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1. 发明授权

US5203774A Device for use with a catheter 失效
标题翻译：用导管使用的装置
公开(公告)号：US5203774A
公开(公告)日：1993-04-20
申请号：US647267
申请日：1991-01-29
申请人： James P. Gilson , Anthony F. Rickards
发明人： James P. Gilson , Anthony F. Rickards
IPC分类号： A61M25/08 , A61M39/06
CPC分类号： A61M39/0693
摘要： The device for use with a catheter includes a sleeve 21 for assembly onto the shaft of a catheter 1, between the catheter shaft and a Tuohy-Borst connector 3. The internal diameter of the sleeve 21 is complementary with the external diameter of the catheter 1 so that the catheter is movable within the sleeve. The external diameter of the sleeve is such that when the Tuohy-Borst connector is closed, a seal is formed between the sleeve and the connector. A flange 24 is provided at one end of the device for engagement with the connector, to prevent movement of the sleeve with the catheter. The internal diameter of the sleeve 21 is also complementary with the external diameter of the catheter 1 so as to provide an annular space about the catheter whereby, in use, a controlled amount of backbleed of blood is allowed.

2. 发明授权

US4644954A Rate adaptive pacemaker apparatus and method 失效
标题翻译：率自适应起搏器装置及方法
公开(公告)号：US4644954A
公开(公告)日：1987-02-24
申请号：US745836
申请日：1985-06-18
申请人： Frederik H. M. Wittkampf , Anthony F. Rickards
发明人： Frederik H. M. Wittkampf , Anthony F. Rickards
IPC分类号： A61N1/365 , A61N1/36
CPC分类号： A61N1/365
摘要： A pacemaker and method of cardiac pacing employing the Tx mode of rate control, having means for automatically terminating the refractory period after sensing of an evoked T wave following a delivered stimulus. The pacemaker also is capable of overriding a natural rate and delivering one or more stimulus pulses so as to obtain a Tx rate determination during what would otherwise be inhibited pacer operation.
摘要翻译：采用速率控制的Tx模式的心脏起搏器和心脏起搏方法，具有在感测到传递的刺激之后的诱发T波的情况下自动终止不应期的装置。起搏器还能够覆盖自然率并递送一个或多个刺激脉冲，以便在否则会阻止起搏器操作时获得Tx速率确定。

3. 发明授权

US4527568A Dual chamber pacer with alternative rate adaptive means and method 失效
标题翻译：双室起搏器具有替代速率自适应装置和方法
公开(公告)号：US4527568A
公开(公告)日：1985-07-09
申请号：US566101
申请日：1983-12-27
申请人： Anthony F. Rickards
发明人： Anthony F. Rickards
IPC分类号： A61N1/368 , A61N1/36
CPC分类号： A61N1/368
摘要： A dual chamber pacemaker system is disclosed with means for operating in one or another of alternate rate adaptive modes. The pacemaker incorporates an atrial synchronous mode, wherein, pacing rate is determined as a function of sensed atrial signals. It also incorporates a T.sub.x mode, wherein pacing rate is controlled by a sensed QT interval, and an extra sensor mode, wherein pacing rate is controlled as a function of at least one sensed body parameter. The pacemaker comprises means for automatically testing the applicability or appropriateness of the mode currently in use, and for automatically selecting the appropriate rate control mode.
摘要翻译：公开了一种双室起搏器系统，其具有用于以一种或另一种替代速率自适应模式操作的装置。起搏器包括心房同步模式，其中起搏速率被确定为感测的心房信号的函数。其还包括Tx模式，其中起搏速率由感测的QT间隔控制，并且额外的传感器模式，其中起搏速率被控制为至少一个感测到的身体参数的函数。起搏器包括用于自动测试当前使用的模式的适用性或适当性以及用于自动选择适当的速率控制模式的装置。

4. 发明授权

US4228803A Physiologically adaptive cardiac pacemaker 失效
标题翻译：生理适应性心脏起搏器
公开(公告)号：US4228803A
公开(公告)日：1980-10-21
申请号：US949044
申请日：1978-10-06
申请人： Anthony F. Rickards
发明人： Anthony F. Rickards
IPC分类号： A61N1/365 , A61N1/372 , A61N1/30
CPC分类号： A61N1/365
摘要： A cardiac pacemaker is disclosed having means for automatically adjusting the rate of operation to correspond to physiological changes. Circuitry is provided for detecting the presence or absence of an evoked T wave following a delivered stimulus pulse, and for measuring the time interval between the stimulus pulse and the following T wave. The escape interval of the pacemaker pulse generator is varied in accordance with the detected stimulus-T interval and in the same direction, so as to vary the pacing rate in accordance with variations in such interval. Since this interval in turn corresponds to physiological changes, the pacemaker is adapted to automatically follow the patient's physiological changes.
摘要翻译：公开了一种心脏起搏器，其具有用于自动调节运动速率以对应于生理变化的装置。提供电路用于检测在传递的刺激脉冲之后是否存在诱发T波，并且用于测量刺激脉冲和随后的T波之间的时间间隔。起搏器脉冲发生器的逃逸间隔根据检测到的刺激T间隔和相同的方向而变化，以便根据这种间隔的变化来改变起搏速率。由于该间隔又对应于生理变化，所以起搏器适于自动跟随患者的生理变化。

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