Apparatus for implantation into bone
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 first surface being solid and extending generally transverse to a longitudinal axis of said apparatus, 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 first surface of said platform and extending around said longitudinal axis, said at least one helical spike having a proximal end and a distal end;
said at least one helical spike including a tip portion at said distal end which penetrates into the bone as said platform is rotated, a connecting portion at said proximal end connected to said first surface of said platform, and an intermediate portion extending between said connecting portion and said tip portion.
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), when implanted, is resistant to toggling in the bone (12) and to being pulled from the bone. The apparatus (10) comprises a platform (24) having a first surface (38) for facing the bone (12) in a patient'"'"'s spine or pelvis. 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 (52, 52) have a tip portion (58) at a distal end (62) which penetrates into the bone (12) as the platform (24) is rotated. The helical spikes (50, 52) further have a connecting portion (54) at a proximal end (58) connected to the platform (24) and an intermediate portion (56) extending between the connecting portion (54) and the tip portion (58).
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Citations
21 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 first surface being solid and extending generally transverse to a longitudinal axis of said apparatus, 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 first surface of said platform and extending around said longitudinal axis, said at least one helical spike having a proximal end and a distal end;
said at least one helical spike including a tip portion at said distal end which penetrates into the bone as said platform is rotated, a connecting portion at said proximal end connected to said first surface of said platform, and an intermediate portion extending between said connecting portion and said tip portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus comprising:
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at least one anchor for implantation into a bone, said at least one anchor having a longitudinal axis and, when implanted, being resistant to toggling in the bone and to being pulled axially 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 first surface being solid and extending generally transverse to said longitudinal axis, 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 projecting tangentially from said first surface of said platform and extending around said longitudinal axis, each of said at least two helical spikes having a proximal end and a distal end;
each of said at least two helical spikes including a tip portion at said distal end which penetrates into the bone as said platform is rotated, a connecting portion at said proximal end connected to said first surface of said platform, and an intermediate portion extending between said connecting portion and said tip portion. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification