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Passive Charge Recovery Circuitry for an Implantable Medical Device
专利权人:
Boston Scientific Neuromodulation Corporation
发明人:
Emanuel Feldman,Goran N. Marnfeldt,Jordi Parramon
申请号:
US15695999
公开号:
US20180071527A1
申请日:
2017.09.05
申请国别(地区):
US
年份:
2018
代理人:
摘要:
Recovery circuitry for passively recovering charge from capacitances at electrodes in an Implantable Pulse Generator (IPG) is disclosed. The passive recovery circuitry includes passive recovery switches intervening between each electrode node and a common reference voltage, and each switch is in series with a variable resistance that may be selected based on differing use models of the IPG. The passive recovery switches may also be controlled in different modes. For example, in a first mode, the only recovery switches closed after a stimulation pulse are those associated with electrodes used to provide stimulation. In a second mode, all recovery switches are closed after a stimulation pulse, regardless of the electrodes used to provide stimulation. In a third mode, all recovery switches are closed continuously, which can provide protection when the IPG is in certain environments (e.g., MRI), and which can also be used during stimulation therapy itself.
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