CRYOSURGICAL INSTRUMENT FOR OBTAINING A TISSUE SAMPLE, METHOD FOR CHILLING A PROBE HEAD OF A CRYOSURGICAL PROBE
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United States of America Patent
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Issued Date -
Mar 24, 2011
app pub date -
Apr 23, 2009
filing date -
May 23, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A cryosurgical instrument for obtaining a tissue sample with a probe, including the probe including a probe head onto which the tissue sample is frozen and a probe shank for guiding the probe head to the tissue sample, a supply means for supplying a fluid into an expansion chamber configured such that supplied fluid expands therein for cooling the probe head, and a removal means connected to the expansion chamber for removing the expanded fluid therefrom via at least one opening on a distal end of the probe to remove the expanded fluid to an outer region outside the probe. A method for cooling a probe head of a cryosurgical probe including supplying a fluid to an expansion chamber near the probe head, expanding the fluid so that heat energy is withdrawn from the probe head, and removing the expanded fluid in a distal region of the probe.
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