发明名称 |
Implantable cardiac stimulation device and method that stabilizes ventricular rate during episodes of atrial fibrillation |
摘要 |
An implantable cardiac stimulation device and method provide electrical stimulation therapy to stabilize the ventricular rate of a heart during episodes of atrial fibrillation. The stimulation therapy may be a plurality of stimulation pulses delivered to the AV node during the AV node refractory period following the sensing of an atrial event. Alternatively, the stimulation therapy may be a plurality of sub-threshold stimulation pulses delivered to capture AV node vagal innervations following the detection of atrial fibrillation. |
申请公布号 |
US8934971(B1) |
申请公布日期 |
2015.01.13 |
申请号 |
US200711940174 |
申请日期 |
2007.11.14 |
申请人 |
Pacesetter, Inc. |
发明人 |
Park Euljoon;Kim You-Ho;Farazi Taraneh Ghaffari |
分类号 |
A61N1/00 |
主分类号 |
A61N1/00 |
代理机构 |
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代理人 |
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主权项 |
1. An implantable cardiac stimulation device comprising:
a first sensing circuit that senses atrial activity of a heart; and a pulse generator that, responsive to the first sensing circuit sensing an AF episode, initiates delivery of a first plurality of stimulation pulses to the AV node of the heart during an AV nodal refractory period following the sensed AF episode; wherein the pulse generator is arranged to provide the stimulation pulses with an energy above the atrial capture threshold of the heart to extend the AV nodal refractory period; and wherein after the plurality of first stimulation pulses are delivered, a first atrial event of a next cardiac cycle is sensed and a time period T2 is selected so that only a single atrial event occurs during that time period T2, and wherein if it is determined that the AF episode is not terminated, the pulse generator delivers a second plurality of stimulation pulses to the AV node of the heart at the completion of the time period T2. |
地址 |
Sylmar CA US |