Precise hip component positioning for hip replacement surgery
US9308002B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 5, 2012 |
| Grant date | Apr 12, 2016 |
| Priority date | — |
| Expiry date | Feb 12, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/4687
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device for accurately positioning the acetabular cup in a minimally invasive total hip arthroplasty (THA), comprising the steps of (a) placing the cup in roughly the correct position in the acetabulum using a acetabular component placement tool, (b) taking a first abduction reading and a first anteversion reading using a gyroscopic positioning unit aligned with the acetabular component placement tool, (c) taking an image of at least a portion of the cup using a radiography unit, (d) using the image to determine the actual orientation of the cup and required position of the cup to properly orient the acetabular component, (e) incrementally altering the position of the cup by using a striking tool, (f) taking new abduction and anteversion readings using the gyroscopic unit to determine the relative movement of the cup caused by the tapping, and (g) repeating any of the steps as necessary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.