公开(公告)号：AT378004T

公开(公告)日：2007-11-15

申请号：AT02763228

申请日：2002-07-03

Applicant: ASPECT MEDICAL SYSTEMS INC

Inventor： SHAMBROOM JOHN ,  SMITH CHARLES

IPC: A61B5/308 ,  A61B5/276

Abstract: A system for measuring bioelectric impedance in real time, in the presence of interference and noise is disclosed. A small electric current is injected into a biopotential electrode system, and then the measurement is tested for contamination by electrical interference or other noise sources.

公开(公告)号：AT390886T

公开(公告)日：2008-04-15

申请号：AT00970431

申请日：2000-06-09

Applicant: ASPECT MEDICAL SYSTEMS INC

Inventor： CORDERO RAFAEL ,  DEVLIN PHILIP ,  CHAMOUN NASSIB ,  SHAMBROOM JOHN ,  MERRICK EDWIN ,  MELO JOAO

IPC: A61B5/308

Abstract: A sensor system which includes a biopotential signal monitor, a smart sensor and the accompanying hardware and software interface which authenticates the source and validity of the smart sensor and also verifies that the smart sensor meets various criteria for use.

公开(公告)号：AT506006T

公开(公告)日：2011-05-15

申请号：AT02746642

申请日：2002-06-21

Applicant: ASPECT MEDICAL SYSTEMS INC

Inventor： SHAMBROOM JOHN ,  SMITH CHARLES ,  CAI HONGMEI ,  MERRICK EDWIN

IPC: A61B5/308

Abstract: A system and method of identifying and removing artifact from radio frequency noise from biopotentials identifies epochs contaminated with radio frequency noise. Contaminated epochs are then replaced with recent uncontaminated epochs stored in a buffer, depending on the current level of artifact and the availability of suitable data. Discontinuities arising at the beginning of the replaced epochs are smoothed by means of a windowing function.