System for determining the position and orientation of a...

Details System for determining the position and orientation of a... System for determining the position and orientation of a...

2007-03-27

2007-03-27

Smith, Ruth S. (Department: 3737)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

C600S407000, C606S001000

Reexamination Certificate

active

10873409

ABSTRACT:
Electromagnetic field detector located within a catheter, for determining the position and orientation of the catheter according to an electromagnetic field generated in the vicinity of the catheter, the electromagnetic field detector including a ferromagnetic core having a perforation and at least one winding wound around the ferrous core, the perforation providing communication between a first side of the ferrous core and a second side of the ferrous core, the first side facing a proximal side of the catheter and the second side facing a distal side of the catheter, the winding producing a current according to the electromagnetic field, wherein the ferrous core increases the sensitivity of the electromagnetic field detector to the electromagnetic field, by increasing a proportionality factor between the current and the electromagnetic field.

REFERENCES:
patent: 5728062 (1998-03-01), Brisken
patent: 5850682 (1998-12-01), Ushiro
patent: 6353379 (2002-03-01), Busletta et al.
patent: 6711429 (2004-03-01), Gilboa et al.
patent: 2002/0009535 (2002-01-01), Michal et al.
patent: 2003/0199852 (2003-10-01), Seward et al.
patent: 2002-372520 (2002-12-01), None
International Search Report for parent PCT Application No. PCT/IL05/00586, Apr. 4, 2006 (4 pages).

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