US 12,329,416 B2
Reamer instruments and related methods
Eric Biester, Barrington, RI (US); Cory Emil, Milton, MA (US); Michael Sorrenti, Middleboro, MA (US); Richard W. Fournier, New Bedford, MA (US); and Ralph Solitario, Pocasset, MA (US)
Assigned to Medos International Sàrl, Le Locle (CH)
Filed by Medos International Sarl, Le Locle (CH)
Filed on Mar. 24, 2023, as Appl. No. 18/126,253.
Application 18/126,253 is a continuation of application No. 17/069,626, filed on Oct. 13, 2020, granted, now 11,638,596.
Application 17/069,626 is a continuation of application No. 16/164,532, filed on Oct. 18, 2018, granted, now 10,835,289, issued on Nov. 17, 2020.
Prior Publication US 2023/0248394 A1, Aug. 10, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/68 (2006.01); A61B 17/16 (2006.01); A61B 17/70 (2006.01)
CPC A61B 17/686 (2013.01) [A61B 17/1635 (2013.01); A61B 17/1671 (2013.01); A61B 17/7037 (2013.01); A61B 17/7076 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A surgical instrument, comprising:
an outer shaft having a cutting element at a distal end thereof and a central passage extending proximally from the distal end;
an inner shaft disposed within the central passage of the outer shaft, the inner shaft being configured to move longitudinally relative to the outer shaft as the cutting element is used to remove bone from around an implanted bone anchor shank; and
an indicator configured to generate user feedback when the inner shaft moves longitudinally relative to the outer shaft by a threshold distance;
wherein a distal end of the inner shaft includes a bearing surface configured to contact and slide across a proximal surface of the implanted bone anchor shank as the instrument is rotated axially and/or polyaxially articulated relative to the shank.