Computer assisted intramedullary rod surgery system with enhanced features

Abstract

A computer assisted surgery system for positioning a surgical implant within a patient's body that includes a localizing device configured to measure a pose of the surgical implant, an imaging device adapted for acquiring images of the surgical implant, and a computer adapted for calculating an adjusted pose for the surgical implant based on information developed from the images so as to compensate for deformation of the surgical implant or inaccuracies in localization.

1 . A computer assisted surgery system for positioning a surgical implant within a patient's body, said system comprising: 
 a localizing device configured to measure a pose of the surgical implant;    an imaging device adapted for acquiring images of the surgical implant; and    a computer adapted for calculating an adjusted pose for the surgical implant based on information developed from the images so as to compensate for deformation of the surgical implant or inaccuracies in localization.    
   
   
       2 . The system of  claim 1 , further comprising a display adapted for displaying a graphic representation of the surgical implant based on the adjusted pose of the surgical implant.  
   
   
       3 . The system of  claim 1 , further comprising a surgical instrument defining a trajectory and a display device, and wherein the localizing device is further operative for measuring the pose of the surgical instrument and the display device is adapted to display a graphic representation of the trajectory relative to a graphic representation of the surgical implant, based on the measured pose of the surgical instrument and the adjusted pose of the implant.  
   
   
       4 . The system of  claim 1 , wherein the imaging device is an X-ray imaging device.  
   
   
       5 . The system of  claim 1 , wherein the information developed from the images is an adjustment to be applied to the pose of the surgical implant, said adjustment developed through image processing techniques applied to the images of the implant.  
   
   
       6 . The system of  claim 1 , wherein the localizing device is an optical localizing device.  
   
   
       7 . A method for positioning a surgical implant within a patient's body, wherein the surgical implant has one or more holes, the method comprising: 
 calculating an adjusted pose for the surgical implant based on information developed from acquired images of the surgical implant so as to compensate for deformation of the surgical implant or inaccuracies in localization.    
   
   
       8 . The method of  claim 7 , further comprising displaying a graphic representation of the surgical implant based on the adjusted pose of the surgical implant.  
   
   
       9 . The method of  claim 7 , further comprising: 
 measuring a pose of a surgical instrument; and    displaying a graphic representation of a trajectory of the surgical instrument relative to a graphic representation of the surgical implant, based on the measured pose of the surgical instrument and the adjusted pose of the implant.    
   
   
       10 . A computer program product for positioning a surgical implant within a patient's body, wherein the surgical implant has one or more holes, said computer program product comprising: 
 instructions for calculating an adjusted pose for the surgical implant based on information developed from acquired images of the surgical implant so as to compensate for deformation of the surgical implant or inaccuracies in localization.    
   
   
       11 . The computer program product of  claim 10 , further comprising instructions for displaying a graphic representation of the surgical implant based on the adjusted pose of the surgical implant.  
   
   
       12 . The computer program product of  claim 10 , further comprising instructions for measuring a pose of a surgical instrument; and instructions for displaying a graphic representation of a trajectory of the surgical instrument relative to a graphic representation of the surgical implant, based on the measured pose of the surgical instrument and the adjusted pose of the implant.