CN1294873C - Tonometer - Google Patents
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- CN1294873C CN1294873C CNB2003101029051A CN200310102905A CN1294873C CN 1294873 C CN1294873 C CN 1294873C CN B2003101029051 A CNB2003101029051 A CN B2003101029051A CN 200310102905 A CN200310102905 A CN 200310102905A CN 1294873 C CN1294873 C CN 1294873C
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- 230000035488 systolic blood pressure Effects 0.000 claims abstract description 81
- 230000035487 diastolic blood pressure Effects 0.000 claims abstract description 67
- 210000000707 wrist Anatomy 0.000 claims abstract description 55
- 230000036772 blood pressure Effects 0.000 claims abstract description 37
- 238000012545 processing Methods 0.000 claims abstract description 27
- 230000003321 amplification Effects 0.000 claims abstract description 12
- 239000008280 blood Substances 0.000 claims abstract description 12
- 210000004369 blood Anatomy 0.000 claims abstract description 12
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 12
- 230000006837 decompression Effects 0.000 claims abstract description 7
- 230000010349 pulsation Effects 0.000 claims description 56
- 238000000034 method Methods 0.000 claims description 14
- 239000004973 liquid crystal related substance Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 2
- 210000001367 artery Anatomy 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000003028 elevating effect Effects 0.000 abstract 1
- 230000000903 blocking effect Effects 0.000 description 3
- 230000017531 blood circulation Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010247 heart contraction Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The present invention relates to a hemomanometer which comprises a wrist / arm band, a pressurization unit, a decompression unit, a piezoelectric assembly, a signal amplification unit and a processing unit, wherein the wrist / arm band is surrounded on the wrist or the upper arm of a person of which the blood pressure is to be measured, and the pressurization unit and the decompression unit is respectively used for increasing and decreasing the pressure in the wrist / arm band. The piezoelectric assembly outputs a plurality of pulse piezoelectric signals when impacted by the blood in the artery of the person of which the blood pressure is to be measured, and the signal amplification unit amplifies the wave shapes of the pulse piezoelectric signals and outputs the wave shapes. The processing unit compares the elevating slope of the amplified wave shapes of the pulse piezoelectric signals and determines a systolic pressure value and a diastolic pressure value.
Description
(1) technical field
The relevant a kind of sphygomanometer of the present invention, and particularly relevantly a kind ofly highlight systolic pressure value and the pairing wave form varies of diastolic blood pressure values to detect the sphygomanometer of systolic pressure value and diastolic blood pressure values with piezoelectric element.
(2) background technology
Under the trend of modern for healthy more and more attention, sphygomanometer has become the part in modern's life.Employed on the market now sphygomanometer is divided into manual pump formula sphygomanometer, vibration blood pressure (oscillationblood pressure) formula blood pressure is taken into account audition formula sphygomanometer.Manual pump formula sphygomanometer comprises that arm band, manual pump, gas bleeder valve, mercury pressure take into account stethoscope, and the doctor adopts manual pump formula sphygomanometer usually.When utilizing the manual pump formula blood pressure measuring value of taking blood pressure, be wrapped with the arm band that includes air bag at blood pressure person's to be measured upper arm, the doctor makes it to expand and pressurization just with bulge (air bag) air supply of manual pump to the arm band.And the doctor utilizes mercury column to read the interior force value of arm band, and the arm band will be oppressed the tremulous pulse of blood pressure person's to be measured upper arm, and the blood flow of upper arm is flow through in temporary transient blocking.Then, the doctor opens the gas bleeder valve that is communicated with the arm band, reduces the pressure in the arm band slowly.When pressure was lower than the systolic pressure of tremulous pulse slightly, endarterial blood generated eddy current from arm band compressing position ejection, sends korotkoff sound, is commonly called as the K sound.At this moment, the doctor can be by placing the stethoscope on the upper arm artery can recognize this sound, and the force value that measured this moment is called the systolic pressure value.Then, the pressure in the arm band continues and will reduce, and the K sound can be heard always.When can't hear this K sound, expression force value this moment is a diastolic blood pressure values.Because mode of operation from the beginning to the end all is manually, so, the trouble that operates, and the operating time will be more tediously long.General user is also difficult with correct interpretation systolic pressure and diastolic pressure.
In addition, user also can utilize vibration blood pressure formula sphygomanometer to decide systolic pressure value and diastolic blood pressure values.At first, by finding out peak swing value Amax in the vibration blood pressure.Then, finding the position (this 0.5Amax utilizes such as, statistical to get) of 0.5Amax forward, is the systolic pressure value with the pairing force value of 0.5Amax.Then, look for the position (this 0.8Amax utilizes such as, statistical to get) of 0.8Amax, be diastolic blood pressure values with the pairing force value of 0.8Amax backward.It should be noted that when seeking peak swing value Amax,, be difficult to find exactly peak swing value Amax because near the amplitude the peak swing value Amax is quite approaching.In case confuse peak swing value Amax, resulting systolic pressure value and diastolic blood pressure values will be inaccurate.
In addition, audition formula sphygomanometer is to make comparisons with pulse wave amplitude and datum line, and for example datum line is 0.5 volt (V).As long as the pulse wave amplitude greater than 0.5V will produce a serge (beep) sound, and first pairing force value of pulse wave that produces serge sound is a systolic pressure.Afterwards, when continuous serge sound stopped, the pairing force value of the pulse wave of that time was a diastolic pressure.Yet because everyone heart beating power differs, the pulse wave amplitude that causes everyone to measure is all different.If during for everyone reference value, will measure the force value of mistake, even all measure to come out with same datum line.
(3) summary of the invention
In view of this, purpose of the present invention just provides a kind of sphygomanometer.It utilizes piezoelectric element to be subjected to the design of the blood bump of tremulous pulse, makes the wave character significant change, more can precisely detect diastolic blood pressure values and systolic pressure value, promotes the accuracy of blood pressure measuring value widely.
For realizing above-mentioned purpose of the present invention, a kind of sphygomanometer according to an aspect of the present invention, in order to measure blood pressure person's to be measured blood pressure, sphygomanometer comprises piezoelectric element, signal amplification unit, processing unit and display unit at least.Piezoelectric element is exported several pulsation piezoelectric signals in order to the bump of the endarterial blood that is subjected to blood pressure person to be measured, waveform and the output of signal amplification unit in order to amplify these pulsation piezoelectric signals.Processing unit is in order to the lifting slope of waveform of these pulsation piezoelectric signals after relatively being exaggerated, and determines a systolic pressure feature according to this and involve a diastolic pressure characteristic wave.Processing unit is that output systolic pressure feature involves a systolic pressure value and the diastolic blood pressure values that the diastolic pressure characteristic wave is distinguished correspondence, and display unit is in order to show systolic pressure value and diastolic blood pressure values.
For realizing above-mentioned purpose of the present invention, a kind of sphygomanometer according to a further aspect of the invention comprises wrist/arm band, presser unit, decompressing unit, piezoelectric element, signal amplification unit, processing unit and display unit at least.Wrist/arm band is in order on the wrist or upper arm that are looped around blood pressure person to be measured, and presser unit is in order to increase the pressure in wrist/arm band, and decompressing unit is in order to reduce the pressure in wrist/arm band.Piezoelectric element be subjected to blood pressure person to be measured endarterial blood bump and export several the pulsation piezoelectric signal, signal amplification unit in order to amplify these the pulsation piezoelectric signals waveform and output.Processing unit is in order to the lifting slope of waveform of these pulsation piezoelectric signals after relatively being exaggerated, and determines a systolic pressure feature according to this and involve a diastolic pressure characteristic wave.Processing unit is that output systolic pressure feature involves a systolic pressure value and the diastolic blood pressure values that the diastolic pressure characteristic wave is distinguished correspondence, and display unit is in order to show systolic pressure value and diastolic blood pressure values.
For realizing above-mentioned purpose purpose of the present invention, according to a kind of blood pressure measuring method of another aspect of the invention.At first, wrist or one wrist on the upper arm/arm band that is looped around blood pressure person to be measured pressurizeed or reduce pressure.Then, detection several pulsation piezoelectric signals in pressurization or decompression process.Then, compare waveform slopes of these pulsation piezoelectric signals, to determine a systolic pressure value and a diastolic blood pressure values.
For further specifying above-mentioned purpose of the present invention, construction features and effect, the present invention is described in detail below with reference to accompanying drawing.
(4) description of drawings
Fig. 1 is the sketch map according to the sphygomanometer of preferred embodiment of the present invention.
Fig. 2 is the sketch map of the wave form varies of the piezoelectric element of Fig. 1 when being subjected to blood and impacting.
Fig. 3 is the enlarged diagram of the systolic pressure characteristic wave bands of Fig. 2 and pulsation piezoelectric signal before thereof.
Fig. 4 is the enlarged diagram of the diastolic pressure characteristic wave bands of Fig. 2 and pulsation piezoelectric signal before thereof.
Fig. 5 is the flow chart according to the blood pressure measuring method of preferred embodiment of the present invention.
(5) specific embodiment
Please refer to Fig. 1, it is the sketch map according to the sphygomanometer of preferred embodiment of the present invention.In Fig. 1, sphygomanometer 10 comprises wrist/arm band 11, presser unit 12, decompressing unit 13, piezoelectric element 14, signal amplification unit 15, processing unit 16 and display unit 17 at least.Wrist/arm band 11 is in order on the wrist or upper arm that are looped around blood pressure person to be measured.Presser unit 12 can be squeezed into air to wrist/arm band 11, to increase the pressure in wrist/arm band 11.Decompressing unit 13 is in order to reduce the pressure in wrist/arm band 11 in decompression process.
In the time will beginning to measure pressure value, be wrapped with the wrist/arm band 11 that includes air bag at blood pressure person's to be measured wrist or upper arm, presser unit 12 can be pressurizeed to wrist/arm band 11.When the set value that is forced into a certain standard systolic pressure value (as 140mmHg) greater than the normal person (such as, be 220mmHg) time, wrist/arm band 11 will be oppressed the blood pressure person's to be measured wrist or the tremulous pulse of upper arm, and the blood flow of wrist or upper arm is flow through in temporary transient blocking.
Then, utilize decompressing unit 13 to make the pressure in wrist/arm band 11 slowly descend.In decompression process, be disposed at piezoelectric elements 14 in the wrist/arm band 11 be subjected to blood pressure person to be measured endarterial blood bump and export several pulsation piezoelectric signals.Signal amplification unit 15 is to electrically connect with piezoelectric element 14, in order to the waveform and the output of amplifying these pulsation piezoelectric signals.Relation is shown in Fig. 2～4 between these pulsation piezoelectric signals and wrist/arm band 11 internal pressure values.Processing unit 16 is to electrically connect with signal amplification unit 15, in order to the waveform slope of these pulsation piezoelectric signals after relatively being exaggerated, and determines a systolic pressure characteristic wave bands M and a diastolic pressure characteristic wave bands N according to this.Processing unit 16 output systolic pressure characteristic wave bands M and diastolic pressure characteristic wave bands N distinguish the interior pressure of corresponding wrist/arm band 11, and the general be considered as a systolic pressure value X and a diastolic blood pressure values Y respectively.Display unit 17 is to electrically connect with processing unit 16, in order to show systolic pressure value X and diastolic blood pressure values Y.
In Fig. 2, transverse axis express time, the longitudinal axis are represented the force value in wrist/arm band 11.When the pressure in wrist/arm band 11 descended, its pressure downward trend presented a pressure curve P.As shown in Figure 3, be positioned at the systolic pressure characteristic wave bands M piezoelectric signal C of respectively pulsing before and have one first prewave C1 and one first postwave C2, systolic pressure characteristic wave bands M has one second prewave M1 and one second postwave M2.The waveform rate of rise of the first postwave C2 and waveform descending slope are respectively less than the waveform rate of rise and the waveform descending slope of the first prewave C1, and the waveform rate of rise of the second postwave M2 and waveform descending slope are respectively greater than the waveform rate of rise and the waveform descending slope of the second prewave M1.
When measuring, at first, at blood pressure person's to be measured wrist or the upper arm dress wrist/arm band 11 with air expansion, user makes it to expand and pressurization just with the bulge air supply of 12 pairs of wrists of presser unit/arm band 11.Then, user can utilize general mercury column or pressure sensing cell to read force value in the wrist/arm band 11, and wrist/arm band 11 will be oppressed blood pressure person's to be measured wrist or the tremulous pulse in the upper arm, and the blood flow of wrist or upper arm is flow through in temporary transient blocking.Then, user is opened decompressing unit 13, reduces the pressure in wrist/arm band 11 slowly.When pressure was lower than the systolic pressure of tremulous pulse slightly, endarterial blood generated eddy current from the position ejection of wrist/arm band 11 compressing wrists or upper arm, clashes into piezoelectric element 14 simultaneously, just produces systolic pressure characteristic wave bands M, just occurred simultaneously with traditional K sound, and is quite accurate.
So, processing unit 16 be with in these pulsation piezoelectric signals first to have the waveform rate of rise of postwave and waveform descending slope be the pairing systolic pressure characteristic wave bands of systolic pressure value X M greater than the pulsation piezoelectric signal of the feature of the waveform rate of rise of prewave and waveform descending slope respectively.
As shown in Figure 4, the waveform rate of rise of diastolic pressure characteristic wave bands N and waveform descending slope are respectively less than the waveform rate of rise and the waveform descending slope of the second postwave M2 of systolic pressure characteristic wave bands M.So, processing unit 16 be with in these pulsation piezoelectric signals first to have the waveform rate of rise and waveform descending slope be the pairing diastolic pressure characteristic wave bands of diastolic blood pressure values Y N less than the pulsation piezoelectric signal of the feature of the rate of rise of the second postwave M2 of systolic pressure characteristic wave bands M and waveform descending slope respectively.
Or, the piezoelectric signal D of respectively pulsing between diastolic pressure characteristic wave bands N and systolic pressure characteristic wave bands M has one the 3rd prewave D1, an intermediate wave D2 and one the 3rd postwave D3, be equivalent to continue in the tradition to hear the K sound, the waveform rate of rise of intermediate wave D2 and waveform descending slope are respectively greater than the waveform rate of rise and the waveform descending slope of the 3rd prewave D1 and the 3rd postwave D3, and the waveform rate of rise of diastolic pressure characteristic wave bands N and waveform descending slope are respectively less than the waveform rate of rise and the waveform descending slope of the intermediate wave D2 adjacent with diastolic pressure characteristic wave bands N.When diastolic pressure characteristic wave bands N occurs, just with to can't hear opportunity of K sound with stethoscope traditionally identical.
Please refer to Fig. 5, it is the flow chart according to the blood pressure measuring method of preferred embodiment of the present invention.At first, in step 52, around one wrist/arm band 11 on blood pressure person's to be measured wrist or upper arm.Then, shown in step 54, with presser unit 12 increase in wrists/arm bands 11 pressure to the set value of a certain standard systolic pressure value (as 140mmHg) greater than the normal person (such as, be 220mmHg).Then, shown in step 56, reduce pressure in the wrist/arm band 11 with decompressing unit 13.Then, shown in step 58, several pulsation piezoelectric signals that the piezoelectric elements 14 in the output wrist/arm band 11 are produced when being subjected to the blood pressure person's to be measured bump of endarterial blood.
Then, shown in step 60, amplify the waveform of these pulsation piezoelectric signals with signal amplification unit 15.Then, shown in step 62, the waveform slope of these pulsation piezoelectric signals after relatively being exaggerated with processing unit 16, and determine a systolic pressure characteristic wave bands M and a diastolic pressure characteristic wave bands N, and output systolic pressure characteristic wave bands and diastolic pressure characteristic wave bands are distinguished a systolic pressure value and a diastolic blood pressure values of correspondence.Wherein, processing unit 16 is mentioned in preamble for the judgment mode of waveform slope, is not repeated them here.Then, shown in step 64, show systolic pressure value and diastolic blood pressure values with display unit 17.
Yet person skilled in the art person can understand that also technology of the present invention is not confined to this, for example, processing unit 16 is a microprocessor (microprocessor), and display unit 18 is a liquid crystal display (liquid crystal display, LCD) or an Organic Light Emitting Diode (organic lightemitting diode, OLED) display.In addition, presser unit 12 is a motor or a manual pump, and decompressing unit 13 is a gas bleeder valve.In addition, sphygomanometer 10 also comprises a pressure sensing cell, and it is in order to measure the pressure in wrist/arm band 11 and to export a force value.
The sphygomanometer that the above embodiment of the present invention disclosed, it utilizes piezoelectric element to be subjected to the design of the blood bump of tremulous pulse, makes the wave character significant change, finds diastolic blood pressure values and systolic pressure value than being easier to, and promotes the accuracy of blood pressure measuring value widely.
In addition, though the present invention is to carry out blood pressure measurement as an illustration in the decompression process, when know that the present invention also can be applicable to carry out in the technology of blood pressure measurement in pressure process.
Though the present invention describes with reference to current specific embodiment, but those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, should understand and wherein can make variations and modifications and do not break away from the present invention in a broad sense, so be not as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the distortion of the above embodiment.
Claims (27)
1. sphygomanometer, in order to measure blood pressure person's to be measured blood pressure, this sphygomanometer comprises at least:
One piezoelectric element is in order to the bump of the endarterial blood that is subjected to this blood pressure person to be measured and export a plurality of pulsation piezoelectric signals;
One signal amplification unit is in order to the waveform and the output of amplifying these pulsation piezoelectric signals;
One processing unit, waveform slope in order to these pulsation piezoelectric signals after relatively being exaggerated, and determining a systolic pressure characteristic wave bands and a diastolic pressure characteristic wave bands according to this, this processing unit exports this systolic pressure characteristic wave bands and this diastolic pressure characteristic wave bands is distinguished corresponding a systolic pressure value and a diastolic blood pressure values; And
One display unit is in order to show this systolic pressure value and this diastolic blood pressure values;
And, be positioned at and involve one first postwave before this systolic pressure characteristic wave bands piezoelectric signal of respectively pulsing before all has one first, before having one second, the pulsation piezoelectric signal of this systolic pressure characteristic wave bands involves one second postwave, wherein, the waveform rate of rise of first postwave of the piezoelectric signal of respectively pulsing before this systolic pressure characteristic wave bands and waveform descending slope are respectively less than the waveform rate of rise and the waveform descending slope of correspondingly first prewave, and the waveform rate of rise of second postwave of the pulsation piezoelectric signal of this systolic pressure characteristic wave bands and waveform descending slope are respectively greater than the waveform rate of rise and the waveform descending slope of correspondingly second prewave.
2. sphygomanometer as claimed in claim 1 is characterized in that this processing unit is to have the waveform rate of rise of postwave and waveform descending slope in piezoelectric signals with these pulsation to be pairing this systolic pressure characteristic wave bands of this systolic pressure value greater than first pulsation piezoelectric signal of the feature of the waveform rate of rise of prewave and waveform descending slope respectively.
3. sphygomanometer as claimed in claim 1 is characterized in that the waveform rate of rise of this diastolic pressure characteristic wave bands and waveform descending slope are respectively less than the waveform rate of rise and the waveform descending slope of this second postwave of this systolic pressure characteristic wave bands.
4. sphygomanometer as claimed in claim 3 is characterized in that this processing unit is that to have the waveform rate of rise and waveform descending slope in piezoelectric signals with these pulsation be pairing this diastolic pressure characteristic wave bands of this diastolic blood pressure values less than first pulsation piezoelectric signal of the feature of the rate of rise of this second postwave of this systolic pressure characteristic wave bands and waveform descending slope respectively.
5. sphygomanometer as claimed in claim 1, it is characterized in that respectively this pulsation piezoelectric signal between this diastolic pressure characteristic wave bands and this systolic pressure characteristic wave bands has one the 3rd prewave, involve one the 3rd postwave in the middle of one, the waveform rate of rise of this intermediate wave and waveform descending slope are respectively greater than the waveform rate of rise and the waveform descending slope of the 3rd prewave and the 3rd postwave, and the waveform rate of rise of this diastolic pressure characteristic wave bands and waveform descending slope are respectively less than the waveform rate of rise and the waveform descending slope of this intermediate wave of this pulsation piezoelectric signal adjacent with this diastolic pressure characteristic wave bands.
6. sphygomanometer as claimed in claim 1 is characterized in that this processing unit is a microprocessor.
7. sphygomanometer as claimed in claim 1 is characterized in that this sphygomanometer also comprises:
One wrist/arm band is on the wrist or upper arm that are looped around blood pressure person to be measured.
8. sphygomanometer as claimed in claim 1 is characterized in that this sphygomanometer also comprises:
One pressure sensing cell is in order to measure the pressure in this wrist/arm band and to export a force value.
9. sphygomanometer as claimed in claim 1 is characterized in that this display unit is a liquid crystal display.
10. sphygomanometer as claimed in claim 1 is characterized in that this display unit is an organic light emitting diode display.
11 1 kinds of sphygomanometers comprise at least:
One wrist/arm band is on the wrist or upper arm that are looped around blood pressure person to be measured;
One presser unit is in order to increase the pressure in this wrist/arm band;
One decompressing unit is in order to reduce the pressure in this wrist/arm band;
One piezoelectric element, be subjected to this blood pressure person to be measured endarterial blood bump and export a plurality of pulsation piezoelectric signals;
One signal amplification unit is in order to the waveform and the output of amplifying these pulsation piezoelectric signals;
One processing unit, waveform slope in order to these pulsation piezoelectric signals after relatively being exaggerated, and determining a systolic pressure characteristic wave bands and a diastolic pressure characteristic wave bands according to this, this processing unit is that this systolic pressure characteristic wave bands of output and this diastolic pressure characteristic wave bands are distinguished corresponding a systolic pressure value and a diastolic blood pressure values; And
One display unit is in order to show this systolic pressure value and this diastolic blood pressure values;
And, be positioned at and involve one first postwave before this systolic pressure characteristic wave bands piezoelectric signal of respectively pulsing before all has one first, before having one second, the pulsation piezoelectric signal of this systolic pressure characteristic wave bands involves one second postwave, wherein, the waveform rate of rise of first postwave of the piezoelectric signal of respectively pulsing before this systolic pressure characteristic wave bands and waveform descending slope are respectively less than the waveform rate of rise and the waveform descending slope of correspondingly first prewave, and the waveform rate of rise of second postwave of the pulsation piezoelectric signal of this systolic pressure characteristic wave bands and waveform descending slope are respectively greater than the waveform rate of rise and the waveform descending slope of correspondingly second prewave.
12. sphygomanometer as claimed in claim 11 is characterized in that this processing unit is to have the waveform rate of rise of postwave and waveform descending slope in piezoelectric signals with these pulsation to be pairing this systolic pressure characteristic wave bands of this systolic pressure value greater than first pulsation piezoelectric signal of the feature of the waveform rate of rise of prewave and waveform descending slope respectively.
13. sphygomanometer as claimed in claim 11 is characterized in that the waveform rate of rise of this diastolic pressure characteristic wave bands and waveform descending slope are respectively less than the waveform rate of rise and the waveform descending slope of this second postwave of this systolic pressure characteristic wave bands.
14. sphygomanometer as claimed in claim 13 is characterized in that this processing unit is that to have the waveform rate of rise and waveform descending slope in piezoelectric signals with these pulsation be pairing this diastolic pressure characteristic wave bands of this diastolic blood pressure values less than first pulsation piezoelectric signal of the feature of the rate of rise of this second postwave of this systolic pressure characteristic wave bands and waveform descending slope respectively.
15. sphygomanometer as claimed in claim 11, respectively this pulsation piezoelectric signal that it is characterized in that being positioned at before this diastolic pressure characteristic wave bands and this systolic pressure characteristic wave bands has one the 3rd prewave, involve one the 3rd postwave in the middle of one, wherein, the waveform rate of rise of this intermediate wave and waveform descending slope are respectively greater than the waveform rate of rise and the waveform descending slope of the 3rd prewave and the 3rd postwave, and the waveform rate of rise of this diastolic pressure characteristic wave bands and waveform descending slope are respectively less than the waveform rate of rise and the waveform descending slope of this intermediate wave of this pulsation piezoelectric signal adjacent with this diastolic pressure characteristic wave bands.
16. sphygomanometer as claimed in claim 11 is characterized in that this processing unit is a microprocessor.
17. sphygomanometer as claimed in claim 11 is characterized in that this presser unit is a motor.
18. sphygomanometer as claimed in claim 11 is characterized in that this presser unit is a manual pump.
19. sphygomanometer as claimed in claim 11 is characterized in that this decompressing unit is a gas bleeder valve.
20. sphygomanometer as claimed in claim 11 is characterized in that this sphygomanometer also comprises:
One pressure sensing cell is in order to measure the pressure in this wrist/arm band and to export a force value.
21. sphygomanometer as claimed in claim 11 is characterized in that this display unit is a liquid crystal display.
22. sphygomanometer as claimed in claim 11 is characterized in that this display unit is an organic light emitting diode display.
23. a blood pressure measuring method comprises:
Wrist or one wrist on the upper arm/arm band that is looped around blood pressure person to be measured pressurizeed or reduce pressure;
The a plurality of pulsation piezoelectric signals of detection in this pressurization or decompression process; And
The waveform slopes that compare these pulsation piezoelectric signals are to determine a systolic pressure value and a diastolic blood pressure values;
Relatively this step of the waveform slope of these pulsation piezoelectric signals also comprises:
Amplify these pulsation piezoelectric signals;
The waveform slope of these pulsation piezoelectric signals after relatively being exaggerated, and determine a systolic pressure characteristic wave bands and a diastolic pressure characteristic wave bands, and export this systolic pressure characteristic wave bands and this diastolic pressure characteristic wave bands and distinguish corresponding this systolic pressure value and this diastolic blood pressure values;
And, be positioned at and involve one first postwave before this systolic pressure characteristic wave bands piezoelectric signal of respectively pulsing before all has one first, before having one second, the pulsation piezoelectric signal of this systolic pressure characteristic wave bands involves one second postwave, wherein, the waveform rate of rise of first postwave of the piezoelectric signal of respectively pulsing before this systolic pressure characteristic wave bands and waveform descending slope are respectively less than the waveform rate of rise and the waveform descending slope of correspondingly first prewave, and the waveform rate of rise of second postwave of the pulsation piezoelectric signal of this systolic pressure characteristic wave bands and waveform descending slope are respectively greater than the waveform rate of rise and the waveform descending slope of correspondingly second prewave.
24. method as claimed in claim 23 is characterized in that this step that determines a systolic pressure characteristic wave bands also comprises:
Have the waveform rate of rise of postwave and waveform descending slope in piezoelectric signals with these pulsation and be pairing this systolic pressure characteristic wave bands of this systolic pressure value greater than first pulsation piezoelectric signal of the feature of the waveform rate of rise of prewave and waveform descending slope respectively.
25. method as claimed in claim 23 is characterized in that the waveform rate of rise of this diastolic pressure characteristic wave bands and waveform descending slope are respectively less than the waveform rate of rise and the waveform descending slope of this second postwave of this systolic pressure characteristic wave bands.
26. method as claimed in claim 25 is characterized in that this step that determines a diastolic pressure characteristic wave bands also comprises:
Having the waveform rate of rise and waveform descending slope in piezoelectric signals with these pulsation is pairing this diastolic pressure characteristic wave bands of this diastolic blood pressure values less than first pulsation piezoelectric signal of the feature of the rate of rise of this second postwave of this systolic pressure characteristic wave bands and waveform descending slope respectively.
27. method as claimed in claim 26, respectively this pulsation piezoelectric signal that it is characterized in that being positioned at before this diastolic pressure characteristic wave bands and this systolic pressure characteristic wave bands has one the 3rd prewave, involve one the 3rd postwave in the middle of one, wherein, the waveform rate of rise of this intermediate wave and waveform descending slope are respectively greater than the waveform rate of rise and the waveform descending slope of the 3rd prewave and the 3rd postwave, and the waveform rate of rise of this diastolic pressure characteristic wave bands and waveform descending slope are respectively less than the waveform rate of rise and the waveform descending slope of this intermediate wave of this pulsation piezoelectric signal adjacent with this diastolic pressure characteristic wave bands.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101029051A CN1294873C (en) | 2003-10-22 | 2003-10-22 | Tonometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101029051A CN1294873C (en) | 2003-10-22 | 2003-10-22 | Tonometer |
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| Publication Number | Publication Date |
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| CN1608582A CN1608582A (en) | 2005-04-27 |
| CN1294873C true CN1294873C (en) | 2007-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2003101029051A Expired - Fee Related CN1294873C (en) | 2003-10-22 | 2003-10-22 | Tonometer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101342077B (en) * | 2007-07-11 | 2010-06-02 | 东莞市正源电子科技有限公司 | Medical non-hydrargyrum sphygmomanometer |
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| US5720292A (en) * | 1996-07-31 | 1998-02-24 | Medwave, Inc. | Beat onset detector |
| CN1175192A (en) * | 1995-02-16 | 1998-03-04 | 医疗波谱公司 | Method and apparatus for calculating blood pressure |
| US5941828A (en) * | 1993-11-09 | 1999-08-24 | Medwave, Inc. | Hand-held non-invasive blood pressure measurement device |
| CN1418595A (en) * | 2002-12-26 | 2003-05-21 | 天津市先石光学技术有限公司 | Wrist type electric sphygmomanometer, and its application method |
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2003
- 2003-10-22 CN CNB2003101029051A patent/CN1294873C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5941828A (en) * | 1993-11-09 | 1999-08-24 | Medwave, Inc. | Hand-held non-invasive blood pressure measurement device |
| CN1175192A (en) * | 1995-02-16 | 1998-03-04 | 医疗波谱公司 | Method and apparatus for calculating blood pressure |
| US5720292A (en) * | 1996-07-31 | 1998-02-24 | Medwave, Inc. | Beat onset detector |
| CN1418595A (en) * | 2002-12-26 | 2003-05-21 | 天津市先石光学技术有限公司 | Wrist type electric sphygmomanometer, and its application method |
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