Wrist-worn blood glucose monitoring device

Abstract

The aim of the invention is to provide for virtually continuous monitoring of a person's blood glucose level in the case of the occurrence and repair of a fault in a wrist-worn blood glucose monitoring device caused by the breakage of wires or failure of a sensor which are located in a section of a strap or wristband by permitting expeditious replacement of the section containing the sensor and wires. The technical results of the invention include: permitting expeditious repair of a wire breakage or sensor failure-related fault in the device by replacement of a section of the strap or wristband, wherein the time required to replace the section of the strap or wristband is not greater than the interval between blood glucose level measurements; permitting the use of the body of the device with strap or wristband sections of different lengths; and permitting expeditious replacement of sections of the strap or wristband of the device if the wearer has an allergic reaction to the material of the sections of the strap or wristband.

Description

[0001] WRIST-WEARABLE DEVICE FOR MONITORING HUMAN BLOOD GLUCOSE CONTENT

[0002] DESCRIPTION

[0003] The invention relates to medicine and technology, specifically to the non-invasive determination of changes in glucose levels in human blood, and can find application in the creation of wrist devices for this purpose, as well as in the creation of socially oriented systems for the early diagnosis of diabetes and related diseases based on wrist devices.

[0004] Prior art.

[0005] For diabetics, constant blood glucose monitoring is vital. New developments are currently being used for this purpose, based on non-invasive methods that measure health parameters without drawing blood. Previously, patients had to measure their sugar levels invasively, which is extremely painful and involves puncturing the skin.

[0006] There are many methods and devices developed for non-invasive monitoring of glucose levels in human blood.

[0007] The best modern non-invasive glucometer is a wristwatch-style device / 1 / —a "smartwatch"—for monitoring pulse wave signals, determining blood sugar levels, and other blood parameters. It features manual radial artery location and sensor targeting. Changes in pulse wave parameters are used to determine changes in a person's blood sugar and other parameters.

[0008] The device comprises a housing, a two-section strap for attaching the wrist device to a person's hand, a control and display module located in the housing, a sensor located on one of the strap sections, a radiation emitter and a receiver of radiation reflected from human tissue, located in the sensor, and a control and display module comprising a power source, a control and data processing unit, and a data display panel; the housing contains devices for attaching the strap sections; and the sensor (in particular, the radiation emitter and the receiver of radiation reflected from human tissue) is connected to the control and display module located in the housing by means of wires. Moreover, part of the wires connecting the sensor to the control module are located in the strap section, and the other part in the housing. The strap sections are not designed to be attached to the housing. The housing with the control and display module resembles a wristwatch in appearance.

[0009] During operation, the sensor is positioned above the radial artery on the patient's arm. The sensor is also called a mobile remote unit. The mobile remote unit is so named because it can be adjusted to move relative to the patient's arm, either along the strap or together with the strap.

[0010] The sensor can also be called a mobile unit or a mobile unit - sensor, or a mobile unit with an infrared sensor, or an infrared sensor.

[0011] A significant drawback of smartwatches is that if, for example, a wire inside the strap breaks (at a bend in the strap) or a sensor stops working, the smartwatch must be sent to the manufacturer for repair, which is time-consuming.

[0012] And repair time significantly exceeds the interval between blood glucose measurements. Experience shows that replacement time can range from a few days to several months. This is unacceptable for diabetics.

[0013] In this case, by the word STRAP we also mean the word BRACELET.

[0014] An analog of the invention is a device for determining blood glucose levels using a non-invasive infrared light sensor with a teletransmission function (CN205031270U, ​​published February 17, 2016). The analog discloses the design of a non-invasive blood glucose sensor. The sensor includes an emitter and receiver for radiation reflected from human tissue, an STM32 microprocessor, a pressure control module with a pressure sensor, and a drive module.

[0015] The features of the analogue that coincide with the features of the invention: a wrist device for non-invasive monitoring of glucose levels in human blood, a housing with devices for fastening strap sections; a strap consisting of two sections for fastening the wrist device on a person's hand; a control and display module located in the housing; an emitter and a receiver of radiation reflected from human tissue, located in a mobile remote unit, which, when adjusting the wrist device, is designed with the ability to move relative to the person's hand.

[0016] The disadvantage of the analog is that if, for example, the wire inside the strap breaks (at the bend of the strap) or the sensor stops working, the analog needs to be sent to the manufacturer for repair, which is time-consuming.

[0017] Another analogue of the invention is a wrist device for non-invasive monitoring of glucose levels in human blood (CN104188636A, published 12 / 10 / 2014).

[0018] This device resembles a wristwatch and is designed to monitor pulse wave signals, determine blood sugar levels and other blood parameters, and manually locate the radial artery.

[0019] In addition, the wrist device can perform the functions of an electronic wristwatch, showing the time, date, day of the week, etc.

[0020] The wrist-worn device for monitoring pulse wave signals consists of a control and display module and left and right strap sections. At the end of one of the strap sections, a mounting recess (a mounting hole in one of the strap layers) is provided, into which a sensor (the mobile unit—the sensor) is installed and secured. The sensor is connected to the control and display module via a flexible printed circuit board (FPC) wired inside the strap.

[0021] The features of the analogue, coinciding with the features of the invention: a wrist device for non-invasive monitoring of glucose content in human blood, comprising a housing with devices for fastening strap sections, a strap consisting of two sections for fastening the device on a person's hand, a control and display module located in the housing; an emitter and a receiver of radiation reflected from human tissue, located in a sensor that is designed with the ability to move along the strap and, in addition, during the operation of the device, the emitter is directed at the radial artery of the person's hand.

[0022] The disadvantage of the analog is that if, for example, the wire inside the strap breaks (at the bend of the strap) or the sensor stops working, the analog needs to be sent to the manufacturer for repair, which is time-consuming.

[0023] The prototype of the invention is a wrist device for non-invasive monitoring of glucose levels in human blood / 1 / , which comprises a housing, a two-section strap for fastening the wrist device on a person's hand, a control and display module located in the housing; a sensor located on one of the strap sections; a radiation emitter and a receiver of radiation reflected from human tissue, located in the sensor; and the housing contains devices for fastening the strap sections; wherein the radiation emitter and the receiver of radiation reflected from human tissue, located in the sensor, are connected to the control and display module, located in the housing, by means of wires.

[0024] The above-mentioned features of the prototype coincide with the features of the invention.

[0025] In addition, the control and display module contains a power source, a control and data processing unit, and a data display panel.

[0026] A drawback of the prototype is its inability to ensure continuous blood glucose monitoring in the event of a malfunction of the wrist-worn non-invasive blood glucose monitoring device, caused by broken wires or a faulty sensor located in the strap section. Replacement of the strap section with a functioning sensor and wires is only possible at the manufacturer's factory.

[0027] The prototype also does not provide the ability to replace sections of the strap, for example, with smaller ones that would be more comfortable for a child.

[0028] The prototype does not have the ability to replace the strap sections of the noninvasive blood glucose monitoring device if an allergy to the strap section material is detected. If an allergy to the strap section material is detected with the prototype, a new noninvasive blood glucose monitoring device with a suitable strap must be purchased or the device must be sent to the manufacturer for replacement. This is a time-consuming process.

[0029] The essence of the invention.

[0030] The purpose of the invention is to ensure practically continuous monitoring of the glucose content in human blood when a malfunction of a wrist device for non-invasive monitoring of glucose content in human blood occurs and is eliminated, caused by a break in the wires or a breakdown of the sensor located in the strap section, due to the prompt replacement with a strap section with a serviceable sensor and wires.

[0031] The aim is achieved in that a wrist device for non-invasive monitoring of glucose levels in human blood comprises a housing, a two-section strap for fastening the wrist device on a person's hand, a control and display module located in the housing; a sensor located on one of the strap sections; a radiation emitter and a receiver of radiation reflected from human tissues, located in the sensor; and the housing contains devices for fastening the strap sections; wherein the radiation emitter and the receiver of radiation reflected from human tissues, located in the sensor, are connected to the control and display module located in the housing by means of wires, and differs from the prototype in that the strap sections are designed with the possibility of being attached to the housing and detached from the housing by means of devices for fastening the strap sections, wherein at least one device for fastening the strap section contains an electrical connector for connecting the wires.

[0032] In a particular embodiment of the invention, the device can be designed in such a way that part of the wires are located inside the strap section or located on the surface of the strap section.

[0033] In a particular embodiment of the invention, the device can be designed in such a way that part of the wires are located on the inner surface of the strap section.

[0034] In a particular embodiment of the invention, the device can be designed in such a way that part of the wires are located on the outer surface of the strap section.

[0035] A wire is a conductor of electric current that consists of one or more cores.

[0036] The technical results of the invention are:

[0037] 1. A device for non-invasive blood glucose monitoring, such as a broken wire or sensor, can be quickly repaired by replacing the strap section with the faulty wires or sensor with a new one with working wires and sensor. Moreover, the time it takes to replace the strap section does not exceed the time between blood glucose measurements. According to the invention, a strap section with a damaged wire or a broken sensor can be replaced with a new working section at home. Replacement time is up to five minutes. Additionally, testing the device with the new strap section requires up to twenty minutes. For example, if a wire inside the strap breaks (at a bend) or the sensor stops working with the prototype, the prototype must be sent to the manufacturer for repair, which is time-consuming.

[0038] Moreover, the time it takes to fix the malfunction (repair) significantly exceeds the interval between blood glucose measurements. Replacement times can range from a few days to several months. While the prototype is being repaired, the patient is forced to measure their blood sugar levels invasively.

[0039] In an invasive method for determining blood sugar levels, a finger puncture is performed using a lancet. A drop of blood is then placed on a test strip, which is then inserted into a measuring device, which in turn determines the sugar content and displays the result in a given physical unit.

[0040] Invasive blood sampling can expose the patient to a number of blood-borne diseases, including AIDS, hepatitis, sepsis, and others. It's also worth noting that test strips are expensive. For example, 50 "Satellite Express" test strips currently cost up to 650 rubles (over $7).

[0041] From the above it follows that it is vital for the patient to reduce the time it takes to troubleshoot a device for non-invasive monitoring of glucose levels in human blood.

[0042] 2. The noninvasive blood glucose monitoring device can be used with strap sections of varying lengths, materials, and colors. Specifically, the same noninvasive blood glucose monitoring device can be used by both an adult and a child. Alternatively, the same noninvasive blood glucose monitoring device can be used by multiple people. Each person has their own strap section with a sensor.

[0043] The prototype solves this technical problem by adjusting the strap section to fit the other wrist. This creates a new kinked area in the strap section. As many people use the prototype as there are new kinks in the strap section and the wires, this causes rapid wear and tear.

[0044] 3. The strap sections of the noninvasive blood glucose monitoring device can be quickly replaced if an allergy to the strap material is detected. The prototype does not address this issue.

[0045] When using a prototype, if an allergy to the strap section material is detected, a new non-invasive blood glucose monitoring device with a suitable strap must be purchased or the device must be sent to the manufacturer for replacement of the strap sections. This is a time-consuming process.

[0046] List of figures.

[0047] Fig. 1 shows a device for noninvasively monitoring human blood glucose levels with strap sections. The bottom of the case is shown. The sensor is located on the left (from the viewer's perspective) strap section. The strap sections are attached to the case via strap section fastening devices (clasps).

[0048] The left strap section attachment device contains an electrical connector for connecting wires.

[0049] Fig. 2 shows a device for noninvasively monitoring human blood glucose levels with strap sections. The bottom of the housing is shown. The sensor is located on the right (from the viewer's perspective) strap section. The strap sections are attached to the housing via strap section fastening devices.

[0050] The right strap section attachment device contains an electrical connector for connecting wires.

[0051] Fig. 3 shows a device for noninvasively monitoring human blood glucose levels with strap sections. The bottom of the case is shown. The sensor is located on the right (from the viewer's perspective) section of the strap. The strap sections are attached to the case via strap section fastening devices.

[0052] The right and left strap section attachment devices contain electrical connectors for connecting wires. Fig. 4 shows the control and display module with a power supply, a control and data processing unit, and a data display panel.

[0053] Fig. 5 shows a device for fastening a section of a strap with an electrical connector for connecting wires.

[0054] Fig. 6 shows a prototype - a sensor at the end of a strap section, connected to the control and display module via wires.

[0055] Fig. 7 shows the claimed device for noninvasively monitoring human blood glucose levels. The sensor is located at the end of a strap section, connected to the control and display module via wires. The housing contains a strap section attachment device with an electrical connector for the wires.

[0056] Disclosure of invention.

[0057] A wrist-worn device for noninvasively monitoring human blood glucose levels comprises a housing 1 (see Fig. 1) and a two-section strap for attaching the wrist-worn device to a person's hand. The section facing the viewer to the right is designated 2. The section facing the viewer to the left is designated 3. A sensor 4 is located on the left section 3.

[0058] The control and display module is located in housing 1.

[0059] The sensor 5 can also be located on the right section of the strap 6 (see Fig. 2).

[0060] The emitter 7 of radiation and the receiver 9 of radiation reflected from human tissue are located in the sensor 4. The sensor may contain two emitters 7 and 8 (see Fig. 1).

[0061] The emitter 7 of radiation can be simply called the emitter.

[0062] The receiver 9 of radiation reflected from human tissue can simply be called a receiver.

[0063] The control and display module contains a power source 10 (see Fig. 4), a control and data processing unit 11, and a data display panel 12.

[0064] The housing 1 contains devices for fastening strap sections 13 and 14.

[0065] The emitter of radiation 7 and the receiver 9 of radiation reflected from human tissue, located in the sensor 4, are connected to the control and display module located in the housing 1, by means of wires 15. The sections of the strap are designed with the possibility of being attached to the housing and detached from the housing by means of devices for fastening the sections of the strap.

[0066] The strap fastening devices are designated by the following positions:

[0067] 13, 14 (see Fig. 1); 16, 17 (see Fig. 2); 18, 19 (see Fig. 4).

[0068] The strap section fastening device 13 contains an electrical connector 20 for connecting wires 15 and 26. Wires 15 are located in the strap section. Wires 26 are located in the housing. Wires 28 are located in the strap section. Wires 27 are located in the housing.

[0069] Strap section 29 is connected to housing 30 via strap fastening device 16. Strap fastening device 16 does not contain an electrical connector. Strap section 6 contains sensor 5 and is connected to housing 30 via strap fastening device 17.

[0070] The fastening device for the strap section 17 contains an electrical connector 21 for connecting wires 27 and 28.

[0071] The strap section 31 is connected to the housing 32 by means of a strap fastening device 22. The strap fastening device 22 contains an electrical connector 24. The electrical connector 22 is connected to wires 33.

[0072] The strap section 37 is connected to the housing 32 by means of a strap fastening device 23. The strap fastening device 23 contains an electrical connector 25. The electrical connector 25 is connected to wires 34 and 35. Wires 35 are located in the strap section 37 and are connected to the sensor 36.

[0073] The housing 32 contains devices for fastening strap sections 22 and 23, which contain electrical connectors 24 and 25 for connecting wires.

[0074] Thus, the control and display module, as well as the sensor, are attached to the hand via sections of the strap.

[0075] The claimed design of the device for non-invasive monitoring of glucose levels in human blood allows for the quick replacement of strap sections, including if one section is faulty.

[0076] Fig. 5 shows the device for fastening the strap section with an electrical connector for connecting the wires. The following are indicated in the figure:

[0077] 38 - a strap section connected to the housing 39 by means of a strap section fastening device 40; 41 - an electrical connector socket, for example, a USB socket. The electrical connector socket 41 is connected by means of wires 52 to the control and display module 53 located in the housing 39;

[0078] 42 - strap section loop;

[0079] 43 - bolt for connecting the loop of the strap section with the fastening device of the strap section 40;

[0080] 44 - bolt for connecting loop 45 of strap section with device for fastening strap section 40;

[0081] 46 - Electrical connector plug, such as a USB plug.

[0082] The loops 45 and 81 of the strap section, as well as the plug of the electrical connector 46 are located on the strap section;

[0083] 47 - wires, for example, made in the form of a flexible printed circuit board, connecting plug 46 with sensor 48;

[0084] 81 - loop of strap section.

[0085] The sensor contains emitters 49 and 50, as well as a radiation receiver 51.

[0086] To connect the strap sections to a person's hand, each section contains a locking element for connecting the strap sections to a person's hand. Fig. 1 shows locking elements 54, 55, and 56.

[0087] The lock element 54 is located on the strap section 3. The elements 55 and 56 (holes) are located on the strap section 2.

[0088] A device for non-invasive monitoring of glucose levels in human blood can be designed in such a way that, while the device is on the hand, the emitter is configured to emit radiation into the hand to the radial artery at the base of the thumb of the human hand, or to the radial artery of the wrist, or to the radial artery of the forearm, and the receiver is configured to receive reflected radiation from the hand, namely, from the radial artery at the base of the thumb of the human hand, or from the radial artery of the wrist, or from the radial artery of the forearm.

[0089] The control and display module may be referred to in literature as the "control module." The sensor, in turn, may be referred to as a mobile remote unit, or more accurately, a wrist-worn device sensor for noninvasive blood glucose monitoring.

[0090] Light, a radiation visible to the human eye, is used as radiation. Invisible radiation can also be used.

[0091] Definitions of terms are given in the source / 1 / .

[0092] Fig. 6 shows a prototype - a sensor at the end of a strap section, connected to the control and display module via wires.

[0093] In Fig. 6, the following positions are indicated:

[0094] 57 - sensor (sensor housing);

[0095] 58 - emitter;

[0096] 59 - emitter;

[0097] 60 - receiver;

[0098] 61 - a side separating the receiver from the emitters;

[0099] 62 - strap section;

[0100] 63 - wires connecting the sensor and the control and display module (in particular, the control and data processing unit) located in the housing;

[0101] 64 - body;

[0102] 65 - data display panel (e.g. touch screen);

[0103] 66 - device for fastening the strap section;

[0104] 67 - control and data processing unit.

[0105] In general, a sensor can be designed without a border. It can also be designed with a single emitter or with more than two emitters—for example, a sensor can be designed with three, four, five, six, and so on emitters.

[0106] Fig. 7 shows the claimed device for noninvasively monitoring human blood glucose levels. The sensor is located at the end of a strap section, connected to the control and display module via wires. The housing contains a strap section attachment device with an electrical connector for the wires.

[0107] In Fig. 7, the following positions are indicated:

[0108] 68 - sensor (sensor housing); 69 - emitter;

[0109] 70 - emitter;

[0110] 71 - receiver;

[0111] 72 - a side separating the receiver from the emitters;

[0112] 73 - strap section;

[0113] 74 - wires connecting the sensor and the control and display module (in particular, the control and data processing unit), located in the housing. The wires consist of two parts: wires located in the strap section (position 74) and wires located in the housing (position 75). These two parts of the wires are connected via a connector located in the strap section fastening device;

[0114] 75 - wires located in the housing;

[0115] 76 - body;

[0116] 77 - data display panel (e.g. touch screen);

[0117] 78 - control and data processing unit.

[0118] 79 - device for fastening the strap section;

[0119] 80 - connector.

[0120] The device works as follows.

[0121] The device is firmly secured to the arm using strap sections, for example, to the wrist of a person's left (or right) hand, so that the sensor is opposite the radial artery in that area of ​​the arm.

[0122] In general, while the device is on the hand, the emitter and receiver of the radiation are directed at the radial artery at the base of the thumb of the human hand, or at the radial artery of the wrist, or at the radial artery of the forearm.

[0123] To correctly orient the sensor, feel the arterial pulse, press the sensor against it, and then tighten the strap sections. In this case, the transmitter and receiver located in the sensor are aimed at the radial artery.

[0124] Next steps: The patient sits still for 3 minutes (or 5 minutes if they have been working intensively), with their arm relaxed and resting on a table or lap. Then, the patient turns on the device: they turn on the power and activate the control module by pressing buttons on the display's touchscreen. The control module then checks the correct positioning of the sensor (transmitter and receiver) relative to the radial artery. The check takes up to 3 minutes. If the sensor's position is incorrect, a message appears on the display prompting the sensor to be repositioned.

[0125] To re-install the sensor, the device is turned off. The strap sections are loosened, the sensor is repositioned over the radial artery, and then the strap sections are tightened, pressing the sensor firmly against the arm. The user sits still for 3 minutes, then turns on the device. The sensor installation process continues until a message appears on the display indicating the device is ready for use. Testing of the prototype device revealed that initial setup requires up to 3 attempts. Each attempt takes 6 minutes—this is the average time over 100 attempts performed by 10 testers. The device is then ready to measure blood sugar levels. Therefore, the first measurement takes up to 18 minutes (also the average time over 100 attempts).

[0126] Typically, people use their hands intensively throughout the day. This causes the device to shift from its original position, rotating on the wrist. A diabetic patient must measure their blood sugar levels multiple times a day—up to 10 or more. This requires resetting the sensor and adjusting the device for operation just as many times. This translates to up to three hours of daily measurement time. These data were obtained from experiments conducted during the development of the present invention. The main reason is the rotation of the device and strap relative to the wrist and artery.

[0127] If 10 measurements are taken evenly, for example, over 12 hours (720 min), then the time interval between measurements is 54 minutes.

[0128] The prototype has a drawback.

[0129] If, for example, a wire inside the strap breaks (at a bend) or a sensor (or its component) stops working, the prototype must be sent to the manufacturer for repair, which is time-consuming. Moreover, the repair time significantly exceeds the interval between blood glucose measurements. Replacement time can range from a few days to several months, significantly exceeding the interval between measurements.

[0130] The invention enables the rapid resolution of a malfunction in a device for non-invasive blood glucose monitoring caused by broken wires or a faulty sensor by replacing the strap section with a working strap section. Furthermore, the time required to replace the strap section does not exceed the interval between blood glucose measurements.

[0131] The time required to loosen bolts 43 and 44 (see Fig. 5) can range from 30 to 60 seconds. The time required to connect a new strap section with a functioning sensor and wires will take up to 60 seconds. Thus, according to the invention, the troubleshooting time for a faulty wire or sensor will be up to 2 minutes, which is 27 times shorter than the time interval between measurements. Depending on the design of the strap section fastening devices, the time required to replace a faulty section with a functioning one will not exceed 5 minutes. This is 10 times shorter than the time interval between measurements.

[0132] In practice, the implementation of the invention will ensure continuous monitoring of human blood glucose levels in the event of a malfunction in the wrist device for non-invasive monitoring of human blood glucose levels caused by a broken wire or a faulty sensor located in the strap section, and will eliminate the malfunction, due to prompt replacement with a strap section containing a working sensor and wires.

[0133] According to the invention, a strap section with a damaged wire or a broken sensor can be replaced with a new, working section at home. The replacement time is up to five minutes. Additionally, testing the device with the new strap section takes several dozen minutes.

[0134] Furthermore, the invention allows for the use of a device housing for noninvasive blood glucose monitoring with strap sections of varying lengths (made of different materials and colors). Specifically, the same device housing for noninvasive blood glucose monitoring can be used by an adult and a child. Alternatively, the same device housing for noninvasive blood glucose monitoring can be used by multiple people. Each person has their own strap section with a sensor.

[0135] The prototype solves this technical problem by adjusting a section of the strap to fit the other wrist. This creates a new kinking point. As many people use the prototype as they do, the strap section and its wires become kinked. This causes rapid wear and tear.

[0136] It also provides for quick replacement of strap sections of the device for non-invasive monitoring of glucose levels in human blood if an allergy to the material of the strap sections is detected in the person.

[0137] The prototype doesn't solve this problem. If an allergy to the strap section material is detected, a new noninvasive blood glucose monitoring device with a suitable strap must be purchased, or the device must be sent to the manufacturer for replacement of the strap sections. This is a time-consuming process.

[0138] It is preferable that, when implementing the invention, the strap sections are designed with the possibility of being rigidly connected to the body by means of strap section fastening devices.

[0139] It is preferable that at least one device for fastening the strap sections is designed so as to prevent bending loads on the electrical connector - without allowing bending loads on the electrical connector.

[0140] Preferably, the strap sections are designed to prevent rotational movement of the secured strap section within the strap section fastening device. For the design shown in Fig. 5, this is done without allowing rotation relative to the longitudinal axes of bolts 43 and 44.

[0141] Preferably, at least one strap section fastening device should be designed to prevent bending, including bending, of the strap or bracelet section fastening device. Preferably, at least one strap or bracelet section fastening device should not allow bending of the electrical connector for connecting wires located in the strap or bracelet section fastening device.

[0142] Rigidity is defined as the ability of a system (in our case, the strap section fastening devices) to resist external loads with minimal deformation. Or, alternatively, the ability of a system to resist external loads with acceptable deformations without affecting the system's functionality. This includes the ability to resist the strap or bracelet section fastening devices, electrical connectors, and wiring.

[0143] It is preferable that at least one device for fastening the strap or bracelet section and the housing be designed in such a way as to prevent bending of the electrical wires where they are connected to the socket and plug.

[0144] In other words, one device for fastening a section of the strap or bracelet to the housing, or both devices for fastening sections of the strap or bracelet to the housing, were designed to prevent bending of the electrical wires where they are connected to the socket and plug.

[0145] Or, at least one device for fastening the strap section must be designed to prevent bending of the electrical wires where they are connected to the socket and plug.

[0146] A bend is when, after the bending load is removed, the wires remain bent (or the fastening device of a strap or bracelet section remains bent).

[0147] Preferably, at least one strap or bracelet section fastening device is designed to prevent relative movement of the plug in the socket after the strap or bracelet section is secured in the strap or bracelet section fastening device. In other words, it prevents relative movement of the plug in the socket after the strap or bracelet section is secured in the strap or bracelet section fastening device. Preferably, at least one strap or bracelet section fastening device is designed to prevent its movement relative to the housing.

[0148] In other words, the device for fastening the strap or bracelet section is designed to prevent its movement relative to the case.

[0149] This ensures the durability of the strap or bracelet section fastening devices, electrical connectors, and wires. It also allows for quick replacement of strap or bracelet sections with other strap sections featuring reliable strap or bracelet section fastening devices.

[0150] Moreover, the time for replacing a section of the strap or bracelet does not exceed the time interval between blood glucose measurements.

[0151] The invention allows a strap or bracelet section with a damaged wire or broken sensor to be replaced with a new, working section at home. Replacement time is up to 5 minutes. Additionally, testing the device with the new strap section takes up to 20 minutes.

[0152] It follows from the above that the objective of the invention is achieved. It ensures virtually uninterrupted blood glucose monitoring in the event of a malfunction in a wrist-worn non-invasive blood glucose monitoring device caused by broken wires or a sensor located in a section (or on a section) of the strap or bracelet. This is achieved by promptly replacing the faulty section with a strap or bracelet section containing a functioning sensor and wires.

[0153] The technical results of the invention are also achieved.

[0154] A malfunction in a noninvasive blood glucose monitoring device caused by broken wires or a faulty sensor can be quickly repaired by replacing the strap or bracelet section with a working one. The replacement time for the strap or bracelet section does not exceed the interval between blood glucose measurements. The noninvasive blood glucose monitoring device can be used with strap or bracelet sections of varying lengths (made from different materials and colors).

[0155] Provides prompt replacement of strap or bracelet sections of a device for non-invasive monitoring of glucose levels in human blood if an allergy to the material of the strap or bracelet sections is detected.

[0156] Literature

[0157] 1. Tikhonenko D.O., Tikhonenko O.O., Lobko V.P. NEW DEVELOPMENTS IN THE FIELD OF WRIST-WEARING DEVICES FOR NON-INVASIVE MONITORING OF GLUCOSE CONTENT IN HUMAN BLOOD, AS WELL AS FOR MONITORING OTHER HUMAN HEALTH PARAMETERS. TERMS AND DEFINITIONS. Higher school: scientific research. Proceedings of the Interuniversity International Congress (Moscow, October 13, 2023). Volume 1. - Moscow: Infinity Publishing House, 2023, 61-98 pp., BBK 65, ISBN 978-5-905695-53-7, DOI 10.34660 / INF.2023.68.11.381 https: / / studylib.net / doc / 27163933 / kongress-13-oktyabrya-2023-tom-1)

Claims

CLAUSES OF THE INVENTION 1. A wrist device for non-invasive monitoring of glucose levels in human blood, comprising a housing, a two-section strap or bracelet for fastening the wrist device on a person's hand, a control and display module located in the housing; a sensor located on one of the sections of the strap or bracelet; a radiation emitter and a receiver of radiation reflected from human tissue, located in the sensor; and the housing contains devices for fastening the sections of the strap or bracelet; wherein the radiation emitter and the receiver of radiation reflected from human tissue, located in the sensor, are connected to the control and display module located in the housing by means of wires, characterized in that the sections of the strap or bracelet are designed with the possibility of being attached to the housing and detached from the housing by means of devices for fastening the sections of the strap, wherein at least one device for fastening a section of the strap or bracelet contains an electrical connector for connecting the wires.

2. A wrist device according to claim 1, characterized in that part of the wires is located inside a section of the strap or bracelet or is located on the surface of a section of the strap or bracelet.

3. A wrist device according to paragraphs 1 and 2, characterized in that part of the wires is located on the inner surface of a section of the strap or bracelet.

4. A wrist device according to paragraphs 1 and 2, characterized in that part of the wires is located on the outer surface of the strap or bracelet section.

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