US6280191B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distractor suitable for permanent implantation into bone
Assignee: Individual
•
Filing: 1999-09-03
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Granted: 2001-08-28
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Expires: 2019-09-03
Abstract
Abstract The present invention relates to an osteogenic distractor suitable for indexed osteotomy following permanent implantation into bone. The osteogenic distractor may be a means for anchoring two or more sections of bone and a means for facilitating movement of one section of anchored bone relative to another section of anchored bone. Furthermore, the continuous tension on the bone produced by the distractor may facilitate stimulation of osteogenesis around the implant.
Inventors
- 👤 Christopher B. Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:46
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0003; A61C8/0004; A61C8/0006; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/60; A61B17/66; A61B17/663; A61B17/666; A61B17/64; A61B17/6433; A61B2017/00004; A61B2017/00535; A61B2017/00539; A61B2017/00544; A61B2017/00557; A61B90/00; A61B90/03; A61B2090/037; A61F; A61F2/00; A61F2/02; A61F2/28; A61F2002/2817; A61F2310/00; A61F2310/00389; A61F2310/00592; A61F2310/00796; A61F2310/00976; A61F2310/00982
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
110 words
An osteogenic distractor for distracting a first bone segment from a second bone segment suitable for indexed osteotomy following permanent implantation into bone, comprising: a first member anchored to said first bone segment; a second member anchored to said second bone segment; a screw for facilitating movement of said first member relative to said second member; and a spacer member made of bioabsorbable material configured to accept an indexed osteotomy through axes of said first and second members, said spacer having: a first surface initially contiguous with at least one surface of said first member, and a second surface initially contiguous with at least one surface of said second member.
Claim 2
Dependent Claim
110 words
An osteogenic distractor for distracting a first bone segment from a second bone segment suitable for indexed osteotomy following permanent implantation into bone, comprising: a first member anchored to said first bone segment; a second member anchored to said second bone segment; a screw for facilitating movement of said first member relative to said second member; and a spacer member made of bioabsorbable material configured to accept an indexed osteotomy through axes of said first and second members, said spacer having: a first surface initially contiguous with at least one surface of said first member, and a second surface initially contiguous with at least one surface of said second member.
Claim 3
Dependent Claim
19 words
The distractor of claim 1 , wherein said first member and said second member are made of bioabsorbable material.
Claim 4
Dependent Claim
51 words
The distractor of claim 1 , wherein said bioabsorbable material is selected from one or more of the group consisting of poly-D, L-lactic acid, polyethylene glycol, polydioxanone, polylactic acid, 70L/30DL polylactide, polyglycolide, poly(orthoester), calcium sodium metaphosphate, hydroxyapatite, calcium phosphate, polytetra fluoroethylene, collagen I, II, IX, X, and XI, durapatite, and hydrogel.
Claim 5
Dependent Claim
18 words
The distractor of claim 1 , further comprising a means for isolating said distractor from an external environment.
Claim 6
Dependent Claim
16 words
The distractor of claim 1 , wherein said distractor is capable of engaging a dental prosthesis.
Claim 7
Dependent Claim
29 words
The distractor of claim 1 , further comprising a means for stimulating growth of said bone segments into and around said first member and said second member following implantation.
Claim 8
Dependent Claim
13 words
The distractor of claim 1 , wherein said screw comprises pre-defined stop points.
Claim 9
Dependent Claim
15 words
The distractor of claim 1 , further comprising an automated mechanism for controlling said screw.
Claim 10
Dependent Claim
17 words
The distractor of claim 1 , further comprising a bioabsorbable cap for protecting soft tissue during distraction.
Claim 11
Dependent Claim
17 words
The distractor of claim 1 , wherein external surfaces of said first and second members are threaded.
Claim 12
Dependent Claim
24 words
The distractor of claim 8 , wherein a peripheral portion of said spacer member conforms to external threads of said first and second members.
Claim 13
Dependent Claim
30 words
The distractor of claim 8 , wherein a peripheral portion of said spacer member creates a gap in a thread pattern on external surfaces of said first and second members.
Claim 14
Dependent Claim
11 words
The distractor of claim 1 , further comprising a healing abutment.
Claim 15
Dependent Claim
19 words
The distractor of claim 11 , wherein said healing abutment provides a restoration post for accepting a dental restoration.
Claim 16
Dependent Claim
155 words
An osteogenic implant and distractor assembly for indexed osteotomy and permanent implantation into bone, the assembly comprising: first and second axially aligned implant members having external surfaces configured to anchor to bone; a bioabsorbable spacer member aligned with and between said first and second implant members; a bioabsobable protective cap aligned with and positioned about a distal end of said second implant member; and an axial screw threaded through a threaded axial bore in said first implant member, an axial bore in said spacer member, a threaded axial bore in said second implant member and into a partial bore in said protective cap; wherein said spacer member is configured to accept an indexed osteotomy through the axes of said first and second members, said spacer comprising: a first surface initially contiguous with at least one surface of said first member, and a second surface initially contiguous with at least one surface of said second member.
Claim 17
Dependent Claim
155 words
An osteogenic implant and distractor assembly for indexed osteotomy and permanent implantation into bone, the assembly comprising: first and second axially aligned implant members having external surfaces configured to anchor to bone; a bioabsorbable spacer member aligned with and between said first and second implant members; a bioabsobable protective cap aligned with and positioned about a distal end of said second implant member; and an axial screw threaded through a threaded axial bore in said first implant member, an axial bore in said spacer member, a threaded axial bore in said second implant member and into a partial bore in said protective cap; wherein said spacer member is configured to accept an indexed osteotomy through the axes of said first and second members, said spacer comprising: a first surface initially contiguous with at least one surface of said first member, and a second surface initially contiguous with at least one surface of said second member.
Claim 18
Dependent Claim
21 words
The osteogenic implant and distractor assembly of claim 11 , further comprising an O-ring for sealing the assembly within bone matter.
Claim 19
Independent Claim
156 words
A method for the distraction of bone comprising the steps of: providing a distractor assembly comprising a first member, a second member, a distraction screw in threaded engagement with the first and second members for causing movement of said first member relative to said second member, and a bioabsorbable spacer member having a first surface initially contiguous with a surface of said first member and a second surface initially contiguous with a surface of said second member when the distractor assembly is in an unextended state; placing said distractor assembly in an unextended state in a predetermined site where bone regeneration is required; backing said distraction screw out of said distraction device; performing an osteotomy through said bioabsorbable spacer member to form a distraction gap; replacing the distraction screw into threaded engagement with the first and second members following the osteotomy; and turning the distraction screw to extend said distractor assembly to widen said distraction gap.
Claim 20
Independent Claim
156 words
A method for the distraction of bone comprising the steps of: providing a distractor assembly comprising a first member, a second member, a distraction screw in threaded engagement with the first and second members for causing movement of said first member relative to said second member, and a bioabsorbable spacer member having a first surface initially contiguous with a surface of said first member and a second surface initially contiguous with a surface of said second member when the distractor assembly is in an unextended state; placing said distractor assembly in an unextended state in a predetermined site where bone regeneration is required; backing said distraction screw out of said distraction device; performing an osteotomy through said bioabsorbable spacer member to form a distraction gap; replacing the distraction screw into threaded engagement with the first and second members following the osteotomy; and turning the distraction screw to extend said distractor assembly to widen said distraction gap.
Claim 21
Dependent Claim
19 words
The method of claim 15 whereby said osteotomy is performed prior to the integration of said distractor into bone.
Claim 22
Dependent Claim
34 words
The method of claim 15 whereby the distraction screw placed into said distraction device following the osteotomy is the same distraction screw that was backed out of said distraction device prior to the osteotomy.
Claim 23
Dependent Claim
37 words
The method of claim 15 whereby the distraction screw placed into said distraction device following the osteotomy is a different distraction screw than the screw that was backed out of said distraction device prior to the osteotomy.
Claim 24
Dependent Claim
18 words
The method of claim 15 whereby said distraction gap is widened between 0.25 mm and 1.0 mm daily.
Claim 25
Dependent Claim
22 words
The method of claim 15 wherein said osteotomy is an indexed osteotomy performed blindly between said first member and said second member.
Claim 26
Dependent Claim
19 words
The method of claim 15 further comprising the step of engaging said distraction device to widen said distraction gap.
References Cited (Backward Citations)
US5139424A
Cited
US5108394A
Cited
US5540687A
Cited
US5527183A
Cited
US5584695A
Cited
US5899696A
Cited
US5846245A
Cited
US5839899A
Cited
US5704939A
Cited
US5700263A
Cited
US5807382A
Cited
US5810812A
Cited
US5976142A
Cited
US5899940A
Cited
US5961329A
Cited
US6050819A
Cited
US6126662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-08-27 | 2005-02-26 | 2005-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-08-27 | 2009-02-26 | 2009-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-08-27 | 2013-02-26 | 2013-08-28 | $7700.00 | Window Closed / Lapsed |