Aiming on Plate
A bone fixation device includes an aiming guide extending from a first end to a second end, the aiming guide having a plurality of aiming holes, each aiming hole extending through the aiming guide from a proximal face to a distal face along a corresponding aiming hole axis and a bone implant having a proximal face facing the aiming guide and a distal face which faces a target portion of bone, the implant including a plurality of implant holes each extending through the implant from the proximal face to the distal face, an implant hole axis of each of the implant holes being aligned with the aiming hole axis of a corresponding one of the aiming holes. A first connecting bar is integrally formed with the aiming guide and bone implant to space the distal face of the aiming guide from the proximal face of the implant.
1 . A bone fixation device, comprising a bone implant integrally formed with an aiming guide, the aiming guide being spaced apart from the bone implant by a first connecting bar extending therebetween.
2 . The bone fixation device of claim 1 , further comprising a second connecting bar connecting the aiming guide to the implant.
3 . The bone fixation device of claim 1 , wherein the bone implant includes a plurality of implant holes, each of the implant holes being configured to receive a bone fixation element to couple the bone implant to a target portion of the bone and wherein the aiming guide comprises a plurality of aiming holes, each of the aiming holes being aligned with a corresponding one of the implant holes so that a drill guide inserted through a first one of the aiming holes along a first aiming hole axis of the first aiming hole is aligned with a first implant hole axis of a corresponding first one of the implant holes along which a first bone fixation element is to be inserted through the implant into the target portion of bone.
4 . The bone fixation device of claim 3 , wherein a second one of the aiming holes extends through the aiming guide from the proximal face to the distal face along a second aiming hole axis aligned with a second implant hole axis along which a bone fixation element is to be inserted through a second one of the implant holes into the target portion of bone.
5 . The bone fixation device of claim 1 , wherein the first connecting bar is positioned so that, when the aiming guide and implant are in a desired position over the target portion of bone, the first connecting bar is accessible to separate the aiming guide from the bone implant.
6 . A bone fixation system, comprising:
an aiming guide extending from a first end to a second end, the aiming guide having a plurality of aiming holes, each aiming hole extending through the aiming guide from a proximal face to a distal face thereof along a corresponding aiming hole axis;
a bone implant extending from a third end to a fourth end and having a proximal face facing the aiming guide and a distal face which, when in a desired position, faces a target portion of bone to which the implant is to be coupled, the implant including a plurality of implant holes each extending through the implant from the proximal face to the distal face thereof along a corresponding implant hole axis, the implant hole axis of each of the implant holes being aligned with the aiming hole axis of a corresponding one of the aiming holes; and
a first connecting bar integrally formed with the aiming guide and bone implant to space the distal face of the aiming guide from the proximal face of the implant.
7 . The bone fixation system of claim 7 , further comprising a second connecting bar spacing the distal face of the aiming guide from the proximal face of the implant.
8 . A method for bone fixation, comprising the steps of:
inserting to a desired position over target portion of bone in a living body a bone fixation device comprising:
an aiming guide extending from a first end to a second end, the aiming guide having a plurality of aiming holes each extending through the aiming guide from a proximal face to a distal face of the aiming guide to a distal face thereof along a corresponding aiming hole axis;
a bone implant extending from a third end to a fourth end and having a proximal face facing the distal face of the aiming guide and a distal face which, when in a desired position, faces a target portion of bone to which the implant is to be coupled, the implant including a plurality of implant holes each extending through the implant from the proximal face to the distal face thereof along a an implant hole axis aligned with the aiming hole axis of a corresponding one of the aiming holes; and
a first connecting bar spacing the distal face of the aiming guide from the proximal face of the implant;
fixing the bone implant to the bone by inserting a bone fixation element into a target portion of bone via a first one of the implant holes; and
disconnecting the first connecting bar from the bone implant at a location substantially flush with the proximal face of the bone implant to separate the aiming guide from the implant.
9 . The method according to claim 8 , further comprising the step of removing the aiming guide and first connecting bar from the body.
10 . The method according to claim 8 , wherein the step of fixing further comprises:
inserting a drill guide through the first aiming guide hole into the first implant hole;
inserting a drill through the drill guide to drill a bore into the bone along the first implant hole axis; and
inserting a bone fixation element into the bore to secure the bone implant to the bone.
11 . The method according to claim 8 , wherein the step of disconnecting further comprises clipping with a clipping device the first connecting bar at a location substantially flush with the proximal face of the bone implant to separate the aiming guide from the bone implant.
12 . A method for manufacturing a bone fixation device, comprising the steps of integrally forming a bone fixation device including a bone implant, an aiming guide and a connecting bar connecting the bone implant to the aiming guide.
13 . The method of claim 12 , wherein the bone fixation device is formed by one or more of milling, laser sintering, molding, casting or welding together two separately formed components.
14 . The method of claim 12 , wherein the bone fixation device is milled from a single block of material.
15 . The method of claim 14 , wherein the block comprises a plurality of individual layers of material.
16 . The method of claim 12 , further comprising the step of milling bone implant holes in the bone implant.
17 . The method of claim 16 , further comprising the step of milling a plurality of aiming holes in the aiming guide, an aiming hole axis of each of the aiming holes being aligned with an implant hole axis of a corresponding one of the implant holes to guide bone fixation elements inserted through the aiming holes into the implant holes to extend therethrough into a target portion of bone.