专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06269264B1 Method for measuring impedance in the body 有权
标题翻译：测量身体阻抗的方法
公开(公告)号：US06269264B1
公开(公告)日：2001-07-31
申请号：US09325312
申请日：1999-06-03
申请人： Robert R. Weyant , Jason A. Sholder , Euljoon Park , Gene A. Bornzin , Joseph J. Florio , Said Mortazavi
发明人： Robert R. Weyant , Jason A. Sholder , Euljoon Park , Gene A. Bornzin , Joseph J. Florio , Said Mortazavi
IPC分类号： A61B505
CPC分类号： A61N1/36521
摘要： Methods and apparatus are provided for measuring the impedance of a patient's body. Pulse generating circuitry within a rate-responsive pacemaker is used to generate an impedance measurement signal that is applied to the body of the patient with conventional pacemaker leads. The impedance measurement signal contains a series of multiphasic impedance measurement waveforms, which have no net DC value and zero value after second integration. The impedance measurement signal allows the impedance of the body to be measured without interfering with external cardiac monitoring equipment such as electrocardiogram machines.
摘要翻译：提供了用于测量患者身体阻抗的方法和装置。速率响应起搏器内的脉冲发生电路用于产生用常规起搏器引线施加到患者身体的阻抗测量信号。阻抗测量信号包含一系列多相阻抗测量波形，其在第二次积分后不具有净DC值和零值。阻抗测量信号允许测量身体的阻抗，而不会干扰外部心脏监测设备，如心电图仪。

2. 发明授权

US6044294A Methods and apparatus for measuring impedance in the body 失效
标题翻译：测量体内阻抗的方法和装置
公开(公告)号：US6044294A
公开(公告)日：2000-03-28
申请号：US766636
申请日：1996-12-13
申请人： Said Mortazavi , Euljoon Park , Gene A. Bornzin , Joseph J. Florio , Jason A. Sholder , Robert R. Weyant
发明人： Said Mortazavi , Euljoon Park , Gene A. Bornzin , Joseph J. Florio , Jason A. Sholder , Robert R. Weyant
IPC分类号： A61N1/365 , A61B5/05
CPC分类号： A61N1/36521
摘要： Methods and apparatus are provided for measuring the impedance of a patient's body. Pulse generating circuitry within a rate-responsive pacemaker is used to generate an impedance measurement signal that is applied to the body of the patient with conventional pacemaker leads. The impedance measurement signal contains a series of multiphasic impedance measurement waveforms, which have no net DC value and zero value after second integration. The impedance measurement signal allows the impedance of the body to be measured without interfering with external cardiac monitoring equipment such as electrocardiogram machines.
摘要翻译：提供了用于测量患者身体阻抗的方法和装置。速率响应起搏器内的脉冲发生电路用于产生用常规起搏器引线施加到患者身体的阻抗测量信号。阻抗测量信号包含一系列多相阻抗测量波形，其在第二次积分后不具有净DC值和零值。阻抗测量信号允许测量身体的阻抗，而不会干扰外部心脏监测设备，如心电图仪。

3. 发明授权

US06449509B1 Implantable stimulation device having synchronous sampling for a respiration sensor 有权
标题翻译：具有用于呼吸传感器的同步采样的可植入刺激装置
公开(公告)号：US06449509B1
公开(公告)日：2002-09-10
申请号：US09651623
申请日：2000-08-30
申请人： Euljoon Park , Gene A. Bornzin , Joseph J. Florio , Said Mortazavi
发明人： Euljoon Park , Gene A. Bornzin , Joseph J. Florio , Said Mortazavi
IPC分类号： A61N1365
CPC分类号： A61N1/36521
摘要： An implantable cardiac device that is adapted to periodically measure a body parameter, such as transthoracic impedance, at time periods selected so that the body parameter is primarily indicative of the respiration of the patient. In this way, a ventilation parameter, such as minute ventilation, can be reconstructed from the signals without requiring filtering of the sampled signals. In one embodiment, the implantable cardiac device measures transthoracic impedance during each quiescent period of the heart and thereby obtains a plurality of transthoracic impedance data points which are then used to reconstruct a ventilation signal. As the transthoracic impedance data points are obtained during the quiescent period, the contribution of the heart to the resulting transthoracic impedance measurement can be ignored and the resulting measurements are indicative of the action of the heart. In another embodiment, the implantable cardiac device obtains transthoracic impedance signals during the zero crossings of the measured impedance signal. As the transthoracic signal is measured during the zero crossing of the measured impedance signal, the heart component of the signal is filtered out.
摘要翻译：一种可植入心脏装置，其适于在所选择的时间周期周期性地测量身体参数，例如经胸阻抗，使得身体参数主要指示患者的呼吸。以这种方式，可以从信号重建诸如分钟通气的通气参数，而不需要对采样信号进行滤波。在一个实施例中，可植入心脏装置在心脏的每个静止期间测量经胸阻抗，从而获得多个经胸阻抗数据点，然后将其用于重建通气信号。由于在静止期间获得经胸阻抗数据点，所以可以忽略心脏对所得经胸阻抗测量的贡献，并且所得到的测量值表示心脏的作用。在另一个实施例中，可植入心脏装置在测量的阻抗信号的过零点期间获得经胸阻抗信号。由于在测量的阻抗信号的过零点期间测量经胸廓信号，所以信号的心脏分量被滤除。

4. 发明授权

US5509926A Implantable medical device having means for suppressing thermally induced signals from piezoelectric sensors and method thereof 失效
标题翻译：具有抑制来自压电传感器的热感信号的装置的植入式医疗装置及其方法
公开(公告)号：US5509926A
公开(公告)日：1996-04-23
申请号：US384167
申请日：1995-02-06
申请人： Said Mortazavi , Gene A. Bornzin
发明人： Said Mortazavi , Gene A. Bornzin
IPC分类号： A61N1/365
CPC分类号： A61N1/36542
摘要： A pyroelectric suppressor circuit for preventing undesirable thermally induced signals generated by a piezoelectric physical activity sensor from reaching processor circuitry within an implantable medical device is provided. The thermally induced signals typically have frequencies below a frequency in the range from about 0.1 mHz to about 10 mHz. The suppressor circuit provides a high-pass filter that rejects signals that have frequencies associated with thermally induced signals. Signals having frequencies greater than a frequency in the range from about 0.1 mHz to about 10 mHz, which correspond to patient activity, are passed on to processing circuitry of the implantable medical device.
摘要翻译：提供了一种用于防止由压电物理活动传感器产生的不期望的热诱导信号到达可植入医疗装置内的处理器电路的热电抑制电路。热感应信号通常具有低于约0.1mHz至约10mHz范围内的频率的频率。抑制电路提供高通滤波器，其抑制具有与热诱导信号相关联的频率的信号。频率大于约0.1mHz至约10mHz的频率的对应于患者活动的频率的信号被传递到可植入医疗装置的处理电路。

5. 发明授权

US5113862A Blood oxygen sensor having leakage compensation 失效
标题翻译：血氧传感器具有泄漏补偿功能
公开(公告)号：US5113862A
公开(公告)日：1992-05-19
申请号：US587883
申请日：1990-09-25
申请人： Said Mortazavi
发明人： Said Mortazavi
IPC分类号： A61B5/145 , A61B5/1459 , A61N1/365
CPC分类号： A61N1/36557
摘要： An improved blood oxygen sensor apparatus having a special leakage compensation circuit that allows proper initialization of the oxygen sensor regardless or the value of leakage resistance which typically might be present in parallel with the oxygen sensor. During an initialization mode, in which a capacitor arranged in parallel with oxygen sensor is charged by a small initialization current, the leakage compensation circuit monitors the capacitor voltage and controllably increases the current if it is determined that the capacitor is charging at an insufficient rate, due to unspecified leakage resistance. This enables the oxygen sensor to be properly initialized such that it can thereafter accurately measure blood oxygen levels.

6. 发明授权

US5040538A Pulsed light blood oxygen content sensor system and method of using same 失效
标题翻译：脉动轻血氧含量传感器系统及其使用方法
公开(公告)号：US5040538A
公开(公告)日：1991-08-20
申请号：US403208
申请日：1989-09-05
申请人： Said Mortazavi
发明人： Said Mortazavi
IPC分类号： A61B5/145 , A61B5/1459 , A61N1/05 , A61N1/365
CPC分类号： A61N1/36557
摘要： A sensor for use with a rate-responsive pacemaker is disclosed which is responsive to blood oxygen content, thereby allowing the cardiac rate of the pacemaker to closely mimic the natural response pattern of the heart to changing physiological need. The sensor integrates the output from a photosensor driven by blood-reflected light from an LED, and when the integrated output reached a predetermined threshold latches the circuit, enabling the use of time to indicate the level of blood oxygen content. The sensor thus advantageously requires neither a voltage doubler in the driving circuitry, or an analog-to-digital converter in the output circuitry, reducing both complexity and power consumption of the blood oxygen sensor.

7. 发明授权

US5556420A Input protection circuit for pacemaker activity sensor processing circuitry 失效
标题翻译：用于起搏器活动传感器处理电路的输入保护电路
公开(公告)号：US5556420A
公开(公告)日：1996-09-17
申请号：US365667
申请日：1994-12-29
申请人： Said Mortazavi , Alan Vogel
发明人： Said Mortazavi , Alan Vogel
IPC分类号： A61N1/365 , A61N1/37 , A61N1/36
CPC分类号： A61N1/36542 , A61N1/37 , A61N1/3718
摘要： An improved input protection circuit for use in a circuit for processing sensor signals from a piezoelectric patient activity sensor is provided. The input protection circuit includes a field-effect transistor to prevent the voltage at an input terminal of the processing circuit from rising beyond a first predetermined voltage or falling below a second predetermined voltage. The gate and drain terminals of the transistor are connected to a first of two input terminals of the processing circuit and the source and body terminals are connected to the second terminal. When the voltage at the first terminal rises or falls sufficiently, the transistor conducts current, thereby preventing the voltage from rising or falling further.
摘要翻译：提供一种用于处理来自压电患者活动传感器的传感器信号的电路中的改进的输入保护电路。输入保护电路包括一个场效应晶体管，用于防止处理电路输入端的电压升高超过第一预定电压或低于第二预定电压。晶体管的栅极和漏极端子连接到处理电路的两个输入端中的第一个，源极和主体端子连接到第二端子。当第一端子处的电压上升或下降时，晶体管导通电流，从而防止电压进一步上升或下降。

8. 发明授权

US5411532A Cardiac pacemaker having integrated pacing lead and oxygen sensor 失效
标题翻译：心脏起搏器集成起搏引线和氧气传感器
公开(公告)号：US5411532A
公开(公告)日：1995-05-02
申请号：US73225
申请日：1993-06-04
申请人： Said Mortazavi
发明人： Said Mortazavi
IPC分类号： A61N1/365 , A61B5/00
CPC分类号： A61N1/36557
摘要： An improved cardiac pacemaker system of the kind that includes an oxygen sensor implantable into a patient's blood stream along with one or two electrical conductors for use in sensing heart beat activity and in selectively applying pacing pulses to the heart muscle. In an embodiment having just one implantable conductor, the oxygen sensor is integrated into the conductor, while in an embodiment having two implantable conductors, the oxygen sensor either is integrated into one of the conductors or is connected between the two conductors, in parallel with the heart muscle. In both cases, the oxygen sensor is selectively used without adversely affecting either heart beat sensing or pacing.
摘要翻译：一种改进的心脏起搏器系统，其包括可植入患者血流中的氧传感器以及用于感测心跳活动的一个或两个电导体，以及选择性地将起搏脉冲施加到心脏肌肉。在仅具有一个可植入导体的实施例中，氧传感器集成到导体中，而在具有两个可植入导体的实施例中，氧传感器或者被集成到一个导体中或连接在两个导体之间，与心脏肌肉在这两种情况下，选择性地使用氧传感器，而不会不利地影响心跳感测或起搏。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式