Instrument and method for measuring three-dimensional motion in living body

An instrument ( 10 ) for measuring three-dimensional motion in a living body comprises a plurality of magnetism generators ( 12 i) fixed to one of at least two objects ( 44, 46 ) moving relatively in the living body, a plurality of magnetic field sensors ( 14 j) fixed to the other object in order to...

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Bibliographische Detailangaben
1. Verfasser:	ARAI KENICHI,YABUKAMI SHIN,KANETAKA HIROYASU
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE DENTISTRY DIAGNOSIS HUMAN NECESSITIES HYGIENE IDENTIFICATION MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS MEDICAL OR VETERINARY SCIENCE PHYSICS SURGERY TESTING
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Beschreibung
Zusammenfassung:	An instrument ( 10 ) for measuring three-dimensional motion in a living body comprises a plurality of magnetism generators ( 12 i) fixed to one of at least two objects ( 44, 46 ) moving relatively in the living body, a plurality of magnetic field sensors ( 14 j) fixed to the other object in order to perform noncontact detection of the magnetic field of each magnetism generator ( 12 i), and a signal processing means ( 26 ) for calculating relative position and direction between each magnetism generator ( 12 i) and each magnetic field sensor ( 14 j) according to a magnetic field detected by each magnetic field sensor ( 14 j). The number of magnetism generators ( 12 i) and magnetic field sensors ( 14 j) is at least five, respectively.