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    • 28. 发明申请
    • Implantable Drug Delivery Device with Bladder Retention Feature
    • 具有膀胱保留特征的可植入药物输送装置
    • US20120089121A1
    • 2012-04-12
    • US13267469
    • 2011-10-06
    • Heejin LeeHong Linh Ho Duc
    • Heejin LeeHong Linh Ho Duc
    • A61M31/00
    • A61M31/002A61K9/0034A61K9/0065A61K9/20A61K31/167A61L31/10A61L31/16A61L2300/402A61M2210/1085
    • Implantable devices and methods for controlled drug delivery are provided. The device includes a device structure deformable between a retention shape and a low profile shape for deployment in the bladder of a patient and has a drug reservoir lumen in which a drug formulation is housed. The device also includes a buoyancy retention portion, which includes a volume of entrapped air or a gas-generating or effervescent powder Which will generate a volume of entrapped air following contact with urine in the bladder. The buoyancy retention portion may include a water permeable and/or biodegradable wall, which can release the entrapped air following drug release, to cause the device to sink into the bladder neck to facilitate device expulsion without the need for a device retrieval medical procedure.
    • 提供了用于受控药物递送的可植入装置和方法。 该装置包括可在保持形状和低轮廓形状之间变形的装置结构,用于展开在患者的膀胱中,并且具有容纳药物制剂的药物储存器腔。 该装置还包括浮力保持部分,其包括一定量的夹带空气或气体产生或泡腾粉末,其将在与膀胱中的尿液接触之后产生一定量的夹带空气。 浮力保持部分可以包括水可渗透的和/或可生物降解的壁,其可以在药物释放之后释放夹带的空气,以使得装置沉入膀胱颈部以促进装置排出而不需要装置取回医学程序。
    • 29. 发明申请
    • Minimally Invasive Systems and Methods for In Vivo Testing of Materials
    • 微创体系和材料体内检测方法
    • US20110052497A1
    • 2011-03-03
    • US12870261
    • 2010-08-27
    • Heejin Lee
    • Heejin Lee
    • A61K49/00C12Q1/02C12M1/34G01N31/00
    • A61M31/002A61M2210/1085
    • Implantable material testing devices and method of testing materials in an animals are provided. In one embodiment, a method of testing a material in an animal includes associating the material with a retention frame to form a testing device. The retention frame movable between a first shape suited for insertion through a deployment instrument and a second shape suited for retention in the animal. The testing device is inserted in the first shape into the deployment instrument and is driven through the deployment instrument into the animal. Once in the animal, the testing device is permitted to assume the second shape so that the testing device is retained in the animal for a testing period. The testing device is removed from the animal after the testing period is complete, and the material is analyzed. The material may be analyzed for biofilm formation, encrustation, or degradation. The animal also may be analyzed for infection or other reactions to the material. Tissue may be collected from the animal, and the tissue may be analyzed. The testing period may be between about 1 day and about 90 days.
    • 提供植入材料测试装置和动物材料测试方法。 在一个实施例中,测试动物中的材料的方法包括将材料与保持框架相关联以形成测试装置。 保持框架可在适于通过展开装置插入的第一形状和适于保持在动物中的第二形状之间移动。 测试装置以第一形状插入到展开仪器中,并通过展开仪器被驱动到动物体内。 一旦在动物中,允许测试装置呈现第二形状,使得测试装置保留在动物中一段测试期间。 试验期间完成后,从动物中取出试验装置,对材料进行分析。 可以分析该材料的生物膜形成,结垢或降解。 也可以分析动物感染或其他反应物质。 可以从动物收集组织,并且可以分析组织。 测试期可在约1天至约90天之间。