Wrist Blood Pressure Measurement Device

Abstract

A wrist blood pressure measuring device is worn on a wrist of a user, and includes a wearable pressure-applying component, a posture sensing unit, a sound sensing unit, a processing unit, an inflation and deflation unit, a pressure sensing unit, and an output unit. The posture sensing unit is configured to detect whether the wrist of the user is at a predetermined tilt angle, the sound sensing unit is configured to detect a heart sound of the user, the processing unit is coupled to the posture sensing unit and the sound sensing unit and outputs a signal associated with the tilt angle and the heart sound, and the inflation and deflation unit is configured to fill the airbag unit with a filling gas based on the signal so that the wearable pressure-applying component applies a pressure to the wrist.

Description

Technical Field

[0001] The utility model relates to a blood pressure measuring device, in particular to a wrist-type blood pressure measuring device which can measure blood pressure at a correct position. Background Art

[0002] With the rise of health awareness, people have gradually become accustomed to monitoring their own health-related values ​​in daily life, so as to detect potential health problems in the body early. When seeing a doctor, they can also refer to their usual physical data to facilitate the doctor's diagnosis.

[0003] Blood pressure monitors are one of the most common household medical devices in people's daily lives. Traditional arm-type blood pressure monitors are relatively large in size. Although they can measure accurate values, they are not convenient to carry and install in every household. In order to facilitate users to monitor their blood pressure regularly, wrist-type blood pressure monitors have been developed. They can be worn directly on the user's wrist for measurement. They have the advantages of being small in size, easy to store and carry, etc.

[0004] Generally speaking, the cuff of a traditional arm-type blood pressure monitor is worn on the user's arm. The user sits and leans his elbow on the table to measure the height, angle and distance of the arm from the heart. However, a wrist-type blood pressure monitor is worn directly on the user's wrist, and the fixed posture is not as good as an arm-type blood pressure monitor. It is easy to cause the problem of inaccurate blood pressure measurement results due to incorrect measurement posture. Therefore, the prior art, such as U.S. Patent No. US9895084B2, discloses a wrist-type blood pressure monitor that can measure blood pressure after confirming the tilt angle and height of the user's wrist. However, the aforementioned method cannot determine the distance of the measurement position relative to the heart, and there is still a problem of inaccurate measurement data. Utility Model Content

[0005] The main purpose of the utility model is to solve the problem that the wrist blood pressure monitor in the prior art cannot accurately ensure that the user's wrist is in the correct position to measure the blood pressure, resulting in inaccurate measurement data.

[0006] In order to solve the above problems, the utility model provides a wrist blood pressure measuring device, which comprises:

[0007] A wearable pressure-applying assembly worn on the wrist, comprising an airbag unit and a wearable unit for fixing the airbag unit to the wrist of the user;

[0008] a posture sensing unit configured to detect whether the wrist of the user is at a predetermined tilt angle;

[0009] a sound sensing unit configured to detect a heart sound of the user;

[0010] a processing unit coupled to the posture sensing unit and the sound sensing unit, the processing unit outputting a signal associated with the tilt angle and the heart sound;

[0011] an air inflation and deflation unit connected to the airbag unit, the air inflation and deflation unit being configured to fill the airbag unit with a filling gas based on the signal so that the wearable pressure-applying component applies a pressure to the wrist;

[0012] a pressure sensing unit coupled to the airbag unit and configured to transmit the detected pressure to the processing unit, and the processing unit generates blood pressure data according to the pressure; and

[0013] An output unit is coupled to the processing unit and is configured to output a measurement result associated with the blood pressure data.

[0014] In the wrist blood pressure measuring device, the posture sensing unit is an acceleration sensor.

[0015] In the wrist blood pressure measuring device, the sound sensing unit is a microphone.

[0016] In the wrist-type blood pressure measuring device, the inflation and deflation unit is a pump.

[0017] In the wrist blood pressure measuring device, the output unit is a display screen, a speaker or a combination thereof.

[0018] The above-mentioned wrist-type blood pressure measuring device, wherein the blood pressure data includes systolic pressure, diastolic pressure, pulse and heart rate.

[0019] In the above-mentioned wrist-type blood pressure measuring device, when the posture sensing unit detects that the tilt angle is not within the pre-specified range, the wrist-type blood pressure measuring device is in an inactive state.

[0020] In the wrist blood pressure measuring device, the sound sensing unit performs a heart sound matching algorithm based on a big data database associated with a plurality of heart sound data to determine whether the heart sound is detected.

[0021] In the above-mentioned wrist-type blood pressure measuring device, when the sound sensing unit does not detect the heart sound, the wrist-type blood pressure measuring device is in an inactive state.

[0022] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 , which is a schematic diagram of an embodiment of the utility model.

[0024] Figure 2, which is a schematic diagram of a method according to an embodiment of the present utility model.

[0025] Figure 3A , which is a schematic diagram of the usage of an embodiment of the utility model. Figure 3B , which is a schematic diagram of the usage of an embodiment of the utility model. Figure 3C , which is a schematic diagram of the usage of an embodiment of the utility model.

[0026] Among them, the reference numerals

[0027] 1: Wrist blood pressure measurement device

[0028] 10: Wearable pressure component

[0029] 11: Airbag unit

[0030] 13: Wearable unit

[0031] 20: Control components

[0032] 21: Processing Unit

[0033] 211: Big Data Database

[0034] 211a: Heart sound data

[0035] 22: Posture sensing unit

[0036] 23: Sound sensing unit

[0037] 231: Radio

[0038] 232: Amplifier

[0039] 233: Filter

[0040] 234: Signal Converter

[0041] 24: Inflating and deflation unit

[0042] 25: Output unit

[0043] 26: Operation unit

[0044] 27: Pressure sensing unit

[0045] P:User

[0046] P1: Wrist

[0047] θ: Tilt angle

[0048] S: Heart sounds

[0049] S1: First heart sound

[0050] S2: Second heart sound

[0051] V: Voiceprint

[0052] V1: First Voiceprint

[0053] V2: Second voiceprint

[0054] H: Heart

[0055] A: Amplitude

[0056] F: Frequency

[0057] R: Regularity

[0058] A1, A2, A3, A4, F1, F2, F3, F4, R1, R2, R3, R4: Characteristic data

[0059] a1, a2: Amplitude characteristics

[0060] f1, f2: frequency characteristics

[0061] r1, r2: regularity characteristics DETAILED DESCRIPTION

[0062] The structural principle and working principle of the utility model are described in detail below in conjunction with the accompanying drawings:

[0063] The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Unless the context indicates otherwise, the singular forms "a", "an" and "the" used herein may also include plural forms.

[0064] Directional terms used herein, such as up, down, left, right, front, back and their derivatives or synonyms, refer to the orientation of elements in the drawings and are not intended to limit the present invention unless the context clearly states otherwise.

[0065] See Figure 1 』、『 Figure 3A 』、『 Figure 3B "and" Figure 3C 』, the utility model discloses a wrist blood pressure measuring device 1, which is worn on a wrist P1 of a user P, and the wrist blood pressure measuring device 1 includes a wearable pressure-applying component 10 and a control component 20, the wearable pressure-applying component 10 is coupled to the control component 20 and the control component 20 is fixed on the wearable pressure-applying component 10, and can be conveniently carried as a whole. In this example, the wearable pressure-applying component 10 is an inflatable wristband, and the control component 20 is a device host, which is used to control the inflation and deflation of the wearable pressure-applying component 10, and can display the physiological values ​​measured by the user P, such as systolic pressure, diastolic pressure, pulse, heart rate, etc.

[0066] The wearable pressure-applying assembly 10 includes an airbag unit 11 and a wearable unit 13. The wearable unit 13 is disposed on the airbag unit 11 and is worn on the wrist P1 of the user P to fix the wearable pressure-applying assembly 10. In one example, the wearable unit 13 can be repeatedly removed and worn by the wearable pressure-applying assembly 10, such as Velcro, buckles, etc.

[0067] The control assembly 20 includes a processing unit 21, a posture sensing unit 22, a sound sensing unit 23, an inflation and deflation unit 24, an output unit 25, an operation unit 26, and a pressure sensing unit 27. The processing unit 21 is coupled to the posture sensing unit 22, the sound sensing unit 23, the inflation and deflation unit 24, the output unit 25, the operation unit 26, and the pressure sensing unit 27, and is used to receive and send signals or instructions. The pressure sensing unit 27 is coupled to the airbag unit 11 and is used to detect the pressure in the airbag unit 11. When the airbag unit 11 is in an inflated state, the blood vessels in the wrist P1 of the user P are squeezed, and the pressure sensing unit 27 extracts a pressure according to the pulse in the blood vessels of the wrist P1.

[0068] The posture sensing unit 22 is used to detect the wrist posture of the user P. Specifically, the posture sensing unit 22 is used to detect an inclination angle θ of the wrist P1 of the user P. The inclination angle θ is within a predetermined standard. In the accompanying drawings of this example, the wrist blood pressure measurement device 1 is worn on the wrist P1 of the left hand of the user P as an example. Figure 3A 』、『 Figure 3B ' is viewed towards the left side of the user P, ' Figure 3C ' is viewed from the front side of the user P, and the tilt angle θ is Figure 3A "to" Figure 3C The angle of view is defined as a horizontal plane, with clockwise angles being positive and counterclockwise angles being negative. In one example, the posture sensing unit 22 is an acceleration sensor and is configured to detect whether the tilt angle θ of the wrist P1 of the user P is between 24° and 26°.

[0069] The sound sensing unit 23 is used to detect a heart sound S of the user P. The processing unit outputs a signal associated with the tilt angle θ and the heart sound S to the inflation and deflation unit 24. The inflation and deflation unit 24 is connected to the airbag unit 11 and provides a filling gas to the airbag unit 11 based on the signal. The filling gas is air. The inflation and deflation unit 24 can also discharge the filling gas in the airbag unit 11. The output unit 25 is used to display the measurement result and / or emit a prompt sound. The operation unit 26 is used to control the processing unit 21. In one example, the sound sensing unit 23 is a microphone, the inflation and deflation unit 24 is a pump, the output unit 25 is a display screen, a speaker or a combination thereof, and the operation unit 26 is an operation button and a power switch. In other examples, the output unit 25 and the operation unit 26 can be integrated into a touch screen for operation and display of measurement results.

[0070] See Figure 1 "and" Figure 2 』, the processing unit 21 has a big data database 211, the big data database 211 is coupled to the sound sensing unit 23, the big data database 211 is associated with a plurality of heart sound data 211a, the heart sound data 211a includes an amplitude A, a frequency F, a regularity R or a combination of the foregoing.

[0071] The sound sensing unit 23 includes a microphone 231, an amplifier 232, a filter 233, and a signal converter 234. The amplifier 232 is coupled to the microphone 231, the filter 233 is coupled to the amplifier 232, the signal converter 234 is coupled to the filter 233, and the signal converter 234 is connected to the big data database 211. The heart sound S of the user P is sequentially transmitted from the microphone 231 through the amplifier 232, the filter 233, and the signal converter 234, and is compared with the big data database 211.

[0072] The volume (amplitude) of the heart sound 235a is increased by the amplifier 232, and the sound of a specific frequency is removed by the filter 233. The heart sound S undergoes an analog-to-digital conversion in the signal converter 234, converting the analog continuous signal into a digital discrete signal to obtain a voiceprint V of the heart sound S of the user P. The voiceprint V is matched with the heart sound data 211a in the big data database 211 through a heart sound matching algorithm to determine whether the heart sound S meets a standard. The standard is based on the amplitude A, the frequency F, and the regularity R of the heart sound data 211a to determine the similarity or consistency of the voiceprint V of the heart sound S of the user P. In one example, the frequency F of the heart sound data 211a is between 20 Hz and 200 Hz.

[0073] Furthermore, the heart sound S of the user P includes a first heart sound S1 and a second heart sound S2. The first heart sound S1 and the second heart sound S2 respectively have a first voiceprint V1 and a second voiceprint V2. The first voiceprint V1 has an amplitude characteristic a1, a frequency characteristic f1, and a regularity characteristic r1. The second voiceprint V2 has an amplitude characteristic a2, a frequency characteristic f2, and a regularity characteristic r2.

[0074] The heart sound matching algorithm compares the amplitude feature a1, the frequency feature f1, the regularity feature r1 of the first voiceprint V1 and the amplitude feature a2, the frequency feature f2, the regularity feature r2 of the second voiceprint V2 with the plurality of feature data A1, A2, A3, A4, F1, F2, F3, F4, R1, R2, R3, R4 of the big data database 211 to determine whether the standard is met and obtain a result. If all the standards are met, the result is "Meet", indicating that the heart sound S is detected. If any of the standards is not met, the result is "Not Meet", indicating that the heart sound S is not detected. In an example, when the frequency feature f1 is 40 Hz to 60 Hz and the frequency feature f2 is 40 Hz to 100 Hz, the standard of the feature data F1, F2, F3, F4 is met.

[0075] See Figure 3A "to" Figure 3C 』, when the user P wants to measure blood pressure, the wearable unit 13 of the wearable pressure-applying assembly 10 is worn on the wrist P1 of the user P. The position of the wrist P1 changes with the movement of the user P, so that the wrist-type blood pressure measuring device 1 cannot accurately measure blood pressure. When the tilt angle θ of the posture sensing unit 22 does not meet an angle threshold set by the processing unit 21, or the heart sound S detected by the sound sensing unit 23 does not meet the characteristic data A1, A2, A3, A4, F1, F2, F3, F4, R1, R2, R3, R4 set by the processing unit 21 (i.e., any of the tilt angle θ and the heart sound S does not meet the preset conditions), the processing unit 21 controls the inflation and deflation unit 24 not to inflate the airbag unit 11. In one embodiment, the angle threshold is between 24° and 26°.

[0076] For example, when the wrist P1 of the user P is in the position as shown in " Figure 3A ', the tilt angle θ does not meet the angle threshold set by the processing unit 21, and the sound sensing unit 23 cannot detect the heart sound S. At this time, the inflation and deflation unit 24 does not inflate the airbag unit 11. Figure 3B', even if the inclination angle θ of the wrist P1 meets the angle threshold set by the processing unit 21 (the inclination angle θ is between 24° and 26°), the wrist P1 is far away from the heart H of the user P, so that the sound sensing unit 23 cannot detect the heart sound S. At this time, the inflation and deflation unit 24 does not inflate the airbag unit 11.

[0077] When the wrist P1 of the user P is raised to a position parallel to the heart H and close to the heart H (such as " Figure 3C 』), the inclination angle θ is within the range of the angle threshold, and the heart sound S conforms to the characteristic data A1, A2, A3, A4, F1, F2, F3, F4, R1, R2, R3, R4 (that is, the inclination angle θ and the heart sound S both meet the preset conditions), the processing unit 21 controls the inflation and deflation unit 24 to inflate the airbag unit 11 to perform blood pressure measurement.

[0078] Specifically, when the tilt angle θ detected by the posture sensing unit 22 is in the range of 24° to 26° and the sound sensing unit 23 detects the heart sound, the wrist blood pressure measurement device 1 performs the following steps:

[0079] Step S1: The inflation / deflation unit 24 fills the airbag unit 11 of the wearable pressure-applying component 10 with the filling gas so that the wearable pressure-applying component 10 worn on the wrist P1 applies pressure to the wrist P1.

[0080] Step S2: The pressure sensing unit 27 transmits the detected pressure to the processing unit 21, and the processing unit 21 generates blood pressure data according to the pressure.

[0081] Step S3: The output unit 25 outputs a measurement result, which is associated with the blood pressure data.

[0082] On the other hand, when the posture sensing unit 22 detects that the tilt angle θ is not within the range of 24° to 26° or the sound sensing unit 23 does not detect the heart sound S (either condition is met), the wrist blood pressure measurement device 1 is in an unactivated state, that is, the processing unit 21 controls the inflation and deflation unit 24 not to inflate the airbag unit 11, and the output unit 25 does not display the measurement result.

[0083] In summary, the wrist-type blood pressure measuring device disclosed in the utility model includes the posture sensing unit and the sound sensing unit at the same time. When the tilt angle detected by the posture sensing unit and the heart sound detected by the sound sensing unit both meet the preset conditions, the processing unit controls the inflation and deflation unit to fill the airbag unit with the filling gas to perform the blood pressure measurement step, thereby avoiding blood pressure measurement in an incorrect posture, which may cause inaccurate blood pressure measurement results.

[0084] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A wrist blood pressure measuring device, worn on a wrist of a user, characterized in that Include: A wearable pressure-applying assembly worn on the wrist, comprising an airbag unit and a wearable unit for fixing the airbag unit to the wrist of the user; a posture sensing unit configured to detect whether the wrist of the user is at a predetermined tilt angle; a sound sensing unit configured to detect a heart sound of the user; a processing unit coupled to the posture sensing unit and the sound sensing unit, the processing unit outputting a signal associated with the tilt angle and the heart sound; an air inflation and deflation unit connected to the airbag unit, the air inflation and deflation unit being configured to fill the airbag unit with a filling gas based on the signal so that the wearable pressure-applying component applies a pressure to the wrist; a pressure sensing unit coupled to the airbag unit and configured to transmit the detected pressure to the processing unit, and the processing unit generates blood pressure data according to the pressure; as well as An output unit is coupled to the processing unit and is configured to output a measurement result associated with the blood pressure data.

2. The wrist blood pressure measuring device according to claim 1, wherein: The posture sensing unit is an acceleration sensor.

3. The wrist blood pressure measuring device according to claim 1, wherein: The sound sensing unit is a microphone.

4. The wrist blood pressure measuring device according to claim 1, wherein: The inflation and deflation unit is a pump.

5. The wrist blood pressure measuring device according to claim 1, wherein: The output unit is a display screen, a speaker or a combination thereof.

6. The wrist blood pressure measuring device according to claim 1, wherein: The blood pressure data includes systolic pressure, diastolic pressure, pulse and heart rate.

7. The wrist blood pressure measuring device according to claim 1, wherein: When the posture sensing unit detects that the tilt angle is not within the pre-specified range, the wrist-type blood pressure measuring device is in an inactive state.

8. The wrist blood pressure measuring device according to claim 1, wherein: The sound sensing unit performs a heart sound matching algorithm based on a big data database associated with a plurality of heart sound data to determine whether the heart sound is detected.

9. The wrist blood pressure measuring device according to claim 1, wherein: When the sound sensing unit does not detect the heart sound, the wrist blood pressure measuring device is in an inactive state.

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