Apparatus and methods for securing a bone implant

摘要

Apparatus and methods for securing a bone implant are provided. The implant may be an expandable implant. The implant may be a non-expandable implant. The implant may be for repairing a bone fracture. The implant may be secured to a bone by anchors. The implant may include anchor receiving features. The anchor receiving features may be configured to direct an anchor into cortical bone. The anchor receiving features may be configured to receive an anchor driven through cortical bone. The implant may include bone engaging members configured to engage cancellous bone. An implant may include different profiles. The different profiles may be configured to secure the implant. The profiles may be configured to support the bone. The implant may have different flexing properties configured to position the implant in the bone. The implant may be positioned to receive an anchor driven through an outside of the bone.

主权项

1. A lock for a bone implant, the implant comprising:
a proximal base and a distal base that define a longitudinal axis; and a web having a proximal end and a distal end, the proximal end fixed to the proximal base and the distal end fixed to the distal base, the web, after being inserted into a bone, urging radially away from the axis; the lock comprising:
a first threaded cannula that is fixed to the proximal base and substantially coaxial with the axis;a second threaded cannula that is fixed to the distal base, substantially coaxial with the axis and disposed apart from the first threaded cannula; anda screw that is configured to be advanced into the first threaded cannula after the web reaches an expanded state inside the bone, advanced along the axis to the second threaded cannula and advanced into the second threaded cannula without substantially changing a distance between the first threaded cannula and the second threaded cannula; wherein engagement of the screw with the first threaded cannula and the second threaded cannula locks the web in the expanded state.