Method and apparatus for determining blood pressure using pressure pulse duty cycle
AssigneeGE Medical Systems Information Technologies, Inc.
InventorRobert Stanley Kulik
Life of this patent
Estimating the term…
Abstract
A method of processing oscillometric blood pressure pulse data taken from a subject is disclosed. In an exemplary embodiment, the method includes determining a pressure pulse period of a cardiac cycle of the subject and identifying a duration of a pressure pulse detected within the pressure pulse period. Then, a duty cycle of the pressure pulse is calculated with respect to the pressure pulse period, wherein the calculated duty cycle is used to determine selected blood pressure parameters.
Claims26
A method of processing oscillometric blood pressure pulse data taken from a subject, the method comprising:
- determining a pressure pulse period of a cardiac cycle of the subject;
- identifying a duration of a pressure pulse detected within said pressure pulse period;
- and
- calculating a duty cycle of said pressure pulse with respect to said pressure pulse period;
- wherein said calculated duty cycle is used to determine selected blood pressure parameters.
A method of measuring the blood pressure of a subject, the method comprising:
- inflating a cuff placed over an arm of the subject, thereby applying a plurality of pressure levels thereto;
- at each pressure level, obtaining pulse pressure data caused by blood pressure pulses within the arm of the subject;
- and
- calculating, from said pulse pressure data, a duty cycle for a pressure pulse period;
- wherein said duty cycle is used to determine selected blood pressure parameters.
An apparatus for obtaining the blood pressure of a subject, the apparatus comprising:
- an inflatable and deflatable pressure cuff for placement around an arm of the subject;
- an inflating apparatus for inflating and pressurizing said pressure cuff;
- a deflating apparatus for selectively relieving pressure from said cuff;
- a pressure sensing device coupled to said cuff for sensing pulse pressure data caused by blood pressure pulses within the arm of the subject;
- and
- a microprocessor for processing said pulse pressure data by determining duty cycle information for a pressure pulse period at a given cuff pressure level;
- wherein said duty cycle information is used to determine selected blood pressure parameters.
A storage medium, comprising:
- a machine readable computer program code for processing oscillometric blood pressure pulse data taken from a subject;
- and
- instructions for causing a computer to implement a method, the method further comprising:
- determining a pressure pulse period of a cardiac cycle of the subject;
- identifying a duration of a pressure pulse detected within said pressure pulse period;
- and
- calculating a duty cycle of said pressure pulse with respect to said pressure pulse period;
- wherein said calculated duty cycle is used to determine selected blood pressure parameters.
A computer data signal, comprising:
- code configured to cause a processor to implement a method for processing oscillometric blood pressure pulse data taken from a subject, the method further comprising:
- determining a pressure pulse period of a cardiac cycle of the subject;
- identifying a duration of a pressure pulse detected within said pressure pulse period;
- and
- calculating a duty cycle of said pressure pulse with respect to said pressure pulse period;
- wherein said calculated duty cycle is used to determine selected blood pressure parameters.
Dependencies are inferred from the claim text.