Spinal implant system and methods of use
A bone fastener includes a receiver defining an implant cavity and having an inner surface defining a slot. A band is disposable within the slot. A spacer disposable within the slot. A crown is rotatable relative to the receiver to translate the spacer relative to the inner surface such that the spacer orients the band in a capture orientation with the shaft. A screw shaft connectable with the receiver by the band and configured to penetrate tissue. Implants, systems, instruments and methods are disclosed.
1. A bone fastener comprising:
a receiver defining an implant cavity and including an inner surface defining a slot;
a band disposable within the slot;
a spacer disposable within the slot;
a crown being rotatable relative to the receiver to translate the spacer distally relative to the inner surface such that the spacer orients the band in a capture orientation; and
a screw shaft connectable with the receiver by the band and configured to penetrate tissue,
wherein the spacer is disposable in a distalmost position with the slot and engageable with the band in the capture orientation to permanently lock the receiver with the shaft.
2. A bone fastener as recited in claim 1 , wherein the spacer is engageable with the band to dispose the band in a contracted, capture orientation to fix the receiver with the shaft.
3. A bone fastener as recited in claim 1 , wherein the spacer is disposable in the distalmost position to provide tactile feedback.
4. A bone fastener as recited in claim 1 , wherein the band is disposable between an expanded orientation and a contracted, capture orientation.
5. A bone fastener as recited in claim 1 , wherein the band includes a circumferential ring defining a gap.
6. A bone fastener as recited in claim 1 , wherein the spacer is fixedly connected to or formed integrally with the crown.
7. A bone fastener as recited in claim 1 , wherein the spacer includes an outer surface being slidably engageable with the inner surface to facilitate axial translation of the spacer relative to the slot.
8. A bone fastener as recited in claim 1 , wherein the spacer includes an inner circumferential flange engageable with a distal end surface of the crown.
9. A bone fastener as recited in claim 1 , wherein the spacer includes a ramp surface engageable with the band.
10. A bone fastener as recited in claim 1 , wherein the spacer includes an inner circumferential ramp surface engageable with an outer surface of the band to dispose the band in a contracted, capture orientation.
11. A bone fastener as recited in claim 1 , wherein the rotatable crown includes a cam surface engageable with the receiver to axially translate the crown relative to the receiver.
12. A bone fastener as recited in claim 11 , wherein the cam surface includes a circumferential ridge disposed about at least a portion of the crown.
13. A bone fastener as recited in claim 1 , wherein the shaft is manually engageable with the receiver for non-instrumented assembly.
14. A bone fastener comprising:
a receiver defining an implant cavity and including an inner surface defining a slot;
a band disposable within the slot;
a spacer disposable within the slot, the spacer including a ramp surface engageable with the band;
a crown being rotatable relative to the receiver to translate the spacer distally relative to the inner surface such that the spacer orients the band in a capture orientation; and
a screw shaft connectable with the receiver by the band and configured to penetrate tissue.
15. A bone fastener as recited in claim 14 , wherein the ramp surface is engageable with an outer surface of the band to dispose the band in a contracted, capture orientation.
16. A bone fastener as recited in claim 14 , wherein the spacer is engageable with the band to dispose the band in a contracted, capture orientation to fix the receiver with the shaft.
17. A bone fastener as recited in claim 14 , wherein the band is disposable between an expanded orientation and a contracted, capture orientation.
18. A bone fastener comprising:
a receiver defining an implant cavity and including an inner surface defining a slot;
a band disposable within the slot;
a spacer disposable within the slot;
a crown being rotatable relative to the receiver to translate the spacer distally relative to the inner surface such that the spacer orients the band in a capture orientation, the crown including a cam surface engageable with the receiver to axially translate the crown relative to the receiver; and
a screw shaft connectable with the receiver by the band and configured to penetrate tissue.
19. A bone fastener as recited in claim 18 , wherein the cam surface includes a circumferential ridge disposed about at least a portion of the crown.
20. A bone fastener as recited in claim 18 , wherein the spacer is engageable with the band to dispose the band in a contracted, capture orientation to fix the receiver with the shaft.
21. A bone fastener as recited in claim 18 , wherein the band is disposable between an expanded orientation and a contracted, capture orientation.