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:
Apr. 22, 2003
Filed:
Aug. 08, 2001
Applicant:
Inventors:
David J. Perreault, Brookline, MA (US);
Scott Mogren, Holliston, MA (US);
Assignee:
R. B. Carr Engineering, Onc., Newton, MA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61N 2/00 ; G01R 2/728 ;
U.S. Cl.
CPC ...
A61N 2/00 ; G01R 2/728 ;
Abstract
An electromagnetic stimulator circuit has a precharge power supply, a capacitor, a set of switches, and a stimulator coil. The switches, which can be implemented using a variety of devices, enable flexible control over the coil current waveform without requiring the physical reconfiguration of circuit elements. The shape of the output current pulse is controlled by the modulation of the switches, and much of the energy applied to the coil is returned from the coil to the capacitor for reuse on the succeeding pulse. Less power is required and less heat energy is generated.