US 12,440,657 B2
Mechanical dilator
Kyle G. Thornley, Farmington, UT (US); Daniel B. Blanchard, Bountiful, UT (US); Joe Spataro, Cottonwood Heights, UT (US); Alexander Kraemer, Salt Lake City, UT (US); and Megan S. Scherich, Salt Lake City, UT (US)
Assigned to Bard Access Systems, Inc., Salt Lake City, UT (US)
Filed by Bard Access Systems, Inc., Salt Lake City, UT (US)
Filed on Nov. 12, 2021, as Appl. No. 17/525,774.
Claims priority of provisional application 63/113,719, filed on Nov. 13, 2020.
Prior Publication US 2022/0152368 A1, May 19, 2022
Int. Cl. A61M 29/00 (2006.01); A61M 25/09 (2006.01)
CPC A61M 29/00 (2013.01) [A61M 25/09 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A mechanical dilator, comprising:
a first arm coupled to a second arm by a fulcrum, the first arm and the second arm cooperatively defining a lock and stop mechanism configured to limit lateral movement of the first arm with respect to the second arm; and
a dilator body defining a proximal end and a distal end, the dilator body comprising:
a first side extending from the first arm;
a second side extending from the second arm; and
a straight channel bisecting the dilator body into the first side and the second side, the straight channel extending from the proximal end of the dilator body to the distal end of the dilator body,
wherein:
the fulcrum is configured to translate compressing lateral movement of the first arm relative to the second arm to expanding lateral movement of the first side relative to the second side,
the lock and stop mechanism defines a plurality of discrete locked positions of the first arm with respect to the second arm,
the plurality of discrete locked positions define discrete diameters of the straight channel that range from a diameter corresponding to a 12 French catheter to a diameter corresponding to a 17 French catheter, and
each discrete diameter corresponds to respective ones of a 12 French, a 13 French, a 14 French, a 15 French, a 16 French, and a 17 French catheter.