Method and systems for correcting for arterial compliance in a blood pressure assessment
First Claim
1. A system for monitoring blood pressure of a subject comprising:
- a primary system for determining a first blood pressure; and
a corrective system comprising;
a cuff configured to be operated in
1) an inflation phase to at least partially occlude an artery of the subject and
2) a deflation phase;
a sensor array configured to A) receive an inflation phase input signal associated with the at least partially occluded artery, B) generate an inflation phase output signal based on the received inflation phase signal, C) receive a deflation phase input signal associated with the artery, and D) generate a deflation phase output signal based on the received deflation phase signal; and
a processor configured to a) receive the inflation phase output signal and determine therefrom first and second output values, b) receive the deflation phase output signal and determine therefrom third and fourth output values, and c) determine a correction applicable to the first blood pressure, the correction being a function of the first, second, third and fourth output values.
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0 Petitions
Accused Products
Abstract
A system for monitoring blood pressure of a subject includes a primary system for determining a first blood pressure and a corrective system. The corrective system includes a cuff configured to be operated in an inflation phase and a deflation phase, a sensor array which produces inflation and deflation phase output signals, and a processor. The processor is configured to a) determine first and second output values from the inflation phase output signal and b) determine third and fourth output values from the deflation phase output signal. The processor is also configured to determine a correction applicable to the first blood pressure. The correction is a function of the first, second, third and fourth output values.
81 Citations
32 Claims
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1. A system for monitoring blood pressure of a subject comprising:
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a primary system for determining a first blood pressure; and a corrective system comprising; a cuff configured to be operated in
1) an inflation phase to at least partially occlude an artery of the subject and
2) a deflation phase;a sensor array configured to A) receive an inflation phase input signal associated with the at least partially occluded artery, B) generate an inflation phase output signal based on the received inflation phase signal, C) receive a deflation phase input signal associated with the artery, and D) generate a deflation phase output signal based on the received deflation phase signal; and a processor configured to a) receive the inflation phase output signal and determine therefrom first and second output values, b) receive the deflation phase output signal and determine therefrom third and fourth output values, and c) determine a correction applicable to the first blood pressure, the correction being a function of the first, second, third and fourth output values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A system for correcting a first blood pressure value of a subject comprising:
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a cuff configured to be operated in
1) an inflation phase to at least partially occlude an artery of the subject and
2) a deflation phase;a sensor array configured to A) receive an inflation phase input signal associated with the at least partially occluded artery, B) generate an inflation phase output signal based on the received inflation phase signal, C) receive a deflation phase signal associated with the artery, and D) generate a deflation phase output signal based on the received deflation phase signal; and a processor configured to a) receive the inflation phase output signal and determine therefrom first and second output values, b) receive the deflation phase output signal and determine therefrom third and fourth output values, and c) determine a correction as a function of the first, second, third and fourth output values. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A method of determining a correction to the blood pressure of a subject comprising the steps of:
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applying compression to an artery of the subject, thereby generating an inflation phase output signal, the compression being sufficient to at least partially occlude the artery; determining, from the inflation phase output signal, a first intra-arterial pressure and a second intra-arterial pressure associated with a compression phase pulse envelope; releasing the compression applied to the artery thereby generating a deflation phase output signal; determining, from the deflation phase output signal, a third intra-arterial pressure and a fourth intra-arterial pressure associated with a decompression phase pulse envelope; establishing a correction as a function of the first, second, third, and fourth intra-arterial pressures. - View Dependent Claims (28, 29, 30, 31, 32)
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Specification