Bi-cortical dental implant

• US 6,450,812 B1
• Filed: 08/09/2001
• Issued: 09/17/2002
• Est. Priority Date: 09/09/2000
• Status: Expired due to Fees

• Current Assignee: Advanced Dental Engineering Limited
• Original Assignee: Advanced Dental Engineering Limited
• Inventors: Laster, Zvi, Girshovich, Simon, Baruc, Daniel
• Primary Examiner(s): O'Connor, Cary E.
• Application Number:
  US09/925,390
• Publication Number:
  US 20020031747A1
• Time in Patent Office: 404 Days
• Field of Search: 433/75, 433/173, 433/174, 433/175, 433/176
• US Class Current: 433/173
• CPC Class Codes: A61C 1/084 of implanting tools
• CPC Class Codes: A61C 8/0009 Consolidating prostheses or implants, e.g. by means of stabilising pins A61C8/0031 takes precedence
• CPC Class Codes: A61C 8/001 Multiple implanting technique, i.e. multiple component implants introduced in the jaw from different directions

Abstract

A dental implant which contains a bi-cortical anchor apparatus for insertion into a jawbone, the anchor apparatus including a tool receptor for interacting with a tool which facilitates insertion of the apparatus. An implant member arranged for insertion into a jawbone, the member containing a cervix to secure a dental prosthesis and a through conduit to support an anchor apparatus. A complementary system including an implant member and a template, the latter meshing with and helping align the implant member. A method for inserting the implant member into a bore in the jawbone. The method includes drilling a channel in the jawbone through a drill-bit guide channel and inserting a bi-cortical anchor apparatus through the channel and through a conduit of an implant member, anchoring at least two portions of the anchor apparatus.

Claims

1. A complementary system, which includes:

an implant member, having;

a portion which protrudes from the jawbone, when said implant member is installed in the jawbone; and

a through conduit at a far portion with respect to an operator, invisible to the operator, when said implant member is installed in the jawbone; and

a template, having;

a distal vertical section, running generally along a distal cortical plate of the jawbone, operative to press against the distal cortical plate;

a proximal vertical section, running generally along a proximal cortical plate of the jawbone, which includes;

a drill-bit-channel housing; and

a drill-bit guide channel, located within said drill-bit-channel housing; and

a lateral section, arranged to mesh with said portion of said implant member which protrudes from the jawbone, thus aligning said drill-bit guide channel with said through conduit of said implant member.

2. A complementary system, according to claim 1, wherein said drill-bit guide channel is further operative to guide bi-cortical anchor apparatus for insertion into the jawbone.

3. A complementary system, according to claim 1, wherein said portion which protrudes from the jawbone is a mount that is provided with the implant member.

4. A complementary system, according to claim 1, wherein said portion, which protrudes from the jawbone, is a superstructure of the implant member.

5. A complementary system, according to claim 1 and further including a slide mechanism for adjusting to jawbones of different widths.

6. A complementary system, according to claim 1 and further including at least one spike arranged for piercing a cortical plate selected from a group which consists of said distal cortical plate and said proximal cortical plate, for increasing the hold on the jawbone.

7. A complementary system according to claim 6, wherein said at least one spike includes a plurality of spikes.

8. A complementary system, according to claim 1, wherein said at least one spike includes a plurality of spikes.

9. A complementary system, according to claim 1, wherein said drill-bit-channel housing is formed as a hollow bolt, arranged to selectably press against said proximal cortical plate.

10. A complementary system, according to claim 9 wherein said drill-bit guide channel, located within said hollow bolt, is further operative to guide bi-cortical anchor apparatus for insertion into the jawbone.

11. A complementary system, according to claim 1, wherein said distal vertical section, running generally along said distal cortical plate of the jawbone, operative to press against it, is a leaf spring.

12. A complementary system, according to claim 1, and further including a ratchet, which is arranged to clamp said template and said distal cortical plate wherein said distal vertical section, running generally along said distal cortical plate of the jawbone, operative to press against it, is a distal prong of said ratchet.

13. A complementary system, according to claim 12, wherein said ratchet further includes a locking mechanism, arranged for jawbones of different widths.

14. A complementary system, according to claim 12, wherein said ratchet is a three prong ratchet, having two proximal prongs, to the left and to the right of said drill-bit guide channel housing, along said y-axis, and having a single distal prong.

15. A complementary system, according to claim 1, wherein said implant member is arranged for insertion into a jawbone along a vertical axis of a tooth, said implant member further including:

near and far portions;

a cervix, at said near portion, arranged to secure a dental prosthesis thereto;

said through conduit further arranged to support a bi-cortical anchor apparatus, without locking thereto, separated from said cervix with a solid barrier, which acts as a bacteria barrier; and

said bi-cortical anchor apparatus, arranged for insertion into a jawbone, from a proximal cortical plate towards a distal cortical plate, said bi-cortical anchor apparatus including;

a distal portion, having a distal effective diameter and a distal surface, operable to bite into and engage with virgin tissue of the distal cortical plate, and anchor tightly, thereto;

a mid-portion having a mid-portion effective diameter and a mid-portion surface, operable to support said implant member without locking thereto;

a proximal portion, having a proximal effective diameter, which is somewhat larger than both said distal and mid-portion effective diameters, and having a proximal surface which is operable to bite into and engage with virgin tissue of the proximal cortical plate, and anchor tightly, thereto; and

a tool receptor, at the proximal-most end of said proximal portion, for interacting with a tool, to facilitate the insertion of said apparatus.

16. A complementary system, according to claim 1, wherein said implant member is arranged for insertion into a jawbone, said implant member further including:

near and far portions;

a cervix, at said near portion, arranged to secure a dental prosthesis thereto;

said through conduit further arranged to support bi-cortical anchor apparatus, without locking thereto, separated from said cervix with a solid barrier, which acts as a bacteria barrier; and

said bi-cortical anchor apparatus, arranged for insertion into a jawbone, from a proximal cortical plate towards a distal cortical plate, said bi-cortical anchor apparatus including;

a distal portion, having a distal effective diameter and a distal surface, operable to bite into and engage with a tissue of the distal cortical plate, and anchor tightly, thereto;

a mid-portion, having a mid-portion effective diameter and a mid-portion surface, operable to support an implant member without locking thereto;

a proximal portion, having a proximal effective diameter and a proximal surface which is operable to bite into and engage with a tissue of the proximal cortical plate, and anchor tightly, thereto; and

a tool receptor, at the proximal-most end of said proximal portion, for interacting with a tool, to facilitate the insertion of said apparatus.

17. Bi-cortical anchor apparatus, arranged for insertion into a jawbone, from a proximal cortical plate towards a distal cortical plate, said bi-cortical anchor apparatus including:

a distal portion, having a distal effective diameter and a distal surface, operable to bite into and engage with virgin tissue of the distal cortical plate, and anchor tightly, thereto;

a mid portion, having a mid-portion effective diameter and a mid-portion surface, operable to support an implant member without locking thereto;

a proximal portion, having a proximal effective diameter, which is somewhat larger than both said distal and mid-portion effective diameters, and having a proximal surface which is operable to bite into and engage with virgin tissue of the proximal cortical plate, and anchor tightly, thereto; and

a tool receptor, at the proximal-most end of said proximal portion, for interacting with a tool, to facilitate the insertion of said apparatus, said tool receptor being a threaded internal cervix, arranged to interact with a tool, said tool having;

proximal and distal portions with respect to the operator;

a threaded surface, at said distal portion, which complements said threaded internal cervix;

a finger-gripping portion at said proximal portion; and

a stem, connecting said proximal and distal portions, and

wherein said tool is operable to guide said apparatus through a template drill-bit guide channel.

18. Bi-cortical anchor apparatus, arranged for insertion into a jawbone, from a proximal cortical plate towards a distal cortical plate, said bi-cortical anchor apparatus including:

a distal portion, having a distal effective diameter and a distal surface, operable to bite into and engage with a tissue of the distal cortical plate, and anchor tightly, thereto;

a mid portion, having a mid-portion effective diameter and a mid-portion surface, operable to support an implant member without locking thereto;

a proximal portion, having a proximal effective diameter and a proximal surface which is operable to bite into and engage with a tissue of the proximal cortical plate, and anchor tightly, thereto; and

a tool receptor, at the proximal-most end of said proximal portion, for interacting with a tool, to facilitate the insertion of said apparatus, and

wherein said proximal and distal effective diameters are substantially the same, and wherein said mid-portion effective diameter is somewhat smaller.

19. Bi-cortical anchor apparatus, arranged for insertion into a jawbone, from a proximal cortical plate towards a distal cortical plate, said bi-cortical anchor apparatus including:

a distal portion, having a distal effective diameter and a distal surface, operable to bite into and engage with a tissue of the distal cortical plate, and anchor tightly, thereto;

a mid portion, having a mid-portion effective diameter and a mid-portion surface, operable to support an implant member without locking thereto;

a proximal portion, having a proximal effective diameter and a proximal surface which is operable to bite into and engage with a tissue of the proximal cortical plate, and anchor tightly, thereto; and

a tool receptor, at the proximal-most end of said proximal portion, for interacting with a tool, to facilitate the insertion of said apparatus, wherein said tool receptor is a threaded internal cervix, arranged to interact with a tool, having;

proximal and distal portions with respect to the operator;

a threaded surface, at said distal portion, which complements said threaded internal cervix;

a finger-gripping portion at said proximal portion; and

a stem, connecting said proximal and distal portions,

wherein said tool is operable to guide said apparatus through a template drill-bit guide channel.

20. A method of installing an implant member which includes:

drilling a bore from bone crest into the jawbone;

inserting an implant member, having a through conduit, into the bore;

positioning a template, while meshing a lateral section of the template with a portion of the implant member which protrudes from the jaw, thus aligning a drill-bit guide channel with the through conduit of the implant member;

clamping said jawbone between a proximal vertical section and a distal vertical section of the template and between the proximal vertical section of the template and at least one distal leaf spring;

drilling a channel in the jawbone, through the drill-bit guide channel of the template;

inserting bi-cortical anchor apparatus from the proximal cortical plate, through the bone channel and then through conduit of the implant member, towards the distal cortical plate, for bi-cortical retention, while self-tapping an internal thread into the bone channel;

anchoring the distal portion of the bi-cortical anchor apparatus, by biting into tissue of the distal cortical plate and engaging thereto; and

anchoring the proximal portion of the bi-cortical anchor apparatus by biting into tissue of the proximal cortical plate and engaging thereto.

21. A method of installing an implant member which includes:

drilling a bore from bone crest into the jawbone;

inserting an implant member, having a through conduit, into the bore;

positioning a template, while meshing a lateral section of the template with a portion of the implant member which protrudes from the jaw, thus aligning a drill-bit guide channel with the through conduit of the implant member;

clamping said jawbone between a proximal vertical section and a distal vertical section of the template with a ratchet;

drilling a channel in the jawbone, through the drill-bit guide channel of the template;

inserting bi-cortical anchor apparatus from the proximal cortical plate, through the bone channel and then through conduit of the implant member, towards the distal cortical plate, for bi-cortical retention, while self-tapping an internal thread into the bone channel;

anchoring the distal portion of the bi-cortical anchor apparatus, by biting into tissue of the distal cortical plate and engaging thereto; and

anchoring the proximal portion of the bi-cortical anchor apparatus by biting into tissue of the proximal cortical plate and engaging thereto.

22. A method of installing an implant member which includes:

drilling a bore from bone crest into the jawbone;

inserting an implant member, having a through conduit, into the bore,

positioning a template, while meshing a lateral section of the template with a portion of the implant member which protrudes from the jaw, thus aligning a drill-bit guide channel with the through conduit of the implant member;

clamping said jawbone between a proximal vertical section and a distal vertical section of the template and piercing at least one cortical plate with spikes;

drilling a channel in the jawbone, through the drill-bit guide channel of the template;

inserting bi-cortical anchor apparatus from the proximal cortical plate, through the bone channel and then through conduit of the implant member, towards the distal cortical plate, for bi-cortical retention, while self-tapping an internal thread into the bone channel;

anchoring the distal portion of the bi-cortical anchor apparatus, by biting into tissue of the distal cortical plate and engaging thereto; and

anchoring the proximal portion of the bi-cortical anchor apparatus by biting into tissue of the proximal cortical plate and engaging thereto.

23. A method of installing an implant member which includes:

drilling a bore from bone crest into the jawbone and into the sinus cavity;

inserting an implant member, having a through conduit, into the bore;

positioning a template, while meshing a lateral section of the template with a portion of the implant member which protrudes from the jaw, thus aligning a drill-bit guide channel with the through conduit of the implant member;

drilling a channel in the jawbone, through the drill-bit guide channel of the template;

inserting bi-cortical anchor apparatus from the proximal cortical plate, through the bone channel and then through conduit of the implant member, towards the distal cortical plate, for bi-cortical retention, while self-tapping an internal thread into the bone channel;

anchoring the distal portion of the bi-cortical anchor apparatus, by biting into tissue of the distal cortical plate and engaging thereto; and

anchoring the proximal portion of the bi-cortical anchor apparatus by biting into tissue of the proximal cortical plate and engaging thereto.

24. A complementary system, which includes:

an implant member, having;

a portion which protrudes from the jawbone, when said implant member is installed in the jawbone; and

a through conduit at a far portion with respect to an operator, invisible to the operator, when said implant member is installed in the jawbone; and

a template, having;

a distal vertical section, running generally along a distal cortical plate of the jawbone, operative to press against the distal cortical plate, and wherein said distal vertical section is a leaf spring;

a proximal vertical section, running generally along a proximal cortical plate of the jawbone, which includes;

a drill-bit-channel housing;

a drill-bit guide channel, located within said drill-bit-channel housing; and

a lateral section, arranged to mesh with said portion of said implant member which protrudes from the jawbone, thus aligning said drill-bit guide channel with said through conduit of said implant member.

25. A complementary system, which includes:

an implant member, having;

a portion which protrudes from the jawbone, when said implant member is installed in the jawbone; and

a through conduit at a far portion with respect to an operator, invisible to the operator, when said implant member is installed in the jawbone; and

a template, having;

a distal vertical section, running generally along a distal cortical plate of the jawbone, operative to press against the distal cortical plate;

a proximal vertical section, running generally along a proximal cortical plate of the jawbone, which includes;

a drill-bit-channel housing; and

a drill-bit guide channel, located within said drill-bit-channel housing;

a lateral section, arranged to mesh with said portion of said implant member which protrudes from the jawbone, thus aligning said drill-bit guide channel with said through conduit of said implant member; and

a ratchet, which is arranged to clamp said template and said distal cortical plate wherein said distal vertical section, running generally along said distal cortical plate of the jawbone, operative to press against it, is a distal prong of said ratchet.

26. A complementary system according to claim 25, wherein said ratchet further includes a locking mechanism, arranged for jawbones of different widths.

27. A complementary system according to claim 25, wherein said ratchet is a three prong ratchet, having two proximal prongs, to the left and to the right of said drill-bit guide channel housing, along said y-axis, and having a single distal prong.

28. A complementary system, which includes:

an implant member, having;

a portion which protrudes from the jawbone, when said implant member is installed in the jawbone; and

a through conduit at a far portion with respect to an operator, invisible to the operator, when said implant member is installed in the jawbone; and

a template, having;

a distal vertical section, running generally along a distal cortical plate of the jawbone, operative to press against the distal cortical plate;

a proximal vertical section, running generally along a proximal cortical plate of the jawbone, which includes;

a drill-bit-channel housing; and

a drill-bit guide channel, located within said drill-bit-channel housing;

a lateral section, arranged to mesh with said portion of said implant member which protrudes from the jawbone, thus aligning said drill-bit guide channel with said through conduit of said implant member; and

at least one spike arranged for piercing a cortical plate selected from a group which consists of said distal cortical plate and said proximal cortical plate, for increasing the hold on the jawbone.