INTRAVASCULAR PRESSURE SENSOR CALIBRATION

• US 20140276139A1
• Filed: 03/13/2014
• Published: 09/18/2014
• Est. Priority Date: 03/13/2013
• Status: Active Grant

• Current Assignee: Volcano Corporation (Koninklijke Philips N.V.)
• Original Assignee: Volcano Corporation (Koninklijke Philips N.V.)
• Inventors: Burkett, David H., Meyer, Douglas
• Granted Patent: US 11,026,591 B2
• Time in Patent Office: Days
• US Class Current: 600/486
• CPC Class Codes: A61B 2560/0223 of calibration, e.g. protocols for calibrating sensors
• CPC Class Codes: A61B 5/02156 Calibration means
• CPC Class Codes: A61B 5/6851 Guide wires
• CPC Class Codes: A61B 5/6852 Catheters

Abstract

The invention is a method for calibrating an intravascular pressure sensor at the point of use. By using data from a secondary pressure measurement device, e.g., an automated aortic pressure monitor, the pressure sensor can be easily calibrated over a range of temperatures and pressures relevant to the patient. Accordingly, an intravascular pressure sensor can be calibrated without undergoing a factory calibration. Additionally, in the event that the calibration is lost, the sensor can be recalibrated.

Claims

1. A method of calibrating an intravascular pressure sensor comprising:

providing an intravascular device comprising a pressure sensor, said intravascular device being operatively connected to a controller;

providing pressure data to the controller from a pressure monitor that is monitoring a vascular pressure of a patient;

inserting the intravascular pressure sensor into the vasculature of the patient; and

causing the controller to calibrate a reading from the pressure sensor with the pressure data from the pressure monitor.

2. The method of claim 1, wherein the intravascular device is a guidewire.

3. The method of claim 1, wherein the intravascular device is a catheter.

4. The method of claim 1, wherein the pressure monitor is an aortic pressure monitor.

5. The method of claim 1, wherein the pressure data comprises a plurality of high pressure and low pressure measurements.

6. The method of claim 5, wherein calibrating comprises setting a high and a low reading from the pressure sensor to be equal to an average of the plurality of high pressure and low pressure measurements, respectively.

7. The method of claim 1, wherein the vasculature of the patient is selected from a brachial artery and a femoral artery.

8. The method of claim 1, wherein the causing the controller to calibrate a reading comprises pushing a button, pressing a touch screen, clicking a mouse, or stepping on a pedal.

9. The method of claim 1, wherein the causing the controller to calibrate a reading comprises instructing a person to push a button, press a touch screen, click a mouse, or step on a pedal.