerodible metal that has at least a first surface region and a second surface region. The first and second surface regions can have different surface oxide compositions. In some embodiments, the first portion has a thermally altered microstructure and the second portion has a wrought microstructure. The thermally altered microstructure can be a cast microstructure comprising dendritic grains. The first portion forms at least a portion of an outer surface of the expandable tubular body. In some embodiments, the expandable tubular body includes iron or a bioerodible iron alloy and at least one surface of the expandable tubular body includes a substantially uniform coating of iron(III) oxide.

    摘要翻译: 内假体包括由多个支柱限定的可扩张管状体。 在一些实施例中,可扩张管状体包括具有至少第一表面区域和第二表面区域的生物浸渍金属。 第一和第二表面区域可以具有不同的表面氧化物组成。 在一些实施例中,第一部分具有热改变的微结构,第二部分具有锻造微结构。 热改变的微结构可以是包含树枝状晶粒的铸造微结构。 第一部分形成可扩张管状体的外表面的至少一部分。 在一些实施例中,可膨胀管状体包括铁或生物腐蚀性铁合金,并且可膨胀管体的至少一个表面包括基本均匀的氧化铁(III)涂层。

    Medical devices having inorganic particle layers
    5.
    发明授权
    Medical devices having inorganic particle layers 有权
    具有无机颗粒层的医疗装置

    公开(公告)号:US08932346B2

    公开(公告)日:2015-01-13

    申请号:US12428775

    申请日:2009-04-23

    IPC分类号: A61F2/82 A61L31/08 A61L31/16

    摘要: An expandable medical device having a particle layer disposed over a reservoir containing a therapeutic agent. The particle layer has a first porosity when the medical device is in the unexpanded configuration and a second porosity when the medical device is in the expanded configuration. The particle layer comprises a plurality of micron-sized or nano-sized particles. In certain embodiments, the particles are not connected to each other, and as such, the different porosities are provided by changes in the spacing between the particles as the medical device is expanded/unexpanded. Also disclosed are medical devices having a particle layer, wherein the particle layer comprises a plurality of encapsulated particles, and methods of coating medical devices with particles.

    摘要翻译: 一种可膨胀医疗装置,其具有设置在含有治疗剂的贮器上的颗粒层。 当医疗装置处于未膨胀构型时,颗粒层具有第一孔隙度,并且当医疗装置处于膨胀构型时具有第二孔隙率。 颗粒层包含多个微米级或纳米尺寸的颗粒。 在某些实施方案中,颗粒彼此不连接,因此,当医疗装置膨胀/未膨胀时,由颗粒之间的间隔的变化提供不同的孔隙度。 还公开了具有颗粒层的医疗装置,其中所述颗粒层包含多个包封的颗粒,以及用颗粒涂覆医疗装置的方法。