Self-osteotomizing bone implant and related method

{
  "publication_number": "US10064707B2",
  "country": "US",
  "kind": "B2",
  "title": "Self-osteotomizing bone implant and related method",
  "abstract": "A bone implant includes a head and a core body extending from the head to a tip. An osteotomy blade extends outwardly from at least a portion of the core body to form a spiral thread. Channels form bone cutting edges of the implant. The implant, and particularly the osteotomy blade, is configured to self-osteotomize and direct cut bone into the channels to facilitate bone growth and grafting and integration of the implant to the bone.",
  "claims": [
    "1. A self-osteotomizing bone implant comprising: a head configured to receive a dental abutment, wherein the head comprises an upper surface and a neck portion extending therefrom, wherein the neck portion is substantially cylindrical in shape, wherein the head is configured to be placed at or below an upper bone surface; a core body extending from the neck portion of the head to a tip generally opposite the head; an osteotomy blade extending outwardly from at least a majority of a length of the core body and forming a spiral thread having multiple turns around the core body, wherein at least a portion of a surface of the osteotomy blade distal and facing outwardly from the core body is generally flat and defines a stabilizing wall having a bone cutting edge, wherein an outer diameter of the osteotomy blade extending outwardly from the core body progressively decreases in the direction from the head to the tip to provide a tapered configuration thereto, wherein a radius of the osteotomy blade progressively narrows proximate to the bone cutting edge; and at least one non-rectilinear channel extending a length of the implant so as to pass through multiple turns of the osteotomy blade, wherein the at least one channel is formed in the osteotomy blade and extends from an outer edge of the osteotomy blade to at least the core body, wherein the at least one channel is formed at an angle of less than 90 degrees with respect to the core body so as to create a bone cutting edge on the osteotomy blade on one side of the channel and a non-cutting edge on the osteotomy blade on the generally opposite side of the channel, wherein the at least one channel is oriented in a direction generally opposite of the spiral thread of the osteotomy blade and configured to receive bone shavings cut by the osteotomy blade during implantation of the implant into bone and direct the bone shavings towards the tip of the implant.",
    "2. The implant of claim 1, wherein the at least one channel is open-faced.",
    "3. The implant of claim 1, further comprising a plurality of non-rectilinear channels, wherein the plurality of non-rectilinear channels is disposed in spaced relation to one another.",
    "4. The implant of claim 1, wherein the at least one channel is generally spiral in shape.",
    "5. The implant of claim 1, wherein the at least one channel extends from an outer edge of the osteotomy blade into the core body.",
    "6. The implant of claim 1, wherein the at least one channel extends from the head to the tip of the implant.",
    "7. The implant of claim 1, wherein the at least one channel extends from the neck portion to the tip of the implant.",
    "8. The implant of claim 1, wherein the at least one channel is formed at an angle of approximately 30 degrees with respect to the core body.",
    "9. The implant of claim 1, wherein the tip is generally rounded in shape.",
    "10. The implant of claim 9, wherein the tip is shaped to correspond to the shape of pilot hole drilled in the bone prior to implantation of the implant thereto.",
    "11. The implant of claim 1, wherein the neck portion further comprises a plurality of microthreads formed thereon, wherein the plurality of microthreads have a pitch angle generally corresponding to a pitch angle of the osteotomy blade.",
    "12. The implant of claim 1, wherein head further comprises a generally concave depression between the upper surface and the neck portion, wherein the concave depression is configured to receive bone therein when the implant is implanted.",
    "13. The implant of claim 1, wherein an outer diameter of the core body progressively decreases in the direction from the head to the tip.",
    "14. The implant of claim 1, wherein an upper portion of the implant is roughened by media blasting and a lower portion of the implant comprising at least the tip has a smoother finish than the upper portion.",
    "15. A self-osteotomizing bone implant comprising: a head configured to receive a dental abutment, wherein the head comprises an upper surface and a neck portion extending therefrom, wherein the neck portion is substantially cylindrical in shape, wherein the head is configured to be placed at or below an upper bone surface; a core body extending from the neck portion of the head to a tip generally opposite the head; an osteotomy blade extending outwardly from at least a majority of a length of the core body and forming a spiral thread having multiple turns around the core body, wherein at least a portion of a surface of the osteotomy blade distal and facing outwardly from the core body is generally flat and defines a stabilizing wall having a bone cutting edge, wherein an outer diameter of the osteotomy blade extending outwardly from the core body progressively decreases in the direction from the head to the tip to provide a tapered configuration thereto, wherein a radius of the osteotomy blade progressively narrows proximate to the bone cutting edge; and a plurality of channels extending a length of the implant so as to pass through multiple turns of the osteotomy blade, wherein each of the plurality of channels is formed in the osteotomy blade and extends from an outer edge of the osteotomy blade to at least the core body, wherein each of the plurality of channels is formed at an angle of less than 90 degrees with respect to the core body so as to create a bone cutting edge on the osteotomy blade on one side of each respective channel and a non-cutting edge on the osteotomy blade on the generally opposite side of each respective channel, wherein each of the plurality of channels is oriented in a direction generally opposite of the spiral thread of the osteotomy blade and configured to receive bone shavings cut by the osteotomy blade during implantation of the implant into bone and direct the bone shavings towards the tip of the implant.",
    "16. The implant of claim 15, wherein each of the plurality of channels is generally spiral in shape.",
    "17. The implant of claim 15, wherein at least one channel extends from an outer edge of the osteotomy blade into the core body.",
    "18. The implant of claim 15, wherein at least one channel extends from the head to the tip of the implant.",
    "19. The implant of claim 15, wherein at least one channel extends from the neck portion to the tip of the implant.",
    "20. The implant of claim 15, wherein at least one channel is formed at an angle of approximately 30 degrees with respect to the core body.",
    "21. The implant of claim 15, wherein the tip is generally rounded in shape.",
    "22. The implant of claim 21, wherein the tip is shaped to correspond to the shape of pilot hole drilled in the bone prior to implantation of the implant thereto.",
    "23. The implant of claim 15, wherein the neck portion further comprises a plurality of microthreads formed thereon, wherein the plurality of microthreads have a pitch angle generally corresponding to a pitch angle of the osteotomy blade.",
    "24. The implant of claim 15, wherein head further comprises a generally concave depression between the upper surface and the neck portion, wherein the concave depression is configured to receive bone therein when the implant is implanted.",
    "25. The implant of claim 15, wherein an outer diameter of the core body progressively decreases in the direction from the head to the tip.",
    "26. The implant of claim 15, wherein an upper portion of the implant is roughened by media blasting and a lower portion of the implant comprising at least the tip has a smoother finish than the upper portion."
  ],
  "description_excerpt": "The present invention generally relates to bone implants, such as dental implants. More particularly, the present invention is directed to a self-osteotomizing and self-grafting bone implant which creates its own osteotomy and facilitates bone growth and integration of the implant.\n\nTraditionally, orthopedic medicine and dentistry have copied older established industries, like carpenters, to create fasteners for prosthetic items to be attached directly to bone in the form of various cone screws. In such non-medical, inanimate industries, as in cases of wood, plastic or metal, the principal of direct fasteners is based upon compressibility (wood), flexibility (plastic) or malleability (metal) or a combination of these properties being fastened to.\n\nIn all these cases, a hole is created in the receiving material slightly smaller than the selected screw or fastener for the job. The material shavings from these drillings have no cohesive or adhesive properties and are removed from the drilling site by the spiral action of the drill and discarded. The mass of the material that is removed by the drill is replaced mainly by the body of the screw or fastener.\n\nThe threads of the fastener take advantage of the three properties of compressibility, flexibility and malleability of the receiving material to engage it with large enough frictional force so as to secure the fastener to the recipient material.",
  "cpc": [
    "A61C 8/0025",
    "A61B 17/863",
    "A61C 8/0022",
    "A61C 8/0024",
    "A61C 8/006",
    "A61C 8/0068",
    "A61C 8/0069"
  ],
  "ipc": [
    "A61C 8/00",
    "A61B 17/86"
  ],
  "inventors": [
    "Parsa T. Zadeh"
  ],
  "filing_date": "2014-07-18",
  "publication_date": "2018-09-04",
  "grant_date": "2018-09-04",
  "priority_date": "2011-07-20",
  "application_number": "US-201414335398-A",
  "family_id": "51841587",
  "cited_by_count": 9,
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}