pH measuring balloon

Details pH measuring balloon pH measuring balloon

2006-02-14

2006-02-14

Winakur, Eric F. (Department: 3735)

Surgery

Diagnostic testing

Measuring or detecting nonradioactive constituent of body...

C600S317000, C600S342000

Reexamination Certificate

active

06999807

ABSTRACT:
The present invention relates to devices and methods for measuring the pH of blood in the vicinity of a vulnerable plaque. A balloon including an opto-electric device may be positioned proximate a vulnerable plaque. The balloon can be inflated to partially occlude blood flow enabling interaction between lipid laden blood and pH-sensitive material either within the balloon or on the wall(s) of the balloon. The selected pH-sensitive material is one whose optical properties change as a function of the pH of blood in the vasculature. An opto-electric device may be used for measuring the optical property and/or the change in the optical characteristics of the pH-sensitive compound.

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