Advanced bone marker and custom implants
View Patent ↗A method for replacing a portion of a target bone in a living body includes the steps of attaching one or more first markers to a target bone, establishing a medical three-dimensional representation of the target bone, performing a virtual resection of a resection portion, the virtual resection constructing a three-dimensional representation of the resection portion and a three-dimensional representation of the remaining target bone including cutting edges, providing a virtual pattern of the resection portion, obtaining an implant or graft portion for replacing the resection portion of the target bone by using the virtual pattern of the resection portion, resecting the resection portion from the target bone according to the virtual resection using the first reference system of coordinates and coupling the implant or graft portion to the target bone in a position substantially matching a position of the resection portion before the actual resection.
1. A system for replacing a portion of a target bone in a living body comprising:
a display displaying three-dimensional representation of the target bone including a three-dimensional first reference system of coordinates defined by a first marker attached to the target bone, the three-dimensional representation of the target bone defining a resection portion of the target bone to be resected therefrom; and
a control module processing the three-dimensional representation of the target bone and based on input received via a user interface, to compare the three-dimensional representation of the target bone with reference data including three-dimensional representations of a plurality of virtual bones for the selection of one of a selected implant and graft portion suitable to replace the resection portion.
2. The system according to claim 1 , further comprising a saw guide including a fixation portion with a proximal configuration including a plurality of fixation holes and a guide portion including guiding means for a surgical saw along predefined cutting edges.
3. The system according to claim 1 , further comprising a bone plate including a proximal portion including a plurality of proximal plate holes, the proximal portion being configured for fixation to a remaining portion of the target bone after resection of the resection portion, and a distal portion including a plurality of distal plate holes, the distal portion being configured for fixation to the selected one of an implant and a graft portion.
4. The system of claim 3 , wherein the control module virtually positions a three dimensional representation of the bone plate in a desired position on the three-dimensional representation of the target bone.
5. The system of claim 4 , wherein the control module virtually positions the proximal configuration of at least two proximal bore holes in the three-dimensional representation of the remaining target bone.
6. The system of claim 4 , wherein the control module virtually positions the distal configuration of at least two distal bore holes in the three-dimensional representation of the selected one of an implant and a graft.
7. The system according to claim 1 , wherein the control module defines the resection portion of the target bone by obtaining a mirrored three-dimensional representation of the patient's contralateral bone wherein the three-dimensional representation of the patient's contralateral bone comprises one of a previously attached second marker defining a three-dimensional second reference system of coordinates and the second marker being virtually positioned in the three-dimensional representation of the patient's contralateral bone, registering the mirrored three-dimensional representation of the healthy contralateral bone and the three-dimensional representation of the most suitable virtual bone, and transferring the cutting edges at the three-dimensional representation of the remaining target bone from the first reference system of coordinates to the second reference system of coordinates.
8. The system of claim 1 , wherein the control module selects a three-dimensional representation of a most suitable virtual bone from a plurality of virtual bones provided in a digital medical library, the three-dimensional representation of the most suitable virtual bone most closely matching the three-dimensional representation of the target bone and wherein the three-dimensional representation of the most suitable virtual bone one of the second marker defining a three-dimensional second reference system of coordinates and a second marker virtually positioned in the selected three-dimensional representation of the most suitable virtual bone, and wherein the control module registers the three-dimensional representation of the target bone and the three-dimensional representation of the most suitable virtual bone and transfers the cutting edges at the three-dimensional representation of the remaining target bone from the first reference system of coordinates to the second reference system of coordinates.
9. The system of claim 1 , further comprising a digital medical library including a plurality of donor bone from which a three-dimensional representation of a most suitable donor bone to replace the resection portion is selected.