US 9,808,232 B2
Dilation system
Stephen Heiman, Exton, PA (US); Dustin Harvey, Pottstown, PA (US); Corbett W. Stone, San Diego, CA (US); Kabir Gambhir, San Diego, CA (US); Timothy Anderson, Richmond, RI (US); Benjamin Arnold, San Diego, CA (US); Robert Bishop, West Chester, PA (US); and Paul S. Maguire, Hope Valley, RI (US)
Assigned to DePuy Synthes Products, Inc., Raynham, MA (US)
Appl. No. 14/355,707
Filed by DEPUY SYNTHES PRODUCTS, INC., Raynham, MA (US)
PCT Filed Nov. 1, 2012, PCT No. PCT/US2012/063061
§ 371(c)(1), (2) Date May 1, 2014,
PCT Pub. No. WO2013/067179, PCT Pub. Date May 10, 2013.
Claims priority of provisional application 61/554,397, filed on Nov. 1, 2011.
Prior Publication US 2014/0303666 A1, Oct. 9, 2014
Int. Cl. A61B 17/02 (2006.01); A61B 5/04 (2006.01); A61B 17/34 (2006.01); A61B 17/00 (2006.01)
CPC A61B 17/0218 (2013.01) [A61B 5/04001 (2013.01); A61B 17/025 (2013.01); A61B 17/3439 (2013.01); A61B 17/3468 (2013.01); A61B 2017/00022 (2013.01); A61B 2017/0256 (2013.01); A61B 2017/0262 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A dilation system, comprising:
a first dilator having an outer surface, a proximal end, a tapered distal end, and a bore extending from the proximal end to the tapered distal end, the first dilator having a first guide and a second guide formed on the proximal end thereof, the bore sized to receive a stimulating probe;
a second dilator having a proximal end, a tapered distal end, an intermediate section positioned between the proximal end of the second dilator and the tapered distal end of the second dilator, and a generally C-shaped transverse cross section with an outer surface and an inner surface, the inner surface of the second dilator at the tapered distal end of the second dilator being sized and configured to be matingly received over the outer surface of the first dilator at the tapered distal end of the first dilator, the inner surface of the second dilator being configured along at least a portion of the intermediate section of the second dilator to be laterally inserted into engagement with the first guide of the first dilator, and the inner surface of the second dilator being configured along the proximal end of the second dilator to engage with the first guide of the first dilator in a way that the second dilator is slidably retained on the first dilator as the second dilator is slid along the first dilator from the proximal end of the first dilator toward the distal end of the first dilator; and
a third dilator having a proximal end, a tapered distal end, an intermediate section positioned between the proximal end of the third dilator and the tapered distal end of the third dilator, and generally C-shaped transverse cross section with an outer surface and an inner surface, the inner surface of the third dilator at the tapered distal end of the third dilator being sized and configured to be matingly received over the outer surface of the first dilator at the tapered distal end of the first dilator, the inner surface of the third dilator being configured along at least a portion of the intermediate section of the third dilator to be laterally inserted into engagement with the second guide of the first dilator, and the inner surface of the third dilator being configured along the proximal end of the third dilator to engage with the second guide of the first dilator in a way that the third dilator is slidably retained on the first dilator as the third dilator is slid along the first dilator from the proximal end of the first dilator toward the distal end of the first dilator.