Search

EP-4085824-B1 - METHOD FOR TRANSMITTING OR RECEIVING BIOMETRIC INFORMATION IN CONTINUOUS BLOOD GLUCOSE MEASUREMENT SYSTEM

EP4085824B1EP 4085824 B1EP4085824 B1EP 4085824B1EP-4085824-B1

Inventors

  • YOU, CHOONG BEOM
  • PARK, HYO SEON

Dates

Publication Date
20260506
Application Date
20210302

Claims (7)

  1. A method for transmitting and receiving biometric information between a sensor transmitter (10) configured to be attachable to a body part of a user and measure the biometric information of the user and a communication terminal (30) configured to receive the biometric information from the sensor transmitter (10), the method comprising: generating, by the sensor transmitter (10), a biometric information message including the biometric information measured through a measurement sensor and an identifier of the biometric information and transmitting the biometric information message to the communication terminal (30) at every regular communication cycle; determining, by the communication terminal (30), whether a biometric information unreceived by the communication terminal (30) exists based on the identifier of the biometric information stored in the communication terminal (30) at every non-receipt communication cycle; when the unreceived biometric information exists, outputting, by the communication terminal (30), an indicator for informing that the unreceived biometric information exists; in response to the indicator, determining whether a user command for requesting the unreceived biometric information is inputted; and when the user command is inputted, generating, by the communication terminal (30), a non-receipt request message for requesting the unreceived biometric information and transmitting the non-receipt request message to the sensor transmitter (10) at every non-receipt communication cycle, wherein the communication terminal (30) outputs a message for informing that the unreceived biometric information exists when the user command is not input within a set time from the time when the indicator is outputted, wherein, when the user command is not input within a predetermined time from the time when the message is outputted, the communication terminal (30) deletes the displayed indicator, wherein the non-receipt communication cycle is greater than the regular communication cycle, and wherein the non-receipt request message includes the one or more identifiers of the biometric information unreceived from the sensor transmitter (10) during the non-receipt communication cycle.
  2. The method for transmitting and receiving the biometric information according to claim 1, wherein the communication terminal (30) determines whether unreceived biometric information exists based on continuity of identifiers of biometric information, wherein, when there is a missing biometric information identifier based on the continuity of identifiers of the biometric information, it is determined that the unreceived biometric information exists.
  3. The method for transmitting and receiving the biometric information according to claim 1 or 2, wherein the sensor transmitter (10) generates and transmits the biometric information message at every regular communication cycle, and the communication terminal (30) determines whether unreceived biometric information exists at every non-receipt communication cycle which is greater than the regular communication cycle, and wherein the non-receipt communication cycle is greater than a storage period from a time point when the biometric information is generated by the sensor transmitter (10) to a time point when the biometric information is deleted from the sensor transmitter (10).
  4. The method for transmitting and receiving the biometric information according to claim 2 or 3, wherein the non-receipt request message is generated by: when the communication terminal (30) receives the biometric information message from the sensor transmitter (10) during the non-receipt communication cycle, determining whether an identifier of the received biometric information is consecutively continued from an identifier of last biometric information stored last in the communication terminal (30) based on the identifier of the biometric information; when the identifier of the received biometric information is not consecutively continued from the identifier of the last biometric information, determining one or more identifiers of unreceived biometric information between the received biometric information and the identifier of the last biometric information; and when the non-receipt communication cycle ends, generating the non-receipt request message including the one or more identifiers of the unreceived biometric information.
  5. The method for transmitting and receiving the biometric information according to claim 2 or 3, wherein the non-receipt request message is generated by: sorting the biometric information received from the sensor transmitter (10) by the communication terminal (30) during the non-receipt communication cycle in order of identifiers of the received biometric information; determining whether one or more identifiers of unreceived biometric information exists based on the identifiers of the sorted biometric information; and when the non-receipt communication cycle ends, generating the non-receipt request message including the one or more identifiers of the unreceived biometric information.
  6. The method for transmitting and receiving the biometric information according to any one of claims 1 to 5, further comprising: determining whether the biometric information message has been received by the communication terminal (30) during a first communication interval set every regular communication cycle; and when the biometric information message has been received by the communication terminal (30) during the first communication interval or when the first communication interval ends, terminating communication with the sensor transmitter (10), wherein when receipt of the biometric information message for the first communication interval succeeds or when the receipt of the biometric information message for the first communication interval fails, the communication with the sensor transmitter (10) is terminated without a receipt confirmation message.
  7. The method for transmitting and receiving the biometric information according to any one of claims 1 to 6, further comprising: determining whether a non-receipt biometric information message including unreceived biometric information has been received from the sensor transmitter (10) by the communication terminal (30) during a second communication interval set every non-receipt communication cycle; and when the non-receipt biometric information message has been received by the communication terminal (30) during the second communication interval or when the second communication interval ends, terminating communication with the sensor transmitter (10), wherein a receipt confirmation message indicating whether the non-receipt biometric information message has been successfully received during the second communication interval is transmitted to the sensor transmitter (10).

Description

TECHNICAL FIELD The present disclosure generally relates to a method for transmitting and receiving biometric information between a sensor transmitter and a communication terminal in a continuous blood glucose measurement system, in more detail, a method for transmitting and receiving biometric information, the method which does not determine whether biometric information has been successfully transmitted and received between a sensor transmitter and a communication terminal at every regular communication cycle and determines whether unreceived biometric information exists only during a non-receipt communication cycle relatively greater than a regular communication cycle, and, when the unreceived biometric information exists, receives the unreceived biometric information, thereby reducing the computational load required to determine whether unreceived biometric information exists at every regular communication cycle and the energy waste required to receive the unreceived biometric information at every regular communication cycle. BACKGROUND Diabetes is a chronic medical condition that is common in modern people, and in the Republic of Korea, there are 2 million diabetes patients, about 5% of the total population. Diabetes occurs when the absolute level of the sugar level in blood is high due to the absolute deficiency or relative insufficiency of insulin, produced by the pancreas, caused by various reasons such as obesity, stress, poor eating habits, and inherited hereditary factors and imbalance regarding glucose in the blood. The blood usually contains a certain concentration of glucose, and tissue cells gain energy from the glucose. However, when the glucose is increased excessively more than needed, the glucose cannot be properly stored in the liver, muscle, or adipose tissue and is accumulated in the blood, because of this, patients with diabetes maintain a much higher blood glucose level than normal people, and as excessive blood glucose passes through the tissues and is discharged into the urine, it results in deficiency of glucose, which is absolutely necessary for all tissues of the body, thereby causing abnormalities in respective body tissues. Diabetes is characterized by substantial absence of subjective symptoms at the beginning of the condition, when diabetes progresses, diabetes-specific symptoms such as overdrink, overeat, polyuria, weight loss, weariness, skin itchiness, and lower ability of naturally healing on injury on hands and feet are shown, and further progression of diabetes leads to complications such as visual disturbances, hypertension, kidney disease, paralysis, periodontal disease, muscle spasms and neuralgia, as well as gangrene. In order to diagnose diabetes beforehand and manage to prevent the progression of diabetes into complications associated therewith, systematic blood glucose measurement and treatment should be performed. Diabetes need to constantly measure blood glucose for management, so the demand for devices related to blood glucose measurement is steadily increasing. It has been confirmed through various studies that, when diabetic patients strictly control the management of blood glucose, the incidence of complications of diabetes is significantly reduced. Accordingly, it is very important for diabetic patients to measure blood glucose regularly for blood glocuse management. In general, a finger prick type method is mainly used for blood glucose control in diabetic patients. This blood prick type method helps diabetic patients to manage their blood glucose, but because only the result at the time of measurement is displayed, there is a problem that it is difficult of precisely monitoring the blood glucose level that changes frequently. In addition, since the blood prick type blood glucose meter needs to collect blood every time to measure blood glucose frequently during the day, there is a problem in that the burden of blood collection is huge for diabetic patients. Diabetics patients generally experience hyperglycemia and hypoglycemia, and an emergency may occur in the hypoglycemic conditions. Hypoglycemia occurs when sugar content is not kept for a long time, and the patients may become unconscious or die in a worst case. Accordingly, rapid discovery of the hypoglycemic condition is critically important for diabetics. The figure prick type blood glucose meter intermittently measuring glucose have limited ability to accurately measure blood glucose levels. Recently, to overcome such a drawback, continuous glucose monitoring systems (CGMSs) inserted into the human body to measure a blood glucose level every few minutes have emergency situation. The continuous glucose monitoring system includes a sensor transmitter configured to be attachable to a body part of a user and measure blood glucose by extracting body fluid, a communication terminal configured to output the received blood glucose level, and so on. The sensor transmitter measures the blood glucose of the