Quick cycle biopsy system
US8012102B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2007 |
| Grant date | Sep 6, 2011 |
| Priority date | — |
| Expiry date | Sep 7, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2010/0225
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for extracting a tissue sample includes altering the pressure inside the lumen of a cannula to facilitate extraction of a tissue sample from the cannula. One aspect of the invention includes a biopsy apparatus comprising a valve for controlling the pressure inside the lumen of the cannula. In one variation, the pressure/vacuum generating device is connected to a cannula with a closed distal end and an orifice located on a circumferential surface of said cannula. A cutting sheath is slidably disposed over said cannula. The valve may be provided between the pressure/vacuum generating device and the cannula to control the pressure within the lumen of the cannula.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.