Micro-invasive device
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United States of America Patent
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-
Sep 22, 2009
Grant Date -
Mar 13, 2008
app pub date -
Jul 30, 2007
filing date -
Mar 23, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An apparatus for removing tissue and/or other material from a patient, particularly a breast of a patient, is provided. The apparatus generally includes a handpiece and a tissue removal mechanism connected thereto. The tissue removal mechanism includes a cannula having an open distal tip and an outer diameter of less than about 5 mm, or less than about 2 mm. The mechanism further includes a rotatable element having a distal portion with helical threading. The distal portion of the rotatable element extends beyond the open distal tip of the cannula in order to allow tissue to prolapse between turns of the helical threading. The apparatus is designed to draw soft tissue into the cannula upon rotation of the rotatable element and without the need for supplemental sources of aspiration.
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