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    • 31. 发明申请
    • APPARATUS FOR POSITIONING AND STABILIZING A CATHETER
    • 用于定位和稳定电缆的装置
    • WO1990011722A1
    • 1990-10-18
    • PCT/US1990001851
    • 1990-04-03
    • INTRA-SONIX, INC.MARTINELLI, Michael, A.HAGEL, William, E.
    • INTRA-SONIX, INC.
    • A61B08/00
    • A61M25/01A61B1/018A61B8/12A61B18/245
    • A bearing catheter (20) for stabilizing and positioning a therapeutic/diagnostic catheter (100) at a predetermined location within a lumen (210). The bearing catheter (20) comprises a tube (22) sized to receive the therapeutic/diagnostic catheter (100) so that the latter is free to move axially and rotationally within the tube (22) while remaining substantially fixed radially with the tube (22). The bearing catheter tube (22) has a wall thickness selected so that, and is made from a material chosen so that, a laser beam of selected wavelength can be transmitted through the tube with little or no absorption of the laser energy so that the tube (22) will not be damaged and so that ultrasonic imaging signals may be transmitted and received through the tube (22).
    • 一种用于在管腔(210)内的预定位置稳定和定位治疗性/诊断性导管(100)的轴承导管(20)。 轴承导管(20)包括一个尺寸适于接纳治疗/诊断导管(100)的管(22),以便后者能够在管(22)内轴向和旋转地自由移动,同时保持与管(22)径向径向固定 )。 轴承导管(22)具有选择的壁厚,并且由选择的材料制成,使得选定波长的激光束可以很少或不吸收激光能量通过管传播,使得管 (22)不会被损坏,从而可以通过管(22)传送和接收超声波成像信号。
    • 34. 发明申请
    • PHOTOACOUSTIC BREAST SCANNER
    • 照相乳品扫描仪
    • WO1998014118A1
    • 1998-04-09
    • PCT/US1997017832
    • 1997-10-01
    • OPTOSONICS, INC.KRUGER, Robert, A.
    • OPTOSONICS, INC.
    • A61B08/00
    • A61B5/0095A61B5/0091A61B5/0507A61B5/4312A61B5/7239A61B8/4281
    • Methods and apparatus for measuring and characterizing the localized electromagnetic wave absorption properties of biologic tissues (12) in vivo, using incident electromagnetic waves to produce resultant acoustic waves (26). Multiple acoustic transducers (33) are acoustically coupled to the surface of the tissue for measuring acoustic waves produced in the tissue when the tissue is exposed to a pulse of electromagnetic radiation. The multiple transducer signals are then combined to produce an image of the absorptivity of the tissue, which image may be used for medical diagnostic purposes. In specific embodiments, the transducers are moved to collect data from multiple locations, to facilitate imaging. Specific arrangements of transducers are illustrated. Also, specific mathematical reconstruction procedures are described for producing images from transducer signals.
    • 用于测量和表征生物组织(12)在体内的局部电磁波吸收特性的方法和装置,使用入射电磁波产生合成的声波(26)。 多个声换能器(33)声耦合到组织的表面,用于当组织暴露于电磁辐射脉冲时测量在组织中产生的声波。 然后组合多个换能器信号以产生组织的吸收性的图像,该图像可以用于医学诊断目的。 在具体实施例中,换能器被移动以从多个位置收集数据,以便于成像。 示出了换能器的具体布置。 此外,描述了用于从换能器信号产生图像的具体的数学重建程序。
    • 35. 发明申请
    • MARKING TUMORS AND SOLID OBJECTS IN THE BODY WITH ULTRASOUND
    • 标记肿瘤和实体超声身体
    • WO1997046160A1
    • 1997-12-11
    • PCT/US1997009444
    • 1997-06-03
    • THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA
    • THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIASTEINBERG, Bernard, D.
    • A61B08/00
    • A61B8/08A61B8/0833A61B2090/3925
    • A technique for subspeckle visibility in ultrasound imaging by using the speckle signatures to differentiate soft tissue from dense tissue and solid or compact objects. The information provided by a disparity mapper is used to automatically mark or tag these objects based on the observation that slight natural motion in soft tissue, as caused by breathing or probe compression, changes the details of a speckle pattern. This results from differential displacements among scatterers which alter the phase relations between their scattered fields. A small, compact object is displaced and distorted less, implying that its reflectivity pattern should be relatively stable, as compared to the fluctuating background reflectivity. This difference in the way the speckle patterns respond to body motion is detected by the disparity mapper. The output of the disparity mapper serves a marker or tag of dense tissue such as tumors or compact objects such as bits of shrapnel. Such techniques may be used by trained hospital sonographers and physicians to improve the location and identification of tumors and foreign objects in the tissue of a patient.
    • 通过使用斑点特征来区分软组织与致密组织和固体或紧凑物体的超声成像中的亚视觉可见性的技术。 视差映射器提供的信息用于根据观察结果自动标记或标记这些对象,即由呼吸或探针压缩引起的软组织中的轻微自然运动会改变散斑图案的细节。 这是由于改变散射场相位关系的散射体之间的差异位移。 相对于波动的背景反射率,一个小而紧凑的物体偏移和扭曲较少,这意味着其反射率模式应该相对稳定。 斑点图案对身体运动的反应方式的差异由视差映射器检测。 视差映射器的输出服务于致密组织的标记或标签,例如肿瘤或紧凑物体,例如弹片。 训练有素的医院超声医师和医师可以使用这些技术来改善患者组织中肿瘤和异物的位置和鉴别。
    • 38. 发明申请
    • ULTRASONIC APPARATUS AND METHOD FOR MEASURING ANIMAL BACKFAT
    • 超声波装置和测量动物背鳍的方法
    • WO1997011640A1
    • 1997-04-03
    • PCT/US1996015335
    • 1996-09-25
    • SONIC INDUSTRIES, INC.SCHAFER, Mark, E.
    • SONIC INDUSTRIES, INC.
    • A61B08/00
    • A61B8/0858A61B2503/40
    • An ultrasonic measuring apparatus (Fig. 2) and method (Fig. 5) to accurately determine the depth of an overlaying backfat (14-20) on an animal (8) without incurring any damage to the animal. The apparatus employs a reverse time analysis approach in which a pulse generator (28) sends a preselected ultrasonic input signal by way of a piezoelectric transducer (16) through the outer skin (12) and successively through each one of the animal's fat layer interfaces (15, 17, 20) to a preselected distance within the loin portion (22) of the animal. This reverse time approach then analyzes the resulting echo signal produced by the input signal sequentially in a direction from this loin portion toward the outer fat layers (14, 16, 18). The first strong signal within a specified range, which depends on the species, breed, age or weight of the animal to be measured, is taken as the bottom-most fat/loin transition. A microprocessor (44) is employed to measure and analyze the amplitude and contour of this signal in a direction toward the loin until it reaches a fixed point that is a prescribed percentage of the peak value of the amplitude of this signal, the magnitude of which depends on the type of animal under measurement. The value derived in this manner is an accurate measurement of the depth of overlaying backfat and is automatically displayed in digital form on a screen (46).
    • 一种超声波测量装置(图2)和方法(图5),以精确地确定动物(8)上的覆盖背脂(14-20)的深度,而不对动物造成任何损害。 该装置采用反向时间分析方法,其中脉冲发生器(28)通过压电换能器(16)通过外皮(12)发送预选的超声波输入信号,并且依次通过动物的脂肪层界面 15,17,20)移动到动物的腰部(22)内的预选距离。 这种反向时间方法然后在从该腰部朝向外脂肪层(14,16,18)的方向上顺序地分析由输入信号产生的所得到的回波信号。 在指定范围内的第一个强信号取决于要测量的动物的种类,品种,年龄或体重,被认为是最底层的脂肪/腰部过渡。 使用微处理器(44)来测量和分析该信号在朝向腰部的方向上的幅度和轮廓,直到达到固定点,该固定点是该信号幅度的峰值的规定百分比,其大小 取决于被测动物的类型。 以这种方式导出的值是覆盖背面的深度的精确测量,并且以数字形式自动显示在屏幕上(46)。
    • 39. 发明申请
    • TISSUE-STRUCTURE ANALYZER
    • 组织结构分析仪
    • WO1997011639A1
    • 1997-04-03
    • PCT/JP1996002767
    • 1996-09-25
    • ALOKA CO., LTD.UEHA, SadayukiOHTOMO, Naoki
    • ALOKA CO., LTD.
    • A61B08/00
    • A61B8/0875
    • The microstructure of bone is analyzed with ultrasonic waves. Cancellous bone is modeled in advance into a plurality of two-dimensionally arranged circular cylinders in view of ultrasonic wave scattering and the theoretical formulae of the model are derived. Then an organism is subjected to ultrasonic waves and reflected waves from the cancellous bone are received. The frequency characteristics of received signals generated by the reception of the ultrasonic waves is calculated and the unknown values of the parameters contained in the theoretical formulae are estimated based on the frequency characteristics. The interval between trabeculae and the thickness of each trabecula are estimated as the values of the parameters.
    • 用超声波分析骨的微结构。 鉴于超声波散射,松质骨被预先建模成多个二维布置的圆柱体,并且推导出模型的理论公式。 然后,生物体经受超声波,并接收来自松质骨的反射波。 计算由接收超声波产生的接收信号的频率特性,并且基于频率特性来估计理论公式中包含的参数的未知值。 小梁与每个小梁厚度之间的间隔估计为参数值。