Patent US4617930A successfully refreshed from Google Patents.
US4617930A
Expired / Lapsed
US
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Blade stiffener
Assignee: Queen's University
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Filing: 1984-05-16
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Granted: 1986-10-21
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Expires: 2004-05-16
Abstract
Abstract A simple planar saw blade stiffening element for use with an orthopaedic saw is described, which enables a surgeon to make very accurate bone cuts without flexing of a standard saw blade.
Inventors
- 👤 Gerald A. B. Saunders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:39
CPC Classifications
B; B23; B23D; B23D61/00; B23D61/006; A; A61; A61B; A61B17/00; A61B17/14; A61B17/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A stiffener for use in overlying abutting relationship with an orthopaedic saw blade having a cutting edge at one longitudinal end thereof and hole means adjacent the other longitudinal end thereof adapted to releasably secure said blade to a saw power unit; said stiffener comprising a longitudinal planar element adapted to extend in overlying planar relationship with said saw blade from said other end thereof to a point intermediate said other end and said cutting edge, and including hole means at one end thereof adapted to releasably secure said stiffener to said saw power unit at one end thereof and clip means at the other end thereof to releasably engage said stiffener with said saw blade at said intermediate point.
Claim 2
Dependent Claim
120 words
A stiffener for use in overlying abutting relationship with an orthopaedic saw blade having a cutting edge at one longitudinal end thereof and hole means adjacent the other longitudinal end thereof adapted to releasably secure said blade to a saw power unit; said stiffener comprising a longitudinal planar element adapted to extend in overlying planar relationship with said saw blade from said other end thereof to a point intermediate said other end and said cutting edge, and including hole means at one end thereof adapted to releasably secure said stiffener to said saw power unit at one end thereof and clip means at the other end thereof to releasably engage said stiffener with said saw blade at said intermediate point.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-10-20 | 1990-04-21 | 1990-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-20 | 1994-04-21 | 1994-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-20 | 1998-04-21 | 1998-10-21 | $7700.00 | Window Closed / Lapsed |