Calibration system and method for pressure monitoring
First Claim
1. A calibration system for pressure monitoring comprising:
- a sensor positioned at a sensor location on or in a patient'"'"'s body;
a first pressure transducer positioned at a reference location remote from the sensor location to receive a signal from the sensor and to generate a first pressure signal;
a calibration device positioned along a plane that is substantially coincident with a cavity of the patient to measure a reference pressure signal that represents a difference in pressure between the position of the calibration device and the reference location;
a second pressure transducer positioned at the reference location remote from the sensor location to receive the reference pressure signal from the calibration device and to generate a calibration pressure signal; and
an electronic device to produce an actual pressure signal using the first and calibration pressure signals.
1 Assignment
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Accused Products
Abstract
A calibration system for pressure monitoring including a sensor positioned at a sensor location on or in a patient'"'"'s body, a first pressure transducer positioned at a reference location remote from the sensor location to receive a signal from the sensor and to generate a first pressure signal, a calibration device positioned along a plane that is substantially coincident with a chamber or cavity (e.g., a heart chamber) of the patient to measure a reference pressure signal that represents a difference in pressure between the position of the calibration device and the reference location, a second pressure transducer positioned at the reference location remote from the sensor location to receive the reference pressure signal from the calibration device and to generate a calibration pressure signal, and an electronic device to produce an actual pressure signal using the first and calibration pressure signals.
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Citations
20 Claims
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1. A calibration system for pressure monitoring comprising:
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a sensor positioned at a sensor location on or in a patient'"'"'s body;
a first pressure transducer positioned at a reference location remote from the sensor location to receive a signal from the sensor and to generate a first pressure signal;
a calibration device positioned along a plane that is substantially coincident with a cavity of the patient to measure a reference pressure signal that represents a difference in pressure between the position of the calibration device and the reference location;
a second pressure transducer positioned at the reference location remote from the sensor location to receive the reference pressure signal from the calibration device and to generate a calibration pressure signal; and
an electronic device to produce an actual pressure signal using the first and calibration pressure signals. - View Dependent Claims (2, 3, 4, 5, 8, 9)
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6. The calibration system of claim I wherein the electronic device is a differential circuit.
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7. The calibration system of claim I wherein the electronic device is a processor.
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10. A calibration system for pressure monitoring comprising:
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a sensor positioned at a sensor location on or in a patient'"'"'s body;
a pressure transducer positioned at a reference location remote from the sensor location to receive a signal from the sensor and to generate a pressure signal;
a fluid column positioned adjacent to a patient'"'"'s heart to measure a reference pressure signal that represents a difference in pressure between the position of the fluid column and the reference location;
a calibration pressure transducer positioned at the reference location remote from the sensor location to receive the reference pressure signal from the fluid column and to generate a calibration pressure signal; and
an electronic device to produce an actual pressure signal using the pressure signal and the calibration pressure signal. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method of pressure monitoring comprising:
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receiving a signal from a sensor;
generating a pressure signal using the signal;
receiving a reference pressure signal from a calibration device;
generating a calibration pressure signal using the reference pressure signal; and
producing an actual pressure signal using the pressure signal and the calibration pressure signal. - View Dependent Claims (17, 18, 19, 20)
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Specification