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    • 2. 发明授权
    • Collapsible slide carousel
    • 可折叠幻灯片转盘
    • US5229799A
    • 1993-07-20
    • US857083
    • 1992-03-19
    • Fred E. SilversteinAndrew H. Proctor
    • Fred E. SilversteinAndrew H. Proctor
    • G03B23/04G03B23/06
    • G03B23/06G03B23/04
    • A collapsible slide carousel which allows for more efficient storage and transport thereof. The collapsible slide carousel includes an upper portion, a lower portion and a plurality of slide dividers pivotally secured to the upper and lower portions such that the slides can be positioned in an erect position or a collapsed position. In the erect position the slides are disposed substantially vertically as in a conventional carousel such that the slides can be viewed utilizing a conventional carousel projector. Alternatively, in the collapsed position the slides are disposed in an angular position overlapping one another in a domino-like manner allowing for more efficient storage and transportation of the carousel. The upper portion of the carousel is rotatably disposed with respect to the lower portion such that the carousel can be adjusted from the erect position to the collapsed position, and vice versa, by rotating the upper portion with respect to the lower portion. In the erect position the upper portion is displaced from the lower portion and in the collapsed position the upper portion is disposed adjacent the lower portion. The carousel further include a spring for urging the upper portion away from the lower portion such that the slides are urged toward the erect position.
    • 可折叠的滑动转盘允许更有效的储存和运输。 可折叠的滑动转盘包括上部,下部和可枢转地固定到上部和下部的多个滑动分隔部,使得滑块可以定位在直立位置或收缩位置。 在直立位置,滑块基本垂直地布置成如传统的圆盘传送带,使得可以使用传统的圆盘传送带投影仪观看幻灯片。 或者,在折叠位置,滑块以相对于彼此重叠的角度位置布置,使得圆盘传送带更有效地存储和运输。 转盘的上部相对于下部可旋转地设置,使得圆盘传送带可以通过相对于下部旋转上部,从直立位置到折叠位置,反之亦然。 在直立位置,上部从下部移位,并且在折叠位置,上部邻近下部设置。 转盘还包括用于将上部部分推离远离下部的弹簧,使得滑块朝着直立位置被推动。
    • 3. 发明授权
    • Miniature ultrasound imaging probe
    • 微型超声成像探头
    • US5178150A
    • 1993-01-12
    • US660525
    • 1991-02-25
    • Fred E. SilversteinAndrew H. Proctor
    • Fred E. SilversteinAndrew H. Proctor
    • A61B1/018A61B8/12
    • A61B1/018A61B8/12A61B8/4281A61B8/445
    • A miniature ultrasound imaging probe that may be delivered through the biopsy channel of an endoscope. The probe includes a probe tip mounted at the distal end of a flexible catheter. The probe tip includes a transducer body mounted on the distal end of a distal actuating rod with the transducer body carrying an ultrasound transducer. The distal actuating rod is mounted on the distal end of a plurality of concentric, springs wound in opposite directions extending concentrically through the catheter and terminating in a proximal actuating rod. A flexible bag filled with an acoustic coupling fluid is mounted at the distal end of the catheter. The bag surrounds the transducer body to isolate it from the external environment and retain the acoustic coupling fluid. When the probe is to be inserted through a narrow passage, the proximal actuating rod is advanced into the catheter to extend the transducer body against the flexible bag. As a result, the bag elongates and its width is reduced. When the probe is to be used for imaging, the proximal actuating rod is retracted to withdraw the transducer body away from the bag and allow the bag to expand radially so that it can conform to a surface through which an image is to be obtained.
    • 可以通过内窥镜的活检通道递送的微型超声成像探针。 探头包括安装在柔性导管的远端处的探针尖端。 探针尖端包括安装在远端致动杆的远端上的传感器体,换能器主体承载超声换能器。 远端致动杆安装在多个同心的弹簧的远端上,该弹簧以相反方向缠绕,同心地延伸穿过导管并且终止于近侧致动杆。 装有声耦合流体的柔性袋安装在导管的远端。 该袋围绕换能器主体以将其与外部环境隔离并保持声耦合流体。 当探针插入通过狭窄的通道时,近端致动杆前进到导管中以将换能器本体抵靠柔性袋延伸。 结果,袋延长并且其宽度减小。 当探针用于成像时,近端致动杆缩回以使换能器体离开袋子,并允许袋径向膨胀,使得其能够符合要获得图像的表面。
    • 7. 发明授权
    • Method for endoscopic blood flow detection by the use of ultrasonic
energy
    • 通过使用超声能量进行内窥镜血流检测的方法
    • US4582067A
    • 1986-04-15
    • US466123
    • 1983-02-14
    • Fred E. SilversteinRoy W. MartinDavid A. Gilbert
    • Fred E. SilversteinRoy W. MartinDavid A. Gilbert
    • A61B1/015A61B1/018A61B1/273A61B8/06A61B8/12A61B17/22A61B17/32A61B17/34A61B18/14A61B10/00
    • A61B8/06A61B1/015A61B1/018A61B1/2736A61B17/22A61B8/12A61B8/445A61B17/3478A61B2017/320084A61B2018/1407A61B5/489
    • Various forms of a catheter that is sized to pass through the biopsy channel of an endoscope include an elongated catheter tube of flexible material and an ultrasonic probe carried by the catheter tube adjacent its tip. The forms include: a papillotome catheter (FIGS. 1 and 3); catheters for general endoscopic and nonendoscopic applications (FIGS. 4, 7A through 7C, 8A through 8B, 10A through 10B, and 11); and, a sclerosing catheter (FIGS. 13 through 15). These catheters may be used to determine the location of the retroduodenal artery in endoscopic papillotomy (FIGS. 2, 5, and 6), to evaluate and treat esophageal varices (FIGS. 9 and 12), or generally to detect blood flow in a biological structure within the body. Depending on the application, the ultrasonic field provided by the ultrasonic probe may be either transverse or parallel to the longitudinal axis of the catheter tube and may be either highly directional, omnidirectional, or sectorial. The ultrasonic probe is coupled to a pulsed Doppler circuit (FIG. 16) by an isolation circuit (FIGS. 17 through 20) that provides electrical isolation and RFI suppression. The Doppler circuit is designed to enhance close proximity detection of blood flow, to limit the range of the probe's ultrasonic field, and to distinguish between arterial blood flow, venous blood flow, and vessel wall motion.
    • 尺寸适于穿过内窥镜的活检通道的导管的各种形式包括:柔性材料的细长导管和由导管邻近其末端承载的超声波探头。 形式包括:乳头切开导管(图1和3); 用于一般内窥镜和非内窥镜应用的导管(图4,7A至7C,8A至8B,10A至10B和11); 和硬化导管(图13至15)。 这些导管可用于确定内视乳头切开术中再二十二指肠动脉的位置(图2,图5和图6),以评估和治疗食管静脉曲张(图9和12),或通常用于检测生物中的血液流动 体内结构。 根据应用,由超声波探头提供的超声波场可以是横向的或平行于导管的纵向轴线,并且可以是高度定向的,全向的或扇形的。 超声波探头通过提供电隔离和RFI抑制的隔离电路(图17至20)耦合到脉冲多普勒电路(图16)。 多普勒电路设计用于增强血流的近距离检测,限制探头的超声波场的范围,并区分动脉血流,静脉血流和血管壁运动。