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External charger for an implantable medical device for determining position and optimizing power transmission using resonant frequency as determined from at least one sense coil

An external charger, resonant frequency technology, used in transformer/inductor components, inductors, head electrodes, etc.

Active Publication Date: 2019-02-05
BOSTON SCI NEUROMODULATION CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It may be useful in this case to adjust the alignment threshold Vt used by the alignment circuit 70 (i.e., upward) so that the external charger 50 will not unreasonably indicate misalignment to the patient when the patient is unable to improve the alignment.

Method used

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  • External charger for an implantable medical device for determining position and optimizing power transmission using resonant frequency as determined from at least one sense coil
  • External charger for an implantable medical device for determining position and optimizing power transmission using resonant frequency as determined from at least one sense coil
  • External charger for an implantable medical device for determining position and optimizing power transmission using resonant frequency as determined from at least one sense coil

Examples

Experimental program
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Embodiment Construction

[0046] The improved charging system 100 for IMD 10 is Figure 5A shown in . Charging system 100 includes two main parts: electronics module 104 and charging coil assembly 102 including charging coil 126 . Electronics module 104 and charging coil assembly 102 are connected by cable 106 . Cable 106 may be detached from both electronics module 104 and charging coil assembly 102 via a port / connector arrangement, but as shown, cable 106 is permanently affixed to charging coil assembly 102 . The other end of the cable 106 includes a connector 108 that can be attached to and detached from the port 122 of the electronics module 104 .

[0047] Electronics module 104 preferably includes within its housing 105 a battery 110 and active circuitry 112 required for operation of the charging system, some of which are described subsequently. The electronics module 104 may also include a port 114 (e.g., a USB port) to allow its battery 110 to be recharged in a conventional manner, and / or to ...

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Abstract

A charging system for an Implantable Medical Device (IMD) is disclosed having a charging coil and one or more sense coils. The charging coil and one or more sense coils are preferably housed in a charging coil assembly coupled to an electronics module by a cable. The charging coil is preferably a wire winding, while the one or more sense coils are concentric with the charging coil and preferably formed in one or more traces of a circuit board. One or more voltages induced on the one or more sense coils can be used to determine the resonant frequency of the charging coil / IMD coupled system. Thedetermined resonant frequency can then be used to determine the position of the charging coil relative to the IMD. The magnetic field produced from the charging coil may also be driven at the resonant frequency to optimize power transfer to the IMD.

Description

technical field [0001] The present invention relates to wireless external chargers for implantable medical device systems. Background technique [0002] Implantable stimulation devices are devices that generate and deliver electrical stimulation to the nerves and tissues of the body for the treatment of various biological disorders, such as pacemakers for the treatment of cardiac arrhythmias; defibrillators for the treatment of cardiac fibrillation; Tremors; cochlear stimulators for deafness; retinal stimulators for blindness; muscle stimulators for producing coordinated limb movements; spinal cord stimulators for chronic pain; motor and psychological disorders cortical and deep brain stimulators (DBS); and other neurostimulators used to treat urinary incontinence, sleep apnea, shoulder subluxation, and more. The following description will generally focus on using the invention within a spinal cord stimulation (SCS) system such as disclosed in US Patent 6,516,227. However,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N1/372A61N1/378
CPCA61N1/37223A61N1/37229A61N1/3787H02J50/80H02J50/12A61N1/0534A61N1/0551A61N1/36125A61N1/36142H01F27/2804H01F27/2823H01F38/14
Inventor 丹尼尔·阿迦西恩托马斯·W·斯托弗莱夫·弗赖丁
Owner BOSTON SCI NEUROMODULATION CORP
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