Pulsed vacuum and/or flow method and apparatus for tissue removal
US6887209B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2002 |
| Grant date | May 3, 2005 |
| Priority date | — |
| Expiry date | May 2, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F9/00763
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method of controlling a surgical cutting device, the device including a hollow needle with a port for tissue entry and a moveable cutting blade for severing tissue entering the needle through the port, the blade being movable between a first portion enabling tissue entry through the port and a second portion closing the port, the tissue entering the needle being severed as the blade moves between the first and second portions, the method includes the steps: a) providing vacuum to the hollow needle to cause tissue entry into the needle through the port; b) moving the blade from the first portion to the second position to sever the tissue entering the needle; c) evacuating severed tissue from the needle by vacuum; d) reducing vacuum to the needle before moving the blade from the second position to the first position; and repeating steps (a) through (d).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.