US 12,076,516 B1
Adjustable length telescoping dilator
Brendan James Carry, Danville, PA (US); Evan Gajkowski, Catawissa, PA (US); and Dominik Beer, Lewisburg, PA (US)
Assigned to CG Medical LLC, Danville, PA (US)
Filed by CG Medical LLC, Danville, PA (US)
Filed on Sep. 13, 2023, as Appl. No. 18/466,198.
Int. Cl. A61M 29/00 (2006.01); A61M 25/09 (2006.01)
CPC A61M 29/00 (2013.01) [A61M 25/09 (2013.01); A61M 2210/12 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for sequentially dilating a vessel, where a guidewire extends into the vessel through a tissue opening in a tissue surface, the method comprising:
advancing a dilator assembly over a portion of the guidewire that is exterior to the tissue opening;
positioning the dilator assembly over the guidewire and towards the tissue surface while the dilator assembly is in a compact configuration;
extending a first dilator segment from the dilator assembly;
advancing at least the first dilator segment into the tissue opening to dilate the vessel while the first dilator segment remains extended from the dilator assembly;
withdrawing the first dilator segment from the tissue opening and retracting the first dilator segment into the dilator assembly;
extending a second dilator segment from the dilator assembly, where the first dilator segment remains coupled to the second dilator segment and partially extends from the second dilator segment;
advancing the first dilator segment and the second dilator segment into the tissue opening to further sequentially dilate the vessel while the second dilator segment remains extended from the dilator assembly;
withdrawing the first dilator segment and the second dilator segment from the tissue opening and retracting the second dilator segment into the dilator assembly; and
withdrawing the dilator assembly from the guidewire.