Patent ID: 9492644
Filing Date: 2016-11-15
CPC Classification: A61J,A61M

Claim Text:
1. A dilation device comprising: a tubular support comprising a proximal end and distal end; a balloon comprising a retention portion configured with the proximal end of the tubular support, an inflatable dilation portion proximal the retention portion, an inflatable stiffening portion proximal the inflatable dilation portion, and a flexible portion connecting the retention portion and the inflatable dilation portion, the retention portion comprising a larger cross-section than the inflatable dilation portion when inflated, the flexible portion having a smaller cross-section than the retention portion and the inflatable dilation portion; a catheter tube fitted over the stiffening portion, the stiffening portion abutting against an inside surface of the catheter tube via friction after the stiffening portion is inflated; and an inflation lumen configured through the balloon.