US 11,931,056 B2
Retractable elevator instrument shaver blade with flush/lavage features
Canh S. Ly, Cordova, TN (US); and Joey Magno, Cordova, TN (US)
Assigned to Gyrus ACMI, Inc., Westborough, MA (US)
Filed by GYRUS ACMI, INC., Southborough, MA (US)
Filed on Sep. 11, 2020, as Appl. No. 17/017,936.
Claims priority of provisional application 62/969,293, filed on Feb. 3, 2020.
Claims priority of provisional application 62/910,147, filed on Oct. 3, 2019.
Prior Publication US 2021/0100571 A1, Apr. 8, 2021
Int. Cl. A61B 17/32 (2006.01); A61B 17/24 (2006.01); A61M 3/02 (2006.01)
CPC A61B 17/24 (2013.01) [A61B 17/320016 (2013.01); A61M 3/0279 (2013.01); A61B 2217/007 (2013.01); A61M 2210/0681 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An endoscopic sinus surgery device comprising:
a lever operably;
an outer sheath operably coupled with the lever, the outer sheath including:
a distal end;
a proximal end;
a surgical elevator disposed at the distal end of the outer sheath, the surgical elevator having a surgical elevator edge; and
a hypotube extending along a length of the outer sheath to the distal end of the outer sheath, the hypotube having a hypotube access hole; and
a shaver blade assembly, the shaver blade assembly including:
an outer shaft partially disposed within the outer sheath;
an outer blade disposed at a distal end of the outer shaft;
an inner blade disposed within the outer blade, wherein the outer blade and the inner blade cooperate with each other to create a resection surface;
a stop disposed at the distal end of the outer shaft; and
an outer shaft access hole in a bottom surface of the outer shaft, the outer shaft access hole being proximate to the outer blade and the inner blade, wherein the lever is configured to move between a first position and a second position such that the outer sheath moves relative to the outer shaft, wherein, in the first position:
the surgical elevator edge abuts the outer shaft stop;
the outer shaft access hole aligns with the hypotube access hole; and
the distal end of the outer shaft extends further than the surgical elevator edge;
and wherein, in the second position, the surgical elevator edge is spaced apart from the outer shaft stop.