Integrated pressure and volume measurement methods and apparatus
AssigneeUSCOM Pty Ltd.
InventorRobert Phillips
Life of this patent
Estimating the term…
Abstract
An apparatus for measuring pressure volume loop parameters of a patient (10), the apparatus comprising: an intra cardiac blood flow measurement device (11) for producing at least a first output indicative of the blood flow of a patient (10); a pressure sensor means (14) producing at least a second output indicative of the blood flow pressure of a patient (10); and a processing element (12) for combining at least the first and second outputs to produce at least one third output indicative of the operation of the pressure volume loop of the patient (10).
Claims10
An apparatus for measuring pressure volume loop parameters of a patient, said apparatus comprising:
- an intra cardiac blood flow measurement device for producing at least a first output indicative of the blood flow of a patient;
- a pressure sensor means producing at least a second output indicative of the blood flow pressure of a patient;
- and
- a processing element for combining at least said first and second outputs to produce at least one third output indicative of the operation of the pressure volume loop of the patient.
A method of measuring pressure volume loop parameters of a patient comprising the steps of:
- obtaining at least one measure of blood flow within the heart of a patient utilising CW Doppler methods;
- obtaining at least one measure of blood flow pressure within the vessels of the patient;
- combining the measures of step (a) and step (b) to produce said pressure volume loop parameters,
A method of creating a pressure volume loop parameter index comprising the steps of:
- (a) obtaining measures of blood flow within the heart of a patient utilising CW Doppler methods;
- (b) obtaining at least one measure of blood flow pressure within the vessels of the patient;
- (c) combining the measures of step (a) and step (b) to produce said pressure volume loop parameters;
- (d) repeating the step (c) for a plurality of patients to obtain a set of calculations;
- (e) processing said set of calculations to obtain a statistically averaged index across a population.
A method of measuring pressure volume loop parameters of a patient comprising the steps of:
- (a) utilising CW Doppler methods to obtain at least one measure of blood flow within vessels in a first predetermined volume of the body of a patient;
- (b) obtaining at least one measure of blood flow pressure within the vessels of said first predetermined volume of the body of the patient;
- (c) combining the measures of step (a) and step (b) to produce said pressure volume loop parameters for blood flow within said vessels.
(canceled)
Dependencies are inferred from the claim text.