US4573458A
Expired / Lapsed
US
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Bone fixation plate
Assignee: Zimmer Technology Inc
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Filing: 1985-02-05
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Granted: 1986-03-04
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Expires: 2005-02-05
Abstract
Abstract A bone plate for bridging two portions of a broken bone which can be formed to fit and retain many irregular surfaces and yet retain optimum strength. The bone plate is particularly adaptable for fracture in the pelvic and acetabular area, although the plate is also adaptable for other bone areas. The bone plate is comprised of a solid elongated rod portion and a plurality of screw retaining areas extending from the rod portion and spaced apart from each other along the rod portion, forming rod segments between the protruding screw retaining areas. The plates may be of predetermined lengths and curves to fit specific bones and contours or the plates may be supplied as straight stock that may be cut and contoured according to specific needs.
Inventors
- 👤 Jerry L. Lower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:40
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/80; A61B17/8085; A61B17/8061; A61B17/8066
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
92 words
An implantable bone plate comprising: (a) a solid, elongated rod, void of any holes throughout its length; and (b) a plurality of integral tab members protruding laterally from said solid rod, said tab members having an aperture therein for receiving a bone screw or the like, and wherein said tab members have a thickness less than the thickness of the rod and wherein said rod includes a bottom bearing surface and wherein said tab members have a bottom surface extending in substantially the same plane as the bearing surface of the rod.
Claim 2
Dependent Claim
92 words
An implantable bone plate comprising: (a) a solid, elongated rod, void of any holes throughout its length; and (b) a plurality of integral tab members protruding laterally from said solid rod, said tab members having an aperture therein for receiving a bone screw or the like, and wherein said tab members have a thickness less than the thickness of the rod and wherein said rod includes a bottom bearing surface and wherein said tab members have a bottom surface extending in substantially the same plane as the bearing surface of the rod.
Claim 3
Dependent Claim
18 words
An implantable bone plate as described in claim 1 wherein said rod has a constant cross-sectional configuration throughout.
Claim 4
Dependent Claim
28 words
An implantable bone plate as described in claim 1 wherein said protruding tab members are spaced apart along the length of the rod and define rod segments therebetween.
Claim 5
Dependent Claim
19 words
An implantable bone plate as described in claim 3 wherein said rod segments have a constant cross-sectional configuration throughout.
Claim 6
Dependent Claim
27 words
An implantable bone plate as described in claim 4 wherein the minimum length of each rod segment is substantially equal to the diameter of the rod segment.
Claim 7
Dependent Claim
19 words
An implantable bone plate as described in claim 2 wherein said cross-sectional configuration of the rod is substantially circular.
Claim 8
Dependent Claim
27 words
An implantable bone plate as described in claim 2 wherein said rod has a semi-cylindrical upper portion and a lower portion integrally connected to said upper portion.
Claim 9
Dependent Claim
28 words
An implantable bone plate as described in claim 7 wherein the thickness of the rod is less than or equal to the diameter of the cylindrical upper portion.
Claim 10
Dependent Claim
16 words
An implantable bone plate as described in claim 7 wherein said bearing surface is substantially flat.
Claim 11
Dependent Claim
37 words
An implantable bone plate as described in claim 1 wherein the elongated rod includes a cross-section in which the outer surface of the rod is of approximately equal distance about the center axis of the elongated rod.
Claim 12
Dependent Claim
24 words
An implantable elongated bone plate as described in claim 1 wherein said protruding tab members are alternately spaced on opposite sides of the rod.
Claim 13
Dependent Claim
28 words
An implantable elongated bone plate as described in claim 1 wherein said protruding tab members are spaced in a parallel relationship along one side of the elongated rod.
Claim 14
Dependent Claim
42 words
An implantable elongated bone plate as described in claim 1 wherein said plurality of protruding tab members are spaced in pairs, with each member of a pair positioned on an opposite side of the rod from the other member of said pair.
Claim 15
Dependent Claim
101 words
An implantable bone plate comprising: (a) a solid, elongated rod, void of any holes throughout its length; and (b) a plurality of integral tab members protruding laterally from said solid rod, said tab members having an aperture therein for receiving a bone screw of the like, and wherein said tab members have a thickness less than the thickness of the rod, and wherein said rod has a constant cross-sectional configuration throughout and said cross-sectional configuration is substantially circular except along the bottom surface of the rod which flattens substantially out to a planar portion perpendicular to the thickness of the rod.
Claim 16
Dependent Claim
101 words
An implantable bone plate comprising: (a) a solid, elongated rod, void of any holes throughout its length; and (b) a plurality of integral tab members protruding laterally from said solid rod, said tab members having an aperture therein for receiving a bone screw of the like, and wherein said tab members have a thickness less than the thickness of the rod, and wherein said rod has a constant cross-sectional configuration throughout and said cross-sectional configuration is substantially circular except along the bottom surface of the rod which flattens substantially out to a planar portion perpendicular to the thickness of the rod.
Claim 17
Dependent Claim
35 words
An implantable elongated bone plate as described in claim 14 wherein the screw retaining areas have a substantially flat bottom surface extending in substantially the same plane as the bottom surface of the elongated rod.
Claim 18
Dependent Claim
88 words
An implantable bone plate comprising: (a) a solid, elongated rod, void of any holes throughout its length; and (b) a plurality of integral screw retaining areas protruding laterally from said solid rod, said rod having a constant cross-sectional configuration throughout, said cross-sectional configuration being substantially circular except along the bottom surface of the rod which flattens substantially out to a planar portion perpendicular to the thickness of the rod, wherein at least 60% of the ideal circular cross-sectional configuration still remains before blending into the flat bottom surface.
Claim 19
Dependent Claim
88 words
An implantable bone plate comprising: (a) a solid, elongated rod, void of any holes throughout its length; and (b) a plurality of integral screw retaining areas protruding laterally from said solid rod, said rod having a constant cross-sectional configuration throughout, said cross-sectional configuration being substantially circular except along the bottom surface of the rod which flattens substantially out to a planar portion perpendicular to the thickness of the rod, wherein at least 60% of the ideal circular cross-sectional configuration still remains before blending into the flat bottom surface.
Claim 20
Dependent Claim
29 words
An implantable elongated bone plate as described in claim 3 wherein said rod segments are at least 3 mm in length and no greater than 25 mm in length.
Claim 21
Dependent Claim
27 words
An implantable elongated bone plate as described in claim 3 wherein the rod has a diameter of at least 3 mm and no greater than 6 mm.
Claim 22
Dependent Claim
134 words
An implantable bone plate comprising: (a) a solid, elongated rod, void of any holes throughout its length, said rod including a bottom bearing surface; and (b) a plurality of integral tab members protruding laterally from said solid rod and having a bottom surface extending in substantially the same plane as the bearing surface of the rod, said tab members having an aperture therein for receiving a bone screw or the like, and wherein said tab members have a thickness less than the thickness of the rod, said tab members spaced apart from each other along the length of the rod, said rod having a constant, substantially circular cross-sectional configuration throughout its length, enabling the rod to be easily contoured to fit particular contours of the bone to which the plate is to be affixed.
Claim 23
Dependent Claim
134 words
An implantable bone plate comprising: (a) a solid, elongated rod, void of any holes throughout its length, said rod including a bottom bearing surface; and (b) a plurality of integral tab members protruding laterally from said solid rod and having a bottom surface extending in substantially the same plane as the bearing surface of the rod, said tab members having an aperture therein for receiving a bone screw or the like, and wherein said tab members have a thickness less than the thickness of the rod, said tab members spaced apart from each other along the length of the rod, said rod having a constant, substantially circular cross-sectional configuration throughout its length, enabling the rod to be easily contoured to fit particular contours of the bone to which the plate is to be affixed.
Claim 24
Dependent Claim
79 words
An implantable bone plate comprising: (a) a solid, elongated rod, said rod including a bottom bearing surface; and (b) a plurality of integral tab members extending laterally from said solid rod and having a bottom surface extending in substantially the same plane as the bearing surface of the rod, said tab members having an aperture therein for receiving a bone screw or the like, and wherein said tab members have a thickness less than the thickness of the rod.
Claim 25
Dependent Claim
79 words
An implantable bone plate comprising: (a) a solid, elongated rod, said rod including a bottom bearing surface; and (b) a plurality of integral tab members extending laterally from said solid rod and having a bottom surface extending in substantially the same plane as the bearing surface of the rod, said tab members having an aperture therein for receiving a bone screw or the like, and wherein said tab members have a thickness less than the thickness of the rod.
Claim 26
Dependent Claim
27 words
An implantable bone plate as described in claim 20 wherein said rod is at least one and a half times greater in thickness than the tab members.
Claim 27
Dependent Claim
24 words
An implantable bone plate as described in claim 20 wherein said rod is at least three times greater in thickness than the tab members.
Claim 28
Dependent Claim
32 words
An implantable bone plate as described in claim 20 wherein the surface of said tabs engagable with the bone surface are planar and extend tangentially from the outer surface of the rod.
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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) | 1989-03-03 | 1989-09-02 | 1990-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-03 | 1993-09-02 | 1994-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-03 | 1997-09-02 | 1998-03-04 | $7700.00 | Window Closed / Lapsed |