Modular femoral trial system

• US 5,776,201 A
• Filed: 10/02/1995
• Issued: 07/07/1998
• Est. Priority Date: 10/02/1995
• Status: Expired due to Fees

• Current Assignee: DePuy Orthopaedics Incorporated (Johnson & Johnson)
• Original Assignee: Johnson and Johnson Professional Inc (Johnson & Johnson)
• Inventors: Sheehan, David G., Colleran, Dennis P., Brown, Robert S.
• Primary Examiner(s): Buiz, Michael
• Assistant Examiner(s): Woo, Julian W.
• Application Number:
  US08/537,023
• Time in Patent Office: 1,009 Days
• Field of Search: 606/87, 606/88, 606/102, 606/53, 606/60, 623/20
• US Class Current: 623/20.15
• CPC Class Codes: A61B 50/33 Trays
• CPC Class Codes: A61F 2/0095 Packages or dispensers for prostheses or other implants for intraocular lenses A61F2/1691; for dental surgery A61C19/02
• CPC Class Codes: A61F 2/3859 Femoral components
• CPC Class Codes: A61F 2/3886 for stabilising knees against anterior or lateral dislocations
• CPC Class Codes: A61F 2/4684 Trial or dummy prostheses
• CPC Class Codes: A61F 2002/30616 Sets comprising a plurality of prosthetic parts of different sizes or orientations
• CPC Class Codes: A61F 2002/30708 Means for distinguishing between left-sided and right-sided devices, Sets comprising both left-sided and right-sided prosthetic parts
• CPC Class Codes: A61F 2250/0084 Means for distinguishing between left-sided and right-sided devices; Sets comprising both left-sided and right-sided prosthetic parts
• CPC Class Codes: A61F 2310/00017 Iron- or Fe-based alloys, e.g. stainless steel
• CPC Class Codes: A61F 2310/00029 Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium

Abstract

A modular femoral trial system is provided having femoral trial bases of various sizes and adapters which may be used to convert the base from a cruciate retaining trial to a cruciate sacrificing trial or a trial for an implant with increased built in stability.

Claims

1. A modular femoral trial kit for use in surgical procedures for implanting a femoral prosthesis comprising:

a femoral base portion including medical and lateral condyle portions said condyle portions forming a groove therebetween;

a plurality of removable attachable knee joint stabilizing adapters, each of said plurality of adapters comprising a base having a pair of side walls extending from said base and a fixation device, each of said plurality of adapters arranged to be removably attached with said fixation device to said femoral base portion to provide a knee joint stabilizing trial device wherein said side walls are fixable in a position adjacent said groove, wherein each of said plurality of adapters has a different stabilizing capacity.

2. A modular femoral trial kit for use in surgical procedures for implanting femoral prosthesis comprising:

a plurality of femoral trial base portions each of said base portions comprising medial and lateral condyle portions, said condyle portions forming a groove therebetween; and

a plurality of removable attachable knee joint stabilizing adapters, each of said plurality adapters comprising a base having a pair of side walls extending from said base, a cam, and a fixation device, each of said plurality of adapters arranged to be removably attached with said fixation device to said femoral base portion to provide a knee joint stabilizing trial device wherein said side walls are fixable in a position adjacent said groove and said cam has a portion extending from each of said side walls.

3. The modular femoral trial kit of claim 2 wherein said plurality of femoral base portions comprises at least two femoral bases having different sizes.

4. The modular femoral trial kit of claim 2 wherein said plurality of femoral base portions comprises a right femoral base and a left femoral base.

5. The modular femoral trial kit of claim 2 wherein said plurality of adapters comprises at least two stabilizing adapters wherein each of said adapters has a different stabilizing capacity.