Patent ID: 11903847
Assignee: ZIMMER BIOMET SPINE, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 8:
9. A implant sizing system comprising:
an instrument handle including an elongate shaft extending from a distal end; and
a plurality of pressure sensitive trial implants couplable to a distal end of the elongate shaft, each pressure sensitive trial implant of the plurality of pressure sensitive trial implants corresponding to a predetermined size for an implant, each pressure sensitive trial implant of the plurality of pressure sensitive trial implants having a non-adjustable thickness between a superior end plate exterior surface and a separate inferior end plate exterior surface, each pressure sensitive trial implant of the plurality of pressure sensitive trial implants including one or more lateral side surfaces between the superior end plate exterior surface and the inferior end plate exterior surface,
wherein at least one of the superior end plate exterior surface and the inferior end plate exterior surface of each pressure sensitive trial implant is covered in a pressure sensitive film, wherein the pressure sensitive film is further disposed on at least a portion of the one or more lateral side surfaces,
wherein the pressure sensitive film is configured to change color in localized areas in response to a pressure or force applied to the pressure sensitive trial implant, wherein the pressure sensitive film is operable to indicate whether a predetermined target pressure is achieved following contact of a first end plate of a first vertebral body to the superior end plate exterior surface, and
further following contact of a second end plate of a second vertebral body to the inferior end plate exterior surface, wherein the predetermined target pressure corresponds to the predetermined size for the implant.