Title:
Charger alignment in an embedded possible medical device system which uses reflective impedance abnormal conditions
Document Type and Number:
Japanese Patent JP6030738
Kind Code:
B2
Abstract:
The disclosed means of determining alignment between an external charger and an implantable medical device (IMD) involves the use of reflected impedance modulation, i.e., by measuring at the external charger reflections arising from modulating the impedance of the charging coil in the IMD. During charging, the charging coil in the IMD is pulsed to modulate its impedance. The difference in the coil voltage (ΔV) produced at the external charger as a result of these pulses is assessed and is used by the external charger to indicate coupling. If the magnitude of ΔV is above a threshold, the external charger considers the coupling to the IMD to be adequate, and an alignment indicator in the external charger is controlled accordingly. The magnitude of Vcoil can be assessed in addition to ΔV to determine alignment with the IMD with improved precision, and/or to further define a high quality alignment condition.
Inventors:
Ozawa Robert
Agassi Daniel
Agassi Daniel
Application Number:
JP2015231281A
Publication Date:
November 24, 2016
Filing Date:
November 27, 2015
Export Citation:
Assignee:
Boston Scientific Neuromodulation Corporation
International Classes:
A61N1/378; H02J7/00; H02J50/10; H02J50/80
Domestic Patent References:
| JP2003348774A |
Foreign References:
| US5702431 | ||||
| US6516227 | ||||
| US20110093048 |
Attorney, Agent or Firm:
Takaki Nishijima
Disciple Maru Ken
Shinichiro Tanaka
Ino Sato
Mitsuru Matsushita
Yasushi Yamamoto
Disciple Maru Ken
Shinichiro Tanaka
Ino Sato
Mitsuru Matsushita
Yasushi Yamamoto