Devices, Systems, and Methods and Associated Display Screens for Assessment of Vessels

• US 20150230713A1
• Filed: 02/20/2015
• Published: 08/20/2015
• Est. Priority Date: 02/20/2014
• Status: Active Grant

• Current Assignee: Philips Image Guided Therapy Corporation (Koninklijke Philips N.V.)
• Original Assignee: Volcano Corporation (Koninklijke Philips N.V.)
• Inventors: Merritt, Fergus, Mittal, Vaishali
• Granted Patent: US 9,974,443 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 5/02007 Evaluating blood vessel condition, e.g. elasticity, compliance
• CPC Class Codes: A61B 5/0215 by means inserted into the body catheters A61M25/00
• CPC Class Codes: A61B 5/02152 specially adapted for venous pressure
• CPC Class Codes: A61B 5/02158 provided with two or more sensor elements
• CPC Class Codes: A61B 5/7278 Artificial waveform generation or derivation, e.g. synthesising signals from measured signals A61B5/327 takes precedence
• CPC Class Codes: A61B 5/742 using visual displays A61B5/339 takes precedence
• CPC Class Codes: A61B 5/743 Displaying an image simultaneously with additional graphical information, e.g. symbols, charts, function plots
• CPC Class Codes: A61B 5/748 Selection of a region of interest, e.g. using a graphics tablet
• CPC Class Codes: G06T 11/206 Drawing of charts or graphs

Abstract

Devices, systems, and methods for visually depicting a vessel and evaluating treatment options are disclosed. The methods can include obtaining pressure measurements from first and second instruments positioned within a vessel of a patient while the second instrument is moved longitudinally through the vessel from a first position to a second position and the first instrument remains stationary within the vessel; and outputting a visual representation of the pressure measurements obtained by the first and second instruments on a display, the output visual representation including a graphical display of a pressure ratio of the obtained pressure measurements and at least a portion of a pressure waveform of the obtained pressure measurements identifying a diagnostic period utilized in calculating the pressure ratio.

Claims

1. A method of evaluating a vessel of a patient, comprising:

obtaining pressure measurements from first and second instruments positioned within a vessel of a patient while the second instrument is moved longitudinally through the vessel from a first position to a second position and the first instrument remains stationary within the vessel; and

outputting a screen display having visual representations of the pressure measurements obtained by the first and second instruments on a display, the screen display including;

a graphical display of a pressure ratio of the obtained pressure measurements; and

at least a portion of a pressure waveform of the obtained pressure measurements identifying a diagnostic period utilized in calculating the pressure ratio.

2. The method of claim 1, wherein the first position is distal of at least one stenosis of the vessel.

3. The method of claim 2, wherein the second position is proximal of the at least one stenosis of the vessel such that moving the second instrument longitudinally through the vessel comprises a pullback.

4. The method of claim 1, wherein the graphical display of the pressure ratio of the obtained pressure measurements includes a numerical value of the pressure ratio.

5. The method of claim 1, wherein the graphical display of the pressure ratio of the obtained pressure measurements includes a graph of the pressure ratio.

6. The method of claim 1, wherein the graphical display of the pressure ratio of the obtained pressure measurements includes a graph of a change in the pressure ratio.

7. The method of claim 1, wherein the graphical display of the pressure ratio of the obtained pressure measurements includes a graph having separate plots of the pressure measurements obtained with the first instrument and the pressure measurements obtained with the second instrument.

8. The method of claim 1, wherein the screen display further includes a graph of a difference in the pressure measurements obtained with the first instrument and the pressure measurements obtained with the second instrument.

9. The method of claim 1, wherein the graphical display of the pressure ratio of the obtained pressure measurements includes a numerical value of the pressure ratio.

10. The method of claim 9, wherein the screen display further includes a slider, wherein the numerical value of the pressure ratio displayed is updated based on the position of the slider.

11. The method of claim 10, wherein a first end of the slider corresponds to the second instrument being in the first position and a second end of the slider corresponds to the second instrument being in the second position.

12. The method of claim 1, wherein the screen display further includes a ruler showing a dimensional scale of the graphical display of the pressure ratio relative to the vessel length.

13. The method of claim 12, wherein the screen display further includes at least one zoom button, wherein a scale of the ruler automatically updates in response to selective actuation of the at least one zoom button.

14. The method of claim 13, wherein the dimensional scale of the graphical display of the pressure ratio relative to the vessel length automatically updates in response to selective actuation of the at least one zoom button.

15. The method of claim 1, wherein the at least a portion of the pressure waveform of the obtained pressure measurements visually accentuates the diagnostic period.

16. The method of claim 15, wherein the diagnostic period is displayed using a first color and the non-diagnostic period portions of the pressure waveform are displayed using a second color visually distinguishable from the first color.

17. The method of claim 15, wherein the non-diagnostic period portions of the pressure waveform are displayed in a faded color scale relative to the diagnostic period.

18. The method of claim 15, wherein the non-diagnostic period portions of the pressure waveform are not displayed.

19. A system for evaluating a vessel of a patient, comprising:

a first instrument sized and shaped for introduction into the vessel of the patient;

a second instrument sized and shaped for introduction into the vessel of the patient;

a processing system in communication with the first and second instruments, the processing unit configured to;

obtain pressure measurements from the first and second instruments while the second instrument is moved longitudinally through the vessel of the patient from a first position to a second position while the first instrument is maintained in a fixed longitudinal position with respect to the vessel; and

output a screen display having visual representations of the pressure measurements obtained by the first and second instruments on a display in communication with the processing system, the screen display including;

a graphical display of a pressure ratio of the obtained pressure measurements; and

at least a portion of a pressure waveform of the obtained pressure measurements identifying a diagnostic period utilized in calculating the pressure ratio.

20. The system of claim 19, wherein the first position is distal of at least one stenosis of the vessel and the second position is proximal of the at least one stenosis of the vessel.