公开(公告)号：US20150077736A1

公开(公告)日：2015-03-19

申请号：US14383507

申请日：2013-03-19

Applicant: UNIVERSITY OF LIMERICK

Inventor： Thomas Reinsch ,  Kort Bremer ,  Elfed Lewis ,  Gabriel Leen ,  Steffen Lochmann

IPC: G01N21/55 ,  G01N21/41 ,  G01N21/29 ,  G01L1/24 ,  G01K11/32

CPC classification number: G01N21/55 ,  G01D5/35312 ,  G01D5/35316 ,  G01K11/3206 ,  G01L1/246 ,  G01N21/29 ,  G01N21/4133 ,  G01N21/7703 ,  G01N2021/7763 ,  G01N2021/7776 ,  G01N2021/7786 ,  G01N2201/088

Abstract: A sensor (1) has a light conductor (2) having a grating (FBG), a cavity (5), and a transparent cavity end wall (4), a light emitter for directing light through the conductor, and a light detector for detecting reflected light, and a processor. The processor is adapted to analyse light reflected due to the grating (FBG, 6) to determine an indication of temperature, light reflected from the end (7) of the cavity (5) to determine an indication of pressure, and also light reflected from the outer surface (8) of the cavity wall (4) to determine an indication of refractive index of a medium outside said cavity wall. The processor may use one output to compensate another, for example pressure and temperature may be used to compensate for variation in refractive index.

Abstract translation: 传感器（1）具有光导体（2），其具有光栅（FBG），空腔（5）和透明腔端壁（4），用于引导光通过导体的光发射器，以及光检测器 检测反射光和处理器。 处理器适于分析由光栅（FBG，6）反射的光，以确定温度的指示，从腔（5）的端部（7）反射的光，以确定压力的指示，以及从 空腔壁（4）的外表面（8）以确定在所述腔壁外部的介质的折射率的指示。 处理器可以使用一个输出来补偿另一个输出，例如压力和温度可用于补偿折射率的变化。

公开(公告)号：US10527502B2

公开(公告)日：2020-01-07

申请号：US15574448

申请日：2016-05-21

Applicant: UNIVERSITY OF LIMERICK

Inventor： Sven Poeggel ,  Dinesh Babu Duraibabu ,  Gabriel Leen ,  Gerard Dooly ,  Elfed Lewis

IPC: G01K11/32 ,  G01K5/32 ,  G01K5/58

Abstract: A temperature sensor (1) has a pressure sensor (10), the distal end of which is inserted in a sealed chamber (2) filled with a liquid. The pressure sensor has a light guide (4), a cavity (14) at a distal end of the light guide, a diaphragm (11) forming a wall of the cavity and being configured to deflect with applied pressure, and a detector to detect changes in light reflection due to deflection of the diaphragm. The liquid (3) which changes volume in response to temperature changes and this volume change is sufficient to change the pressure applied on the diaphragm (11), and the a interrogation system processes pressure data and/or light reflection data to generate an output indicating temperature of the fluid in the chamber.

公开(公告)号：US20130085355A1

公开(公告)日：2013-04-04

申请号：US13629766

申请日：2012-09-28

Applicant: University of Limerick

Inventor： Ulrich Timm ,  Jens Kraitl ,  Sebastian Koball ,  Michael V. Hinz ,  Sergej Andruschenko ,  Hartmut Ewald ,  Elfeld Lewis ,  Deirdre Mcgrath ,  Gabriel Leen

IPC: A61B5/02 ,  A61B5/1455

CPC classification number: A61B5/029 ,  A61B5/02416 ,  A61B5/0245 ,  A61B5/028 ,  A61B5/0295 ,  A61B5/0402 ,  A61B5/6826 ,  A61B2560/0223

Abstract: A system and method for non-invasive monitoring of cardiac activity in a human or animal is disclosed. A radiation source directs radiation through a patient site, and a detector detects radiation after passing through a patient tissue. A processor processes data derived from the detected radiation, determining pulse peaks and troughs and calculating area under a pulse peak to provide a real time cardiac output indicator. The radiation wavelength is on a haemoglobin spectral isosbestic point, not influenced by changes in SpO2 concentration. The processor performs numerical integration of pulse data between troughs, and wherein said integration is performed per pulse. Preferably, the processor monitors trends, thus providing very useful information and reducing need for calibration.

Abstract translation: 公开了用于人或动物心脏活动的非侵入性监测的系统和方法。 辐射源通过患者部位引导辐射，并且检测器在通过患者组织之后检测辐射。 处理器处理从检测到的辐射导出的数据，确定脉冲峰值和谷值以及计算脉冲峰值处的面积以提供实时心输出指示符。 辐射波长在血红蛋白光谱等位点上，不受SpO2浓度变化的影响。 处理器在槽之间执行脉冲数据的数值积分，并且其中每个脉冲执行所述积分。 优选地，处理器监视趋势，从而提供非常有用的信息并减少校准的需要。