Valve mechanism for tetherless biopsy device
US8177728B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2009 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | Feb 20, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2010/0225
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A biopsy device comprises a body, a needle, a cutter, and a shuttle valve slider. The needle has a first lumen and a second lumen. The cutter translates relative to the needle. The shuttle valve slider translates in response to translation of the cutter. The shuttle valve slider vents the second lumen when the shuttle valve slider is in a first longitudinal position and substantially seals the second lumen relative to atmospheric air when the shuttle valve slider is in a second longitudinal position. A degree of lost motion is provided between the cutter and the shuttle valve slider, such that the cutter moves the shuttle valve slider only when the cutter moves through a first part of the cutter's range of motion; and such that the cutter does not move the shuttle valve slider when the cutter moves through a second part of the cutter's range of motion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.