公开(公告)号：US20180344203A1

公开(公告)日：2018-12-06

申请号：US15995130

申请日：2018-06-01

Applicant: Analog Devices Global

Inventor： Yogesh Jayaraman SHARMA ,  Christopher W. HYDE ,  Brendan CRONIN ,  Jochen SCHMITT

IPC: A61B5/06 ,  A61B5/00

CPC classification number: A61B5/062 ,  G01R33/0206

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 4 mm by 350 um 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 1 mm rms resolution requirement in the power dissipation and area budget.