Artificial intervertebral disc
First Claim
Patent Images
1. An artificial intervertebral disc for implantation in a spine between a first vertebral body and a second vertebral body, wherein the first vertebral body has a first vertebral body endplate, the second vertebral body has a second vertebral body endplate and the first vertebral body endplate and the second vertebral body endplate oppose one another, comprising:
- a composite structure, which composite structure includes a column comprising ePTFE and a column filler comprising an elastomer;
a first anchor member having an outer surface configured for placement against the first vertebral body endplate and an inner surface having a recess for receiving the composite structure, including both the ePTFE column and the elastomer column filler;
a second anchor member having an outer surface configured for placement against the second vertebral body endplate and an inner surface having a recess for receiving the composite structure, including both the ePTFE column and the elastomer column filler;
wherein the composite structure is attached to the first anchor member in the recess in the inner surface of the first anchor member; and
wherein the composite structure is attached to the second anchor member in the recess in the inner surface of the second anchor member.
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Abstract
The present invention is directed to the field of prosthetic devices. More particularly, one embodiment of the present invention is directed to an artificial disc that can be used as a replacement for an intervertebral disc (e.g., a human intervertebral lumbar disc).
119 Citations
27 Claims
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1. An artificial intervertebral disc for implantation in a spine between a first vertebral body and a second vertebral body, wherein the first vertebral body has a first vertebral body endplate, the second vertebral body has a second vertebral body endplate and the first vertebral body endplate and the second vertebral body endplate oppose one another, comprising:
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a composite structure, which composite structure includes a column comprising ePTFE and a column filler comprising an elastomer;
a first anchor member having an outer surface configured for placement against the first vertebral body endplate and an inner surface having a recess for receiving the composite structure, including both the ePTFE column and the elastomer column filler;
a second anchor member having an outer surface configured for placement against the second vertebral body endplate and an inner surface having a recess for receiving the composite structure, including both the ePTFE column and the elastomer column filler;
wherein the composite structure is attached to the first anchor member in the recess in the inner surface of the first anchor member; and
wherein the composite structure is attached to the second anchor member in the recess in the inner surface of the second anchor member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An artificial intervertebral disc, comprising:
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a first anchor member;
a second anchor member; and
at least two composite structures disposed side-by-side adjacent one another between the first anchor member and the second anchor member, wherein a first one of the composite structures is attached to both the first anchor member and the second anchor member and is comprised of a first column formed of ePTFE and a first column filler formed of an elastomer and wherein a second one of the composite structures is attached to both the first anchor member and the second anchor member and is comprised of a second column formed of ePTFE and a second column filler formed of an elastomer. - View Dependent Claims (22, 23, 24, 25, 26)
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27. An artificial intervertebral disc for implantation in a spine between a first vertebral body and a second vertebral body, wherein the first vertebral body has a first vertebral body endplate, the second vertebral body has a second vertebral body endplate and the first vertebral body endplate and the second vertebral body endplate oppose one another, comprising:
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a first assembly including;
(a) a first anchor member;
(b) a second anchor member; and
(c) a composite structure disposed between the first anchor member of the first assembly and the second anchor member of the first assembly, wherein the composite structure of the first assembly is attached to both the first anchor member of the first assembly and the second anchor member of the first assembly, and the composite structure of the first assembly includes a column comprised of ePTFE and a column filler comprised of an elastomer; and
a second assembly including;
(a) a first anchor member;
(b) a second anchor member; and
(c) a composite structure disposed between the first anchor member of the second assembly and the second anchor member of the second assembly, wherein the composite structure of the second assembly is attached to both the first anchor member of the second assembly and the second anchor member of the second assembly, and the composite structure of the second assembly includes a column comprised of ePTFE and a column filler comprised of an elastomer;
wherein the first assembly and the second assembly are disposed side-by-side adjacent one another between the first vertebral body endplate and the second vertebral body endplate.
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Specification