US6001100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bone block fixation implant
Assignee: Bionx Implants Oy
•
Filing: 1997-08-19
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Granted: 1999-12-14
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Expires: 2017-08-19
Abstract
Abstract In the present invention, a bioabsorbable implant is described, which implant is manufactured of bioabsorbable polymer, copolymer, polymer alloy or fiber reinforced and/or particle filled composite, which implant is pushed into a hole or drill canal made in a bone, for fixing a bone graft into the drillhole, wherein the implant comprises: (1) at least one elongated body, (2) at least one gripping element to lock the implant into the drillhole, and (3) a platform surface for location of a bone block between the implant and the wall of the drillhole. The implant also may be equipped with (4) an additional arresting means, which effectively prevents the slipping of the bone block out of the drillhole.
Inventors
- 👤 Mark Sherman
- 👤 Auvo Kaikkonen
- 👤 Timo Pohjonen
- 👤 Pertti Tormala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:56
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/08; A61F2/0811; A61F2002/0847; A61F2002/0858; A61F2002/087; A61F2002/0876; A61F2002/0888; A61F2/28; A61F2002/2835; A61F2/30; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30062; A61F2/30767; A61F2/30771; A61F2002/30841; A61F2210/00; A61F2210/0004
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
84 words
A surgical implant for fixing a bone block into a drillhole in a bone, said implant comprising: at least one elongated body manufactured from bioabsorbable polymer, copolymer, polymer alloy or composite; at least one gripping element on the elongated body, for locking the implant into the drillhole; and a platform surface on the elongated body for receiving the bone block, wherein said elongated body, gripping element and platform surface are integrally attached, and said elongated body is capable of being pushed into the drillhole.
Claim 2
Dependent Claim
84 words
A surgical implant for fixing a bone block into a drillhole in a bone, said implant comprising: at least one elongated body manufactured from bioabsorbable polymer, copolymer, polymer alloy or composite; at least one gripping element on the elongated body, for locking the implant into the drillhole; and a platform surface on the elongated body for receiving the bone block, wherein said elongated body, gripping element and platform surface are integrally attached, and said elongated body is capable of being pushed into the drillhole.
Claim 3
Dependent Claim
23 words
A surgical implant according to claim 1, further comprising an arresting means for preventing slipping of the bone block out of the drillhole.
Claim 4
Dependent Claim
19 words
A surgical implant according to claim 1, wherein said at least one gripping element comprises at least one protuberance.
Claim 5
Dependent Claim
19 words
A surgical implant according to claim 1, wherein said at least one gripping element comprises at least one thread.
Claim 6
Dependent Claim
20 words
A surgical implant according to claim 1, wherein said at least one gripping element comprises at least one transverse ridge.
Claim 7
Dependent Claim
19 words
A surgical implant according to claim 1, wherein said at least one gripping element comprises at least one barb.
Claim 8
Dependent Claim
16 words
A surgical implant according to claim 2, wherein said arresting means comprises at least one protuberance.
Claim 9
Dependent Claim
16 words
A surgical implant according to claim 2, wherein said arresting means comprises at least one barb.
Claim 10
Dependent Claim
16 words
A surgical implant according to claim 2, wherein said arresting means comprises at least one threshold.
Claim 11
Dependent Claim
15 words
A surgical implant according to claim 1, wherein said elongated body is cylindrical in form.
Claim 12
Dependent Claim
13 words
A surgical implant according to claim 1, wherein said elongated body is porous.
Claim 13
Dependent Claim
20 words
A surgical implant according to claim 1, wherein said implant is capable of releasing a drug or other bioactive substance.
Claim 14
Dependent Claim
61 words
A method of inserting the surgical implant of claim 1 and a bone block into a drillhole in a bone, comprising the steps of: a. attaching the bone block to the elongated body; b. pushing the bone block and elongated body into the drillhole; and c. locking the implant into the drillhole by means of the gripping means on the implant.
Claim 15
Dependent Claim
56 words
A method of inserting the surgical implant of claim 1 and a bone block into a drillhole in a bone, comprising the steps of: a. inserting the bone block into the drillhole; b. pushing the elongated body into the drillhole; c. locking the implant into the drillhole by means of the gripping means on the implant.
Claim 16
Independent Claim
177 words
A method for securing a bone graft in an endosteal tunnel comprising: drilling an endoseal bore of a size sufficient to form a space between the bone graft and a wall of the bore when the graft is inserted in the bore; positioning the bone graft in the bore such that a space is formed between the graft and a wall of the bore; selecting a biocompatible bioabsorbable fixation device comprising at least one elongated body manufactured from bioabsorbable polymer, copolymer, polymer alloy or composite, at least one gripping element on the elongated body, for locking the implant into the bore and a platform surface on the elongated body for receiving the bone block; pushing the fixation device into the space between the bone graft and the wall of the bore so that the gripping element contacts the wall of the bore and the platform surface contacts the surface of the bone block and the device is located within the bore so that an interference fit, that resists withdrawal of the graft from the bore, is formed.
Claim 17
Independent Claim
177 words
A method for securing a bone graft in an endosteal tunnel comprising: drilling an endoseal bore of a size sufficient to form a space between the bone graft and a wall of the bore when the graft is inserted in the bore; positioning the bone graft in the bore such that a space is formed between the graft and a wall of the bore; selecting a biocompatible bioabsorbable fixation device comprising at least one elongated body manufactured from bioabsorbable polymer, copolymer, polymer alloy or composite, at least one gripping element on the elongated body, for locking the implant into the bore and a platform surface on the elongated body for receiving the bone block; pushing the fixation device into the space between the bone graft and the wall of the bore so that the gripping element contacts the wall of the bore and the platform surface contacts the surface of the bone block and the device is located within the bore so that an interference fit, that resists withdrawal of the graft from the bore, is formed.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-12-13 | 2003-06-14 | 2003-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-12-13 | 2007-06-14 | 2007-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-12-13 | 2011-06-14 | 2011-12-14 | $7700.00 | Window Closed / Lapsed |