Apparatus and method for closing a septal defect
    41.
    发明授权
    Apparatus and method for closing a septal defect 有权
    闭合中隔缺损的装置和方法

    公开(公告)号:US06117159A

    公开(公告)日:2000-09-12

    申请号:US218381

    申请日:1998-12-22

    IPC分类号: A61B17/00 A61B17/08

    摘要: A catheter delivered device to close a septal defect, the device comprising a cylindrical shaft of metal or polymeric material with concentric parallel cuts through the wall of the device which create flattened support struts. The center of the support struts move radially away from the axis in a hinge like fashion in response to the movement of the device's proximal and distal ends toward the center of the device. This movement is reversibly effected through mechanical means. The device can be coated with growth factors, mitogenic factors or other determinants which can improve tissue growth such that tissue ingrowth can occur over a period of time. The catheter itself may be an ultrasonic imaging catheter.

    摘要翻译: 导管输送装置以闭合隔膜缺损,该装置包括金属或聚合材料的圆柱形轴,穿过穿过该装置的壁的同心平行切口,其形成平坦的支撑支柱。 响应于装置的近端和远端朝向装置的中心的移动,支撑支柱的中心以铰链相似的方式径向地远离轴线移动。 这种运动通过机械手段可逆地实现。 该装置可以涂覆生长因子,促有丝分裂因子或其它决定因素,其可以改善组织生长,使得组织向内生长可以在一段时间内发生。 导管本身可以是超声成像导管。

    Method of reversibly closing a septal defect
    43.
    发明授权
    Method of reversibly closing a septal defect 有权
    可逆闭合中隔缺损的方法

    公开(公告)号:US6024756A

    公开(公告)日:2000-02-15

    申请号:US218380

    申请日:1998-12-22

    IPC分类号: A61B17/00 A61B17/08

    摘要: A catheter delivered device to close a septal defect, the device comprising a cylindrical shaft of metal or polymeric material with concentric parallel cuts through the wall of the device which create flattened support struts. The center of the support struts move radially away from the axis in a hinge like fashion in response to the movement of the device's proximal and distal ends toward the center of the device. This movement is reversibly effected through mechanical means. The device can be coated with growth factors, mitogenic factors or other determinants which can improve tissue growth such that tissue ingrowth can occur over a period of time. The catheter itself may be an ultrasonic imaging catheter.

    摘要翻译: 导管输送装置以闭合隔膜缺损,该装置包括金属或聚合材料的圆柱形轴,穿过穿过该装置的壁的同心平行切口,其形成平坦的支撑支柱。 响应于装置的近端和远端朝向装置的中心的移动,支撑支柱的中心以铰链相似的方式径向地远离轴线移动。 这种运动通过机械手段可逆地实现。 该装置可以涂覆生长因子,促有丝分裂因子或其它决定因素,其可以改善组织生长,使得组织向内生长可以在一段时间内发生。 导管本身可以是超声成像导管。

    Catheter with removable balloon protector and stent delivery system with
removable stent protector

    公开(公告)号:US5893868A

    公开(公告)日:1999-04-13

    申请号:US812351

    申请日:1997-03-05

    摘要: A balloon catheter is provided having an expandable distal portion and balloon protector means comprising a first removable sleeve having a variable inner diameter to ease sliding the first sleeve over the balloon, and an optional second removable (outer) sleeve positioned over the inner sleeve, the second (outer) sleeve having a constrictive relationship with the first (inner) sleeve, said first and second sleeves being removed prior to use of the catheter. A stent delivery system is provided to facilitate introduction and placement of a stent, and includes a catheter having an expandable distal portion constructed and arranged for expanding the outer diameter of the catheter from a contracted state to an expanded state, said distal portion further comprising a balloon and at least one dam over which the balloon extends, and a stent positioned around the distal portion of the catheter around the balloon or gripper linear control device, said stent having a contracted condition, being sized in the contracted condition to closely surround the balloon in the contracted state, and being expandable to an expanded condition; a first removable (inner) sleeve in the region of the distal portion of the catheter positioned around the stent (and between the dams where the device comprises two dams), said first sleeve comprising a first end, a second end and a variable inner diameter to ease sliding the sleeve over the balloon and stent; an optional second removable (outer) sleeve positioned over the stent, first sleeve and at least one dam, said second (outer) sleeve having a constrictive relationship with the first (inner) sleeve, whereby when compressed by the outer sleeve, the inner sleeve will have an inner diameter approximately equal to or less than the outer profile of the collapsed balloon over the at least one dam, said first and second sleeves being removed prior to use of the stent delivery system and release of the stent by expansion of the balloon.

    Memory controller for independently supporting Synchronous and
Asynchronous DRAM memories
    45.
    发明授权
    Memory controller for independently supporting Synchronous and Asynchronous DRAM memories 失效
    用于独立支持同步和异步DRAM存储器的存储器控​​制器

    公开(公告)号:US5893136A

    公开(公告)日:1999-04-06

    申请号:US956693

    申请日:1997-10-24

    IPC分类号: G06F12/00 G06F13/00 G06F13/16

    CPC分类号: G06F13/1694 Y02B60/1228

    摘要: The present invention provides a method and apparatus in a memory controller coupled between a system bus and memory for independently supporting one of a Synchronous DRAM (SDRAM) and an Asynchronous DRAM (ADRAM) memory type via common signal pins. According to the preferred embodiment, the memory controller comprises memory control logic for generating both SDRAM and ADRAM memory interface signals and multiplexing means for selecting as output onto common signal pins either set of interface signals depending upon a memory type setting programmed within a configuration register. The memory control logic comprises at least a request processor in addition to two memory state machines, one for SDRAM and the other for ADRAM memory operations. When a system bus request is received by the request processor, it is assigned to a request state machine which interacts with both the SDRAM state machine and the ADRAM state machine to generate two sets of memory interface signals in addition to two sets of internal control signals. The sets of signals are input to a multiplexor provided for each type of control signals (i.e., memory interface and internal control), which multiplexors are controlled by the memory type select signal output from the configuration register. Based on the memory type setting programmed into the configuration registers, the appropriate sets of memory interface and internal control signals (i.e., either SDRAM or ADRAM) are selected for output to the memory array and to other units of the memory controller, respectively.

    摘要翻译: 本发明提供一种耦合在系统总线和存储器之间的存储器控​​制器中的方法和装置,用于通过公共信号引脚独立地支持同步DRAM(SDRAM)和异步DRAM(ADRAM)存储器类型之一。 根据优选实施例,存储器控制器包括用于产生SDRAM和ADRAM存储器接口信号的存储器控​​制逻辑和用于根据在配置寄存器内编程的存储器类型设置,将共同信号引脚选择为接口信号的集合的多路复用装置。 除了两个存储器状态机之外,存储器控制逻辑至少包括一个请求处理器,一个用于SDRAM,另一个用于ADRAM存储器操作。 当请求处理器接收到系统总线请求时,它被分配给请求状态机,该请求状态机与SDRAM状态机和ADRAM状态机进行交互,以产生两组存储器接口信号,以及两组内部控制信号 。 这些信号组被输入到为每种类型的控制信号(即,存储器接口和内部控制)提供的多路复用器,该多路复用器由从配置寄存器输出的存储器类型选择信号控制。 基于编程到配置寄存器中的存储器类型设置,选择适当的存储器接口组和内部控制信号(即,SDRAM或ADRAM)以输出到存储器阵列和存储器控制器的其他单元。

    Method of molding Y-adapter with a sideport radius
    47.
    发明授权
    Method of molding Y-adapter with a sideport radius 失效
    Y侧适配器侧边半径成型方法

    公开(公告)号:US5470522A

    公开(公告)日:1995-11-28

    申请号:US273811

    申请日:1994-07-12

    IPC分类号: A61M39/10 B29C45/36 B29C45/44

    摘要: A method of molding the main body of a Y-adapter that has a straight passageway extending from one extremity to the other and an arcuate passageway that is generated along the arc of a circle. Core pins for the straight and arcuate passageways are placed in a mold such that they merges together to form a single, smooth lumen in the Y-adapter. The arcuate core pin can be withdrawn from the finished Y-adapter as a result of its circular arc.

    摘要翻译: 将具有从一个末端延伸到另一个末端的直通道的Y型适配器的主体成型的方法和沿着圆弧产生的弓形通道的方法。 直线和弓形通道的芯针放置在模具中,使得它们合并在一起以在Y适配器中形成单个光滑的内腔。 弓形芯销可以由于其圆弧而从完成的Y型适配器中取出。

    Self locking guide catheter
    48.
    发明授权
    Self locking guide catheter 失效
    自锁导向导管

    公开(公告)号:US5224939A

    公开(公告)日:1993-07-06

    申请号:US888748

    申请日:1992-05-22

    摘要: A guide catheter in which the components of the hub include a ratchet mechanism that is operative to lock the hub components together and compress an integral flange of the catheter shaft therebetween to form a seal between the hub and catheter shaft without the use of bonding agents that will not become loosened accidently or inadvertently.

    摘要翻译: 一种引导导管,其中所述轮毂的部件包括棘轮机构,所述棘轮机构可操作以将所述轮毂部件锁定在一起并将所述导管轴的整体凸缘压缩在其间,以在所述轮毂和导管轴之间形成密封,而不使用粘结剂 不会意外或不经意地松动。