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:
Jun. 29, 1993
Filed:
Apr. 24, 1991
John R Ives, Lexington, MA (US);
Norman R Mainwaring, Boston, MA (US);
Beth Israel Hospital Association, Boston, MA (US);
Abstract
An ambulatory electroencephalography (EEG) system includes a self-powered recording apparatus adapted to be worn by a patient. The recording apparatus includes an A/D converter and a digital memory capable of storing digital data representing analog waveform signals derived from a large number of electrodes secured to the patient. Recording of digital waveform data is governed by a controller, which upon the occurrence of a neurologically significant event (such as actuation of a switch by the patient or detection of EEG waveforms indicating a seizure state) causes the storage of waveform data over an interval immediately preceding the event and immediately following the event.