US6187009B1
Expired / Lapsed
US
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Osteosynthesis implant
Assignee: Synthes USA LLC
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Filing: 1997-02-28
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Granted: 2001-02-13
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Expires: 2017-02-28
Abstract
Abstract The osteosynthesis implant according to the present invention includes a base body in the form of a plate having an upper side and a lower side intended for contact with the bone. The lower side has extensions for insertion in the bone, and their outer surface is provided with a retaining structure. The entire implant is made of an bioabsorbable material. The bone fragments to be secured can be joined easily and reliably with the implant according to this invention and no explantation is necessary after osteosynthesis.
Inventors
- 👤 Daniel Herzog
- 👤 Bernhard Kapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:45
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/80; A61B17/809; A61B17/064; A61B17/0642; A61B17/0643; A61B17/688; A61B17/8085; A61B2017/00004; A61B2017/0641; A61B2017/0647; A61B2017/0648; Y; Y10; Y10S; Y10S606/00; Y10S606/907; Y10S606/908
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
85 words
An osteosynthesis implant comprising: a body with a center and a periphery and having a vaulted upper side and a lower side for contact with bone, a thickness of the body decreasing from the center to the periphery; and first and second extensions attached to the lower side of the body for implantation in bone, each of the first and second extensions having an outer surface with a plurality of retaining members for securement in bone, wherein the implant is made of a bioabsorbable material.
Claim 2
Dependent Claim
85 words
An osteosynthesis implant comprising: a body with a center and a periphery and having a vaulted upper side and a lower side for contact with bone, a thickness of the body decreasing from the center to the periphery; and first and second extensions attached to the lower side of the body for implantation in bone, each of the first and second extensions having an outer surface with a plurality of retaining members for securement in bone, wherein the implant is made of a bioabsorbable material.
Claim 3
Dependent Claim
16 words
The implant of claim 1 wherein the first and second extensions are perpendicular to the body.
Claim 4
Dependent Claim
15 words
The implant of claim 1 wherein the first and second extensions converge toward one another.
Claim 5
Dependent Claim
34 words
The implant of claim 3 wherein each of the first and second extensions forms an angle of less than around 20° with respect to a line normal to the lower side of the body.
Claim 6
Dependent Claim
25 words
The implant of claim 1 wherein each of the first and second extensions has a substantially cylindrical shape and a distal end with a tip.
Claim 7
Dependent Claim
69 words
The implant of claim 1 wherein each of the retaining members has a sawtooth shape with a first surface forming a first angle with a plane parallel to the lower side of the body and a second surface forming a second angle with a plane parallel to the lower side of the body, the first surface being closer to the lower side of the body than the second surface.
Claim 8
Dependent Claim
26 words
The implant of claim 6 wherein the absolute value of the first angle is less than or equal to the absolute value of the second angle.
Claim 9
Dependent Claim
12 words
The implant of claim 6 wherein the first angle is about 0°.
Claim 10
Dependent Claim
11 words
The implant of claim 6 wherein the first angle is positive.
Claim 11
Dependent Claim
11 words
The implant of claim 6 wherein the first angle is negative.
Claim 12
Dependent Claim
14 words
The implant of claim 1 wherein each of the retaining members is a barb.
Claim 13
Dependent Claim
24 words
The implant of claim 1 wherein each of the retaining members is a truncated conical section widening towards the lower side of the body.
Claim 14
Dependent Claim
11 words
The implant of claim 1 wherein the body is a mesh.
Claim 15
Dependent Claim
46 words
The implant of claim 1 wherein the body has a substantially rectangular shape and the first extension is attached to a first end of the lower side of the body and the second extension is attached to second end of the lower side of the body.
Claim 16
Dependent Claim
86 words
The implant of claim 1 further comprising a third extension attached to the lower side of the body for implantation in bone and having an outer surface with a plurality of retaining members for securement in bone and wherein the body has a boomerang shape with the first extension attached to a first end of the lower side of the body, the second extension attached to second end of the lower side of the body, and the third extension attached under the center of the body.
Claim 17
Dependent Claim
51 words
The implant of claim 1 further comprising third and fourth extensions attached to the lower side of the body for implantation in bone, each of the third and fourth extensions having an outer surface with a plurality of retaining members for securement in bone, wherein the body has a star shape.
Claim 18
Dependent Claim
21 words
The implant of claim 1 wherein each of the first and second extensions has a hollow interior with a central channel.
Claim 19
Dependent Claim
17 words
The implant of claim 17 wherein each of the central channels is closed at a lower end.
Claim 20
Dependent Claim
17 words
The implant of claim 17 wherein each of the central channels is open at a lower end.
Claim 21
Dependent Claim
16 words
The implant of claim 17 wherein each of the central channels has a constant cross section.
Claim 22
Dependent Claim
21 words
The implant of claim 17 wherein each of the central channels has a cross section that tapers toward a lower end.
Claim 23
Dependent Claim
21 words
The implant of claim 17 wherein each of the central channels has a cross section that tapers toward an upper end.
Claim 24
Dependent Claim
18 words
The implant of claim 17 wherein at least a portion of each of the central channels is threaded.
Claim 25
Dependent Claim
35 words
The implant of claim 23 further comprising first and second spreading bodies, each of the spreading bodies having a head and a stem insertable in one of the central channels for expanding the respective extension.
Claim 26
Dependent Claim
43 words
The implant of claim 24 wherein the stem of each of the spreading bodies is threaded and the head of each of the spreading bodies has a recess for coupling with a driver to insert the spreading body in the respective central channel.
Claim 27
Dependent Claim
17 words
The implant of claim 24 wherein each of the spreading bodies is made of a bioabsorbable material.
Claim 28
Dependent Claim
40 words
The implant of claim 17 further comprising a closing part with a base connecting first and second prongs, each of the prongs configured and dimensioned for insertion in one of the first and second extensions to expand the respective extension.
Claim 29
Dependent Claim
29 words
The implant of claim 17 wherein at least one of the first and second extensions has a longitudinal slot for allowing the extension to spread upon insertion in bone.
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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) | 2004-02-13 | 2004-08-14 | 2005-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-02-13 | 2008-08-14 | 2009-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-02-13 | 2012-08-14 | 2013-02-13 | $7700.00 | Window Closed / Lapsed |