The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 30, 2022
Filed:
Nov. 15, 2018
Minmaxmedical, Gieres, FR;
Loic Huguel, Saint Martin le Vinoux, FR;
Sandra Rousseau, Grenoble, FR;
Mickael Chave, Saint Egreve, FR;
MINMAXMEDICAL, Gieres, FR;
Abstract
The invention relates to a method for compensating a magnetic locator in the presence of a magnetic-field-disturbing material, comprising: an emitter () comprising at least one coil emitting an emission magnetic field; a receiver () comprising at least one receiving coil and a device providing a plurality of measurements Ipof a receiving magnetic field induced by the emission field in each receiving coil; and a processing unit () comprising a field model allowing the calculation of a position (P) and/or an orientation (Q) of the receiver by means of calculation of a prediction Hof the measurements according to a criterion (C) calculated according to an error Ewhich is itself calculated in relation to the measurements Ip. The invention is characterised in that the error Eis calculated by successive iterations from initial values prescribed by the prediction Has being the difference between the measurements Ipand a disturbed model Hp, according to the equation E=Ip−Hp, the disturbed model Hpsatisfying Hp=H+P(α=−arctan(βω), (I) the parameter β being identical for all of the measurements Ip, the calculation being carried out in such a way as to minimise the criterion C.