Patent US5397330A successfully refreshed from Google Patents.
US5397330A
Expired / Lapsed
US
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Posterior cruciate ligament retractor for use in performing knee surgery
Assignee: Individual
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Filing: 1994-02-08
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Granted: 1995-03-14
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Expires: 2014-02-08
Abstract
Abstract A method of performing knee surgery and retractors and a femoral distractor for use in performing such method are provided, said retractors including a PCL tibial retractor, lateral patellar retractor, collateral ligament retractor, posterior cruciate ligament retractor and unicompartmental retractor designed to cooperate with one another in performing such method.
Inventors
- 👤 E. Michael Mikhail
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:01
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/02; A61B17/025; A61B2017/0268
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
157 words
A posterior cruciate ligament retractor for use in performing knee surgery comprising: (a) a handle extending along a longitudinal axis; (b) an integral support extending downwardly from said handle when the portion of said handle adjacent thereto is in a horizontal position and following initially a curved path and then a straight line path, said integral support having spaced apart edges, said spaced apart integral support edges being parallel and each lying in a plane substantially parallel to said longitudinal axis; and (c) an integral tip extending from said integral support and following a curved path which is reverse in direction to the curved path of said integral support, said integral tip having a pair of edges, each converging inwardly toward one another directly from one of said integral support edges, said pair of edges tapering in a straight line path toward a vertical plane lying on said longitudinal axis and terminating in a point free end.
Claim 2
Dependent Claim
157 words
A posterior cruciate ligament retractor for use in performing knee surgery comprising: (a) a handle extending along a longitudinal axis; (b) an integral support extending downwardly from said handle when the portion of said handle adjacent thereto is in a horizontal position and following initially a curved path and then a straight line path, said integral support having spaced apart edges, said spaced apart integral support edges being parallel and each lying in a plane substantially parallel to said longitudinal axis; and (c) an integral tip extending from said integral support and following a curved path which is reverse in direction to the curved path of said integral support, said integral tip having a pair of edges, each converging inwardly toward one another directly from one of said integral support edges, said pair of edges tapering in a straight line path toward a vertical plane lying on said longitudinal axis and terminating in a point free end.
Claim 3
Dependent Claim
150 words
A posterior cruciate ligament retractor comprising: (a) a handle extending along a longitudinal axis; (b) an integral support extending downwardly from said handle when the portion of said handle adjacent thereto is in a horizontal position and following initially a curved Oath and then a straight line path, the breadth of said support being 0.43 inch +/-0.02 inch, and; (c) an integral tip extending from said integral support and following a curved path which is reverse in direction to the curved path of said integral support, said integral tip having edges tapering toward a vertical plane lying on said longitudinal axis and terminating in a pointed free end, said tip having a length of 1.10 inch +/-0.02 inch and two edges, each disposed at an angle of 4° +/-1° to vertical plane lying on said longitudinal axis, the end of said tip having a thickness of 0.045 inch +/-0.01 inch.
Claim 4
Dependent Claim
150 words
A posterior cruciate ligament retractor comprising: (a) a handle extending along a longitudinal axis; (b) an integral support extending downwardly from said handle when the portion of said handle adjacent thereto is in a horizontal position and following initially a curved Oath and then a straight line path, the breadth of said support being 0.43 inch +/-0.02 inch, and; (c) an integral tip extending from said integral support and following a curved path which is reverse in direction to the curved path of said integral support, said integral tip having edges tapering toward a vertical plane lying on said longitudinal axis and terminating in a pointed free end, said tip having a length of 1.10 inch +/-0.02 inch and two edges, each disposed at an angle of 4° +/-1° to vertical plane lying on said longitudinal axis, the end of said tip having a thickness of 0.045 inch +/-0.01 inch.
Claim 5
Dependent Claim
165 words
A posterior cruciate ligament retractor comprising: (a) a handle extending along a longitudinal axis; (b) an integral support extending downwardly from said handle when the portion of said handle adjacent thereto is in a horizontal position and following initially a curved path and then a straight line path; said integral support is disposed at an angle of 22° +/-1.5° from the adjacent handle portion and having a breadth of 0.43 inch +/-0.02 inch, and; (c) an integral tip extending from said integral support and following a curved path which is reverse in direction to the curved path of said integral support, said integral tip having edges tapering toward a vertical plane lying on said longitudinal axis and terminating in a pointed free end, said tip having a length of 1.10 inch +/-0.02 inch and two edges, each disposed at an angle of 4° +/-1° to vertical plane lying on said longitudinal axis, the end of said tip having a thickness of 0.045 inch +/-0.01 inch.
Claim 6
Dependent Claim
165 words
A posterior cruciate ligament retractor comprising: (a) a handle extending along a longitudinal axis; (b) an integral support extending downwardly from said handle when the portion of said handle adjacent thereto is in a horizontal position and following initially a curved path and then a straight line path; said integral support is disposed at an angle of 22° +/-1.5° from the adjacent handle portion and having a breadth of 0.43 inch +/-0.02 inch, and; (c) an integral tip extending from said integral support and following a curved path which is reverse in direction to the curved path of said integral support, said integral tip having edges tapering toward a vertical plane lying on said longitudinal axis and terminating in a pointed free end, said tip having a length of 1.10 inch +/-0.02 inch and two edges, each disposed at an angle of 4° +/-1° to vertical plane lying on said longitudinal axis, the end of said tip having a thickness of 0.045 inch +/-0.01 inch.
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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) | 1998-03-13 | 1998-09-12 | 1999-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-13 | 2002-09-12 | 2003-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-13 | 2006-09-12 | 2007-03-14 | $7700.00 | Window Closed / Lapsed |