Non-invasive blood pressure monitor with improved performance
First Claim
1. A method of monitoring blood pressure in a patient, the method comprising the steps of:
- providing a continuous, non-invasive blood pressure (CNIBP) monitor operable to continuously estimate the blood pressure of the patient and generate a continuous blood pressure estimate;
calculating a target inflation pressure based upon the continuous blood pressure estimate from the CNIBP monitor;
positioning a blood pressure cuff on the patient;
inflating the blood pressure cuff to the target inflation pressure;
continuously decreasing the pressure in the blood pressure cuff while monitoring for oscillometric pulses in the blood pressure cuff; and
calculating the systolic pressure, mean arterial pressure and diastolic pressure based upon the oscillometric pulses detected during deflation of the blood pressure cuff.
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Abstract
A blood pressure measurement system that utilizes both a non-invasive blood pressure (NIBP) monitor having a blood pressure cuff and a continuous non-invasive blood pressure (CNIBP) monitor. During operation of the NIBP monitor, the blood pressure cuff is inflated to an initial inflation pressure greater than the systolic blood pressure for the patient being monitored. The CNIBP monitor calculates an estimated blood pressure that is supplied to the NIBP monitor. The NIBP monitor utilizes the continuous, estimated blood pressure to select a target inflation pressure for the blood pressure cuff. During operation of the NIBP monitor, the size of the pressure steps from the initial inflation pressure to a final pressure can be varied based upon the continuous blood pressure estimate from the NIBP monitor.
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Citations
22 Claims
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1. A method of monitoring blood pressure in a patient, the method comprising the steps of:
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providing a continuous, non-invasive blood pressure (CNIBP) monitor operable to continuously estimate the blood pressure of the patient and generate a continuous blood pressure estimate;
calculating a target inflation pressure based upon the continuous blood pressure estimate from the CNIBP monitor;
positioning a blood pressure cuff on the patient;
inflating the blood pressure cuff to the target inflation pressure;
continuously decreasing the pressure in the blood pressure cuff while monitoring for oscillometric pulses in the blood pressure cuff; and
calculating the systolic pressure, mean arterial pressure and diastolic pressure based upon the oscillometric pulses detected during deflation of the blood pressure cuff. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of enhancing the operation of a non-invasive blood pressure (NIBP) monitor having a blood pressure cuff selectively inflatable and deflatable to determine at least a systolic pressure, a mean arterial pressure and a diastolic pressure for a patient, the method comprising the steps of:
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providing a continuous non-invasive blood pressure (CNIBP) monitoring system operable to continuously estimate the blood pressure of the patient and generate a continuous blood pressure estimate;
calculating an initial target inflation pressure based upon the continuous blood pressure estimate;
inflating the blood pressure cuff to the target inflation pressure;
deflating the blood pressure cuff from the target inflation pressure to a final pressure;
monitoring for oscillometric pulses in the blood pressure cuff as the blood pressure cuff is deflated from the target inflation pressure to the final pressure; and
calculating and displaying the systolic pressure, mean arterial pressure and diastolic pressure based upon the oscillometric pulses. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A system for monitoring blood pressure in a patient, the system comprising:
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a central processor;
a non-invasive blood pressure monitor including a blood pressure cuff positionable on the patient, the blood pressure cuff being coupled to a supply of pressurized air such that the blood pressure cuff can be selectively inflated and deflated by the central processor;
a continuous non-invasive blood pressure (CNIBP) monitor positionable on the patient to continuously estimate the blood pressure of the patient and generate a continuous blood pressure estimate, wherein the central processor controls the inflation and deflation of the blood pressure cuff based upon the continuous blood pressure estimates. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification