Method and apparatus for positioning a tissue recovery instrument in confronting adjacency with a target tissue volume
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United States of America Patent
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app pub date -
Sep 5, 2002
filing date -
Dec 27, 1999
priority date (Note) -
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Abstract
A target tissue volume is accessed with a cannular instrument, the tip surface of which supports a precursor electrode assemblage which is electrosurgically excitable. The instrument tip initially is inserted through an incision made in the skin of a patient utilizing a pair of retractor components, the tips of which are located at a proper depth for positioning the precursor electrodes of the recovery instrument. The retractor components also are configured to define a guidance channel for receiving the tip of the recovery instrument. By stabilizing the instrument when the precursor electrodes are adjacent the tips of the retractor components and then slidably removing the retractor apparatus along the surface of the instrument, the tissue is “set” to assure proper precursor electrode positioning. The precursor electrodes are configured to exhibit an equivalent diameter having a value of at least about 90% of the diameter of the recovery instrument and are spaced forwardly of the tip surface of the instrument a distance for enhancing instrument maneuvering.
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