US5451225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fastener for external fixation device wires and pins
Assignee: Texas Scottish Rite Hospital for Children
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Filing: 1994-02-02
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Granted: 1995-09-19
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Expires: 2014-02-02
Abstract
Abstract A fastener for wires or pins used with an external fixation device to rigidly immobilize bone fragments during linear or angular distraction thereof includes a fixation bolt with either a transverse asymmetrical shank bore, or a transversely slotted bolthead for providing multiple contact surfaces to secure the wires or pins, regardless of their diameters. Alternatively, the fastener can include a washer or a threaded washer-like member having nonparallel opposing planar surfaces with a transverse slot in one. The transverse slots in the bolthead, washer and/or threaded washer-like member preferably include multiple cavities so as to increase the number of surfaces for contacting the wires or pins.
Inventors
- 👤 John D. Ross, Jr.
- 👤 Mikhail L. Samchukov
- 👤 John G. Birch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:07
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/60; A61B17/62; A61B17/66
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
126 words
A fastening device for fastening a fixation wire to an external fixation device frame member, comprising: an elongate first fastener member including first and second portions and a shaft therebetween disposed collinearly along a longitudinal shaft axis; a transverse member, attached to said first portion of said elongate first fastener member, including a surface facing generally toward said second portion of said elongate first fastener member and extending transversely beyond said shaft, wherein said surface of said transverse member is nonorthogonal to said longitudinal shaft axis; a slot in said nonorthogonal surface of said transverse member including a slot axis disposed nonparallelly to said longitudinal shaft axis; and engagement means on said second end of said elongate first fastener member for engaging a second fastener member.
Claim 2
Dependent Claim
126 words
A fastening device for fastening a fixation wire to an external fixation device frame member, comprising: an elongate first fastener member including first and second portions and a shaft therebetween disposed collinearly along a longitudinal shaft axis; a transverse member, attached to said first portion of said elongate first fastener member, including a surface facing generally toward said second portion of said elongate first fastener member and extending transversely beyond said shaft, wherein said surface of said transverse member is nonorthogonal to said longitudinal shaft axis; a slot in said nonorthogonal surface of said transverse member including a slot axis disposed nonparallelly to said longitudinal shaft axis; and engagement means on said second end of said elongate first fastener member for engaging a second fastener member.
Claim 3
Dependent Claim
17 words
A fastening device as recited in claim 1, wherein said elongate first fastener member comprises a bolt.
Claim 4
Dependent Claim
15 words
A fastening device as recited in claim 1, wherein said slot comprises a V-shaped notch.
Claim 5
Dependent Claim
16 words
A fastening device as recited in claim 1, wherein said slot includes a plurality of cavities.
Claim 6
Dependent Claim
26 words
A fastening device as recited in claim 1, wherein said engagement means comprises external threads for engaging an internally threaded member as said second fastener member.
Claim 7
Dependent Claim
75 words
A fastener device for fastening a fixation wire to an external fixation device frame member, comprising: a member including first and second substantially planar, nonparallel opposing surfaces; a bore including a bore axis in said substantially planar member through said first and second substantially planar, nonparallel opposing surfaces; a slot in said first surface of said member including a slot axis disposed nonparallelly to said bore axis; and a fastener member extending through the bore.
Claim 8
Dependent Claim
75 words
A fastener device for fastening a fixation wire to an external fixation device frame member, comprising: a member including first and second substantially planar, nonparallel opposing surfaces; a bore including a bore axis in said substantially planar member through said first and second substantially planar, nonparallel opposing surfaces; a slot in said first surface of said member including a slot axis disposed nonparallelly to said bore axis; and a fastener member extending through the bore.
Claim 9
Dependent Claim
14 words
A fastener member as recited in claim 1, wherein said member comprises a washer.
Claim 10
Dependent Claim
20 words
A fastener member as recited in claim 6, wherein said bore includes internal threads for engaging an externally threaded member.
Claim 11
Dependent Claim
15 words
A fastener member as recited in claim 6, wherein said slot comprises a V-shaped notch.
Claim 12
Dependent Claim
16 words
A fastening device as recited in claim 6, wherein said slot includes a plurality of cavities.
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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) | 1998-09-18 | 1999-03-20 | 1999-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-09-18 | 2003-03-20 | 2003-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-09-18 | 2007-03-20 | 2007-09-19 | $7700.00 | Window Closed / Lapsed |