Calibrating dilation catheter
First Claim
1. A catheter for dilating a partially occluded section of a blood vessel and for calibrating the internal diameter of the dilated section, said catheter comprising a flexible hollow shaft, laterally expansible and retractable balloon means carried by said shaft at the distal end thereof, and an enlarged and normally incompressible calibrator oval of a predetermined diameter carried by said shaft in adjacent relation to the proximal end of said balloon means for the calibration of the internal diameter of said occluded section after said section has been dilated by lateral expansion of said balloon means and said balloon means has been laterally retracted.
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Accused Products
Abstract
A catheter is provided with an inflatable-deflatable balloon element to radially enlarge a partially occluded artery lumen and the catheter is provided with a calibrator oval to internally gauge the enlarged lumen.
76 Citations
4 Claims
- 1. A catheter for dilating a partially occluded section of a blood vessel and for calibrating the internal diameter of the dilated section, said catheter comprising a flexible hollow shaft, laterally expansible and retractable balloon means carried by said shaft at the distal end thereof, and an enlarged and normally incompressible calibrator oval of a predetermined diameter carried by said shaft in adjacent relation to the proximal end of said balloon means for the calibration of the internal diameter of said occluded section after said section has been dilated by lateral expansion of said balloon means and said balloon means has been laterally retracted.
Specification