Vacuum timing algorithm for biopsy device
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United States of America Patent
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May 10, 2011
Grant Date -
Sep 18, 2008
app pub date -
Nov 20, 2007
filing date -
Dec 13, 2006
priority date (Note) -
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Abstract
A biopsy system has a cutter defining a cutter lumen along an axis. One conduit in the system is configured to provide fluid communication along the cutter lumen axis; while another conduit in the system is configured to provide fluid communication lateral to the cutter lumen axis. The system may be operated in a variety of modes, including a sample cycle, a clear probe cycle, a cutter positioning cycle, an aspirate cycle, and a maintenance vacuum pulse cycle. The operational modes are selectable by a user. Depending on the mode selected by the user, the communication of vacuum, saline, or atmospheric air through the conduits, or the sealing of the conduits, will vary as a function of the axial position of the cutter.
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