Osseointegrative surgical implant

a surgical implant and osseointegration technology, applied in the field of osseointegration surgical implants, can solve the problems of limited flexibility in the placement of implants, limiting or precluding the use of conventional single-stage implants, and the abutment of the anchorage of the retaining screw or other mechanical fastening device can eventually loosen or break, so as to promote healing and osseointegration, improve primary stability, and reduce friction

US20160015483A1Inactive Publication Date: 2016-01-21OSSEODYNE SURGICAL SOLUTIONS LLC
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
Publication Date
2016-01-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

Embodiments of the present invention provide an osseointegrative implant and related tools, components and fabrication techniques for surgical bone fixation and dental restoration purposes. In one embodiment an all-ceramic single-stage threaded or press-fit implant is provided having finely detailed surface features formed by ceramic injection molding and / or spark plasma sintering of a powder compact or green body comprising finely powdered zirconia. In another embodiment a two-stage threaded implant is provided having an exterior shell or body formed substantially entirely of ceramic and / or CNT-reinforced ceramic composite material. The implant may include one or more frictionally anisotropic bone-engaging surfaces. In another embodiment a densely sintered ceramic implant is provided wherein, prior to sintering, the porous debound green body is exposed to ions and / or particles of silver, gold, titanium, zirconia, YSZ, α-tricalcium phosphate, hydroxyapatite, carbon, carbon nanotubes, and / or other particles which remain lodged in the implant surface after sintering. Optionally, at least the supragingival portions of an all-ceramic implant are configured to have high translucence in the visible light range. Optionally, at least the bone-engaging portions of an all-ceramic implant are coated with a fused layer of titanium oxide.
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Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] The application claims the benefit under 35 U.S.C. §119(e) to Provisional Patent Application No. 61 / 986,242 filed Apr. 30, 2014, the entire contents of which are incorporated herein by reference.STATEMENT RE: FEDERALLY SPONSORED RESEARCH / DEVELOPMENT

[0002] Not ApplicableBACKGROUND

[0003] The present invention generally relates to osseointegrative implants and related tools and components for surgical bone fixation and dental restoration purposes and improved methods for manufacturing and using the same.

[0004] Surgical bone fixation devices such as screws, staples, rods, and plates have been in clinical use for decades. These devices largely evolved from industrial designs for fastening wood, steel, plastic and other materials. Starting in the 1950s Per-Ingvar Branemark and others demonstrated that implanted bone fixation devices made of pure titanium had the ability to become permanently incorporated with living bone tissue. That is, the livin...

Examples

example 1

[0251]A single-stage threaded implant is formed having one or more of the features and geometries as illustrated and described above in connection with FIGS. 1-8. The implant is formed by conventional machining and / or grinding of a solid cylinder of pure titanium or titanium alloy material.

example 2

[0252]A single-stage press-fit implant is formed having one or more of the features and geometries as illustrated and described above in connection with FIGS. 11A-C. The implant is formed by conventional machining and / or grinding of a solid cylinder of pure titanium or titanium alloy material.

example 3

[0253]A two-stage threaded ceramic implant is formed having one or more of the features and geometries as illustrated and described above in connection with FIGS. 9-10. At least one portion of the implant is formed by conventional machining and / or grinding of a solid cylinder of pure titanium, titanium alloy or stainless steel material. At least the outer bone-engaging portion of the implant is formed by densely sintering a ceramic green body formed by slip casting, powder compacting or injection molding a ceramic feedstock comprising 3 mol % yttria-stabilized powdered zirconia having an average particle size of about 0.16 μm.