CN116348034A - Blood pressure measuring device and blood pressure measuring method thereof - Google Patents
Blood pressure measuring device and blood pressure measuring method thereof Download PDFInfo
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- CN116348034A CN116348034A CN202380008436.2A CN202380008436A CN116348034A CN 116348034 A CN116348034 A CN 116348034A CN 202380008436 A CN202380008436 A CN 202380008436A CN 116348034 A CN116348034 A CN 116348034A
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Abstract
The invention provides a blood pressure measuring device. The blood pressure measuring device comprises an inflator pump, a constant-speed air release valve and a control circuit. The inflator pump is used for being connected with the tourniquet. The constant-speed air release valve is used for being connected with the pulse pressing belt. The control circuit is connected to the inflator pump. When the control circuit determines the pressure release time length of the pressure pulse belt to be adjusted according to the initial pressure time length, the control circuit is used for controlling the inflator pump to simultaneously inflate the pressure pulse belt while the constant-speed air release valve releases air to the pressure pulse belt so as to adjust the pressure release time length of the pressure pulse belt. The initial pressurization time period is the time period for the inflator to inflate the tourniquet to a preset pressure value at an initial pressurization rate.
Description
Technical Field
The present invention relates to a blood pressure measuring device and a blood pressure measuring method thereof, and more particularly to a blood pressure measuring device and a blood pressure measuring method thereof suitable for different types of tourniquet and different subjects.
Background
The current blood pressure measuring device cannot automatically adjust the corresponding blood pressure measuring mode according to different types of blood pressure bands, but must be pre-configured with a 'child mode' or an 'adult mode', and must be configured with a special blood pressure band size for a child or a special blood pressure band size for an adult, so as to avoid the problems of injury or measurement misalignment of a tested person when measuring blood pressure.
However, if a blood pressure measuring device is provided, it is able to automatically determine and adapt to different types of tourniquet and different subjects, and thus it is more convenient and safe to use.
Disclosure of Invention
Some embodiments of the present invention provide a blood pressure measuring device. The blood pressure measuring device comprises an inflator pump, a constant-speed air release valve and a control circuit. The inflator pump is used for being connected with the tourniquet. The constant-speed air release valve is used for being connected with the pulse pressing belt. The control circuit is connected to the inflator pump. When the control circuit determines the pressure release time length of the pressure pulse belt to be adjusted according to the initial pressure time length, the control circuit is used for controlling the inflator pump to simultaneously inflate the pressure pulse belt while the constant-speed air release valve releases air to the pressure pulse belt so as to adjust the pressure release time length of the pressure pulse belt. The initial pressurization time period is the time period for the inflator to inflate the tourniquet to a preset pressure value at an initial pressurization rate.
Some embodiments of the present invention provide a blood pressure measurement method. The blood pressure measuring method is suitable for a blood pressure measuring device. The blood pressure measuring device comprises an air pump, a constant-speed air release valve and a pulse pressing belt. The blood pressure measuring method comprises the following steps: in the initial operation, the inflator pump inflates the tourniquet to a preset pressure value at an initial pressurization rate, and the control circuit obtains the initial pressurization time length; judging whether to adjust the pressure release time length of the pressure pulse belt by the control circuit according to the initial pressure time length; and when the pressure release time length is determined to be adjusted, in the measurement operation, the control circuit controls the inflator pump to simultaneously inflate the pressure pulse belt while the constant-speed air release valve releases air to adjust the pressure release time length of the pressure pulse belt.
In order to make the above features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
The above and other objects, features, advantages and embodiments of the present invention will become more apparent by reading the following description of the accompanying drawings in which:
FIG. 1 is a schematic diagram of a blood pressure measuring device according to some embodiments of the present invention;
FIG. 2 is a flowchart of a blood pressure measurement method according to some embodiments of the present invention; and
FIG. 3 is a diagram of experimental data illustrating the operation of a blood pressure measurement device according to some embodiments of the present invention.
Reference numerals
100: blood pressure measuring device
110: control circuit
130: inflator pump
150: constant speed air release valve
170: quick air release valve
900: pulse pressing belt
112: control chip
114: pressure sensing circuit
116: filtering circuit
118: bluetooth communication circuit
200: blood pressure measuring method
S210, S230, S250: step (a)
C1 C2, C3: curve of curve
D1 And D2: point(s)
T1: initial length of pressurization time
T2: length of pressurization time
T3: length of pressure relief time
P1: preset pressure value
P2: measuring pressure value
Detailed Description
The term "coupled," as used herein, may also refer to "electrically coupled," and the term "connected," may also refer to "electrically connected. "coupled" and "connected" may also mean that two or more elements co-operate or interact with each other.
Please refer to fig. 1. Fig. 1 is a schematic diagram of a blood pressure measuring apparatus 100 according to some embodiments of the invention.
As shown in fig. 1, the blood pressure measuring device 100 includes a control circuit 110, an inflator 130, a constant velocity air bleed 150, and a rapid air bleed 170. In connection, the control circuit 110 is connected to the quick release valve 170, and the control circuit 110 is connected to the inflator 130. The control circuit 110, the inflator 130, the constant velocity air release valve 150 and the rapid air release valve 170 are connected with the tourniquet 900.
In some embodiments, as shown in fig. 1, the control circuit 110 includes a control chip 112, a pressure sensing circuit 114, a filtering circuit 116 and a bluetooth communication circuit 118. In connection, the pressure sensing circuit 114 is connected with the filter circuit 116, the filter circuit 116 is connected with the control chip 112, and the control chip 112 is connected with the Bluetooth communication circuit 118. The pressure sensing circuit 114 is in turn connected to the tourniquet 900. The control chip 112 is in turn connected to an inflator 130 and a quick release valve 170.
Please refer to fig. 2. Fig. 2 is a flowchart of a blood pressure measurement method 200 according to some embodiments of the invention. The blood pressure measurement method 200 may be performed by the blood pressure measurement device 100 of fig. 1. The blood pressure measurement method 200 includes steps S210 to S250.
In step S210, in an initial operation, the cuff is inflated to a preset pressure value at an initial pressurization rate by the inflator, and an initial pressurization time period is obtained by the control circuit. Please refer to fig. 1. Step S210 may be performed by the inflator 130 and the control circuit 110 shown in fig. 1.
Please refer to fig. 1. In an initial operation, the inflator 130 inflates the tourniquet 900 at an initial pressurization rate until the pressure value of the tourniquet 900 increases from 0 to a preset pressure value, or the inflator 130 inflates the tourniquet 900 at an initial pressurization rate until the pressure value of the tourniquet 900 increases from 0 to 80% to 90% of the preset pressure value, i.e., the initial pressurization time period taken by the control circuit 110. In some examples, the initial pressurization rate is either the maximum pressurization rate or the upper limit value of the maximum pressurization rate, however, the embodiments of the present disclosure are not limited as described above.
For example, please refer to fig. 3. FIG. 3 is a diagram 300 of experimental data illustrating the operation of the blood pressure measurement device of FIG. 1 according to some embodiments of the present invention. The horizontal axis in the experimental data graph 300 is time (t), and the vertical axis is the pressure value of the tourniquet 900 in fig. 1. Curve C1 in fig. 3 is experimental data of the initial operation. Point D1 in curve C1 represents the initial pressurization time period T1 when the tourniquet 900 reaches the preset pressure value P1 in the initial operation.
Wherein the preset pressure value P1 is 140mmHg, 150mmHg, 160mmHg, or the like, and the initial pressurizing time period T1 is 5.5 seconds, 6 seconds, 6.5 seconds, or the like. However, the implementation means of the present disclosure is not limited to the above.
Then, as shown in a curve C1 of fig. 3, in the initial operation, when the inflator 130 inflates the tourniquet 900 at the initial pressurization rate and the tourniquet 900 reaches the preset pressure value, the quick release valve 170 leaks the tourniquet 900 to make the pressure value of the tourniquet 900 drop to 0, so as to complete the determination of the type of the tourniquet or the type of the subject.
In step S230, the control circuit determines whether to adjust the pressure release time of the pressure belt according to the initial pressure release time. Please refer to fig. 1. In some embodiments, step S230 is performed by the control circuit 110 shown in fig. 1.
In step S230, when the initial pressurization time length is smaller than or greater than the pressurization time length reference value, or when the initial pressurization time length is smaller than or greater than 1.05% to 1.15% of the pressurization time length reference value, the control circuit 110 determines that at least one of the pressurization time length and the depressurization time length of the tourniquet 900 needs to be adjusted.
In some cases, when the initial pressurization time period is smaller than or larger than the pressurization time period reference value, the control circuit 110 is further configured to determine that at least one of the initial pressurization time period and the depressurization time period needs to be adjusted. Specifically, if the initial pressurization time length is different from or does not match the pressurization time length reference value, the control circuit 110 determines that the blood pressure measurement mode of the blood pressure measurement device 100 should be changed or increased. After the control circuit 110 changes or increases the blood pressure measurement mode, the initial pressurization time period reference value is also adjusted to a value corresponding to the changed or increased blood pressure measurement mode.
For example, it is assumed that the blood pressure measurement modes of the blood pressure measurement device 100 include an adult mode (L size) and a child mode, and the initial pressurization time length reference value of the adult mode (L size) is 10 seconds, and the initial pressurization time length reference value of the child mode is 5 seconds. If the blood pressure measurement mode of the blood pressure measurement device 100 is preset to be the adult mode (L size) and the initial pressurization time period obtained by the control circuit 110 is 5 seconds in the initial operation of step S210, the control circuit 110 adjusts the blood pressure measurement mode of the blood pressure measurement device 100 to be the child mode according to the initial pressurization time period and adjusts the reference value of the initial pressurization time period to be 5 seconds.
In another example, in the initial operation of step S210, the blood pressure measurement mode of the blood pressure measurement device 100 is preset to be the adult mode (L size), and the initial pressurization time period obtained by the control circuit 110 is 7 seconds, at this time, the control circuit 110 increases the blood pressure measurement mode to be the adult mode (M size) according to the initial pressurization time period, and adjusts the reference value of the initial pressurization time period to be 7 seconds, and at the same time, the blood pressure measurement mode also adjusts the above values, for example: preset pressure value, reference value of pressurizing time length, adjusting current, pressurizing current, etc.
In step S250, when it is determined that the pressure release time length needs to be adjusted, in the measurement operation, the control circuit controls the inflator pump to inflate the pressure belt simultaneously while the constant-speed air release valve releases air in the pressure belt, so as to adjust the pressure release time length of the pressure belt. Step S250 is performed by the control circuit 110, the inflator 130, and the constant velocity bleed valve 150 as shown in fig. 1.
When it is determined that the pressure release time period needs to be adjusted, the control circuit 110 inputs an adjustment current to the inflator 130, so that the inflator 130 inflates the pressure pulse band 900 while the pressure pulse band 900 vents through the constant-speed air release valve 150 according to the adjustment current, so as to reduce the pressure release rate of the pressure pulse band 900, and further make the pressure release time period longer.
Assume that in an initial operation, inflator 130 receives an initial pressurization current from control circuit 110 to inflate tourniquet 900 at an initial pressurization rate in accordance with the initial pressurization current. Then in the measurement operation of step S250, the control circuit 110 inputs 3% to 20% of the initial pressurization current to the inflator 130 while the constant velocity air release valve 150 is releasing, for example: may be 3%, 5%, 8%, 10% or 12%, etc. The above-described adjustment currents are merely illustrative, and the embodiments are not limited thereto.
If the control circuit 110 determines in step S230 that the length of the pressurization time of the tourniquet 900 needs to be adjusted, the control circuit 110 also determines in step S250 that the pressurization rate at which the tourniquet 900 is pressurized needs to be adjusted. The control circuit 110 adjusts the pressurization rate so that the pressurization time length is not less than the pressurization time length reference value in the measurement operation.
Assume that in an initial operation, inflator 130 receives an initial pressurization current from control circuit 110 to inflate tourniquet 900 at an initial pressurization rate in accordance with the initial pressurization current. Then in the measurement operation of step S250, the control circuit 110 inputs the control circuit 110 with the inflator 130 a pressurization current of 40% to 80% of the initial pressurization current, for example: may be 45%, 50%, 55%, 60% or 70%, etc. The above-described pressurization current is merely illustrative, and the embodiment is not limited thereto.
Please refer to fig. 3. Curve C2 in fig. 3 is experimental data of a measurement operation in which the pressurization time period is adjusted but the depressurization time period is not adjusted. Curve C3 in fig. 3 is experimental data of a measurement operation for adjusting the length of pressurization time and the length of depressurization time.
Curves C2 and C3 each include point D2. Point D2 represents the length of pressurization time T2 when the tourniquet 900 reaches the measured pressure value P2. In some embodiments, the measured pressure value P2 and the preset pressure value P1 may be the same or similar, or may correspond to the preset pressure value according to the adjusted blood pressure measurement mode.
The adjusted pressurizing time period T2 is 2 times the initial pressurizing time period T1, and the adjusted pressure release time period T3 (the time period for the pressure belt 900 to drop from the measured pressure value P2 to 0) may be 3 times, 4 times, 5 times, or the like the initial pressurizing time period T1. In some embodiments, the adjusted pressurization time period T2 may be 10 (+ -error value) seconds, 11 seconds, 12 seconds, 15 seconds, or the like. The adjusted pressurization time period T2 and the adjusted depressurization time period T3 are only used for illustration, and the embodiment is not limited thereto.
When the initial pressurization time length is smaller than the pressurization time length reference value, the size of the tourniquet 900 is indicated to be the size of a young child or the size of a small animal, so the control circuit 110 adjusts the pressurization time length and the decompression time length of the tourniquet 900 to ensure that the pressurization rate of the tourniquet 900 does not hurt the tested object too quickly, and the blood pressure can be measured more accurately by lengthening the decompression time length. Is safer and more accurate in operation, and improves the using sense of the tested object when measuring the blood pressure.
On the other hand, if the initial pressurization time length is not less than the pressurization time length reference value, it indicates that the size of the tourniquet 900 is the size of an adult or the size of a large animal, so the control circuit 110 can measure without adjusting the pressurization time length and the depressurization time length of the tourniquet 900, or the control circuit 110 can adjust to shorten the pressurization time length and the depressurization time length of the tourniquet 900, so as to facilitate reducing the duration of blood pressure measurement of the tested subject.
Thus, the blood pressure measuring device and the blood pressure measuring method thereof in the embodiment of the present invention can automatically determine what kind of tourniquet or what kind of measured object is used, and provide a small inflation flow through the inflator pump to adjust the pressure of the tourniquet 900 without changing the aperture of the air release valve. Therefore, the pressure rising rate in the small-size pressure pulse band can not be too high, the operation is safer, and the pressure falling rate in the small-size pressure pulse band can not be too high, so that the blood pressure measuring device can obtain enough signal interval length to measure more accurate blood pressure values.
In addition, the blood pressure measuring device and the blood pressure measuring method thereof in the embodiment of the invention can be suitable for different testees without changing hardware elements. Because the limbs of the testee are different, the initial pressurization time length of the tourniquet 900 is different under the condition that the initial pressurization rates are the same, and the embodiment of the present disclosure can make the blood pressure measuring device be safer to use and obtain more accurate blood pressure values under the condition of different testees by adjusting the pressurization time length and the decompression time length of the tourniquet 900.
Please refer to fig. 1. In some embodiments, the pressure sensing circuit 114 in fig. 1 is configured to sense the pressure value in the pressure pulse band 900 and transmit the sensed pressure value (pressure waveform) to the filtering circuit 116. The filtering circuit 116 is used for filtering the pressure values (pressure waveforms) in the tourniquet 900 transmitted by the pressure sensing circuit 114, and transmitting the filtered pressure values (pressure waveforms) to the control chip 112. The control chip 112 is configured to analyze the pressure value of the tourniquet 900 according to the filtered pressure value (pressure waveform diagram), and is configured to execute the steps S210 to S250. The bluetooth communication circuit 118 is used for transmitting the measurement result or the pressure value obtained by the control chip 112 to an electronic device (not shown) or a display device (not shown) for the user to operate or view.
The control circuit 110 may be a server, a circuit, a central processing unit (central processorunit, CPU), a Microprocessor (MCU) or other devices with equivalent functions for storing, calculating, reading data, receiving signals or messages, transmitting signals or messages. Various functional elements are disclosed herein. It will be apparent to one of ordinary skill in the art that the functional elements may be implemented by circuitry, whether dedicated circuitry or general-purpose circuitry that operates under the control of one or more processors and encoded instructions.
Various functional elements are disclosed herein. It will be apparent to one of ordinary skill in the art that the functional elements may be implemented by circuitry, whether dedicated circuitry or general-purpose circuitry that operates under the control of one or more processors and encoded instructions.
While the present invention has been described with reference to the above embodiments, it should be understood that the invention is not limited thereto, but may be variously modified and modified by those skilled in the art without departing from the spirit and scope of the present invention, and the scope of the present invention is defined by the appended claims.
Claims (16)
1. A blood pressure measuring device, comprising:
an inflator pump connected with a tourniquet;
a constant speed air release valve connected with the pulse pressing belt; and
the control circuit is connected with the air pump, and is used for controlling the air pump to simultaneously inflate the pressure pulse belt when the control circuit determines that the pressure release time length of the pressure pulse belt needs to be adjusted according to the initial pressure time length and the constant speed air release valve releases air to the pressure pulse belt so as to adjust the pressure release time length of the pressure pulse belt;
wherein the initial pressurization time period is the time period for the inflator to inflate the tourniquet to a preset pressure value at an initial pressurization rate.
2. The blood pressure measuring device of claim 1, wherein the control circuit is further configured to determine to adjust at least one of the initial pressurization time period and the depressurization time period when the initial pressurization time period is less than or greater than a pressurization time period reference value.
3. The blood pressure measuring device of claim 1, wherein the control circuit is further configured to determine a pressurization rate for pressurizing the tourniquet and a depressurization rate for depressurizing the tourniquet when the initial pressurization time is less than or greater than a pressurization time reference value.
4. The blood pressure measuring device of claim 3, wherein the control circuit is further configured to adjust the pressurization rate such that a pressurization time period of the tourniquet is not less than the pressurization time period reference value.
5. The blood pressure measuring device of claim 3, wherein the initial pressurization rate corresponds to an initial pressurization current, the pressurization rate corresponds to a pressurization current, and wherein the pressurization current is 40% to 80% of the initial pressurization current.
6. The blood pressure measuring device of claim 1, wherein the control circuit is further configured to input an adjustment current to the pump when the pressure release time is determined to be adjusted, so that the pump inflates the cuff while the cuff is being deflated via the constant-speed deflation valve according to the adjustment current;
wherein the initial pressurization time length corresponds to an initial pressurization current, and the adjustment current is 3% to 20% of the initial pressurization current.
7. The blood pressure measuring device of claim 1, wherein the control circuit is further configured to determine the pressure release time period and a pressure release time period of the tourniquet to be adjusted when the initial pressure release time period is less than a pressure release time period reference value, wherein the adjusted pressure release time period is at least 3 times the adjusted pressure release time period.
8. The blood pressure measuring device of claim 1, further comprising:
the quick release valve is used for releasing air from the pressure pulse belt when the inflator pump inflates the pressure pulse belt at the initial pressurization rate and the pressure pulse belt reaches the preset pressure value.
9. The blood pressure measuring method is characterized by being applied to a blood pressure measuring device, wherein the blood pressure measuring device comprises a control circuit, an inflator pump and a constant-speed air release valve, and the blood pressure measuring method comprises the following steps:
in an initial operation, inflating a tourniquet to a preset pressure value at an initial pressurizing rate by the inflator pump, and obtaining an initial pressurizing time length by the control circuit;
judging whether to adjust a pressure release time length of the pressure pulse belt by the control circuit according to the initial pressure time length; and
when the pressure release time length is determined to be adjusted, in a measurement operation, the control circuit controls the inflator pump to inflate the pressure pulse belt simultaneously while the constant-speed air release valve releases air to adjust the pressure release time length of the pressure pulse belt.
10. The method of claim 9, further comprising:
when the initial pressurization time length is smaller than or larger than a pressurization time length reference value, the control circuit determines that at least one of the initial pressurization time length and the pressure relief time length needs to be adjusted.
11. The method of claim 9, wherein when the initial pressurization rate corresponds to an initial pressurization current, the pressurization rate corresponds to a pressurization current, wherein the pressurization current is 40% to 80% of the initial pressurization current.
12. The method of claim 9, further comprising:
when the pressure release time length is determined to be adjusted, an adjusting current is input to the inflator pump by the control circuit, so that the inflator pump inflates the pressure pulse belt according to the adjusting current while the pressure pulse belt leaks air through the constant-speed air release valve; wherein the initial pressurization time length corresponds to an initial pressurization current, and the adjustment current is 3% to 20% of the initial pressurization current.
13. The method of claim 12, further comprising:
the control circuit adjusts a pressurization current input to the inflator pump to adjust a pressurization time length so that the pressurization time length is not smaller than the pressurization time length reference value.
14. The method of claim 13, wherein the adjusted pressure release time period is at least 3 times longer than the adjusted pressure release time period.
15. The method of claim 9, further comprising:
in the measurement operation, the inflator pump inflates the tourniquet to a measurement pressure value at a pressurizing rate, and the control circuit obtains a pressurizing time length;
wherein the measured pressure value is the same as or similar to the preset pressure value, and the measured pressure value is adjusted according to a blood pressure measurement mode of the blood pressure measurement device.
16. The method of claim 9, further comprising:
when the initial pressurization time length is smaller than or larger than a pressurization time length reference value, the control circuit adjusts or newly increases a blood pressure measurement mode of the blood pressure measurement device according to the initial pressurization time length.
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| CN2023078179 | 2023-02-24 |
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| TWI692345B (en) * | 2019-02-20 | 2020-05-01 | 百略醫學科技股份有限公司 | A blood pressure measuring apparatus capable of estimating arteriosclerosis |
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