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External charger for implantable medical device having alignment and centering capabilities

A technology for external chargers and medical equipment, applied in other medical equipment, different battery charging, inductors, 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 implantable medical device having alignment and centering capabilities
  • External charger for implantable medical device having alignment and centering capabilities
  • External charger for implantable medical device having alignment and centering capabilities

Examples

Experimental program
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Effect test

Embodiment Construction

[0046] The improved charging system 100 for the 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 . Electronic module 104 and charging coil assembly 102 are connected by cable 106 . The cable 106 may be separated from both the electronics module 104 and the charging coil assembly 102 via a port / connector arrangement, but as shown, the cable 106 is permanently attached to the 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 electronic module 104 .

[0047] The electronic module 104 preferably includes within its housing 105 a battery 110 and active circuitry 112 necessary for the operation of the charging system, some of which are described later. The electronic module 104 may also include a port 114 (eg, a USB port) to allow its battery 110 to be recharged in a convention...

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PUM

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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 whether the charging coil is (i) centered, (ii) not centered but not misaligned, or (iii) misaligned, with respect to the IMD being charged, which three conditions sequentially comprise lower coupling between the charging coil and the IMD. A charging algorithm is also disclosed that control charging dependent on these conditions.

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 Fibrillators; Cochlear Stimulators for the Treatment of Deafness; Retinal Stimulators for the Treatment of Blindness; Muscle Stimulators for the Production of Coordinated Limb Movements; Spinal Cord Stimulators for the Treatment of Chronic Pain; Motor and Psychological Disorders Cortical and Deep Brain Stimulator (DBS); and other neurostimulators used to treat urinary incontinence, sleep apnea, shoulder subluxation, and more. The following description will generally focus on the use of the present invention within a spinal cord s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N1/378A61N1/372A61N1/36H01F27/28H01F38/14H02J7/02H02J50/12H02J50/90H04B5/00
CPCA61B2560/0219A61M2205/8243H02J50/90H02J50/12A61N1/3787H02J7/02H02J7/0047H02J7/0029H02J2310/23H04B5/26H04B5/79A61N1/0534A61N1/0551A61N1/36125A61N1/36142A61N1/37229H01F27/2804H01F27/2823H01F38/14
Inventor 丹尼尔·阿迦西恩托马斯·W·斯托弗
Owner BOSTON SCI NEUROMODULATION CORP