Implantable cardiac device having an impedance monitoring circuit and method
    1.
    发明授权
    Implantable cardiac device having an impedance monitoring circuit and method 失效
    具有阻抗监测电路和方法的可植入心脏装置

    公开(公告)号:US06658294B1

    公开(公告)日:2003-12-02

    申请号:US09943145

    申请日:2001-08-29

    IPC分类号: A61N118

    摘要: A circuit within an implantable cardiac stimulation device monitors impedance of an electrode configuration including first and second electrodes in electrical contact with a heart. The circuit is within the implantable cardiac stimulation device which applies stimulation pulses having a current and a voltage magnitude across the electrode configuration. The circuit that monitors impedance of an electrode configuration provides an impedance digital output proportional to the ratio of a stimulation pulse voltage and current.

    摘要翻译: 可植入心脏刺激装置内的电路监测包括与心脏电接触的第一和第二电极的电极配置的阻抗。 该电路在可植入的心脏刺激装置内,其施加在电极构型上具有电流和电压幅度的刺激脉冲。 监测电极配置阻抗的电路提供与刺激脉冲电压和电流的比例成比例的阻抗数字输出。

    Implantable medical stimulation device having reconfigurable memory
    2.
    发明授权
    Implantable medical stimulation device having reconfigurable memory 有权
    具有可重构存储器的植入式医疗刺激装置

    公开(公告)号:US06535765B1

    公开(公告)日:2003-03-18

    申请号:US09877623

    申请日:2001-06-08

    IPC分类号: A61N102

    摘要: The implantable medical device is provided with typically equal portions of both random access memory (RAM) and read only memory (ROM) and a virtual memory space is defined equal to the amount of memory in one of the memory devices. In a specific example, the RAM and ROM provide 256K of memory each, with the virtual memory space also set to 256K. A zone control register is provided which specifies, for each of a set of predetermined zones within the virtual memory space, whether memory access commands are to be routed to RAM or ROM. Control bits within the zone control register may be reset to permit portions of memory to be remapped from one memory device to the other. By providing RAM and ROM each typically equal in size to the virtual memory space, software for use in the device may be tested and debugged using RAM then transferred to ROM for use in production devices. By providing dual RAM and ROM, software upgrades or software bug fixes are easily performed merely by downloading new software into RAM, then resetting the zone control register to point to RAM, rather than ROM. Additionally, when necessary, the overall virtual memory space may be expanded to encompass both the RAM and ROM thereby permitting access to greater quantities of memory.

    摘要翻译: 可植入医疗装置设置有随机存取存储器(RAM)和只读存储器(ROM)的通常相等的部分,并且将虚拟存储器空间定义为等于存储器件之一中的存储器量。 在一个具体的例子中,RAM和ROM提供256K的内存,虚拟内存空间也设置为256K。 提供一个区域控制寄存器,为虚拟存储器空间内的一组预定区域中的每一个指定存储器访问命令是否被路由到RAM或ROM。 区域控制寄存器内的控制位可能被复位,以允许存储器的一部分从一个存储器件重映射到另一个。 通过提供大体上与虚拟存储器空间相等的RAM和ROM,可以使用RAM测试和调试用于设备的软件,然后将其转移到ROM以用于生产设备。 通过提供双RAM和ROM,只需通过将新软件下载到RAM中即可轻松执行软件升级或软件错误修复,然后将区域控制寄存器重置为指向RAM而不是ROM。 另外,当需要时,整个虚拟存储器空间可以被扩展以包含RAM和ROM两者,从而允许访问更大量的存储器。

    PRECISION RIBBON RESISTANCE WELDING SYSTEM
    3.
    发明申请
    PRECISION RIBBON RESISTANCE WELDING SYSTEM 审中-公开
    精密耐磨焊接系统

    公开(公告)号:US20130248496A1

    公开(公告)日:2013-09-26

    申请号:US13429033

    申请日:2012-03-23

    IPC分类号: B23K11/00

    摘要: Disclosed herein is a resistance welding system for welding a ribbon to a bond site of a bond surface. The system includes a welding header, a bond header, a ribbon dispenser, a cutter, and a support surface. The welding header includes a resistance welding tip. The bond header includes a bond foot displaceable relative to the bond surface. The bond foot includes a welding aperture. The ribbon dispenser feeds the ribbon to the bond foot. The support surface is configured to support the bond surface. The bond foot is configured to press the ribbon against the bond site of the bond surface, which is thereby forced against the support surface. With the ribbon so pressed against the bond site, the system is configured to cause the welding tip to enter the welding aperture to resistance weld the ribbon to the bond site of the bond surface.

    摘要翻译: 本文公开了一种用于将带焊接到接合表面的接合位置的电阻焊接系统。 该系统包括焊接头,接合头,色带分配器,切割器和支撑表面。 焊头包括电阻焊头。 结合头包括相对于粘合表面可移位的粘结脚。 焊脚包括焊接孔。 色带分配器将色带馈送到接合脚。 支撑表面被配置为支撑粘结表面。 接合脚构造成将带压靠在接合表面的结合位置,由此被迫抵靠支撑表面。 将带子按压在粘结部位上时,系统被配置成使焊接尖端进入焊接孔,以将焊带焊接到粘合表面的粘结部位。

    Implantable medical stimulation device having reconfigurable memory
    4.
    发明授权
    Implantable medical stimulation device having reconfigurable memory 有权
    具有可重构存储器的植入式医疗刺激装置

    公开(公告)号:US06704601B1

    公开(公告)日:2004-03-09

    申请号:US09927758

    申请日:2001-08-09

    IPC分类号: A61N108

    摘要: The implantable medical device is provided with typically equal portions of both random access memory (RAM) and read only memory (ROM) and a virtual memory space is defined equal to the amount of memory in one of the memory devices. In a specific example, the RAM and ROM provide 256 K of memory each, with the virtual memory space also set to 256 K. A zone control register is provided which specifies, for each of a set of predetermined zones within the virtual memory space, whether memory access commands are to be routed to RAM or ROM. Control bits within the zone control register may be reset to permit portions of memory to be remapped from one memory device to the other. By providing RAM and ROM each typically equal in size to the virtual memory space, software for use in the device may be tested and debugged using RAM then transferred to ROM for use in production devices. By providing dual RAM and ROM, software upgrades or software bug fixes are easily performed merely by downloading new software into RAM, then resetting the zone control register to point to RAM, rather than ROM. Additionally, when necessary, the overall virtual memory space may be expanded to encompass both the RAM and ROM thereby permitting access to greater quantities of memory.

    摘要翻译: 可植入医疗装置设置有随机存取存储器(RAM)和只读存储器(ROM)的通常相等的部分,并且将虚拟存储器空间定义为等于存储器件之一中的存储器量。 在具体示例中,RAM和ROM提供256K的存储器,虚拟存储器空间也设置为256K。提供了一个区域控制寄存器,其为虚拟存储器空间内的一组预定区域中的每一个指定, 存储器访问命令是否被路由到RAM或ROM。 区域控制寄存器内的控制位可能被复位,以允许存储器的一部分从一个存储器件重映射到另一个。 通过提供大体上与虚拟存储器空间相等的RAM和ROM,可以使用RAM测试和调试用于设备的软件,然后将其转移到ROM以用于生产设备。 通过提供双RAM和ROM,只需通过将新软件下载到RAM中即可轻松执行软件升级或软件错误修复,然后将区域控制寄存器重置为指向RAM而不是ROM。 另外,当需要时,整个虚拟存储器空间可以被扩展以包含RAM和ROM两者,从而允许访问更大量的存储器。

    Implantable cardiac stimulation device having an improved backup mode of
operation and method thereof
    5.
    发明授权
    Implantable cardiac stimulation device having an improved backup mode of operation and method thereof 失效
    具有改进的备用操作模式的植入式心脏刺激装置及其方法

    公开(公告)号:US5653735A

    公开(公告)日:1997-08-05

    申请号:US495915

    申请日:1995-06-28

    CPC分类号: A61N1/3622 A61N1/3706

    摘要: An implantable cardiac stimulation device that has automatic functions in each of two different sets of microprocessor operating code. Following implantation, a first mode of operation executes a first set of operating code, stored primarily in RAM, and performs software error detection. Upon detection of an error, the microprocessor is caused to enter a second (backup) mode of operation, where it executes a second set of operating code, which is retained in read-only memory (ROM). Thus, in the unlikely event of error detection, the implantable device is still fully functional in its second mode to provide automaticity, e.g., to select therapies for different heart condition and provide rate-responsive pacing that tracks physiological requirements. If an error is detected in the second mode, than a third mode of operation (e.g., fixed-rate VVI pacing) is enabled.

    摘要翻译: 一种可植入式心脏刺激装置,其在两组不同的微处理器操作码中具有自动功能。 植入后,第一操作模式执行主要存储在RAM中的第一组操作代码,并执行软件错误检测。 当检测到错误时,使微处理器进入第二(备用)操作模式,其中它执行保留在只读存储器(ROM)中的第二组操作代码。 因此,在错误检测的不太可能的情况下,可植入装置在其第二模式中仍然完全起作用以提供自动性,例如为不同的心脏状况选择治疗并提供跟踪生理需求的速率响应起搏。 如果在第二模式中检测到错误,则比第三操作模式(例如,固定速率VVI起搏)被使能。