Enhanced graphics features for computer assisted surgery system
a computer assisted surgery and enhanced graphics technology, applied in the field of enhanced graphics capabilities of computer assisted surgery systems, can solve the problems of difficult to accurately predict the placement of the final guide pin, difficult to achieve the desired triangular spacing and optimal placement of the guide pin in the femoral neck, and t permit the surgeon much flexibility to modify the preset pattern, etc., to achieve the effect of improving the function of the instrument, promoting simple instruments, and sufficiently simulating
a computer assisted surgery and enhanced graphics technology, applied in the field of enhanced graphics capabilities of computer assisted surgery systems, can solve the problems of difficult to accurately predict the placement of the final guide pin, difficult to achieve the desired triangular spacing and optimal placement of the guide pin in the femoral neck, and t permit the surgeon much flexibility to modify the preset pattern, etc., to achieve the effect of improving the function of the instrument, promoting simple instruments, and sufficiently simulating
US20050119561A1Inactive Publication Date: 2005-06-02GE MEDICAL SYST GLOBAL TECH CO LLC
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[0030] Current surgical practice for the treatment of a femoral neck fracture is the insertion of three cannulated screws through a small incision on the lateral (side) aspect of the hip. As shown in FIG. 1A, the screws (102) are inserted from the lateral aspect of the trochanteric area of the femur (101) through the femoral neck (103) and into the femoral head (104) in a roughly parallel manner. When observed from a lateral view, FIG. 1B, the screws describe the vertices of a triangle with one screw placed inferiorly (toward the knee), one placed anteriorly (toward the front) and one placed posteriorly (toward the back).
[0031] The first step of the procedure, shown in FIG. 2, is the insertion of three guide pins (110) under fluoroscopic guidance. Numerous x-ray images involving frequent reorientation of the fluoroscope are required to monitor the progress of the guide pin insertion in both AP (front-to-back) and lateral (side) views. A drill guide (105) with three or more holes (1...
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A computer assisted surgery system with is enhanced graphics features is described for assisting a surgeon in orthopaedic procedures. A system is described for use in inserting multiple guide pins in hip fracture surgery using a single bore drill guide that has a graphical representation comprising its real trajectory and one or more virtual trajectories, the virtual trajectories representing potential positions of other guide pins to be placed during the procedure. Additionally, representations of inserted guide pins and virtual trajectories may be retained on the display at their inserted positions for use in aligning subsequent guide pins. A system is also described for orientation of an acetabular cup in a total hip replacement surgery. During cup insertion, the surgeon is provided with information regarding the orientation of the cup with respect to a pelvic reference frame that is based on accepted pelvic landmarks. The positions of each landmark is calculated by the system when a probe with a virtual tip, separate from its physical tip, is overlaid on the landmark in roughly orthogonal images of the pelvis.
Description
RELATED APPLICATIONS [0001] This application is a continuation of U.S. application Ser. No. 09 / 683,104, filed Nov. 19, 2001, entitled “Enhanced Graphic Features For Computer Assisted Surgery,” which is hereby expressly incorporated herein in its entirety including the specification, claims, drawings and abstract.BACKGROUND OF THE INVENTION [0002] This invention relates to a computer assisted surgery system with enhanced graphics capabilities for use in inserting multiple screws into a hip fracture and orienting a total hip acetabular component. [0003] Fractures of the femoral neck, one kind of hip fracture, are a common injury of the elderly with over 150,000 such fractures occurring annually. The currently accepted treatment for mildly displaced femoral neck fractures is surgical fixation. In the procedure, three cannulated screws are inserted in the hip, from the lateral aspect of the femur, across the fracture site and into the femoral head. The initial step is the placement of t...
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Patent Timeline
02 Jun 2005
Publication
US20050119561A1
- IPC
- A61B17/17; A61B19/00; A61F2/34; A61F2/46
- CPC
- A61B17/1703; A61F2002/4681; A61B17/1742; A61B19/50; A61B19/52; A61B19/5244; A61B19/56; A61B2019/507
- Inventors
- KIENZLE, THOMAS C. III