Undercutting surgical instrument
US5817095A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 22, 1996 |
| Grant date | Oct 6, 1998 |
| Priority date | — |
| Expiry date | Feb 22, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/85884
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An undercutting surgical instrument comprises a housing disposed along a longitudinal axis between a proximal region and a distal section which is sized to be inserted into a hole in a bone. A passage with an open end at the distal section is disposed through the housing along an axis to receive a guide wire for positioning the distal section adjacent to the bone. A plurality of axially extending slots in walls of the housing are arranged around the passage and extend between the proximal region and the distal section of the housing, and receive a plurality of axially extending arms. A proximal region of each arm is pivotally mounted to the housing, and a distal end of each arm carries a cutting tool so that the cutting tools are arranged around the open end of the passage (and the guide wire). An actuator is movably disposed within the passage and coupled to selectively pivot the arms transversely to the axis so that the cutting tools are moved between a retracted position (in the slots) and a deployed position (in which the cutting tools protrude from the slots). The actuator is also rotatably coupled to the housing to rotate the distal section and the deployed cutting tools to f…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.