公开(公告)号：AU2005221673A1

公开(公告)日：2005-09-22

申请号：AU2005221673

申请日：2005-03-08

Applicant: NELLCOR PURITAN BENNETT INCORPORATED

Inventor： DEBRECZENY MARTIN ,  BAKER CLARK R JR

IPC: A61B5/00 ,  A61B5/024

Abstract: A method and an apparatus for measuring a physiological parameter, functioning based on obtaining a first signal derived from electromagnetic energy transmitted through a tissue portion at a first wavelength, the first signal including a signal portion corresponding with motion-related events and a signal portion corresponding with arterial pulsation events, where at the first wavelength water is a dominant absorber of electromagnetic energy in the tissue portion; obtaining a second signal derived from electromagnetic energy transmitted through a tissue portion at a second wavelength, the second signal including a signal portion corresponding with motion-related events and a signal portion corresponding with arterial pulsation events, where at the second wavelength hemoglobin is a dominant absorber of electromagnetic energy in the tissue portion; and combining the first signal and the second signal to generate a combined plethysmograph signal, such that the combined signal has a signal portion corresponding with motion-related events that is smaller than that present in the first signal or the second signal.

公开(公告)号：AU2004285542A1

公开(公告)日：2005-05-12

申请号：AU2004285542

申请日：2004-10-28

Applicant: NELLCOR PURITAN BENNETT INCORPORATED

Inventor： DEBRECZENY MARTIN ,  SCHMITT JOSEPH M

IPC: A61B5/00 ,  A61B5/024 ,  G01N21/35

公开(公告)号：AU2005232600A1

公开(公告)日：2005-10-27

申请号：AU2005232600

申请日：2005-04-06

Applicant: NELLCOR PURITAN BENNETT INCORPORATED

Inventor： DEBRECZENY MARTIN

IPC: A61B5/00 ,  A61B5/024 ,  F21V8/00 ,  G02B6/04

Abstract: An apparatus for spatially homogenizing electromagnetic energy transmitted from different sources for measuring a physiological parameter. The apparatus includes a first inlet for receiving electromagnetic energy transmitted from a first source; a second inlet for receiving electromagnetic energy transmitted from a second source; a structure for spatially homogenizing the electromagnetic energy transmitted from the first source with the electromagnetic energy transmitted from the second source to form a spatially-homogenized multi-source electromagnetic energy; and an outlet for delivering the spatially-homogenized multi-source electromagnetic energy to a tissue location for measuring the physiological parameter. The structure for spatially homogenizing includes a first bundle of optical fibers having a first proximal end originating at the first inlet and a first distal end terminating at the outlet; a second bundle of optical fibers having a second proximal end originating at the second inlet and a second distal end terminating at the outlet; wherein at the outlet each first distal end of each fiber of the fibers of the first bundle is spatially mixed with each second distal end of each fiber of the fibers of the second bundle, so as to form a spatially-homogenized multi-source electromagnetic energy received from the first and the second inlets.