Tissue site markers for in vivo imaging
    4.
    发明申请
    Tissue site markers for in vivo imaging 有权
    用于体内成像的组织位点标记

    公开(公告)号:US20050063908A1

    公开(公告)日:2005-03-24

    申请号:US10658911

    申请日:2003-09-10

    摘要: The invention is directed biopsy site markers and methods of marking a biopsy site, so that the location of the biopsy cavity is readily visible by conventional imaging methods, particularly by ultrasonic imaging. The biopsy site markers of the invention have high ultrasound reflectivity, presenting a substantial acoustic signature from a small marker, so as to avoid obscuring diagnostic tissue features in subsequent imaging studies, and can be readily distinguished from biological features. The several disclosed embodiments of the biopsy site marker of the invention have a high contrast of acoustic impedance as placed in a tissue site, so as to efficiently reflect and scatter ultrasonic energy, and preferably include gas-filled internal pores. The markers may have a non-uniform surface contour to enhance the acoustic signature. The markers have a characteristic form which is recognizably artificial during medical imaging. The biopsy site marker may be accurately fixed to the biopsy site so as to resist migration from the biopsy cavity when a placement instrument is withdrawn, and when the marked tissue is subsequently moved or manipulated.

    摘要翻译: 本发明涉及活检部位标记和标记活组织检查部位的方法,使得活检腔的位置通过常规成像方法,特别是通过超声成像容易看到。 本发明的活检部位标记物具有高的超声反射率,从小标记物呈现出实质的声学特征,以避免在随后的成像研究中掩盖诊断组织特征,并且可以容易地与生物特征区别开来。 本发明的活检部位标记物的几个公开的实施方案具有放置在组织部位中的声阻抗的高对比度,以便有效地反射和散射超声能量,并且优选地包括气体填充的内部孔。 标记可以具有不均匀的表面轮廓以增强声学特征。 标记具有在医学成像期间可识别人造的特征形式。 可以将活检部位标记物精确地固定到活检部位,以便当放置放置器械被取出时以及随后移动或操纵标记的组织时抵抗活组织腔的迁移。

    Breast biopsy system and methods
    10.
    发明申请
    Breast biopsy system and methods 审中-公开
    乳腺活检系统及方法

    公开(公告)号:US20050187491A1

    公开(公告)日:2005-08-25

    申请号:US11112894

    申请日:2005-04-22

    摘要: An apparatus and method are provided for precisely isolating a target lesion in a patient's body tissue, resulting in a high likelihood of “clean” margins about the lesion when it is removed for diagnosis and/or therapy. This approach advantageously will often result in the ability to both diagnose and treat a malignant lesion with only a single percutaneous procedure, with no follow-up percutaneous or surgical procedure required, while minimizing the risk of migration of possibly cancerous cells from the lesion to surrounding tissue or the bloodstream. In particular, the apparatus comprises a biopsy instrument having a distal end adapted for entry into the patient's body, a longitudinal shaft, and a cutting element disposed along the shaft. The cutting element is actuatable between a radially retracted position and a radially extended position. Advantageously, the instrument is rotatable about its axis in the radially extended position to isolate a desired tissue specimen from surrounding tissue by defining a peripheral margin about the tissue specimen. Once the tissue specimen is isolated, it may be segmented by further manipulation of the cutting element, after which the tissue segments are preferably individually removed from the patient's body through a cannula or the like. Alternatively, the specimen may be encapsulated and removed as an intact piece.

    摘要翻译: 提供了一种用于精确地分离患者体内组织中的靶病变的装置和方法,导致当其被去除用于诊断和/或治疗时,对病变的“清洁”边缘的高可能性。 这种方法有利地经常导致仅使用单一经皮手术来诊断和治疗恶性病变的能力,而不需要随访的经皮或外科手术,同时最小化可能的癌细胞从病变迁移到周围的风险 组织或血液。 特别地,该装置包括具有适于进入患者身体的远端的活检器械,纵向轴和沿轴设置的切割元件。 切割元件可在径向缩回位置和径向延伸位置之间致动。 有利地,仪器可以在其径向延伸位置中绕其轴线旋转,以通过围绕组织样本限定周边边界来将期望的组织样本与周围组织隔离。 一旦组织样本被分离,则可以通过进一步操纵切割元件来分割组织样本,之后组织片段优选通过套管等从患者身体单独地移除。 或者,样品可以作为完整的片段被包封和去除。