Alignment button for stereotaxic plug and method of using the same
US4826487A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 4, 1987 |
| Grant date | May 2, 1989 |
| Priority date | — |
| Expiry date | May 4, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/3411
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An alignment button includes cannula and radiopaque markers exactly mimicing corresponding elements in a stereotaxic array plug. The stereotaxic array plug is installed in an opening in the skull and the scalp is closed over it. The alignment button is sutured in place with its cannula exactly aligned with corresponding cannula in the stereotaxic array plug. Alignment is performed using medical imaging capable of showing simultaneously the radiopaque marker in both elements. In one embodiment of the invention, jaws protrude inward into the cannula to stabilize a medical device inserted therethrough. In a further embodiment of the invention, the alignment button is affixed over soft tissue without being accompanied by a stereotaxic array plug.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.