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1. (WO2018220215) 3-AXIS MAGNETIC POSITIONING SYSTEM FOR MINIMALLY INVASIVE SURGICAL INSTRUMENT, SYSTEMS AND METHODS THEREOF

Pub. No.:    WO/2018/220215    International Application No.:    PCT/EP2018/064537
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Sat Jun 02 01:59:59 CEST 2018
IPC: A61B 5/06
G01R 33/02
Applicants: ANALOG DEVICES GLOBAL UNLIMITED COMPANY
Inventors: SHARMA, Yogesh Jayaraman
HYDE, Christopher W.
CRONIN, Brendan
SCHMITT, Jochen
Title: 3-AXIS MAGNETIC POSITIONING SYSTEM FOR MINIMALLY INVASIVE SURGICAL INSTRUMENT, SYSTEMS AND METHODS THEREOF
Abstract:
A minimally invasive surgical instrument using 3-axis magnetic positioning, system and methods thereof. This invention describes two key ideas that enable the development of a magnetic position system based on integrated anisotropic magnetoresistive (AMR) magnetic field sensors. This achieves the resolution, power and area targets necessary to integrate 3 axes anisotropic magnetoresistance (AMR) sensors along with the Analog Front End integrated circuit (IC) in a 4mm by 350um integrated solution for catheter applications. The stringent area and power dissipation requirements are met by development through both system level solutions for higher field strengths and a minimally necessary Analog Front End (AFE) to meet the 1mm rms resolution requirement in the power dissipation and area budget.