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1. (WO2017178817) A NEEDLE PROBE, APPARATUS FOR SENSING COMPOSITIONAL INFORMATION, MEDICAL DRAIN, METHOD OF MEASURING A THERMAL PROPERTY, AND METHOD OF SENSING COMPOSITIONAL INFORMATION

Pub. No.:    WO/2017/178817    International Application No.:    PCT/GB2017/051024
Publication Date: Fri Oct 20 01:59:59 CEST 2017 International Filing Date: Thu Apr 13 01:59:59 CEST 2017
IPC: G01N 27/18
A61B 5/05
Applicants: OXFORD UNIVERSITY INNOVATION LIMITED
Inventors: CHANA, Kamaljit Singh
SAINS, Parvinderpal Singh
Title: A NEEDLE PROBE, APPARATUS FOR SENSING COMPOSITIONAL INFORMATION, MEDICAL DRAIN, METHOD OF MEASURING A THERMAL PROPERTY, AND METHOD OF SENSING COMPOSITIONAL INFORMATION
Abstract:
The invention relates to sensing compositional information about material by measuring thermal properties of the material. In one arrangement there is provided a needle probe for sensing compositional information. The probe comprises a needle (2) having a tip region. A resistive element (5) is attached to the needle at the tip region. A measurement system is configured to: 1) drive an electrical current through the resistive element to apply heating to the resistive element, and 2) measure an electrical response of the resistive element to the heating. A processing unit analyses the measured electrical response of the resistive element to the heating to determine compositional information about material in contact with the tip region.