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:
Dec. 01, 2009
Filed:
Nov. 05, 2002
Method and apparatus for magnetically controlling motion direction of a mechanically pushed catheter
Peter R. Werp, Los Gatos, CA (US);
Walter M. Blume, Webster Groves, MO (US);
Francis M. Creighton, Iv, St. Louis, MO (US);
Rogers C. Ritter, Charlottesville, VA (US);
Peter R. Werp, Los Gatos, CA (US);
Walter M. Blume, Webster Groves, MO (US);
Francis M. Creighton, IV, St. Louis, MO (US);
Rogers C. Ritter, Charlottesville, VA (US);
Stereotaxis, Inc., St. Louis, MO (US);
Abstract
The movement of a catheter through a medium, which may be living tissue such as a human brain, is controlled by mechanically pushing a flexible catheter having a magnetic tip through the medium and applying a magnetic field having a magnitude and a direction that guides the mechanically-pushed catheter tip stepwise along a desired path. The magnetic field is controlled in a Magnetic Stereotaxis System by a processor using an adaptation of a PID (proportional, integral, and derivative) feedback method. The magnetic fields are applied by superconducting coils, and the currents applied through the coils are selected to minimize a current metric.