公开(公告)号：US11426105B2

公开(公告)日：2022-08-30

申请号：US16444960

申请日：2019-06-18

Applicant: Masimo Corporation

Inventor： Samuel Reichgott ,  Walter J. Shakespeare ,  George Kechter ,  Phillip William Wallace ,  Matthew J. Schurman

IPC: A61B5/1455 ,  A61B5/00 ,  A61B5/026 ,  A61B5/145

Abstract: Optical coherence tomography (herein “OCT”) based analyte monitoring systems are disclosed. In one aspect, techniques are disclosed that can identify fluid flow in vivo (e.g., blood flow), which can act as a metric for gauging the extent of blood perfusion in tissue. For instance, if OCT is to be used to estimate the level of an analyte (e.g., glucose) in tissue, a measure of the extent of blood flow can potentially indicate the presence of an analyte correlating region, which would be suitable for analyte level estimation with OCT. Another aspect is related to systems and methods for scanning multiple regions. An optical beam is moved across the surface of the tissue in two distinct manners. The first can be a coarse scan, moving the beam to provide distinct scanning positions on the skin. The second can be a fine scan where the beam is applied for more detailed analysis.

公开(公告)号：US10368787B2

公开(公告)日：2019-08-06

申请号：US14711610

申请日：2015-05-13

Applicant: Masimo Corporation

Inventor： Samuel Reichgott ,  Walter J. Shakespeare ,  George Kechter ,  Phillip William Wallace ,  Matthew J. Schurman

IPC: A61B5/00 ,  A61B5/026 ,  A61B5/145 ,  A61B5/1455

Abstract: Optical coherence tomography (herein “OCT”) based analyte monitoring systems are disclosed. In one aspect, techniques are disclosed that can identify fluid flow in vivo (e.g., blood flow), which can act as a metric for gauging the extent of blood perfusion in tissue. For instance, if OCT is to be used to estimate the level of an analyte (e.g., glucose) in tissue, a measure of the extent of blood flow can potentially indicate the presence of an analyte correlating region, which would be suitable for analyte level estimation with OCT. Another aspect is related to systems and methods for scanning multiple regions. An optical beam is moved across the surface of the tissue in two distinct manners. The first can be a coarse scan, moving the beam to provide distinct scanning positions on the skin. The second can be a fine scan where the beam is applied for more detailed analysis.