US 11,653,966 B2
Targeted torque relief for torque-based instruments
Andrew W. Seykora, Portland, OR (US); Steven P. Horst, Dayton, OR (US); Mark B. Sommers, Beaverton, OR (US); Scott F. Mastroianni, Forest Grove, OR (US); Gregory D. Hutton, Beaverton, OR (US); and James G. Falkner, Jr., Beaverton, OR (US)
Assigned to Acumed LLC, Hillsboro, OR (US)
Filed by Acumed LLC, Hillsboro, OR (US)
Filed on Aug. 14, 2020, as Appl. No. 16/993,949.
Prior Publication US 2022/0047312 A1, Feb. 17, 2022
Int. Cl. A61B 17/88 (2006.01); A61B 17/16 (2006.01); A61B 17/86 (2006.01)
CPC A61B 17/8875 (2013.01) [A61B 17/1631 (2013.01); A61B 17/1633 (2013.01); A61B 17/162 (2013.01); A61B 17/8605 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A medical instrument component comprising:
an elongated shaft including a first portion, a second portion, and a third portion, wherein the first portion is between the second and third portions; and
a sleeve configured to be positioned at least some of the time around the first portion, wherein the sleeve is connected to the second portion or the third portion,
wherein the first portion is configured to have a lower torsional strength than the second and third portions such that the first portion experiences torsional failure at a lower torque force than the second or third portions,
wherein the sleeve is configured to be positioned around the first portion so that the sleeve covers the first portion, at least a proximal portion of the second portion, and at least a distal portion of the third portion, thereby reducing side-loading stress in the first portion,
wherein the second portion of the elongated shaft comprises a notch, wherein at least a portion of the notch overlaps with the sleeve, wherein the notch of the second portion is configured to receive a driver.