US5228459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of resecting bone
Assignee: Zimmer Technology Inc
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Filing: 1991-10-09
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Granted: 1993-07-20
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Expires: 2011-10-09
Abstract
Abstract Methods and apparatus for prosthetic knee replacement permit preparation of tibial plateau and femoral condyle surfaces and implant of tibial and femoral protheses components with the use of arthroscopic surgical techniques. The bone surfaces are resected by moving a rotating milling cutter longitudinally across the bone surface and moving the rotating milling cutter substantially laterally across the bone. Cement is supplied between the prostheses and the bone surfaces after positioning of the prostheses on the bone, and cement bonding is enhanced by applying suction to the bone to draw the cement into the bone.
Inventors
- 👤 Richard B. Caspari
- 👤 Jeffrey G. Roberts
- 👤 James T. Treace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:25
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/16; A61B17/1662; A61B17/1675; A61B17/1613; A61B17/1622; A61B17/1624; A61B17/17; A61B17/1739; A61B17/1764; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/38; A61B17/14; A61B17/15; A61B17/1615; A61B17/32; A61B17/320016; A61B17/56; A61B17/58; A61B17/68; A61B17/70; A61B17/7097; A61B17/7098; A61B17/88; A61B17/8802; A61B17/8805; A61B17/8822; A61B2017/00535; A61B2017/00544; A61B2017/1602; A61M; A61M1/00; A61M1/84; A61M2205/00; A61M2205/10; A61M2205/103; Y; Y10; Y10S; Y10S623/00; Y10S623/915; Y10S623/919; Y10T; Y10T407/00; Y10T407/19; Y10T407/1946; Y10T407/1948
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
81 words
A method of resecting a bone surface in the body comprising the steps of: moving a rotating milling cutter longitudinally across the bone surface, said longitudinally moving rotating milling cutter cutting said bone surface along the length of the longitudinally moving milling cutter; and moving a rotating milling cutter substantially laterally across said bone surface, said laterally moving rotating milling cutter cutting said bone surface along the length of the laterally moving milling cutter; whereby said bone surface is made planar.
Claim 2
Independent Claim
81 words
A method of resecting a bone surface in the body comprising the steps of: moving a rotating milling cutter longitudinally across the bone surface, said longitudinally moving rotating milling cutter cutting said bone surface along the length of the longitudinally moving milling cutter; and moving a rotating milling cutter substantially laterally across said bone surface, said laterally moving rotating milling cutter cutting said bone surface along the length of the laterally moving milling cutter; whereby said bone surface is made planar.
Claim 3
Dependent Claim
26 words
A method of resecting a bone surface as recited in claim 1 wherein said step of laterally moving a milling cutter includes pivoting the milling cutter.
Claim 4
Dependent Claim
42 words
A method of resecting a bone surface as recited in claim 1 wherein said step of longitudinally moving a milling cutter includes longitudinally moving the milling cutter across the bone surface a plurality of times to form a plurality of spaced troughs.
Claim 5
Independent Claim
37 words
A method of resecting a bone surface in the body comprising the steps of forming a plurality of elongate troughs in the bone surface with ridges therebetween; and removing the ridges to produce a planar bone surface.
Claim 6
Independent Claim
37 words
A method of resecting a bone surface in the body comprising the steps of forming a plurality of elongate troughs in the bone surface with ridges therebetween; and removing the ridges to produce a planar bone surface.
Claim 7
Dependent Claim
37 words
A method of resecting bone as recited in claim 4 wherein the troughs have lengths and said step of removing the ridges includes moving a milling cutter substantially laterally with respect to the lengths of the troughs.
Claim 8
Dependent Claim
36 words
A method of resecting a bone surface in the body as recited in claim 4 wherein said step of removing the ridges includes pivotally moving a milling cutter to sweep the milling cutter across the ridges.
Claim 9
Dependent Claim
30 words
A method of resecting a bone surface in the body as recited in claim 6 wherein said trough forming step includes moving a milling cutter longitudinally across the bone surface.
Claim 10
Dependent Claim
30 words
A method of resecting a bone surface in the body as recited in claim 4 wherein said trough forming step includes moving a milling cutter longitudinally across the bone surface.
Claim 11
Independent Claim
86 words
A method of resecting a bone surface in the body comprising the steps of moving a rotating milling cutter longitudinally across the bone surface a plurality of times to form a plurality of spaced troughs, said step of longitudinally moving the milling cutter including pivoting the milling cutter to cause the spaced troughs to be angularly oriented relative to each other; and moving a rotating milling cutter substantially laterally across said bone surface, said step of laterally moving the milling cutter including pivoting the milling cutter.
Claim 12
Independent Claim
86 words
A method of resecting a bone surface in the body comprising the steps of moving a rotating milling cutter longitudinally across the bone surface a plurality of times to form a plurality of spaced troughs, said step of longitudinally moving the milling cutter including pivoting the milling cutter to cause the spaced troughs to be angularly oriented relative to each other; and moving a rotating milling cutter substantially laterally across said bone surface, said step of laterally moving the milling cutter including pivoting the milling cutter.
Claim 13
Dependent Claim
40 words
A method of resecting a bone surface as recited in claim 9 wherein said step of laterally moving a milling cutter includes pivoting the milling cutter to sweep the milling cutter across the spaced troughs to level said bone surface.
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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) | 1996-07-19 | 1997-01-18 | 1997-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-19 | 2001-01-18 | 2001-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-19 | 2005-01-18 | 2005-07-20 | $7700.00 | Window Closed / Lapsed |