US 11,883,078 B2
Joint fusion implant and methods
Brian Scott Schumacher, Orlando, FL (US); Nicholas Slater, Chandler, AZ (US); and William W. Cross, III, Rochester, MN (US)
Assigned to IMDS LLC, Providence, UT (US); and Mayo Foundation for Medical Education and Research, Rochester, MN (US)
Filed by IMDS LLC, Providence, UT (US); and Mayo Foundation for Medical Education and Research, Rochester, MN (US)
Filed on Sep. 13, 2021, as Appl. No. 17/473,997.
Application 17/473,997 is a continuation of application No. 16/528,591, filed on Jul. 31, 2019, granted, now 11,129,649.
Application 16/528,591 is a continuation of application No. 15/420,849, filed on Jan. 31, 2017, granted, now 10,413,332, issued on Sep. 17, 2019.
Application 15/420,849 is a continuation in part of application No. 15/137,848, filed on Apr. 25, 2016, granted, now 9,833,321, issued on Aug. 25, 2020.
Application 15/137,848 is a continuation in part of application No. 15/137,804, filed on Apr. 25, 2016, granted, now 10,751,071, issued on Dec. 5, 2017.
Prior Publication US 2021/0401472 A1, Dec. 30, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/70 (2006.01); A61B 17/88 (2006.01); A61B 17/86 (2006.01); A61B 17/16 (2006.01); A61B 17/00 (2006.01)
CPC A61B 17/7055 (2013.01) [A61B 17/1617 (2013.01); A61B 17/1671 (2013.01); A61B 17/86 (2013.01); A61B 17/863 (2013.01); A61B 17/864 (2013.01); A61B 17/8625 (2013.01); A61B 17/8695 (2013.01); A61B 17/8811 (2013.01); A61B 2017/0046 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method for compressing a joint between a first bone portion and a second bone portion, wherein a cavity is located within the joint between the first bone portion and the second bone portion, the method comprising:
positioning an implant proximate the joint, the implant comprising a screw member having a screw head and a screw body projecting distally from the screw head along a longitudinal axis to a screw distal end, the screw body comprising a non-threaded lag zone and a threaded engagement zone; and a washer member having a proximal side and a distal side, wherein the screw head is received in the washer member; wherein the implant further comprises a fusion zone having a length which is measured from the distal side of the washer member to a proximal end of the screw engagement zone, wherein the length of the implant fusion zone ranges from about 10 mm to about 37 mm;
inserting the screw body engagement zone through the first bone portion and into the cavity;
engaging the screw body engagement zone with the second bone portion;
positioning at least a portion of the lag zone within the cavity;
rotating the screw member to compress the joint; and
angling the washer member with respect to the screw member to permit maximum surface contact of the distal side of the washer member with the first bone portion.