Patch type thermometer containing a polymer that can be phase changed from a solid phase to a liquid phase

Patent metadata

Field	Value
Publication number	US-10746609-B2
Application number	US-201916512580-A
Country	US
Kind code	B2
Filing date	Jul 16, 2019
Priority date	Jul 11, 2018
Publication date	Aug 18, 2020
Grant date	Aug 18, 2020

Abstract

The present invention relates to a patch type thermometer containing a polymer that can be phase changed from a solid phase to a liquid phase. The patch type thermometer provided in an aspect of the present invention demonstrates high precision since it does not include conductive particles which have been a reason of disadvantage of the conventional temperature sensor, and has the effect of no temperature deviation in repeated temperature measurements because it is composed of such a single polymer material that is phase changed in a specific temperature range so that the polymer material can be reversibly changed in the volume and shape.

First claim

What is claimed is:

1. A patch type thermometer comprising:
a magnetic sensor;
a first polymer layer laminated on the magnetic sensor;
a second polymer layer coated on a surface of the first polymer layer; and
a magnet stacked on the second polymer layer, in which a first polymer of the first polymer layer can be phase-changed from a solid phase to a liquid phase.

2. The patch type thermometer according to claim 1 , wherein a second polymer of the polymer layer is not phase-changed from the solid phase to the liquid phase.

3. The patch type thermometer according to claim 1 , wherein the first polymer layer and the second polymer layer are formed as a laminated thin film.

4. The patch type thermometer according to claim 1 , wherein body temperature is measured by measuring changes of magnetic field strength caused by a reversible change in distance between the magnetic sensor and the magnet.

5. The patch type thermometer according to claim 4 , wherein the change in distance between the magnetic sensor and the magnet is caused by a volume change of the first polymer.

6. The patch type thermometer according to claim 5 , wherein the first polymer is phase-changed from the solid phase to the liquid phase as temperature rises, thereby a volume of the first polymer being changed.

7. The patch type thermometer according to claim 6 , wherein the temperature is in a range of 35° C. to 40° C.

8. A method for measuring body temperature comprising the following steps:
contacting the patch type thermometer of claim 1 to a living body; and
measuring a distance change between the magnetic sensor and the magnet,
wherein the body temperature is measured by measuring a change of magnetic field strength caused by the distance change between the magnetic sensor and the magnet.

9. The method for measuring body temperature according to claim 8 , wherein, the body temperature is in a range of 35° C. to 40° C.

Assignees

• Daegu Gyeongbuk Inst Science & Tech

Inventors

• Lee Sungwon
• Jeong Wooseong

Classifications

• G01K13/20 Primary

  Clinical contact thermometers for use with humans or animals · CPC title

• G01K5/00 Primary

  Measuring temperature based on the expansion or contraction of a material (G01K9/00 takes precedence; giving other than momentary value of temperature G01K3/00) · CPC title

• B32B2307/208

  Magnetic, paramagnetic · CPC title

• A61B5/05

  Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves (measuring movement of the entire body or parts thereof A61B5/11; detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof A61B5/24) · CPC title

• B32B27/08

  of synthetic resin · CPC title