Blood pressure measuring apparatus capable of estimating arteriosclerosis
AssigneeMicrolife Corporation
InventorChia-Ming LIN
Life of this patent
Estimating the term…
Abstract
A blood pressure measuring apparatus with a cuff comprises a cuff, an inflation unit, a deflation unit, a pressure sensor, a signal record and storage unit, and an operation and analysis unit. The operation and analysis unit is used to control the inflation unit and the deflation unit to increase the pressure within the cuff to a first pressure, maintain the pressure at the first pressure for a specified interval, then increase the pressure to a second pressure, and decrease the pressure. The blood pressure measurement is accordingly finished. The operation and analysis unit calculates an arteriosclerosis index based on a pulse waveform signal when the adjustable pressure unit maintains the pressure at the first pressure.
Claims20
A blood pressure measuring apparatus capable of estimating arteriosclerosis, the apparatus comprising:
- a cuff;
- an inflation unit pressurizing the cuff;
- a deflation unit depressurizing or discharging the cuff;
- a pressure sensor used for sensing at least one oscillometric waveform of pressure variation with the cuff;
- a signal record and storage unit storing at least one pulse waveform signal within the oscillometric waveform;
- and
- an operation and analysis unit used to control the inflation unit and the deflation unit to pressurize the cuff till a first pressure and maintain at the first pressure for a specified interval and then pressurize the cuff to a second pressure, and depressurize or discharge the cuff so as to complete blood pressure measurement;
- wherein the operation and analysis unit calculates an arteriosclerosis index based on a plurality of characteristic values derived from the pulse waveform signal when the cuff is maintained at the first pressure;
- wherein the plurality of characteristic values comprise a first magnitude value of a first peak at an incident component of the pulse waveform signal and a second magnitude value of a second peak at a reflective component of the pulse waveform signal.
A method for estimating arteriosclerosis using a blood pressure measuring apparatus, wherein the blood pressure measuring apparatus comprises:
- a cuff;
- an inflation unit pressurizing the cuff;
- a deflation unit depressurizing or discharging the cuff;
- a pressure sensor used for sensing at least one oscillometric waveform of pressure variation with the cuff;
- a signal record and storage unit storing at least one pulse waveform signal within the oscillometric waveform;
- and
- an operation and analysis unit used to control the inflation unit and the deflation unit;
- the method comprises:
- inflating the cuff till the pressure of the cuff reaches a first pressure;
- maintaining the pressure of the cuff at the first pressure for a specified interval;
- capturing a pulse waveform for at least one heartbeat period during the specified interval to obtain the pulse waveform signal;
- deriving a plurality of characteristic values from the pulse waveform signal, the plurality of characteristic values comprising a first magnitude value of a first peak at an incident component of the pulse waveform signal and a second magnitude value of a second peak at a reflective component of the pulse waveform signal;
- and
- calculating an arteriosclerosis index based on the plurality of characteristic values.
Dependencies are inferred from the claim text.