# US 10,371,693 B2 · Portable blood glucose measurement device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,371,693 B2 - Document ID: US10371693B2 - Status: Granted - Kind: B2 - Application number: 15/313,258 - Filed: 2015-05-22 - Published: 2017-05-18 - Granted: 2019-08-06 - Earliest claimed: 2014-05-22 - Assignees: I-Sens, Inc. - Applicants: I-Sens, Inc. - Inventors: Jin Won Lee; Chang Woo Ryu; Geun Sig Cha; Hak hyun Nam - Web page: https://patentgrep.com/patent/US10371693B2 ## CPC - G01N 33/49: Blood {(chemical methods for determining blood cell populations G01N33/5094; chemical analysis of blood groups or blood types G01N33/80)} - A61B 5/145: Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value {; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue} (non-radiation detecting or locating of foreign bodies in blood A61B5/06) - A61B 5/14532: {for measuring glucose, e.g. by tissue impedance measurement} - G01J 5/10: using electric radiation detectors - G01N 25/00: Investigating or analyzing materials by the use of thermal means (G01N3/00 - G01N23/00 take precedence) - G01N 27/3274: {Corrective measures, e.g. error detection, compensation for temperature or hematocrit, calibration (coding of calibration information G01N33/48771)} - G01N 33/66: involving blood sugars, e.g. galactose - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - G01J: MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY (light sources F21, H01J, H01K, H05B; investigating properties of materials by optical means G01N) ## Abstract A portable blood glucose measurement device is provided. The device includes, in an externally exposed way, a temperature measurement medium of which the temperature quickly changes according to outside temperature changes provided on one side surface of a case. The device further includes an infrared temperature sensor. The device measures the temperature of the temperature measurement medium with the infrared temperature sensor in a noncontact manner, and calculates a blood glucose measurement result by considering the measured temperature so as to accurately reflect the outside temperature of an actual blood glucose measuring environment. The temperature measurement medium can be configured to sensitively respond to the outside temperature independently from the case such that the temperature of the temperature measurement medium, in accordance with the change in outside temperature, quickly and accurately changes so as to measure the temperature in a more accurate manner. ## Claims ### Claim 1 A portable blood glucose measuring device comprising: a housing having a strip inlet allowing a sensor strip having a blood sample attached thereto to be input into an inner space of the housing, wherein a through-hole is formed in the housing; a printed circuit board disposed within the housing, wherein a blood glucose measuring module configured to measure a blood glucose level by inspecting the blood sampled attached to the sensor strip is disposed on the printed circuit board; a temperature measuring medium disposed at the through-hole formed in the housing; and an infrared temperature sensor disposed within the housing to measure a temperature of the temperature measuring medium, which is disposed in the housing, exposed outside of the housing through the through-hole formed in the outer surface of the housing, and spaced apart from the infrared temperature sensor, in a contactless manner, wherein the blood glucose measuring module produces a result of measurement of the blood glucose level. ### Claim 2 (depends on 1) The portable blood glucose measuring device according to claim 1, wherein the temperature measuring medium is made of a material having a relatively small specific heat. ### Claim 3 (depends on 2) The portable blood glucose measuring device according to claim 2, wherein the housing has a concave recess depressed in a direction of the inner space thereof, the through-hole is formed in a bottom of the concave recess, allowing the temperature measuring medium to fitted thereinto, and the temperature measuring medium is fitted into the through-hole, such that the temperature measuring medium does not protrude from a side surface of the housing. ### Claim 4 (depends on 3) The portable blood glucose measuring device according to claim 3, wherein a plurality of fixing protrusions are formed on an inner circumference of the through-hole to be spaced apart from each other in a radial direction, and the temperature measuring medium is fixedly held by the fixing protrusions. ### Claim 5 (depends on 4) The portable blood glucose measuring device according to claim 4, wherein the fixing protrusions are formed of an insulating material. ### Claim 6 (depends on 2) The portable blood glucose measuring device according to claim 2, wherein the temperature measuring medium has a shape of a thin plate. ### Claim 7 (depends on 6) The portable blood glucose measuring device according to claim 6, wherein the housing has a concave recess depressed in a direction of the inner space thereof, the through-hole is formed in a bottom of the concave recess, allowing the temperature measuring medium to fitted thereinto, and the temperature measuring medium is fitted into the through-hole, such that the temperature measuring medium does not protrude from a side surface of the housing. ### Claim 8 (depends on 7) The portable blood glucose measuring device according to claim 7, wherein a plurality of fixing protrusions are formed on an inner circumference of the through-hole to be spaced apart from each other in a radial direction, and the temperature measuring medium is fixedly held by the fixing protrusions. ### Claim 9 (depends on 8) The portable blood glucose measuring device according to claim 8, wherein the fixing protrusions are formed of an insulating material. ### Claim 10 (depends on 6) The portable blood glucose measuring device according to claim 6, wherein the temperature measuring medium comprises a plurality of embossed protrusions formed on an externally exposed surface. ### Claim 11 (depends on 10) The portable blood glucose measuring device according to claim 10, wherein the housing has a concave recess depressed in a direction of the inner space thereof, the through-hole is formed in a bottom of the concave recess, allowing the temperature measuring medium to fitted thereinto, and the temperature measuring medium is fitted into the through-hole, such that the temperature measuring medium does not protrude from a side surface of the housing. ### Claim 12 (depends on 11) The portable blood glucose measuring device according to claim 11, wherein a plurality of fixing protrusions are formed on an inner circumference of the through-hole to be spaced apart from each other in a radial direction, and the temperature measuring medium is fixedly held by the fixing protrusions. ### Claim 13 (depends on 12) The portable blood glucose measuring device according to claim 12, wherein the fixing protrusions are formed of an insulating material. ### Claim 14 (depends on 1) The portable blood glucose measuring device according to claim 1, wherein the housing has a concave recess depressed in a direction of the inner space thereof, the through-hole is formed in a bottom of the concave recess, allowing the temperature measuring medium to fitted thereinto, and the temperature measuring medium is fitted into the through-hole, such that the temperature measuring medium does not protrude from a side surface of the housing. ### Claim 15 (depends on 14) The portable blood glucose measuring device according to claim 14, wherein a plurality of fixing protrusions are formed on an inner circumference of the through-hole to be spaced apart from each other in a radial direction, and the temperature measuring medium is fixedly held by the fixing protrusions. ### Claim 16 (depends on 15) The portable blood glucose measuring device according to claim 15, wherein the fixing protrusions are formed of an insulating material.