US 11,666,431 B2
Overdrive prevention for expandable anchor
Mehmet Z. Sengun, Canton, MA (US); and Gregory R. Whittaker, Stoneham, MA (US)
Assigned to Medos International Sarl, Le Locle (CH)
Filed by Medos International Sàrl, Le Locle (CH)
Filed on Aug. 21, 2019, as Appl. No. 16/546,884.
Application 16/546,884 is a continuation of application No. 15/164,307, filed on May 25, 2016, granted, now 10,390,936.
Prior Publication US 2019/0374331 A1, Dec. 12, 2019
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 2/08 (2006.01); A61B 17/04 (2006.01); A61B 90/00 (2016.01)
CPC A61F 2/0811 (2013.01) [A61B 17/0401 (2013.01); A61B 2017/0403 (2013.01); A61B 2017/0409 (2013.01); A61B 2017/0412 (2013.01); A61B 2017/0424 (2013.01); A61B 2017/0425 (2013.01); A61B 2017/0464 (2013.01); A61B 2090/034 (2016.02); A61B 2090/035 (2016.02); A61F 2002/0835 (2013.01); A61F 2002/0858 (2013.01); A61F 2002/0888 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for implanting an anchor in bone, comprising:
rotating an inner shaft of an inserter tool relative to an outer shaft of the inserter tool to rotatably drive a threaded expander screw distally into a threaded inner lumen of a sheath coupled to the outer shaft and disposed within a bone hole, the expander screw causing the sheath to expand radially outward to engage bone, and the inner shaft having a vertical stop surface formed on a distal end thereof that engages a corresponding vertical stop surface formed on a proximal end of the expander screw to limit distal advancement of a distal drive tip of the inner shaft into a drive recess of the expander screw to a predetermined insertion depth such that over-insertion of the distal drive tip into the expander screw is prevented, each of the vertical stop surfaces having a height that is less than a thread pitch of the expander screw.