US 11,723,665 B2
Spline crash correction with motor oscillation
Anthony Sgroi, Jr., Wallingford, CT (US); and Justin Williams, Southbury, CT (US)
Assigned to Covidien LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on May 10, 2022, as Appl. No. 17/740,678.
Application 17/740,678 is a continuation of application No. 16/793,110, filed on Feb. 18, 2020, granted, now 11,324,509, issued on May 10, 2022.
Claims priority of provisional application 62/825,191, filed on Mar. 28, 2019.
Prior Publication US 2022/0265275 A1, Aug. 25, 2022
Int. Cl. A61B 17/115 (2006.01); A61B 90/00 (2016.01); A61B 17/00 (2006.01); A61B 17/072 (2006.01)
CPC A61B 17/1155 (2013.01) [A61B 2017/00398 (2013.01); A61B 2017/00734 (2013.01); A61B 2017/07264 (2013.01); A61B 2017/07271 (2013.01); A61B 2090/066 (2016.02); A61B 2562/0261 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for obviating spline crash in a surgical stapler utilizing a motor of the surgical stapler, the method comprising:
during approximation of an anvil assembly of the surgical stapler and a shell assembly of the surgical stapler, a processing unit detecting an impact of an anvil spline of the anvil assembly with a shell spline of the shell assembly of the surgical stapler;
then, oscillating an anvil retainer of the surgical stapler in a longitudinal direction between extension and retraction with the motor such that an anvil of the surgical stapler moves towards and away from the shell assembly of the surgical stapler in a first oscillation pattern;
oscillating the anvil retainer in the longitudinal direction between extension and retraction such that the anvil moves towards and away from the shell assembly in a second oscillation pattern after the first oscillation pattern; and
retracting the anvil retainer until the anvil is in a clamped position relative to the shell assembly after the second oscillation pattern.