Title:
MEDICAL IMAGE GUIDANCE MARKER
Document Type and Number:
WIPO Patent Application WO/2021/005955
Kind Code:
A1
Abstract:
Provided is an indwelling type medical image guidance marker that is applicable to all of at least three types of imaging modalities of MRI, ultrasonic, and CT and for which artifacts have been kept to a minimum. This indwelling type medical image guidance marker is characterized in that: the image guidance marker has a coil shape and comprises an alloy which has a magnetic susceptibility in a range of -13 to -5 ppm; and the coil is formed of wires having a wire diameter in the range of 0.15 to 0.45 mm and has a coil diameter in the range of 0.55 to 1.20 mm and a coil pitch in the range of 0.3 to 1.5 mm and in the range of 1.8 to 4 times the wire diameter.
Inventors:
OKIHARA KOJI (JP)
UKIMURA OSAMU (JP)
UKIMURA OSAMU (JP)
Application Number:
PCT/JP2020/023063
Publication Date:
January 14, 2021
Filing Date:
June 11, 2020
Export Citation:
Assignee:
KYOTO PREFECTURAL PUBLIC UNIV CORP (JP)
International Classes:
A61B5/055; A61B6/03; A61B8/00; C22C5/02
Domestic Patent References:
| WO2010084948A1 | 2010-07-29 | |||
| WO2007070544A2 | 2007-06-21 |
Foreign References:
| JP2017158608A | 2017-09-14 | |||
| US20160058382A1 | 2016-03-03 | |||
| JP2018526160A | 2018-09-13 | |||
| JP2015120946A | 2015-07-02 | |||
| JP2013106829A | 2013-06-06 | |||
| JP2009502321A | 2009-01-29 | |||
| JP2010536491A | 2010-12-02 | |||
| JP4523179B2 | 2010-08-11 | |||
| JPS5550027B2 | 1980-12-16 | |||
| JP5582484B1 | 2014-09-03 |
Other References:
See also references of EP 3998019A4
Attorney, Agent or Firm:
SHIRAI, Hiroki et al. (JP)
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