31 results about "Blood Pressure Determinations" patented technology

The invention relates to the field of physiological signal detection, and discloses a blood pressure measurement system based on brachial artery cuff pressurization and finger PPG detection, which comprises a pressure control module, a PPG acquisition module and a central processing unit. The central processing unit is configured to extract a multi-dimensional PPG feature vector from the PPG signal in real time; dynamically adjusting the change mode of the cuff pressure applied by the pressure control module in a closed-loop manner based on the change of the PPG feature vector; constructing a dynamic response map based on the synchronously recorded cuff pressure and PPG feature vector; and determining a blood pressure value based on the overall analysis of the dynamic response map. Determining the blood pressure value specifically includes identifying a systematic distorted phase transition point in the atlas to determine systolic pressure. Through closed-loop adaptive excitation and global trajectory analysis, blood pressure determination is established on the basis of hemodynamic state transition, dependence on isolated event points is avoided, and measurement robustness and accuracy are improved.

A system for determining a blood pressure value of a user including a sensor adapted to receive a signal from the user and a processor. The processor is preferably programmed to perform operations that include monitoring a safety condition of the sensor, initiating the sensor to collect the signal, monitoring a quality of the signal received from the sensor, generating a compressed signal from the signal, delivering the compressed signal as an input to a model for determining the blood pressure value, and receiving the blood pressure value from the model. In a preferred configuration the system allows calibrationless detection of blood pressure with video acquisition platform.

The invention relates to determining blood pressure of a subject based on a pressure signal that has been measured by using a measurement device comprising a) a shell encasing a part of the subject, through which blood flows, b) a pressure applicator applying pressure to the shell and thereby to the encased part of the subject, and c) a pressure sensor measuring the pressure signal on the skin of the encased part of the subject. For several pressure pulses of the pressure signal a respective feature characterizing the respective pressure pulse is determined, wherein based on the respective feature a respective blood pressure determination value is determined, thereby forming a blood pressure determination curve (TPW_M-curve) that is used for determining the blood pressure. This allows to determine the blood pressure with relatively low computational efforts.

The invention relates to a blood pressure cuff (204) configured to surround a body part (11) of a subject for determining the blood pressure of the subject, wherein the blood pressure cuff (204) comprises an inflatable bladder (213) and a shell (12) configured to enclose the bladder (213) during use, wherein the bladder (213) comprises an active bladder area (225), in which fluid is flowable for inflating the bladder (213), wherein the blood pressure cuff (204) is configured to be usable such that the active bladder area (225) is not in contact with the environment (255), when the blood pressure cuff (204) surrounds the body part (11) and is inflated.

A blood pressure measurement device (1) is provided with: a device main body (3); a first cuff (4) that is provided on the device main body (3) and that presses the living body (300); a strap (6) that is provided on the outer surface side of the first cuff (4) and that is wound around a living body (300); and a regulating member (7) that regulates the relative movement of the first cuff (4) and the strap (6) in the width direction and enables the relative movement of the first cuff (4) and the strap (6) in the longitudinal direction.

The present invention provides a cuff structure and a blood pressure measuring device capable of improving the measurement accuracy of blood pressure. The cuff structure (6) comprises a sensing cuff (73), a pressing cuff (71) and a wall portion (76). The sensing cuff (73) is configured to be long in one direction and contacts the area where the artery (210) of the wrist (200) is located. The pressing cuff (71) is configured to be long in one direction and is provided on the side opposite to the surface of the sensing cuff (73) on the wrist (200) side and presses the sensing cuff (73) to the wrist by expanding. The wall portion (76) is provided along at least one of the edges of the sensing cuff (73) along the longitudinal direction, and the top surface of the wall portion (76) on the wrist (200) side contacts the wrist.

A blood pressure measuring device (1) is provided with: a collar (5) that bends in the circumferential direction of a region where a living body is mounted; and a cuff having: a plurality of bag-shaped structures (81, 101) which are stacked and long in one direction, are formed by welding two sheet members formed from a resin material, and are expanded by a fluid; and a joined part which is provided on at least a part of the edge part of the bag-shaped structure (81, 101) disposed facing the collar (5), is joined to the outer peripheral surface side of the collar (5), and is formed by a part of the sheet member constituting the bag-shaped structure (81, 101) disposed facing the collar (5).

A biological information measuring device includes: a blood pressure measuring section that measures blood pressure of a subject, the blood pressure measuring section having a cuff that compresses a measured site of the subject, a pump that supplies gas into the cuff, an exhaust valve that adjusts discharge of the gas from the cuff, a pressure detecting section that detects a cuff pressure as a pressure in the cuff, a cuff pressure control section that controls the pump and the exhaust valve, and a blood pressure operation section that calculates the blood pressure of the subject; an electrocardiogram measuring section that measures an electrocardiogram waveform by processing an electrical signal acquired by a plurality of electrodes, the plurality of electrodes including an electrode provided on a side of the measured site of the cuff and capable of contacting a skin of the subject; and an electrocardiogram storage section that stores information of the measured electrocardiogram waveform in association with time, the biological information measuring device including an interval specifying section that specifies an interval of the information of the electrocardiogram waveform from the information of the electrocardiogram waveform stored in the electrocardiogram storage section based on a progress of the measurement of the blood pressure of the subject in parallel with the measurement of the electrocardiogram waveform.

A flow path plate unit in which a flow path for a fluid is formed and which is provided with a connection part to a pump and a cuff, the flow path plate unit comprising: a first plate member in which at least a connection part to the pump is formed; a second plate member on which at least a connection portion to the cuff is formed; a film sheet disposed between the first plate member and the second plate member and provided with one or more orifices; a first thick film sheet disposed between the first plate member and the thin film sheet, having a flow path for communicating a portion of the first plate member connected to the pump and the orifice of the thin film sheet, and having a thickness larger than that of the thin film sheet; and a second thick film sheet which is disposed between the second plate member and the film sheet, is provided with a flow path for communicating a connection portion of the second plate member and the cuff and the orifice of the film sheet, and has a thickness larger than that of the film sheet.

The blood pressure measuring cuff (20) of the present invention comprises: an outer fabric (21) extending in a longitudinal direction (X) in a strip shape and used for wrapping around a measured part (90); a pressing fluid bag (23) extending along the longitudinal direction (X) and arranged on a side of the outer fabric (21) facing the measured part (90) and used for pressing the measured part (90); a sound acquisition fluid bag (22) arranged between the outer fabric (21) and the pressing fluid bag (23) in a thickness direction (Z) perpendicular to the outer fabric (21) and acquiring sound from the measured part (90) via the pressing fluid bag (23); a first fluid piping (38) connected to the pressing fluid bag (23) in a fluid-flowable manner; and a second fluid piping (37) separated from the first fluid piping (38) and connected to the sound acquisition fluid bag (22) in a fluid-flowable manner.

The blood pressure measuring device (1) comprises: a cuff structure (6) having connecting portions (84, 93), the connecting portions (84, 93) being located at a position opposite to the wrist (200) side of the housing (11) and connected to the connected portion (38A, 38B) of the housing (11); a belt body (61) having a bag body (63) and a mounting portion (64), wherein the bag body (63) has a hole formed at one end in the longitudinal direction opposite to the connected portion (38A, 38B) with the cuff structure (6) disposed inside, for mounting the connecting portion (84, 93). 65A, 65B), one end of the mounting part (64) is fixed to one end of the bag body (63) and is closer to the other end than the hole (65A, 65B) of the bag body (63), and the other end of the mounting part (64) is mounted to the mounting part (35). When the cuff structure (6) is disposed in the bag body (63), the length from one end to the mounting part (35) is shorter than the length from one end to the connecting part (84, 93); and the fixing part (62) is provided in the bag body (63) to fix the part of the bag body (63) that is folded back and stacked on the shaft part (36).

The invention relates to a blood pressure cuff (4)configured to surround a body part (11) of a subject for determining the blood pressure of the subject, wherein the blood pressure cuff comprises an inflatable bladder (13) with an inner layer and an outer layer, wherein a) the blood pressure cuff further comprises a shell (12) having an inner side merged with the outer layer of the bladder, and / or b) the outer layer of the bladder is more rigid than the inner layer of the bladder. By using such a blood pressure cuff, the quality of measured pressure pulses indicative of the pressure within the bladder, can be increased significantly, which allows for blood pressure measurements having an increased accuracy.

The invention describes a measurement method for the continuous non-invasive determination of blood pressure using two blood volume sensors, which are under two different applied pressures. The non-linear function, which is updated for each cardiac cycle, is used to model the relationship between blood pressure and relative blood volume change. The model depends on relative blood volume changes and applied external pressures to the sensors. The derived model needs one point blood pressure calibration. The blood volume sensor can be optical sensor, such as photoplethysmographic sensor, however, any transducer, which converts blood volume or relative blood volume to electrical signal, is applicable. As one possible application, the method can be used for the blood pressure determination at one finger. However, the method is not limited with the blood volume measurement sites (e.g. radial artery etc.).

The present invention provides a cuff and a blood pressure measuring device that can suppress the formation of wrinkles that affect blood pressure measurement results and can easily manufacture the sheet material components constituting the cuff. The press cuff (71) includes: a plurality of air bags (81) formed by fixing two sheet material components (86) that are longer in one direction at their outer periphery, and stacked in a way that they can be rolled around a living body with their length direction aligned; a notch (84) provided in at least one of the air bags (81) on the wrist (100) side, formed by cutting off the two sheet material components (86) from one end toward the other in the width direction; and a second fixing part (85) provided in a frame shape on the inner side of the outer periphery of the two opposing sheet material components (86) of two adjacent air bags (81) to fix the two air bags.

A blood pressure measuring device and a health degree evaluating device in which a patient can easily grasp the onset risk of a cardiovascular disease. A sphygmomanometer (10) has a cuff (14), a sensor (24), a control section (30), and the like as a blood pressure measuring unit, and a storage section (32) that stores blood pressure values. The control section (30) calculates an index related to the health degree of a subject based on a plurality of blood pressure values and their fluctuation characteristics stored in the storage section (32).

In the present application, a blood pressure measuring cuff (20) is worn around a rod-shaped measured site (90) of a subject. Light projecting sections (34E, 34F) are arranged only along the edge portions (20e, 20f) of one side or both sides in the width direction (Y) of the cuff (20), and irradiate light (Le, Lf) to the periphery (92e, 92f) of a target region (92) of the measured site (90). A light receiving section (35) is provided in a sheet shape along a specific portion (20b1) of the inner surface (20b) of the cuff (20) facing the target region (92), and receives light (Le', Lf') scattered or reflected by the target region (92) to obtain an image containing a vein pattern (Px) of the target region (92). An authentication section compares the vein pattern (Px) with a reference vein pattern (Pr) registered in advance, and performs vein authentication for the subject.

Provided is a sphygmomanometer capable of measuring blood pressure with high accuracy as much as possible without performing data collection for parameter setting of a blood pressure measurement algorithm and calibration of measurement results. This sphygmomanometer is provided with: a cuff wound around the arm of a person to be measured; an inspection unit that inspects the cuff pressure received by the cuff from the arm; a decomposition unit that acquires, on the basis of the cuff pressure, a first waveform indicating a time-series change in a characteristic quantity relating to the blood pressure of the subject, and that decomposes the first waveform into a plurality of second waveforms indicating two or more different characteristic quantities; a learning model constructed by machine learning using the second waveforms for the plurality of subjects as explanatory variables and blood pressure measured by auscultation as target variables; a measurement unit that inputs the plurality of second waveforms into the learning model to measure the blood pressure of the subject; and an output unit that outputs the blood pressure measured by the measurement unit.

A cuff structure (3) for use in a blood pressure measurement device (1) is provided with: one or more air bags (71, 81) that are inflated by a fluid; and one or more members (51, 53, 71, 81) included in the air bag (71, 81) or laminated on the air bag (71, 81), bent portions (55) being provided on at least two of the air bag (71, 81) and the one or more members (51, 53), one of the bent portions (55) being formed by an opening or a divided portion, and the other of the bent portions (55) being formed by an opening, a divided portion, a cutout, a recess, or a groove.

This biological information measurement device is provided with: a blood pressure measurement means comprising a cuff for measuring the blood pressure of a human body; a biological information measurement means for measuring biological information different from the blood pressure; a band part which is wound and fixed around the outer periphery of the arm part of the human body and in which the cuff provided on the inner peripheral side is disposed on the outer periphery of the arm part; the main body part comprises a bottom part, and the bottom part is positioned on one side which is in contact with the arm part in a wearing state; and a sensor which is provided on the bottom portion and measures the biological information by coming into contact with the arm portion, a plurality of the cuffs are provided in the extension direction of the band portion, and the sensor is disposed at a change suppression position on the bottom portion. The bottom portion change suppression position is a position of the bottom portion on an extension line of a resultant vector obtained by combining vectors of forces acting from a center portion of the arm portion toward a most-expanded portion of the cuff, the vectors being formed by combining vectors of forces acting from a center portion of the arm portion toward the most-expanded portion of the cuff. The change suppression position of the bottom portion can suppress a change in the contact state of the sensor with respect to the arm portion due to the expansion of the cuff.

A sphygmomanometer of the present application has a blood pressure measuring cuff (20) to be worn by winding around a measurement site, a pressure device (32, 33) to pressurize or depressurize the cuff (20), and a sound detecting device (35) to detect a sound emitted from the measurement site via the cuff (20). A magnification setting section (110) variably sets a magnification for a Korotkoff sound component based on a first passing time required for a pressure of the cuff (20) to pass through a first pressure range during pressurization of the cuff (20). A blood pressure calculating section (350, 110) receives an output of the sound detecting device (35) corresponding to the sound from the cuff (20), and amplifies a Korotkoff sound component contained in the output at the set magnification to calculate a blood pressure of the measurement site.

A cuff for measuring blood pressure by being wound around a portion to be measured, the cuff being characterized by being provided with: a bag-shaped exterior portion having a circumferential direction, which is the direction in which the cuff is wound around the portion to be measured, and a width direction, which is the direction orthogonal to the circumferential direction, the width direction being the direction in which the cuff is wound around the portion to be measured; the outer side surface becomes the outer side when the cuff is worn, and the inner side surface becomes the inner side when the cuff is worn; a fluid bag accommodated in the exterior part; and a shackle fastener which is provided on the surface of the exterior part and which is provided with scales for dividing the exterior part in the circumferential direction on the surface of the exterior part, the cuff being configured so as to be able to determine where a prescribed site of the cuff is located at the scales when the cuff is worn.

An apparatus for determining blood pressure of a subject is presented. The apparatus comprises a pressure signal providing unit configured to provide a measured pressure signal (TP) of a subject over a time, wherein the pressure signal is indicative of blood pulsations and comprises a plurality of pressure pulses. The apparatus further comprises a processor that is configured to determine, based on the plurality of pressure pulses, a blood pressure determination curve (TPW_M-curve) indicative for a dependence of the pressure pulses on the applied pressure, to apply a transformation to the blood pressure determination curve and to determine the blood pressure based on a result of the transformation. This allows to determine the blood pressure more accurately.

Techniques for multi-sensor differential measurement for blood pressure determination are described. In one or more implementations, sensor data is received from a plurality of sensors positioned at different locations on a body. A time delay of a physiological event at two or more locations on the body is determined based on the sensor data. At least one differential measurement between the two or more locations is calculated based on the time delay. A blood pressure measurement is determined based on the at least one differential measurement.

The present application provides a blood pressure measuring cuff which is excellent in durability and easy to use. The blood pressure measuring cuff (1) comprises: a belt-shaped body (10) formed by enclosing an air bag (7) in an outer cloth (11) and an inner cloth (12) opposite to the outer cloth (11); a first opening portion (15) provided in the outer cloth (11); and a first hook-and-loop fastener (5) fused to the outer cloth (11) in a state in which the first opening portion (15) is closed from the inner side of the belt-shaped body (10) and a loop surface (5k) of the first hook-and-loop fastener (5) is exposed from the first opening portion (15).

Techniques for multi-sensor differential measurement for blood pressure determination are described. In one or more implementations, sensor data is received from a plurality of sensors positioned at different locations on a body. A time delay of a physiological event at two or more locations on the body is determined based on the sensor data. At least one differential measurement between the two or more locations is calculated based on the time delay. A blood pressure measurement is determined based on the at least one differential measurement.

A cuff structure (3) for use in a blood pressure measurement device (1) is provided with: one or more air bags (71, 81) that are inflated by a fluid; and one or more members (51, 53, 71, 81) included in the air bag (71, 81) or laminated on the air bag (71, 81), bent portions (55) being provided on at least two of the air bag (71, 81) and the one or more members (51, 53), one of the bent portions (55) being formed by an opening or a divided portion, and the other of the bent portions (55) being formed by an opening, a divided portion, a cutout, a recess, or a groove.

A blood pressure measurement device (1) which is worn on a wrist (300) by means of a strap (6) is provided with: a device body (3) which has a case (11), a pump (14) provided inside the case (11), a pressure sensor (17), a fluid circuit (24) connected to the pump (14) and the pressure sensor (17), and a sensor unit (31b1) provided on the rear surface (31b) of the case (11) facing the wrist (300); a first pressing cuff (52) connected to the fluid circuit (24) and fixed to one end in one direction of the back surface (31b) of the housing (11) so as to be separated from the sensor unit (31b1); and a second pressing cuff (62) which is connected to the fluid circuit (24), is fixed to the other end of the back surface (31b) of the housing (11) in the one direction so as to be separated from the sensor unit (31b1), and is fluidly connected to the first pressing cuff (52). The first pressing cuff (52) and the second pressing cuff (62) are wound around the wrist (300) by the strap (6), and when the blood pressure measurement device (1) is worn on the wrist (300) with the assumed maximum circumference, at least one of the first pressing cuff (52) and the second pressing cuff (62) faces at least one of the two arteries, and the first pressing cuff (52) and the second pressing cuff (62) overlap.

The utility model embodiment provides a kind of sphygmomanometer and sphygmomanometer host computer, and the sphygmomanometer host computer includes shell, control mainboard, inflation and deflation device, pressure sensor, display screen component and battery component.The acceleration sensor for detecting the posture information of the person being measured when blood pressure determination is integrated on the control mainboard, the inflation and deflation device includes inflation motor, deflation valve, and communication pipe connected between inflation motor and deflation valve, all with control mainboard electric connection, the communication pipe also has gas outlet, and the gas outlet is used to export high-pressure gas stream from inflation motor to shell outside;The pressure sensor is fixed to control mainboard and is used to detect the pressure of gas;The display screen component is used to display blood pressure information, person being measured posture information and battery capacity information.The utility model embodiment realizes sitting posture and lying down double posture measurement function, can satisfy user and promptly discover high blood pressure condition, and early corresponding treatment.

A method for determining blood pressure is provided. The method may involve obtaining measured plethysmograph data and pressure data that corresponds to a time period comprising a first portion during which an external pressure perturbation was not applied and a second portion during which the external pressure perturbation was applied. The method may involve generating predicted plethysmograph data using: (i) initial blood pressure values; (ii) at least a subset of the measured plethysmograph data associated with the first portion during which the external pressure perturbation was not applied; and (iii) the pressure data. The method may involve modifying the initial blood pressure values based on a difference between the predicted plethysmograph data and the measured plethysmograph data to generate final blood pressure values.

The present application relates to a blood pressure management system and method, the blood pressure management system comprising a first blood pressure collection device and a second blood pressure collection device allowing blood pressure measurement data of a subject to be interacted, the first blood pressure collection device being attachable to the subject in a wearable manner for acquiring a first blood pressure status metric of the subject associated with time and at least one physiological characteristic data associated with the first blood pressure status metric; the second blood pressure collection device being operably attachable to the subject for determining a blood pressure status matching the first blood pressure status metric based on the at least one physiological characteristic data and acquiring a second blood pressure status metric under the blood pressure status; a processor for correcting the first blood pressure status metric acquired by the first blood pressure collection device based on the second blood pressure status metric determined by the second blood pressure collection device. The present application provides a blood pressure management system and method for accurately quantifying blood pressure of a user at any time without a medical-grade blood pressure monitoring device.