Porous implant device with improved core
First Claim
Patent Images
1. An implant device comprising:
- a head portion at a coronal end of the implant, the head portion having an interior portion extending apically from the head portion;
an exterior portion that receives the interior portion, the exterior portion forming an exterior surface of the implant and being made of a porous material defining radially uniform passages extending entirely and radially through the exterior portion;
an anchor portion at an apical end of the implant, the anchor portion comprising a bore that engages an apical end of the interior portion and an outer surface having a thread;
wherein the exterior portion is retained on the interior portion between the head portion and the anchor portion when the anchor portion is engaged with the interior portion;
wherein the interior portion includes an outer surface with a treated area being adjacent to the exterior portion and accessible from the exterior surface through the passages, the treated area having a treatment for direct attachment to bone or soft tissue; and
wherein the outer surface of the interior portion includes at least one generally longitudinally extending flute, the at least one generally longitudinally extending flute extending around less than a total circumference of the interior portion.
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Abstract
An implant device has an exterior portion forming an exterior surface of the implant. The exterior portion is made of a porous material defining passages through the exterior portion. An inner portion has an outer surface with a treated area that is accessible from the exterior surface through the passages. The treated area has a treatment for direct attachment to bone or soft tissue.
356 Citations
19 Claims
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1. An implant device comprising:
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a head portion at a coronal end of the implant, the head portion having an interior portion extending apically from the head portion; an exterior portion that receives the interior portion, the exterior portion forming an exterior surface of the implant and being made of a porous material defining radially uniform passages extending entirely and radially through the exterior portion; an anchor portion at an apical end of the implant, the anchor portion comprising a bore that engages an apical end of the interior portion and an outer surface having a thread; wherein the exterior portion is retained on the interior portion between the head portion and the anchor portion when the anchor portion is engaged with the interior portion; wherein the interior portion includes an outer surface with a treated area being adjacent to the exterior portion and accessible from the exterior surface through the passages, the treated area having a treatment for direct attachment to bone or soft tissue; and wherein the outer surface of the interior portion includes at least one generally longitudinally extending flute, the at least one generally longitudinally extending flute extending around less than a total circumference of the interior portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An implant device, comprising:
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a longitudinal axis generally defined by the implant device; a head at a coronal end of the implant, the head having a core extending apically from the head; a collar that receives the core and is configured for placement in a bore in bone and having a porous material, the collar comprising radially uniform passages formed by the porous material and extending entirely and radially through the collar; an anchor at an apical end of the implant, the anchor comprising a bore that engages an apical end of the core; wherein the collar is retained on the core between the head and the anchor when the anchor is engaged with the core; wherein the core received within the collar includes a non-circular outer periphery in a cross-section extending perpendicular to the axis to engage the collar and rotatably secure the collar to the core, the core comprising a surface having a treated area covered by the collar and treated for direct attachment to bone or soft tissue; and wherein the non-circular outer periphery includes at least two concave curved surfaces that adjoin at a junction forming a peak that engages the collar. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A method of forming an implant device, comprising:
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treating a core for direct engagement with bone or soft tissue, the core extending from a head of the implant device; securing an exterior porous portion over the treated area of the core, the exterior porous portion comprising radially uniform passages, wherein the core includes a non-circular outer periphery in a cross-section extending perpendicular to a longitudinal axis to engage the collar and rotatably secure the exterior porous portion to the core, and wherein the non-circular outer periphery includes at least two concave curved surfaces that adjoin at a junction forming a peak that engages the exterior porous portion; and securing an anchor at an apical end of the implant device, the anchor comprising a bore that engages an apical end of the core such that the exterior porous portion is retained on the core between the head and the anchor. - View Dependent Claims (18, 19)
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Specification