Apparatus for implantation into bone related applications
First Claim
1. An apparatus for implantation into a bone in a patient'"'"'s spine or pelvis, said apparatus, when implanted, being resistant to toggling in the bone and to being pulled from the bone, said apparatus comprising:
- a platform having a first surface for facing a bone in a patient'"'"'s spine or pelvis, said platform including structure for connection to a spinal fixation implant; and
at least one helical spike for embedding into the bone upon rotation of said platform, said at least one helical spike projecting tangentially from said platform and extending around a longitudinal axis, said at least one helical spike having a tip portion at a distal end which penetrates into the bone as said platform is rotated, a connecting portion at a proximal end connected to said platform, and an intermediate portion extending between said connecting portion and said tip portion;
at least one of said intermediate portion and said connecting portion of said at least one helical spike having a tubular cross-section defined by an outer diameter and an inner diameter of said at least one helical spike.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus (10) is provided for implantation into a bone (12) in a patient'"'"'s spine or pelvis. The apparatus (10) comprises a platform (24) having a first surface (38) for facing the bone (12). The platform (24) includes structure (32, 34, 36) for connection to a spinal fixation implant (100). The apparatus (10) further comprises helical spikes (50, 52) for embedding into the bone (12) upon rotation of the platform (24). The helical spikes (50, 52) project tangentially from the platform (24) and extend around a longitudinal axis (22). The helical spikes (50, 52) have a tip portion (58) which penetrates into the bone (12) as the platform (24) is rotated. The helical spikes (50, 52) further have a connecting portion (54) connected to the platform (24) and an intermediate portion (56) extending between the connecting portion and the tip portion (58). At least one of the intermediate portion (56) and the connecting portion (54) has a tubular cross-section.
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Citations
40 Claims
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1. An apparatus for implantation into a bone in a patient'"'"'s spine or pelvis, said apparatus, when implanted, being resistant to toggling in the bone and to being pulled from the bone, said apparatus comprising:
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a platform having a first surface for facing a bone in a patient'"'"'s spine or pelvis, said platform including structure for connection to a spinal fixation implant; and
at least one helical spike for embedding into the bone upon rotation of said platform, said at least one helical spike projecting tangentially from said platform and extending around a longitudinal axis, said at least one helical spike having a tip portion at a distal end which penetrates into the bone as said platform is rotated, a connecting portion at a proximal end connected to said platform, and an intermediate portion extending between said connecting portion and said tip portion;
at least one of said intermediate portion and said connecting portion of said at least one helical spike having a tubular cross-section defined by an outer diameter and an inner diameter of said at least one helical spike. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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13. An apparatus comprising:
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at least one anchor for implantation into a bone, said at least one anchor, when implanted, being resistant to toggling in the bone and to being pulled from the bone; and
a spinal fixation implant for extending between and connecting a plurality of bones;
said at least one anchor including a platform having a first surface for facing the bone, said platform further having structure for connection with said spinal fixation implant;
said at least one anchor further including at least two helical spikes for embedding into the bone upon rotation of said platform, said at least two helical spikes being spaced apart and projecting from said first surface on said platform, said at least two helical spikes extending around a longitudinal axis, each of said at least two helical spikes having a tip portion at a distal end which penetrates into the bone as said platform is rotated, a connecting portion at a proximal end connected to said platform, and an intermediate portion extending between said connecting portion and said tip portion;
at least one of said intermediate portion and said connecting portion of each of said at least two helical spikes having a tubular cross-section defined by an outer diameter and an inner diameter of said at least two helical spikes.
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28. An apparatus for implantation into an adjacent pair of vertebral bodies having first and second surfaces that oppose each other, said apparatus, when implanted, being attached to each of the vertebral bodies and stabilizing the vertebral bodies while the vertebral bodies fuse together, said apparatus comprising:
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a platform having a third surface extending transverse to the first and second surfaces; and
at least one helical spike for embedding into each of the adjacent pair of vertebral bodies upon rotation of said platform to attach said at least one helical spike to each of the vertebral bodies and thus fasten the vertebral bodies together, said at least one helical spike projecting from said platform and extending around a longitudinal axis, said at least one helical spike having a tip portion at a distal end for penetrating the first and second surfaces and for screwing into the adjacent pair of vertebral bodies as said platform is rotated;
at least a portion of said at least one helical spike having a tubular cross-section defined by an outer diameter and an inner diameter;
said at least one helical spike at least partially defining an internal cavity for receiving material that promotes fusion of the vertebral bodies.
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Specification