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:
Mar. 07, 2006
Filed:
Jan. 06, 2003
Rogers C. Ritter, Charlottesville, VA (US);
Bevil J. Hogg, Town & Country, MO (US);
Peter R. Werp, Los Gatos, CA (US);
Francis M. Creighton, Iv, St. Louis, MO (US);
Rogers C. Ritter, Charlottesville, VA (US);
Bevil J. Hogg, Town & Country, MO (US);
Peter R. Werp, Los Gatos, CA (US);
Francis M. Creighton, IV, St. Louis, MO (US);
Stereotaxis, Inc., St. Louis, MO (US);
Abstract
An apparatus and method for locating a magnetic implant in a surgical application using the field of a source magnet for the implant guiding field. The source magnet is an electromagnet having a separate calibrated magnetic field component in addition to the guiding field, so that both the magnitude and orientation of the magnetic field as a function of position around the magnet are known. A magnetic implant is provided with a sensor, such as a three-axis Hall effect sensor, to provide an indication of the magnitude and orientation of an applied magnetic field when the implant is surgically implanted in a patient. After implantation, the source magnet is energized with a current having a modulated component. The modulated component is received and filtered from the signal received from the Hall effect sensor in the implant, and provided to a processor that computes the location of the implant.