Patent US5897559A successfully refreshed from Google Patents.
US5897559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bone cutting guides for use in the implantation of prosthetic joint components
Assignee: MedIdea LLC
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Filing: 1997-09-18
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Granted: 1999-04-27
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Expires: 2017-09-18
Abstract
Abstract Improved bone-cutting guides enable a surgeon to better gauge required resection characteristics. A body having an outer surface and an inner surface configured to be positioned against a bone surface to be modified includes one or more openings enabling a bone-cutting tool to be used though the body so as to perform resections beneath the inner surface. To stabilize the bone-cutting tool during the execution of a particular resection, the invention preferably further includes one of more guides which may be temporarily positioned relative to the upper surface of the body. In one embodiment, the outer surface of the body may be shaped to co-act in a joint as part of a trial reduction. For example, the outer surface may be shaped according to a natural proximal tibia, enabling a knee joint reduction to be performed prior to resection. Rather than shaping the outer surface of the body to co-act in a joint as part of a trial reduction, the outer surface of the body may instead be configured to receive an insert featuring the joint-related surfaces.
Inventors
- 👤 Michael A. Masini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:16
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/14; A61B17/15; A61B17/154; A61B17/155; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/46; A61F2/4684; A61B17/157; A61B2017/00831; A61B2017/00902; A61F2/38; A61F2/3859; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/3009; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30777; A61F2250/00; A61F2250/0058; A61F2250/0091
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
135 words
A bone-cutting guide adapted for use with a bone-cutting tool, comprising: a body having an outer surface and an inner surface, the inner surface being configured for placement against a bone surface to be modified, the outer surface of the body being adapted to receive an insert having an outer surface, and wherein the outer surface of the insert is shaped so as to co-act in a joint as part of a trial reduction; at least one aperture extending through the body from the outer surface to the inner surface; and one or more separate and removable guide blocks, each block having a first surface adapted for positioning relative to the outer surface of the body, and a second surface for stabilizing the movement of the bone-cutting tool at a desired angle through the aperture.
Claim 2
Dependent Claim
135 words
A bone-cutting guide adapted for use with a bone-cutting tool, comprising: a body having an outer surface and an inner surface, the inner surface being configured for placement against a bone surface to be modified, the outer surface of the body being adapted to receive an insert having an outer surface, and wherein the outer surface of the insert is shaped so as to co-act in a joint as part of a trial reduction; at least one aperture extending through the body from the outer surface to the inner surface; and one or more separate and removable guide blocks, each block having a first surface adapted for positioning relative to the outer surface of the body, and a second surface for stabilizing the movement of the bone-cutting tool at a desired angle through the aperture.
Claim 3
Dependent Claim
29 words
The bone-cutting guide of claim 1, including a guide block which is wedge-shaped, such that the desired angle is non-perpendicular with respect to the bone surface to be modified.
Claim 4
Dependent Claim
34 words
The bone-cutting guide of claim 1, including a guide block having first and second surfaces configured such that the desired angle is a right angle with respect to the bone surface to be modified.
Claim 5
Dependent Claim
12 words
The bone-cutting guide of claim 1, wherein the inner surface is flat.
Claim 6
Dependent Claim
12 words
The bone-cutting guide of claim 1, wherein the outer surface is flat.
Claim 7
Dependent Claim
25 words
The bone-cutting guide of claim 1, wherein the outer surface is shaped so as to co-act in a joint as part of a trial reduction.
Claim 8
Dependent Claim
34 words
The bone-cutting guide of claim 6, wherein the outer surface is shaped according to a natural proximal tibia, enabling the cutting guide to co-act in a knee joint as part of a trial reduction.
Claim 9
Dependent Claim
34 words
The bone-cutting guide of claim 1, wherein the outer surface is shaped according to a natural proximal tibia, enabling the cutting guide to co-act in a knee joint as part of a trial reduction.
Claim 10
Dependent Claim
27 words
The bone-cutting guide of claim 1, wherein the insert includes one or more apertures aligned with those of the body, enabling a bone-cutting tool to extend therethrough.
Claim 11
Dependent Claim
125 words
A bone-cutting guide adapted for use with a bone-cutting tool, comprising: a body having an outer surface and an inner surface, the inner surface being configured for placement against a bone surface to be modified; an insert having an inner surface configured for placement relative to the outer surface of the body and an outer surface shaped so as to co-act in a joint as part of a trial reduction; at least one aperture extending through the insert and the body; and one or more cutting blocks, each block having a first surface adapted for positioning relative to the outer surface of the insert, and a second surface for stabilizing the movement of the bone-cutting tool at a desired angle through the insert and body.
Claim 12
Dependent Claim
125 words
A bone-cutting guide adapted for use with a bone-cutting tool, comprising: a body having an outer surface and an inner surface, the inner surface being configured for placement against a bone surface to be modified; an insert having an inner surface configured for placement relative to the outer surface of the body and an outer surface shaped so as to co-act in a joint as part of a trial reduction; at least one aperture extending through the insert and the body; and one or more cutting blocks, each block having a first surface adapted for positioning relative to the outer surface of the insert, and a second surface for stabilizing the movement of the bone-cutting tool at a desired angle through the insert and body.
Claim 13
Dependent Claim
29 words
The bone-cutting guide of claim 10, including a guide block which is wedge-shaped, such that the desired angle is non-perpendicular with respect to the bone surface to be modified.
Claim 14
Dependent Claim
34 words
The bone-cutting guide of claim 10, including a guide block having first and second surfaces configured such that the desired angle is a right angle with respect to the bone surface to be modified.
Claim 15
Dependent Claim
37 words
The bone-cutting guide of claim 10, wherein the outer surface of the insert is shaped according to a natural proximal tibia, enabling the cutting guide to co-act in a knee joint as part of a trial reduction.
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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) | 2002-04-26 | 2002-10-26 | 2003-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-04-26 | 2006-10-26 | 2007-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-04-26 | 2010-10-26 | 2011-04-27 | $7700.00 | Window Closed / Lapsed |