Glucose tolerance analyzer, glucose tolerance analyzing system, and storage medium

• US 9,560,999 B2
• Filed: 10/16/2012
• Issued: 02/07/2017
• Est. Priority Date: 10/17/2011
• Status: Active Grant

• Current Assignee: Sysmex Corporation
• Original Assignee: Sysmex Corporation
• Inventors: Fujiwara, Takeyoshi, Yuno, Mariko, Egawa, Shigenobu, Sato, Toshiyuki, Okada, Seiki
• Primary Examiner(s): Riggs, II, Larry D
• Application Number:
  US13/652,756
• Publication Number:
  US 20130096842A1
• Time in Patent Office: 1,575 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: A61B 2560/0456 Apparatus provided with a docking unit
• CPC Class Codes: A61B 2560/0487 Special user inputs or interfaces
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/14546 for measuring analytes not otherwise provided for, e.g. ions, cytochromes
• CPC Class Codes: A61B 5/1455 using optical sensors, e.g. spectral photometrical oximeters
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150259 Improved gripping, e.g. with high friction pattern or projections on the housing surface or an ergonometric shape
• CPC Class Codes: A61B 5/150412 Pointed piercing elements, e.g. needles, lancets for piercing the skin blade-like piercing elements A61B5/150442
• CPC Class Codes: A61B 5/150969 Low-profile devices which resemble patches or plasters, e.g. also allowing collection of blood samples for testing
• CPC Class Codes: A61B 5/150984 Microneedles or microblades
• CPC Class Codes: A61B 5/15113 Manually triggered, i.e. the triggering requires a deliberate action by the user such as pressing a drive button
• CPC Class Codes: A61B 5/15117 comprising biased elements, resilient elements or a spring, e.g. a helical spring, leaf spring, or elastic strap
• CPC Class Codes: A61B 5/1513 comprising linear sliding guides comprising tooth-shaped elements A61B5/15132
• CPC Class Codes: A61B 5/1519 comprising driving means, e.g. a spring, for propelling the piercing unit
• CPC Class Codes: A61B 5/6824 Arm or wrist
• CPC Class Codes: A61B 5/7475 User input or interface means, e.g. keyboard, pointing device, joystick

Abstract

A glucose tolerance analyzer comprising: an accepting section configured to accept inputs of information regarding a type of food or drink ingested by a subject, information regarding an intake amount of the food or drink, and information regarding an amount of glucose in the subject after the ingestion of the food or drink; an output section configured to output an analysis result of glucose tolerance; and a controller configured to: calculate a reference value for analyzing glucose tolerance of the subject based on the accepted information regarding the type of the food or drink ingested by the subject and the information regarding the intake amount of the food or drink, and based on a predetermined index regarding blood glucose increase due to food or drink; analyze the glucose tolerance of the subject based on the accepted information regarding the amount of glucose and based on the calculated reference value; and control the output section to output an obtained analysis result as an analysis result of glucose tolerance.

Claims

1. A glucose tolerance analyzer comprising:

an accepting section configured to accept inputs of information regarding a type of food or drink ingested by a subject, information regarding an intake amount of the food or drink, and information regarding an amount of glucose in tissue fluid accumulated in a collector comprising a laminated structure and configured to contact a skin of the subject after the ingestion of the food or drink;

an output section configured to output an analysis result of glucose tolerance; and

a controller configured to;

calculate a reference value for analyzing glucose tolerance of the subject based on the accepted information regarding the type of the food or drink ingested by the subject and the information regarding the intake amount of the food or drink, and based on a predetermined index regarding blood glucose increase due to food or drink,

wherein the reference value is expressed as (Th(AUC))=A+(B/(C/GL)),

where A represents a fasting-blood-glucose-AUC value, B represents a reference value corresponding to an increase in a blood glucose level, C represents a glycemic load corresponding to a given amount of glucose, and GL represents a glycemic load calculated based on a glycemic index corresponding to the food or drink ingested by the subject and the intake amount of the food or drink;

analyze the glucose tolerance of the subject based on the accepted information regarding the amount of glucose and based on the calculated reference value, such that a type of glucose tolerance is discriminated; and

control the output section to output an obtained analysis result as an analysis result of glucose tolerance.

2. The glucose tolerance analyzer of claim 1, wherein the index regarding blood glucose increase due to food or drink comprises a glycemic index.

3. The glucose tolerance analyzer of claim 1, wherein the accepted information regarding the amount of glucose comprises an area under blood glucose concentration-time curve (blood glucose AUC) or a value corresponding to the blood glucose AUC.

4. The glucose tolerance analyzer of claim 3, wherein

A represents a fasting-blood-glucose-based two-hour blood glucose AUC value.

5. The glucose tolerance analyzer of claim 1, wherein the accepted information regarding the amount of glucose is information regarding the amount of glucose in the tissue fluid accumulated in the collector, after the ingestion of the food or drink, from skin of the subject on which a process for promoting extraction of the tissue fluid from the skin has been performed.

6. The glucose tolerance analyzer of claim 5, wherein the amount of glucose comprises an amount of glucose in the tissue fluid collected in the collector, after two hours have elapsed since the ingestion of the food or drink, or after two hours have elapsed with the collector being in contact with the skin.

7. The glucose tolerance analyzer of claim 5, wherein the accepted information regarding the amount of glucose comprises a numerical value obtained by correcting the amount of glucose in the tissue fluid by an amount of an inorganic ion in the tissue fluid.

8. The glucose tolerance analyzer of claim 7, wherein the inorganic ion comprises a sodium ion.

9. The glucose tolerance analyzer of claim 1, wherein when the accepted information regarding the amount of glucose is information indicating that the amount of glucose exceeds the reference value, the controller generates an analysis result indicating that the subject has abnormal glucose tolerance.

10. The glucose tolerance analyzer of claim 1, wherein when the accepted information regarding the amount of glucose is information indicating that the amount of glucose is less than or equal to the reference value, the controller generates an analysis result indicating that the subject does not have abnormal glucose tolerance.

11. The glucose tolerance analyzer of claim 1, further comprising:

an obtaining section configured to obtain information regarding nutrition guidance based on the accepted information regarding the type of the food or drink ingested by the subject and based on the analysis result generated by the controller,

wherein the controller further controls the output section to output the information obtained by the obtaining section.

12. A glucose tolerance analyzing system comprising:

a collector comprising a laminated structure in contact with the skin of a subject and configured to accumulate tissue fluid from the subject;

a first information processing apparatus and a second information processing apparatus, wherein

the first information processing apparatus comprises;

an accepting section configured to accept inputs of information regarding a type of food or drink ingested by the subject, information regarding an intake amount of the food or drink, and information regarding an amount of glucose in the tissue fluid of the subject after the ingestion of the food or drink;

a first transmission section configured to transmit the information accepted by the accepting section, to the second information processing apparatus;

a first reception section configured to receive an analysis result of glucose tolerance of the subject from the second information processing apparatus; and

an output section configured to output the analysis result received by the first reception section, and

the second information processing apparatus comprises;

a second reception section configured to receive the information transmitted from the first transmission section;

a controller configured to calculate a reference value for analyzing the glucose tolerance of the subject based on the received information regarding the type of the food or drink ingested by the subject and the received information regarding the intake amount of the food or drink, and based on a predetermined index regarding blood glucose increase due to food or drink,

wherein the reference value is expressed as (Th(AUC))=A+(B/(C/GL)),

where A represents a fasting-blood-glucose-based AUC value, B represents a reference value corresponding to an increase in a blood glucose level, C represents a glycemic load corresponding to a given amount of glucose, and GL represents a glycemic load calculated based on a glycemic index corresponding to the food or drink ingested by the subject and the intake amount of the food or drink,

and the controller is further configured to analyze the glucose tolerance of the subject based on the received information regarding the amount of glucose in the tissue fluid of the subject received by the second reception section and based on the calculated reference value, such that a type of glucose tolerance is discriminated;

and

a second transmission section configured to transmit an analysis result obtained by the controller to the first information processing apparatus.

13. The glucose tolerance analyzing system of claim 12, wherein the index regarding blood glucose increase due to food or drink comprises a glycemic index.

14. The glucose tolerance analyzing system of claim 12, wherein the received information regarding the amount of glucose is an area under blood glucose concentration-time curve (blood glucose AUC) or a value corresponding to the blood glucose AUC.

15. The glucose tolerance analyzing system of claim 14, wherein A represents a fasting-blood-glucose-based two-hour blood glucose AUC value.

16. The glucose tolerance analyzing system of claim 12, wherein the received information regarding the amount of glucose is information regarding an amount of glucose in the tissue fluid collected, after the ingestion of the food or drink, from the skin of the subject on which a process for promoting extraction of the tissue fluid from the skin has been performed.

17. A glucose tolerance analyzing method comprising:

providing a collector comprising a laminated structure in contact with the skin of a subject and configured to accumulate tissue fluid from the subject;

an accepting step of accepting inputs of information regarding a type of food or drink ingested by a subject, information regarding an intake amount of the food or drink, and information regarding an amount of glucose in the tissue fluid of the subject after the ingestion of the food or drink;

an output step of outputting an analysis result of glucose tolerance; and

a control step of;

calculating a reference value for analyzing glucose tolerance of the subject based on the accepted information regarding the type of the food or drink ingested by the subject and the accepted information regarding the intake amount of the food or drink, and based on a predetermined index regarding blood glucose increase due to food or drink

wherein the reference value is expressed as (Th(AUC))=A+(B/(C/GL)),

where A represents a fasting-blood-glucose-based AUC value, B represents a reference value corresponding to an increase in a blood glucose level, C represents a glycemic load corresponding to a given amount of glucose, and GL represents a glycemic load calculated based on a glycemic index corresponding to the food or drink ingested by the subject and the intake amount of the food or drink;

analyzing the glucose tolerance of the subject based on the accepted information regarding the amount of glucose and based on the calculated reference value, such that a type of glucose tolerance is discriminated; and

controlling an obtained analysis result to be outputted in the output step as an analysis result of glucose tolerance.

18. The glucose tolerance analyzing method of claim 17, wherein the index regarding blood glucose increase due to food or drink comprises a glycemic index.

19. A non-transitory storage medium having stored thereon computer-executable programs executed by at least one processor of a computer system which is connected to an output device and an input device, the programs controlling the at least one processor to perform the steps of:

controlling an accepting section to accept, via the input device, inputs of information regarding a type of food or drink ingested by a subject, information regarding an intake amount of the food or drink, and information regarding an amount of glucose in the subject after the ingestion of the food or drink;

calculating a reference value for analyzing glucose tolerance of the subject based on the accepted information regarding the type of the food or drink ingested by the subject and the accepted information regarding the intake amount of the food or drink, and based on a predetermined index regarding blood glucose increase due to food or drink,

wherein the reference value is expressed as (Th(AUC))=A+(B/(C/GL)),

where A represents a fasting-blood-glucose-based blood glucose AUC value, B represents a reference value corresponding to an increase in a blood glucose level, C represents a glycemic load corresponding to a given amount of glucose, and GL represents a glycemic load calculated based on a glycemic index corresponding to the food or drink ingested by the subject and the intake amount of the food or drink;

analyzing the glucose tolerance of the subject based on the accepted information regarding the amount of glucose accepted by the accepting section and based on the calculated reference value, such that a type of glucose tolerance is discriminated; and

controlling the output device to output an obtained analysis result.