Porous implant with non-porous threads
First Claim
Patent Images
1. An implant, comprising:
- a shaft having an apical end, a coronal end and an exterior surface, the entire exterior surface of the shaft being formed of a first material that is substantially porous;
a head portion having a main body with an apical end and a coronal end; and
a coil of threads having an apical end, a coronal end and an interior surface, and being made of a second material that is different from the first material, wherein the coronal end of the coil of threads is connected to the apical end of the main body and the coil of threads extends apically from the main body, with the interior surface of the coil engaging and winding around the exterior surface of the shaft, and extending outwardly from the exterior surface for engaging bone, with the interior surface of the coil of threads disposing the coronal end of the shaft proximate the apical end of the main body.
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Abstract
An implant which includes a shaft made of a first material and having an exterior surface, and at least one thread made of a second material different from the first material, engaging the exterior surface, and extending outwardly from the exterior surface for engaging bone. After implantation of the implant, bone tissue may osseointegrate into the porous shaft to anchor the implant within the surrounding bone. The first material may be a porous metal and include tantalum while the second material is non-porous.
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Citations
26 Claims
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1. An implant, comprising:
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a shaft having an apical end, a coronal end and an exterior surface, the entire exterior surface of the shaft being formed of a first material that is substantially porous; a head portion having a main body with an apical end and a coronal end; and a coil of threads having an apical end, a coronal end and an interior surface, and being made of a second material that is different from the first material, wherein the coronal end of the coil of threads is connected to the apical end of the main body and the coil of threads extends apically from the main body, with the interior surface of the coil engaging and winding around the exterior surface of the shaft, and extending outwardly from the exterior surface for engaging bone, with the interior surface of the coil of threads disposing the coronal end of the shaft proximate the apical end of the main body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A dental implant, comprising:
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a shaft having an apical end, a coronal end and an exterior surface, the entire exterior surface of the shaft being formed of a metallic and substantially porous material; a head portion having a main body with an apical end and a coronal end; and a helical thread having an apical end and a coronal end, wherein the coronal end of the helical thread is connected to the apical end of the main body and the helical thread extends apically from the main body, and with the helical thread generally defining a central opening receiving the shaft and securing the shaft in at least a press-fit within the helical thread, with the helical thread disposing the coronal end of the shaft proximate the apical end of the main body. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A method of assembling an implant comprising:
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providing a head portion having a main body with an apical end and a coronal end, and a helical thread having an apical end and a coronal end, wherein the coronal end of the helical thread is connect to the apical end of the main body and the helical thread extends apically from the main body, with the helical thread defining a central opening; providing a shaft having an apical end, a coronal end and an exterior surface, with the entire exterior surface being formed of a metallic and substantially porous material; and inserting the porous shaft into the central opening formed by the helical thread, with the helical thread engaging and winding around the exterior surface of the shaft and the helical thread disposing the coronal end of the shaft being proximate the apical end of the main body. - View Dependent Claims (25, 26)
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Specification