Patent US6056754A successfully refreshed from Google Patents.
US6056754A
Expired / Lapsed
US
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Method and apparatus for patella resection and guide handle
Assignee: Biomet Manufacturing LLC
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Filing: 1998-09-17
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Granted: 2000-05-02
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Expires: 2018-09-17
Abstract
Abstract A method and apparatus is provided for cutting bone. In one embodiment, a femur is resected by means of pattern plates having a cutting path with at least two continuous, non-coplanar guide surfaces. The cutting path has a similar profile to the interior profile of a femoral prosthesis. The cutting path guides a reciprocating, oscillating, or rotating cutting tool along a path for removing material from some or all of the distal femur to accept a distal femoral prosthesis. The cutting tool can be a cylindrical milling bit, and can even have a curvilinear profile to cut bone such that it has a three dimensional profile in cross section. Pattern plates can also be used to cut or remove material from other bones.
Inventors
- 👤 Timothy G. Haines
- 👤 David B. Goldstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:41
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/14; A61B17/15; A61B17/154; A61B17/155; A61B17/16; A61B17/1662; A61B17/1675; A61B17/17; A61B17/1739; A61B17/1764; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/38; A61F2/3859; A61B17/157; A61B17/1767; A61B2017/1602
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
83 words
A method for resecting a patella comprising the steps of: positioning pattern means along at least one side of a patella, the pattern means including a cutting path having a guide surface; affixing the pattern means to a patella; interconnecting a cutting means with the pattern means, the cutting means comprising a cylindrical milling bit; and traversing the cutting means along the cutting path of the pattern means by manipulating the cutting means to continuously traverse the cutting path to resect a patella.
Claim 2
Independent Claim
83 words
A method for resecting a patella comprising the steps of: positioning pattern means along at least one side of a patella, the pattern means including a cutting path having a guide surface; affixing the pattern means to a patella; interconnecting a cutting means with the pattern means, the cutting means comprising a cylindrical milling bit; and traversing the cutting means along the cutting path of the pattern means by manipulating the cutting means to continuously traverse the cutting path to resect a patella.
Claim 3
Dependent Claim
42 words
The method of claim 1 wherein the step of traversing the cutting means along the cutting path comprises the steps of grasping a handle interconnected with the cutting means and guiding the cutting means along the cutting path by manipulating the handle.
Claim 4
Dependent Claim
16 words
The method of claim 1 further comprising positioning pattern means along opposite sides of a patella.
Claim 5
Dependent Claim
36 words
The method of claim 3 wherein the pattern means are formed on gripping surfaces of plier means and the step of affixing the pattern means to a patella comprises squeezing grip portions of the plier means.
Claim 6
Dependent Claim
25 words
The method of claim 3 wherein the step of positioning the pattern means along a patella further comprises contacting a depth indicator against a patella.
Claim 7
Dependent Claim
53 words
A guide handle for guiding a milling bit to cut a bone, the guide handle comprising: grip means for grasping the handle; crossbar means interconnected with the handle; sidebar means extending in facing relation from the crossbar means; and retention means positioned on the sidebar means for receiving and retaining a milling bit.
Claim 8
Dependent Claim
53 words
A guide handle for guiding a milling bit to cut a bone, the guide handle comprising: grip means for grasping the handle; crossbar means interconnected with the handle; sidebar means extending in facing relation from the crossbar means; and retention means positioned on the sidebar means for receiving and retaining a milling bit.
Claim 9
Dependent Claim
22 words
The guide handle of claim 6 wherein the retention means further includes bushing means for positioning about spindles of a milling bit.
Claim 10
Dependent Claim
24 words
The guide handle of claim 7 wherein the bushing means are sized to be received in within a cutting path of a pattern plate.
Claim 11
Dependent Claim
13 words
The guide handle of claim 6 wherein the crossbar is adjustable in size.
Claim 12
Dependent Claim
17 words
The guide handle of claim 9 further including lock means for locking the size of the crossbar.
Claim 13
Independent Claim
122 words
A method of using a guide handle to guide a milling bit to cut bone comprising the steps of: attaching one or more pattern plates having a cutting path to a bone to be cut; inserting a milling bit into the cutting path; positioning a guide handle into alignment with the milling bit; retracting a crossbar of the guide handle to move sidebars of the guide handle against the ends of the milling bit to position the ends of the milling bit within bushings on the sidebars; positioning the bushings within the cutting path; locking the crossbar; actuating the milling bit; and using a handle on the guide handle to manipulate the milling bit along the cutting path to cut a bone.
Claim 14
Independent Claim
122 words
A method of using a guide handle to guide a milling bit to cut bone comprising the steps of: attaching one or more pattern plates having a cutting path to a bone to be cut; inserting a milling bit into the cutting path; positioning a guide handle into alignment with the milling bit; retracting a crossbar of the guide handle to move sidebars of the guide handle against the ends of the milling bit to position the ends of the milling bit within bushings on the sidebars; positioning the bushings within the cutting path; locking the crossbar; actuating the milling bit; and using a handle on the guide handle to manipulate the milling bit along the cutting path to cut a bone.
Claim 15
Independent Claim
66 words
An apparatus for resecting a patella comprising: grip handles for manipulating the apparatus; cross-over members pivotally interconnected; patella clamp members extending from the cross-over members in facing relation; guide means associated with the clamp members for guiding a cutting means along a cutting path; and bushings captured within the guide means for receiving the cutting the means and guiding the cutting means along the cutting path.
Claim 16
Independent Claim
66 words
An apparatus for resecting a patella comprising: grip handles for manipulating the apparatus; cross-over members pivotally interconnected; patella clamp members extending from the cross-over members in facing relation; guide means associated with the clamp members for guiding a cutting means along a cutting path; and bushings captured within the guide means for receiving the cutting the means and guiding the cutting means along the cutting path.
Claim 17
Dependent Claim
20 words
The apparatus of claim 12 further including beveled edge members on the clamp members for contacting and supporting a patella.
Claim 18
Dependent Claim
19 words
The apparatus of claim 13 further comprising a depth indicator for positioning the device with respect to a patella.
Claim 19
Dependent Claim
14 words
The apparatus of claim 13 further comprising pin means for interconnecting the cross-over members.
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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) | 2003-05-02 | 2003-11-01 | 2004-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-05-02 | 2007-11-01 | 2008-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-05-02 | 2011-11-01 | 2012-05-02 | $7700.00 | Window Closed / Lapsed |