Prosthetic acetabular cup inserter
US5474560A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1994 |
| Grant date | Dec 12, 1995 |
| Priority date | — |
| Expiry date | Sep 26, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/4681
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The insertion instrument of this invention includes a generally cylindrical handle portion and a cup engaging portion held in a spaced relationship by an arcuate intermediate portion. Handle portion includes a longitudinal throughbore and an impaction head. The cup engaging portion includes a rotatable threaded stud for threaded accommodation within a threaded hole of an prosthetic acetabular cup. The stud includes a head having a recess formed therein for accommodating a driving device. The longitudinal bore of the handle portion and the head of the threaded stud are placed in alignment such that the shaft of a screwdriver extending through the threaded bore is aligned with the head of the screw. Therefore, a surgeon using the instrument of this invention does not need to have a clear view of the threaded stud to attach a screw driver. This is especially useful after the surgeon has impacted the acetabular cup within a prepared acetabulum and needs to remove the insertion instrument. Often, the head of the screw may be obscured from the surgeon by the depth of the wound. This instrument provides for the easy alignment of the driver and the head of the threaded stud.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.