Bone cage including offset sets of protrusions within a bone ingrowth cavity and related methods
OwnerLuis E. Duarteinventor
Life of this patent
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Abstract
A bone cage may include first and second spaced apart frames defining a bone ingrowth cavity therebetween, a plurality of first protrusions each having a proximal end coupled to the first frame and a distal end extending into the cavity toward the second frame but not contacting the second frame, and a plurality of second protrusions each having a proximal end coupled to the second frame and a distal end extending into the cavity toward the first frame but not contacting the first frame. Furthermore, the distal ends of the first protrusions may be laterally offset from the distal ends of the second protrusions.
Claims20
A bone cage comprising:
- first and second spaced apart frames defining a bone ingrowth cavity therebetween;
- a plurality of first protrusions each having a proximal end coupled to the first frame and a distal end extending into the cavity toward the second frame but not contacting the second frame;
- and
- a plurality of second protrusions each having a proximal end coupled to the second frame and a distal end extending into the cavity toward the first frame but not contacting the first frame;
- wherein the distal ends of the first protrusions are laterally offset from the distal ends of the second protrusions.
A bone cage comprising:
- opposing upper and lower spaced apart frames defining a bone ingrowth cavity therebetween;
- a plurality of first protrusions each having a proximal end coupled to the upper frame and a distal end extending into the cavity toward the lower frame but not contacting the lower frame;
- and
- a plurality of second protrusions each having a proximal end coupled to the lower frame and a distal end extending into the cavity toward the upper frame but not contacting the upper frame;
- wherein the distal ends of the first protrusions are laterally offset from the distal ends of the second protrusions, and wherein at least some of the first and second protrusions extend into the cavity normal to the upper and lower frames, respectively.
A method comprising:
- installing a bone cage between adjacent bones in a patient, the bone cage comprising first and second spaced apart frames defining a bone ingrowth cavity therebetween, a plurality of first protrusions each having a proximal end coupled to the first frame and a distal end extending into the cavity toward the second frame but not contacting the second frame, and a plurality of second protrusions each having a proximal end coupled to the second frame and a distal end extending into the cavity toward the first frame but not contacting the first frame;
- wherein the distal ends of the first protrusions are laterally offset from the distal ends of the second protrusions.
Dependencies are inferred from the claim text.