US5346492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perforated metallic panels and strips for internal fixation of bone fractures and for reconstructive surgery
Assignee: Medtronic Sofamor Danek Inc
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Filing: 1993-03-09
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Granted: 1994-09-13
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Expires: 2013-03-09
Abstract
Abstract A pliable metallic mesh implant plate structure for the internal fixation of bone fractures and for use in orthognathic and reconstructive surgery. The plate structure includes a multiplicity of substantially square perforations extending from the outer face side of the plate structure to the bone interface side thereof and arranged uniformly in parallel rows and parallel lines. Each perforation includes an arcuate chamfer of substantially uniform configuration extending inwardly from the outer face side of the plate structure to the bone interface side about the entire periphery thereof. Thus, when bone screws, having a screw head configuration including a hemispherical underside portion and a low profile upper head portion, are applied through the perforations of the mesh plate structure from the outer face side and screwed into bone proximate the bone interface side thereof, with the screw heads seated in congruent fitment in the perforation, there is presented a relatively non-obtrusive surface at the face side of the plate structure.
Inventors
- 👤 Frank H. Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:16
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/80; A61B17/8085; A61B17/84; A61B17/86; A61F; A61F2/00; A61F2/02; A61F2/28; A61F2/2846; A61F2/2875; A61F2002/285; A61F2/30; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30138; A61F2002/30153; A61F2002/30154; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30784; A61F2002/30785; A61F2002/3079; A61F2230/00; A61F2230/0002; A61F2230/0017; A61F2230/0019; A61F2230/0021; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00017; A61F2310/00023; A61F2310/00029; Y; Y10; Y10S; Y10S606/00; Y10S606/902; Y10S606/903; Y10S606/907
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
109 words
A pliable metallic perforated mesh plate structure for use with bone screws having a screw head including a hemispherical underside portion and a low profile upper portion for the internal fixation of fractures and for use in orthognathic and reconstructive surgery, said perforated mesh plate structure having a face side and a bone interface side and including a multiplicity of substantially square perforations arranged uniformly in rows and lines, and said substantially square perforations each including an arcuate chamfer extending inwardly from the face side of said mesh plate structure to the bone interface side of said mesh plate structure in substantially uniform configuration about the entire periphery thereof.
Claim 2
Dependent Claim
109 words
A pliable metallic perforated mesh plate structure for use with bone screws having a screw head including a hemispherical underside portion and a low profile upper portion for the internal fixation of fractures and for use in orthognathic and reconstructive surgery, said perforated mesh plate structure having a face side and a bone interface side and including a multiplicity of substantially square perforations arranged uniformly in rows and lines, and said substantially square perforations each including an arcuate chamfer extending inwardly from the face side of said mesh plate structure to the bone interface side of said mesh plate structure in substantially uniform configuration about the entire periphery thereof.
Claim 3
Dependent Claim
75 words
A pliable metallic perforated mesh plate structure for use with bone screws having a screw head including a hemispherical underside portion and a low profile upper portion for the internal fixation of fractures and for use in orthognathic and reconstructive surgery as claimed in claim 1 wherein said metallic perforated mesh plate structure is fabricated of biocompatible metals and metal alloys selected from the group consisting of titanium, titanium alloys, cobalt-chrome alloys and stainless steel.
Claim 4
Dependent Claim
126 words
A pliable metallic perforated implant plate structure having an outer face side and a bone interface side for use with bone screws having a screw head including a hemispherical underside portion and a low profile upper portion for the internal fixation of bone fractures and for use in orthognathic and reconstructive surgery, said perforated plate structure including a multiplicity of substantially square perforations extending from its outer face side to its bone interface side and arranged uniformly in parallel rows and parallel lines perpendicular to said rows, and said substantially square perforations each including an arcuate chamfer extending inwardly from the outer face side of said plate structure to the bone interface side of said plate structure in substantially uniform configuration about the entire periphery thereof.
Claim 5
Dependent Claim
126 words
A pliable metallic perforated implant plate structure having an outer face side and a bone interface side for use with bone screws having a screw head including a hemispherical underside portion and a low profile upper portion for the internal fixation of bone fractures and for use in orthognathic and reconstructive surgery, said perforated plate structure including a multiplicity of substantially square perforations extending from its outer face side to its bone interface side and arranged uniformly in parallel rows and parallel lines perpendicular to said rows, and said substantially square perforations each including an arcuate chamfer extending inwardly from the outer face side of said plate structure to the bone interface side of said plate structure in substantially uniform configuration about the entire periphery thereof.
Claim 6
Dependent Claim
85 words
A pliable metallic perforated implant plate structure having an outer face side and a bone interface side for use with bone screws having a screw head including a hemispherical underside portion and a low profile upper portion for the internal fixation of bone fractures and for use in orthognathic and reconstructive surgery as claimed in claim 3 wherein said metallic perforated plate structure is fabricated of biocompatible metal and metal alloys selected from the group consisting of titanium, titanium alloys, cobalt-chrome alloys and stainless steel.
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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) | 1997-09-12 | 1998-03-14 | 1998-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-12 | 2002-03-14 | 2002-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-12 | 2006-03-14 | 2006-09-13 | $7700.00 | Window Closed / Lapsed |