Biopsy needle with integrated guide pin
US8167819B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2010 |
| Grant date | May 1, 2012 |
| Priority date | — |
| Expiry date | Feb 2, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/034
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A biopsy needle assembly for use in a biopsy gun includes coaxially slidably engaged outer needle and inner needles. The inner needle defines a cavity adjacent its distal end for receiving a tissue sample. A first hub is attached to the proximal end of the inner needle, and a second hub is attached to the proximal end of the outer needle. An elongated pin having a first end and a second end is fixedly attached to the first hub at the first end of the pin. The second end is in sliding contact with the second hub so that the second hub and the pin are slidable relative to each other. A stop engagement is provided between the second end of the pin and the second hub and is configured to prevent disengagement of the outer and inner needles and to maintain a specific physical relationship between the hubs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.