Excisional stereotactic apparatus
US5794626A · kind A · utility
Inventor
Key dates
| Filing date | Aug 14, 1996 |
| Grant date | Aug 18, 1998 |
| Priority date | — |
| Expiry date | Aug 14, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/320725
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An excisional biopsy needle assembly for use in combination with a stereotactic platform for excising tissue from the interior of the body. The biopsy needle includes a rotatable flexible blade that is capable of transforming between a contracted configuration for piercing into the interior of the body and an expanded configuration in which the flexible blade is expanded relative to the shaft of the needle for excising tissue. The needle assembly may be mounted in a stereotactic needle for a breast biopsy procedure that digitally directs the needle tip into a lesion with the flexible blades in a contracted configuration, then expands the flexible blades to the expanded configuration and rotates the blades thus excising tissue in a region having a cross sectional dimension that is large in relation to the cross section of the needle shaft. The excised tissue is extracted from the needle tip through an aspiration channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.