US 12,446,911 B2
Rotary oscillating/reciprocating surgical tool
Peter L Bono, Bingham Farms, MI (US); James D. Lark, West Bloomfield, MI (US); and John S. Scales, Ann Arbor, MI (US)
Assigned to Globus Medical, Inc., Audubon, PA (US)
Filed by GLOBUS MEDICAL, INC., Audubon, PA (US)
Filed on Nov. 7, 2023, as Appl. No. 18/503,661.
Application 18/503,661 is a continuation of application No. 17/230,528, filed on Apr. 14, 2021, granted, now 11,844,543.
Application 17/230,528 is a continuation of application No. 16/168,011, filed on Oct. 23, 2018, granted, now 11,000,306, issued on May 11, 2021.
Claims priority of provisional application 62/575,775, filed on Oct. 23, 2017.
Prior Publication US 2024/0074780 A1, Mar. 7, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/32 (2006.01); A61B 17/16 (2006.01); A61B 17/00 (2006.01)
CPC A61B 17/32002 (2013.01) [A61B 17/1624 (2013.01); A61B 17/1628 (2013.01); A61B 17/1631 (2013.01); A61B 17/1671 (2013.01); A61B 2017/00398 (2013.01); A61B 2017/00477 (2013.01); A61B 2017/00734 (2013.01); A61B 17/1626 (2013.01); A61B 2017/320028 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A surgical tool having a rotary oscillating cutter comprising:
a handle;
a motor associated with said handle;
a cutter shaft having a cutter on a distal end thereof, and
a transmission operably coupled to the motor, the transmission having a first driver, coupled to the motor, and a second driver coupled to the first driver to simultaneously effect reciprocating motion of the cutter shaft while the cutter shaft is oscillating,
wherein the first driver includes a curved gear rack which oscillates along a curved path during operation of the motor,
wherein the first driver includes a crank assembly coupled to the motor and a follower assembly operably associated with the crank assembly for oscillating the curved gear rack, the second driver includes a gear mounted to the cutter shaft and meshed with the curved gear rack to effect oscillating rotation of the cutter shaft,
wherein the second driver includes a helical bearing associated with the cutter shaft and operable to effect the reciprocation of the cutter shaft in response to rotary oscillation of the cutter shaft effected by the first driver.