KR20200120583A - Continuous biological signal measuring method, reducing discomfort caused by wearing equipment - Google Patents

Abstract

A method of continuously measuring a blood pressure using a continuous blood pressure measuring device according to one embodiment of the present invention includes: fixing the measurement unit to a part of the body of the subject in a state in which an air pocket provided in a measurement unit is in close contact with a part of the body of the subject; measuring the blood pressure of the subject in advance while increasing or decreasing the internal pressure of the air pocket using a pressure sensor; analyzing a measured blood pressure waveform of the subject to calculate an optimum value of the internal pressure of the air pocket; setting the internal pressure of the air pocket to the optimum value; and measuring the blood pressure of the subject in a continuous waveform, wherein the first air pocket is arranged to surround a part of the body of the subject over the entire interior of the band in a plurality of separate forms, the second air pocket supplies the gas contained therein to the first air pocket, receives the gas from the first air pocket and adjusts the pressure inside the first air pocket, the pressure sensor extracts a pulse wave by continuously measuring the pressure change inside the first air pocket, and obtains the waveform of the subject′s blood pressure by using the extracted waveform, and the measurement unit measures the blood pressure by specifying an air pocket in which the blood pressure of the subject is measured among the separated first air pockets.

Description

A method of continuously measuring blood pressure while reducing discomfort caused by the subject's wearing a measuring device {CONTINUOUS BIOLOGICAL SIGNAL MEASURING METHOD, REDUCING DISCOMFORT CAUSED BY WEARING EQUIPMENT}

The present invention relates to a device for continuously measuring blood pressure by calculating an optimal pressure applied to a user's body, and more particularly, to a method for continuously measuring blood pressure with simple wearing while minimizing the user's discomfort. .

In medical technology, blood pressure management of patients is a very important technology. Identifying whether hypertension or hypotension is essential in managing a patient's condition, and for this purpose, a method of measuring blood pressure has been developed in various ways.

The most basic blood pressure measurement method is to put a cuff around the arm of the person to be measured, and apply pressure to the arm with the cuff to apply high pressure to prevent blood from flowing. Then, while gradually reducing the pressure the cuff exerts on the arm, the korotkoff sound is sensed, and the moment when the korotkoff sound begins to be heard is the systolic blood pressure, and the diastolic blood pressure is the point at which the korotkoff sound begins to stop being heard This is how to measure.

The oscillometric method is the same as the Korotkoff sound method in that it uses a cuff wrapped around the upper arm of the subject, but uses a statistical and empirical regression equation to measure the vibration (oscillometric waveform) caused by the cuff pressure rather than sound. It is a method of measuring systolic and diastolic blood pressure.

Another method of measuring the subject's blood pressure is a method of measuring blood pressure by measuring a pulse wave of a finger. In this method, when the measuring device is inserted into the finger of the subject, the measuring device extracts the pulse wave from the capillary of the finger using an infrared light source sensor and a light-receiving sensor in the capillary of the finger tip. The blood pressure of the subject is measured using the extracted pulse wave of the subject.

The method of measuring blood pressure through the Korotkoff sound after applying pressure to the arm using the cuff first has high accuracy, but it is inconvenient that a person with expert knowledge must measure it directly, and it is only a temporary momentary blood pressure measurement. There is a disadvantage that it is not possible to know how the blood pressure changes in real time, and the subject may feel uncomfortable by compressing the subject’s arm.

The oscillometric method allows the subject to measure blood pressure on its own without the help of others through an automated blood pressure estimation algorithm, but, like the Korotkoff sound, only temporary blood pressure measurement is possible. In addition, since the upper arm is strongly pressed with the cuff, pain may be caused during measurement, which may cause discomfort.

The method of measuring blood pressure by measuring a pulse wave from a finger uses a pulse wave, so not only temporary blood pressure can be obtained, but continuous blood pressure measurement is possible, but the subject feels uncomfortable because it is fixed to the finger and limits the subject's activity. It can be felt, and measuring the pulse wave using an infrared sensor is difficult to measure because the noise is severe when the subject's movement occurs, and the calculation of the process of calculating the blood pressure by analyzing the pulse wave is complicated, and expensive specialized measuring equipment has to be used. There is a disadvantage that it can only be measured in a specific place because the equipment is large enough to be portable.

Therefore, there is a need for a technology capable of automatically measuring blood pressure continuously while minimizing the discomfort of the subject.

(1) Japanese Unexamined Patent Application Publication No. Hei 11-244247 (2) Unexamined Patent Publication No. 10-2018-0057907

Accordingly, it is an object of the present invention to provide a method of continuously measuring blood pressure by calculating an optimal pressure applied to the user's body that allows the user to continuously measure blood pressure regardless of the movement of the subject while minimizing the discomfort of the subject. It is in providing.

In a method of continuously measuring blood pressure using a continuous blood pressure measuring device according to an embodiment of the present invention for solving the above problem, the air pocket provided in the measuring unit is in close contact with a part of the body of the subject. Fixing the measurement unit to a part of the body of the subject; Pre-measuring the blood pressure of the subject while increasing or decreasing the internal pressure of the air pocket using a pressure sensor; Analyzing the measured blood pressure waveform of the subject to derive an optimum value of the internal pressure of the air pocket; Setting the internal pressure of the air pocket to the optimum value; And measuring the blood pressure of the subject in a continuous waveform; wherein the first air pocket is arranged in a form surrounding a part of the body of the subject in a plurality of separate shapes over the entire interior of the band unit, The second air pocket supplies gas contained therein to the first air pocket, receives gas from the first air pocket, and adjusts the pressure inside the first air pocket, and the pressure sensor The pulse wave is extracted by continuously measuring the pressure change inside the pocket, and the waveform of the blood pressure of the subject is obtained using the extracted waveform, and the measurement unit selects an air pocket on which the blood pressure of the subject is measured among a plurality of separated first air pockets. Specific blood pressure can be measured.

In addition, analyzing the measured waveform; may further include.

Also, the body part may be a wrist.

In addition, the pre-measurement step may include checking an internal pressure value of the air pocket; Filling the air pocket with gas when the internal pressure value is less than or equal to a specific value; And pre-measuring the blood pressure waveform of the subject while increasing the pressure applied by the air pocket to the body part of the subject by increasing the internal pressure of the air pocket.

In addition, the specific value may be atmospheric pressure.

In addition, in the gas filling step, when the internal pressure value is below atmospheric pressure, the air pocket is opened to adjust the internal pressure to the atmospheric pressure level.

Further, the method may further include transmitting the measured blood pressure waveform data to an external system.

According to the present invention, it is possible to accurately measure the subject while minimizing the discomfort caused by the subject's wearing the measuring device.

In addition, unlike the conventional blood pressure measuring method, it is possible to provide a continuous blood pressure measuring method by measuring blood pressure by applying only moderate pressure to the user's wrist to a degree that does not cause discomfort.

In addition, it is possible to measure the blood pressure by calculating the optimal pressure applied to the user's body to measure the blood pressure of the subject and obtaining the best pulse wave by a simple method.

Meanwhile, the effects of the present invention are not limited to the above-mentioned effects, and various effects may be included within a range that is apparent to a person skilled in the art from the contents to be described below.

1 is a cross-sectional view of a wrist of a subject wearing a continuous blood pressure measuring device according to an embodiment of the present invention.
2 is a block diagram of a measuring unit of an apparatus for continuously measuring blood pressure according to an embodiment of the present invention.
3 is an example of a pulse wave measured by the apparatus for continuously measuring blood pressure according to an embodiment of the present invention.
4 is a view showing that a subject wears a continuous blood pressure measuring device according to an embodiment of the present invention.
5 is a flowchart of a method for continuously measuring blood pressure according to an embodiment of the present invention.

Hereinafter, a'continuous blood pressure measuring apparatus and method' according to the present invention will be described in detail with reference to the accompanying drawings. The described embodiments are provided so that those skilled in the art can easily understand the technical idea of the present invention, and the present invention is not limited thereto. In addition, matters expressed in the accompanying drawings are schematic drawings for easy explanation of embodiments of the present invention and may be different from the actual implementation form.

Meanwhile, each component expressed below is only an example for implementing the present invention. Accordingly, in other implementations of the present invention, other components may be used without departing from the spirit and scope of the present invention.

In addition, each component may be implemented with purely hardware or software, but may be implemented with a combination of various hardware and software components that perform the same function. In addition, two or more components may be implemented together by one piece of hardware or software.

In addition, the expression'including' certain elements is an expression of'open type' and simply refers to the existence of the corresponding elements, and should not be understood as excluding additional elements.

In addition, a part of the body of the subject of the present invention may include the wrist of the subject.

1 is a cross-sectional view of a wrist of a subject wearing a continuous blood pressure measuring device according to an embodiment of the present invention.

Referring to FIG. 1, an apparatus for continuously measuring blood pressure according to an embodiment of the present invention may include a band unit 101 and a measurement unit 102.

The band unit 101 may fix a continuous blood pressure measuring device to a part of the body of the subject. The band unit 101 may completely surround a part of the body of the subject in a ring shape to fix the continuous blood pressure measurement device. The band part 101 may wrap a part of the body part of the subject in an open shape to fix the continuous blood pressure measuring device. The band part 101 may have a shape in which the length is adjustable. The band unit 101 adjusts the length to position the band unit 101 outside of the body part of the subject, and then adjusts the length of the band unit 101 to adjust the length of the body part of the subject to measure the continuous blood pressure. Can be fixed. When the band unit 101 is positioned around a part of the body of the subject, the continuous blood pressure measuring device may be automatically fixed. The band unit 101 may recognize a part of the body of the subject and automatically adjust the length to fix the continuous blood pressure measurement device to a part of the body of the subject. The band unit 101 may be made of a flexible material so that the continuous blood pressure measuring device may be fixed in close contact with a part of the body of the subject. The length of the band part 101 may be adjusted by increasing or decreasing the length of the measuring part 102. The band unit 101 senses the pressure applied to a part of the user's body and stops adjusting the length when a force greater than a certain pressure is applied, and the continuous blood pressure measuring device is fixed by minimizing discomfort to the body part of the subject. can do. The body part may include all human body parts such as arms, wrists, fingers, legs, ankles, and abdomen. In this specification, a wrist is used as an example. However, the embodiment of the present invention is not limited to the wrist.

The measurement unit 102 may be fixed, attached, or adhered to a part of the body of the subject by the band unit 101. The measurement unit 102 may measure the blood pressure of the subject in contact with a part of the body of the subject. The measurement unit 102 is fixed to a part of the body of the subject by the band unit 101 to minimize noise generation during daily movements, thereby stably measuring blood pressure. The measurement unit 102 may be positioned in contact or in close contact with a place where blood vessels are located in the body part of the subject. The measurement unit 102 may measure the blood pressure of the subject in the blood vessel of the subject. The measuring unit 102 may measure blood pressure by measuring a pulse wave of the subject. The measurement unit 102 may adjust the length of the band unit 101. The measurement unit 102 reduces the length of the band unit 101 and stops adjusting the length of the band unit 101 before excessive pressure is applied by sensing the pressure applied by the band unit 101 to a part of the body of the subject. And the length of the band portion 101 can be adjusted. The measurement unit 102 may include an air pocket. The measurement unit 102 may detect a pressure change of the air pocket to detect the blood pressure of the subject. The measuring unit 102 may measure a blood pressure, a pulse wave, and a blood pressure of the subject by contacting or in close contact with the location of the blood vessel of the subject and sensing a pressure change in the air pocket due to the pulse wave of the blood vessel. The measurement unit 102 may be worn in contact with or in close contact with the radial artery of the subject.

2 is a block diagram of a measuring unit of an apparatus for continuously measuring blood pressure according to an embodiment of the present invention.

2, the measurement unit 102 includes an air pocket, a connection unit 203, a pressure sensor 204, a pressure control unit 205, an analysis unit 206, a communication unit 207, and a correction unit (not shown). ) May include at least one or more of.

The air pocket may protrude outward from the measurement unit 102. The air pocket may contact a part of the body of the subject. The air pocket may contain gas therein. The air pocket may have a flexible amount of gas contained therein. The air pocket may change an internal pressure due to a change in the amount of gas contained therein. The force applied from the outside may change the volume of the air pocket, and the internal pressure may change due to the change in volume. The air pocket may be made of an elastic material. The volume of the air pocket may increase or the internal pressure may increase as the amount of the injected gas increases, or the volume of the air pocket may increase and the internal pressure may increase. As the volume of the air pocket increases or the internal pressure increases, the pressure applied to the body part of the subject may increase. The air pocket may be made of various materials such as vinyl, silicone, PDMS, plastic, etc., but is not limited thereto, and may include all elastic materials. The air pocket may be worn in contact with or in close contact with a portion where the radial artery of the subject is located. The air pocket may have a length of 0 to 4 cm in a direction perpendicular to the blood circulation of the radial artery. The air pocket may have a length of 2 cm in a direction perpendicular to the blood circulation of the radial artery. The air pocket may be included in plurality. The air pocket may be divided into a first air pocket 201 and a second air pocket 202 and included. The air pocket may have a form of an air pocket including a gas therein.

The first air pocket 201 may protrude outward from the measurement unit 102. The first air pocket 201 may contact a part of the body of the subject. The first air pocket 201 may contain gas therein. The amount of gas contained therein may be flexible in the first air pocket 201. The internal pressure of the first air pocket 201 may change due to a change in the amount of gas contained therein. A force applied from the outside may change the volume of the first air pocket 201 and the internal pressure may change due to the change in volume. The first air pocket 201 may be made of an elastic material. The volume of the first air pocket 201 may increase as the amount of the injected gas increases, or the internal pressure may increase, or the volume of the first air pocket 201 may increase and the internal pressure may increase. As the volume of the first air pocket 201 increases or the internal pressure of the first air pocket 201 increases, the pressure applied to a part of the body of the subject may increase. The first air pocket 201 may be made of various materials such as vinyl, silicone, PDMS, and plastic, but is not limited thereto and may include all elastic materials. The first air pocket 201 may be worn in contact with or in close contact with a portion where the radial artery of the subject is located. The first air pocket 201 may have a length of 0 to 4 cm in a direction perpendicular to the blood circulation of the radial artery. The first air pocket 201 may have a length of 2 cm in a direction perpendicular to the blood circulation of the radial artery.

The first air pocket 201 may be arranged to surround a part of the body of the subject over the entire interior of the band part 101 in a plurality of separate forms. The blood pressure may be measured by specifying an air pocket in which the blood pressure of the subject is measured among the plurality of first air pockets 201.

The connection part 203 may connect the first air pocket 201 and the second air pocket 202. The connection part 203 may enable the movement of the gas between the first air pocket 201 and the second air pocket 202. The connection part 203 connects the first air pocket 201 and the second air pocket 202 so that the movement of the gas is impossible between the first air pocket 201 and the second air pocket 202. They can be individually shielded. The connection part 203 may be opened to cause gas movement between the first air pocket 201 and the second air pocket 202, and is shielded to prevent the first air pocket 201 and the second air pocket. The gas flow of the 202 may be blocked, and the pressures of the first air pocket 201 and the second air pocket 202 may be kept constant if there is no external force. The connection part 203 may connect the air pocket to the second air pocket 202 to enable gas movement when an air pocket in which the blood pressure of the subject is measured among the plurality of first air pockets 201 is specified. .

The second air pocket 202 may include gas therein. The second air pocket 202 may have a fluid amount of gas contained therein. The second air pocket 202 may change an internal pressure due to a change in the amount of gas contained therein. A force applied from the outside may change the volume of the second air pocket 202 and the internal pressure may change due to the change in volume. The second air pocket 202 may be formed of an elastic material. The second air pocket 202 may be made of various materials such as vinyl, silicone, PDMS, plastic, etc., but is not limited thereto, and may include all elastic materials. The second air pocket 202 may increase the internal pressure of the first air pocket 201 by sending gas to the first air pocket 201. The second air pocket 202 may receive gas from the first air pocket 201 to lower the pressure of the first air pocket 201.

The air pocket may be included as a single air pocket capable of simultaneously performing the functions of the first air pocket 201 and the second air pocket 202.

The pressure sensor 204 may measure the internal pressure of the first air pocket 201. The pressure sensor 204 may continuously measure a change in the internal pressure of the first air pocket 201. The pressure sensor 204 may continuously measure the change in the internal pressure of the first air pocket 201 and display it as a waveform. The pressure sensor 204 may extract a pulse wave by continuously measuring a change in internal pressure of the first air pocket 201. The pressure sensor 204 may obtain a waveform of the blood pressure of the subject by using the extracted pulse wave, and the pressure sensor 204 may be located inside the first air pocket 201. The pressure sensor 204 may generate a change in pressure as an electrical signal. The pressure sensor 204 may continuously measure an internal pressure that changes by receiving an external force by the pulse wave of the blood vessel of the subject when the first air pocket 201 is in contact with or in close contact with a part of the body of the subject. . The pressure sensor 204 may derive the blood pressure of the subject as a waveform by using the measured continuous change in the internal pressure, and calculate the blood pressure value of the subject. The pressure sensor 204 may calculate a high point of the blood pressure waveform of the subject as a maximum blood pressure and a low point as a lowest blood pressure. The pressure sensor 204 determines the relationship between the pressure applied by the first air pocket 201 to the body part of the subject and the pulse wave generated by the pulse wave of the subject applying an external force to the first air pocket 201. The blood pressure value of the subject can be calculated using.

The pressure control unit 205 may adjust the pressure of the first air pocket 201. The pressure control part 205 may adjust the pressure by moving gas between the first air pocket 201 and the second air pocket 202 through the connection part 203. The pressure control unit 205 may increase or decrease the internal pressure of the first air pocket 202 by moving gas. The pressure control unit 205 analyzes a pulse wave or a blood pressure wave of the subject obtained by measuring the internal pressure of the first air pocket 201 measured by the pressure sensor 204, and the first air pocket 201 The pressure may be adjusted so that the internal pressure of is a specific pressure value or the amount of gas injected into the first air pocket 201 corresponds to a specific amount. The pressure control unit 205 blocks gas movement between the first air pocket 201 and the second air pocket 202 when the internal pressure of the first air pocket 201 reaches a specific value and You can have a pressure reading. When the amount of gas injected into the first air pocket 201 reaches a target amount, the pressure control unit 205 is formed between the first air pocket 201 and the second air pocket 202. Gas movement can be blocked. The specific pressure value or the target amount of gas may be a pressure or gas amount at a point where the blood pressure, pulse wave, or blood pressure wave of the subject has a maximum magnitude. The specific pressure value or the target amount of gas may be a pressure or gas amount at a point where a blood pressure, a pulse wave, or a blood pressure wave is measured without disturbing the blood circulation of the subject.

The analysis unit 206 may analyze pressure data measured by the pressure sensor. The analysis unit 206 may generate blood pressure data by analyzing the pressure data. The analysis unit 206 may use the blood pressure data to find out the diastolic and systolic blood pressure of the subject. The analysis unit 206 may calculate the diastolic and systolic blood pressure of the subject as numerical values. The analysis unit 206 may analyze the pressure data to generate a blood pressure waveform of the subject. When a change in blood pressure, pulse wave, or blood pressure wave measured by the pressure sensor 204 occurs, the analysis unit 206 may generate vibration that the subject can feel. The change may include a decrease in the size of the blood pressure, pulse wave, or blood pressure wave, and a case in which the blood pressure, pulse wave, or blood pressure wave exhibits an abnormal shape.

The communication unit 207 may transmit a result measured by the pressure sensor 204 to an external system. The communication unit 207 may transmit blood pressure, pulse wave, or blood pressure wave information of the subject measured by the pressure sensor 204 to an external system. The communication unit 207 may transmit blood pressure, blood pressure data, and data of the highest and lowest blood pressure values analyzed by the pressure sensor 204 to an external system. The external system may include a display system capable of displaying the data, a storage system capable of storing the data, and an analysis system capable of in-depth analysis of the data.

When a change in blood pressure, pulse wave, or blood pressure wave measured by the pressure sensor 204 occurs, the communication unit 207 may transmit a signal indicating the occurrence of the change to an external system. The change may include a decrease in the size of the blood pressure, pulse wave, or blood pressure wave, and a case in which the blood pressure, pulse wave, or blood pressure wave exhibits an abnormal shape. The external system may include an emergency system for notifying the medical staff of the emergency situation when an emergency situation occurs in the state of the subject. The communication unit 207 may allow the continuous blood pressure measuring device to transmit blood pressure information of the subject through wireless communication without a wire connection. The communication method used by the communication unit 207 may include a communication method such as Bluetooth, infrared, and LTE, but is not limited thereto and may include all types of communication methods capable of transmitting data.

The correction unit may correct the internal pressure of the air pocket. The correction unit may fill or discharge gas into the air pocket according to an internal pressure when the air pocket is not measured. The correction unit may check the internal pressure value of the air pocket. The correction unit may fill the air pocket with gas when the internal pressure value of the air pocket is less than or equal to a specific value. The specific value may include atmospheric pressure. When the internal pressure of the air pocket is less than atmospheric pressure, the correction unit may open the sensing pocket and then shield it. Through the opening and shielding, the internal pressure of the air pocket can be adjusted to the atmospheric pressure. The correction unit may adjust the internal pressure of the air pocket according to a specific value. The correction unit may adjust the internal pressure of the air pocket by filling or discharging gas in the air pocket.

3 is an example of a pulse wave measured by the apparatus for continuously measuring blood pressure according to an embodiment of the present invention.

Referring to FIG. 3, in a continuous blood pressure measurement apparatus according to an embodiment of the present invention, the pressure control unit 205 is in a state in which the first air pocket 201 is in contact with or in close contact with the radial artery of the subject. The internal pressure of the air pocket 201 can be increased. In this case, as the internal pressure of the first air pocket 201 increases, the blood pressure, internal pressure, pulse wave, or blood pressure wave of the subject measured by the first air pocket 201 may change. The blood pressure, internal pressure, pulse wave, or blood pressure wave of the subject increases in size at first, and then decreases when the pressure exerted by the first air pocket 201 to the subject's body increases and begins to interfere with blood circulation. Can start. The pressure control unit 205 may determine the pressure or gas amount when the measured blood pressure or the like corresponds to the highest point 301 as an optimal pressure or an optimal gas amount. The pressure cabinet 205 may adjust and fix the pressure or gas amount of the first air pocket to the optimum pressure or the optimum gas amount. The optimum pressure or optimum gas amount may be the pressure of the highest point 301 or 80% of the gas amount.

4 is a view showing that a subject wears a continuous blood pressure measuring device according to an embodiment of the present invention.

Referring to FIG. 4, the apparatus for continuously measuring blood pressure according to an embodiment of the present invention may be worn on a part of the body of a subject. In the continuous blood pressure measuring device, the measuring unit 102 measures blood pressure by being in close contact with or in contact with a part of the body of the subject, and the band unit 101 fixes the measurement unit 102 to a part of the body of the subject. I can. The length of the band part 101 may be adjusted by the measuring part 102. The length of the band part 101 may be adjusted by itself. The subject may position the measurement unit 102 at a portion to measure blood pressure. The continuous blood pressure measuring device located in the blood pressure measuring part is fixed to the body of the subject by adjusting the length of the band part 101, and the measuring part 102 adjusts the internal pressure of the first air pocket 201. Afterwards, the blood pressure of the subject can be continuously measured.

5 is a flowchart of a method for continuously measuring blood pressure according to an embodiment of the present invention.

Referring to FIG. 5, in a method for continuously measuring blood pressure according to an embodiment of the present invention, the step of fixing the measurement unit to the body of the subject by adjusting the length of the band unit in a state in which the first air pocket is in close contact with the body of the subject It may include (S501).

In step S501, the band unit 101 may fix a continuous blood pressure measuring device to a part of the body of the subject. The band unit 101 may completely surround a part of the body of the subject in a ring shape to fix the continuous blood pressure measurement device. The band part 101 may wrap a part of the body part of the subject in an open shape to fix the continuous blood pressure measuring device. The band part 101 may have a shape in which the length is adjustable. The band unit 101 adjusts the length to position the band unit 101 outside of the body part of the subject, and then adjusts the length of the band unit 101 to adjust the length of the body part of the subject to measure the continuous blood pressure. Can be fixed. When the band unit 101 is positioned around a part of the body of the subject, the continuous blood pressure measuring device may be automatically fixed. The band unit 101 may recognize a part of the body of the subject and automatically adjust the length to fix the continuous blood pressure measurement device to a part of the body of the subject. The band unit 101 may be made of a flexible material so that the continuous blood pressure measuring device may be fixed in close contact with a part of the body of the subject. The length of the band part 101 may be adjusted by increasing or decreasing the length of the measuring part 102. The band unit 101 senses the pressure applied to a part of the user's body and stops adjusting the length when a force greater than a certain pressure is applied, and the continuous blood pressure measuring device is fixed by minimizing discomfort to the body part of the subject. can do. The body part may include all human body parts such as arms, wrists, fingers, legs, ankles, and abdomen. In this specification, a wrist is used as an example. However, the embodiment of the present invention is not limited to the wrist.

In the continuous blood pressure measurement method according to an embodiment of the present invention, the step of measuring the blood pressure of the subject by moving gas between the second air pocket and the first air pocket to increase the internal pressure of the first air pocket (S502) It may include.

In step S502, the pressure sensor 204 may measure the internal pressure of the first air pocket 201. The pressure sensor 204 may continuously measure a change in the internal pressure of the first air pocket 201. The pressure sensor 204 may continuously measure the change in the internal pressure of the first air pocket 201 and display it as a waveform. The pressure sensor 204 may extract a pulse wave by continuously measuring a change in internal pressure of the first air pocket 201. The pressure sensor 204 may obtain a waveform of the blood pressure of the subject by using the extracted pulse wave, and the pressure sensor 204 may be located inside the first air pocket 201. The pressure sensor 204 may generate a change in pressure as an electrical signal. The pressure sensor 204 may continuously measure an internal pressure that changes by receiving an external force by the pulse wave of the blood vessel of the subject when the first air pocket 201 is in contact with or in close contact with a part of the body of the subject. . The pressure sensor 204 may derive the blood pressure of the subject as a waveform by using the measured continuous change in the internal pressure, and calculate the blood pressure value of the subject. The pressure sensor 204 may calculate a high point of the blood pressure waveform of the subject as a maximum blood pressure and a low point as a lowest blood pressure. The pressure sensor 204 determines the relationship between the pressure applied by the first air pocket 201 to the body part of the subject and the pulse wave generated by the pulse wave of the subject applying an external force to the first air pocket 201. The blood pressure value of the subject can be calculated using.

S502 Checking the internal pressure value of the air pocket, filling the air pocket with gas when the internal pressure value is less than a specific value, and increasing the internal pressure of the air pocket so that the air pocket It may include the step of measuring the blood pressure waveform of the subject in advance while increasing the pressure applied to the part.

In step S502, the pressure control unit 205 may adjust the pressure of the first air pocket 201. The pressure control part 205 may adjust the pressure by moving gas between the first air pocket 201 and the second air pocket 202 through the connection part 203. The pressure control unit 205 may increase or decrease the internal pressure of the first air pocket 202 by moving gas. The pressure control unit 205 may move the gas to increase or decrease the internal pressure of the first air pocket 202, while causing the pressure sensor 204 to measure the blood pressure of the subject.

The method for measuring blood pressure continuously according to an embodiment of the present invention may include analyzing the measured blood pressure waveform of the subject to derive an optimum value of the internal pressure of the first pocket (S503).

In step S503, the pressure control unit 205 may increase the internal pressure of the first air pocket 201 while the first air pocket 201 is in contact with or in close contact with the radial artery of the subject. In this case, as the internal pressure of the first air pocket 201 increases, the blood pressure, internal pressure, pulse wave, or blood pressure wave of the subject measured by the first air pocket 201 may change. The blood pressure, internal pressure, pulse wave, or blood pressure wave of the subject increases in size at first, and then decreases when the pressure exerted by the first air pocket 201 to the subject's body increases and begins to interfere with blood circulation. Can start. The pressure control unit 205 may determine the pressure or gas amount when the measured blood pressure or the like corresponds to the highest point 301 as an optimal pressure or an optimal gas amount. The pressure cabinet 205 may adjust and fix the pressure or gas amount of the first air pocket to the optimum pressure or the optimum gas amount. The optimum pressure or optimum gas amount may be the pressure of the highest point 301 or 80% of the gas amount.

The method for measuring blood pressure continuously according to an embodiment of the present invention may include setting the internal pressure of the first air pocket to the optimum value (S504).

In step S504, the pressure control unit 205 analyzes the pulse wave or blood pressure wave of the subject obtained by measuring the internal pressure of the first air pocket 201 measured by the pressure sensor 204 to determine the first air. The pressure may be adjusted such that the internal pressure of the pocket 201 has a specific pressure value or the amount of gas injected into the first air pocket 201 corresponds to a specific amount. The pressure control unit 205 blocks gas movement between the first air pocket 201 and the second air pocket 202 when the internal pressure of the first air pocket 201 reaches a specific value and You can have a pressure reading. When the amount of gas injected into the first air pocket 201 reaches a target amount, the pressure control unit 205 is formed between the first air pocket 201 and the second air pocket 202. Gas movement can be blocked. The specific pressure value or the target amount of gas may be a pressure or gas amount at a point where the pulse wave or blood pressure wave of the subject has a maximum magnitude. The specific pressure value or the target amount of gas may be a pressure or gas amount at a point where a pulse wave or a blood pressure wave is measured without disturbing the blood circulation of the subject.

A method of measuring a blood pressure continuously according to an embodiment of the present invention may include measuring the blood pressure of the subject as a continuous waveform (S505).

In step S505, the pressure sensor 204 may measure the internal pressure of the first air pocket 201. The pressure sensor 204 may continuously measure a change in the internal pressure of the first air pocket 201. The pressure sensor 204 may continuously measure the change in the internal pressure of the first air pocket 201 and display it as a waveform. The pressure sensor 204 may extract a pulse wave by continuously measuring a change in internal pressure of the first air pocket 201. The pressure sensor 204 may obtain a waveform of the blood pressure of the subject by using the extracted pulse wave, and the pressure sensor 204 may be located inside the first air pocket 201. The pressure sensor 204 may generate a change in pressure as an electrical signal. The pressure sensor 204 may continuously measure an internal pressure that changes by receiving an external force by the pulse wave of the blood vessel of the subject when the first air pocket 201 is in contact with or in close contact with a part of the body of the subject. . The pressure sensor 204 may derive the blood pressure of the subject as a waveform by using the measured continuous change in the internal pressure, and calculate the blood pressure value of the subject. The pressure sensor 204 may calculate a high point of the blood pressure waveform of the subject as a maximum blood pressure and a low point as a lowest blood pressure. The pressure sensor 204 determines the relationship between the pressure applied by the first air pocket 201 to the body part of the subject and the pulse wave generated by the pulse wave of the subject applying an external force to the first air pocket 201. The blood pressure value of the subject can be calculated using.

In step S505, the analysis unit 206 may analyze the pressure data measured by the pressure sensor. The analysis unit 206 may generate blood pressure data by analyzing the pressure data. The analysis unit 206 may use the blood pressure data to find out the diastolic and systolic blood pressure of the subject. The analysis unit 206 may calculate the diastolic and systolic blood pressure of the subject as numerical values. The analysis unit 206 may analyze the pressure data to generate a blood pressure waveform of the subject. When a change in blood pressure, pulse wave, or blood pressure wave measured by the pressure sensor 204 occurs, the analysis unit 206 may generate vibration that the subject can feel. The change may include a decrease in the size of the blood pressure, pulse wave, or blood pressure wave, and a case in which the blood pressure, pulse wave, or blood pressure wave exhibits an abnormal shape.

In step S505, the communication unit 207 may transmit a result measured by the pressure sensor 204 to an external system. The communication unit 207 may transmit pulse wave or blood pressure wave information of the subject measured by the pressure sensor 204 to an external system. The communication unit 207 may transmit blood pressure data analyzed by the pressure sensor 204 and data of the highest and lowest blood pressure values to an external system. The external system may include a display system capable of displaying the data, a storage system capable of storing the data, and an analysis system capable of in-depth analysis of the data.

In step S505, when a change occurs in the pulse wave or blood pressure wave measured by the pressure sensor 204, the communication unit 207 may transmit a signal indicating the occurrence of the change to an external system. The change may include a decrease in the size of the pulse wave or blood pressure wave, and a case in which the pulse wave or blood pressure wave has an abnormal shape. The external system may include an emergency system for notifying the medical staff of the emergency situation when an emergency situation occurs in the state of the subject. The communication unit 207 may allow the continuous blood pressure measuring device to transmit blood pressure information of the subject through wireless communication without a wire connection. The communication method used by the communication unit 207 may include a communication method such as Bluetooth, infrared, and LTE, but is not limited thereto and may include all types of communication methods capable of transmitting data.

So far, the present invention has been looked at around its preferred embodiments. Those of ordinary skill in the technical field to which the present invention pertains will be able to understand that the present invention may be implemented in a modified form without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered from an illustrative point of view rather than a limiting point of view. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope equivalent thereto should be construed as being included in the present invention.

Claims (7)

In the method of continuously measuring blood pressure using a continuous blood pressure measuring device,
Fixing the measurement unit to a part of the body of the subject while the air pocket provided in the measurement unit is in close contact with the body part of the subject;
Measuring a blood pressure of the subject in advance while increasing or decreasing the internal pressure of the air pocket using a pressure sensor;
Analyzing the measured blood pressure waveform of the subject to derive an optimum value of the internal pressure of the air pocket;
Setting the internal pressure of the air pocket to the optimum value; And
Including; measuring the blood pressure of the subject in a continuous waveform
The first air pocket is arranged to surround a part of the body of the subject over the entire inside of the band in a plurality of separate forms,
The second air pocket supplies gas contained therein to the first air pocket, receives gas from the first air pocket, and adjusts the pressure inside the first air pocket,
The pressure sensor continuously measures the change in pressure inside the first air pocket to extract a pulse wave, and obtains a waveform of the blood pressure of the subject using the extracted waveform,
The measurement unit is a continuous blood pressure measurement method for measuring blood pressure by specifying an air pocket in which the blood pressure of the subject is measured among the plurality of separated first air pockets.
The method of claim 1,
Analyzing the measured waveform; continuous blood pressure measurement method further comprising.
The method of claim 1,
The continuous blood pressure measurement method, characterized in that the body part is a wrist.
The method of claim 1,
The pre-measurement step,
Checking an internal pressure value of the air pocket;
Filling the air pocket with gas when the internal pressure value is less than or equal to a specific value; And
And measuring the blood pressure waveform of the subject in advance while increasing the pressure applied by the air pocket to the body part of the subject by increasing the internal pressure of the air pocket.
The method of claim 4,
The specific value is the continuous blood pressure measurement method, characterized in that the atmospheric pressure.
The method of claim 5,
The gas filling step,
When the internal pressure value is less than atmospheric pressure, the air pocket is opened to adjust the internal pressure to the atmospheric pressure level.
The method of claim 1,
Transmitting the measured blood pressure waveform data to an external system; continuous blood pressure measurement method further comprising.

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