← Back to Patent Explorer
US5334194A Expired / Lapsed US ⏱️ 0.0 years remaining

Collateral ligament retractor for use in performing knee surgery

Assignee: Individual
•
Filing: 1992-12-09
•
Granted: 1994-08-02
•
Expires: 2012-12-09
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

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

  • 👤 W. F. Michael Mikhail

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 03:24
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/02; A61B17/025; A61B2017/0268

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 146 words
A collateral ligament retractor for use in performing knee surgery comprising: (a) a handle extending along a longitudinal axis, said handle including a flat portion defining a plane; (b) an integral support section extending from said handle flat portion and following a curved path downwardly from said plane when said flat portion is in a horizontal position; and, (c) a tip extending from said integral support section and following a curved path in a reverse direction from that of said integral support section, said tip terminating in an end angled upwardly toward and below said plane defined by said horizontally positioned flat portion, said end having a thickness not to exceed 0.110 inch and following an outwardly curved blunt path across its breadth, said tip having edges tapering toward each other as they approach said end, said tapering occurring throughout a major portion of said tip.
Claim 2
Dependent Claim 146 words
A collateral ligament retractor for use in performing knee surgery comprising: (a) a handle extending along a longitudinal axis, said handle including a flat portion defining a plane; (b) an integral support section extending from said handle flat portion and following a curved path downwardly from said plane when said flat portion is in a horizontal position; and, (c) a tip extending from said integral support section and following a curved path in a reverse direction from that of said integral support section, said tip terminating in an end angled upwardly toward and below said plane defined by said horizontally positioned flat portion, said end having a thickness not to exceed 0.110 inch and following an outwardly curved blunt path across its breadth, said tip having edges tapering toward each other as they approach said end, said tapering occurring throughout a major portion of said tip.
Claim 3
Dependent Claim 158 words
A collateral ligament retractor for use in performing knee surgery comprising: (a) a handle extending along a longitudinal axis, said handle including a flat portion defining a plane; (b) an integral support section extending from said handle flat portion and following a curved path downwardly from said plane when said flat portion is in a horizontal position; and, (c) a tip extending from said integral support section and following a curved path in a reverse direction from that of said integral support section, said tip terminating in an end angled upwardly toward and below the horizontal plane defined by said horizontally positioned flat portion, said end having a thickness not to exceed 0.110 inch and following an outwardly curved blunt path across its breadth, said tip having edges disposed toward each other at an angle of 8°+/-2° and having a maximum breadth of 0.41 inch +/-0.02 inch and a breadth adjacent said end of 0.25 inch +/-0.02 inch.
Claim 4
Dependent Claim 158 words
A collateral ligament retractor for use in performing knee surgery comprising: (a) a handle extending along a longitudinal axis, said handle including a flat portion defining a plane; (b) an integral support section extending from said handle flat portion and following a curved path downwardly from said plane when said flat portion is in a horizontal position; and, (c) a tip extending from said integral support section and following a curved path in a reverse direction from that of said integral support section, said tip terminating in an end angled upwardly toward and below the horizontal plane defined by said horizontally positioned flat portion, said end having a thickness not to exceed 0.110 inch and following an outwardly curved blunt path across its breadth, said tip having edges disposed toward each other at an angle of 8°+/-2° and having a maximum breadth of 0.41 inch +/-0.02 inch and a breadth adjacent said end of 0.25 inch +/-0.02 inch.
Claim 5
Dependent Claim 61 words
A collateral ligament retractor according to claim 2, wherein the curved path of said tip is on a radius of 3.0 inches +/-0.5 inch having a center located 2.50 inch +/-0.4 inch above said horizontal plane and located on a line passing through said horizontal plane at right angles and passing through said tip 0.88 inch +/-0.3 inch from said end.
Claim 6
Dependent Claim 198 words
A collateral ligament retractor for use in performing knee surgery comprising: (a) a handle extending along a longitudinal axis, said handle including a flat portion defining a plane; (b) an integral support section extending from said handle flat portion and following a curved path downwardly from said plane when said flat portion is in a horizontal position; and, (c) a tip extending from said integral support section and following a curved path in a reverse direction from that of said integral support section, said tip terminating in an end angled upwardly toward and below said plane defined by said horizontally positioned flat portion, said end having a thickness not to exceed 0.110 inch and following an outwardly curved blunt path across its breadth, said tip having edges tapering toward each other as they approach said end, said tapering occurring throughout a major portion of said tip, the curved path of said tip being on a radius of 3.0 inches +/-0.5 inch having a center located 2.50 inch +/-0.4 inch above said horizontal plane and located on a line passing through said horizontal plane at right angles and passing through said tip, 0.88 inch +/-0.3 inch from said end.
Claim 7
Dependent Claim 198 words
A collateral ligament retractor for use in performing knee surgery comprising: (a) a handle extending along a longitudinal axis, said handle including a flat portion defining a plane; (b) an integral support section extending from said handle flat portion and following a curved path downwardly from said plane when said flat portion is in a horizontal position; and, (c) a tip extending from said integral support section and following a curved path in a reverse direction from that of said integral support section, said tip terminating in an end angled upwardly toward and below said plane defined by said horizontally positioned flat portion, said end having a thickness not to exceed 0.110 inch and following an outwardly curved blunt path across its breadth, said tip having edges tapering toward each other as they approach said end, said tapering occurring throughout a major portion of said tip, the curved path of said tip being on a radius of 3.0 inches +/-0.5 inch having a center located 2.50 inch +/-0.4 inch above said horizontal plane and located on a line passing through said horizontal plane at right angles and passing through said tip, 0.88 inch +/-0.3 inch from said end.
Claim 8
Dependent Claim 43 words
A collateral ligament retractor according to claim 4, wherein said tip has edges disposed toward each other at an angle of 8°+/-2° and has a maximum breadth of 0.41 inch +/-0.02 inch and a breadth adjacent said end of 0.25 inch +/-0.02 inch.

References Cited (Backward Citations)

FR462077A Cited
US3776240A Cited
DE2808970A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1997-08-01 1998-01-31 1998-08-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2001-08-01 2002-01-31 2002-08-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2005-08-01 2006-01-31 2006-08-02 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag