Blood Pressure Monitor
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iDoctorcloud VS Other Big Brand
| Brand | Japan–*** (HBP-9020) | iDoctorcloud (RBP-9000) |
|---|---|---|
| Picture |  |  |
| Type | Common Electronic BP Monitor | PulseWave BP Monitor |
| Brand | Japan–*** (HBP-9020) | iDoctorcloud (RBP-9000) |
| Working Principle | Oscillometric, Statistic Induction | PulseWave Invention,Real-time State of Blood Flow |
| WaveForm |  |  |
| BPJudgment principle | Compute SBP/DBP from the envelope of the oscillometric waveform | Imitate the auscultatory method: *upper airbag function as Pump bulb *lower airbag function as Stethoscope to detect PulseWave |
| Application limitation | Each individual manufacturer utilizes their proprietary algorithm for SBP/DBP. Theory is far from reality for those who with irregular heartbeats | No limitation |
| Airbag | 1 Airbag | 2 Airbags *1 for Pressure Signal Detection *another 1 for PulseWave Signal Detection |
| Tube | 1 Tube | 2 Tubes *1 for Pressure Signal Detection *another 1 for PulseWave Signal Detection |
| Sensor | 1 Sensor | 2 Sensors *1 for Pressure Signal Detection *another 1 for PulseWave Signal Detection |
| Accuracy | Blood pressure：±3mmHg Pulse：±5% | Blood pressure：±2mmHg (±0.267KPa) Pulse：±2% |
| Data storage | No | 100 sets |
| Communication | RS-232C | RS-232 / USB |
| Using Intruction board | No | Yes |
Evaluation report from hosipitals/Clinics
Click here to see the hospital evaluation report of the blood pressure monitor
Specifications Of iDoctorcloud Blood Pressure Monitor
| Name | Automatic Pulsewave Blood Pressure Monitor |
|---|---|
| Model No. | RBP-7000 |
| Measurement Range | 0 ~270mmHg (0 ~36kPa) |
| Pulse rate | 40 ~180/min |
| Accuracy of BP | ± 2mmHg (±0.267kPa) |
| Accuracy of Pulse Rate | ± 2% |
| Storage Capacity | 100 sets |
| Power Supply | AC 100-240V，50-60Hz，1.6-0.8A |
| Operating Temperature | 41℉ ~ 104 ℉/ (5℃ ~ 40℃) |
| Relative Humidity | 15% ~ 80% |
| Air Pressure | 80kPa~106kPa |
| Storage Temperature | -7.6℉ ~ 131℉/ (-20 ℃ ~ 55 ℃) |
| Relative Humidity | ≤93% |
| Air Pressure | 50kPa ~106kPa |
| Gross Weight | 7.45kg |
| Packing Dimension | 500mm(L)*355mm(W)*455mm(H) 19.68’’(L)*13.98’’(W)*17.91’’(H) |
| Shock Protection | Class II, Type B |
| Arim Circumstance | 17~42cm |
| Communication | USB*1 , RS-232*2, RJ-45*1 |
| Test Ports | Upper Bladder Test Port *1, Lower Bladder Test Port*1 |
| Printer | No |
| Elbow Button | Yes, to adjust arm position |
| Horizontal 10° Adjustment | No |
| Intelligent Awakening | Yes |
How Does Pulse Wave Blood Pressure Monitor Measure?
- Pulsewave BP imitates mercury BP Monitor.
- But it’s better than mercury BP Monitor.
- Because it has 2 airbags with 2 tubes and 2 sensors.
- Upper airbag functions as a pump, lower airbag functions as the Stethoscope to detect pulse wave.
The results come from physics and maths algorithm, not by human judgement via hearing and vision.
See below diagram to know how our Blood pressure monitor work differently.
How To Have Systolic Blood Pressure Value?
H1 : the 1st pulsewave amplitude
H2 : the 2nd pulsewave amplitude
Pss1 : the airbag pressure data of H1
Pss2 : the airbag pressure data of H2
Pss0 : the airbag pressure data when pulsewave amplitude is 0.
So, we can get below equation:
(Pss1-Pss0)/H1=(Pss2-Pss0)/H2
Therefore,Pss0 is the highest pressure (SBP)
When start to measure with the pulsewave cuff, the upper airbag gets enough pressure to block the blood flow of the brachial artery, then it gradually released the pressure of upper airbag until the moment that the blood flow rushes into vessel (we call this moment as Pss0),at this moment, the pulse will generate an intensity wave,this wave compared with the airbag pressure wave,there will be a LINER DATA,we call Pss0 as the highest pressure,that is SYSTOLIC PRESSURE (SBP)
How to Have Diastolic Blood Pressure Value?
Psz1 & Psz2 & Psz3 & Psz4 : Separately stands for lower airbag pressure data (which also means the pulsewave pressure data) at each SBP points.
T1 & T2 & T3 & T4 : Separately stands for the TIME DELAY of pulsewave according to Psz1/2/3/4.
PszA & PszB : Separately stands for lower airbag pressure data when upper airbag pressure data is smaller than DBP data.
TA & TB : Separately stands for the matching time dalay
Psz0 stands for upper airbag pressure data at DBP point
T0 stands for the matching pulsewave time delay on this DBP point.
So, we get below equation:
(TA+TB)/2=T0
(Psz1-Psz0)/(T1-T0)= (Psz2-Psz0)/(T2-T0)= (Psz3-Psz0)/(T3-T0)= (Psz4-Psz0)/(T4-T0)
Therefore, Psz0 is the lowest pressure (DBP)
When blood rushes into the vessel, with the pressure released from the upper airbag, there is a time delay for blood flow from the heart to the brachial artery, and the moment when this time delay gradually approaches zero, it means the blood can flow freely without any external pressure, just flow by the heartbeats pressure, this moment stands for the lowest blood pressure (DBP), we call it Psz0.
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