Patent ID: 11877779
Assignee: XTANT MEDICAL HOLDINGS, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A bone plate system comprising:
a bone plate body including a throughbore;
a bone screw having a head portion with a rotary drive structure and a threaded shank portion, the threaded shank portion configured to be advanced into the throughbore and driven into bone;
a slider slidably connected to the bone plate body to slide between a clearance position wherein the slider permits the bone screw head portion to be advanced into the throughbore and seated against the bone plate body and an interference position wherein the slider inhibits bone screw back out from the throughbore with the bone screw head portion seated against the bone plate body in the throughbore;
an elongate, resilient pin distinct from the slider, the resilient pin being bent and having a preload with the slider in the interference position such that the resilient pin engages the bone plate body with the slider in the interference position;
the slider having a surface configured to contact and further bend an intermediate portion of the resilient pin which further loads the resilient pin as the bone screw head portion shifts the slider from the interference position toward the clearance position in a first direction, the resilient pin configured to unload and urge the slider from the clearance position toward the interference position in a second direction opposite the first direction upon the bone screw head portion seating against the bone plate body in the throughbore; and
the resilient pin resists shifting of the slider in the second direction beyond the interference position to keep the slider in the interference position with the bone screw head portion seated against the bone plate body in the throughbore.