Acetabular total hip component alignment system for accurate intraoperative positioning in inclination

• US 6,214,014 B1
• Filed: 05/19/1999
• Issued: 04/10/2001
• Est. Priority Date: 05/19/1998
• Status: Expired due to Term

• Current Assignee: William A. Mcgann
• Original Assignee: William A. Mcgann
• Inventors: McGann, William A.
• Primary Examiner(s): REIP, DAVID OWEN
• Application Number:
  US09/314,699
• Time in Patent Office: 692 Days
• Field of Search: 606/87, 606/88, 606/89, 606/90, 606/91, 606/102, 623/19-23, 128/777, 332/28, 335/11, 356/253, 364/561
• US Class Current: 606/102
• CPC Class Codes: A61F 2/34 Acetabular cups
• CPC Class Codes: A61F 2/4603 for insertion or extraction of endoprosthetic joints or of accessories thereof
• CPC Class Codes: A61F 2/4609 of acetabular cups
• CPC Class Codes: A61F 2/4657 Measuring instruments used for implanting artificial joints for surgical instruments A61B90/06
• CPC Class Codes: A61F 2002/4668 for measuring angles
• CPC Class Codes: A61F 2002/4687 Mechanical guides for implantation instruments

Abstract

An alignment system 20 is used for alignment structure for surgical procedures. The alignment system and method can be used in a preferred embodiment to align an acetabular cup implant for purposes of a hip replacement procedure. The alignment system and method can be used for other alignment procedures whether or not an implant is utilized.

Claims

1. A surgical alignment system for hip replacement surgery comprising:

a reference adapted for positioning adjacent to an anatomical tissue, which said reference has a first and second reference surface which are adapted for positioning adjacent to first and second bone landmarks respectively, which said first reference surface is shaped and adapted to mate with a teardrop anatomical structure of an acetabular socket;

a device that can establish an angle relative to said reference, wherein said device includes a first body with a scale; and

a second body which is pivotable relative to said reference in order to establish an angle relative to said scale.

2. The alignment system of claim 1 further including:

a light source which is associated with one of the first body and the second body in order project a reference point in order to locate the position of the first body relative to the second body.

3. The alignment system of claim 1 wherein:

said reference and said device comprise a goniometer and the system further including;

a implant insertion handle which is adapted to hold an anatomical implant and can be aligned relative to anatomical tissue using the goniometer.

4. The alignment system of claim 3 including:

a light source which is associated with said implant insertion handle in order to align said implant insertion handle with said goniometer.

5. The alignment system of claim 1 wherein:

said reference is also positioned adjacent to the lateral sourcil structure of an acetabular socket.

6. A surgical alignment system for hip replacement surgery comprising:

a means for defining a reference which is adapted for positioning adjacent to an anatomical structure, and said reference defining means has first and second reference surfaces which are adapted for positioning adjacent to first and second bone landmarks respectively, and which said first reference surface is shaped and is adapted to mate with a teardrop anatomical structure of an acetabular socket; and

a means for establishing an angle relative to said means for defining a reference;

wherein said means for establishing an angle relative to the reference defining means includes;

a first body with a scale; and

a second body which is pivotable relative to said reference defining means in order to establish an angle relative to said first body.