Harvesting tools for biological units
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United States of America Patent
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Jul 3, 2012
Grant Date -
Sep 25, 2008
app pub date -
Mar 18, 2008
filing date -
Mar 19, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Tools and methods are provided for removing biological units from a body surface utilizing a removal tool. The tools may incorporate retention members and mechanisms configured to impede movement of the biological unit in the direction of a distal end of the tool and to improve retention of the biological unit in the tool. Some of the retention members are stationary and some are movable within the lumen of the biological unit removal tools. The distal tips of the tools are desirably configured to reduce the chance of transection of a biological unit, such as by including both cutting segments and blunt relief segments. A number of dual concentric tube embodiments permit a division of removal functions. Distal fluid or gas delivery may supplement a vacuum in a luminal space to help extract biological units from surrounding tissue.
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