Bone implant and means of insertion
An assembly used in osteosynthesis comprising a delivery instrument in combination with an implant wherein the delivery instrument releasably holds the implant in a first configuration prior to attachment of the implant to bone. The delivery instrument allows the implant to be affixed to bone before the implant is released from the instrument. And the instrument may comprise guide means for drills, depth gauges, screws, pins, pegs, blades and or drivers which are used or implanted when the implant is releasably attached to the instrument. After the implant is affixed to bone and released from the delivery instrument, the implant assumes at least a second configuration which provides compression and or distraction and or control of spacial orientation.
1. A system for osteosynthesis between first and second bone members, the system comprising:
a staple and an inserter;
wherein the staple comprises a bridge, first and second legs, and first and second inserter-engaging protrusions;
wherein the bridge extends longitudinally between first and second junctures with the first and second legs, respectively, wherein the bridge comprises a bone-facing side and a top side opposite the bone-facing side;
wherein the first leg extends outwardly from the bone-facing side of the bridge at the first juncture;
wherein the second leg extends outwardly from the bone-facing side of the bridge at the second juncture;
wherein the first inserter-engaging protrusions extends outwardly from the first juncture away from the second juncture;
wherein the second inserter-engaging protrusions extends outwardly from the second juncture away from the first juncture;
wherein the staple comprises a free state and an elastically-deformed state, wherein in the free state, the first and second legs converge as they extend from the bone-facing side of the bridge, wherein in the elastically-deformed state, the first and second legs are substantially parallel;
wherein the inserter is removably couplable to the staple, wherein the inserter comprises a bridge-contacting feature and first and second staple-engaging ledges;
wherein when the inserter is coupled to the staple in the elastically-deformed state, the bridge-contacting feature supports the top side of the bridge and the first and second inserter-engaging protrusions are supported on the first and second staple-engaging ledges, respectively, to maintain the staple in the elastically-deformed state, and the inserter couples to the staple such that the inserter does not interfere with final seating of the staple against the first and second bone members;
wherein the inserter is removable from the staple by twisting the inserter relative to the staple to disengage the first and second staple-engaging ledges from the first and second inserter-engaging protrusions, respectively;
wherein when the inserter is removed from the staple, the staple moves toward the free state.
2. The system of claim 1 , wherein the bridge has a substantially uniform thickness between the first and second junctures.
3. The system of claim 1 , wherein the bridge has a rectangular cross section bounded by the bone-facing and top sides of the bridge, and front and back sides of the bridge.
4. The system of claim 3 , wherein the rectangular cross section of the bridge is wider between the front and back sides of the bridge than its thickness between the bone-facing and top sides of the bridge.
5. The system of claim 1 , wherein the first and second inserter-engaging protrusions each comprise a flat bone-facing surface.
6. The system of claim 1 , wherein the bridge comprises front and back sides that each extend between the bone-facing and top sides and the first and second junctures, wherein the inserter comprises front and back sides, wherein when the inserter is coupled to the staple, the front and back sides of the inserter face the same direction as the front and back sides of the bridge, respectively, wherein the front and back sides of the inserter are flat.
7. The system of claim 1 , wherein the first staple-engaging ledge remains a substantially constant distance from the second staple-engaging ledge while the inserter is coupled to the staple in the elastically-deformed state and while the inserter is removed from the staple.
8. The system of claim 7 , wherein the inserter consists of a single component part.
9. A system for osteosynthesis between first and second bone members, the system comprising:
a staple and an inserter;
wherein the staple comprises a continuous flat front side and a continuous flat back side, wherein the staple comprises a bridge, first and second legs, and first and second inserter-engaging protrusions, wherein the bridge, the first and second legs, and the first and second inserter-engaging protrusions are all bounded by the front and back sides of the staple;
wherein the bridge extends longitudinally between first and second ends, wherein the bridge comprises a top side and a bottom bone-facing side, wherein the bridge comprises a rectangular cross section bounded by the front and back sides of the staple and the top and bone-facing sides of the bridge;
wherein the first leg extends outwardly from the bone-facing side of the bridge at the first end of the bridge, forming a first juncture where the first leg merges with the bridge;
wherein the second leg extends outwardly from the bone-facing side of the bridge at the second end of the bridge, forming a second juncture where the second leg merges with the bridge;
wherein the first inserter-engaging protrusion extends outwardly from the first juncture away from the second juncture;
wherein the second inserter-engaging protrusion extends outwardly from the second juncture away from the first juncture;
wherein the staple comprises a free state and an elastically deformed state, wherein in the free state, the first and second legs converge as they extend from the bone-facing side of the bridge, wherein in the elastically deformed state, the first and second legs are substantially parallel;
wherein the inserter is removably couplable to the staple, wherein the inserter comprises a bridge-contacting feature and first and second staple-engaging ledges;
wherein when the inserter is coupled to the staple in the elastically deformed state, the bridge-contacting feature supports the top side of the bridge and the first and second inserter-engaging protrusions are supported on the first and second staple-engaging ledges, respectively, to maintain the staple in the elastically deformed state, and the inserter couples to the staple such that the staple may be placed in its final position relative to the first and second bone members while the inserter is coupled to the staple;
wherein the inserter is removable from the staple by twisting the inserter relative to the staple to disengage the first and second staple-engaging ledges from the first and second inserter-engaging protrusions, respectively;
wherein when the inserter is removed from the staple, the staple moves toward the free state.
10. The system of claim 9 , wherein the bridge has a substantially uniform thickness between the first and second ends.
11. The system of claim 9 , wherein the rectangular cross section of the bridge is wider between the front and back sides of the staple than its thickness between the top and bone-facing sides of the bridge.
12. The system of claim 9 , wherein the first and second inserter-engaging protrusions each comprise a flat bone-facing surface.
13. The system of claim 9 , wherein the inserter comprises front and back sides, wherein when the inserter is coupled to the staple, the front and back sides of the inserter face the same direction as the front and back sides of the staple, respectively, wherein the front and back sides of the inserter are flat.
14. The system of claim 9 , wherein the first staple-engaging ledge remains a substantially constant distance from the second staple-engaging ledge while the inserter is coupled to the staple in the elastically deformed state and while the inserter is removed from the staple.
15. The system of claim 14 , wherein the inserter consists of a single component part.
16. A system for osteosynthesis between first and second bone members, the system comprising:
a staple and an inserter;
wherein the staple comprises a bridge, first and second legs, and first and second inserter-engaging protrusions;
wherein the bridge extends longitudinally between first and second junctures with the first and second legs, respectively, wherein the bridge comprises a bone-facing side and a top side opposite the bone-facing side;
wherein the first leg extends outwardly from the bone-facing side of the bridge at the first juncture;
wherein the second leg extends outwardly from the bone-facing side of the bridge at the second juncture;
wherein the first inserter-engaging protrusion extends outwardly from the first juncture away from the second juncture;
wherein the second inserter-engaging protrusion extends outwardly from the second juncture away from the first juncture;
wherein the first and second inserter-engaging protrusions each comprise a flat bone-facing side;
wherein the staple comprises a free state and an elastically-deformed state, wherein in the free state, the first and second legs converge as they extend from the bone-facing side of the bridge, wherein in the elastically-deformed state, the first and second legs are substantially parallel;
wherein the inserter is removably couplable to the staple, wherein the inserter comprises a bridge-contacting feature and first and second staple-engaging pockets that each comprise a flat surface;
wherein when the inserter is coupled to the staple in the elastically-deformed state, the bridge-contacting feature supports the top side of the bridge and the flat bone-facing sides of the first and second inserter-engaging protrusions are supported by the flat surfaces of the first and second staple-engaging pockets, respectively, to maintain the staple in the elastically-deformed state, and the inserter couples to the staple such that the inserter does not interfere with final seating of the staple against the first and second bone members;
wherein the inserter is removable from the staple by twisting the inserter relative to the staple to disengage the first and second staple-engaging pockets from the first and second inserter-engaging protrusions, respectively;
wherein when the inserter is removed from the staple, the staple moves toward the free state.
17. The system of claim 16 , wherein the bridge has a substantially uniform thickness between the first and second junctures, wherein the bridge has a rectangular cross section bounded by the bone-facing and top sides of the bridge, and front and back sides of the bridge.
18. The system of claim 17 , wherein the rectangular cross section of the bridge is wider between the front and back sides of the bridge than its thickness between the bone-facing and top sides of the bridge.
19. The system of claim 16 , wherein the bridge comprises front and back sides that each extend between the bone-facing and top sides and the first and second junctures, wherein the inserter comprises front and back sides, wherein when the inserter is coupled to the staple, the front and back sides of the inserter face the same direction as the front and back sides of the bridge, respectively, wherein the front and back sides of the inserter are flat.
20. The system of claim 16 , wherein the first staple-engaging pocket remains a substantially constant distance from the second staple-engaging pocket while the inserter is coupled to the staple in the elastically-deformed state and while the inserter is removed from the staple, wherein the inserter consists of a single component part.