US 11,925,359 B2
Rotary electric surgical hammer impact tool
Alexander Slocum, Bow, NH (US); and Nitin Goyal, Mclean, VA (US)
Assigned to Zimmer, Inc., Warsaw, IN (US)
Filed by Zimmer, Inc., Warsaw, IN (US)
Filed on Jan. 28, 2022, as Appl. No. 17/587,794.
Claims priority of provisional application 63/143,514, filed on Jan. 29, 2021.
Prior Publication US 2022/0240946 A1, Aug. 4, 2022
Int. Cl. A61B 17/16 (2006.01); A61B 17/00 (2006.01); A61B 90/50 (2016.01)
CPC A61B 17/1604 (2013.01) [A61B 17/1628 (2013.01); A61B 90/50 (2016.02); A61B 2017/00017 (2013.01); A61B 2560/0204 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A rotary electric surgical hammer impact tool comprising:
a tool body;
a motor located within the tool body;
a shaft operatively coupled to the motor;
a disk hammer element connected to the shaft, the disk hammer element including a radial impact projection; and
a tool holder element comprising a shaft configured to support an implement at one end, the shaft of the tool holder element comprising a C-shaped structure straddling the disk hammer element and including opposing forward and rearward impact faces that are spaced,
wherein the tool holder element is configured to move axially within the tool body when the implement is pressed against a work surface to bring the forward impact face into alignment to be engaged by the radial impact projection to impart forward impacts to the tool holder element, and
wherein the tool holder element is configured to move axially within the tool body when the tool is pulled away from the work surface to bring the rearward impact face into alignment to be engaged by the radial impact projection to impart rearward impacts to the tool holder element.