Title:
IN-VIVO IMPLANTABLE MEDICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/189492
Kind Code:
A1
Abstract:
A housing (90) of an in-vivo implantable medical device (10) comprises a window of a nonmetallic biocompatible material which enables formation of an electromagnetic resonance field and wireless communication. The external shape of the window is larger than the external shape of a power-reception coil (21) in a plan view of the housing (90). The external shape of a magnetic sheet (29) is made larger than the external shape of the power-reception coil (21) to form an electromagnetic resonance field and to thereby make a magnetic path serving as a main magnetic flux through which electric power applied to the power-reception coil (21) is obtained. A wireless communication antenna (30) is disposed at a position that does not intersect with the main magnetic flux. The external shape of the wireless communication antenna (30) has an area equal to or less than 1/100 of the external shape of the power-reception coil (21). The wavelength of an electromagnetic wave in a living body for use in wireless communication is equal to or less than 1/100 as compared to the wavelength of an electromagnetic field for use in a wireless power reception.
Inventors:
SAKAMOTO NORIKAZU (JP)
HOSOTANI TATSUYA (JP)
HOSOTANI TATSUYA (JP)
Application Number:
PCT/JP2023/009650
Publication Date:
October 05, 2023
Filing Date:
March 13, 2023
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H02J50/12; A61N1/378
Domestic Patent References:
| WO2020066095A1 | 2020-04-02 | |||
| WO2021245981A1 | 2021-12-09 | |||
| WO2021245980A1 | 2021-12-09 |
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (JP)
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