US 12,376,971 B2
Bone mill with an accessible milling element
Robin B. W. Babaris, Portage, MI (US); Aaron Hoffmann, Plainwell, MI (US); Clifford Edwin Lambarth, Portage, MI (US); Derek F. Nelson, Kalamazoo, MI (US); Steven M. Rolfsen, Jr., Kalamazoo, MI (US); Shammodip Roy, Wayne, NJ (US); James Walen, Portage, MI (US); and Jason James Wroblewski, Portage, MI (US)
Assigned to Stryker Corporation, Portage, MI (US)
Filed by Stryker Corporation, Kalamazoo, MI (US)
Filed on Dec. 29, 2022, as Appl. No. 18/147,840.
Application 18/147,840 is a continuation of application No. 16/616,866, granted, now 11,564,813, previously published as PCT/US2018/034700, filed on May 25, 2018.
Claims priority of provisional application 62/511,590, filed on May 26, 2017.
Prior Publication US 2023/0135274 A1, May 4, 2023
Int. Cl. A61F 2/46 (2006.01); A61B 17/16 (2006.01); A61B 17/00 (2006.01); A61B 90/00 (2016.01)
CPC A61F 2/4644 (2013.01) [A61B 17/1635 (2013.01); A61B 2017/00123 (2013.01); A61B 2090/0808 (2016.02); A61F 2002/4645 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A modular bone mill system for converting bone stock into bone chips, the system comprising:
a base module including a motor and a sensor; and
a milling module, the milling module comprising:
a shell adapted for releasable attachment to the base module, the shell having:
an inlet opening through which bone stock is introduced into the shell;
an outlet opening through which bone chips are discharged from the shell; and
a milling element disposed in the shell between the inlet opening and the outlet opening for converting bone stock into bone chips; and
a lid that is removably attached to a foundation, the lid including the inlet opening of the shell and a first detection component positioned to be detectable by the sensor in the base module, and the foundation being adapted for releasable attachment to the base module, the foundation including the outlet opening and a second detection component and a catch tray removably seated in the foundation adjacent the outlet opening to receive bone chips discharged therethrough;
wherein the base module is configured to selectively power the milling element of the milling module based on whether the sensor in the base module detects that the first and second detection components are arranged relative to each other indicating that the lid is correctly attached to the foundation, the catch tray is correctly seated in the foundation, and the foundation is correctly attached to the base module;
wherein the lid includes a domed, disc shaped cap which defines an inner surface and a side wall;
wherein the cap includes one or more tabs that project radially outwardly from a cylindrical side wall of the cap, with the one or more tabs positioned and dimensioned so that when cap is positioned in an opening in the foundation and rotated, each tab rotates into a respective notch in the foundation to become integral with the notch and correctly attach the lid to the foundation; and
wherein one of the one or more tabs includes a toe having a magnet disposed therein and extending downwardly from one end of tab, wherein when the cap is positioned in an opening in the foundation and rotated to correctly attach the lid to the foundation, the toe moves into registration over an opening in the foundation when the lid is correctly attached to the foundation.