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公开(公告)号：US20210379383A1
公开(公告)日：2021-12-09
申请号：US17285407
申请日：2019-10-23
发明人： Peter SINGLE , Dean KARANTONIS , Robert GORMAN , Milan OBRADOVIC , Ivan GUELTON , Michael NARAYANAN
摘要： This disclosure relates to implantable neuro stimulation devices with a feedback loop to control an amount of energy delivered into a neural tissue based on a measured evoked neural response. Stimulation electrodes deliver stimulation energy to neural tissue. A microprocessor performs closed-loop control of the stimulation energy based on a feedback signal that is indicative of an evoked neural response. A supervisor is connected to the feedback signal and detects malfunction of the stimulator based on the feedback signal. The supervisor is also connected to the stimulator to provide a status signal to the stimulator and changes the status signal to indicate malfunction upon detecting malfunction based on the feedback signal. The microprocessor adjusts the control of the stimulation energy in response to the status signal from the supervisor indicating malfunction.
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公开(公告)号：US20210387004A1
公开(公告)日：2021-12-16
申请号：US17287419
申请日：2019-10-23
发明人： Peter SINGLE , Dean KARANTONIS
摘要： This disclosure relates to implantable neuro stimulation devices with a feedback loop to control an amount of energy delivered into a neural tissue based on a measured evoked neural response. Stimulation electrodes deliver stimulation energy to neural tissue and a stimulator comprises a microprocessor and program memory with program code, which causes the microprocessor to perform closed-loop control of the stimulation energy based on a feedback signal that is indicative of an evoked neural response. A charge monitor monitors the delivery of energy to the stimulation electrodes by determining an amount of charge delivered by the stimulation electrodes and connected to the stimulator to provide a status signal indicative of the charge delivered to the stimulator. The device adjusts the control of the stimulation energy in response to the status signal from the charge monitor indicating undesirable charge delivery to the stimulation electrodes.
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公开(公告)号：US20210008373A1
公开(公告)日：2021-01-14
申请号：US16969886
申请日：2019-02-15
发明人： Peter SINGLE , James LAIRD
摘要： This disclosure relates to a device for applying a neural stimulus. A battery supplies electrical energy at a battery voltage and an electrode applies the electrical energy to neural tissue. A circuit measures the nervous response of the tissue and a voltage converter receives the electrical energy from the battery and controls a voltage applied to the electrode based on the measured nervous response of the tissue. This direct voltage control is energy efficient because losses across a typical current mirror are avoided. Further, the control based on the measured nervous response leads to automatic compensation of impedance variation due to in-growth or change in posture. As a result, the stimulation results in a desired neural response.
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