Claims
- 1. A cutting jig system serving as a guide for cutting spinal spacer implants from donor bone for spinal fusions, the system comprising:
a first jig having a bed with clamp means for clamping donor bone positioned on said bed for cutting; a removable cutting guide insert received in fixed orientation on said bed and having two spaced cutting blade cutting guides configured for transversely cutting out a segment of donor bone clamped on said bed to a predetermined shape and dimension to provide a custom fit lumbar inter-body fusion implant.
- 2. The cutting jig system of claim 1, wherein said spaced cutting blade cutting guides are open ended and dimensioned to receive and guide a cutting blade for cutting through donor bone clamped on said bed along a predetermined profile.
- 3. The cutting jig system of claim 2, wherein said spaced saw cutting guides are configured for cutting a bi-convex cross sectional segment from the donor bone.
- 4. The cutting jig system of claim 2, including multiple of said cutting guide inserts, each insert having different cutting guide profiles from another insert for providing multiple choices in dimension and shape for custom cut donor bone implant segments.
- 5. The cutting jig system of claim 2, wherein said cutting guide insert comprises a spaced upper and lower matched pair of inserts having identical cutting blade guide profiles therein for guiding respectively upper and lower portions of a cutting blade.
- 6. The cutting jig system of claim 5, including multiple of said upper and lower insert pairs, each pair having different cutting blade guide profiles from another pair for providing multiple choices in dimension and shape for custom cut donor bone implant segments.
- 7. The cutting jig system of claim 2, wherein said cutting blade cutting guides are comprised of open ended slots.
- 8. The cutting jig system of claim 2, wherein said bed includes a trough for receiving an elongate donor bone segment therein for clamping.
- 9. The cutting jig system of claim 1, including: a second jig having a bed with a trough therein which is contoured and dimensioned to receive and seat bottom portions of an implant cut out from donor bone on said first jig, a cover plate dimensioned and contoured to engage upper portions of said implant and having a clamp mechanism for drawing said cover plate to said bed for said second jig in alignment for clamping said implant therebetween, and cutting blade guide slots in said cover plate for guiding a cutting blade to correspondingly cut said implant.
- 10. The cutting jig system of claim 9, wherein said cover plate includes means for adjusting spacing between selected of said slots.
- 11. The cutting jig system of claim 8, including cutting profile reference line indicia on the bed for said second jig for providing suggested cutting profiles and proper alignment of said cover plate.
- 12. The cutting jig system of claim 1, including means for retaining an implant cut out from donor bone on said first jig and having a drill guide for guiding a drill to cut a notch along one side of said implant for mating engagement with a finger jaw on an insertion clamp for gripping and controlling the implant during lumbar insertion.
- 13. The cutting jig system of 12, including an insertion clamp having a pair of parallel finger jaws for releaseably clamping opposite sides of said implant with one of said finger jaws seated in said notch.
- 14. A cutting jig system serving as a guide for cutting custom fit cervical or thoracic inter-body fusion spinal spacer implants from donor bone for spinal fusions, the system comprising;
a jig having a bed contoured and dimensioned to receive and seat bottom portions of a donor bone implant; a cover plate dimensioned and contoured to engage upper portions of said implant and having a clamp mechanism for drawing said cover plate to said bed in alignment for clamping said implant therebetween; and cutting blade guide slots in said cover plate for guiding a cutting blade to correspondingly cut said implant.
- 15. The cutting jig system of claim 14, wherein said cover plate guide slots are comprised of two spaced diverging slots angled at approximately three degrees relative to each other.
- 16. The cutting jig system of claim 14, wherein said cover plate guide slots are comprised of parallel slots spaced at predetermined intervals.
- 17. The cutting jig system of claim 14, wherein selected surfaces of at least one of said bed and cover plate is roughened for permitting nonslip engagement of an implant.
CROSS REFERENCE
[0001] This application is a continuation-in-part of Application No. 10/223,230, filed Aug. 19,2002, for BONE CUTTING JIG SYSTEM FOR SPINAL IMPLANT.
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
10223230 |
Aug 2002 |
US |
Child |
10445567 |
May 2003 |
US |