US5674222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Forked plate
Assignee: Synthes USA LLC
•
Filing: 1994-06-01
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Granted: 1997-10-07
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Expires: 2014-06-01
Abstract
Abstract A bone plate is disclosed having a longitudinal shaft section with boreholes to admit attachment screws. Two forklike prongs are attached to the shaft section. The prongs are bent relative to the longitudinal axis of the shaft section at an angle from 60 degrees to 150 degrees. The prongs can be lengthened individually so that the bone plate can be adjusted to different applications, even interoperatively, and without great expense.
Inventors
- 👤 Roger Berger
- 👤 Peter E. Ochsner
- 👤 Thomas Welte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:15
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/74; A61B17/742; A61B17/746; A61B17/80; A61B17/809; A61B17/8095; Y; Y10; Y10S; Y10S606/00; Y10S606/902
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
57 words
Bone plate having a longitudinal shaft section with a longitudinal axis and at least two prongs shaped in forked fashion unitary with one end of said shaft section, said prongs having a free space therebetween and being bent at an angle of 60° to 150° relative to said longitudinal axis, and means for lengthening said prongs individually.
Claim 2
Dependent Claim
57 words
Bone plate having a longitudinal shaft section with a longitudinal axis and at least two prongs shaped in forked fashion unitary with one end of said shaft section, said prongs having a free space therebetween and being bent at an angle of 60° to 150° relative to said longitudinal axis, and means for lengthening said prongs individually.
Claim 3
Dependent Claim
20 words
Bone plate according to claim 1, wherein the prongs have distal ends, said distal ends comprising said means for lengthening.
Claim 4
Dependent Claim
25 words
Bone plate according to claim 1, wherein the prongs are hollow for receiving bone screws which when extended through the hollow prongs, lengthen the prongs.
Claim 5
Dependent Claim
19 words
Bone plate according to claim 1, wherein the prongs begin before the point at which the plate is bent.
Claim 6
Dependent Claim
23 words
Bone plate according to claim 4, wherein the prongs begin at least 1 mm before the point at which the plate is bent.
Claim 7
Dependent Claim
34 words
Bone plate according to claim 4, wherein the prongs begin at a point which is at least 0.1 times the thickness of the shaft section from the point at which the plate is bent.
Claim 8
Dependent Claim
34 words
Bone plate according to claim 6, wherein the prongs begin at a point which is at least 0.3 times the thickness of the shaft section before the point at which the plate is bent.
Claim 9
Dependent Claim
15 words
Bone plate according to claim 1, wherein the free space is at least 3 mm.
Claim 10
Dependent Claim
15 words
Bone plate according to claim 8 wherein the free space is at least 5 mm.
Claim 11
Dependent Claim
15 words
Bone plate according to claim 8, wherein the free space is at least 12 mm.
Claim 12
Dependent Claim
15 words
Bone plate according to claim 8 wherein the free space is at least 14 mm.
Claim 13
Dependent Claim
20 words
Bone plate according to claim 8, wherein the free space is at least half the smallest diameter of the prongs.
Claim 14
Dependent Claim
16 words
Bone plate according to claim 1, wherein the shaft section has boreholes for receiving attachment screws.
Claim 15
Dependent Claim
42 words
Bone plate according to claim 13, wherein at least one borehole adjacent to the prongs has a central axis and is shaped to permit insertion of an attachment screw at an angle of from 10° to 50° relative to said central axis.
Claim 16
Dependent Claim
15 words
Bone plate according to claim 13, wherein at least one borehole is a compression hole.
Claim 17
Dependent Claim
19 words
Bone plate according to claim 13, wherein at least one borehole has a conical shape tapering toward the prongs.
Claim 18
Dependent Claim
33 words
Bone plate according to claim 1, wherein the cross-section of the shaft section, orthogonal to the longitudinal axis of the shaft section, has a trapezoidal shape, with the shorter baseline facing the prongs.
Claim 19
Dependent Claim
20 words
Bone plate according to claim 1, wherein the cross-section of the shaft section, orthogonal to its longitudinal axis, is rectangular.
Claim 20
Dependent Claim
13 words
Bone plate according to claim 1, wherein the plate has exactly two prongs.
Claim 21
Dependent Claim
14 words
Bone plate according to claim 1, wherein the prongs have a polygonal cross section.
Claim 22
Dependent Claim
14 words
Bone plate according to claim 1, wherein the prongs have a round cross section.
Claim 23
Dependent Claim
13 words
Bone plate according to claim 1, wherein the prongs have a blunt end.
Claim 24
Dependent Claim
35 words
Bone plate according to claim 1 wherein the prongs define a plane and a line orthogonal to said plane forms an angle with the longitudinal axis of the shaft section which is other than 0°.
Claim 25
Dependent Claim
42 words
Bone plate according to claim 23 wherein the shaft section has a pivot point with an axis perpendicular to the shaft section and around which the end of the shaft section having the prongs can be bent relative to the longitudinal axis.
Claim 26
Dependent Claim
41 words
Bone plate according to claim 1 wherein the prong side part of the shaft section is bent back at an angle of from 5° to 15° in the direction of the surface of the shaft section facing away from the bone.
Claim 27
Dependent Claim
17 words
Bone plate according to claim 1 wherein the prong side part of the shaft section is arcuate.
Claim 28
Dependent Claim
11 words
Bone plate according to claim 1 comprising a plurality of pieces.
Claim 29
Dependent Claim
105 words
Bone plate having a longitudinal shaft section with a longitudinal axis and at least two prongs shaped in forked fashion unitary with one end of said shaft section, said prongs being bent at an angle of 60° to 150° relative to said longitudinal axis, said prongs having distal ends comprising means for lengthening said prongs individually, wherein the means for lengthening comprises a threaded socket, said plate further comprising a longitudinal lengthening element equipped at one end with a thread matching the thread of said socket and at its other end with a tool recess to be used to screw the element in the socket.
Claim 30
Dependent Claim
105 words
Bone plate having a longitudinal shaft section with a longitudinal axis and at least two prongs shaped in forked fashion unitary with one end of said shaft section, said prongs being bent at an angle of 60° to 150° relative to said longitudinal axis, said prongs having distal ends comprising means for lengthening said prongs individually, wherein the means for lengthening comprises a threaded socket, said plate further comprising a longitudinal lengthening element equipped at one end with a thread matching the thread of said socket and at its other end with a tool recess to be used to screw the element in the socket.
References Cited (Backward Citations)
US3256877A
Cited
FR1487486A
Cited
DE1813807A1
Cited
DE2602900A1
Cited
EP0009327A1
Cited
US4838252A
Cited
US4905680A
Cited
FR2606268A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-10-06 | 2001-04-07 | 2001-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-10-06 | 2005-04-07 | 2005-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-10-06 | 2009-04-07 | 2009-10-07 | $7700.00 | Window Closed / Lapsed |